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POWER-ZONE

Load Center UnitSubstations

Class 6020

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General Layout Information . . . . . . . . . . . . . . . . . . . . . . . . . .1

General InformationGeneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Standard Product Information . . . . . . . . . . . . . . . . . . . . . . . . . .4

Major Component General InformationHVL Metal-Enclosed Load Interrupter Switchgear . . . . . . . . .5VISI-VAC Metal-Enclosed Circuit Interrupter Switchgear . . .6Metal-Clad Switchgear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7PZ III Low Voltage Drawout Switchgear . . . . . . . . . . . . . . . . . .8POWER-STYLE QED Switchboard Incoming Primary

Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9POWER-STYLE QED Switchboard Secondary Main

Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9POWER-STYLE QED Switchboard Distribution Sections . .10POWER-DRY VPI Dry-Type Transformer . . . . . . . . . . . . . . . .12POWER-CAST Cast-Coil Transformer . . . . . . . . . . . . . . . . . .13UNI-CAST (Cast-Coil Primary/VPI Secondary)

Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Liquid-Filled Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15MODEL 5/6 Motor Control Center . . . . . . . . . . . . . . . . . . . . .16Busway Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Special Applications and ProductsPOWER-ZONE Type 36 Compact Section

Unit Substation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Model III POWER-ZONE Package Unit Substation . . . . . . .19

Typical Key Interlock Schemes . . . . . . . . . . . . . . . . . . . . . .20

5 and 15 kV Primary Switchgear Layout InformationHVL/VISI-VAC POWER-DRY Transformer . . . . . . . . . . . . .29HVL/VISI-VAC POWER-CAST and

UNI-CAST Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

HVL/VISI-VAC Liquid-Filled Transformers . . . . . . . . . . . . .31Metal-Clad Switchgear POWER-DRY, POWER-CAST,

and UNI-CAST Transformers . . . . . . . . . . . . . . . . . . . . . . . .32Metal-Clad Switchgear Liquid-Filled Transformers . . . . . .33

25 kV Primary Switchgear Layout InformationHVL POWER-DRY and POWER-CAST Transformers . . . .34HVL Liquid-Filled Transformers . . . . . . . . . . . . . . . . . . . . . .35

34 kV Primary Switchgear Layout InformationHVL POWER-CAST Transformer . . . . . . . . . . . . . . . . . . . . .36HVL Liquid-Filled Transformer . . . . . . . . . . . . . . . . . . . . . . .37

600 V Primary Switchboard Layout InformationQED Switchboard POWER-DRY Transformer . . . . . . . . . .38

Transformer Layout Information

POWER-DRYTransformer . . . . . . . . . . . . . . . . . . . . . . . . . . . .39UNI-CAST Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43POWER-CAST Transformer . . . . . . . . . . . . . . . . . . . . . . . . . .45Liquid-Filled Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

5 kV Secondary Switchgear Layout InformationPOWER-DRY Transformer HVL/VISI-VAC . . . . . . . . . . . . .52POWER-CAST Transformer HVL/VISI-VAC . . . . . . . . . . . .53Liquid-Filled Transformer HVL/VISI-VAC . . . . . . . . . . . . . .54POWER-DRY and POWER-CAST Transformers

Metal-Clad Switchgear . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55Liquid-Filled Transformer Metal-Clad Switchgear . . . . . . .56

600 V Secondary Switchboard Layout InformationPOWER-DRY, POWER-CAST and UNI-CAST Transformers

QED Switchboard to 4000 A . . . . . . . . . . . . . . . . . . . . . . . . .57POWER-DRY, POWER-CAST and UNI-CAST Transformers

QED Switchboard 4001 5000 A . . . . . . . . . . . . . . . . . . . .5Liquid-Filled Transformers QED Switchboard to

4000 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59Liquid-Filled Transformers QED Switchboard

4001 5000 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

600 V Secondary Draw-Out Switchgear LayoutInformation

POWER-DRY, POWER-CAST and UNI-CASTTransformers PZ III Switchgear . . . . . . . . . . . . . . . . . . . . .61

Liquid-Filled Transformers PZ III Switchgear . . . . . . . . . . .6

Table of Content s

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1

General Layout Information

Please read this page before attempting to use the inter-face drawings in this catalog! As with any engineeredproduct, substation standards do change from time to time.The substation layout standards shown on the following pagesare the latest that have been produced by the Square DCompany, and are current as of the date of publication. Whenin doubt about any standard shown, please contact your localfield sales office. Please note that the dimensions shown hereare not for construction.

The interface drawings begin on Page 29.

All interfaces are shown with the primary or secondary equip-ment covered by that particular layout in solid lines, and thetransformer is shown in dotted lines. Please note dimensionsnoted as min or minimum, which denote the minimum pos-sible dimension of a piece of equipment and requires furtherclarification on a case-by-case basis either from the trans-former tables in this catalog or individual equipment dimen-sional information in another catalog. Also, reference pointsmarked as CL (short for centerline), can either represent thecenterline of the actual electrical connection between the

transformer and the piece of equipment under consideration(as is often the case in indoor units) or can represent the center-line of the hole pattern for the bolts which will hold the twopieces of equipment together(as is often the case withoutdoor units). In either case, for the purposes of this catalogthese serve only as convenient points of reference. Primaryinterfaces are drawn with the primary equipment on the left,and secondary interfaces are drawn with the secondary equip-ment on the right.

The layout standards in this catalog are covered in this order:primary interfaces are shown first, transformer dimensionalinformation is shown next, and secondary interfaces are shownlast. It is therefore recommended that the following procedurebe used for a layout:

1. Knowing the primary equipment type, its voltage class(either 600 V, 5 kV, 15 kV, 24 kV or 34 kV) and the transformertype, find the appropriate primary equipment-to-trans-former interface, noting the overlap, if any, between the frontof the primary equipment and the front of the transformer.Please read all of the footnotes! They provide valuableinformation and are necessary because in manyinstances a substantial amount of information is incor-porated into one interface drawing.

2. Find the transformer dimensional information for the transformer in question. Please be sure that the dimensionsshown can be applied. The footnotes give a substantiaamount of information about situations in which the dimensions shown do not apply. When in doubt, please contacyour local field sales office about transformer dimensions.

3. The offset, if any, between the rear of the transformer andthe rear of the primary equipment can now be determined

4. Knowing the secondary equipment type and its voltageclass (5 kV or 600 V), find the transformer-to-secondaryinterface for the secondary equipment in question. For QEDswitchboards and POWER-ZONE III Low-Voltageswitchgear, please note whether the secondary full-loadcurrent is above or below 4000 A. The overlap, if anybetween the transformer front and the secondary equipment front can now be determined, as well as any reaoverlap. Please note that because of the complex nature oQED switchboards and POWER-ZONE III low-voltageswitchgear, these types of equipment should be laid ouusing the appropriate layout manual or Quote-to-Cash

product selector prior to substation layout. Please contacyour local field sales office for details on this process.

5. The substation layout is now complete. Facing the front othe substation, the primary equipment is on the left, and thesecondary equipment is on the right. If the opposite orientation is desired, the layout may be mirror-imaged with noloss of accuracy.

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2

General Information

Secondary Unit Substation

kVA ratings: 225-5000 kVA (higher ratings available)

Receives power up to 34,500 volts

Transforms to secondary voltages of 1000 volts and below

Distributes lower voltages to load areas

Indoor or outdoor construction

Primary Unit Substation

kVA ratings: 225-5000 kVA (higher ratings available)

Receives power up to 34,500 volts

Transforms to secondary voltages from 2400 volts to 5000volts


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3

General Information

General

The unit substation is a vital piece of equipment to be consid-ered when planning industrial, commercial, and institutionalelectrical system demands. Square D Company can provide aunit substation to receive up to 34,500 volts, transform this to

a lower utilization voltage, and control its distribution to nearbyload areas. Square D Company is a single source supplier ofboth primary and secondary unit substations.

Square D considers the unit substation as a single product thatis designed, coordinated, assembled, and tested at differentmanufacturing locations as multiple self-enclosed pieces ofequipment intended for connection at the jobsite. Various com-binations of incoming sections, t ransformer sections, and dis-tribution sections make possible a variety of designs (See unitsubstation selection table on this page).

