example office tower

Date: 24/04/2007

Pre design specification

Office Tower

Pre Design Specification

Project definition...........................................................................................................................................3

General definition .....................................................................................................................................3 Definition of supplied circuit ................................ ................................ ................................ .......................4

General installation design ............................................................................................................................6 Power supply ...........................................................................................................................................6 Main distribution general diagram : 1 Subst- N TransfoNO- N Rising............................................................6 Circuit distribution .....................................................................................................................................8

Technical specification for material and installation conditions ....................................................................... 10 MV equipment ........................................................................................................................................ 10 Main switchboards and main LV distribution equipment ................................ ................................ ............. 13 LV switchboard and distribution equipment............................................................................................... 15

Technical appendix N°1: circuit distribution principle ................................ ................................ ..................... 22 Centralized Layout.................................................................................................................................. 22 Distributed Layout .................................................................................................................................. 22

Technical appendix N°2: circuit configuration................................................................................................ 23 Radial Configuration ............................................................................................................................... 23

Technical appendix N°3: Backup generator.................................................................................................. 24 LV Back-up Generator ............................................................................................................................ 24

Technical appendix N°4: Uninterruptible Power Supply ................................................................................. 26 UPS....................................................................................................................................................... 26 Technical specification for UPS : ................................ ................................ ................................ ............. 27

Detailed Technical specification for MV switchboard................................ ................................ ..................... 28 Detailed Technical specification for MV/LV transformer................................................................................. 37 Detailed Technical specification for LV switchboard ...................................................................................... 44 Detailed Technical specification for Busbar trunking system .......................................................................... 54


Project definition

General definition

Activity This project is in the domain of High-end office Definition: Building mainly dedicated to for office usage which can integrate some other synergetic activities, such as: fitness centre, cafe/restaurant, shops. Description: Buildings are generally located in high tech tertiary activity park with:

• more than 5 floors • surface from 4000 to 20000 m² - surfaces are normally arranged in partitioned areas • According to the need the installed power may vary from 400kVA minimum to 1500kVA.

The needs are: - Maximize letting space - Secure construction cost and delay - Secure building capability to be let:

• Provide good flexibility and energy efficiency lev el • Make fit-out quickest, cheapest and simplest for tenants • Bring best solution for divisibility issue • Proof customers that embedded technology and products are good quality, durable and available

The solutions for electrical distribution are due to the f lexibility need mainly distributed downstream the Main Low Voltage Switchboard:

• Rising Busbar trunking System, to supply each floor • One or two distributed LV switchboards per floor, for power socket, lighting and HVAC • Busbar trunking systems, downstream the LV switchboards, to meet flexibility for power sockets and lighting circuits • UPS to insure continuity of service for the IT system

Site Topology

This project is intended for a Single Several Floors Building The building floor number is more than 10

Power Demand The Power Demand of the project is more than 2500 kVA See also Glossary for explanation of circuit characteristics.


Definition of supplied circuit − Circuit: Office lighting

− Installation flexibility: Till installation − Load Distribution: Uniform − Power interruption sensitivity: Short Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: Office workstation − Installation flexibility: Till operation − Load Distribution: Uniform − Power interruption sensitivity: No Interruption Acceptable − Disturbance sensitivity: Medium − Environment, atmosphere: Standard − Maintainability: Standard

− Circuit: Floor common lighting − Installation flexibility: No − Load Distribution: Uniform − Power interruption sensitivity: Short Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: Floor common power − Installation flexibility: No − Load Distribution: Uniform − Power interruption sensitivity: Long Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: Rising lighting − Installation flexibility: No − Load Distribution: Intermediate − Power interruption sensitivity: Short Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: Lift − Installation flexibility: No − Load Distribution: Localised − Power interruption sensitivity: No Interruption Acceptable − Disturbance sensitivity: Medium − Environment, atmosphere: Standard − Maintainability: Standard

− Circuit: HVAC production − Installation flexibility: No − Load Distribution: Localised


− Power interruption sensitivity: Long Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: HVAC floor distribution − Installation flexibility: Till installation − Load Distribution: Intermediate − Power interruption sensitivity: Long Interruption Acceptable − Disturbance sensitivity: Low − Environment, atmosphere: Standard − Maintainability: Minimum

− Circuit: IT server − Installation flexibility: No − Load Distribution: Localised − Power interruption sensitivity: No Interruption Acceptable − Disturbance sensitivity: High − Environment, atmosphere: Standard − Maintainability: Standard


General installation design

Power supply

Upstream network The project electrical installation is connected to Utility

Connection scheme The upstream connection scheme is Single Line

Service reliability The upstream network allows us to expect a Standard service reliability.

Main distribution general diagram : 1 Subst - N TransfoNO- N Rising

1 Substation - N Transformers - Normally Open Connection – N rising BTS


Usual characteristics

Synthesis

10 000

2 500

5

0

5 000

10 000

15 000

Inst. power field (kVA) Project floor N°0

5

10

Reliability Technicity

High

Medium

Basic

Installed power The installed power is usually greater than 1250 kVA. But this solution can be used for smaller installed power in case of: − redundancy requirements, − accessibility constraints to the substation (it’s sometime worthwhile having 2 small transformers instead of a big one). In practice, this solution will be limited to 5 transformers (3 for typical applications), so the installed power can reach about 10 MVA, and typically will be from 4 to 10 MVA.

Project size For implementation reason, from 2500 kVA, this solution is limited to a few floors (10 maxi).

Interruption sensitivity This solution contains more than one transformer. Consequently, it is possible to use back-up operation modes preventing installation shut down in case of transformer failure. In nominal operation mode, each transformer feeds its own main LV switchboard. In back-up operation mode, in order to limit the short-circuit withstand of downstream equipment: − transformers will never be connected with each other, − each transformer should be sized in order to be able to feed its own downstream installation, and part (with load shedding) or all the

downstream installation its neighbor. As this solution contains at least one rising main per main LV switchboard, in case of rising main failure only one part of the building is affected.

Disturbance sensitivity As in this solution, the transformers of the substation are never connected together, they can feed loads with medium sensitivity to disturbance: − in case of transformer over sizing (compared to installed power), − or in case of special transformer utilization (low ucc), − by separating properly sensitive loads and non linear ones on different transformers. If addition of this last point, UPS or active f iltering could be implemented to feed high sensitive loads.

Flexibility Installation flexibility can be managed by taking into account extra power to size the transformers and by including spare capacity in the main LV switchboards with appropriate service rating. Rising distribution has low flexibility due to centralized connection of floor distribution panels to main LV switchboard.

Implementation recommendations The main objectives for MV/LV substation localization is to:

− limit the impact on the building architecture (size and place of the technical room), − manage accessibility constraints for equipment implementation.

That’s the reason why, main LV switchboard is generally placed: − in the ground floor, − in an underground floor.

The utility connection can be either single line or ring main or parallel. Concerning substation: − MV metering is required for the substation because of more than 1 transformer,


− it can be realized with prefabricated substation which allows, installation time reduction and reliability improvement (but limited to 2 transformers).

As far as possible the transformer power is lower or equal to 1250 kVA. They are all localized in the same substation. As they are never connected together, they are not necessarily similar. Despite the utilization of many transformers, all LV equipment require no short circuit withstand over sizing, because transformers are never connected together. The main LV switchboard feeds directly the main loads of the installation (generally up to 100 kW), in particular when they are close from its. Floor distribution circuits are connected by N busbars trunking system rising in order to limit the size and height of the rising BTS and/or in order to manage redundancy for floor distribution. Common circuits, like lifts, stairs lighting, etc. are generally fed by separate circuits. The changeover between normal and back-up operation mode can be implemented with prefabricated changeover systems. When limited to 2 transformers, the 2 main LV switchboards can be implemented in the same enclosure.

Typical applications Office tower building. Shopping centers, malls. Collectif housing building. /Hospital. Circuit distribution − Circuit: Office lighting

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS

− Circuit: Office workstation − Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: UPS

− Circuit: Floor common lighting − Distribution principle: Distributed − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS

− Circuit: Floor common power − Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS

− Circuit: Rising lighting − Distribution principle: Centralized − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS

− Circuit: Lift − Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: UPS

− Circuit: HVAC production − Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS


− Circuit: HVAC floor distribution − Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS

− Circuit: IT server − Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: UPS


Technical specification for material and installation conditions

MV equipment

MV switchboard equipment technical specification MV equipment switchboard could be of type:

SM6 The SM6 is a range of harmonised cubicles equipped with SF6 or vacuum air breaking technology switchgear. These cubicles allow you to produce all your Medium Voltage substation requirements up to 24kV by superposing their various functions. The SM6 is made-up of modular units containing fixed or withdrawable metal-enclosed switchgear, using sulphur hexafluoride (SF6) or vacuum : − switch-disconnector − SF1, SFset or Evolis circuit beaker − Rollarc 400 or 400D contactor − Disconnector For this project, MV substation configuration is as follows :

Single line services


MV metering Several outgoing to MV/LV transformers (QM if rated power<2000kVA, DM1-A else) with radial connection

Characteristics : Rated voltage : 7.2kV – 12kV – 17.5kV – 24kV Internal arc withstand : standard 12.5kA-0.7s, enhanced 16kA – 1s Degree of protection : IP2XC for units, IP2X between compartments Rated voltage (kV) 7.2 12 17.5 24 Insulation level 50Hz, 1mm Insulation 20 28 38 50 (kV rms) Isolation 23 32 45 60 1.2/50µs Insulation 60 75* 95 125 (kV peak) Isolation 70 85 110 145 Breaking capacity Transformer off load (A) 16 Cables off load (A) 31.5 Short-time withstand Current (kA.1s)

25 630 – 1250A 20 630 – 1250 A

16 630 – 1250 A 12.5 430 – 630 – 1250 A

The making capacity is equal to 2.5 times the short-time withstand current *60 kV peak for the CRM unit

General Characteristics Maximum breaking capacity Rated voltage (kV) 7.2 12 17.5 24 Units IM, IMC, IMB NSM-cables, NSM-busbars

