siemens wl ii 3200

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WL Low Voltage

Metal-Enclosed SwitchgearSelection and Application Guide

www.usa.siemens.com/switchgear

Answers for industry.

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Type WL Low Voltage Metal-Enclosed SwitchgearTable of Contents

General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Construction Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5

WL Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electronic Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7- 9

Time/Current Characteristic Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 12

Breaker Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 21

WL Secondary Terminal Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

WL Communication Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Section Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 - 25

Shipping Weights and Dimensional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 - 30

VT, CPT, CT Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Guide Form Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 - 36

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Type WL Low Voltage Metal-Enclosed SwitchgearGeneral Information

Siemens Type WL low voltagemetal-enclosed switchgear is designed,constructed and tested to providesuperior power distribution, powermonitoring and control. At the heartof the Type WL low voltage switchgearis the World Class Siemens WL breaker.

Siemens Type WL low voltageswitchgear can be utilized in thefollowing applications:

• IndustrialHeavy assemblySemiconductorPetrochemical

AutomotiveBiotechPharmaceutical

• InstitutionalWater treatmentAirportsUniversitiesMedical facilitiesCorrectional facilities

• Critical PowerData ProcessingContinuous industrial processHospitals

• Utility and co-generation

• Commercial

Large office buildingsDistribution centersLarge warehouses

Product Scope:

• Equipment ratings635VAC Maximum3 Phase 3 Wire,3 Phase 4 Wire50/60 Hz6000 amp maximum horizontal bus6000 amp maximum vertical bus

• Enclosure optionsNEMA 1 IndoorNEMA 3R Outdoor Walk-In

NEMA 3R Outdoor Non Walk-in

Siemens WL breakers can be manuallyor electrically operated, fused or unfusedand are available in the following ratingdesignations – N, S, H, L, M and F. Referto tables on Page 13 for interrupt andwithstand ratings for each rating designation.

Industry StandardsType WL switchgear with power circuitbreakers are designed, tested andconstructed in accordance with:

• UL 1558 — Metal-Enclosed LowVoltage Power Circuit BreakerSwitchgear

• ANSI C37.20.1 — Metal-EnclosedLow Voltage Power Circuit BreakerSwitchgear

• ANSI C37.50 — Test Procedure forLow Voltage AC Power CircuitBreakers Used in Enclosures

• ANSI C37.51 — ConformanceTesting of Metal-Enclosed LowVoltage AC Power Circuit BreakerSwitchgear Assemblies

• NEMA SG5 - Power SwitchgearAssemblies

• Applicable requirements of theNational Electric Code (NEC)

WL drawout circuit breakers are inaccordance with:

• UL 1066 — Low Voltage AC andDC Power Circuit Breakers Usedin Enclosures

• ANSI C37.13 — Low Voltage AC PowerCircuit Breakers Used in Enclosures

• ANSI C37.16 — Preferred Ratings,Related Requirements, andApplication for Low Voltage PowerCircuit Breakers and AC PowerCircuit Protectors

• ANSI C37.17 — Trip Devices for ACand General Purpose DC Low-VoltagePower Circuit Breakers

• NEMA SG3 - Low Voltage PowerCircuit Breakers

Features and modifications required byNEC are incorporated when the assemblyis designated as “Service Equipment.”

UL ListingUnderwriters’ Laboratories listing mark(UL) is supplied for each vertical sectionprovided all devices within a verticalsection are UL Listed or UL Recognizedand suitable for the intended use. Allcircuit breaker drawout elements areUL Listed.

Optional CSA compliance with cULlabeling is available.

Arc ResistantOptional Type WL arc resistant low volt-age switchgear is available and is UL

listed to ANSI/IEEE C37.20.7. Type 2Barc resistant accessibility rating withmaximum internal acring short-circuitcurrent rating of 100kA @508V and85kA @ 635V.

Seismic QualificationSeismic qualification to all major seismicconstruction standards (IBC, UBC, CBC,SBC, BOCA and IEEE 693) is available.

Type WL Low Voltage Metal-Enclosed Switchgear

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Breaker Hoist and Track Ventilation and Lifting Structure Quarter Turn Door Latch Secondary Disconnect Access Door

Channel Sill Base (Optional) Breaker Compartment

Auxiliary Instrument Compartment Secondary Disconnect Breaker Cradle (Guide Frame)

Breaker Drawout Rail

TOC Switch Operator

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Type WL Low Voltage Metal-Enclosed SwitchgearConstruction Details

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GeneralThe Siemens Type WL switchgearassembly consists of one or moremetal-enclosed vertical sections. Theend sections are designed to allowinstallation of future sections.

Each vertical section consists of up tofour individually enclosed breaker orauxiliary compartments which are sizedto provide uniform height.

Included in each assembly are variouscomponents such as circuit breakers,instrumentation and control equipment,transformers, relays, three-phase buswork, and all internal wiring, connectors,and other supporting equipment.

In accordance with ANSI C37.20.1, themaximum temperature for parts thatare handled is 50°C. The main busmaximum temperature rise is 65°Cabove 40°C ambient. The temperaturerise of the air surrounding the cableconnection points is limited to 45°Cabove 40°C ambient.

FinishDuring construction, the structural steelparts, panels, and compartments are all

prepared for painting by a five-stagewash system.

Standard finish color is light gray ANSI61. The standard painting process is aUL approved electrostatic powder coatpaint system utilizing a polyester pow-der coat paint. The completed finish hasa nominal 2 mils dry film thickness.

Assembly Construction Siemens Type WL metal-enclosed lowvoltage switchgear is constructed ofa rigid internal frame structure thatminimizes the possibility of damageduring shipment and supports multipleinstallation methods – rolling or lifting.Lifting eyes are integrated into theinternal frame design and ensurethe structural integrity of the liftingassembly is always adequate for theweight of the total structure.

If requested in advance, the switchgearstructure can be shipped so that theunit can be tilted onto its back duringinstallation. This is an option that mustbe specified at order entry.

Each complete vertical section containsthree compartments.(1) Front compartment containing

breakers and/or auxiliary equipment(2) Bus compartment containing

horizontal and vertical bus(3) Rear cable compartment containing

the load side runbacks connectingthe load side of the breaker to theload cable terminals

Within the front compartment, eachbreaker is barriered and compartmentedfrom all other breakers in the frontcompartment. This design also isolatesthe breakers in the front compartmentfrom the bus compartment.

Optional barriers can be supplied toisolate the bus compartment from therear cable compartment. Other optionalbarriers include: (1) Full depth sectionbarriers to isolate one section from theadjacent section(s). (2) Barriers to isolatethe incoming line side connections to themain breaker(s) from the load side busand connections in the switchgear section.(Line/load barriers are provided as astandard feature for service equipmentmain breakers.)

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Main and Ground BusThe standard main bus is silver-platedcopper. Tin-plated copper bus isoptionally available. Vertical andhorizontal bus bar utilize a channelshape design to maximize short circuitwithstand capability and minimize heatrise. All bus joints include Grade 5 boltsand conical spring washers. Provisionsfor future extension of the main businclude plated joints and high tensilestrength steel hardware.

The main three-phase horizontal busis arranged vertically one phase abovethe other with edge-to-edge alignmentto provide high, short circuit strength.Insulated main bus with isolated verticalbus is optional.

Vertical bus ratings available are 1600,2000, 3200, 4000, 5000 and 6000amperes continuous current. Horizontalbus ratings available are 1600, 2000,3200, 4000, 5000 and 6000 amperes.A neutral bus is furnished whenspecified, and can be rated 1600,2000, 3200, 4000, 5000 or 6000amperes continuous current.

A 1/4” X 3” standard copper ground bus

extends through all sections. Cable lugsare mounted to the ground bus ineach section.

Standard short-circuit withstand (4 cycle)and short-time withstand (60 cycle) busbracing is 100,000 amperes. Higher short-circuit withstand bus bracings (150kA and200kA) are available.

Load side runbacks for feeder circuitsare copper construction, are insulatedwith sleeve tubing in the main bus area,and are supported by high-strengthbus bracing.

Control and Communication WiringStandard control and communicationwiring is #14 AWG extra-flexible, strandedcopper type SIS. Control andcommunication wiring is installed andaccessed from the front of the switchgearstructure. Each breaker compartment hasa dedicated horizontal and vertical wireway.

For devices not having screw-typeterminals, pressure terminals are used.

InsulationThe insulation used is a UL recognizedthermoset material that has excellent heatresistance, flame retardance, dimensionalstability and low moisture absorption.

Circuit Breaker CompartmentsTypical circuit breaker compartmentsinclude primary disconnects, drawoutrails, secondary disconnects, verticalwireway, horizontal wireway and,if applicable, TOC switch operator,MOC switch operator and associatedinterlocks. Draw-out rails allow thebreaker to be withdrawn from thecompartment without additionalextensions or adapters. Up to six (2sets of three) current transformers formetering or relaying can be mountedin each compartment.

A variety of auxiliary devices such asbreaker control switches, indicatinglights and pushbuttons can be mountedon the breaker compartment door.

TOC Switch Operator Breaker Compartment Rear Barrier Secondary Disconnect Vertical Wireway

Interference Interlock Drawout Rails Primary Disconnect Cradle Mounted Current

Transformer

Circuit Breaker Cell Interior

4321

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Rear View

Side View

Options

Switchgear Mounted HoistThe integrally mounted hoist, standardon walk-in outdoor and optional onindoor switchgear enclosures, travelsalong rails on top of the switchgear toassist in breaker handling.