Both Square D Companys primary unit substations and sec-ondary unit substations are designed, manufactured, andtested in accordance with ANSI C37.121-1989 and otherapplicable ANSI standards, and the applicable standards ofNEMA, UL, and IEEE.

When designing a unit substation, refer to the typical arrange-ments shown in Section 10 of ANSI C37.121-1989. It is alsoimportant to consider the environmental conditions, systemconditions, installation conditions, and load requirements asoutlined in ANSI C37.121-1989.

A unit substation offers the following operational and econom-ical advantages:

SavingsMedium voltage power is purchased at a lower rate than lowvoltage power can be purchased. Transformation to the utiliza-tion voltage at the load center replaces long, high current lowvoltage feeder circuits with less expensive primary cable in thedistribution system.

Better System PerformancePrimary voltage distribution systems feeding load center trans-formers will minimize system voltage drop and improve voltageregulation. Unit substations also divide the electrical systeminto independent load areas, which isolates each area from therest of the system.

SafetyLive parts of all electrical devices are completely enclosed in agrounded steel enclosure. For separate accessibility, internalsteel barriers isolate the incoming line, transformer, and lowvoltage distribution sections from each other. All equipment isdesigned and built in accordance with the latest NEMA andANSI standards. Some components of the unit substation areUL Listed.

Ease of InstallationThe equipment is divided into factory-coordinated shippingsections for ease of handling at the jobsite. Hardware is pro-vided for the connections. Incoming and outgoing connectionsare accessible for ease of installation.

Ease of ExpansionNew unit substations are easily added to primary voltage distribution systems with little effect on the existing equipmentAdditional incoming line or low voltage distribution sectionscan be added to an existing unit substation.

MaintenanceThe equipment consists of components designed for minimummaintenance. Refer to operation and maintenance manuals foeach section.

Seismic CalculationsSeismic calculations are available for most Square D substa-tion equipment to show that when anchored as recommendedthey will remain anchored during a seismic event. All seismiccalculations are made per the Uniform Building Code. For QEDSwitchboards, seismic calculations are not available, but QEDSwitchboards have been tested and are seismically qualifiedup to seismic zone 4 when anchored as recommended (seeQED switchboard catalog, class 2742 for details).

Manufacturers ResponsibilitiesUnit substations are engineered and manufactured by Square DCompany. A single warranty covers the entire unit substationSquare D Company also has a field services division which isavailable for start-up service along with other services.

Unit Substation Selection Tables

Equipment typeSPECRight

Catalog ClassaSection

Primary Section

Metal-clad switchgear 16350-1 6055

HVL Metal enclosed load interrupter switch 16361-1 6040

VISI/VAC Metal enclosed vacuum loadinterrupter switchgear 16361-2 6046

Air terminal chamber 16322-1 SeeTransformer

QED2 Switchboards 16426-1 2742

Transformer Section

VPI conventional power-dry 16322-1 7420

Power-cast cast resin(Primary and secondary coils) 16322-1 7310

Uni-cast cast resin primary withVPI secondary coils 16322-1 7320

Liquid filled Oil Silicon R-Temp 16322-1 7240

Busway

I-Line/I-Line II 16466-1 5600

Power-Zone Metal-Enclosed 16466-2 6090

a See specific catalog class for individual equipment accessories.

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4

General Information

Unit Substation Selection Tables (continued)

Secondary Section

Equipment typeSPECRight

Catalog ClassaSection

Metal-clad switchgear 16350-1 6055

HVL Metal enclosed loadinterrupter switchgear 16361-1 6040

VISI/VAC Metal enclosed vacuum loadinterrupter switchgear 16361-2 6046

Air terminal chamber 16322-1 SeeTransformer

QED2, 3, 4 low voltage switchboards 16426-1 2742, 2743,2744

PZIII LVDO switchgear 16350-2 6035

Model 6 motor control center 16482-1 8998

Medium voltage motor control center (8198) 16352-1 8198

a See specific catalog class for individual equipment accessories.

SpecificationsSquare D Company offers specifications for a major portion of

its products on computer disks in a program called SPECRight.Contact your local Square D Company sales office to inquireabout this information. The column titled SPECRight Sectionfound in the table identified as the Unit Substation SelectionTable references the section in SPECRight to pull the specifi-cations for each major component in a unit substation.

Standard Product Information

Paint: ANSI 49

Enclosure Type: Indoor - NEMA Type 1Outdoor , non-walk-in - NEMA Type 3RPower Zone Center (Walk-in House)

Connections: High Voltage Windings - DeltaLow Voltage Windings - Delta or Wye

Common 34.5 kV, 24.9 kV, 13.8 kV, 13.2 kV, 12.47 kV,Primary Voltages: 7.2 kV, 4.8 kV, 4.16 kV, 2.4 kV, 480 V

Common 4.8 kV, 4.16 kV, 4.16Y/2.4 kV, 2.4 kV,Secondary Voltages: 600 V, 480 V, 480Y/277 V, 208Y/120 V

Frequency Rating: 60 Hz

Note: For additional ratings and application data, refer to thecatalog sections referenced in the Unit Substation SelectionTable on Page 1.

Power-Flow Nameplate

Power-Flow Nameplates are available showing electrical flow

through a one line diagram.

An 11x17 (max. size) power-flow nameplate is a replacementfor mimic bus on which users usually require the use of paint,tape, or plastic strips. The nameplate consists of a white back-ground with a b lack core for the lettering and one line. If the cus-tomer does require mimic bus, the options are paint or plasticstrips.

M

CustomerGround

#2BKVCable

PerPhase

M

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5

Major Components General Information

Metal-Enclosed, Type HVL, Medium VoltageLoad Interrupter Switchgear

General Description

Primary and secondary equipment

UL Listed (if required; restrictions apply)

2.4 to 38 kV

600 and 1200 amperes continuous current

Unfused/fused

Current limiting/boric acid fuses

FUSELOGIC blown fuse indication(can also coordinate with shunt trip option for auto-matic shunt trip)

Shunt trip

Indoor and outdoor weatherproof enclosures

Single switch bay incoming section

Duplex arrangement available

Line selector arrangement available

Utility/customer metering bay available

Multiple switch bays for distribution sections

Secondary designed for future additions

For further information, see Square D Catalog Class 6040.

Fusible Interrupter Switch 5 and 15 kV Single Bay Section

NEMA Type 115 kV Indoor Unit

NEMA Type 3R15 kV Outdoor Unit with outer door opened

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General Description


No external arcing current interruption within vacuuminterrupters

Automaticvisible circuit isolation

Long life 2500 full-load interruptions

Shunt-trip mechanism

Shunt-close mechanism

Motor operator standard for remote operation

Protective relaying capability (phase overcurrent, groundfault, phase fault, phase failure, undervoltage, etc.)

Requires no more floor space than conventional metal-

enclosed air switches Retrofit opportunities with existing load interrupter

switchgear

Secondary designed for future addition

Indoor and outdoor enclosures

See Class 6046 for further information.

Metal-Enclosed VISI/VAC, Medium VoltageCircuit Interrupter Switchgear

(Shown here with door open) (Door closed)

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General Description


VR Circuit Breakers

5 and 15 kV

1200-3000 amperes

250-1000 MVA interrupting capacity

60 and 95 kV BIL

Indoor and outdoor enclosures

Removable circuit breaker

Fully compartmentalized construction

Grounded metal barriers

Automatic shutters

Insulated bus

Mechanical interlocks

Disconnect type voltage transformers-CPT and VTs

Low voltage instrument/ control compartment isolatedfrom primary voltage area

Protective relaying and metering

See brochure 6055BR9402 for further information.

MASTERCLAD Metal-Clad Switchgear

Typical NEMA Type 1 Switchgear Assembly

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POWER-ZONEIII Low Voltage DrawoutSwitchgear

General Description Low Voltage ANSI rated switchgear meets ANSI

C37.20.1, ANSI 37.51, NEMA SG-5.

Individually mounted, ANSI rated, low voltage, power DS(not fusible) and DSL (fusible) circuit breakers. Breakersmeet ANSI C37.13, ANSI C37.16, ANSI C37.50, NEMASG-3.