630A – 800A*

PM, QM, QMC, QMB 25kA 20kA CRM 10kA 8 kA CRM with fuses 25kA

SF6 circuit breaker range : DM1-A, DM1-D, DM1-W, DM1-Z, DM1-S, DM2

25kA 20kA

Vacuum circuit breaker range : DMV-A, DMV -D, DMV-S 25kA 20kA

* in 800 A consult us


MV/LV transformer technical specification MV/LV transformer could be of type: Trihal

Trihal is a three phase dry type transformer, cast under vacuum in epoxy resin with an active filler for indoor installation. Thanks to the absence of any dielectric liquid and the excellent fire behaviour, it provides an easy and fast installation. The Trihal cast resin transformer can be protected from any damaging temperature rises by monitoring winding temperature. Characteristics : Rated power : 160 kVA to 2500 kVA Insulation level : 7.2 to 36 kV Maximum ambient temperature : 40°C Rated frequency : 50Hz Degree of protection : IP00 or IP31 with protection cabinet Losses : Normal or reduced Connection components for Canalis Busbar trunking


Main switchboards and main LV distribution equipment

Main LV switchboard equipment technical specification The main LV switchboard could be of type:

Prisma Plus P

The Prisma Plus System P can be used for all types of low -voltage distribution switchboards (main, subdistribution and final) up to 3200A in commercial and industrial environnments.The switchboard is made up of frameworks that can be combined widthwise or dephtwise, a distribution system with horizontal and vertical busbars and a complete functional units designed for the devices. Characteristics Rated current In up to 3200 A Withstand current Icw 85 kA Degree of protection IP 30-IP31-IP55 Degree of protection against mechanical impact IK07-IK08-IK10 Service ratings from 211 to 332

Icw

IP

IK

Nbr mod .

Height

Width

Depth

Associability

Cubicles 85KA rms/1s

30/31/55 07 08 10

36 2 000 mm 300 mm 400 mm 650 mm 800 mm

400 mm 600 mm

Width and depth


Main LV distribution equipment technical specification The main LV distribution could be of type: KSA

Application: rising main power distribution Canalis KSA rising main is used for power distribution in multi-floor buildings. By providing several tap-off units per floor , it allows a large flexibility and simple and fast extensions. This kind of busbar is particularly adapted to save room in the technical shaft. Characteristics: Rated current In from 100 A to 1000 A Rated insulation voltage 690V Degree of protection IP55 Three phase distribution 3L+N+PE Tap-off units every 0,5 m Tap-off connectors and enclosures from 25 A to 400 A Fire barriers elements 2 hours Run components characteristics Rating of trunking (A) KS 100 160 250 400 500 630 800 1000 General characteristics Compliance with standards IEC/EN 60439-2

Degree of protection IP 55 55 55 55 55 55 55 55 Mechanical impacts IK 08 08 08 08 08 08 08 08

Rated current at an ambiaent temperature of 35°C

Inc A 100 160 250 400 500 630 800 1000

Rated insulation voltage Ui V 690 690 690 690 690 690 690 690 Rated operational voltage Ue V 690 690 690 690 690 690 690 690 Rated impulse voltage Uimp kV 8 8 8 8 8 8 8 8 Rated frequency F Hz 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60

Tap-off unit characteristics Rating of trunking (A) 100 160 250 400 500 630 800 1000 General characteristics Degree of protection IP 55 55 55 55 55 55 55 55 Mechanical impacts IK 08 08 08 08 08 08 08 08 Rated insulation voltage Ui V 400, 500 or 690 depending on protective device Rated operational voltage Ue V 400, 500 or 690 depending on protective device

Rated impulse voltage Uimp kV 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 Rated frequency f Hz 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60 50 /60


LV switchboard and distribution equipment

Circuits connected to switchboard

− Circuit: Rising lighting

− Distribution principle: Centralized − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS − Withdrawability : FFF − Form : 1 − IS : 111 − IP : IP > 20 − IK : IK = 07 − Equipment : Prisma Plus G

− Circuit: Lift

− Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: UPS − Withdrawability : FFF − Form : 1 − IS : 211 − IP : IP > 20 − IK : IK = 07 − Equipment : Prisma Plus P

− Circuit: HVAC production

− Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS − Withdrawability : FFF − Form : 1 − IS : 111 − IP : IP > 20 − IK : IK = 07 − Equipment : Prisma Plus P

− Circuit: IT server

− Distribution principle: Centralized − Circuit configuration: Radial − Genset: No Generator − UPS: UPS − Withdrawability : FFF − Form : 1 − IS : 211 − IP : IP > 20 − IK : IK = 07 − Equipment : Prisma Plus P


Prisma Plus G

Prisma Plus System G includes a wide range of solutions, from the most simple to the most sophisticated, for switchboards in small to mid-sized commercial, industrial and residential applications up to 630A. Main characteristics : Pack wall-mount enclosures Wall-mounted and Floor standing enclosures IP55 enclosures Rated current In 160 A Rated current In up to 630 A Rated current In up to 630 A Withstand current Icw : 10 kA Withstand current Icw 25 kA Withstand current Icw 25 kA Degree of protection IP30 Degree of protection IP 30-IP31-IP43 Degree of protection IP55 Degree of protection against Degree of protection against Degree of protection against mechanical impact IK07-IK08 mechanical impact IK07 -IK08 mechanical impact IK10

A Icw Ipk IP IK Nbr Rows

Height Width Depth Associability

Pack Wall-mounted enclosures

160A 10 kA ms/1s

32kA 30 7/8 2 3 4 5 6

5 heights from 480 mm to 1080 mm

555 mm (48 mod of 9

mm or 24 modules of

18 mm)

157 mm (without

door) 196 mm

(with door)

Height with Enclosure extension

A Icw Ipk IP IK Nbr

Rows Height Width Depth Associability

Wall-mounted enclosures

630A 25 kA ms/1s

52.5kA 30/31/43 7/8 6 9

12 15 18 21 24 27

8 heights from 330 mm

to 1390 mm

595 mm (enclosure)

305 mm (cable duct)

205 mm (without

door)

250 mm (with door)

Width and height

Floor standing enclosures

630A 25kA ms / 1s

52.5kA 30/31/43 7/8 27 30 33


to 1830 mm (including

plinth)

595 mm (basic

enclosure)

305 mm (cable duct)

205 mm

250 mm (with floor)

Width and height (with

wm. enclosure above)

Wall mounted and Floor standing enclosures IP55

630A 28kA ms : 1s

52.5kA 55 10 7 11 15 19 23 27 33


to 17500 mm

600 mm (basic

enclosure)

325 mm or 595 mm

(extensions)

230 mm

290 mm (including

30mm handle)

Width Height

« square » « L » shaped


Prisma Plus P

The Prisma Plus System P can be used for all types of low -voltage distribution switchboards (main, subdistribution and final) up to 3200A in commercial and industrial environnments.The switchboard is made up of frameworks that can be combined widthwise or dephtwise, a distribution system with horizontal and vertical busbars and a complete functional units designed for the devices. Characteristics Rated current In up to 3200 A Withstand current Icw 85 kA Degree of protection IP 30-IP31-IP55 Degree of protection against mechanical impact IK07-IK08-IK10 Service ratings from 211 to 332

Icw

IP

IK

Nbr mod .

Height

Width

Depth

Associability

Cubicles 85KA rms/1s

30/31/55 07 08 10

36 2 000 mm 300 mm 400 mm 650 mm 800 mm

400 mm 600 mm

Width and depth


Circuit connected to busbar trunking system − Circuit: Office lighting

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS − IP : IP > 20 − IK : IK = 07 − Equipment : KDP

− Circuit: Office workstation

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: UPS − IP : IP > 20 − IK : IK = 07 − Equipment : KDP

− Circuit: Floor common lighting

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: LV Generator − UPS: No UPS − IP : IP > 20 − IK : IK = 07 − Equipment : KDP

− Circuit: Floor common power

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS − IP : IP > 20 − IK : IK = 07 − Equipment : KDP

− Circuit: HVAC floor distribution

− Distribution principle: Distributed − Circuit configuration: Radial − Genset: No Generator − UPS: No UPS − IP : IP > 20 − IK : IK = 07 − Equipment : KNA


KDP

Application: lighting and power sockets distribution KDP is a flexible prefabricated trunking that can satisfy the different typologies of even the most constraining buildings. KDP combines advantages of the cable and the prefabricated busbar trunking. It can naturally fits into place where light fittings can be supported by the building's structure.

Characteristics : Rated current In 20 A Rated insulation voltage 690V Degree of protection IP55 Single or three phase distribution 1L+N+PE, 3L+N+PE Tap-off intervals 1.5m - 3m Tap-off units 10 and 16A for power distribution and lighting control Maximum distance between fixing points 0.33 m

Run Component characteristics Rating of trunking (A) KDP 20 General characteristics Compliance with standards IEC/EN 60439-2 Degree of protection IP 55 Mechanical impact IK 07 Rated current at an ambient temperature of 35°C Inc A 20 Rated insulation voltage Ui V 690 Rated operational voltage Ue V 230 … 400 Rated impulse voltage Uimp kV 4 Rated frequency f Hz 50/60

TAP-off units characteristics Type of tap-off standards KBC 10 KBC 10

Lighting control

KBC 16CB KBC 16CF

General characteristics Compliance with standards IEC/EN 60 439-2 Degree of protection IP 55 55 55 55 Rated current at an ambienT temperature of 35°C Inc A 10 10 16 16 Rated insulation voltage Ui V 690 400 690 400 Rated operational voltage Ue kV 230 … 400 230 .. 400 230 ..400 230 ..400 Rated frequency f Hz 50/60 50/60 50/60 50/60


KDP connection characteristics General characteristics Compliance with standards IEC/EN 61535 and EN 60320; IEC 227-53 for H05WF

cable Degree of protection IP 40 40 40 40 Number of live conductors 2 2 2 2 Rated current at an ambient temperature of 35°C Inc A 16 16 16 16 Rated insulation voltage Ui V 250 250 250 250 Rated operational voltage Ue V 250 250 250 250 Rated frequency f Hz 50 50 50 50