TOC and MOC SwitchesThe Truck Operated Cell (TOC) Switchprovides interlocking control or remoteindication of the breaker racking position.The cubicle mounted auxiliary switch orMechanism Operated Cell (MOC) switchprovides interlocking control or remote

indication based on the main contactposition (open or closed).

ShuttersThese provide protection against accidentalcontact with primary disconnects in acompartment when the breaker isremoved. Shutters automatically closewhen the breaker is withdrawn and arepad-lockable and field installable.

Key InterlockThis provides a mechanical means foroperating circuit breakers and otherdevices only when predescribed

conditions are met.

Test SetA portable breaker test set is available asan option and supports testing the fullrange of functions and protective settingssupplied with the breaker trip unit.

Metering and Auxiliary CompartmentsCompartments are available to housedevices such as voltage transformers,metering, control power transformers,and supervisory devices.

Instrument and Control TransformersVoltage transformers and control powertransformers are mounted in auxiliarycompartments. These transformersare protected by primary pull-out typecurrent-limiting fuses and secondaryfuses. Current transformers are normallymounted on the compartment primarydisconnect studs where they are read-ily accessible. See Tables on Page 31 foravailable ratings.

Miscellaneous•

Each switchgear lineup includes abreaker lifting device that is adjustablefor use with Size II and Size III breakers.

• An optional portable breaker hoist isavailable if the integrated breakerhoist and track is not specified.

• A test cabinet is also available as anoption. The test cabinet is wall mounted necessary equipment for testingelectrically-operated breakers thathave been removed from the breakercompartment. The test cabinet doesn’tinclude or replace a breaker tripunit tester.

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A WL remote breaker racking device(RBRD) is available as an optionalaccessory that allows maintenancepersonnel to safely rack Siemens TypeWL breakers into the Connect, Testand Disconnect positions from up to30 feet away from the breaker. Thisallows the operator to be outside thearc flash hazard boundary and therebyproviding additional personnel protection.

• 4” high formed steel channel sillsare available for indoor switchgearenclosures.

Outdoor Switchgear

Type WL switchgear is available in twooutdoor (NEMA 3R) enclosures. Walk-inand non walk-in versions are availableto meet your particular application.

For protection from snow, rain and otherforeign matter, both outdoor enclosuresrest on a six-inch high, formed steel basewhich provides rigid support and a tightbottom seal. A heavy duty protectiveunder-coating is applied to the undersideof all outdoor enclosures to protectagainst moisture and corrosion. Shieldedventilation housings permit proper aircirculation while excluding dirt and

foreign matter.

In the walk-in outdoor enclosure a lighted, unobstructed service aisle is provided atthe front of the switchgear allowinginspection and maintenance withoutexposure to the elements. An access doorequipped with an emergency bar releaseis located at each end of the aisle.

The following features are standardwith walk-in outdoor enclosures.(1) Space heaters in breaker

compartment and bus compartment.

(2) Screens and filters for exterior doorventilation louvers.(3) Incandescent lighting receptacle

with three-way switch at each aisleaccess door.

(4) Duplex receptacle with ground faultprotection at each aisle access door.

(5) Load center for power distributionto lights, receptacles, switchesand heaters.

For non walk-in outdoor enclosures,space heaters and screens/filters forventilation louvering are standard withlighting, receptacles, switches and loadcenters offered as options.


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WL Circuit Breaker:Superior individual products for low-voltage power distribution systems

10 Auxiliary Switch Block 11 Door Sealing Frame 12 Interlocking Set Base Plate 13 Protective Cover for OPEN/CLOSE Buttons 14 Multiple Key Locking Accessories15 Single Bolt Motor Operator

Installation 16 Operations Counter17 Breaker Status Sensor (BSS)

18 Complete Trip Unit Family19 Remote Reset20 Breaker Data Adapter (BDA)

for Internet Connection21 Multi Angle LCD Module22 Ground Fault Protection Module23 Rating Plug24 Metering Function (+ wave forms

and harmonics)25 Circuit Breaker

1 Guide Frame2 Vertical to Horizontal BUS Connector3 Position Signaling Switch (TOC)

4 Breaker / Guide Frame Grounding Contact 5 Shutter (locking) 6 MODBUS or PROFIBUS Communications

7 External CubicleBUS I/O Module

8 Plug-In Open and Closed Solenoids9 Multiple Secondary Connections

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Type WL Low Voltage Metal-Enclosed SwitchgearWL Circuit Breaker

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Type WL Low Voltage Metal-Enclosed SwitchgearElectronic Trip Unit

Electronic Trip UnitDuring development of our electronictrip units we have consistently strivento ensure modularity. The followingare just some of the modules that aresimple to retrofit at any time:

• Ground fault protection

• Communication

• Metering function

• Displays

• Rating plugs

This enables fast local adaptation tonew system conditions. At the sametime, the ETUs are provided with new,innovative functions, and all tripunits are completely interchangeableindependent of breaker ratings.

Rating PlugThe Rating Plug is a replaceablemodule that enables users to reducethe rated device current for optimumadaptation to the system; e.g. duringstartup of a plant section. The RatingPlug should be selected so that itcorresponds to the rated current ofthe system.

Switch-selectable I2t or I4tCharacteristic Curve ImprovedOverload ProtectionThe best possible protection is assuredwhen all protective devices in thesystem are optimally coordinated.To achieve optimum selectivity andcoordination, the long-time characteristiccan be switched between l2t and l4t.

Switchable Parameter SetsTo allow the protection to adapt tochanges in system needs such asswitching between utility and genera-tor feeds, WL Circuit Breakers supportETUs with two independent parameter

sets. Switching between the parametersets occurs in less than 100 ms and canbe done remotely or via a contact inputto an optional CubicleBUS module.

Extended Instantaneous ProtectionThe electronic trip units designedfor use with the WL circuit breakerprovide a feature we call “ExtendedInstantaneous Protection”(Patent Pending).

It allows the WL breaker, as a family,across the entire range of ampacitiesto be applied at the withstandrating of the breaker with minus 0%tolerance; that means no instantaneousoverride. EIP further enables the circuitbreaker to be applied up to the fullinterrupting rating of the breaker onsystems where the available faultcurrent exceeds the withstand rating,even with LS-only trip units. Why isthis feature important? The answeris reliable power.

The coordination of the main breakerand the first level of feeder breakers

is especially important because of thewide spread outage that will occur ifone of these breakers trips unnecessarily.

Conventional practice is to specifyelectronic trip beakers with “LS” typetrip units in critical power systems.These ‘Long-Time’ and ‘Short-Time’only trip units forgo the fast trippingtimes given by an ‘Instantaneous’ func-tion. The justification for this delay isthe benefit of allowing a downstreambreaker to open first to clear a highmagnitude fault. The main or feederstays closed to keep the remainder of

the loads operating.

However, a circuit breaker with anLS-only trip unit may never be appliedon a system capable of delivering faultcurrent higher than the breaker’s with-stand rating, commonly 85kA or less.Where the available fault current isabove this level, a breaker withan additional function must beused — an instantaneous override.This instantaneous override functiontrips the breaker instantly whenthe fault current reaches apre-determined level below the

withstand rating, usually around20% lower. The benefit of thisoverride is to allow application ofthe breaker up to the interruptingrating, which may be as high as150kA. The disadvantage is thatit compromises the coordinationbenefit because the main willprobably trip at the same time asa downstream branch breaker inthat 20% lower override window.

This is where the ExtendedInstantaneous Protection featureof the WL can offer the next levelof coordination and protectionfunctionality. Unlike an instantaneousoverride, Extended InstantaneousProtection (EIP) allows the fullwithstand rating — in fact up to thetolerance of plus 20% higher. Ofcourse, EIP still provides the abilityof the breaker to be applied at theinterrupting level, as high as 150kAin a Frame Size III, non-fused breaker.This unique combination enablesthe system designer to achieve thehighest possible level of coordination

in the industry and also allowsapplication of the WL on modernpower systems with extremely highlevels of available fault current.

A further benefit offered by EIP, overa standard LS trip unit equippedbreaker, is that it provides an extrameasure of protection in the eventthat the available fault currentincreases at some time during the lifeof the system beyond the withstandlevel. This would typically be due toa utility transformer change butcould also be due to the addition

of generators or large motors thatcontribute fault current. EIP providesthe breaker the ability to react in aninstantaneous fashion to a high levelfault instead of having to rely onthe slower reaction time of theshort-time function.

Sample Configuration of an ETU745

Micro switchesfor switchselectablecharacteristiccurve adjustments

Rating Plug

LCD display withadjustable-angleviewing

Ground FaultProtectionModule(field installable)

Manual Trip Indicator withoptional remote RESET

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Selection Criteria for WL Circuit Breakers

The basic criteria for selecting circuitbreakers is:Maximum Available Short Circuitat the installation point. This valuedetermines the short circuit currentinterrupting rating or short circuit currentwithstand rating of the circuit breaker.

Rated Current In which is to flowthrough the respective circuit breakercontinuously. This value may notbe greater than the maximum ratedcurrent of the circuit breaker. Therated current for the WL is determinedby the rating plug, up to the maximumframe rating.

Ambient Temperature of thecircuit breaker.

Design of the circuit breaker.

