vertical lift metal-clad switchgear - vl switchgear.pdf · since 1928 when general electric...

PC 260 – 7/01

VERTICAL LIFTMETAL-CLAD SWITCHGEARwith GE PowerVac VLPower Circuit Breakers

For New Construction and/or Match & LineupIncluding upgrades in MVA & Amperes

1551 Florida Ave., Severn; Maryland, 21144, Phone: 410-551-6500, Fax: 410-551-8451,www.powerconcorp.com

Since 1928 when General Electric introduced its vertical lift metal-clad

switchgear, a steady steam of technological improvements has provided a

consistently high quality, durable, product with superior performance. Many

units over 50 years old are still in service and performing well.

Even today, as aging is taking its toll, Powercon's 33 RR''ss of SSwwiittcchhggeeaarr

EEccoonnoommiiccss -- RReemmaannuuffaaccttuurree -- RReehhaabbiilliittaattee -- RReeppaaiirr -- will add many more

years of dependable service to those rugged structures so long in service.

Powercon has been building new VVeerrttiiccaall LLiifftt MMeettaall--ccllaadd SSwwiittcchhggeeaarr along

with new PPoowweerrVVaacc VL breakers that can mmaattcchh aanndd lliinnee uupp with existing

gear, or new units as a separate line-up, all with interchangeable circuit

breakers. Readily expand present vertical lift line-ups. Add on to either ends;

indoor, outdoor, common aisle or protected aisle.

In addition to improvements over the original products - brought about by

Powercon's 40 years experience with vertical lift switchgear and newer available

technologies, we offer you the opportunity to uuppggrraaddee your existing or new

vertical lift switchgear. This is generally brought about by requirements for

hhiigghheerr ccoonnttiinnuuoouuss ccuurrrreenntt requirements in existing units or hhiigghheerr sshhoorrtt

cciirrccuuiitt requirements that can be introduced into those units.

Existing units that can be upgraded for either higher current or higher MVA or

both are detailed in Table 1 on page 3.

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1551 Florida Ave.; Severn; Maryland; 21144; Phone: 410-551-6500; Fax: 410-551-8451;www.powerconcorp.com

TABLE 1VERTICAL LIFT SWITCHGEAR UPGRADE AVAILABILITY RATINGS

EXISTING CAN BE UPGRRADED TO:MVA AMPERE MVA and/or AMPERES500 1200 750

1000500 2000 750

10002500

750 1200 1000

750 2000 1000 2500

1000 20003000

____ 250040005000*

Note:1. Bus systems must be examined to verify if they should be changed to support ampere

loading.2. Some MVA upgrades may require additional switchgear bracing.

* - Self contained, fan cooled.

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OUTDOOR, METAL-CLAD POWERCON SWITCHGEAR

POWERCON’S VERTICAL LIFTSWITCHGEAR:

Perplexed with the availability of critical parts tomaintain GE magne-blast switchgear? Unable tomaintain asbestos in arc chutes? Concernedabout the reliability of renewal and upgradingoptions being offered by others? Contemplatingtearing out the cubicles and starting anew?Don’t! There is a practical solution.

Powercon is a committed engineering companythat has vast experience enabling cost-effectiveexpansion, upgrading and modernization ofmedium voltage power systems or switchgear.Completely compatible for match and line up withswitchgear using GE vertical lift magne-blastbreakers, Powercon equipment provides a level ofprotection not previously available. Among thebenefits:

v AdaptabilityReadily expand present GE line-ups. Add on toeither end; indoor, outdoor, common aisle,protected aisle.

Unlike some modernization approaches, Powerconswitchgear does not require the expense or floorspace needed for transition compartments. Buspass-throughs and connections are at the samelevel. Just remove the side panels and bolt up.

v Up – To – Date Equipment andTechnology

There are no remanufactured or previously usedbreakers, structures or component partsemployed. Powercon switchgear is all new, andbacked up by new equipment warranties andservice.

v InterchangeableKey parts of Powercon switchgear areinterchangeable with original GE vertical lift line-

ups. For example, GE magne-blast breakers with ML-13 storedenergy mechanisms are directlyinterchangeable – electricallyand mechanically – with modernGE PowerVac VL VacuumCircuit Breakers. As a result, yougain an important safety marginfor system availability andreliability.