KNA

Application: small power distribution Canalis KN is used to supply and protect small loads in all buildings types (electrical tools, deep freezers, refrigerating containers, etc …) Characteristics : Rated current In 40 A, 63 A , 100 A and 160 A Rated insulation voltage 500V Degree of protection IP55 Three phase distribution 3L+N+PE Tap-off intervals 0.5m - 1m - 3m Tap-off units 16 A to 63 A (plug-in) Maximum distance between fixing points 3 m Run Component characteristics Rating of trunking (A) KN 40 63 100 160 General characteristics Compliance with standards IEC/EN 60 439-2 Degree of protection IP 55 55 55 55 Mechanical impacts IK 08 08 08 08 Rated current at an ambient temperature of 35°C Inc A 40 63 100 160 Rated insulation voltage Ui V 500 500 500 500 Rated operational voltage Ue V 500 500 500 500 Rated impulse voltage Ump kV 6 6 6 6

Rated frequency f Hz 50 /60 50 /60 50 /60 50 /60


Tap-off unit characteristics Rating of trunking (A) KN 40 63 100 160 General characteristics Degree of protection IP 55 55 55 55 Mechanical impacts IK 08 08 08 08

Rated insulation voltage Ui V 400, 500 or 600 depending on protective device Rated operational voltage Ue V 400, 500 or 600 depending on protective device

Rated impulse voltage Ump kV 4.6 4.6 4.6 4.6 Rated frequency f Hz 50 /60 50 /60 50 /60 50 /60


Technical appendix N°1: circuit distribution principle

Centralized Layout

Description It consists in connecting consumers to sources via a star connection. The cables are suitable for centralized layout, with point-to-point links between the Main Low Voltage Switchboard and current consumers or sub-distribution boards.

Recommendations Centralized Layout is recommended when:

− Installation flexibility is low, − Load distribution is localized: high unit power loads, non-uniform.

Power supply by cables gives greater independence of circuits, reducing the consequences of a fault from the point of view of power availability.

Load distribution

Flexibility Localized Intermediate Uniform

No

Design Centralized

Implementation Operation Distributed

Distributed Layout

Description It consists in connecting consumers to sources via a busway. Busbar Trunking System (BTS) are well suited to distributed distribution layout, to supply many loads that are spread out, making it easy to change, move or add connections..

Recommendations Distributed Layout is recommended when:

− Installation flexibility is high (moving of workstation), − Load distribution is uniform: loads evenly distributed of low and homogenous unit power.

The use of BTS allows load power circuits to be combined and saves on conductors by taking advantage of a clustering coefficient. The choice between cable and BTS, according to the clustering coefficient, allows us to find an economical optimum between investment costs, implementation costs and operating costs.

Load distribution

Flexibility Localized Intermediate Uniform

No

Design Centralized

Implementation

Operation Distributed


Technical appendix N°2: circuit configuration

Radial Configuration

Description This is the reference and the most simple configuration. A load is only connected to one single source. This configuration provides a minimum level of availability, since there is no redundancy in case of failure of the power source.

Recommendations This configuration is recommended depending on the load interruption sensitivity and the double -ended connection requirement

Sheddable configuration required

Interruption Sensitivity

No Yes

Sheddable Sheddable Radial

Long interruption

Short interruption

No interruption

Radial

Double

connection


Technical appendix N°3: Backup generator

LV Back-up Generator

Description The electrical power supply is produced by an alternator driven by a thermal engine. Its back-up time depends on the quantity of available fuel. A back-up generator functions generally disconnected from the network. A source change-over system is therefore necessary. According to the generator's capacity to supply power to all or only part of the installation, there's either total or partial redundancy.

Recommendations Main characteristics to be considered for implementing a LV generator are:

− load sensitivity to power interruption − availability of the upstream connection energy

Upstream connection energy

availability Interruption Sensitivity

Minimum Standard Enhanced

Sheddable No LV generator Long interruption LV

Short interruption generator LV generator

No interruption No LV generator The source-changeover can be automated to take into account the status of thenormal and back up sources before switching. The automatic source-changeover system requires no human intervention and switching form the normal to the replacement source takes place in less than 1 second. This changeover system is made up of: - 2 or 3 circuit breakers, - 1 mechanical and electrical interlocking system, - 1 controller. The controller can be of type BA or UA: BA controller, for a simple source-changeover system (automatic switching between the normal and replacement sources depending on theirstatus). UA controller, for a source-changeover system integrating the following automatic functions: - automatic switching between sources, - control and management of engine generating sets, - load shedding for non-priority circuits, - switching to the replacement source if one of the phases of the normal source is absent. A communication option based on the Schneider internal bus is available for the UA controller.

Range Compact Masterpact Type of device NS100 to 250 NS100 to 250 NS100 to 250 NT 06 to 16 NW08 to 63 Mechanical interlocking On mounting plate n n By rods n n n By cable n n n n Electrical interlocking By diagram n n n n n With IVE unit n n n Only with UA or BA Only with UA or BA Source changeover controller BA controller n n n n n UA controller n n n n n Remote communication via bus Device status indications n n n n n Device remote control n n n n n


Remote setting of 4-position switch n n n Indication and identification of protection status and alarms

n n n n

Transmission of measurement n n n n


Technical appendix N°4: Uninterruptible Power Supply

UPS

Description This system is used to avoid any power failure. The back-up time of the system is limited: from several minutes to several hours. The simultaneous presence of a back-up generator and a UPS allows a permanent supply of loads for which no interruption is acceptable. The back-up time of the UPS must be compatible with maximum time for the back-up generator to start-up and be brought on line. A UPS is also used to supply power to loads that are sensitive to disturbances.

Recommendations Main characteristics to be considered for implementing a UPS are:

− load sensitivity to power interruption − load sensitivity to disturbances

Disturbance sensitivity

Interruption Sensitivity

Low Medium High

Sheddable

Long interruption No UPS

Short interruption UPS No interruption


Technical specification for UPS :

Galaxy 6000 and Galaxy 5000 UPS are ideal for high power data centres and industrial applications. Technical Characteristics

Galaxy 6000 Galaxy 5000 Normal AC supply input Input voltage range 320V to 470V 3 phase 250V to 470V 3 phase Input Mains 1 and Mains 2 Separate or common Separate or common Frequency 50Hz / 60Hz +/- 10% 50Hz / 60Hz +/- 8% Input current total harmonic distorsion (THDI) < 4% with harmonic filter < 3% Input power factor > 0.95 with active harmonic filter > 0.99 Bypass system input Nominal input voltage 320V to 470V 3 phase + neutral 340V to 470V 3 phase + neutral Frequency 50Hz / 60Hz +/- 10% 50Hz / 60Hz +/- 8% Output Output voltages 380V, 400V, 415V +/- 3% 3 phase + neutral 380V, 400V, 415V +/- 3% 3 phase + neutral Voltage regulation +/- 1% +/- 1% Frequency 50Hz / 60Hz 50Hz / 60Hz Over load 165% 1 minutes, 125% 10 minutes 150% 1 minutes, 125% 10 minutes Output voltage total harmonic distorsion THDU < 3% THDU < 2% Max load crest factor 3:1 3:1 Variation of voltage with 100% load step +/- 5% NA Batteries Backup time 8-10-15-20-30-60 minutes, other on request 5 min to 8 h with standard internal charger Type sealed lead acid, open lead acid, Ni-Cd sealed lead acid, open lead acid, Ni-Cd Over all efficiency Double conversion mode up to 95% up to 94% Economy mode NA up to 97% Environmental conditions and noise Storage temperature -25°C to +45°C -25°C to +45°C Operating temperature up to 40°C for 8 hours, 35°C continuously up to 40°C Noise level (dBA) Less or equal to 72 Operating altitude 1000 m 1000 m Standards and approvals Performance and safety IEC/EN 62040-1, IEC/EN 60950 IEC/EN 62040-1, IEC/EN 60950 Performance and design IEC/EN 62040-3 IEC/EN 62040-3 Design and manufacturing ISO 14001, ISO 9001, IEC 60146 ISO 14001, ISO 9001, IEC 60146 EMC immunity IEC 61000-4 IEC 61000-4 – 2 to 6 EMC emission IEC 62040-2 C3 IEC 62040-2 C3 Approvals TUV – LCIE – CEM – CE Mark TUV – LCIE – CEM – CE Mark


Detailed Technical specification for MV switchboard SM6

General Specification for

High Voltage metal-enclosed cubicles

from 1 to 24 kV


1. General conditions The following specifications apply to modular indoor switchboards comprising factory built, metal-enclosed switchgear assembles. The equipment to be supplied shall consist of modular cubicles satisfying the following criteria: - open-ended design, - easy to install, - safe and easy to operate, - compact design, - low maintenance. The supplier must be able to prove its extensive possess experience in the field of MV switchgear, and has already supplied equipment of the same type & production process, in which has been in operation for at least three years.

2. Standards The switchgear shall comply with the latest issues of the following IEC recommendations: - IEC 62 271-200 Alternative current metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV, - IEC 60265 High voltage switches for rated voltages of 52 kV and above , - IEC 62271-102 High voltage alternative current disconnectors and earthing switches, - IEC 60694 Common specifications for high voltage switchgear and controlgear standard, - IEC 62271-105 High Voltage alternative current switch-fuse combinations, - IEC 62271-100 High Voltage alternative current circuit breakers, - IEC 60282-1 MV fuses, - IEC 60185 Current transformers, - IEC 60186 Voltage transformers, - IEC 60801 Electromagnetic compatibility for industrial process measurement and control equipment. - IEC60529 Degrees of protection provided by enclosures (IP code)

3. Rated voltage and short-time withstand current 3.1 The switchgear shall be suitable for three-phase systems operating at 24 kV, and 50 Hz. (Please, consult us for 60 Hz) 3.2 The rated voltage shall be at least 24 kV. 3.3 The short-time withstand current shall be 20 kA - 1 s / 24kV or 25 kA - 1 s / 12 kV. (Please, consult us for 2 s and 3 s) All switchgear shall be capable of withstanding the above conditions without provoking damage, in accordance with paragraphs 4.5, 4.6 and 4.7 of IEC 60694 and paragraph 4.5 of IEC 62 271-200 recommendations.

