cable bus brochure 2010

7/31/2019 Cable Bus Brochure 2010

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The Most Rel iable, Cost-effective, Flexible & Maintenance-free Power Distr ibution System

CABLE BUS

POWER MAN UFAC TURIN G OIL & GAS CHEMICAL


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Decade ater Decade

Engineered to Outperorm

Most ReliableMP Husky Cable Bus utilizes continuous

runs o power cable (no aulty splices)

between terminations.More installations in more industries

than any other manuacturer. Certainty o DesiCable Support Blocks prov

continuous maintain

spacing and short circuit brac

(100,000kA standa

Polymer Cable Support Blocwill not decay, rot or lose structu

integrity or 50+ ye

Free Air RatiVentilated top and bottom cov

provide superior protect

and ventilati

Greater FlexibilNo Delays. Easily adjusted

the eld to or changes a

unoreseen obstac

Lowest installation costswithparallel conductors or entire run.

Our system does not interleave or

transpose cables in the bus housing,

this means it costs less to install.

Signifcant Cost SavingsFree Air Rating allows greater

ampacity with less copper -

up to 40% less copper!

Field proven or 60 years in themost extreme environments:

Corrosive, Heavy Salt, Chemical, Cold

(N. Canada), Hot (Saudi Arabia) and

tropical locations.

CSA CertifThe only Cable Bus System C

Certied to C22.2 #27 (Busways

C22.2 #201 (Metal Encl. HV Buswa

Most Reliable Lowest Cost Most Flexible Maintenance-Free

Decade ater decade, or 60 years and running, MP Husky continues to be the trusted and proven name in Cable Bus and

Cable Tray. With more systems installed in more industries and environments than any other manuacturer, you can rest

assured MP Husky has the experience and capability to meet your most demanding requirements. As we begin anothe

decade, MP Husky is stronger than ever and positioned to lead the industry with the latest innovations, eco-riendly

products, and engineering and manuacturing technologies. Our ocus continues to remain on providing unmatched

customer support, investing in our people, protecting the environment, and providing the most technologically

advanced and engineered systems. MP Husky - Engineered to Outperorm.


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m p h u s k y . c o m Copyright 2010 MP Husky. All rights reserved

CABLE BUS

3

Table o ContentsIntroduction ............................................................4

Features & Beneits .................................. ............... 5

Technical Inormation........................................ 6 -9

Electrical Design ............................................................ 6Parallel Conductors ........................................................ 6

Voltage Drop .................................................................. 6

Shielding ....................................................................... 6

System Balance .............................................................. 7

Short-Circuit Capacity...................................................7-8

Grounding.......................................................................9

Flexibility........................................................................9

Quality Assurance ................................................10

Ampacity Comparisons .......................................11

Voltage & Amperage Ratings .............................. 12

System Cross Sections & Dimensions .......... 13-19

600V System ................................................................ 13

5kV System .................................................................. 14

15kV System ................................................................ 15

35kV System ................................................................ 16

90 Horizontal Radius Fitting ........................................ 17

90 Vertical Outside Radius Fitting ............... ................ . 18

90 Vertical Inside Radius Fitting .................................. 19

Cable Bus System Layout .................................... 20

Match-Marked Layout Drawing . ......................... 21

Installation .................................... ......................... 22

System Components ............................................23

Industries / Client & Partners .............................. 24

Project Proiles ............................ .................. 25-28

Drawing Requirements ........................................29

MP Husky Cable Bus Speciication ..................... 30

Request or Quote Form ......................................31


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Cable Bus is an electrical busway that consists o an

assembly o ully insulated conductors mounted in a

ventilated metal housing, utilizing cable support blocks

to maintain cable phasing, spacing and short circuit

protection. The welded aluminum alloy enclosure is

provided in custom lengths, with each piece sized to t the

specic installation. The system includes all necessary

equipment connections, anges, cable, wall entrance

seals, re stops, elbows, osets, terminal lugs, termination

kits, and assembly hardware. A complete set o match-

marked layout drawings shows the location o each

section and accessories, or a simple and ast installation.

Superior Reliability

60 years o engineering, design and manuacturing

o Cable Bus systems with installations in nearly every

environment, MP Husky Cable Bus is proven and tested to

be the most reliable system on the market.

Five key eatures contributing to superior reliability:

High quality cables are continuous rom termination1.to termination, eliminating aulty splices.

MP Husky Cable Bus utilizes actory insulated2.

conductors that are designed and manuactured to

withstand the harshest outdoor environments.

Since our system design is not aected by

moisture and is ventilated or indoor and outdoor

applications, it does not require heater strips, ilter

breathers, or thermostats that competitive technolo-

gies require, leaving less parts to ail.

Each systems phasing arrangement is veriied by3.

computer-generated Inductive Reactance Calcula-

tions to ensure optimal load balance.

The systems sh ort ci rcuit capaci ty is tested to4.

over 100,000 RMS sym. amps. Engineered polymer

support blocks provide maximum perormance and

will not decay, rot or lose structural integrity rom

exposure to weather, unlike wood or iberglass.

Top and botto m covers are vent ilate d or optimum5.

cooling o conductors to achieve a ree air rating.

Actual Heat Rise Tests prove system design.

Lowest Cost

In most electrical applications over 1,000 amperes, Cable

Bus costs signicantly less than non-segregated bus duct

cable in tray or conduit and wire systems. As ampacity

and/or the cost o copper increases, the cost savings o

Cable Bus over other systems is even greater.