Available breakers:DS, DSL-206, DS-206H, DS-206E 800 A FrameDS, DSL-416, DS-416H 1600 A FrameDS-420 2000 A FrameDS, DSL-632 3200 A FrameDS, DSL-840 4000 A FrameDS-850 (forced-air cooled) 5000 A Frame

Microprocessor trip device enables the user to attainoptimum system selectivity and coordination. Digitrip510 standard, POWERLOGIC Digitrip 810D available.

Breakers are 100% rated, two-step stored energy circuitbreakers

Use as main or feeder devices

Copper bus systems up to 5000 A

Integral ground fault protection

Key interlocking Compartmentalized construction per ANSI C37.20.1 Optional circuit breaker lifting device mounted on the

switchgear

Indoor or outdoor construction. Outdoor constructionuses POWER-ZONE center enclosure.

Front and rear accessibility

Rear access required for loadside cable connections

UL Labeled (optional). UL 1558 for structure, UL 1066 forDS circuit breakers

Optional BreakerLifting Device

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QED POWER-STYLESwitchboards

Incoming Primary Section

General Description

Used as incoming section of 600 volt secondary unisubstation (POWER-DRY transformer only)

Available up to 5000 amperes

Fixed or Drawout construction

Main devices:Molded case circuit breakers-M, N, and P frames(2500 A max.)Fusible switch - BOLT-LOC (4000 A max.)Stored Energy Electronic trip circuit breakers-SE (4000Amax.)Masterpact (5000 A max.)

Ground fault protection and metering available



Incoming cable terminations available

UL Labeled

QED Secondary Mains

General Description Used as the secondary main device or six subdivision

mains up to 4000 A

Available up to 5000 amperes

Fixed or Drawout construction

Main devices:Molded case circuit breakers-M, N, and P frames(2500 A max.)Fusible switch-BOLT-LOC (4000 A max.)Electronic t rip circuit breakers-SE (4000 A max.)Masterpact (5000 A max.)



Top or bottom feed Front and rear accessibility

UL Labeled

9


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QED Distribution Section

General Description Used as distribution sections in conjunction with QED

main devices

Available in:I-LINE distribution section-group mounted I-LINE circuitbreakersQMB distribution section-group mounted QMB/QMJswitches

3000 A maximum vertical bus

5000 A maximum main bus

80% or 100% rated circuit breakers available

Integral Zone Selective Interlocking

Ground Fault protection and metering available Single or Double row construction

Indoor or outdoor construction for I-LINE panels

Copper or aluminum bus available


UL Labeled

QMB Distribution Section

I-LINE Distribution Section 63" panel height for 2000 A vertical bus

72" panel height for 3000 A vertical bus

54" maximum single-row breaker mounting space

117" maximum double-row circuit breaker mountingspace for 2000A vertical bus

112.5" maximum double-row circuit breaker mountingheight for 3000A vertical bus

See QED catalog (class 2742) for circuit breaker mount-ing restrictions and panel widths

QMB/ QMJ Distribution Section 3000 A maximum vertical bus rating

72" maximum QMB/QMJ switch mounting space

Switches up to 400 A mount in 36" wide section

Switches 400 A-1200 A mount in 42" wide section

I-LINE Distribution Section

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POWER-STYLE Switchboards

QED-3 Distribution Sections

QED-3 Distribution Sections with QED Main

General Description For use with QED Main Section

Individually mounted feeders to 1200 A

3000 A maximum vertical bus ratings

5000 A maximum main bus

80% or 100% rated circuit breakers

Key interlocking available Integral zone selective interlocking available


Compartmentalized construction

Each 24" (610 mm) section has four 18" (457 mm) com-partments for mounting c ircuit breakers


Copper or aluminum bus available


UL Labeled

See QED-3 catalog (class 2743) for circuit breakermounting restrictions.

QED-4 Distribution Sections

General Description For use with QED main section

Individually mounted feeders to 2500 A (SE,NE, and NXdrawout c ircuit breakers)

4000 A maximum vertical bus ratings

5000 A maximum main bus 100% rated circuit breakers

Integral zone selective interlocking available


Key interlocking available Compartmentalized construction:

Barriers between the circuit breaker compartment andthe through-busBarriers between the through-bus compartment andthe lug compartment

Each 24" wide (610 mm) section has four 18" high com-partments for mounting c ircuit breakers

Optional circuit breaker lifting device mounted on theswitchboard

Indoor or outdoor construction Copper or aluminum bus available


UL Labeled

See QED-4 catalog (class 2744)

11


Distribution with Drawout SE Circuit Breakers

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12


Dry Type Transformers

General Description

Ratings

Item Standard Optional

kVA Sizes 225-5000

Primary Voltage Classes 480 V to 26.4 kV

Secondary Voltages 208Y/120, 240 Delta 480Y/277,600Y/347480 Delta, 600 Delta, 2400Y, 2400 Delta240Y/1394160Y, 4160 Delta

(Note: For specific combinations of kVA sizes with primary and secondaryvoltages, refer to the Medium Voltage Transformer Specification Guide.)

Basic Impulse Levels 2.4 kV-20 kV BIL 5.0 kV-30 kV BIL 60 kV BIL

15.0 kV-60 kV BIL 95 kV BIL25.0 kV-125 kV BIL

Winding Temperature Rise 150C 115C, 80C

Impedance 5.75% for 500 kVA and Above Available uponrequest

Insulation System 220C

Sound Level Per NEMA ST20 Standard Lower levels

Conductor Material Aluminum Copper

Forced Air Rating Increases kVA by 33 1/3%

Taps (2) 2 1/2% above and below Primary Voltage(2400 V and above)

Accessories Lightning Arresters (intermediate or station class require

air terminal chamber or must be mounted in switchgearsection)

Provisions for future forced air (FFA)

Forced air cooling (FA)

Electronic temperature indicators

Air terminal chambers (ATC) on primary or secondary Strip heaters

Key interlock

Indoor or outdoor enclosure

TENV enclosures

UL Listing

Special Applications UL Listed K-rated units for non-linear loads

Special ambients or altitudes

Low sound levels

50 Hz requirements

Electrostatic shielding

Unusual Service Conditions - need to identify and advisefield sales or manufacturing plant

Damaging fumes or vapors, excessive abrasive or metal-lic dust, steam, salt spray, moisture or dripping water,corrosive atmosphere, or any other special conditions

Abnormal vibration or shock Unusual transportation or storage conditions

Unusual space limitations

Unusual operating duty, frequency of operation, poorwave form, unbalanced voltage, or special insulationrequirements

Seismic requirements

For additional information see Square D catalog section Class7420/7425.

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POWER CAST Transformers Vacuum CastResin Coils

General DescriptionRatings

Item Standard OptionalkVA Sizes 225-10000

Primary Voltage Classes 2.4 kV to 34.5 kV

Secondary Voltages 208Y/120, 480Y/277,480 Delta, 2.4 Delta 4.16Y, 4.16 Delta4.8 kV Delta

(Note: For specific combinations of kVA sizes with primary and secondary volt-ages, refer to the Medium Voltage Transformer Specification Guide.)

Basic Impulse Levels 2.4 kV-45 kV BIL 60 kV BIL5.0 kV-60 kV BIL 75 kV BIL

15.0 kV-95 kV BIL 110 kV BIL25.0 kV-125 kV BIL 150 kV BIL34.5 kV-150 kV BIL 200 kV BIL

Winding Temperature Rise 80C 115C

Impedance 5.75% 7.5% depend ing Availab le uponon HV, BIL, LV rat ings request

Insulation System 150C 185C


Conductor Material Copper

Forced Air Rating:500 - 750 kVA Increases kVA by 33 1/3%

1000 - 5000 kVA Increases kVA by 50%

Taps (2) 2 1/2% above and below Primary Voltage

Optional Accessories Lightning arresters (available with air terminal chamber

onlyotherwise these must be mounted in switchgearsection)


Forced air cooling (FA) Electronic temperature indicators (Three Phase)

Air terminal chambers (ATC) on primary or secondary

Key interlocks


Special Applications Special ambients or altitudes

Low sound levels

50 Hz requirements



Damaging fumes or vapors, excessive abrasive or metallic dust, steam, salt spray, moisture or dripping watercorrosive atmosphere, or any other special conditions



Unusual operating duty, frequency of operation, poowave form, unbalanced voltage, or special insulationrequirements


For additional information see Square D catalog section Class7310.