4. System parameters The insulation level of the switchgear shall comply with IEC recommendations and the values indicated in the following table.

4.1 Main electrical characteristics The hereunder values are for working temperatures from -5° C up to +40° C and for a setting up at an altitude below 1000 m. (Please, consult us for out of range temperatures’ and over 1000 m application)


---------------------------------------------------------------------------------------------------------------------------- rated voltage (kV) 7.2 12 17.5 24 ---------------------------------------------------------------------------------------------------------------------------- insulation level ---------------------------------------------------------------------------------------------------------------------------- 50 Hz / 1 mn insulation 20 28 38 50 KV isolation 23 32 45 60 ---------------------------------------------------------------------------------------------------------------------------- 1,2/50µs insulation 60 75 95 125 KV (peak) isolation 70 85 110 145 ---------------------------------------------------------------------------------------------------------------------------- breaking capacity transformer off load (A) 16 cables off load (A) 31.5 --------------------------------------------------------------------------------------------------------------------------- short –time withstand current (kA/1s) at 25 630 - 1250 A 20 630 - 1250 A (Please, consult us for 2s and 3s) 16 630 - 1250 A 12.5 400 - 630 - 1250 A ------------------------------------------------------------------------------------------------------------------------------- The making capacity is equal to 2.5 times the short-time withstand current.

4.2 General characteristics ---------------------------------------------------------------------------------------------------------------------------- Maximum breaking capacity ---------------------------------------------------------------------------------------------------------------------------- rated voltage (kV) 7.2 12 17.5 24 ---------------------------------------------------------------------------------------------------------------------------- switch unit (A) 630 - 800** fuse-switch unit (kA) 25 25 20 20 Contactor unit with fuses (kA) 25 25 Circuit breaker unit (kA) 25 25 20 20 (**) Please, consult us for 800 A application.


---------------------------------------------------------------------------------------------------------------------------- Endurance ---------------------------------------------------------------------------------------------------------------------------- units mechanical electrical endurance endurance ---------------------------------------------------------------------------------------------------------------------------- switch unit (*) IEC 60265 IEC 60265 1000 operations class M1 100 breaks at In,pf = 0.7classE3 contactor unit 400 IEC 60470 IEC 60470

300 000 operations 100 000 breaks at 320 A 300 000 breaks at 250 A contactor unit 400D 100 000 operations 100 000 breaks at 200 A circuit breaker unit IEC 62271-100 IEC 62271-100 10 000 operations 40 breaks at 12.5 kA 10 000 breaks at In,pf=0.7 ---------------------------------------------------------------------------------------------------------------------------- (*) as per recommendation IEC 62271-105, three breaking at pf = 0,2 1730 A / 12 kV 1400 A / 24 kV 2600 A / 5,5 kV

5. General requirements relative to the design and manufacture of the switchgear

5.1 Introduction The equipment shall satisfy the criteria for indoor, metal-enclosed switchgear class LSC2A & Class PI partitioning in accordance with paragraph 3.131.1; 3.109.2& 5.102 of 2003 -11 edition of IEC 62 271-200 recommendations. The cubicles shall be designed with three compartments housed in a single enclosure: - switchgear compartment, - busbar compartment, - connection compartment,

5.2 Switchboards The switchboards shall be made up of separate factory built cubicles housing the switchgear (switch-disconnector and switch enclosures shall be mounted horizontally in the cubicles and the circuit breaker shall be disconnectable and mounted vertically). The cubicles therefore form a compartmented distribution switchboard that can be extended if necessary. The cubicles shall meet the requirements of degree of protection index IP2XC (Please, consult us for IP3X). The galvanised and electro-galvanised sheet metal and metal fittings shall be painted to provide protection against corrosion. The epoxy-based paint shall have a thickness of at least 50 micronsmeter and shall be applied to both sides of all sheet metal. The colour shall correspond to the RAL colour range proposed. The switchboard shall be suitable for mounting above cable trenches, crawl spaces or base structures. Each cubicle shall carry a suitably dimensional identification label clearly indicating the functions and electrical characteristics of the cubicle in accordance with chapter 5.1 of IEC 62 271 -200. The switchgear and the switchboards shall be designed in such a way that the positions of the various switchgear devices shall be visible by the operator from the front of the switchboard. It shall also be possible to operate the switchgear from the front of the switchboard. The civil works specifications shall be unique for all cubicles making up the MV switchboard. The cubicle widths shall be multiples of 375 mm. In particular, the civil works for the circuit breaker cubicles shall be identical to the


civil works for the switch cubicles. The manufacturer shall provide an installation drawing to serve as a guide for the civil works. In accordance with applicable standards, the switchboards shall be designed to prevent access to all live parts when in operation as well as during maintenance work.

5.3 Earthing of metallic parts The earthing bars of each of the cubicles making up the switchboard shall be interconnected by a set of busbars, which shall be connectable outside the switchboard and extend over its full width. The cross-section of the busbars shall be determined so as to withstand the rated short-circuit current of the switchgear in accordance with IEC 62 271 -200 recommendations. The earthing bar shall be designed for connection to the main earthing bar of the substation without dismantling any of the bars.

5.4 Earthing of the power circuit Cable earthing shall be carried out by an earthing switch with a short -circuit making capacity, in accordance with IEC 62271-102 recommendations. It shall be possible to operate the earthing switch when the switch or disconnector is open. A padlocking system shall be provided to lock the earthing switch in either open or closed position. The position of the earthing switch shall be clearly visible from the front of the cubicle. Mechanical interlocking systems shall be provided to prevent incorrect operations such as the closing of the earthing switch with the switch or disconnector in closed position. The use of keyed or electric locks to actuate the above mentioned interlocking system shall not be accepted.

5.5 Switches The switches shall use low pressure SF6 gas for current interruption and shall require no maintenance. The switch enclosure shall be mounted horizontally within the cubicle and the position of the main and earthing contacts shall be clearly visible from the front of the cubicle. The position indicator shall be placed directly on the contact-operating shaft. The switch enclosures shall be made of cast epoxy resin. The switches shall be of the high operating frequency type in accordance with paragraph 3.104 of IEC 60265-1 recommendations. They shall have three positions (closed, open and earthed) and shall be fully assembled and tested before leaving the factory. The relative pressure of the SF6 gas inside the enclosure shall not exceed 0.4 bars (400 hPa). The pole unit enclosures shall be of the “sealed pressure system” type as defined by IEC 62 271-200 chapter 3.118.2 recommendations that is with a service life of at least 30 years. No refilling of the gas shall be required over this period. Switch pole units requiring maintenance or gas refilling will not be accepted. The mechanical end urance of the switch operating mechanisms shall ensure at least 1000 operations.

5.6 Circuit breakers 5.6.1 SF6 The circuit breakers shall be mounted vertically and shall be disconnectable. They shall use SF6 gas as the current interruption medium. They shall require only minimum maintenance and shall provide a high level of electrical endurance. The position of the circuit breaker shall be clearly visible.


Furthermore, the circuit breakers shall be mechanically interlocked with the power circuit disconnector. The pole units shall be made of cast epoxy resin and shall be fully assembled and tested before leaving the factory. The relative pressure of the SF6 gas shall not exceed 2 bars (2000hPa). The pole units shall be of the “sealed pressure system” type as defined by IEC 62271-100, with a service life of at least 30 years. No refilling of the gas shall be required over this period. Circuit breaker pole units requiring maintenance, inspection or gas refilling will not be accepted. The mechanical and electrical endurance shall ensure at least 10,000 operations. The circuit breakers shall be covered with test reports that are issued by a recognised organisation affiliated with an international organisation. 5.6.2 Vacuum The circuit breakers shall be mounted vertically and shall be disconnectable. They shall use vacuum as the current interruption medium. They shall require only minimum maintenance and shall provide a high level of electrical endurance. The position of the circuit breaker shall be clearly visible. Furthermore, the circuit breakers shall be mechanically interlocked with the power circuit disconnector. The pole units shall be fully assembled and tested before leaving the factory. The pole units shall be of the “sealed pressure system” type as defined by IEC 62271-100, with a service life of at least 30 years. Circuit breaker pole units requiring maintenance, inspection will not be accepted. The mechanical and electrical endurance shall ensure at least 10,000 operations. The circuit breakers shall be covered with test reports that are issued by a recognised organisation affiliated with an international organisation.

5.7 Busbars The busbar compartment shall be located at the top of the cubicle. It shall include three parallel-mounted bars without phase separating means. Connections shall be made to the top pads of the switch or disconnector enclosures. Access to the busbars shall only be possible after removing a single access panel carrying a symbol warning of the danger of electrical shock. No other busbar access system will be accepted.

5.8 Connections The HV cable connection pads shall be designed to accept simplified terminations for dry-type cables or to accept paper-insulated cables impregnated with a non-draining material. Access to the connection compartment shall only be possible after closing the earthing switch. No other access mode will be accepted.

5.9 Operating mechanisms The operating mechanisms shall provide in front all the necessary means for operating the switches, disconnectors and circuit breakers. 5.9.1 Load break switch The operating mechanism box shall include a switch and earthing switch position indicator fixed directly to the shaft of the moving pole, thereby satisfying the positive break criteria. This box shall also house the voltage indicators and the mechanical “fuse blown” indicator for fuse-switch combination units.


The box shall be accessible with the cables and busbars live, without isolating the entire switchboard, and shall be designed for easy installation of padlocks, key locks, auxiliary contacts, releases and the usual LV accessories. The front cover of the operating mechanism shall be suitable for the application of all symbols, mimic diagrams, nameplates and padlocking fixtures required by the function implemented. All switch and earthing switch operations shall be carried out with an anti-reflex lever and shall be independent of the action of the operator after charging the operating mechanism springs. 5.9.2 Circuit breaker The operating mechanism box shall include: mechanical “open/closed” position indicator, “charged/discharged” indicator for the operating mechanisms springs, spring charging lever forming an integral part of the operating mechanism; circuit breakers not satisfying this condition will not be accepted, local means for opening and closing the circuit breaker, local means for manually discharging the springs. It shall be possible to add, on site, a motor mechanism for electrical charging of the operating mechanism as well as the necessary accessories.

