premset : a new generation of mv switchgear

Premset : A New generation of MV Switchgear

Amith GanasramAugust 15, 2014

Schneider Electric 2- Energy – Premset – Weili Ding - Sep 2013

Wiki : “Innovation is finding a better way of doing something.

The term innovation can be defined as something original and, as a consequence, new, that "breaks into" the market or society.”

Schneider Electric 3- Premset Openline

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What’s Premset and where is it sold ?● Premset core technical application

● Compact, modular, smart ready switchgear● Circuit breaker up to 17.5KV, 1250A, 25 KA 3s, IAC 25 KA 0,5s

● Market main application: ● Low-end Primary● High End Secondary

●Targeted segments● CIB : Commercial and Industrial Buildings● Utility : MV/MV Substations● Data Centres● Hospital● Industry● MMM● Infrastructure


Voice from Customers in MV Distribution network

- “ you have to take in account the smart grid trend ”

- “ expected life duration of switchgear is increasing ”

- “ maintenance-free is far more important than SF6-free”

- “ we want a switchgear with Easy Operation for our maintenance and operation teams”

- “ cost effective and compact Circuit Breakers are needed for small primary substations or loop management ”

- “ no problems with GIS switchgear, because reliable in harsh environment (humidity, temperature, dust, poor installation, partial discharges) ”

- “ I’ll never compromise about end-users safety ”


New generation of switchgear - Premset

Premset


Key BenefitsS

impl

e -

Saf

e -

Sm

art

Safety

Reliability

Flexibility

Efficiency


Premset Totally Shielded Solid Insulation System design for optimized safety and extended equipment life

3

1

2

1- Low Voltage cabinet

2- Cable test

3- Top connections

4 - Core unit

5 - Bottom connections

6 - Bottom compartment

7 - Sensors (CTs and VTs)

8 - Gas exhaust duct

4

5

6

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All surfaces at earth potential● No dielectric ageing● Long product life expectancy● Reduced internal arc risk● Accidentally touchable● Insensitive to harsh environment

Safety & Reliability - SSISTotally Shielded Solid Insulation System design for optimized safety and extended equipment life


Safety & Reliability - SSIS

Well-known

Technologies

(epoxy, EPDM*)

All surfaces at earth potential

*EPDM: Ethylene Propylene Diene Monomer rubber

Single bus bar (630A) Cable connection

Busbars with shielded solid insulationPatented flat connectics

Solid insulation

covered by a

conductive layer


Safety & Reliability - SSISEarth shield continuity ensured by Patented Flat Interface

Main advantages compared with traditional conical interface ● Simplicity of installation● Compactness● Flexibility

Flat interface cross-sectionElectrical field calculation .


Safety & Reliability – 3 Position SchemeDisconnection in vacuum & earthing switch in controlled air

● redundancy of isolation

- vacuum bottles for breaking

and disconnection

- controlled air for downstream

earthing switch in sealed-for-life screened tank.

Breaking and disconnection

Earthingswitch

Operation of earthingswitchOperation of mainswitch


“The most intuitive operations for breaking, disconnection and earthing”

3-in-1 integrated architecture: easiest and safest operation, with built-in interlocking

Safety & Reliability - Interlocking


Safety & Reliability – 3 Position SchemeDisconnection in vacuum & earthing switch in controlled air


Safety – Cable Testing Device Cable testing and diagnosis: dedicated device, for easy access and total safety

● Cable testing without accessing cable box or dismantling cable connections

● Test device connection from the front of the switchboard, while cables remain earthed

● Failsafe interlocks with earthed star point

Easy cabling All cables connections are aligned in front at a height of 700 mm


Safety – Cable Testing DeviceCable testing and diagnosis: dedicated device, for easy access and total safety


Safety & Reliablity – Live Cable Interlocking Live cable interlock - Electrical lock-out of earthing switch when live cables

● Earthing switch lock-out function

- Prevent the earthing switch to be closed on earth when cables are still alive

- Positively blocked in case of auxiliary power loss

- Override unlocking by key

- Remote indication of locked position


Efficiency Flexible approach & Embedded intelligence in switchgear

Today: set of products to connect - Protections: Sepam, Micom

- Measurement metering: Power Logic

- Local fault monitoring & Remote control: Easergy

Sepam & Micom

Easergy

Power Logic

Modules fully integrated in functional unit - Including sensors, switchgear interface, power supply, communication, HMI

- Pre- engineered, factory-tested, cost effective

- Easy integration based on :. Field bus communication between modules. Pre-cabling inside cubicle

- Gradual solution : from local control up to complex feeder automation


Efficiency“Integrated intelligence” in MV switchgear

SC100

Energy Quality Monitoring

Self powered Protection

Flair

Modbus

Faultdetection

VIPPM200

Switch Controller

R200 PS100

Power SupplyRTU/ATS

SMART

- IEC61850 access to Substation automation through gateway (G3200…)


Efficiency Low cost Supervision & Control system

Example of web access

● Switchboard information is stored in a Web page● Need just a PC, Tablet, Smart Phone with a standard Web browser


FlexibilityA new level for MV switchgear Modularity ► assembly of functional bricks

CBCBLBSLBS CB

LV cabinet

Cable test

Top connection

Bottom connections

Bottom compartment

Core unit

Metering


Technical Description & Applications


Main Characteristics

Rated voltage 15 kV

Short time withstand 25 kA x 3s*, 21 kA x 3s, 20 kA x4s

Rated busbar current 630 A, 1250 A (under development)

Rated BIL withstand voltage 95 / 110 kV

Rated PF withstand voltage 42 / 48 kV 1mn

Cable earthing switch 25 kA, M0, E2

Degree of protection IP3X (indoor), IP54 (outdoor)

Dimensions W x H x D (mm) 375 x 1600 x 900 (indoor)

Ran

ge

* : 25kA x 3son request

Internal arc Standard design is virtually arc free Optional : type tested 21KA 1s A-FLR / 25KA 0.5s A-FLR

: top or bottom exhaust Comply with new IEC standard 62271-200 ALFR

INDOOR

OUTDOOR


Four basic functional units

630A disconnecting load break switch1000 operations

► I06 TNetwork management

100 or 200A disconnecting circuit breaker O-15 sec- CO2000 operations

► D01-02 NTransformer protection

630A disconnecting circuit breaker O-15 sec-CO.2000 operations

► D06 N Feeder protection

630A disconnecting circuit breaker O-0,3s-CO-15s-CO 10,000 operations

► D06 H Feeder protectionAuto-reclose


Typical applications

Building

Industry

Energy

2.25m

3.75 m

3.75 m

2.25 m

IEC standard 62271-200 ALFR


MV Innovation in 20 years – Premset !

Amith GanasramCell : 076 411 2263Tel: 011 254 6638Email: [email protected]

Thank you for your attention…

premset : a new generation of mv switchgear

Documents

energy premset weili

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life duration of switchgear

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