13


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UNI-CAST Transformers Primary Coil Vacuum Cast Resin; Secondary Coil VPI


Item Standard OptionalkVA Sizes 500-10,000

Primary Voltage Classes 2.4 kV to 15 kV

Secondary Voltages 208Y/120, 480Y/277,480 Delta, 240 Delta

(Note: For specific combinations of kVA sizes with primary and secondaryvoltages, refer to the Medium Voltage Transformer Specification Guide.)

Basic Impulse Levels 2.4 kV-45 kV BIL5.0 kV-60 kV BIL Consult Factory

15.0 kV-95 kV BIL

Winding Temperature Rise 100C 80C

Impedance 5.75% 7.5% depending upon Available uponKVA, HV BIL and LV rating request

Insulation System 185C


Conductor Material Aluminum Copper

Forced Air Rating Increases kVA by 33 1/3%

Taps (2) 2 1/2% above and below Primary Voltage

Optional Accessories Lightning arresters (available with air terminal chamber

onlyotherwise these must be mounted in theswitchgear section)



Electronic temperature indicators (Single Phase or ThreePhase)

Air terminal chambers (ATC) on primary or secondary

Key interlocks



Low sound levels

50 Hz requirements



Damaging fumes or vapors, excessive abrasive or metal-lic dust, steam salt spray, moisture or dripping water, cor-rosive atmosphere, or any other special conditions



Unusual operating duty, frequency of operation, poorwave form, unbalanced voltage, or special insulationrequirements


14


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Liquid-filled Transformers


Item Standard Optional

kVA Sizes 225-10000

Primary Voltage Classes2.5 kV, 5 kV 15 kV, 25 kV, 34.5 kV

208Y/120 500-1500 kVA Secondary Voltages 480Y/277, 480 Delta 500-3750 kVA

2.4 kV, 4.16 kV, 4.8 kV 225-10000 kVA

(Note: For specific combinations of kVA sizes with primary and secondary volt-ages, refer to the Medium Voltage Transformer Specification Guide.)

2.5 kV- 45 kV BIL 60 kV BIL5.0 kV- 60 kV BIL 75 kV BIL

Basic Impulse 15.0 kV- 95 kV BIL 110 kV BILLevels 25.0 kV-125 kV BIL 150 kV BIL

34.5 kV-150 kV BIL 200 kV BIL

WindingTemperature Rise 65C 55/65C

Coolant Mineral oil Silicone,RTEmp

Impedance 4.0%-8.0% depending on kVA and LV ratings

Sound Level Per NEMA TR-1 Standard Lower levels

Conductor Material Aluminum/Copper (Sq D Option) Copper

Forced Air Rating: Increases kVA by 15% 225-2000 kVA Increases kVA by 25% 2500-10000 kVA

2-2 1/2% above and below 4-2 1/2% fullTaps primary voltage capacity

primary voltage

Standard Features Deenergized tap changer, padlockable

One inch upper filling plug and filter press connection

One inch drain valve with sampler

Dial type thermometer without alarm contacts Liquid level gauge without alarm contacts

Pressure/vacuum gauge, with bleeder connection,without alarm contacts

Provisions for jacking and lifting

Pressure relief valve

Optional Accessories Alarm contacts for accessory gauges

Sudden pressure relay (with or without seal-in relay)

Key interlock on tap changers

Provisions for mounting grounding resistors

Instrument transformers (low voltage air terminalchamber required)

Surge arresters (high voltage air terminal chamberrequired-otherwise these must be mounted inswitchgear section)



Air terminal chambers on primary or secondary


50 Hz requirements

Unusual Service Conditions - need to identify and advise

field sales or manufacturing plant Damaging fumes or vapors, excessive abrasive or metallic dust, steam, salt spray, moisture or dripping watercorrosive atmosphere, or any other special conditions

Abnormal vibration or shock

Unusual transportation or storage conditions


For additional information, see Square D catalog section Class7420.

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Model 5/6 Motor Control Centers

Can be utilized on substation secondary with QEDswitchboard main section

For system voltages to 600 V

Horizontal main bus and vertical distribution bus andwireways standard

600 A, 800 A, 1200 A, 1600 A, or 2000 A main bus rating

NEMA Type 1, 1 Gasketed

Main lugs 600 A - 2000 A

Main Circuit Breaker 110 A - 2000 A (high interruptingcircuit breakers standard)

Main Fusible Switch 200 A - 2000 A (Class R or L fusesstandard

NEMA wiring Classes 1 and 2, Types A, B, and Cavailable

Full-Voltage Non-Reversing, Full Voltage Reversing, TwoSpeed and Reduced-Voltage Autotransformer combina-tion starter units

Branch Feeder Circuit Breakers 15 A-1200 A (FA, KA, LA,MA, PA frames)

Fusible Switch feeder units 30 A -1200 A (class H, R orL fuse clips depending upon current rating)

Empty mounting units, equipped spaces, distributiontransformers and NQOD and NEHB panelboards available

Model 5 Standard Features

Al Power Bus

Steel Vertical Ground Bus

Any of the structural features from the Model 6 StandardFeatures List may be purchased A la Carte

Model 6 Standard Features

Cu Power Bus

Cu Vertical Ground Bus

Vertical Wireway Barrier

Bus Barrier Closing Shutters

White Unit Interiors

MCC Buckets have easy-removal feature

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Major Components Information

Busway Systems

I-LINE/I-LINE II Busway

I-LINEplug-in available from 225 A-600 A with aluminumor copper conductors

I-LINEII plug-in and feeder styles available 800 A-4000Awith aluminum conductors, to 5000 A with copper con-ductors

Available up to 600 V

3 and 4-pole full neutral configuration

Sandwich construction to provide superior voltage dropcharacteristics

Totally enclosed housing

Compact size

Durable electro-deposition epoxy paint finish Bus bars insulated using class B rated (130C vendor

certified) materials

Plated Bus bars

Dielectric testing 7000 Vdc standard

One bolt joints with VISI-TITEtorque-indicating bolts(clamping force of over 4000 lbs.) for ratings less than2000 A. For ratings higher than 2000 A, two or three boltsare used.

EZ JOINT PACKremovable single bolt joint packageavailable (with VISI-TITEtorque-indicating bolts)

I-LINEII uses one set of universal tie channels, speedinginstallation

I-LINEII includes internal fire barriers

Ratings of 200,000 RMS Symmetrical available for4000 A and 5000 A feeder busway

Outdoor busway available

Universal fittings for maximum layout flexibility

I-LINEII Busway includes integral (50%) ground bus

100 A Plug-In Busway

Totally enclosed plug-in busway

100 A full load rating

3 phase, 4W 480 V or 3 phase, 3W 600 V

Round, electrical grade aluminum or copper conductors

Optional 50% ground bus

Molded phenolic insulators between bus bars

Short-circuit ratings up to 14,000 A symmetrical

High-pressure spring-type connectors at each joint

Wrap-around type hangers (UL Listed in edgewismounting position with 10' hanger spacing) or C clamp(UL Listed in flatwise mounting position with buswayhung on 5' centers) hangers available

POWER-ZONEMetal-Enclosed Busway Available for indoor or outdoor use

Custom designed and manufactured

Available in the following configurations

Voltage Class Continuous Current Momentary KA ASYM

600 V 1200-4000 A 75, 100, 125

5 and 15 kv 1200-5000 A 40

Designed according to ANSI C37.23

Can be supplied with full round edge plated copper oplated aluminum bus bars

Insulation for the 5 kV-38 kV bus is fluidized bed epoxrated at 130C. 600 V bus bars are not jacketed

5 and 15 kV shipping split bus joints are insulated withremovable boots

Bus Supports for 600 V systems are fiberglass. 5 and15 kV supports are molded using a UL Listed glass reinforced polyester. 38 kV supports are porcelain.