Since Cable Bus is continuous there are no power losses

rom intermediate splices or connections. Cable Bus has

a lower impedance and lower voltage drop because its

conductors are properly phased, spaced and secured in apre-engineered system. This reduces operating costs by

providing long-term energy savings. The use o paralle

conductors, combined with our ree air rating, allows you

to operate ully and efciently with smaller cables than

would be called or with other types o systems.

Unmatched Flexibility

MP Husky Cable Bus is easily adjusted to accommodate

unexpected dierences between engineering drawings

and actual construction, with little or no delay in the

project. Whereas rigid non-segregated phase bus duct

must be exact to make equipment terminations, MP

Husky provides additional cable and Cable Bus housing

to accommodate dierences or unoreseen obstacles that

were missed during design. I the placement o equip

ment requires a dierent bus length, supplemental Cable

Bus sections can be quickly adjusted in the eld to the

required length.

Introduction

MP Husky Cable Bus Systems are engineered and manuactured or superior reliability as well as to utilize less conductive material,

providing signicant savings versus non-segregated phase bus duct, conduit and wire, and other electrical eeders. As copper prices

have continued to remain at historically high levels, the savings clients realize are even greater and more important. No matter how

you look at it, MP Husky Cable Bus outperorms other electrical busways in reliability, cost and fexibility. See or yoursel why more

owners, engineers and buyers choose MP Husky Cable Bus Systems over the competition.


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CABLE BUS

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CABLE BUS

Testing and Certifcation The onlyCSA Certied Cable Bus system on the market.

Certied to CSA 22.2 #27 (Busways) and 22.2 #201 (Metal

Enclosed High Voltage Busways)

Actual Heat Rise Tests on widest range of system ratings.

Actual Short Circuit Tests up to 120kA RMS Symmetrical.

Actual Heat Rise Test verifying MP Husky Cable Bus in trench

applications.

Actual Load Tests conrm structural capability of housing,

including 20 spans

Match-Marked Layout Drawings Cable Bus system layout drawings are shipped complete with

match-marked numbers that correspond to each Cable Bus

section.

Product labels utilize large items numbers to facilitate quick

product location and installation.

Reliable Our system utilizes continuous runs of power cable (no faulty

splices) rom termination to termination.

MP Husky utilizes high quality, factory insulated cables.

Polymer cable support blocks (Fire Rated & Std) will not decay,

rot or lose structural integrity or 50+ years.

Lowest Cost Free Air Rating allows greater ampacity with less copper,

achieving signicant cost savings.

Substantial savings on materials and installation costs

compared to other systems.

Industry exclusive radiused ttings with tangents provide

easier, more cost eective and precise connections.

Flexible & AdaptableUnlike non-segregated bus duct, MP Husky Cable Bus systems

are easily adjusted in the eld to accommodate misplaced

equipment that oten occur during construction.

Easily routed around unforeseen eld obstructions

(i.e. piping, structural steel, equipment, etc.)

Our extensive custom fabrication capabilities ensure that

we can manuacture a system to meet all o your difcult

coordination challenges.

Free Air Rating or Conductors Up to 40% less conductive material (copper or aluminum)

is needed to carry ull rated current.

Minimum temperature rise due to ventilated enclosure and

maintained cable spacing by custom support blocks.

Maximum ampacity in accordance with ICEA listings for

90 degree Celcius rated conductors.

Indoor or Outdoor Applications Utilized for indoor or outdoor applications.

No special nishes are required with housing available in

Aluminum, Stainless Steel and HDGAF.

Excellent protection against adverse environments including

Paper Mills, Fossil, Chemical Plants, cold , hot and tropical

locations.

Features & Benets


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CABLE BUS

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Factory Fabricated - All Welded Bottom cable support block is factory pre-installed in Cable Bus

Housing.

Entire system is factory fabricated to t the specic

requirements o each individual project.

All welded constructed for maximum strength.

Engineering Services Experienced and knowledgeable engineering group that can

handle difcult coordination challenges.

Job specic testing and application engineering.

Engineering support prior to and during engineering &

construction, as well as during and after start-up.

Other engineering services available.

Proper Phase Balance MP Husky utilizes an Inductive Reactance Program to achieve

the proper cable spacing and phasing arrangement that ensures

low impedance and low voltage drop.

Balanced load carrying of conductors prevents over-heating of

cables.

Cable support blocks provide continuous maintained spacing.

Tangents Industry Exclusive - Faster, easier install.

Cleaner connection between ttings & straights.

Tangents on ttings provide at area for faster, easier

connection to supports.

Precise tting to tting connections when required.

Labor Savings Cables run in parallel throughout entire bus housing.

Our system does not interleave or transpose cables in the bus

housing. Lightweight, ventilated enclosure that two men can easily lift

12 or 24 length into position.

No special heavy erection equipment required.

Sae MP Husky Cable Bus is an all welded rigid construction.

Workmen free of shock hazards - no exposed bus elements,

only insulated conductors used.

Ventilated design prevents entry of foreign objects.

Support block design assures proper arrangement of

conductors.

Less Support Material Design criteria accomplishes high load carrying ability on long

spans with minimal support material.

Flush bottom design allows for use of standard support

material.

Complete System

MP Husky Cable Bus systems are complete with all necessaryttings or direction and elevation changes.

Termination boxes, equipment seals, restops and bus anges

(including weatherproof boxes-NEMA 4X).

Lugs, termination kits and adapter bus bars.