Protective Functions of the circuitbreaker.These are determined by theselection of the appropriate trip unit.

Dynamic Arc-Flash Sentry (PatentPending) A unique feature of the WLtrip unit allows the system designer toachieve lower levels of arc flash energyand delayed tripping for selective tripcoordination purposes.

Dynamic Arc-Flash Sentry (DAS) employsthe unique dual protective settingcapability of the 776 trip units, coupledwith the ability to easily toggle to a lowerarc flash parameter set. A normal opera-tion parameter set can be optimized forselective trip coordination, while thesecond set is optimized for lower arcflash energy levels. The dynamic actioncomes from the ability to switch fromthe normal operation set to the arc flashlimiting set based on the presence ofpersonnel as they approach the flashprotection boundary. A wide variety ofswitching methods may used based onthe needs of a particular facility. Thecapabilities range from fully automaticswitching using appropriate occupancysensors to manual switching via akey operation.


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Basic Protective Functions ETU745 ETU748 ETU776

Long-time overcurrent protection L

Short-time delayed overcurrent protection S

Instantaneous overcurrent protection I --

Neutral protection N

Ground fault protection G

Additional Functions

Selectable neutral protection

Defeatable short-time delay

Defeatable instantaneous protection --

Selectable thermal memory

Zone selective interlocking

Selectable I2t or fixed short-time delay

Adjustable instantaneous pick-up --

Selectable I2t or I4t long-time delay

Adjustable short-time delay and pick-up

Selectable and adjustable neutral protection

Dual protective setting capability -- --

Extended instantaneous protection

Parameterization and Displays

Parameterization by rotary switches (10 steps) --

Parameterization by communication (absolute values)

Parameterization by menu/keypad (absolute values) -- --

Remote parameterization of the basic functions --

Remote parameterization of the additional functions -- --

Alphanumeric LCD --

Graphical LCD -- --

Metering Function

Metering function Plus

Communication

CubicleBUS

Communication via PROFIBUS-DP

Communication via the MODBUS

Communication via the Ethernet (BDA)

standard -- not available optional


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Tripping Characteristics

ETU745

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Type WL Low Voltage Metal-Enclosed SwitchgearTime/Current Characteristic Curves

Tripping CharacteristicsEvery trip unit and every trip function hasits own characteristic. You will find just asmall section of these illustrated below.The characteristics show the respectivegreatest and smallest setting range ofWL Circuit Breakers.

To obtain a complete release characteristic,the appropriate characteristic functionsmust be determined.

The characteristics show the behavior ofthe overcurrent release when it is activated

by a current already flowing beforetripping. If the overcurrent trip takes placeimmediately after closing and the overcur-rent release is therefore not yet activated,the opening time is prolonged by about3 to 10 ms, depending on the value ofthe overcurrent.

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Type WL Low Voltage Metal-Enclosed SwitchgearTime/ Current Characteristic Curves


ETU748

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ETU776

Ground Fault Curve for ETU745, 748, and 776

Type WL Low Voltage Metal-Enclosed SwitchgearTime/Current Characteristic Curves

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Type WL Low Voltage Metal-Enclosed SwitchgearBreaker Technical Data

1 Maximum rated voltage for fused breakers is 600VAC.2 Maintenance means: replacing main contacts and arc chutes (see operating instructions).3 Short-time withstand rating is 85kA RMS at 635VAC.

WL Circuit Breakers ANSI / UL 1066

Breaker Ratings

Frame Size II

Frame Rating 800 1600 2000 3200Rating Class N S H L F N S H L F S H L F S H LInstantaneous Short-circuit Current1 254VAC 50 65 85 100 200 50 65 85 100 200 65 85 100 200 65 85 100

(kA RMS) 50/60 Hz 508VAC 50 65 85 100 200 50 65 85 100 200 65 85 100 200 65 85 100

635VAC 50 65 65 85 200 50 65 65 85 200 65 65 85 200 65 65 85

Short-time Withstand

Current Icw

(kA RMS) 50/60 Hz 0.5s 50 65 65 85 — 50 65 65 85 — 65 65 85 — 65 65 85

Extended Instantaneous

Protection

(kA RMS -0% to +20%) 50 65 65 85 — 50 65 65 85 — 65 65 85 — 65 65 85

Close and Latch Ratings

(kA RMS) 50/60 Hz 50 65 65 85 65 50 65 65 85 65 65 65 85 65 65 65 85

Rating Plug Range

Endurance Rating

(switching operations Mechanical 15,000 15,000 15,000 15,000

with maintenance) 2 Electrical 15,000 15,000 15,000 15,000

200, 225, 250, 300, 315, 350,400, 450, 500, 600, 630, 700,800 amps

200, 225, 250, 300, 315, 350,400, 450, 500, 600, 630, 700,800, 1000, 1200, 1250,1600 amps

200, 225, 250, 300, 315,350, 400, 450, 500, 600,630, 700, 800, 1000,1200, 1250, 1600,2000 amps

200, 225, 250,300, 315, 350,400, 450, 500,600, 630, 700,800, 1000, 1200,1250, 1600, 2000,2500, 3000,3200 amps

Frame Size III

Frame Rating 2000 4000 5000 6000

Rating Class M F H L M F H L M F H L M

Instantaneous Short-circuit

Current1

(kA RMS) 50/60 Hz

254V AC

508V AC

635V AC

15015085

200200200

858585

10010085

15015085

200200200

858585

10010085

15015085

200200200

858585

10010085

15015085


Current Icw

(kA RMS) 50/60 Hz 0.5 s 1002 – 85 1003 100 2 – 85 100 100 3 – 85 100 100 3

Extended Instantaneous

Protection

(kA RMS -0% to +20%)

254V AC

508V AC

635V AC

150

85 – 85 10015085 – 85 100

15085 – 85 100

15085

Close and Latch Ratings

(kA RMS) 50/60 Hz 1002 85 85 85 100 2 85 85 85 100 2 85 85 85 100 2

Rating Plug Range 800. 1000. 1200.1250, 1600, 2000,2500, 3000, 3200amps

800, 1000, 1200, 1250,1600, 2000, 2500, 3000,3200, 4000 amps

800,1000, 1200, 1250,1600, 2000 2500, 3000,3200, 4000, 5000 amps

800,1000, 1200, 1250,1600, 2000 2500, 3000,3200, 4000, 5000, 6000amps

Endurance Rating

(switching operations

with maintenance)2Mechanical

Electrical10,00010,000

10,000

10,000

10,000

10,00010,00010,000

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WL Non-Automatic Switches ANSI / UL 1066

Ratings

1 Interrupting rating is equal to 200kA based on the rating of the fuse.2 Consult factory for fuse carriage power loss.3 ETU with external control power.4 ETU without external control power.


Frame Size II Frame Size III

Frame Rating 800 1600 2000 3200 3200 4000 5000 6000

Rating Class L F 1 L F 1 L F 1 L F 1 L F 1 L F 1 L


Current

(kA RMS) 50/60 Hz 0.5 s 85 20 85 20 85 20 85 40 100 40 100 40 100

Breaking Capacity with

External Relay (kA RMS)

635Vac , 50/60 Hz,

max time delay 0.5 s 85 20 85 20 85 20 85 40 100 40 100 40 100

WL Circuit Breakers

Frame Rating


800 1600 2000 3200 3200 4000 5000 6000

Rated current In

at 40°C, at 50/60Hz A 800 1600 2000 3200 3200 4000 5000 6000

Rated operational

(nominal) voltage VAC 600 600 600 600 600 600 600 600

Rated maximum voltage VAC 635 635 635 635 635 635 635 635

Permissible ambient

temperature

operation

(for operation with

LCD max. 55°C) °C -25 / +70 -25 / +70 -25 / +70 -25 / +70 -25 / +70 -25 / +70 -25 / +70 -25 / +70

Storage

(observe special

conditions for LCD) °C -40 / +70 -40 / +70 -40 / +70 -40 / +70 -40 / +70 -40 / +70 -40 / +70 -40 / +70

Power loss at Rated Current

with 3-phase 2

symmetrical load W

85130

(fused)

320520

(fused)

500850

(fused) 1150 700 1100 1650 2475

Operating times

Make-time ms 35 35 35 35 35 35 35 35

Break-time (with active ETU)3 ms 34 34 34 34 34 34 34 34

Break-time

(without active ETU)4 ms 50 50 50 50 50 50 50 50

Total clearing time

(with active ETU)3 ms 50 50 50 50 50 50 50 50

Total clearing time

(without active ETU)4 ms 65 65 65 65 65 65 65 65

Make-time, electrical

(via closing solenoid) ms 50 50 50 50 50 50 50 50

Break-time, electrical

(via shunt trip) ms 40 40 40 40 40 40 40 40

(via instantaneous UVR) ms 73 73 73 73 73 73 73 73

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WL Circuit Breakers

1 Maintenance consists of replacing main contacts and arc chutes (see operating instructions.)2

For use only with Siemens supplied ring terminals (WL10RL).3 Fused Breaker Weights (kg/lb) Frame Size II (fused) Frame Size III (fused)

Breaker 103/227 same as table above

Guide Frame 68/150 130/275

Fuse Carriage – 102/225



Frame Rating 800 1600 2000 3200 3200 4000 5000 6000

Endurance

Mechanical

(without maintenance)

operating

cycles 12,500 12,500 10,000 10,000 5,000 5,000 5,000 5,000

Mechanical

(with maintenance)1operating

cycles 15,000 15,000 15,000 15,000 10,000 10,000 10,000 10,000

Electrical

(without maintenance)

operating

cycles 7,500 7,500 4,000 4,000 2,000 2,000 2,000 2,000

Electrical

(with maintenance)1operating

cycles 15,000 15,000 15,000 15,000 10,000 10,000 10,000 10,000

Switching frequency 1/h 60 60 60 60 60 60 60 60

Minimum interval

between breaker trip and

next closing of the

circuit breaker (when

used with the automatic

mechanical reset of the

bell alarm) ms 80 80 80 80 80 80 80 80

Mounting position

Auxiliary secondary wire

size (Cu) max # of aux.

connecting leads x cross

section (solid or stranded)

Bare

wire

pressure

terminal

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

1 x AWG 14

or

2 x AWG 16

Tension

spring

terminal 2 x AWG 14 2 x AWG 14 2 x AWG 14 2 x AWG 14 2 x AWG 14 2 x AWG 14 2 x AWG 14 2 x AWG 14

Ring tongue

terminal

(standard)

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

2 x AWG 14

1 x AWG 10 2

2 x AWG 16

TOC wire connection size

(Cu) max # of aux.