Aluminum housing is standard

Painted or stainles steel available as optional

Strip heaters are provided on outdoor construction

Structural supports are available

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Special Applications and Products

Type 36 Compact Sectional Unit Substation

General DescriptionCompact sectional load center unit substations permit easyhandling through existing doors and hallways. They can beinstalled in locations where physical space limitations will notpermit the installation of a conventional load center unit sub-station. Besides having less depth, the compact designrequires front access only. The transformers rectangular barrelwound core and coil and enclosure design requires no ventila-tion from the rear (ventilated rear panels are provided).

Depth of unit substation 36" (Max.)

Indoor enclosure ONLY

ANSI 49 paint

Requires front access only

Incoming Primary Load Interrupter Switchgear - HVL UL Listed (If Required)

600 A Switch

Blown Fuse Indication

Cable connection to transformer

Keylock optional

Unfused or Current-Limiting Fuses Only

Shunt Trip

Two cables per phase maximum

Distribution class surge arresters (optional)

No instrument transformers or metering

12" top pullbox required (top or bottom entry)

VPI Power-Dry Transformer RatingsItem Standard Optional

kVA Sizes 225-750 Primary Voltage Classes 600 V to 15.0 kV

Secondary Voltages 208Y/120, 480Y/277,480 Delta,600 V Delta -10 kV BIL

Basic Impulse Levels 5.0 kV-30 kV BIL 15.0 kV-60 kV BIL

Winding Temperature Rise 150C 115C (to 750 kVA)80C (to 500 kVA)

UL Listed

225 kVA-750 kVA(750 kVA at 150C rise only)

Secondary Main and Distribution Sections - QED-2POWER-STYLE Switchboard

Main Section

Fixed mounted main device available up to 2500amperes

Main devices:Molded case circuit breakers - M, N, and P framesFusible switch - BOLT-LOCStored-energy electronic trip c ircuit breakers - SE


Top or bottom feed

UL Labeled

Keylock optional

Distribution Section

Available in:

I-LINE distribution section - group mounted I-LINEcircuit breakersQMB distribution section - group mounted QMB/QMJswitches

80% or 100% rated circuit breakers

Single or double row construction for I-LINE circuitbreakers

Copper or aluminum bus

UL Labeled

Provisions for future extension

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Special Applications and Products

Model III POWER-ZONE

Package Unit Substation

General Application Data

Model III POWER-ZONE package unit substations incorpo-rateinto one pre-assembled, unitized modulean HVLswitch, dry-type transformer and molded-case circuit breakerdistribution section. All components are manufactured bySquare D. The complete package unit substation is engineered

and tested as one integral unit by Square D.The Model III is only 36" (914 mm) deep and 85" (2159 mm)high, so it will pass through most existing doorways withoutstructural renovation to the building in which it is installed. Totalweight is less than 8,000 pounds (3629 kg) and the footprintoccupies less than 22 square feet (2.04 m2) of floorspace, for afloor-loading of less than 365 lb./sq. ft . (1782 kg/m2).

The air intake is located at the front bottom; the exhaust is ontop of the transformer section, so the unit can be installedagainst a wall or in a corner without alteration or derating.

Model III POWER-ZONE package unit substations are ideal fornew installations in existing buildings as well as for spot zonedistribution in new construction.

Substations are normally shipped as two units, split betweenthe incoming line section and the transformer/low voltage dis-tribution sections. Upon request, they can be provided in onesection on a common base.

Model III POWER-ZONE package unit substations are avail-able in sizes from 75 kVA through 500 kVA with three phaseprimary voltages of 2400 volts through 13,800 volts. Whenequipped with fan cooling, ratings as high as 667 kVA are avail-able, AA/FA. Secondary voltages of 600 V delta, 480 V delta,480Y/227, 208Y/120 and 240 V delta are available. The trans-

former is built with 220C insulation. 150C rise is availablethrough 500 kVA. 115C and 80C rise are available up to300 kVA. ANSI 49 or ANSI 61 paint is available.

The secondary circuit breaker distribution section is equippedwith an I-LINE distribution panelboard which accepts the

time-tested and widely acclaimed plug-on I-LINE family omolded case circuit breakers. Branch circuit breakers as smalas 15 A single pole FY or FA frame with 1.5" (38 mm) mountingheight, to as large as 1200 A NA frame 3-pole breakers with 15inches (381 mm) mounting height may be installed. ME/NEframe electronic trip breakers and I-LIMITER high interruptingcapacity current limiting circuit breakers may also be used. Thissection provides 81" (2057 mm) of circuit breaker mountingheight.

Model III substations allow faster and easier installations. Theicompact design allows a greater choice of installation locations. Package substations provide lower cost systemsthrough:

Service Continuity Substations located at each load

area isolate outages and allow faster trouble-shooting. Expansion Substations divide a system into isolatedsections which are unaffected by the addition of newload areas.

Efficient Performance Shorter secondary feederslower power loss and provide better voltage regulation.

Lower Power Cost Power is purchased at loweprimary rates.

Lower Equipment Costs High voltage cable is lessexpensive than high-current, low voltage feeder circuitsSmaller, less expensive molded case breakers offset theextra transformer cost.

For additional information including layouts, see Bulletin D1-NClass 6010/02, or contact Square D/Sorgel in Milwaukee.

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Typical Key Interlock Schemes

Introduction

Key interlocks are an integral part of many unit substations.Square D Company offers completely coordinated key inter-lock systems. For convenience, 14 commonly used key inter-lock schemes are described in the following pages. If one or

more of the key interlock schemes shown is to be included witha Square D unit substation, please mention the method numberwhen the order is placed. Other key interlock schemes areavailable please contact your local Square D field sales office.

Method 1.

Function: To prevent the operation of disconnect switch Awhen breaker B is closed.

To prevent the opening of the fuse compartment door when thedisconnect switch A is closed.

The breaker, fuse compartment door and disconnect switchare shown in closed positions. Key A-1 is held in breaker inter-lock and key A-2 is held in disconnect interlock.

To service the breaker:

1. Open the breaker.

2. Turn key A-1 in L-O interlock on breaker to lock breakeropen. Key A-1 is now free.

3. Insert key A-1 in L-O-C interlock on disconnecting switchand turn to unlock. Key A-1 is now held.

4. Open disconnect.

5. Turn key A-1 in L-O-C interlock on disconnect switch tolock open. Key A-1 is now free.

6. Return key A-1 to breaker interlock and unlock for oper-

ation of the breaker during servicing.Reverse the sequence to restore service.

To open the fuse compartment door:

1. Proceed from operations 1 through 4 above.

2. Turn key A-2 in L-O interlock on the disconnect switch tolock open. The key A-2 is now free.

3. Insert the key A-2 in L-C interlock on the fuse compart-

ment door and turn to unlock. The key A-2 is now held.4. Open the fuse compartment door.

Reverse the sequence to restore service.

Method 2.

Function: To prevent the operation of disconnect switch Awhen breakers B, C, D and E are closed. (Breakers may beopened in any sequence.)

Disconnect A and breakers B, C, D and E are shown in theclosed position. The key A-1 is held in Transfer interlock. KeysA-2, A-3, A-4, and A-5 are held in the interlocks on Breaker B,C, D, and E.

1. Open breakers B, C, D and E.

2. Turn the key in L-O interlock on each Breaker B, C, D andE to lock the breakers open. The keys A-2, A-3, A-4, A-5are now free.

3. Insert keys A-2, A-3, A-4 and A-5 in the transfer interlock.

4. Turn key A-1 in the Transfer interlock. Key A-1 is now free.(Keys A-2, A-3, A-4 and A-5 are now held.)

5. Insert key A-1 in L-O-C interlock on disconnect A and turnto unlock. Key A-1 is now held.

6. Open disconnect A.

7. Turn key A-1 in L-O-C interlock on disconnect A to lockopen. Key A-1 is now free.

8. Insert key A-1 in Transfer interlock and turn. Key A-1 isnow held. Keys A-2, A-3, A-4 and A-5 are now free.

9. Return keys A-2, A-3, A-4 and A-5, as desired, to breaker

interlocks and unlock for operation during servicing.