Features & Benets


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CABLE BUS

Selection o the proper Cable Bus system must be under-

taken with care to assure that it compliments the design

o the overall electrical power system.

Electrical DesignTo ensure an efcient, dependable, high quality installa-

tion, every MP Husky Cable Bus System is ully engineered

with particular emphasis placed on CABLES, SYSTEM

BALANCE, SHORT CIRCUIT CAPABILITY, and GROUNDING

REQUIREMENTS. Each one o these key design consider-

ations must be analyzed separately to determine how they

aect the overall system design.

Parallel ConductorsParallel conductors (more than one per phase) can be

used to an advantage in Cable Bus where large conduc-

tor sizes are encountered. The ampacity per circular mil

o conductor decreases as the circular mil o conductor

increases. Smaller conductors running parallel are more

exible during installation and have greater current

carrying capability than ewer, larger conductors.

Voltage DropProper system design dictates that voltage drop be

considered or both the power eeders separately as well as

the entire power system. A voltage drop o 3-4% or power

eeders and an overall o 5% or less or the entire system

are considered to be within acceptable limits. Cable Bus

is designed or low-voltage drop. Voltage drop data is

available upon request, or your specic system.

ShieldingShielding is used on power cables to conne thedielectric eld o the conductor to the cableinsulation. Shielded Power Cables are used in Cable Bus o

applications above 2500 volts and when any o theollowing conditions exist:

Where cables are subject to soot or other heavy1.deposits that may orm paths to ground.Where electrostatic discharge can eect nearby2.computerized control cables or other low levesignals.Concern or personnel saety.3.

When installing shielded cable the metallic shieldingmust be solidly grounded and the installation mustbe studied to determine the best grounding methodThis is necessary as voltage is induced in the shield o asingle conductor cable carrying alternating current dueto mutual inductance between its shield and any otheconductor in its vicinity. This induced voltage can result intwo conditions:

Metal shields bonded or grounded at multiple points1.creates shield to ground circulating currents. Themagnitude o the circulating currents depends on themutual inductance to the other cables, the current inthese conductors, and the resistance o the shield.Shields bonded or grounded at only one point wil2.

have a voltage build up in the sheath but will eliminatecirculating currents.

The length o the circuit and the load conditions wilindicate which o the above shielding methods isrequired or any particular reason. MP Huskysengineers can provide shield voltage calculations toaid the client in choosing the best grounding method

Technical Inormation


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System BalanceCable Bus is a power distribution system using insulat-ed single conductor power cables with support blocksthat maintain cable spacing. Each phase consists o

one or more cables connected in parallel. The completeassembly is enclosed in a ventilated aluminum or steelenclosure or support and protection.

Parallel conductor transmission lines, using widelyspaced conductors, have been in use or many years. Theelectrical coupling between the conductors o a parallelconductor system, which is a unction o the geometryo the location o the conductors, can cause an imbal-ance in the conductor currents. In a widely spaced over-head transmission line transposition o conductors caneconomically be used to balance the conductor currents.

The spacing o the conductors in Cable Bus is onecable diameter, (i.e. one to three inches), as comparedto the typical value o thirty eet used in overhead lines.This close spacing and the relatively short lengths, ascompared to hundreds o miles or overhead lines, makethe transposition o conductors within the bus housing a

difcult challenge and sometimes practically impossible.

The objective o the Cable Bus design is to

obtain the optimum balance or an electrical circuitusing parallel conductors (no transposition) with closespacing. MP Husky has developed an Inductive ReactanceProgram which solves or the line and phase currents oa parallel conductor system using a mathematical modelo the transmission line parameters. Through the use ocomputer programs and verication by laboratory andeld testing, MP Husky has designed Cable Bus Systemswith minimal imbalance.

MP Husky Cable Bus is designed or balance o conduc-tors within a phase (intra-phase) and balance betweenthe phases (inter-phase). Many phasing arrangementswill provide inter-phase balance o currents due to the

load impedance, but the majority o these phasingarrangements provide intra-phase current imbalance.

MP Huskys Cable Bus design provides a phasingarrangement that achieves inter-phase currentbalance, as well as intra-phase current balance, thereorereducing the amount o parallel conductor imbalance toa minimum.

Short Circuit CapacityA Cable Bus system must be able to withstand thedangerous mechanical orces created by shortcircuit currents. These orces are transmitted rom theconductors to the cable supports. In the case o CableBus, the support elements include the support blocks andenclosure.

Short circuit currents are made up o two parts; asymmetrical AC component and a rapidly decreasing DC component, (Fig. 5 on next page). A Cable Bussystem must be selected so that its mechanical strengthwill withstand the maximum instantaneous current andto a lesser degree the 5-8 cycle resultant symmetricacurrent. The symmetrical current is the actual value that ahigh voltage breaker will interrupt.



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CABLE BUS

Since Cable Bus is oten used or main eeder

connections, (e.g. substation, generator or transormer to

switchgear, load centers and high voltage machines), the

available short circuit current will be that o the utility or

generator supply through the transormers. In some

cases, the Cable Bus eeds large motors and the motor

contribution to short circuit must also be considered.

Numerous tables are available listing motor contributions

or various operating conditions.

Available ault currents can be limited to some extent by

conductor impedance. The impedance can be in the orm

o either conductor length, size or a combination o both.

The MP Husky Cable Bus design ignores these added

conductor impedance; instead the worst ault conditions

are always assumed. For design consideration a three

phase short circuit current will result in the maximum

mechanical orces or design considerations.