v Quality Assurance FromOriginal Designs

Powercon switchgear units arebuilt from available originalengineering documentationwhich have been maintained onvertical-lift installations since theearly 1950’s – added assurancethe new equipment will deliverdurability, reliability andperformance experienced withthe original installation.PowerVac VL breakers arecompletely design tested to ANSIC37.06 and C37.59

v Cycloaliphatic Insulation – Superior toPorcelain

Cycloaliphatic bus supports and/or thru-bushingsare used on all live conductors – main bus, run-backs and PT connections. Cycloaliphatic is thematerial that has proven best for severeenvironments of high humidity, and contaminationsuch as encountered in refineries, paper mills andcoastal locations. Of course Porcelain is stillavailable.

v Vacuum InterruptionFor power switching, the new equipment relies onVacuum Circuit Breakers. Among theiradvantages, the breakers perform numerous full-load switching operations with little deteriorationto interrupting contacts – a major reason forcritical breaker maintenance. On average, thebreaker can be routinely maintained in one-thirdthe time required for magne-blast breakers.

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PROTECTION OPERATOR CAN SEE

When lowering a breaker, the operator has completecontrol. Safety shutters automatically move into placeto cover energized parts.

CURRENT TRANSFORMERS

Readily accessible toroidal CT’s are standard. Bar typeCT’s with additional metering or relaying accuracy can besubstituted up to 1000 amps.

GE POWERVAC VL VACUUM CIRCUIT BREAKERS

Interchangeable with existing breakers, PowerVac VLVacuum Circuit Breakers will meet the same performancerequirements using modern vacuum technology, but withfewer parts and considerable less maintenance. Type ML-18 operating mechanisms are used for all ratings.

INSULATING SYSTEMS

Main bus and other live conductor supports arecycloaliphatic epoxy for an increased creepage path toground, and high resistance to environmentaldeterioration. Insulating boots are provided for inspectionof bus joints.

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Use Powercon Corporation’s Extensive Facilities & Experience in Design & ProductionAnd the Ability to Minimize Operating Uncertainties

Typical 13,200 Volt Switchgear Rehabilitated to Better than New Condition

Process Included:

v Total inspection.

v Replacing main bus and insulation.

v Replacing bus and high voltage switchgearsupports with cycloaliphatic epoxy orporcelain.

v Checking – replacing (where needed) alldevices including relays, instruments,current transformers, potential transformers,circuit breakers, etc.

v Upgrading – including changing currenttransformers, instrumentation, addingautomation and Scada, telemetering andrelaying.

v Replacement of worn or damaged parts.

v Adding new warning signs and labels.

v Adding or deleting circuits and equipment.

v Replacing obsolete GE AM Magne BlastBreakers with GE PowerVac VL Breakers.

Vertical Lift Metal-Clad Switchgear Replacement Parts

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TYPICAL POWERVAC VL15KV CIRCUIT BREAKER(For complete line see rear cover)

POWERVAC VLREPLACEMENTBREAKERS FOR GEMAGNE-BLAST TYPE AM

No kits…no guessing…noused parts. Just the highperformance, reliabil ity andsafety you need and expectfrom the originalmanufacturer.

FEATURES:

v Complete roll- in vacuumbreaker assembly readyfor immediate insertioninto existing equipment– minimize downtime

v All new components –frame, interlockmechanisms, bushingsand secondarydisconnects

v ANSI/IEEE tested –interface/interlocks,dielectric, momentary,temperature rise andmechanical l ife

v Standard productiontesting – 300 mechanicaloperations, highpotential , min./max.control voltage andtiming/travel curves

v Long life with lowmaintenance – provenPower/Vac breaker hasfront accessiblemechanism

v Easy MVA ratingupgrades – mostequipment requires l itt leor no modificationbeyond new interferenceplate

v Direct mechanical andelectrical inter-changeability withexisting units – completedocumentation provided

Note:1. The photos above are typical. E.g. a 1200A 1000MVA breaker can be inserted into a

1200, 500MVA cell with certain cell modifications. Many other combinations are alsoavailable. Consult Powercon Corporation Sales for further information.

2. *Fan Cooled.