Bare

wire

pressure


Weight 3

Circuit Breaker

Guide Frame

kg/lb

kg/lb

72/159

51/112

72/159

51/112

75/165

60/132

95/209

69/152

155/341

139/306

155/341

139/306

155/341

139/306

155/341

139/306

MOC wire connection

size (Cu) max # of aux.



Bare

wire

pressure


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16

WL Circuit Breaker Accessory Ratings

Manual Operating Mechanism with Mechanical ClosingClosing/charging stored energy mechanism

Maximum actuating force required on hand lever 52 lbs

Number of hand lever strokes required 9

Manual Operating Mechanism with Mechanical and Electrical Closing

Charging stored-energy mechanism

Closing solenoid Coil voltage tolerance 24V DC 14 - 28V DC

and Shunt Trip 48V DC 28 - 56V DC

120V AC / 125V DC 70 - 140V DC

104 - 127V AC

240V AC / 250V DC 140 - 280V DC

08 - 254V AC

180Y / 104V AC

220Y / 127V AC

Power consumption (5 % duty cycle) 120 W

Minimum closing solenoid actuation signal required 50 ms

Motor Operating Mechanism with Mechanical and Electrical ClosingSpring charging motor

Motor voltage tolerance at 120V AC, 240V AC 85 - 110%

Extended tolerance for battery operation at 24V DC, 48V DC, 125V DC, 250V DC 70 - 126%

Power consumption of the motor 110 W

Time required for charging the stored-energy mechanism ≤ 10 s

Closing solenoid

For motor and closing solenoid

short-circuit protection

Short-circuit protection

Standard slow-blow cartridge fuse 24 - 60 V 6A

110 - 250 V 3A

Auxiliary ReleaseUndervoltage release Operating values ≥ 85% (circuit breaker can be closed)

(UVR) 35 - 70% (circuit breaker opens)

AC Coil voltage tolerance at 120V AC, 240V AC 85 - 110%

DC Extended tolerance for battery operation at 24V DC, 48V DC, 125V DC, 250V DC 85 - 126%

Rated control supply voltage AC 50/60Hz V 120, 240

DC V 24, 48, 125, 250

Power consumption (inrush / continuous) AC VA 200 / 5

DC W 200 / 5

Opening time of the circuit breaker for AC / DC ms 200

UVR (no time delay), 2 settings

Setting 1 ms 80

Setting 2 ms 200

UVR (with time delay)

Adjustable delay s 0.2 to 3.2

Reset by additional NC direct opening ms ≤ 100


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17

WL Circuit Breaker Accessory Ratings

Auxiliary Contacts and Mechanism Operated Contacts (MOC)

Contact rating Alternating current

50/60 Hz Rated operational voltage 240V

Rated operational current, continuous 10A

Rated operational current, making 30A

Rated operational current, breaking 3A

Direct current Rated operational voltage 24V, 125V, 250V


Rated operational current, making 1.1A at 24V, 1.1A at 125V, 0.55A at 250V

Rated operational current, breaking 1.1A at 24V, 1.1A at 125V, 0.55A at 250V

Bell Alarm Switch and Ready-to-Close Signal Contact


50/60 Hz Rated operational voltage 240V

Rated operational current, continuous 5A Rated operational current, making 8A


Direct current Rated operational voltage 24V, 48V, 125V 250V DC

Rated operational current, continuous 0.4A 0.2A

Rated operational current, making 0.4A 0.2A

Rated operational current, breaking 0.4A 0.2A

Shunt Trip, UVR and Blown Fuse Signaling Contacts


50/60 Hz Rated operational voltage 127V, 240V


Rated operational current, making 5A


Direct current Rated operational voltage 24V, 48V, 125V 125V DC (IEC Rating Only)

Rated operational current, making 1.0A 0.5A

Rated operational current, breaking 1.0A 0.5APosition Signal Contact on the Guide Frame (TOC)

Breaker position: Connected position 3 form C 1 form C 6 form C

Test position 2 form C or 1 form C or 0 form C

Disconnected position 1 form C 1 form C 0 form C


50/60 Hz Rated operational voltage 120V 240V

Rated operational current, continuous 10A 10A

Rated operational current, making 6A 3A

Rated operational current, breaking 6A 3A

Direct current Rated operational voltage 24V 48V, 125V 250V

Rated operational current, continuous 6A 1A 1A

Rated operational current, making 6A 0.22A 0.11A

Rated operational current, breaking 6A 0.22A 0.11A


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18

Function Overview of the Electronic Trip Units

Basic Functions ETU745

Long-time overcurrent protection

Function can be switched ON/OFF –

Setting range IR = In x … 0.4, 0.45, 0.5, 0.55,0.6,

0.65, 0.7, 0.8, 0.9, 1

Switch-selectable overload protection

(I2t or I4t dependent function)

Setting range of time delay class tR at I2t

(seconds) 2, 3.5, 5.5, 8, 10,

14, 17, 21, 25, 30

Setting range of time delay tR at I4t

(seconds) 1, 2, 3, 4, 5

Thermal memory (via slide switch)

Phase loss sensitivity at tsd=20ms (M)

Neutral protection

Function can be switched ON/OFF (via slide switch)

N-conductor setting range IN = In x … 0.5 … 1

Short-time delayed overcurrent protection

Function can be switched ON/OFF (via rotary switch)

Setting range Isd = In x … 1.25, 1.5, 2, 2.5,

3, 4, 6, 8, 10, 12

Setting range of time delay tsd, fixed

(seconds) 0.02 (M), 0.1, 0.2,

0.3, 0.4, OFF

Switch-selectable short-time delay


(I 2t dependent function) (via rotary switch)

Setting range of time delay tsd at I 2t(seconds) 0.1, 0.2, 0.3, 0.4

Zone Selective Interlocking (ZSI) function per CubicleBUS module

Instantaneous overcurrent protection

Function can be switched on/off,

Extended Instantaneous Protection

is enabled when OFF (via rotary switch)

Setting range Ii = In x … 1.5, 2.2, 3, 4, 6, 8, 10, 12

0.8 x Icw = max, OFF=Icw=EIP 1

Ground fault protection 2 ¶ (field installable module)

Trip and alarm function

Detection of the ground fault current

by residual summing method


by direct summing method

Setting range of the Ig for trip A, B, C, D, E Setting range of the Ig for alarm A, B, C, D, E

Setting range of the time delay

(seconds) 0.1, 0.2, 0.3, 0.4, 0.5

Switch-selectable

ground fault protection

(I 2t / fixed)

Setting range time delay tg at I2t 0.1, 0.2, 0.3, 0.4, 0.5

ZSI ground function per CubicleBUS module

available

– not available

optional

L

N

S

I

G

1 Extended Instantaneous Protection (EIP) allows the WL breaker to be applied at the withstand rating of the breakerwith minus 0% tolerance; that means no instantaneous override whatsoever. EIP further enables the circuit breakertobe applied up to the full instantaneous rating of the breaker on systems where the available fault current exceedsthe withstand rating.