I Cable Bus is ed directly rom the utility company

service then short circuit current data will be available

rom the utility.

Where motor contributions are considered, the ault

current due to the motor eedback will be a unction

o the voltage and is usually expressed as multiples

o the motor ull load current. NEMA standards are

available which list these actors. Certied tests have been

conducted to determine the short circuit perormance o

Cable Bus using various supporting arrangements.

Short Circuit TestingThe Cable Bus systems were tested on a 600 volt, 3 phase

60Hz circuit having a power actor o less than 0.20

One end o the Cable Bus was connected to the source

terminals and the other was short circuited to create a

three phase bolted ault.

Each test was conducted or a minimum o six cycles

Oscillograms recorded the phase currents during the

test. Still photographs and high speed color motion

pictures were taken relevant to the test.

MP Husky Cable Bus has been subjected to currents

o 39,000, 67,500, 85,000, 100,000 and 120,000 RMS

symmetrical amperes with asymmetrical currents great-

er than 200,000 amperes. Cable Bus withstood the

mechanical orces o the test without any damage to the

cables, support blocks or enclosure.

MP Husky 4000Amp, 5kV Cable Bus system with

open air termination to GSU

transormer.



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GroundingA Cable Bus system must aord protection to lie andproperty against aults caused by electrical disturbances.Lightning, electrical system ailures, as well as ailures in

the system connected equipment all constitute possibleault hazard locations.

For this reason, all metal enclosures o the system, as wellas non-current carrying or neutral conductors should betied together and reduced to a common potential. Thisincludes the structural steel o the building, water, steamand gas piping.

There are two distinct divisions to the system andequipment grounding problem. The system ground is theconnection o the distribution system to earth by meanso a neutral or grounded conductor and system ground-ing serves to limit the voltage, which might appear on thecircuit due to lightning or accidental contact.

Cable Bus systems should be grounded to thesubstation structure and thus to the substation groundgrid and to the building steel by means o the Cable Bussupport materials. Cable Bus should also be grounded tothe equipment or switchgear enclosure.

It is an accepted act that ground currents tend toconcentrate near power conductors and that cable

enclosures take a large portion o the ground currents;thereore, it is important to consider Cable Bus as amajor carrier o ground currents.

MP Huskys Cable Bus enclosure is rated to carry 1600Aground current. Extra ground current capacity canbe provided by the application o external groundconductors bonded to each section o Cable Bushousing.

FlexibilityMP Husky Cable Bus systems are exible and adaptable

to the many unexpected circumstances that occur during

construction. Every size and rating o Cable Bus provided

is supplied with up to 5% extra cable as well as one spare

length o housing including cover, cable support blocks

and hardware. This enables the installer to adjust ou

system in the eld to discrepancies or dierence

between engineering drawings and actual eld

construction, with little or no delay o the project. And

our compact design and radius bends allow our system to

maneuver around and t in tight clearance applications.



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CABLE BUS

Our Quality Policy

At MP Husky we are committed to producing only the highest quality products that meet or exceed our customers

expectations and requirements. Our goal is to achieve 100% customer satisaction by delivering the best products and

services on-time and deect ree. We will achieve this individually and corporately through tested and proven processesand controls, in our Quality System, and with a constant ocus and eort on continuous improvement.

MP Husky is the only Cable Bus System certifed to CSA C22.2 #27 (Busways) and C22.2 #201.

Item Standards

MP Husky Quality Program ANSI / ASQC Q9001-2000 (ISO 9001 Compliant)

ASME NQA-1-2004

ANSI N45.2

Cable Manuacturers: General Cable,

Okonite, Kerite, Prysmian, & others

-Quality Assurance

-Manuacturing Standards

ISO9001

Includes ICEA, CSA, ANSI, IEEE

Certication CSA Certied to C22.2 No. 27 (Busways) and C22.2 No. 201 (Metal En -

closed High Voltage Busways)

CSA Certied to C22.2 No. 126.1-02 or Enclosure Grounding

UL Certied or Grounding

Load Test Standards NEMA VE-1/CSA Tray Standards

Cable Bus Support Standard NEMA VE-2

Heat Rise Standards ANSI C37.20, C37.24, actual test results available upon request

Cable Ampacity Standards IPCEA P-46-426; ICEA S-66-524; IEEE S-135

CSA CEC Part 1 & C22.2; Canadian CEC Table 1 & Table 5A

United States NEC 310-17 & 310.69

Fault Bracing Standards NEC Article 370

Short Circuit Certication Eaton High Power Test Labs, copy o test report available upon request

Grounding UL, CSA, NEC

Welding AWS D1.1 (American Welding Society Structural Welding Code: Steel)

AWS D1.3/D1.2: (American Welding Society Structural Welding Code:

Aluminum)

AWS C1.1/ANSI American Welding Society Recommended Practices or

Resistance Welding

ASME QW 100.1 American Society o Mechanical Engineers

Welding Procedure Specications (Procedure Qualications Record)

Certied Welding InspectorQC1-96 (On Sta)

100% o MP Husky welders are AWS Certied.

Nuclear Audited every three years since 1977 in conormance with 10 CFR50 Ap-

pendix B - Nuclear Standards (U.S. Nuclear Regulatory Commission)

Quality Assurance


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This table illustrates the greater current carrying capacity o MP Husky Cable Bus as compared toalternate methods. The increased capacity is due to ree air ventilation and engineered cable spacing andbalance phasing arrangement.