5.10 LV box The LV box shall be included in the overall volume of the cubicle. It shall be designed to house the various LV elements required for the operation of the motor mechanism and auxiliary equipment. For specific needs, its shall be possible to enlarge or extend the LV box by adding an enclosure with a door to the top of the cubicle. The overall height of the cubicles shall not exceed 2225 mm. In all cases, these volumes shall be accessible with the cables and busbars live, without isolating the entire switchboard. LV box not satisfying these criteria will not be accepted.

5.11 Current transformers The current transformers shall have the same short-time withstand current and rated voltage as the switchgear. It shall be made of cast epoxy resin and must be labelled individually. The manufacturer shall be in a position to provide type-test reports certified by an approved laboratory affiliated with international organisations. Current transformers not satisfying these criteria will not be accepted.

5.12 Low Power Current transformers (LPCT) The LPCT is a magnetic sensor in which provides a voltage output that represents the primary current, and shall meet the characteristic of switchgear. It shall be in accordance to IEC 60044-8, and shall be made of cast epoxy resin and must be labeled individually. It shall be easily installed, and shall direct connection (plugging) to protection relay. LPCT not satisfying these criteria will not be accepted.

5.13 Voltage transformers The voltage transformers shall be made of cast epoxy resin and must be labeled individually. Depending on the needs, they shall be of the phase-to-phase or phase-to-earth type. They shall be protected by MV fuses or by circuit breakers on the power circuit. The manufacturer shall be in a position to provide type-test reports certified by an approved laboratory affiliated with international organisations. Voltage transformers not satisfying these criteria will not be accepted.


5.14 LV auxiliaries Auxiliary equipment shall satisfy section 5.4 of IEC 60298 and section 5.4 of IEC 62 271-200 recommendations. The LV cables shall be class 2 type with a 2000 V insulation level. They shall be marked at each end for easy verification during maintenance or servicing work. The cable cross-sections shall not be less than 2.5 sqmm for circuits carrying high currents, or 1 sqmm for other circuits.

5.15 Control and monitoring All the relays, instruments and meters shall be incorporated in the LV box located at the top of the cubicle. The relays shall be of the “integrated unit” type, meeting all protection and automatic control needs. They shall comply with IEC 60801.4 and 50263 recommendations concerning electromagnetic compatibility. If necessary, they shall be able to communicate: - using standardised protocols, - adapting to a wide range of power supply voltages, - with the possibility of being disconnected while live without any danger to installation, - storing the information in memory in the event of an auxiliary power failure. The manufacturer shall provide proof that he has already supplied equipment of the same type and same make and that this equipment has been in operation for at least three years.

6. Type tests and routine tests Depending on switchboard, type-test certificates may be required for the equipment, including the switches and the circuit breakers. - impulse dielectric tests, - power frequency dielectric tests, - temperature-rise tests, - short-time withstand current tests, - mechanical operating tests, - verification of the degree of protection, - verification of electromagnetic compatibility. In addition, for the switches and circuit breakers, the rated making and breaking capacities shall be substantiated by a test report. For the earthing switch, the making capacity, the short-time withstand current and the corresponding peak value shall be substantiated by a test report. The routine tests carried out by the manufacturer shall be substantiated by a test report signed by the manufacturer's quality control department. The report shall cover the following aspects: - conformity with drawings and diagrams, - power frequency tests, - manual operating mechanism tests, - functional tests of LV auxiliaries and relays.


7. Quality If requested by the client, the supplier shall provide proof of application of a quality procedure complying with standards. This means: - use of a quality manual approved and signed by a management representative, - regular updating of this manual so that it reflects the most recent applicable quality control procedures, - ISO 9002; 9001 certification and also ISO 14001.


Detailed Technical specification for MV/LV transformer Trihal

General Specification for three-phase cast resin HV/LV distribution

transformers 100 to 2500 kVA

Trihal


1. Scope

Three-phase transformers of cast resin type, class F insulation system with natural (AN) cooling for indoor installation, destined for use in three-phase HV/LV distribution systems. If required forced cooling (AF) to increase the rated power up to 40%.

2. Standards

These transformers will be in compliance with the following standards : − IEC 60076-1 to 60076-5: power transformers − IEC 60076-11 : Dry type transformers − CENELEC Harmonisation Documents : − HD 464 S1 : 1988 + / A2 : 1991 + / A3 : 1992 for dry-type power transformers − HD 538-1 S1 : 1992 for three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with

highest voltage for equipment not exceeding 24 kV. − IEC 905 : 1987 - Load guide for dry-type power transformers. These transformers will be manufactured in accordance with : − a quality system in conformity with ISO 9001 − an environmental management system in conformity with ISO 14001, both certified by an official

independent organisation.

3. Description

3.1 Magnetic core This will be made from laminations of grain oriented silicon steel, insulated with mineral oxide and will be protected against corrosion with a coat of varnish. In order to reduced the power consumption due to transformer no-load losses, the magnetic core is stacked using overlapping-interlocking technology, with at least 6 overlaps. In order to reduce the noise produced by the magnetic core, it is equipped with noise-damping devices.

3.2 LV windings The LV winding is produced using al uminium or copper foils (according to the manufacturer’s preference) in order to cancel out axial stress during short circuit ; this foil will be insulated between each layer using a heat-reactivated class F pre-impregnated epoxy resin film The ends of the winding are protected and insulated using a class F insulating material, covered with heat reactivated epoxy resin The whole winding assembly will be polymerised throughout by being autoclaved for 2 hours at 130°C, which will ensure : High level of resistance to industrial environments Excellent dielectric withstand Very good resistance to radial stress in the instance of a bolted short circuit.

3.3 HV windings They will be separated from the LV windings to give an air gap between the MV and LV circuits in order to avoid depositing of dust on the spacers placed in the radical electrical field and to make maintenance easier. These will be independent of the LV windings and will be made of aluminium or copper wire or foil (according to the manufacturer's preference) with class F insulation. The HV windings will be vacuum cast in a class F fireproof epoxy resin casting system composed of : − an epoxy resin − an anhydride hardener with a flexibilising additive − a flame-retardant filler.


The flame-retardant filler will be thoroughly mixed with the resin and hardener. It will be composed of trihydrated alumina powder (or aluminium hydroxide) or other flame-retardant products to be specified, either mixed with silica or not. The casting system will be of class F. The interior and exterior of the windings will be reinforced with a combination of glass fibre to provide thermal shock withstand

3.4 MV winding support spacers These will provide sufficient support in transport, operation and during bolted short circuit conditions as well as in the case of an earthquake. These spacers will be circular in shape for easy cleaning. They will give an extended tracking line to give better dielectric withstand under humid or high dust conditions. These spacers will include an elastomer cushion that will allow it to absorb expansion according to load conditions. This elastomer cushion will be incorporated in the spacer to prevent it being deteriorated by air or UV.

3.5 HV connections The HV connections will be made from above on the top of the connection bars. Each bar will be drilled with a 13 mm hole ready for connection of cable lugs on terminal plates. The HV connection bars will be in rigid copper bars protected by heat shrinkable tubing. HV connections in cables are not allowed, in order to avoid all risk of contact, due to cables flapping. The HV connections will be in copper.

3.6 LV connections The LV connections will be made from above onto bars located at the top of the coils on the opposite side to the HV connections. Connection of the LV neutral will be directly made to the LV terminals between the LV phase bars. The LV connection bars will be in copper or in tinned aluminium (according to preference of the manufacturer). The output from each LV winding will comprise a tin-plated aluminium or copper connection terminal, enabling all connections to be made without using a contact interface (grease, by -metallic strip). These will be assembled according to current practices, notably using spring washers under the fixings and nuts. Devices in the 630 to 2500 kVA range will be easy to connect using factory-built electrical ducting through an optional interface. Stress withstand in the instance of a bolted short circuit on the connector will be guaranteed by the manufacturer.

3.7 HV tapping The tapping which act on the highest voltage adapting the transformer to the real supply voltage value, will be off-circuit bolted links. Tapping with connection cables are not allowed. These bolted links will be attached to the HV coils.

4. Accessories and standard equipment These transformers will be equipped with : − 4 flat bi-directional rollers − lifting lugs − haulage holes on the underbase − 2 earthling terminals − 1 rating plate − 1 "Danger Electricity" warning label (T 10 warning) − 1 routine tests certificate − 1 instruction manual for installation, commissioning and maintenance in English.


5. Thermal protection These transformers will be equipped with a thermal protection device which will comprise : 2 sets of 3 PTC sensors, one sensor for "Alarm 1", one for "Alarm 2" per phase, installed in the coils of the transformer. They will be placed in a tube to enable them to be replaced if ever necessary. An electronic converter with two independent monitoring circuits equipped with a changeover switch, one for "Alarm 1" the other for "Alarm 2". The position of the relays will be indicated by different coloured indicator lights. A third indicator light will indicate the presence of voltage. These three indicator lights will be on the front of the converter. The electronic converter will be installed away from the transformer. A plug-in terminal block for connection of the PTC sensors to the electronic converter. The PTC sensors will be supplied assembled and wired to the terminal block fixed on the upper part of the transformer. The converter will be supplied loose with the transformer, packaged complete with its wiring diagram.

6. Metal enclosure On request, these transformers will be equipped with a metal enclosure for indoor installation comprising an integral IP 31 (except the base which may be IP 21) metal enclosure, that can be dismantle on request, with : − an anti-corrosion protection in the manufacturer's standard colour − lifting lugs enabling the transformer and enclosure assembly to be handled. − a bolted access panel on the enclosure front to allow access to the HV connections and to the tapping. This

will be fitted with handles, it will have one "Danger Electricity" warning label (T 10 warning), a rating plate and a visible braid for earthling.

− blanked off holes for fitting Ronis ELP 1 or alternatively Profalux P1 type key locks on the bolted access panel to enable it to be locked.