2 Ground Fault Module cannot be removed after installation.

In


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Basic Functions ETU745

Parameter sets

Selectable between

parameter set A and B –

LCD

LCD, alphanumeric (4-line)

LCD, graphic –

Communication

CubicleBUS integrated

Communication capability via

MODBUS or PROFIBUS

Metering function

Metering function capability with

Metering Function PLUS

Display by LED

Trip unit active

Alarm

ETU error

L trip

S trip

I trip

N trip

G trip (only with ground fault module)

G alarm (only with ground fault module)

Tripped by extended protection or

protective relay function

Communication

Signal contacts with external CubicleBUS modules

(Opto or relay)

Overcurrent warning

Load shedding OFF/ON

Early signal of long time trip (200ms)

Temperature alarm

Phase unbalance

Instantaneous trip

Short-time trip

Long-time trip

Neutral conductor trip

Ground fault protection trip (only with ground fault module)

Ground fault alarm (only with ground fault module)

Auxiliary relay

ETU error

available

– not available

optional

from … to step from … to step

0 … 1 0.1 1000 … 1600 50

1 … 100 1 1600 … 10000 100

100 … 500 5 10000 … max 1000

500 … 1000 10

Step for Settings via Communications or ETU Key Pad Setting range of the Ig


A 100 A 400 A

B 300 A 600 A

C 600 A 800 A

D 900 A 1000 A

E 1200 A 1200 A


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Basic Functions ETU748 ETU776

Long-time overcurrent protection

Function can be switched ON/OFF – –

Setting range IR = In x … 0.4, 0.45, 0.5, 0.55, 0.4 … 1 (step: 1A)

0.6, 0.65, 0.7, 0.8,

0.9, 1

Switch-selectable overload protection

(I 2t or I 4t dependent function)

Setting range of time delay class t}R at I2t

(seconds) 2, 3.5, 5.5, 8, 10, 2 … 30 (step: 0.1s)

14, 17, 21, 25, 30

Setting range of time delay tR at I4t

(seconds) 1, 2, 3, 4, 5 1 … 5 (step: 0.1s)

Thermal memory (via slide switch) (on/off via key pador communications)

Phase loss sensitivity at tsd=20ms (M) (on/off via key pador communications)

Neutral protection –

Function can be switched ON/OFF – (via slide switch)

N-conductor setting range IN = In x … – 0.5 … 1

Short-time delayed overcurrent protection

Function can be switched ON/OFF (via rotary switch) (via key pad or communications)

Setting range Isd = In x … 1.25, 1.5, 2, 2.5, 1.25 … 0.8 x Icw = max

3, 4, 6, 8, 10, 12 (step: 10A)

Setting range of time delay tsd, fixed

(seconds) M, 0.1, 0.2, 0.3, 0.4 M, 0.08 … 0.4, OFF (step: 0.001s)

Switch-selectable short -time delay


(I 2t dependent function) (via rotary switch) (via key pad or communications)

Setting range of time delay tsd at I2t

(seconds) 0.1, 0.2, 0.3, 0.4 0.1 … 0.4 (step: 0.001s)

Zone Selective Interlocking (ZSI) function per CubicleBUS module per CubicleBUS module

Instantaneous overcurrent protection

Function can be switched ON/OFF,

Extended Instantaneous Protection

is enabled when OFF – (via key pad or communications)

Setting range Ii = In x … – Ii = Icw = EIP 1 1.5 x In … 0.8 x Ics = max, OFF=Icw=EIP 1

Ground fault protection 2 (field installable module) (field installable module)

Trip and alarm function (via key pad or communications)


by residual summing method


by direct summing method

Setting range of the Ig

for trip A, B, C, D, E A … E (step: 1A)

Setting range of the Ig for alarm A, B, C, D, E A … E (step: 1A)

Setting range of the time delay tg

(seconds) 0.1, 0.2, 0.3, 0.4, 0.5 0.1 … 0.5 (step: 0.001s)

Switch-selectable

ground fault protection

(I2t / fixed)

Setting range time delay tg at I2t 0.1, 0.2, 0.3, 0.4, 0.5 0.1 … 0.5 (step: 0.001s)

ZSI ground function per CubicleBUS module per CubicleBUS module

available

– not available

optional

L

N

S

I

G

1 Extended Instantaneous Protection (EIP) allows the WL breaker to be applied at the withstand rating of the breaker withminus 0% tolerance; that means no instantaneous override whatsoever. EIP further enables the circuit breaker to be appliedup to the full instantaneous rating of the breaker on systems where the available fault current exceeds the withstand rating.

2 Ground Fault Module cannot be removed after installation.

Notes: M = Motor protection setting (20 ms)Communications = Setting the parameters of the trip unit via the Breaker Data Adapter, MODBUS, or PROFIBUS

Key pad = Direct input at the trip unit

In


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21

available

– not available

optional


Basic Functions ETU748 ETU776

Parameter sets

Selectable between

parameter set A and B –

LCD

LCD, alphanumeric (4-line) –

LCD, graphic –

Communication

CubicleBUS integrated

Communication capability via

MODBUS or PROFIBUS

Metering function

Metering function capability with

Metering Function PLUS

Display by LED

Trip unit active

Alarm

ETU error

L trip

S trip

I trip -

N trip

G trip (only with ground fault module) (only with ground fault module)

G alarm (only with ground fault module) (only with ground fault module)

Tripped by extended protection or

protective relay function

Communication

Signal contacts with external CubicleBUS modules

(Opto or relay)

Overcurrent warning

Load shedding OFF/ON

Early signal of long time trip (200ms)

Temperature alarm

Phase unbalance

Instantaneous trip

Short-time trip

Long-time trip

Neutral conductor trip

Ground fault protection trip (only with ground fault module) (only with ground fault module)

Ground fault alarm (only with ground fault module) (only with ground fault module)

Auxiliary relay

ETU error

Protective Relaying Pick-up Accuracy

Phase Unbalance (I) 2% (5…50% In)

Phase Unbalance (V) 2% (5…50% Vn)

THD (I) (up to 29th) +/- 3% (80…120% Vn)

THD (V) (up to 29th) +/- 3% (80…120% Vn)

Overvoltage +/- 2% (80…120% Vn)

Undervoltage +/- 2% (80…120% Vn)

Under/Over Frequency +/- 0.1 Hz

Metering and Protective Relaying Accuracies

Metering Values Accuracy

(I) at 1 x In +/- 1%

(V) at 1 x Vn +/- 0.5%

(P) at 1x In +/- 3%

(S) at 1 x In +/- 2%

(Q) at 1 x In +/- 3%


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Type WL Low Voltage Metal-Enclosed SwitchgearWL Secondary Terminal Assignments

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Connection Diagram

• Industry standard MODBUS orPROFIBUS communication availableon all WL breakers from 200A to6000A.

• The high modularity of the WL CircuitBreakers and accessories allows simple

retrofitting of all communicationcomponents.

• The ability to connect additional inputand output modules to the breaker-internal CubicleBUS of the WL opensup a range of opportunities to reducesecondary device count and wiring andto increase functionality implemented

in switchgear.

• Innovative software products for localconfiguration, operation, monitoringand diagnostics of WL Circuit Breakersusing MODBUS, PROFIBUS or viaEthernet/Intranet/Internet.

• Complete integration of WL Circuit

Breakers in all Totally Integrated Powerand Totally Integrated AutomationSolutions.

Features

1 Breaker Data Adapter (BDA)

2 Browser-capable input and output device (e.g. notebook)

3 WL Circuit Breaker

4 COM 16 MODBUS module or COM 15

PROFIBUS module

5 Breaker Status Sensor (BSS)

6 Electronic Trip Unit

7 Metering function PLUS

8 Zone SelectiveInterlocking (ZSI) module

9 Digital output module with relay or optocoupler

outputs

10 Digital output module with relay or optocoupler

outputs, remotelyconfigurable

11 Analog output module

12 Digital input module

13 WinPM.Net on PC

14 PLC (e.g. SIMATIC S7)

15 BDA Plus

1 32

13 13

8 9 10 1112

4

5

6

7

14

15

WinPM.Net Server

WinPM.NetWeb Client Ethernet/ Internet/Intranet

BDA Plus*

WL Circuit Breakerwith COM 16

* The Siemens BDA Plus or meters, 9330, 9350, 95/9610 can be used as a gateway to enable Ethernet communication to the WL Circuit Breaker.

9510 Meter*(Ethernet Gateway)MODBUS Master

PLC or SupervisorySoftware

Ethernet

MODBUSOptional

BDA

Type WL Low Voltage Metal-Enclosed SwitchgearWL Communication Overview

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General Notes:• A blank/instrument compartment can

always be substituted for a breakercompartment.

• Any 22” wide section can be 32” wideif more conduit working room is needed.

• For bus duct connections – if incomingis top, Compartment A must be blank/instrument, if incoming is bottom,Compartment D must be blank/instrument.

• Bussed transition section is 22” wide• For close coupled transformer connections,

Compartment A must be blank/instrument.• Utility metering is always in a separate

section. Section width is dependent

on utility.

Blank orInstrument

Compartment

Main Breaker800, 1600,2000, 3200

Feeder Breaker800, 1600,2000, 3200

Feeder Breaker800, 1600,

2000

22 in.(559 mm)

Blank orInstrument

Compartment

Main Breaker800, 1600,2000, 3200

Feeder Breaker800, 1600,2000, 3200


2000

22 in.(559 mm)

Blank orInstrument

Compartment

Main Breaker800, 1600,2000, 3200


2000

Blank orInstrument

Compartment

22 in.(559 mm)

Blank orInstrument

Compartment

Main Breaker4000, 5000

Feeder Breaker800, 1600,2000,

3200, 4000Refer to Note 1

Feeder Breaker800, 1600, 2000

Refer to Note 1

32 in.(813 mm)

Blank orInstrument

Compartment


32 in.(813 mm)


Blank orInstrument

Compartment

Refer to Note 3

Main Sections – Non-Fused Breakers

Blank orInstrument

Compartment

Main Breaker800, 1600,

2000


2000


2000

22 in.(559 mm)

Blank orInstrument

Compartment

Main Breaker800, 1600,

2000


2000

Blank orInstrument

Compartment

22 in.(559 mm)

Blank orInstrument

Compartment



32 in.(813 mm)

Blank orInstrument

Compartment

Main Breaker5000

32 in.(813 mm)

Main Sections – Fused Breakers

A

Compartment

B

Compartment

C

Compartment

D

Compartment

Section Compartment Arrangement

24

Type WL Low Voltage Metal-Enclosed SwitchgearSection Configurations

Switchgear Depth Dimensional Information

(Dimensions below are for internal frames –not total structure depth)

• Non-fused indoor – 60” standard, 70” and80” optional

• Fused indoor – 65” standard, 75” and80” optional

• Non-fused non-walk-in outdoor – 60”standard and 75” optional

• Fused non-walk-in outdoor – 65” standardand 75” optional

• Non-fused walk-in outdoor – 60” standardand 75” optional

• Fused walk-in outdoor – 65” standard and75” optional

• Walk-in outdoor aisle is 42” deep

• Sections with cable connected main, tieand/or feeder breakers that are 3200 ampor greater must be minimum depth of70” for unfused breakers and 75” forfused breakers.