Based on NEC & ICEA Tables at 90 degrees Celcius in 40 degree Ambient.

Conductor

SizeMP Husky

Cable Bus

Interlocked

Armored Cable

(in Tray)

Three Single

Conductor Cables

in Conduit (in Air)

600V System 500 MCM

750 MCM

1000 MCM

637 Amps

805 Amps

960 Amps

405 Amps

500 Amps

585 Amps

477 Amps

598 Amps

689 Amps

5kV System 500 MCM

750 MCM1000 MCM

695 Amps

900 Amps1061 Amps

425 Amps

525 Amps590 Amps

473 Amps

579 Amps659 Amps

15kV System 500 MCM

750 MCM

1000 MCM

685 Amps

885 Amps

1040 Amps

470 Amps

570 Amps

650 Amps

481 Amps

588 Amps

677 Amps

600V Systems

(Canadian)

500 MCM

750 MCM

1000 MCM

594 Amps

760 Amps

900 Amps

355 Amps

450 Amps

526 Amps

355 Amps

450 Amps

526 Amps


Ampacity Comparisons


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CABLE BUS

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CABLE BUS

69kV

45kV

25kV

15kV

5kV

600V

800A 1200A 1600A 2000A 2500A 3000A 3500A 4000A 5000A 6000A 7000A

KEY

.Denite Cost Savings on these Available Ratings

Possibly Available or Economical, Consult Factory

Typically Outside Practical or Economical Range

MP Husky Cable Bus Features:Engineered System with the industry exclusive Inductive Reactance Calculations available upon request

or the design engineer.

High ault capacity. Cable Bus is certied up to 100kA RMS Symmetrical and has been tested up to

120kA RMS Symmetrical.

Lowest installation costs o any cable bus duct on the market, with the industry exclusive straight cable

runs. No cable transpositions within the housing, regardless o run length. Installation savings o 10%

to 25%, depending on run length and cable size.

Widest available range o Voltage Class and Ampere Ratings in the industry.

MP Husky Cable BusTypical Voltage & Current Ratings

Voltage & Ratings


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CABLE BUS

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Systems shown are 3 Phase / 3 Wire without system ground.

Systems can be 3 Phase / 4 Wire with ull, hal, or partial neutral with or without a system ground.

Combining circuits within the same enclosure is available.

For CSA equivalent data please contact the actory.

For additional amperage and voltage requirements please contact the actory.

600VCommon Cable Bus Systems


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CABLE BUS






5kVCommon Cable Bus Systems


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CABLE BUS








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System Cross Sections & Dimensions

90 Horizontal Radius Fitting

*Radii shown are to outside fange. Cable radius will be nominal radius or greater.

Industry exclusive tangents available or aster, easier installation.


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CABLE BUS

System Cross Sections & Dimensions90 Vertical Outside Radius Fitting

*Cable radius will be greater than nominal radius.



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System Cross Sections & Dimensions90 Vertical Inside Radius Fitting

*Cable radius will be greater than nominal radius.



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Match-Marked Layout Drawings


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CABLE BUS

The ollowing techniques are suggestedto pull cables into place:

Cables with an OD larger than 2 can be pulled by

pulling eye or a basket grip.

I the strain does not elongate or damage the

insulation then short lengths and small diametercables may be pulled with a basket grip only.

Long lengths o conductor (up to 1,000 t.), with as

many as a dozen bends, should be pulled in one

continuous operation at a speed o 20 to 25 t. per

minute. It may be necessary to employ a braked

reel to reduce sagging o the conductor between

horizontal rollers.

The most economical spacing o horizontal rollers

depends on the weight o cable to be pulled. In general,

the spacing o horizontal rollers should range betweenapproximately 10 t. or cable weighing over 8 pounds per

oot and 16 eet or cable weighing less than 2 pounds per

oot.

Ease o installation:

Typical weight o Cable Bus is 5-7 lbs. per t. (typical

weight o bar bus is 25-114lbs. per t.)

12 t. sections can easily be installed by two men - no

heavy equipment (cranes, booms, lits) are required.

Complete installation instructions and match-marked

layout drawings make installation easy to understand

and ast.

Installation


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Termination BoxesTransormer Termination Boxes, Switchgear/MCC Top Hats and other junction

boxes designed and supplied by MP Husky guarantee the needed space to properly

transpose the phases and terminate the conductors to the electrical equipment.

Standard termination boxes are aluminum welded angle rame construction with

bolted removable side panels and welded xed panels as needed. Painted steel

and stainless steel are also available. Outdoor boxes are NEMA 4X and use gasketed

removable panels, ully seam welded xed panels, and an ESF type seal to ensure a

water-tight enclosure.

Box ConnectorsBox connectors are used to connect the Cable Bus Housing to indoor electrical

equipment or entry into switchgear, MCCs, etc.

Tap BoxesTap boxes allow or intermediate load tapping. The design provides systemvoltage rated air separation between live parts and adjacent suraces to eliminate the

necessity o tapping all energized components. The tap box consists o:

Aluminum ramed enclosure

Removable covers (gasketed or outdoor applications)

Porcelain or Epoxy post stand o insulators

Plated Bus bars

Watertight Seals(Environmental Seal Flange -ESF)These ttings orm a seal with walls and can also be used or oor penetrations that

must be watertight. Conductors are sealed with RTV silicone sealant. Entrancettings are urnished with all necessary hardware.