L-O

A-2

L-C

L-O

A-1

LOC

E

A

E

E

EA 2

A 1

A 2

L-O

A

B

A 1

A 3

L-O

C

A 4

L-O

D

A 5

L-O

E

A-1

A-5

LOC

W

A-4W

A-3W

A-2W

E

T

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Method 3.

Function: To prevent the operation of disconnect switch Awhen breakers B, C, D and E are closed.

Note: Breakers must be opened in prearranged sequence.

(Electrical circuit is equivalent of Method 2.)Disconnect A and Breakers B, C, D and E are shown in theclosed positions. Key A-1 is held in the breaker B interlock. KeyA-2 is held in the breaker C interlock, key A-3 is held in thebreaker D interlock and key A-4 is held in the breaker E inter-lock. Key A-5 is held free in the breaker E interlock or is retainedby the supervisor.

1. Obtain key A-5 from supervisor.

2. Open breaker E.

3. Insert key A-5 in the L-O interlock on breaker E and turnKey A-5 to lock open. Key A-5 is now held. Key A-4 isnow free.

4. Open breaker D.

5. Insert key A-4 in L-O interlock on breaker D and turn keyA-3 to lock the breaker open. Key A-4 is now held. KeyA-3 is now free.

6. Open breaker C.

7. Insert key A-3 in L-O interlock on breaker C and turn keyA-2 to lock the breaker open. Key A-3 is now held. KeyA-2 is now free.

8. Open breaker B.

9. Insert key A-2 in L-O interlock on breaker B and turn keyA-1 to lock the breaker open. Key A-2 is now held. KeyA-1 is now free.

10. Insert key A-1 in L-O-C interlock on disconnect A and

turn to unlock. Key A-1 is now held.11. Open the disconnect.

12. Turn the key A-1 in L-O-C interlock on disconnect A tolock it open. Key A-1 is now free.

13. Insert key A-1 in L-O interlock on breaker B and turn itto unlock. Key A-1 is now held and key A-2 is free.

14. Breaker A may now be operated for servicing.

15. Insert key A-2 in L-O interlock on breaker C and turn itto unlock. Key A-2 is now held, and key A-3 is free.

16. Breaker C may now be operated for servicing.

17. Insert key A-3 in L-O interlock on breaker D and turn it

to unlock. Key A-3 is now held and key A-4 is free.18. Breaker D may now be operated for servicing.

19. Insert key A-4 in L-O interlock on breaker E and turn it tounlock. Key A-4 is now held and the supervisors keyA-5 is free.

20. Breaker E may now be operated for servicing.


Method 4.

Function: To prevent the paralleling of lines A and B.

Single load, fed from either source.

To prevent the operation of disconnect switches A and B whenthe breaker C is closed.

Breaker C and the d isconnect A are shown in the closed posi-tion. Disconnect B is shown in the open position. The key A-1is held in the breaker C interlock. The key A-2 is held in the dis-connect A, L-O interlock.


1. Open breaker C.

2. Turn key A-1 in the L-O interlock on the breaker to lock itopen. Key A-1 is now free.

3. Insert key A-1 in the L-O-C interlock on disconnect A andturn it to unlock. Key A-1 is now held.

4. Open disconnect switch A.

5. Turn key A-1 in the L-O-C interlock on disconnect A tolock it open. Key A-1 is now free.

6. Return key A-1 to the breaker interlock and unlock it foroperation of the breaker during servicing.

To transfer the load from line A to line B:

1. Open breaker C.

2. Turn key A-1 in the L-O interlock on the breaker to lockit open. Key A-1 is now free.

3. Insert key A-1 in the L-O-C interlock on disconnect Aand turn it to unlock. Key A-1 is now held.

4. Open disconnect switch A.


A 2

L-O

A 1

L-O

A-1

LOC

A-1

LOC

A-2

L-O

C

A

A

B

B

A-2

L-O

A

B

A-3

L-O

C

A-4

L-O

D

A-5

L-O

E

A 1 A 2 A 3 A 4

A 5

A-1

LOC

E

W

E

W

E

W

E

W

SupervisoryKey

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5. Turn key A-1 in the L-O-C interlock and key A-2 in L-Ointerlock on disconnect A to lock open. Keys A-1 andA-2 are now free.

6. Insert key A-1 in the L-O-C interlock on disconnect Band turn it to unlock. Key A-1 is now held.

7. Insert key A-2 in the L-O interlock on disconnect B andturn it to unlock. Key A-2 is now held.

8. Close disconnect switch B.

9. Turn key A-1 in the L-O-C interlock on disconnect B tolock it closed. Key A-1 is now free.

10. Insert key A-1 in the breaker interlock and turn it tounlock. The key A-1 is now held.

11. Close the breaker.

Reverse the sequence to restore service through line A.

Method 5.

Function: To prevent the paralleling of lines A and B.

Two loads, fed from either source (one tie-breaker).

To prevent the operation of disconnect switch D when breakerA is closed.

To prevent the operation of disconnect switch E when breakerB is closed.

The disconnect switches D and E and breakers A and B areclosed. Breaker A is closed to supply the load M. Breaker B isclosed to supply the load N. Tie-Breaker C is open. Keys A-1and A-2 are held in the interlock on breaker A. Keys A-1 andA-3 are held in the interlock on breaker B. The Tie-Breaker Ccannot be closed until either breaker A or B is locked open.

To transfer load N to breaker A, proceed as follows:

1. Open breaker B.

2. Turn key A-1 in L-O interlock on breaker B to lock it open.Keys A-1 and A-3 are now free.

3. Insert key A-1 in L-O interlock on tie-breaker C and turnit to unlock. Key A-1 is now held.

4. Close tie-breaker C.

Reverse the sequence to restore service through breaker B.Load M can be supplied through breaker B in a similar manner.

To service Breaker B, proceed as follows:

1. Open breaker B.

2. Turn key A-1 in the L-O interlock on breaker B to lock itopen. Keys A-1 and A-3 are now free.

3. Insert key A-3 in the L-O-C interlock on disconnect E andturn it to unlock. Key A-3 is now held.

4. Open disconnect E.

5. Turn key A-3 in the L-O-C interlock on disconnect E tolock it open. Key A-3 is now free.

6. Return key A-3 to the L-O interlock on breaker B andunlock it for operation of the breaker during servicing.


Breaker A can be serviced in a similar manner.

Method 6.

Function: To prevent paralleling of lines A and B.

Two loads, fed from either source (one tie-breaker).

To prevent the operation of disconnect switch D when breakerA is closed.

To prevent the operation of disconnect switch E when breakerB is closed.

To prevent the opening of the fuse compartment door when theassociated disconnects D or E and breakers A and B areclosed.

Disconnect switch D and breaker A are closed to supply loadM. Disconnect switch E and breaker B are closed to supplyload N. Tie-breaker C is open. Keys A-1 and A-2 are held in theinterlock on breaker A. Key A-3 is held in the L-O interlock ondisconnect D. Keys A-1 and A-4 are held in the interlock on the

breaker B. Key A-5 is held in the L-O interlock on the discon-nect E. The tie-breaker C cannot be closed until either breakerA or B is locked open.

A-2 A-4

LOC

A-3

A-2

L-O

A

D

A

A-1

L-O

C

L-O

A 1

A 2

A 3

L-O LOC

A 5

E

E

L-O

A 1

A 4

E

E

L-C

A-5

A-4

L-C

E

E

E

E

M

B

E

B

N

A-2

LOC

A-1

L-O

A-3

LOC

C

A B

A

D

B

E

L-O

A 1

A 2

L-O

A 1

A 3

E

E

E

E

M N

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To transfer load N to breaker A, proceed as follows:

1. Open breaker B.


3. Insert key A-1 in L-O interlock on t ie-breaker C and turn

it to unlock. Key A-1 is now held.4. Close tie-breaker C.

Reverse the sequence to restore service through breaker B.Load M can be supplied through breaker B in a similar manner.

To service breaker B, proceed as follows:

1. Open breaker B.


3. Insert key A-4 in the L-O-C interlock on disconnect E andturn it to unlock. Key A-4 is now held.


5. Turn key A-4 in L-O-C interlock on disconnect E to lock itopen. Key A-4 is now free.

6. Return key A-4 to L-O interlock on breaker B and unlockit for operation of breaker during servicing.

Reverse the sequence to restore service. Breaker A can be ser-viced in a similar manner.