Note 1 – If a 4000 amp feeder breaker is installed inCompartment C, Compartment D must be a Blank orInstrument Compartment.

Note 2 – If a 4000 amp breaker is installed inCompartment B, Compartment A must be a Blank orInstrument Compartment.

Note 3 – If incoming is bottom, feeder breakers canmount in compartments A and/or B.

Note 4 – If a 3200 amp breaker is installed in

Compartment B, the middle level through bus is notavailable.

Note 5 – If a 3200 amp breaker is installed inCompartment D, the lower level through bus is notavailable.

Note 6 – Only one 800, 1600, 2000 amp feeder breakercan be mounted per section. If the horizontal main busis at the top of the section, the 800, 1600, 2000 ampfeeder breaker can go in the A compartment and a blank/instrument compartment must go in the Dcompartment. If the horizontal main bus is a the bottomof the section, the 800, 1600, 2000 amp feeder breakercan go in the D compartment and a blank/instrumentcompartment must go in the A compartment.

Note 7 – Any feeder section (or bus transition section)with 6000 amp vertical bus must be 32” wide.

AuxiliaryCompartment

32 in.(813 mm)

AuxiliaryCompartment

Main Breaker6000

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Approximate Weight – Lbs.

Section Type 22” 22” 32” 32” 38” 38” 48” 48” Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor

Auxiliary 1000 2000 1300 2500 1800 3200 N/A N/A

(450) (900) (585) (1125) (810) (1440)

Utility N/A N/A N/A N/A 2100 3500 2600 4500

Metering (945) (1575) (1170) (2025)

Breaker 1400 2400 2000 3300 N/A N/A N/A N/A

(630) (1080) (900) (1485)

Weights shown in pounds and ( ) kilograms.Weights shown do not include weight of circuit breaker removeable element (but does include cradle).Add 400 lbs for hoist and track.On outdoor switchgear, add 500 lbs for end walls (weight is for both ends). Refer to shipping documents for actual weights.

Siemens Type WL Low Voltage Switchgearcan be configured in many ways bycombining different section types. Upto five vertical sections plus a transitionsection can be shipped together as a unit.Maximum shipping split length for indoorstructures is 110 in. (2794 mm). If allvertical sections are not to be shipped asa unit, specifications need to be provided that describe the limiting factors (e.g.,low door or narrow hallway).

Normal indoor vertical sections are 96 in.(2438 mm) high and a minimum 60 in.(1524 mm) deep for non-fused breakersand 65 in. (1651 mm) deep for fusedbreakers. A top-mounted hoist, whichis shipped as an accessory in a separatecontainer, adds 6.2 in. (157 mm) for atotal installed height of 102.2 in.(2596 mm).

The outdoor switchgear assemblycontains the indoor assembly in anoutdoor housing. The overall height is112.8 in. (2865 mm) for non walk-indesigns and 114 in. (2896 mm) forwalk-in designs. The depth of anon walk-in outdoor

assembly with a 60 in. (1524 mm) internalstructure is 82.3 in. (2090 mm) and thedepth of a walk-in outdoor assembly witha 60 in. (1524 mm) internal structure is110.7 in. (2812 mm). Maximum shippingsplit length for outdoor structures is 66 in.(1676 mm).

The major assembly sections include:

• Transition Sections — used astransition to liquid filled transformeror to outdoor dry type transformers.

• Auxiliary Sections — used as incomingbus duct or cable entrance when amain breaker is not used.

• Main Sections — used to contain mainbreaker and may house metering andfeeder breakers.

• Feeder Sections — used to containfeeder breakers and other equipmentsuch as instrumentation.

• Tie Sections — used to contain tiebreaker and other equipment suchas feeder breakers.

Transition Section For Liquid Filled andOutdoor Dry Type Transformers

Dimension A Weight in inches (mm) in lbs. (kg)

Indoor 55 (1397) 500 (227)

Outdoor 61 (1549) 550 (250)

Type WL Low Voltage Metal-Enclosed SwitchgearShipping Weights and Dimensional Information

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1.25(32) typ.

1.50(38)

.86(22)

.86(22)

4.42 (112).75 (19) typ.

.75 (19) typ.

5.86(149) 7.88

(200)

Maximum availablespace in top or bottomof unit for customer's

power cables

TransformerThroat

Liquid filled &outdoor dry typetransformers only

(4) Holes for.50 (12mm)Grade 5anchor bolts

CL

B

End Trim Panel (typ.)Required on left andright end of switchboardlineup — adds 2”to total lineup width

A

14.9(378)

D

Space forsecondaryleads fromabove

Space for

secondaryleads frombelow

5.00(127) 2.12

(54)

3.00 (76)

2.00 (51)

7.00(179)

2.37 (60)

1.00 (25) W

W = 22 (559) or 32 (813)

2.00 (51)

1.00 (25)

4.40 (112)

C

4.00(102)

4.00(102)

4.82(122)

1.00(25)

2

1

Note3

Note 4

Indoor Floor Plan and Cable Space Details

Equipment Depth Direction of Cables

60” Non-Fused with(N, S, H or L-Class Breakers) Below 21.50 (546)

1 2

13.88 (353) 32.59 (828)

OR65” Fused with (F-Class Breakers)

Above 21.25 (540) 1 18.88 (480) 37.59 (955)

70” Non-fused with(N, S, H or L-Class Breakers)

Below 31.50 (800)1 2

13.88 (353) 32.59 (828)

OR 75” Fused with (F-Class Breakers) Above 31.25 (794) 1 18.88 (480) 37.59 (955)

80” Non-fused with Below 41.50 (1054) 1 2 13.88 (353) 32.59 (828)

(N, S, H or L-Class Breakers) Above 41.25 (1048) 1

80” Fused with Below 36.50 (927) 1 2

18.88 (480) 37.59 (955)(F-Class Breakers) Above 36.25 (921)

1

A B C D

Note: Dimensions shown in inches and (mm).1 Reduce by 7.88” if upper neutral is present with cables above or if a lower neutral is present with cables below.2 Reduce by 4.00” if an 800-3200A breaker is located in the bottom compartment. Reductions per notes 1 & 2 are additive. Example: cables below + lower neutral + 2000A breaker in bottom compartment = B-11.88.3 Reduce cable space by 4.00” x 4.82” if Neutral Riser is present. (Consult Factory).4 4.10 (104) if W=22; 4.60 (117) if W=32.

27

Type WL Low Voltage Metal-Enclosed SwitchgearDimensional Information

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Optional Hoist

24.9(632)hoist

Extension

102.2(2596)top ofHoist

Lifting Holes (3) Vent stack

FrontCompartment

E

BusCompartment

17.8(452)

CableCompartment

F

42.0 (1067)MinimumAisle SpaceRecommended

Floor Line

2.37(60)

92.0(2337)

4.0 (102)

A

G

Equipment Depth Breaker Compartment Depth Rear Compartment Depth Anchor Bolt Spacing

60 (1524) Non-fused breakers 19.8 (503) 22.4 (569) 59.13 (1502)

65 (1651) Fused breakers 24.8 (630) 22.4 (569) 64.13 (1629)


75 (1905) Fused breakers 24.8 (630) 32.4 (823) 74.13 (1883)


80 (2032) Fused breakers 24.8 (630) 37.4 (950) 79.13 (2010)

A E F G

Note: Dimensions shown in inches and (mm).

Indoor Side View


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Dimensions shown in inches (mm)1 82.27 dimension is based on 60” internal frame structure and if a deeper

internal frame structure is used (65 or 75) the extra depth should be addedto the 82.27 dimension.

2 75.37 dimension is based on 60” internal frame structure and if a deeperinternal frame structure is used (65 or 75) the extra depth should be addedto the 75.37 dimension.



Outdoor Non-Walk-in Floor Plan

Outdoor Non Walk-in Side View

1 60” is representative for a 60” deep switchgear internal structure. For otherinternal structure depths (65 or 75) add extra depth to 60” that is shown.

2 75.37 is representative for a 60” deep internal structure. For other internalstructure depths (65 or 75) add extra depth to 75.37 that is shown.

3

Refer to appropriate indoor plan view for available customer conduit informa-tion.

3

1

2


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Dimensions shown in inches (mm)1

110.7 dimension is based on 60” internal frame structure and if a deeperinternal frame structure is used (65 or 75) the extra depth should be addedto the 110.7 dimension.

2



4


Outdoor Walk-in Side View

1 60” is representative for a 60” deep switchgear internal structure. For otherinternal structure depths (65 or 75) add extra depth to 60” that is shown.

2 103.8” is representative for a 60” deep internal structure. For other internalstructure depths (65 or 75) add extra depth to 103.8” that is shown.