MCT Firestop / Watertight SealMCT seals are used when a re rated and watertight seal is required. Neoprene

modules are inserted ater the cables are installed or ease o pulling. They are UL

listed or a 2 hour re rating and come with all necessary hardware.

Electrical ConnectorsTwo Hole Long Barrel Compression type lugs and Silicon bronzed termination

hardware are supplied with each project to ensure a long lasting, reliable connection

with electrical equipment.

Cable Termination KitsHeat or Cold Shrink Termination materials are supplied or all medium voltage Cable

Bus Systems and are rated or both indoor and outdoor use.

System Components



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Industries We SupportAirportsAutomotiveBankingCementChemical Plants

ConstructionData CentersFood & BeverageGovernment/MilitaryHospitals

IndustrialInstitutionsMetal IndustryMiningNuclear

O-ShoreOil & GasPetrochemicalPharmaceuticalPlastics

Power PlantsPulp & PaperReneriesRenewable EnergySchoolsSporting VenuesSteel IndustryTextilesUniversitiesWaste Water

Clients and Partners (partial listing)ABBAMECAmerican Electric PowerAlabama Power CompanyALCOA

AMOCOAndritz Hydro PowerArcher Daniels MidlandArkansas Light & PowerAT&TAVCO CorporationBechtelBE&KBendix CorporationBlack & VeatchBMW ManuacturingBP (British Petroleum)Burns & McDonnellBurns & RoeCaliornia Plaza

Carborundum Co.Case ElectricCB&ICentral Hudson G&ECentral Illinois Public ServicesCH2M HillChemicoChevronChrysler CorporationCleveland Electric IlluminatingCanadian Natural Resources Ltd.Colt EngineeringConemaugh StationCONOCOConsolidated AluminumCorningCP&L (Carolina Power & Light)Cupertino ElectricDashiell CorporationDayton Power & LightDetroit EdisonDow ChemicalDow CorningDravo CorporationDSMEDuke EnergyDuPontDuquesne Light Co.

Exxon/MobilEYP - Hewlett PackardFisher BodyFlorida Power & LightFluor Corporation

FMC CorporationGeorgia Electric EnergyGE EngineeringGE PowerGeorgia PacicGeorgia PowerGEXPROGoodyear Tire & RubberGrede FoundriesHawaiian ElectricHill ElectricHitachiHouston Power & LightHydro QuebecInternational Paper

Irving OilJ.I. CaseJacobs EngineeringJohn Deere CompanyKaiser AluminumKellogg, Brown & RootKentucky UtilitiesKiewitLA County SanitationLA Dept o Power & LightLG&ELockwood GreeneLower Colorado River AuthorityMA Electric CompanyMarlowe ManuacturingMC DeanMJ ElectricMichelinMillikenMirantMonogahela PowerMedical Univ. o SCMustang EngineeringNASANCPPNorthern States Power

Northrop Grumman

P.P.G.PP&LPSE&GPhelps-Dodge CorporationProgress Energy

Redwood City ElectricRexham CorporationRosendinSantee CooperSargent & LundySaudi AramcoSCE & GShaw GroupShellSiemensSNC LavalinSouthern Company ServicesSouthwestern Pub. Svc. Co.Summit ElectricSuncor Millenium

SyncrudeTampa ElectricTechintTechnipTexas Utility ServicesThe Harris GroupTICToyotaToyo TireTransalta EnergyTVATXU EnergyUnion CarbideUnion ElectricURS

Utah Power & LightUtility EngineeringVA Tech HydroValeroVirgin Island Power & LightWE EnergiesWeyerhauserWisconsin Power & LightWorld Waste InternationalWorley ParsonsXeroxZachry Engineering


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Project Profles

Industry: Utility Project Type: FGD Scrubber, Coal

Location: United States MPH Project Value:$2,287,000Work Scope: Power Distribution for Flue Gas Desulphurization Project using over 25 CableBus runs. The main transformers had double windings rated at 7kV & 15kV. MP Husky suppliedtwo 3000A Cable Bus runs from each transformer to the main switchgear house. From there,

we supplied 2000A & 1200A Cable Bus runs out to fve unit switchgear houses. These Cable Bus

runs parallel each other along a pipe bridge and then drop off to each of the unit switchgear

houses. Some of these runs exceed 1,000 feet in length.

Industry: Petrochemical Project Type: Main Power Distribution

Location:Canada MPH Project Value:$634,000

Work Scope: Design of three 15kV Cable Bus runs, two bus runs at 3000A and one bus runat 4000A. These bus runs tie the main transformers to 3 different switchgear houses located at

various points in the plant. Cable Bus lengths were over 1,000 ft. each. Special Requirements:

MP Husky designed a special housing to accommodate the 20ft. spans used on the pipe racks.This design allowed the Cable Bus housing to be installed on the pipe racks at a manufacturing

facility in Edmonton and then shipped to the project site.

Industry: Paper Mill Project Type: Modernization Project

Location:United States MPH Project Value: $397,000

Work Scope: 600V - 4000A and 5kV - 3000A Cable Bus Systems. Connections were trans-former to switchgear leads. Stainless steel Cable Bus housing was used for the bleach plant

and aluminum housing for used for the paper machine area.

Industry: Power Generation Project Type: FGD Scrubber, CoalLocation:United States MPH Project Value:$1,185,000

Work Scope: 8kV - 2500A Cable Bus System for Scrubber application. Total of four bus runsmeasuring over 1,000ft. long each. Connections were form transformer to switchgear.