− 2 undrilled gland plates on the roof : one on the HV side, one on the LV side (drilling and cable gland not supplied).

− 1 plate at the right HV side on the bottom of the enclosure for the HV cables for connections from the bottom − as an option, a HV cables clamping system shall be provided when the cables are coming from the bottom

7. Electrical protection

7.1 Protection relay The installation must have a protection relay to protect the transformer from: − overload, − short circuits (internal or external), − earth faults, − overflow.

7.2 MV surge arresters It is advisable to check that the installation will not be subjected to overvoltage of any kind (atmospheric or switching overvoltage). If there is a risk, the transformer should be protected by phase-earth surge arresters installed directly on the MV connection terminals (top or bottom). Phase-earth surge arresters are absolutely essential in the following cases: − If the lightning impact level Nk is greater than 25. The risk of direct or induced atmospheric overvoltage is

directly proportional to Nk. − During the occasional switching (less than 10 operations a year) of a transformer with a weak load, or during

a magnetisation period.


They are highly recommended in the following case: − If the substation is supplied by a network including overhead parts, then a cable which is longer than 20 m

(for example, an overhead-underground network).

7.3 RC filters (repetitive switching operations) If the installation is likely to be subjected to repetitive switching operations (e.g. connected with a process), it should be protected from the resulting surges, which are particularly harmful to the transformer. . The ideal solution for protecting the installation completely from these surges (with high frequency oscillations), consists in fitting an RC damping filter between the phases and the earth. This RC filter should be placed as close as possible to the transformer’s primary terminals. This gets rid of the high frequency phenomenon, and limits voltages at the transformer terminals. The filter should consist of 3 50 Ohm resistors (of the RWST type), and 3 0.25 µF capacitors, ins ulation level 24 kV. It may be placed either in a separate metal enclosure or, preferably, inside the metal enclosure of the transformer.

8. Electrical tests

8.1 Routine tests These tests will be carried out on all the transformers after the manufacturing, enabling an official test certificate to be produced for each one : − measurement of windings resistance − measurement of the transformation ratio and vector group − measurement of impedance voltage and load loss − measurement of no load loss and no load current − applied voltage dielectric test − induced voltage dielectric test − measurement of partial discharges. For measurement of the partial discharges, the acceptance criterion will be : − partial discharges less than or equal to 10 pC at 1.30 Un. (All these tests are defined in the Harmonisation Document HD 464 S1: 1988, the IEC 60076-11 and IEC 60076-1 to 60076-3 standards).

8.2 Type tests or special tests These tests can be requested as option, but are subject to prior agreement of the supplier : − temperature rise test carried out in accordance with the simulated loading method as defined by the IEC

60076-11 standard − lightning impulse test in accordance with IEC 60076-3 − short circuit test in accordance with IEC 60076-5 − noise level measurements in accordance with IEC 60076-10. (all the tests are defined by the HD 464 S1 Harmonisation Document : 1988, the IEC 60076-11 and IEC 60076-1 to 60076-5 standards).

9. Climatic and Environmental classifications These transformers will be of climatic class C2 and of environmental class E2 as defined in appendix B of HD 464 S1: 1988 / A2 : 1991. C2 and E2 classes will be indicated on the rating plate. The manufacturer must produce a test report from an official laboratory for a transformer of the same design as those produced.


The tests must have been performed in accordance with appendix ZA and ZB of CENELEC HD 464 S1 : 1988 / A3 : 1992.

10. Fire behaviour classification These transformers will be of class F1 as defined in article B3 of CENELEC HD 464 S1 : 1988 / A2 : 1991. F1 class will be indicated on the rating plate. The manufacturer must produce a test report from an official laboratory on a transformer of the same design as those produced and on the same transformer which have initially passed the here above Climatic and Environmental tests. This test must have been performed in accordance with appendix ZC of CENELEC HD 464 S1 :1988 / A3 : 1992.


10.1 Technical Data For each requested transformer, the supplier will give the following data : Rated power…………………………………………………………………….. kVA Cooling………………………………………………………………………….. Quantity…………………………………………………………………………. Rated frequency…………………………………………………………………. Hz Rated primary voltage…………………………………………………………… kV Rated primary insulation level…………………………………………………… kV Applied voltage to industrial frequency ………………………………………… kV Basic Insulation Level (BIL) or impulse………………………………………… kV Off-circuit tapping………………………………………………………………. . % Secondary voltage at no load between phases……… V phase to neutral……… V Rated secondary insulation level…………………….………………………….. kV Applied secondary voltage to industrial frequency……………………………. kV Vector group………………………………………………………………………. No load losses…………………………………………………………………….. W Load losses at 75° C……………………………………………………………… W Load losses at 120° C…………………………………………………………….. W Rated impedance voltage at 120° C……………………………………………… % Acoustic power Lw(A)…………………………………..……………………….. dB(A) Acoustic pressure at 1 metre Lp(A)……………………….…………………….. dB(A) Maximum ambient temperature…………………………………………………. °C Daily average ambient temperature…………………………..………………… °C Yearly average ambient temperature…………………………..……………….. °C Maximum altitude……………………………………………………..………….. m HV winding temperature class…………………………………………………… F LV winding temperature class……………………………………………………. F Temperature of insulation system………………………………………………… 155°C Climatic classification (HD 464 S1)………………………………………………. C2 Environmental classification (HD 464 S1)……………………………………….. E2 Fire behaviour classificat ion (HD 464 S1)………………………………………… F1

Enclosure………………………………………………………………………….. YES NO* Protection degree…………………………………………………………………. IP 31 Length……………………………………………………………………………. mm Width…………………………………………………………………………….. mm Height……………………………………………………………………………. mm Total weight……………………………………………………………………… kg Measurement circuit supply voltage for the thermal protection electronic converter DC AC* V

* delete as necessary


Detailed Technical specification for LV switchboard Prisma Plus P


a Low Voltage Switchboard

Prisma Plus System P


1. The Low Voltage Switchboard general rules

This document describes the general rules to guarantee the maximum level of quality and performances for a Low Volt age Switchboard. In the aim to reach this requirement, the entire equipment must be in appliance according to the specifications defines in the IEC Standard : 60439-1 The IEC 60439-1 applies to low voltage switchgear and controlgear assemblies for a voltage which does not exceed 1000V in alternative current at frequencies not exceeding 1000 Hz, or for 1500 V in d.c. This Standard is also applicable for all Assemblies intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electric energy consuming equipment. To guarantee the installation consistency during the switchboard life cycle, the installation systems and the devices must be supplied by the same manufacturer.

2. The Manufacturer Requirements In order to be conform to the IEC 60439-1, the Switchboard has amongst other things to succeed Seven tests in the most critical configurations. Hereafter the detail of those 7 type tests : No. 1 - temperature rise limits No. 2 - dielectric properties No. 3 - short-circuit withstand No. 4 - protective circuit effectiveness No. 5 - clearances and creepage distances No. 6 - mechanical operation No. 7 - degree of protection Thanks to the full achievement of those 7 type tests, the Switchboard exploiters have the insurance that the equipment properly assembled (according the manufacturers rules) is capable to support the maximum performances announced by the assembler. The Switchboard supplier must provide a copy of the first page of theses seven certificates.

3. The Switchboard Assembler requirements To complete the conformity to the standard, the switchboard assembler has to achieve three others tests after the complete assembly. Hereafter the 3 type tests performed by the assembler : No. 8 - general inspection No. 9 - insulation / dielectric test No. 10 - protection measures. Thanks to the full achievement of those 3 type tests, the Switchboard exploiters have the insurance that the equipment is conformed to the electrical drawings and to the manufacturer rules. A copy of these routines tests fully completed by the assembler must be present within or close to the switchboard on its exploitation site.

4. The Switchboard design requirements The following rules of design have to be implement in the aim to facilitate the assembly and especially the maintenance of the installation. The switchboard must be designed the way to have a clearly visible separation between the 3 following zones:

> one dedicated for the devices installation > one dedicated for the busbars mounting


> and one dedicated for the outgoers cables connections The goal of that architecture is to separate the switchboard in different areas in function of each professional user.

> devices zone => panelbuilder and exploiter > busbars zone => panelbuilder > cable connection zone => installer and maintenance

In order to facilitate the access within the switchboard for the maintenance, its covering panels must be dismountable on all surfaces for any IP degree. All the devices must be installed onto dedicated mounting plate designed for one or several switchgears of the same type. The objective of that point is to regroup the protection equipment of the same nature each others and distinguish inside the switchboard the function of each device or group of devices. Theses mounting plates will have an independent fixing system affording them to be transformed and moved anywhere in the switchboard and especially to make it easier the installation evolution. To insure the maximum protection of people around the electrical installation, front plates must be installed in front of all control and protection equipment in order to avoid a direct access without a tool to the devices and consequently to the active parts. for safety reasons and especially when the door will be opened during the switchboard working, all busbars have to be covered by barriers onto the whole perimeter of the busbars zone. To achieve that requirement, the switchboard specification must comply with the partitioning rules at the minimum level of form 2.

5. The life cycle of the Switchboard Due to the continual evolutions of the electrical needs for the buildings or for the factories, the distribution switchboards must be made the way to have the capacity to follow those evolutions. That’s the reason why, they need to meet the following requirements: > To make it easier and quicker, the switchboard offer must include dedicated components affording the adjunction of one or several wall mounting & floor standing enclosures or cubicles on the exploitation site. > In order to facilitate the current maintenance, e.g. infra red measurement, the devices zone has to be accessible in one operation. > The final customers will have the possibility to obtain some spare parts ten years after the commercialisation ending of the switchboard offer in order to be able to replace some components for maintenance or evolution needs. > For maintenance needs, the cubicle extraction and reintegration in the middle of the switchboard must be made without operation onto the adjacent cubicles.