3

Refer to appropriate indoor plan view for available customer conduit informa-tion.

Outdoor Walk-in Floor Plan


3

1

2

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Current Transformers for FSII WL Breaker Applications - External Metering and Relaying 2

1 Requires complete compartment.2 Breaker compartment will accept 1 set of CT’s each on top and bottom primary disconnects.

Control Power Transformers – 115ºC Rise

Primary SecondarykVA Phase Voltage Voltage

3

5Single 240/480 120/240

10 1

15 1

Accuracy at 60 Hz Metering Burden (ohms)

Ratio B-0.1 B-0.2 B-0.5 B-0.9 B-1.8 Class 2000.5 0.3 0.3 0.3 0.3 0.3 C20

2500.5 0.3 0.3 0.3 0.3 0.3 C20

3000.5 0.3 0.3 0.3 0.3 0.3 C20

3200.5 0.3 0.3 0.3 0.3 0.3 C20

4000.5 0.3 0.3 0.3 0.3 0.3 C20

5000.5 0.3 0.3 0.3 0.3 0.3 C20

6000.5 0.3 0.3 0.3 0.3 0.3 C20

Current Transformers for FSIII WL Breaker Applications – External Metering and Relaying 2

Voltage Transformers – External Metering and Relaying

Accuracy Class at 60 HzThermal

Burden Volt-Amp RatingRatio W X Y Rating VA Hertz

600:120 0.6 1.2 1.2 100 150 50/60

480:120 0.6 1.2 1.2 100 150 50/60

288:120 0.6 1.2 1.2 100 150 50/60

Accuracy at 60 Hz Metering Burden (ohms)

Ratio B-0.1 B-0.2 B-0.5 B-0.9 B-1.8 Class

100.5 1.2 — — — — C5

150.5 1.2 — — — — C7

200.5 1.2 — — — — C9

250.5 1.2 — — — — C12

300.5 0.6 0.6 — — — C15

400.5 0.6 0.6 1.2 — — C20 500.5 0.6 0.6 1.2 — — C25

600.5 0.3 0.3 0.6 1.2 1.2 C21

800.5 0.3 0.3 0.6 0.6 1.2 C29

1000.5 0.3 0.3 0.6 0.6 1.2 C35

1200.5 0.3 0.3 0.3 0.6 0.6 C20

1500.5 0.3 0.3 0.3 0.3 0.6 C25

1600.5 0.3 0.3 0.3 0.3 0.6 C27

2000.5 0.3 0.3 0.3 0.3 0.3 C34

2500.5 0.3 0.3 0.3 0.3 0.3 C20

3000.5 0.3 0.3 0.3 0.3 0.3 C21

3200.5 0.3 0.3 0.3 0.3 0.3 C20

Type WL Low Voltage Metal-Enclosed SwitchgearVT, CPT, CT Data

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Type WL Low Voltage Metal-Enclosed SwitchgearGuide Form Specifications

32

SECTION [26 23 00] [16430]LOW VOLTAGE SWITCHGEAR, WL

PART 1 - GENERAL

1.1 SCOPEA. This section defines low voltage metal-

enclosed switchgear assemblies withdrawout circuit breaker elements foruse in AC systems, rated 600 V or less.

1.2 RELATED DOCUMENTSA. Drawings and general provisions

of the Contract, including General andSupplementary Conditions andDivision 1 Specification Sections, applyto this Section.

B. Related Sections (where applicable)include the following:

1. Section [26 xx xx] [16xxx] -

Medium Voltage Load Break Switches 2. Section [26 12 16] [16271] - DryType Substation Transformers

3. Section [26 12 19] [16271] -Liquid Type Substation Transformers

4. Section [26 09 13] [16290] –Electrical Power Monitoringand Control

5. Section [26 43 13] [16289] –Transient-Voltage Suppression forLow Voltage Electrical Power Circuits

6. Section [26 05 73] [16055] -Coordination Study

1.3 SUBMITTALSA. Submit shop drawings and product

data for approval and finaldocumentation in the quantitieslisted according to the Conditions ofthe Contract. Customer name,customer location and customer ordernumber shall identify all transmittals.

B. Documents for Approval: Generalarrangement drawings showingdimensioned elevation, floor plan,side view and foundation details, one-line diagram showing major features,nameplate legends, schematicdiagrams and bill of material.

C. Final Documents: Recorddocumentation to include those

in 1.03.B and wiring diagrams, list ofrecommended spare parts, instructionand installation manuals [and certifiedtest reports]

D. Product Data: Include features,characteristics and ratings of individualcircuit breakers and other components.Also, time-current characteristiccurves for over current protectivedevices, including circuit-breaker tripdevices and fusible devices.

1.4 RELATED STANDARDSA. Comply with requirements of latest

revisions of applicable industrystandards, specifically including

the following: 1. ANSI/IEEE C37.20.1 – Metal-

Enclosed Low Voltage Power CircuitBreaker Switchgear

2. ANSI/IEEE C37.50 – Test Procedurefor Low Voltage AC Power CircuitBreakers Used in Enclosures

3. ANSI/IEEE C37.51 – ConformanceTesting of Metal-Enclosed LowVoltage AC Power Circuit BreakerSwitchgear Assemblies

4. ANSI/IEEE C37.13 – Low VoltageAC Power Circuit Breakers Usedin Enclosures

5. ANSI C37.16 – Preferred Ratings,

Related Requirements andApplication for Low Voltage PowerCircuit Breakers and AC PowerCircuit Protectors

6. ANSI/IEEE C37.17 - Trip Devices forAC and General Purpose DC LowVoltage Power Circuit Breakers

7. UL 1558 – Metal-EnclosedLow Voltage Power CircuitBreaker Switchgear

8. UL 1066 – Low Voltage AC andDC Power Circuit Breakers Usedin Enclosures

9. NEMA SG5 – Power SwitchgearAssemblies

10. NEMA SG3 – Low Voltage PowerCircuit Breakers

B. Manufacturer Seismic Qualification:The low voltage switchgear shall meetand be certi-fied to seismicrequirements specified in the [IBC 2009International Building Code] [CBC 2010California Building Code] [ASCEAmerican Society of Civil Engineers 7-10].

1. The low voltage general purposedry type transformer shall becomplaint with IBC 2009parameters:

a. Building Occupancy Category(as defined in Table 1.1 fromASCE 2010): [I] [II] [III] [IV]

b. Seismic Design Category:[A] [B] [C] [D] [E] [F]

c. Site Class: [A – Hard Rock][B - Rock] [C – Very dense soiland soft rock] [D – Stiff soilprofile] [E – Soft Soil Profile][F – Soil vulnerable to potentialfailure or collapse under seismicloading] as defined in IBC 2006Table 1613.5.2 Site ClassDefinitions.

d. Ip – Importance Factor: [1.5 –Components must function afteran earthquake for life safetypurposes (Building Occupancy

Code IV)] [1.25 - Buildings andstructures that represent asubstantial hazard to human lifein the event of failure or thatcan cause substantial economicimpact or mass disruption ofday-to-day civilian life (BuildingOccupancy Code III)] [1.0 –Non-essential buildings.Function not life critical.(Building Occupancy Code Iand II)]

e. Ss – Mapped SpectralAccelerations for Short Periodsat 0.2 seconds – 180%g

f. Sds – 5% Damped DesignSpectral Response Accelerationsfor Short Periods at 0.2 seconds –1.2.g. z/h – Height factor ratio:[___] Note: Ratio is a calculatedvalue equal to the floor the gearis installed on divided by 12.A 6th floor installation is a0.5 value. A basement orground floor installation is a0.0 value.

2. Equipment shall be designed to belocated in a concrete and steel,moment-resisting frame buildingnot exceeding 12 stories in heightwith a minimum story height of10 feet.

1.5 QUALITY ASSURANCEA. Manufacturer Qualifications:

Manufacturer of this equipment shallhave a minimum of 5 years experienceproducing similar electrical equipment.The manufacturer of the switchgearassembly shall be the samemanufacturer as the breakers. Themanufacturer shall be ISO 9001 or9002 certified.

1.6 DELIVERY, STORAGE AND HANDLINGA. Deliver products in factory labeled

packages. Shipping groups shall notexceed 15 ft. in length.

B. Circuit breakers shall be shipped insidetheir respective cells in which theywere factory acceptance tested.

C. Store and handle in strict compliancewith manufacturer’s instructions andrecommendations. Protect frompotential damage from weatherand construction operations. Storeso condensation will not form on orin switchgear and if necessary, applytemporary heat where required toobtain suitable service conditions.

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PART 2 - PRODUCTS2.1 MANUFACTURERSA. The low voltage switchgear shall be

manufactured by Siemens, Type-WL

Low Voltage Switchgear or pre-approved equal. Approvedmanufacturers are as follows:

1. SIEMENS - Type-WL LowVoltage Switchgear

2.2 RATINGSA. System Configuration: Switchgear

suitable for application in three-phase, [60 Hz] [50 Hz], [3 wire][4 wire] [grounded-neutral] [3 wireungrounded] [3 wire high-impedancegrounded] system.