Industry: Utility Project Type: New Power Generation

Location:China MPH Project Value:$1,137,432

Work Scope: 6x350MW generating units. Cable Bus Systems were furnished for 15kV -2500A and 3000A systems. Generator leads, transformer to switchgear and switchgear tie bus

connections.


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CABLE BUS

Project Profles

Industry: Data Center Project Type: Feeder System

Location:United States MPH Project Value:$2,500,000

Work Scope: Replacement of 44 underground conduit feeder systems with 600V - 3200Aand 600V - 4000A Cable Bus. New Cable Bus feeders connected generators to switchgear andwere routed above ground.

Industry: Cement Plant Project Type: Cogeneration

Location: Nigeria MPH Project Value: $480,000

Work Scope: 15kV - 2700A, 35kV - 1200A and 600V - 6000A Cable Bus Systems for TurbineGenerator leads. Transformer to switchgear connections.

Industry: Food Industry Project Type: Main Feeder


Work Scope: 600V - 4000A Cable Bus System. Utilized a special transmission box designto transition from our Cable Bus to an underground transformer vault, which fed from a pad

mounted transformer. Power was then provided to indoor switchgear.

Industry: Wastewater Project Type: New Plant

Location:United States MPH Project Value: $75,235Work Scope: 2600V / 2400A and 2600V / 1600A systems. Four bus runs with ties fromSwitchgear Tie Cubicle to Switchgear Transition Cubicle. Provided bus housing, cable, vertical

and horizontal elbows, environmental oor seals and terminations.

Industry: Ethanol Project Type: Power Distribution

Location:United States MPH Project Value:$49,411

Work Scope: Four identical bus runs 480V / 3200A. Provided bus housing, cable, verticalelbows, environmental wall seals, termination boxes at transformer ends, box connectors at

switchgear ends, and terminations.


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Project Profles

Industry: Plastics Project Type: Power Distribution

Location: United States MPH Project Value: $181,199

Work Scope: Four bus runs480V / 2000A. Provided bus housing, cable, horizontal andvertical elbows, environmental wall seals (GPO-2 Fiberglass), box connectors and terminations.

Industry: Solar Project Type: Renewable Energy

Location: North America MPH Project Value: $373,350

Work Scope: One of the largest Solar Farms in North America. Special Applications:Approximately one hundred 600V / 1800A short runs used as equipment ties connecting the

inverter to the transformer.

Industry: Utility Project Type: Flue Gas Desulfurization

Location:United States MPH Project Value: $2,600,000

Work Scope: Medium voltage Flue-Gas Desulfurization feeders 15kV2000A, 5kV3000A. Each bus run is over 1,000 feet long feeding loads where the space constraints force the

transformers to be from switchgears. Currently have two projects, with more on the way.

Industry: Petrochemical Project Type: Oil Sands Extraction

Location: Canada MPH Project Value:$5,000,000+Work Scope: Medium voltage co-generation feeders (15kV-5000A), plant wide main me-dium voltage feeders (35kV5kV3000A), and low voltage loads and motor controls (600V).

Special Requirements: Harsh environment (-40C minimum), mildly corrosive particles in air.

Industry: Sports Arena Project Type: Main Feeder


Work Scope: Three 600V4000A cable bus runs to replace bar bus system. Items providedinclude bus housing and cable, horizontal and vertical elbows, environmental seal anges,

termination boxes with environmental seal ange at the indoor switchgear equipment end,terminations and lugs.


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CABLE BUS

Purchasers Drawing RequirementsIn order or MP Husky to proceed with the design o their Cable Bus Systems, the ollowing drawings and inormation

needs to be submitted:

Drawings & Submissions, Special Requirements - Engineer will provide any special client title block data electroni-1.

cally to MP Husky and MP Husky will add to their drawings.

Equipment layouts, plans and elevation, tied to coordinate points, column lines or site survey lines.2.

Certied equipment drawings, showing location o termination points and available termination space, as3.

ollows:

Transormers-Plan and elevation drawings with center lines.

-Location o the bushing and throat ange relative to the transormer base and center lines.

-Transormer height rom the base to top o cover mounted bushing

-Horizontal distance rom transormer center line to bushing center line o cover mounted bushing

-Transormer height rom base to horizontal center line o sidewall mounted bushing

-Horizontal distance rom transormer center line to bushing extension o sidewall mounted bushing-Bushing drilling pattern and hole spacing

Switchgear-Plan and elevation outline drawings with center lines.

-Side section drawings showing cable termination space.

-Location o the bus bars relative to the switchgear base and center lines.

-Bus bar drilling pattern hole spacing.

-Location (e.g. bottom, top or side) and size o the entry opening into the switchgear.

Generators-Plan and elevation outline drawings with generator center line and tap box center line.

-Side section drawings showing cable termination space.

-Location o the bus bars relative to the generator base and center lines.-Bus bar drilling pattern and hole spacing.

-Location (e.g. bottom, top or side) and size o the entry opening in generators termination box.

Buildings-Plan and elevation outline drawings with center lines.

-Outer wall location, construction details, entry locations and re ratings

-Dimensioned plan, elevation and section views showing duct entry locations

-Room elevation above grade

-Equipment layouts reerenced against coordinate points, column lines or site survey grid.

-I Cable Bus entry is rom below, through the building oor, the ollowing issues apply:

-Time rating o re barriers

-Floor construction details-Method or Fire Barrier mounting - directly to the underside o the steel oor or a throat to which a barrier

can be attached

Pipe Racks-Rack positions on the site layout - reerenced to the same grid as the switchgear and transormers.