6. The Switchboard Technical Specifications In more of the specifications detailed from the chapter 1 to 5, remain with the environment, mechanical and electrical characteristics to fill in order to complete the full definition of the Switchboard. Environment Altitude < 2000 m Other Value =

Ambient temperature 25° C 35° C 45° C 55° C

Relative humidity 80% (35°C) Other Value =

Climatic ambience T2 Other Value=


Mechanical Protection degree extern IP30 IP31 IP43 IP55

Protection degree intern A B C D

Protection degree against impact IK07 IK08 IK10

Level of partitioning Form1 Form2a Form3a Form4a Form2b Form3b Form4b

Door locking Without With N° of Key

Colour of Envelop RAL 9001 Other Value= RAL

Colour of Framework RAL 9001 Other Value= RAL

Colour of Installation systems RAL 9001 Other Value= RAL

Colour of Repartition elements RAL 7032 Other Value= RAL

Electrical ype of Voltage AC DC

Frequency 50Hz 60Hz Other Value=

Nominal Voltage 400V 690V Other Value=

Nominal Current (A) Value=

Nominal Apparent Power (VA) Value=

Short circuit withstand (kA) Value=

Earthing Schematics T.T I.T T.N.C T.N.S T.N.C-S

Specifications of devices ------------------------------------------------------------------------------------------------------------------------------ Number Feeders > 1600 A 1000 A < Feeders < 1600 A 630 A < Feeders < 1000 A 400 A £ Feeders £ 630 A 100 A £ Feeders £ 250 A Feeders < 100 A Percentage of spares space

List below the specifications of all incoming and outgoers devices l Number of incoming devices : Value = Incoming by cables : Incoming by busways :


l Coupling devi ces Yes No If yes : how many ? : Value = l Number of feeders : Total = l Control circuit : Yes No If yes : type of voltage : AC DC Value of voltage : Value =


Prisma Plus G


a Low Voltage Switchboard

Prisma Plus System G


1. The Low Voltage Switchboard general rules

This document describes the general rules to guarantee the maximum level of quality and performances for a Low Voltage Switchboard. In the aim to reach this requirement, the entire equipment must be in appliance according to the specifications defines in the IEC Standard : 60439-1 The IEC 60439-1 applies to low voltage switchgear and controlgear assemblies for a voltage which does not exceed 1000V in alternative current at frequencies not exceeding 1000 Hz, or for 1500 V in d.c. This Standard is also applicable for all Assemblies intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electric energy consuming equipment. To guarantee the installation consistency during the switchboard life cycle, the installation systems and the devices must be supplied by the same manufacturer.

2. The Manufacturer Requirements In order to be conform to the IEC 60439-1, the Switchboard has amongst other things to succeed Seven tests in the most critical configurations. Hereafter the detail of those 7 type tests : No. 1 - temperature rise limits No. 2 - dielectric properties No. 3 - short-circuit withstand No. 4 - protective circuit effectiveness No. 5 - clearances and creepage distances No. 6 - mechanical operation No. 7 - degree of protection Thanks to the full achievement of those 7 type tests, the Switchboard exploiters have the insurance that the equipment properly assembled (according the manufacturers rules) is capable to support the maximum performances announced by the assembler. The Switchboard supplier must provide a copy of the first page of theses seven certificates.

3. The Switchboard Assembler requirements To complete the conformity to the standard, the switchboard assembler has to achieve three others tests after the complete assembly. Hereafter the 3 type tests performed by the assembler : No. 8 - general inspection No. 9 - insulation / dielectric test No. 10 - protection measures. Thanks to the full achievement of those 3 type tests, the Switchboard exploiters have the insurance that the equipment is conformed to the electrical drawings and to the manufacturer rules. A copy of these routines tests fully completed by the assembler must be present within or close to the switchboard on its exploitation site.

4. The Switchboard design requirements The following rules of design have to be implement in the aim to facilitate the assembly and especially the maintenance of the installation. The switchboard must be designed the way to have a clearly visible separation between the 3 following zones:

> one dedicated for the devices installation > one dedicated for the busbars mounting


> and one dedicated for the outgoers cables connections The goal of that architecture is to separate the switchboard in different areas in function of each professional user.

> devices zone => panelbuilder and exploiter > busbars zone => panelbuilder > cable connection zone => installer and maintenance

In order to facilitate the access within the switchboard for the maintenance, its covering panels must be dismountable on all surfaces for any IP degree. All the devices must be installed onto dedicated mounting plate designed for one or several switchgears of the same type. The objective of that point is to regroup the protection equipment of the same nature each others and distinguish inside the switchboard the function of each device or group of devices. Theses mounting plates will have an independent fixing system affording them to be transformed and moved anywhere in the switchboard and especially to make it easier the installation evolution. To insure the maximum protection of people around the electrical installation, front plates must be installed in front of all control and protection equipment in order to avoid a direct access without a tool to the devices and consequently to the active parts. for safety reasons and especially when the door will be opened during the switchboard working, all busbars have to be covered by barriers onto the whole perimeter of the busbars zone. To achieve that requirement, the switchboard specification must comply with the partitioning rules at the minimum level of form 2.

5. The life cycle of the Switchboard Due to the continual evolutions of the electrical needs for the buildings or for the factories, the distribution switchboards must be made the way to have the capacity to follow those evolutions. That’s the reason why, they need to meet the following requirements: > To make it easier and quicker, the switchboard offer must include dedicated components affording the adjunction of one or several wall mounting & floor standing enclosures or cubicles on the exploitation site. > In order to facilitate the current maintenance, e.g. infra red measurement, the devices zone has to be accessible in one operation. > The final customers will have the possibility to obtain some spare parts ten years after the commercialisation ending of the switchboard offer in order to be able to replace some components for maintenance or evolution needs. > For maintenance needs, the cubicle extraction and reintegration in the middle of the switchboard must be made without operation onto the adjacent cubicles.

6. The Switchboard Technical Specifications In more of the specifications detailed from the chapter 1 to 5, remain with the environment, mechanical and electrical characteristics to fill in order to complete the full definition of the Switchboard. Environment Altitude < 2000 m Other Value =

Ambient temperature 25° C 35° C 45° C 55° C

Relative humidity 80% (35°C) Other Value =

Climatic ambience T2 Other Value=


Mechanical Protection degree extern IP30 IP31 IP43 IP55

Protection degree intern A B C D

Protection degree against impact IK07 IK08 IK10

Door locking Without With N° of Key

Colour of Envelop RAL 9001 Other Value= RAL

Colour of Framework RAL 9001 Other Value= RAL

Colour of Installation systems RAL 9001 Other Value= RAL

Colour of Repartition elements RAL 7032 Other Value= RAL

Electrical Type of Voltage AC DC

Frequency 50Hz 60Hz Other Value=

Nominal Voltage 400V 690V Other Value=

Nominal Current (A) Value=

Nominal Apparent Power (VA) Value=

Short circuit withstand (kA) Value=

Earthing Schematics T.T I.T T.N.C T.N.S T.N.C-S

Specifications of devices ------------------------------------------------------------------------------------------------------------------------------ Number 400 A £ Feeders £ 630 A 100 A £ Feeders £ 250 A Feeders < 100 A Percentage of spares space

List below the specifications of all incoming and outgoers devices l Number of incoming devices : Value = Incoming by cables : l Coupling devices Yes No If yes : how many ? : Value = l Number of feeders : Total = l Control circuit : Yes No


If yes : type of voltage : AC DC Value of voltage : Value =


Detailed Technical specification for Busbar trunking system


KSA


Busbar trunking systems for power distribution

Canalis KS are designed for power distribution with high density of tap-off outlets : - KS : runs with rated current from 100 up to 1000 A and feeding loads until 400 A max


1. Definitions A busbar trunking system comprises a set of conductors protected by a casing. Used for the transmission and distribution of electrical power, busbar trunking systems have all the necessary features for fitting: connectors, straights, elbows, hangers, etc. The tap-off outlets placed at regular intervals make power available at every point in the installation.

Straight length

Tap-off unit to plug in outlets and feed power to

loads (machines)

Elbow End feed unit

End cover

Fixing bracket

Tap-off outlet

2. Standards Busbar trunking systems must meet all rules stated in IEC 439-2. This defines the manufacturing arrangements to be complied with in the design of busbar trunking systems (e.g.: temperature rise characteristics, short-circuit withstand, mechanical strength, etc.) as well as test methods to check them. Standard IEC 439-2 defines 13 compulsory type-tests on configurations or system components. By assembling the system components on the site according to the assembly instructions, the contractor benefits from conformity with the standard.

3. Introduction to KS range

3.2 Canalis KS Canalis KS is designed for medium-power distribution with high tap-off densities in industrial and commercial buildings (factories, exhibition halls, supermarkets, etc.). Canalis KS suits as well in multi-storeys buildings (office buildings, hotels, hospitals, car parks and ships).. It’s used as risers to distribute power to each floor. The range is available in eight ratings: 100, 160, 250, 400, 500, 630, 800 et 1000 A.


4. KS conception – Rising mains for power distribution in multi-storey buildings

4.1 General Canalis KS Complies with standards IEC 60439-2 and EN 60439-2.

4.2 Characteristics Degree of protection: IP55 Number of live conductors: 4. Rated insulation voltage: 690 V. Rated current (Inc): 100 A, 160 A, 250 A, 400 A, 500 A, 630 A, 800 A and 1000 A. The cross-sectional area of the protective conductor is at least 50% that of the phases.

4.3 Fire resistance − Fire barriers as per standard ISO 834 (DIN 4102-part 9) for passages through partitions. − Resistant to flame propagation in compliance with standard IEC 60332 - part 3. − Materials resistant to abnormal heat (glow-wire test as per IEC 60695-2-1). All plastic components are halogen free.

4.4 Straight lengths design − The enclosure, made of sheet steel, galvanised and pre-lacquered RAL 9001 white. − The four aluminium conductors are mounted on fibreglass reinforced polyester insulators. All electrical

contacts are made of silver -plated copper. − The straight lengths have a tap-off unit every 0.5 metre on one side. There are four tap-off units per floor for

floor heights between 3.5 and 4.8 metres, or three tap -off outlets per floor for floor heights less than 3.5 metres. The tap-off outlets are equipped with automatic shutters that avoid accidental contact with live parts. The protective conductor is electrically connected to the enclosure at each jointing unit.