B. Electrical Ratings: 1. Nominal System Voltage: [600 V]

[480 V] [240 V] [208 V] [OTHER]. 2. Maximum Design Voltage: [635volts with non-fused breakers] [600volts with fused breakers]

3. Short-Circuit Current: [100kA][150kA] [200kA]

4. Main-Bus Continuous Current:[1600] [2000] [3200] [4000][5000] [6000] A.

5. [Neutral Bus Continuous Current:][50] [100] percent of mainphase bus.

2.3 GENERAL REQUIREMENTSA. The switchgear shall be factory

assembled and tested and comply withapplicable industry standards. It shallbe a coordinated design so thatshipping groups are easily connectedtogether at the site into a continuousline-up. Necessary connectingmaterials shall be furnished. All powercircuit breakers and assemblies shall beproduced by a single manufacturer.

B. The switchgear assembly shall consistof one or more metal-enclosed sectionsin an [indoor NEMA 1 enclosure][outdoor NEMA 3R non walk-inenclosure] [outdoor NEMA 3Rwalk-in enclosure].1. End sections shall include

provisions for main bus extensionand installation of futurevertical sections.

2. The design shall incorporatepreformed steel channels, anglesand structural components boltedtogether and reinforced to form arigid, self-supporting assembly.

3. Fabricate enclosure withremovable, [rear cover panels,secured by captive screws], [hingedrear doors with captive screws][hinged rear doors with three-pointlatch and padlockable handle] toallow access to rear interior

of switchgear.

C. Front breaker doors and covers mustbe free of any ventilation openings.

D. Horizontal barriers are to be providedto form individual circuit breaker or

metering compartments. Circuitbreaker compartments are to bebarriered from the bus compartmentthrough a primary disconnect assembly.Each circuit breaker or meteringcompartment shall be provided with ahinged front door secured with hand-operated [lockable] rotary latches.

E. Circuit breaker compartments shallinclude stationary primary contactdisconnects that shall be silver-platedcopper at the connection points and ofone-piece construction.

1. The upper set of disconnects shallbolt directly to the main bus and,

for feeder circuit breakers, thelower set shall extend to therear cable area and shall beinsulated where they pass throughthe main bus compartment.

2. Primary disconnects shall be sizedfor the maximum continuouscurrent for the frame size of thecircuit breaker which is located inthe compartment.

3. Interlocks shall be provided toprevent a circuit breaker elementof the incorrect frame size orinterrupting rating from beinginserted into the compartment.

4. Secondary control andcommunication connections,when required, shall be located in aseparately accessed area that isaccessible from the front of theswitchgear without opening thebreaker compartment door orexposing any power cables orbussing. The secondary controlcontacts shall be of the slidingcontact design, silver plated andengage the drawout circuit breakerelement in the “connected” and“test” positions.

F. All control wiring within the assemblyshall be continuous and shall terminate

on each end at a suitable terminalblock. Control wiring shall be 14-gaugeminimum, stranded type SIS and shallbe labeled at each end with sleeve-typewire markers.

1. Wire markers shall be machineimprinted with the wire name asindicated on the wiring diagrams.

2. Terminals shall be insulatedlocking fork or ring tongue typeexcept where connecting tocomponents that do not acceptthese terminations. Controlwiring for external connectionsshall be terminated in a separate

front accessible compartment forease of access.

G. Finish: Steel parts shall be preparedfor painting by a five-stage washsystem consisting of an alkalinecleaner, fresh water rise, iron

phosphate treatment, fresh waterrise and non-chromate sealer. Aftercleaning and stabilization, the steelparts shall be coated with athermosetting polyester powderapplied with electrostatic equipmentat a nominal 2 mils dry film thicknessand then cured properly. The paintfinish shall have a pencil hardness of2H, a salt spray rating as defined inASTM B-117-73 of 600 hours. Paintcolor shall be ANSI 61 light gray.

H. Bus isolation barriers shall be arrangedto isolate the buses on either side ofeach main and tie circuit breaker from

each other.I. [Incoming line isolation barriers shallbe arranged to isolate the incomingline connections from the mainhorizontal and vertical bus].

J. Main bus shall connect verticalsections and shall be uniform capacitythe entire length of assembly. Verticaland horizontal bus bar shall utilizea channel shape design to maximizeshort circuit withstand capability andminimize heat rise. The mainhorizontal bus shall be run in a vertical,edge-to-edge arrangement for highshort circuit strength. Access tothe rear cable termination area shall bepossible without reaching over themain and vertical bus.1. Bus shall be [98 % minimum

conductivity copper silver-platedover entire length of the bus bar][98 % conductivity copper tin-plated over entire length of the bus bar].

2. Feeder Circuit-Breaker LoadTerminals: Plated copper busextensions equipped withpressure connectors for outgoingcircuit conductors.

3. Ground Bus shall be copper of 98 %minimum conductivity, minimumsize 1/4 by 3 inches.

4. Bus bracing shall be equal to theshort circuit interrupting rating ofthe lowest rated circuit breakerapplied in the assembly or100kA minimum.

5. Provide for future extensions fromeither end of main phase, neutraland ground bus by means ofpredrilled bolt holes andconnecting links.

K. Bus/Cable compartment barriers:Barriers shall be supplied to isolatethe rear cable area from the mainbus area.

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L. [Insulated bus bar shall consist of busbars enclosed in factory-applied, flame-retardant UL recognized insulation

system. Bolted bus joints shall beinsulated with secure joint covers thatcan easily be removed and reinstalled.]

M. [Low Voltage High-ResistanceGrounding System] [Installed in theswitchgear assembly] [Contained inseparate NEMA 1 enclosure] for useon [480 V] [600 V] [wye] [delta]source, including the followingcomponents:

1. Meter relay (MR) 2. 3 Indicating lights: white for

“Normal,” red for “Ground Fault”green for “Pulsing”

3. ”Reset“ push button

4. ”Test“ push button5. On - Off switches for systemand pulse

6. Repeat cycle timer, set to produceapprox. 30 current pulsesper minute

7. Neutral grounding resistor assembly8. Pulse resistor assembly9. Test resistor assembly10. Relay for repeat cycle timer11. Alarm relay, with extra interlocks

for remote alarm (59X) 12. Control power transformer

13. Neutral ammeter & currenttransformer

14. Optional Portable clampon ammeter 15. [3 Grounding transformers for

generating a neutral CPT] (For DeltaSystem without a system neutral

N. Outdoor NEMA 3R Non Walk-In enclosure shall consist of indoorswitchgear assemblies in weather-resistant steel housing. Enclosureshall be painted steel, integralstructural-steel base frame withfactory-applied asphalt undercoating.Each section shall be equipped withthe following features:

1. Structural design and anchorageadequate to resist loads imposed

by 125-mph wind. 2. Space heater operating at [full]

[one-half of] rated voltage, sized toprevent condensation.

3. Louvers equipped with insect/rodent screen and filter andarranged to permit air circulationwhile excluding exterior dustand rodents.

4. Internal aisle of sufficient width topermit protective-device withdrawal.

5. Load center for distribution ofpower to lights, receptaclesand heaters.

6. Incandescent lighting receptacleswith three-way switch.

7. Duplex receptacle with ground

fault protection.O. Outdoor NEMA 3R Walk-In enclosure

shall consist of indoor switchgearassemblies in weather-resistant steelhousing having an operating aislespace of approximately 42 inches.Enclosure shall be painted steel,integral structural-steel base framewith factory-applied asphaltundercoating. Each section shall beequipped with the following features:

1. Structural design and anchorageadequate to resist loads imposed by125-mph wind.

2. Space heater operating at [full]

[one-half of] rated voltage, sized toprevent condensation. 3. Louvers equipped with insect/

rodent screen and filter andarranged to permit air circulationwhile excluding exterior dustand rodents.

4. Internal aisle of sufficient widthto permit protective-devicewithdrawal, disassembly andservicing in aisle.

5. Aisle access doors with outsidepadlocking provisions and interiorpanic latches.

6. Adequate incandescent lighting

receptacles with three-way switchat each access door. 7. A duplex receptacle with ground

fault protection, at aisleaccess door.

8. A load center shall be supplied fordistribution of power to lights,receptacles and heaters.

9. Aisle ventilation louvers equippedwith insect/rodent screen and filterand arranged to permit aircirculation while excluding exteriordust and rodents.

P. Remote Racking 1. A remote racking device shall be

supplied to allow qualified

personnel to rack Siemens TypeWL breakers into Connect, Test andDisconnect positions from up to 30feet away from the breaker andoutside the arc flash hazard boundary.

2. The remote racking device shallsupport utilization on any FrameSize 2 or Frame Size 3 WL breaker(including fuse carriage on fusedFrame Size 3 WL breaker).

3. The remote racking device shall beportable and weigh less than 30pounds (excluding cables andremote control panel).

4. The remote racking device shallhave integral torque overloadsensing to prevent damage to the

breaker racking mechanism. 5. The remote racking device shall

allow breaker to be racked toany position (disconnect, test,connect) regardless of the startingposition of the breaker and withoutthe need for user input as to thestarting position.

6. The remote racking device shallsupport field retrofit on Type WLLow Voltage Switchgear.]

2.4 COMPONENTSA. Instrument Transformers: Comply with

IEEE C57.13.

1. Potential Transformers: Secondary-voltage rating of 120 V and NEMAaccuracy class of 0.6 with burdensof W, X and Y.

2. Current Transformers: Ratios asindicated; burden and accuracyclass suitable for connected relays,meters and instruments.

B. Multifunction Digital-MeteringMonitors shall be UL-listed o