To enter the fuse compartment on line B, proceed as follows:

1. Open breaker B.


3. Insert key A-4 in L-O-C interlock on disconnect E and turnto unlock. Key A-4 is now held.


5. Turn key A-4 in L-O-C interlock on disconnect E to lock itopen. Key A-4 is now free.

6. Turn key A-5 in L-O interlock on disconnect E to lock itopen. Key A-5 is now free.

7. Insert keys A-4 and A-5 in L-C interlock on the fuse com-partment door and turn it to unlock. Keys A-4 and A-5 arenow held.

8. Open the fuse compartment door.


The fuse compartment on line A can be entered in a similarmanner.

Method 7.

Function: To prevent the paralleling of three power sourcesthrough a common tie bus not normally in service.

To permit the feeding of any load bus from a second power

source through the tie bus.

Breakers A, B, and C are normally c losed. Breakers D, E, and Fare normally open. Under normal conditions, key A-1 and A-5are held in breaker A interlock, keys A-2 and A-5 are held inbreaker B interlock and keys A-3 and A-5 are held in breaker Cinterlock.To transfer the load from line No. 1 to line No. 2 or lineNo. 3 through tie bus, proceed as follows:

1. Open breaker A.

2. Turn key A-1 in L-O interlock on breaker A to lock thebreaker open. Keys A-1 and A-5 are now free.

3. Insert key A-1 in L-O interlock on breaker D and turn tounlock. Key A-1 is now held.

4. Close breaker D.

5. Insert key A-5 in L-O interlock on either breaker E or F andturn to unlock. Key A-5 is now held.

6. Close breaker E or F (whichever is selected).

Reverse the sequence to restore load to line No. 1.

To transfer the load from lines No. 1 and No. 2 to line No. 3through tie bus, proceed as follows:

1. Close breaker D as per steps 1 to 4 above.

2. Open breaker B.

3. Turn key A-2 in L-O interlock on breaker B to lock thebreaker open. Keys A-2 and A-5 are now free.

4. Insert key A-2 in L-O interlock on breaker E and turn tounlock. Key A-2 is now held.

5. Close breaker E.

6. Insert one of the A-5 keys from either breaker A or B inL-O interlock on breaker F and turn to unlock. Key A-5 isnow held.

7. Close breaker F.

Reverse the sequence to restore load to lines No. 1 and No. 2

Method 8.Function: To prevent the paralleling of three power sourcesthrough a common tie bus not normally in service.

To permit the feeding of any load bus from a second powesource through the tie bus only when authorized by supervisor

To permit only one power source to supply all three load busesthrough the tie bus only when authorized by supervisor.


L-O

A 1

A 5

L-O

A-5

A-1

A E

E

D

Line 1

Load Bus

Tie Bus

L-O

A 2

A 5

L-O

A-5

A-2

B E

E

E

Line 2

L-O

A 3

A 5

L-O

A-5

A-3

C E

E

F

Line 3

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Breakers A, B, and C are normally closed. Breakers D, E and Fare normally open. Under normal conditions Key A-1 is held inbreaker A interlock, Key A-2 is held in breaker B interlock, andKey A-3 is held in breaker C interlock. Key A-5 is retained bythe supervisor.To transfer the load from line No. 1 to line No. 2 or lines No. 3through tie bus, proceed as follows:

1. Open breaker A.

2. Turn key A-1 in L-O interlock on breaker A to lock thebreaker open. Key A-1 is now free.

3. Insert key A-1 in L-O interlock on breaker D and turn tounlock. Key A-1 is now held.

4. Close breaker D.

5. Insert supervisors key A-5 (only one A-5 is available) in

L-O interlock on either breaker E or F and turn to unlock.Key A-5 is now held.

6. Close breaker E or F (whichever is selected).

Reverse sequence to restore the load to line No. 1.

To transfer the load from lines No. 1 and No. 2 to line No. 3through tie bus, proceed as follows:

1. Close breaker D as per steps 1 to 4 above.

2. Open breaker B.

3. Turn key A-2 in L-O interlock on breaker B to lock thebreaker open. Key A-2 is now free.

4. Insert key A-2 in L-O interlock on breaker E and turn tounlock. Key A-2 is now held.

5. Close breaker E.

6. Insert supervisors key A-5 in L-O interlock on breaker Fand turn key to unlock. Key A-5 is now held.

7. Close breaker F.

Reverse the sequence to restore the load to lines No. 1 andNo. 2.

Method 9.

Function: To prevent the paralleling of incoming primarysources, lines 1 and 2, through primary tie bus disconnect.

To prevent the operation (open or closed) of disconnects underload.

It permits one power source to supply both loads through tie bus.

Under normal conditions, breakers A and B are closed, discon-nects C and D are locked closed, and tie bus disconnect T islocked open. Keys A-1 are held in L-O interlock on breaker A andL-C interlock on tie bus disconnect T. Keys A-2 are held in L-Ointerlock on disconnects C and D. Keys A-3 are held in L-O inter-lock on breaker B and L-C interlock on tie bus disconnect T. KeysA-4 (free keys) are shown removably held in the L-C interlocks ondisconnects C and D.

To transfer load No. 1 from line 1 to line 2 through bus tie dis-connect T, proceed as follows:

1. Open breaker A.

2. Turn key A-1 in L-O interlock on breaker A to lock open.Key A-1 is now free.

3. Insert key A-1 in L-C interlock on disconnect C and turnto unlock. Keys A-1 and A-4 are now held.

4. Open disconnect C.

5. Turn key A-2 in L-O interlock on disconnect C to lockopen. Key A-2 is now free.

6. Insert keys A-2 and free key A-4 (from L-C interlock ondisconnect D) in L-O interlock on bus tie disconnect Tand turn to unlock. Keys A-2 and A-4 are now held.

7. Close bus tie disconnect T.

8. Turn key A-3 in L-C interlock on disconnect T to lockclosed. Keys A-1 and A-3 are now free.

9. Insert key A-1 in L-O interlock on breaker A and turn tounlock. Key A-1 is now held.

10. Close breaker A.

L-O

A-5

A-1

A

D

Line 1

Load Bus

Tie Bus

L-O

A-5

A-2

B

E

Line 2

L-O

A-5

A-3

C

F

Line 3

L-O

A 1

L-O

A 2

A 5

L-O

A 3

SupervisoryKey

L-C

A-1

A 4

L-C

A-3

A 4

L-C

A 1

A 3

A 2 E

E

E

E

L-O

A-2

A-4E

E

E

E

Line 1

Load 1

L-O

A 2

L-O

A 1

L-O

A 3

L-O

C D

A

Line 2

Load 2

B

T

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Reverse the sequence to restore load No. 1 to line 1.

To transfer load No. 2 from line 2 to line 1 through the bus tiedisconnect T, proceed in a similar manner.

Method 10.

Function: To prevent the paralleling of incoming primarysources, lines 1 and 2, through the primary tie bus disconnector the secondary tie bus breaker.

To prevent the operation (open or closed) of the disconnectsunder load.

It permits one power source to supply both loads through eitherthe primary or secondary tie bus.

Under normal conditions, breakers A and B are closed, breaker Cis locked open, disconnects D and E are locked closed, and tie dis-connect T is locked open. Keys A-1 are held in the L-O interlockon breaker A and the L-C interlock on primary tie bus disconnectT. Keys A-2 are held in the L-O interlocks on disconnects D and E.Keys A-3 are held in the L-O interlock on breaker B, and L-C inter-lock on primary tie bus disconnect T. Keys A-4 (free keys) areshown removably held in the L-C interlocks on disconnects D andE. Keys A-5 are held in the L-O interlocks on breakers A and B.