-Rack construction drawings, plan and elevation with center lines.

-Sections views o the Pipe Racks.


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Typical Specifcation1.0 General

1.1 A complete metal enclosed bus system shall be provided; including all necessary ttings, tap boxes,

enclosure connectors, entrance ttings, insulated conductors, electrical connectors, terminating kits,

and other accessories as required.

1.2 The bus system shall be suitable or indoor or outdoor use with conductor spacing and ventilation

maintained throughout the system.

1.3 All elements o the bus enclosure shall be so designed as to eliminate any sharp edges or projections

that may injure personnel or conductor insulations.

1.4 The bus system shall be Cable Bus, as manuactured by MP Husky.

2.0 Construction2.1 All load carrying members o the bus system shall be abricated rom extrusions o aluminum alloy

6063-T6. The maximum allowable stress used in designed shall be 10,000 PSI.

2.2 Bus enclosure ttings shall have a radius o 24 inches, unless the minimum bending radius o the

conductor requires a larger tting radius.

2.3 The top and bottom enclosure sections shall be corrugated to provide mechanical strength and

slotted or ventilation. The top cover shall be astened to the enclosure with sel tapping screwsspaced approximately 2 eet on centers and shall be removed or inspection. The bottom section

shall be actory installed by welding.

2.4 Splice joints between sections o the bus enclosure shall be the high pressure splined bolted type

o a design which avoids any structural weakness at the connection and does not exceed the

electrical resistance specied under Section 3.4 o this specication.

2.5 Conductor support blocks shall be designed in segments to maintain a minimum o one conductor

diameter in both the horizontal and vertical planes, as required or ree air conductor rating.

Horizontal runs will have blocks spaced every 36 and vertical runs every 18. Conductor support

blocks shall be made o industrial polymer or re-retardant polymer meeting Class A (Type I) when

tested to ASTM E84-09a, NFPA #255 and UL #723.

3.0 Electrical

3.1 All current carrying conductors shall have insulation rated or 90C operating temperature in

accordance with ICEA publication #P-46-426 and interim STD #1 to ICEA publication #S-66-524 or

the ampacity and voltage specied.

3.2 The conductors shall be phased and supported to maintain low impedance and assure the

mechanical strength necessary to prevent cable movement or damage under short circuit currents

up to 100,000 RMS symmetrical amps.

3.3 Conductors shall be o continuous length and be pulled in ater the bus enclosure is in place.

Electrical connectors shall be used only at the termination o conductor runs or, i necessary, at tap

points. All electrical connectors shall be provided by MP Husky.

3.4 The bus enclosure shall have a continuous current rating o not less than 1,000 amperes (50C Rise)

and the resistance across the enclosure section splice shall not exceed 50 microhms.

3.5 The bus enclosure shall be grounded at sufcient intervals or the purpose o preventing a potential

above ground on the bus enclosure in the event o a ault.

3.6 The conductors shall be arranged in a phasing pattern which exhibits minimal inter-phase and intra-

phase imbalance.

3.7 Conductor temperature rise calculations and current balance calculations can be provided in support

o Section 3.6 o this specication.

3.8 All transposing o cables must occur at termination points. Transposing o cables will not be done in

the bus housing.


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CABLE BUS

Quote Form

The ollowing orm can be used to obtain an estimate/quote. Forward to MP Husky, Cable Bus Dept., P.O. Bo

16749, Greenville, SC 29606. Fax (864) 234-4822 or email MP Husky@MP Husky.com.

Project: ___________________________ Bid Due: _________________________Destination: ___________________________ Required Delivery: _________________________

Owner: ___________________________ Engineering Firm: _________________________

What Bus is to be used

or: ___________________________

Type o Quotation: Purchase ____

Budget ____

Who Will Buy: ___________________________ When?: _________________________

Type o Cable Bus: Ampacity ________

Voltage 600V ____ 5kV ____ 8kV ____ 15kV ____ Other ____

Grounded _________ Ungrounded ________

3 Phase, 3 Wire ________ 3 Phase, 4 Wire ________

(with ull neutral)

3 Phase, 4 Wire ________

(with hal neutral)

3 Phase, 4 Wire ________

(with reduced Neutral)

Single Phase A.C. ______ Two Pole D.C. _______

Ambient Temperature:

_______ (i not 40 C)

Conductor Oper. Temp.:

_______ (i not 90 C)

Cable Preerence:

___________________________

i none, MPH will

recommend

Insulation Type: Cross Linked Polyethylene

________

Ethylene-Propylene Rubber

___________

Other

__________

Shielded __________ Unshielded ________ Copper ________

Grounded or Ungrounded

Neutral ________

Jacket Type: PVC ________ CPE ________ CSP ________

Enclosure: Aluminum ________ Steel ________ Stainless Steel ________

Horizontal Footage:

_______________

Vertical Footage:

________

Horizontal Elbow:

90 ________

60 ________

45 ________

30 ________

Vertical Elbow:

90 ________

60 ________

45 ________

30 ________

Wall Seal:

________

Wall Seal (re rated):

________

Box Connector (indoor):

________

Equipment Seal (outdoor):

________

Tap Box:

________

Junction Box:

________

Termination Box:

________

Type o Electrical

Connection Desired:

__________________________________________________

_________________________

_________________

Any Special Requirements:

_________________________

__________________________________________________

_________________________

_________________________


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cable bus brochure 2010

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