− Electrical contact between two components is ensured by flexible contacts designed to adapt to the difference in expansion between the conductors and the enclosure. It is possible to check visually that the electrical contact is effective. - The mechanical junction between two components is ensured by four captive screws. The jointing unit (3) is maintenance free.

− Special components are available to change direction or avoid obstacles.

4.5 Fire barrier design - A fire barrier can be installed when the riser passes through a floor to avoid any risk of fire propagation from one floor to another via Canalis KS trunking. Two-hour fire resistance (A120) is provided in compliance with standard ISO834 (DIN 41-2-part 9).

4.6 Hanging design The riser can be maintained by a special bottom support or a spring-based fixing device on each floor of the building (depending on the height of the building).

4.7 Plug-in unit design The tap-off units have the following characteristics: − connection and disconnection are possible only with the cover open, − the contact of the protective conductor ensures automatic opening of the shutters and polarises the tap-off

unit, − there is no access to live parts when the cover of the tap-off unit is open

(wire 1 mm in diameter, IPxxD), − when the tap-off unit is plugged in, the earthing contact connects first, followed by the phases, − tap-off unit positioning on the trunking does not require a tool, − it is not possible to close the cover before the tap -off unit is mechanically locked on the trunking, − tap-off units can be equipped with modular devices or moulded case circuit breakers.


Technical specifications

Canalis KDP Cable with prefabricated tap-offs for lighting distribution

Complies with standards IEC 439-2 and EN 60439-2. Complies with standard IEC 60502-1 for the cable (double insulation, 1000 V). Degree of protection: IP55. Number of live conductors: 2 or 4. Rated insulation voltage: 690 V. Rated current (Inc): 20 A Fire resistance • Materials resistant to abnormal heat (glow-wire test as per IEC 60695-2-1). • Class C2 for the halogen free version. All plastic components are halogen free. Straight lengths constitute the basic structure of the line and are made up of: • a ribbon cable (1) with three or five 2.5 mm2conductors made of tinned copper. Conductor insulation and

sheathing are made of cross-linked polyethylene (XLPE), • tap-off outlets (2), factory fitted at regular intervals. Compliant with standard

IEC 439-2, they can supply luminaires under energised conditions using KBA and KBB tap-off units. The other line components consist of: • the fixing system (3) used to attach the line to the sides of cable trays, metal structures or directly to

concrete slabs, • 10 A tap-off units (4), pre-wired or not, with phase selection, or 16 A tap-off units with terminals or fuses,

used to supply luminaires and to install them under energised conditions, • a range of prefabricated tap-off units for local control of luminaires (5) for single and double-circuit switching,

two-way switching and impulse switches.


KNA


Busbar trunking systems for power distribution

Canalis KN are designed for power distribution with high density of tap-off outlets : - KN : runs with rated current from 40 A up to 160 A and feeding loads until 63 A max


1. Definitions A busbar trunking system comprises a set of conductors protected by a casing. Used for the transmission and distribution of electrical power, busbar trunking systems have all the necessary features for fitting: connectors, straights, elbows, hangers, etc. The tap-off outlets placed at regular intervals make power available at every point in the installation.

Straight length

Tap-off unit to plug in outlets and feed power to

loads (machines)

Elbow End feed unit

End cover

Fixing bracket

Tap-off outlet

2. Standards Busbar trunking systems must meet all rules stated in IEC 439-2. This defines the manufacturing arrangements to be complied with in the design of busbar trunking systems (e.g.: temperature rise characteristics, short-circuit withstand, mechanical strength, etc.) as well as test methods to check them. Standard IEC 439-2 defines 13 compulsory type-tests on configurations or system components. By assembling the system components on the site according to the assembly instructions, the contractor benefits from conformity with the standard.

3. Introduction to KN ranges Canalis KN is designed for low-power distribution. There are two versions: • Canalis KNA: busbar trunking with four live conductors (3L + N + PE), for distribution up to 160 A, − Canalis KNT: identical to KNA, but equipped with a transmission bus with three 2.5 mm² conductors (except

160 A). This bus can be used to set up simple control/monitoring systems (lighting or otherloads).

4. KN Conception

4.1 General Canalis KN Complies with standards IEC 60439 -2 and EN 60439-2


4.2 Characteristics: Degree of protection: IP55. Number of live conductors: 4. Rated insulation voltage: 500 V. Rated current (Inc): 40 A, 63 A, 100 A and 160 A

4.3 Fire resistance Resistant to flame propagation in compliance with standard IEC 60332 - part 3. Materials resistant to abnormal heat (glow-wire test as per IEC 60695 -2-1). All plastic components are halogen free.

4.4 Straight lengths design Straight length constitute the basic structure of the line and are made up of: − An enclosure, made of sheet steel, galvanised and painted RAL 9001, serving as the protective conductor

(PE), − Four aluminium conductors supported along their entire length by an insulator. − All electrical contacts are made of silver-plated copper, − Three additional copper conductors (remote-control circuit) on request, − Tap-off outlets every 0.5 or 1 metre, on one side of the trunking. The tap-off outlets are equipped with

automatic shutters that avoid accidental contact with live parts, − A mechanical junction unit with flexible contacts for the mechanical junction between two components.

These contacts are designed to adapt to the difference in expansion between the conductors and the enclosure,

− An electrical junction unit for the electrical junction between two components with four captive screws that also ensure the continuity of the protective conductor. The jointing unit is maintenance free

4.5 Fixing bracket design The fixing brackets are designed for suspension or fixing to a wall every 3 metres (unless otherwise specified),

4.6 Tap-off units design The tap-off units should have the following characteristics − The contact of the protective conductor ensures automatic opening of the shutters and polarises the tap -off

unit, − When the tap-off unit is plugged in, the earthing contact connects first, followed by the phases, − There is no access to live parts when the cover of the tap-off unit is open (wire 1 mm in diameter, IPxxD), − Tap-off units can be equipped with fuses or modular devices, − Trunking and tap -off units can be equipped with colour -coded interlocking devices to restrict connection to

certain tap -off units,


Glossary Service reliability Definition: the ability of a power system to meet its supply function under stated conditions for a specified period of time. Different categories: − Minimum: this level of service reliability implies risk of interruptions related to constraints that are

geographical (separate network, area distant from power production centers), technical (overhead line, poorly meshed system), or economic (insufficient maintenance, under-dimensioned generation).

• Standard • Enhanced: this level of service reliability can be obtained by special measures taken to reduce the

probability of interruption (underground network, strong meshing, etc.) Installation flexibility Definition: possibility of easily moving electricity delivery points within the installation, or to easily increase the power supplied at certain points. Flexibility is a criterion which also appears due to the uncertainty of the building during the pre-project summary stage (APS). Different categories: • No flexibility: the position of loads is fixed throughout the lifecycle, due to the high constraints related to the

building construction or the high weight of the supplied process. E.g.: smelting works. • Flexibility of design: the number of delivery points, the power of loads or their location are not precisely

known. • Implementation flexibility: the loads can be installed after the installation is commissioned. • Operating flexibility: the position of loads will fluctuate, according to process reorganization.

Examples: • industrial building: extension, splitting and changing usage − office building: splitting

Load distribution Definition: a characteristic related to the uniformity of load distribution (in kVA / m²) over an area, or throughout the building. Different categories: − uniform distribution: the loads are generally of an average or low unit power and spread throughout the

surface area or over a large area of the building (uniform density). E.g.: lighting, individual workstations • intermediate distribution: the loads are generally of medium power, placed in groups over the whole building

surface area. E.g.: machines for assembly, conveying, workstations, modular logistics “sites” • localized loads: the loads are generally high power and localized in several areas of the building (non-

uniform density). E.g.: HVAC Power interruption sensitivity Definition: the aptitude of a circuit to accept a power interruption Different categories: • “Sheddable” circuit: possible to shut down at any time for an indefinite duration • Long interruption acceptable: interruption time > 3 minutes * • Short interruption acceptable: interruption time < 3 minutes * • No interruption acceptable.


Disturbance sensitivity Definition: the ability of a circuit to work correctly in presence of an electrical power disturbance. A disturbance can lead to varying degrees of malfunctioning. E.g.: stopping working, incorrect working, accelerated ageing, increase of losses, etc… Types of disturbances with an impact on circuit operations: • brown -outs, • overvoltages • voltage distortion, • voltage fluctuation, • voltage imbalance. Different categories: • low sensitivity: disturbances in supply voltages have very little effect on operations. E.g.: heating device. • medium sensitivity: voltage disturbances cause a notable deterioration in operations. E.g.: motors, lighting. • high sensitivity: voltage disturbances can cause operation stoppages or even the deterioration of the

supplied equipment. E.g.: IT equipment. The sensitivity of circuits to disturbances determines the design of shared or dedicated power circuits. Indeed it is better to separate “sensitive” loads from “disturbing” loads. E.g.: separating lighting circuits from motor supply circuits. This choice also depends on operating features. E.g.: separate power supply of lighting circuits to enable measurement of power consumption. Environment, atmosphere Definition: a notion taking account of all of the environmental constraints (average ambient temperature, altitude, humidity, corrosion, dust, impact, etc.) and bringing together protection indexes IP and IK. Different categories: • Standard: no particular environmental constraints • Enhanced: severe environment, several environmental parameters generate important constraints for the

installed equipment • Specific: atypical environment, requiring special enhancements Maintainability Definition: level of features input during design to limit the impact of maintenance actions on the operation of the whole or part of the installation. Different categories: • Minimum: the installation must be stopped to carry out maintenance operations. • Standard: maintenance operations can be carried out during installation operations, but with deteriorated

performance. These operations must be preferably scheduled during periods of low activity. Example: several transformers with partial redundancy and load shedding.

• Enhanced: special measures are taken to allow maintainance operations without disturbing the installation operations. Example: double-ended configuration.

example office tower

Documents

technical appendix n4

technical appendix n1

technical appendix n3

technical appendix n2

main lv distribution

circuit distribution

general definition

circuit configuration