1200, 2000 or 2500A – 500 – 750MVA – 1000MVA

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3000, 4000 or 5000A* - 1000MVA

1200, 2000 or 2500A – 500 – 750MVA – 1000MVA

v Extend the useful life of your Magne-Blastequipment.

v Normal wear and aging of contact,mechanisms, insulation and arc chutes canlead to failures.

v Electrical distribution systems may havegrown over the years, leaving equipmentunder-protected.

v Eliminate asbestos arc chutes issues withproven PowerVac vacuum breaker.

v Save up to 50 % on breaker maintenancecosts.

v Avoid costly downtime.

PowerVac VL vacuum replacement breakers are available in the ratings shown below forinsertion into Magne-Blast Type AM breaker compartments:

Symmetrical Rating Basis ANSI C37.06 (Note – 3000A – 4000A – 5000A(FC) Available)

Ratings shown below are based on old breaker ratings. For new rating standards consult factory.Rated Values Related Required Capabilities

Voltage Insulation Level Current Current ValuesRated Withstand Test

VoltageMax.Sym-

metricalInter-

ruptingCapability

3 SecShort-time

CurrentCarryingCapability

K Times Rated Short -Circuit RMS Current

NominalRMS

VoltageClass (kV)

Nominal3-Phase

Class(MVA)

RatedMax.RMS

Voltage(kV)

RatedVoltageRange

Factor K

LowFrequency

RMSVoltage

(kV)

CrestImpulseVoltage

(kV)

ContinuousRMS

CurrentRating at

60 Hz(A)

Shortcircuit RMS

CurrentRating (at

Ratedmax. kV)

(kA)

RatedInter –ruptingTime

(Cycles)

RatedPermissible

TrippingDelay, Y

(Seconds)

RatedMax.RMS

VoltageDivided

by K(kV) (kA) (kA)

Closingand

LatchingCapability

RMSCurrent

(kA)7.2 500 8.25 1.25 36 95 1200 33 5 2 6.6 41 41 667.2 500 8.25 1.25 36 95 2000 33 5 2 6.6 41 41 667.2 500 8.25 1.25 36 95 2500 33 5 2 6.6 41 41 6613.8 500 15 1.30 36 95 1200 18 5 2 11.5 23 23 3713.8 500 15 1.30 36 95 2000 18 5 2 11.5 23 23 3713.8 500 15 1.30 36 95 2500 18 5 2 11.5 23 23 3713.8 750 15 1.30 36 95 1200 28 5 2 11.5 36 36 5813.8 750 15 1.30 36 95 2000 28 5 2 11.5 36 36 5813.8 750 15 1.30 36 95 2500 28 5 2 11.5 36 36 5813.8 1000 15 1.30 36 95 1200 37 5 2 11.5 48 48 7713.8 1000 15 1.30 36 95 2000 37 5 2 11.5 48 48 7713.8 1000 15 1.30 36 95 3000 37 5 2 11.5 48 48 7713.8 1000 15 1.30 36 95 4000 37 5 2 11.5 48 48 7713.8 1000 15 1.30 36 95 5000 37 5 2 11.5 48 48 77

Complete information required for quotation/order entry. Please forward to Powercon’s Sales Team at (410)551-8451 by fax, or call (410) 551-6500, Breaker Sales.

Customer Name LocationType AM Serial No.Mechanism Type Model No.

1200A 2000A 3000A 4000A 5000A

Normal (37kA) (58 kA) momentary for 500MVA applicationsNormal (58 kA) (77 kA) momentary for 750MVA applications

(77 kA) momentary for 1000MVA applications

Trip Voltage: 48Vdc 125Vdc 250Vdc Capacitor TripClose Voltage: 48Vdc 125Vdc 250Vdc 115Vac 230VacCharge Voltage: 48Vdc 125Vdc 250Vdc 115Vac 230Vac

Consult factory for approval to use for back to back capacitor switch and arc furnace applications.

WHY YOU SHOULD UPGRAD YOUR MAGNE-BLAST EQUIPMENT WITH GE POWERVAC VL BREAKERS

1551 Florida Ave.; Severn; Maryland; 21144; Phone: 410-551-6500; Fax: 410-551-8451;www.powerconcorp.com

vertical lift metal-clad switchgear - vl switchgear.pdf · since 1928 when general electric...

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