To transfer load No. 1 from line 1 to line 2 through primary bustie disconnect T:

1. Open breaker A.

2. Turn key A-1 in the L-O interlock on breaker A to lockopen. Keys A-1 and A-5 are now free.

3. Insert key A-1 and free key A-4 in the L-O interlock ondisconnect D and turn to unlock. Keys A-1 and A-4 arenow held.

4. Open disconnect D.

5. Turn key A-2 in L-O interlock on disconnect D to lockopen. Key A-2 is now free.

6. Insert key A-2 and free key A-4 (from the L-C interlockon disconnect E) in the L-O interlock on primary bus tiedisconnect T and turn to unlock. Keys A-2 and A-4 arenow held.


8. Turn key A-3 in the L-C interlock on bus tie disconnect Tto lock closed. Keys A-1 and A-3 are now removable.

9. Insert Key A-1 in the L-O interlock on breaker A and turnto unlock. Key A-1 is now held.

10. Close breaker A.

Reverse this procedure to restore service to line 1.

Load No. 2 can be supplied from No. 1 through the primary bustie in a similar manner.

To transfer load No. 1 from line 1 to line 2 through secondary tiebreaker C:

1. Open breaker A.

2. Turn key A-1 in the L-O interlock on breaker A to lockopen. Keys A-1 and A-5 are now removable.

3. Insert key A-5 in the L-O interlock on tie breaker C andturn to unlock. Key A-5 is now held.

4. Cost tie breaker C.

Reverse this procedure to restore service on line 1.

Load No. 2 can be supplied from line No. 1 through the sec-ondary t ie breaker C in a similar manner.

Method 11.

L-O

A

C

A 1

B 1

E

E

E

A 2

L-C

A-3

L-C

B-3B 2

L-O

L-O

A 2

LOC

A-4

L O

T-1

B 2

L-O

B-4

LOC

Line 1

F

T

K

Load 1

B

D

G

Line 2

H

L

Load 2

L C

T 1

A 3

A 1

A 4

E

EL-O

A-1

A-2

E

EL-C

B-1

B-2

T 1

B 3

E

EL-C

E

EL-O

E

EL-O

B 1

B 4

E

EL-O

A-5

L-O

L-O

L-C

A C B

L-O

L-C L-O

A 1

A 5

L-O

A 3

A 5

E

E

E

E

Load 1 Load 2

A 1

A 3 A-2

A-4E

E

E

E

A 4A 2

L-O

A 2

A-1

L-C

A 4

A-3

E

E

E

E

Line 1

ED

Line 2

T

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Function: To prevent the paralleling of incoming primarysources, lines 1 and 2.

To prevent the operation (open or closed) of the disconnectsunder load. (Permits transformer primary disconnects (K & L) toopen and close the transformer magnetizing current.*)

Permits isolating breakers for servicing.

Permits one power source to supply both loads through tie bus.

Under normal conditions, breakers A, B, C, and D are closed, dis-connects E, F, G, H, K, and L are locked closed, and bus tie dis-connect T is locked open. Keys A-1 are held in the L-O interlockon breaker C, and the L-C interlock on bus tie disconnect T. KeysA-2 are held in the L-O interlocks on breaker A and disconnectE. Key A-3 is held in the L-O interlock on disconnect F. Key A-4is held in the L-O interlock on breaker C. Keys B-1 are held in theL-O interlock on breaker D, and the L-C interlock on bus tie dis-connect T. Keys B-2 are held in the L-O interlocks on breaker Band disconnect G. Key B-3 is held in the L-O interlock on dis-connect H. Key B-4 is held in the L-O interlock on breaker D. KeysT-1 are held in the L-O interlocks on disconnects F and H.

To transfer load No. 1 from line 1 to line 2 through bus tie dis-connect T:

1. Open breaker A.

2. Turn key A-2 in the L-O interlock on breaker A to lock thebreaker open. Key A-2 is now free.

3. Open breaker C.

4. Turn key A-4 in the L-O interlock breaker C to lock thebreaker open. Keys A-1 and A-4 are now free.

5. Insert key A-2 from the L-O interlock on breaker A and keyA-1 from the L-O interlock on breaker C, in the L-C inter-lock on disconnect F and turn to unlock. Keys A-1 and A-2 are now held.

6. Open disconnect F.

7. Turn key A-3 in the L-O interlock on disconnect F to lockopen. Keys A-3 and T-1 are now free.

8. Insert key T-1 in the L-O interlock on bus tie disconnectT and turn to unlock. Key T-1 is now held.


10. Turn key B-1 in the L-C interlock on bus tie disconnectT to lock closed. Keys A-1 and B-1 are now free.

11. Insert key A-1 in the L-O interlock on breaker C and turnto unlock. Keys A-1 and A-4 are now held.

12. Close breaker C.

Reverse the sequence to restore load No. 1 to line 1.

To transfer load No. 2 from line 2 to line 1, proceed in a similar

manner.

To isolate breaker A for servicing:

1. Proceed from normal position with operations as in 1through 7 above.

2. Insert key A-3 in the L-C interlock on disconnect E andturn to unlock. Key A-3 is now held.


4. Turn key A-2 in the L-O interlock on disconnect E to lockopen. Key A-3 is now free.

5. Return key A-2 to breaker A and unlock for operationduring servicing.


To isolate breaker B for servic ing, proceed in a similar manner.

To isolate breaker C for servicing, proceed as follows:

1. Open breaker C.

2. Turn key A-4 in the L-O interlock on breaker C to lockbreaker open. Keys A-1 and A-4 are now free.

3. Insert key A-4 in the L-O-C interlock on disconnect K andturn to unlock. Key A-4 is now held.

4. Open disconnect K.

5. Turn key A-4 in the L-O-C interlock on disconnect K tolock disconnect open. Key A-4 is now free.

6. Return key A-4 to breaker C and unlock for operationduring servicing.


To isolate breaker D for servicing, proceed in a similar manner.

*To prevent primary disconnects (K & L) from opening magne-tizing current only, additional interlocks should be provided fordisconnects K & L.

Method 12.

Function: To prevent paralleling lines A and B requires drop-ping load when shifting from one source to another.

To prevent closing both interrupter switch A and B at the sametime (permits both interrupter switches to be opened at the

same time).To prevent operation (open or closed) of either interrupterswitch when breaker is closed.

Permits the breaker to be serviced and operated while bothinterrupter switches are locked open.

A-1EE

A 2

LOC

A-1EE

A-2

LOCL-O

A 1

L-O

L-OA B

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The Breaker and Interrupter A are shown in closed position.Interrupter B is shown in the open position. Key A-1 is held inbreaker interlock. Key A-2 is held in interrupter A interlock.


1. Open the breaker.

2. Turn key A-1 in the L-O interlock on breaker to lockbreaker open. Key A-1 is now free.

3. Insert key A-1 in the L-O-C interlock on interrupter A andturn to unlock. Key A-1 is now held.

4. Open interrupter A.

5. Turn key A-1 in L-O-C interlock on interrupter A to lockopen. Key A-1 is now free.

6. Return key A-1 to breaker interlock and unlock for oper-ation of breaker during servicing.


To transfer load from interrupter A to interrupter B.

1. Proceed from normal positions with operations as in 1through 4 above.

2. Turn key A-1 in L-O-C interlock and key A-2 in L-O interlockon interrupter A to lock open. Keys A-1 and A-2 are nowfree.

3. Insert key A-1 in L-O-C interlock and key A-2 in L-O inter-lock on interrupter B and turn to unlock. Keys A-1 andA-2 are now held.

4. Close interrupter B.

5. Turn key A-1 in L-O-C interlock on interrupter B to lockclosed. Key A-1 is free and key A-2 is held.

6. Insert key A-1 in L-O interlock on breaker and turn tounlock. Key A-1 is now held.

7. Close breaker.

Reverse the sequence to restore service through interrupter A.

Method 13.

Function: To prevent operation (closed, open or closed) of interrupter switch when breaker is closed.

Permits the breaker to be serviced and operated while the interrupter switch is locked open.

The Breaker and Interrupter are shown in closed positionconnected to line B. Key A-1 is held in breaker interlock.

To service breaker:

1. Open breaker.


3. Insert key A-1 in L-C-O-C interlock on interrupter and turnto unlock. Key A-1 is now held.

4. Open interrupter.

5. Turn key A-1 in L-C-O-C interlock on interrupter lockopen. Key A-1 is now free.

6. Return key A-1 to breaker interlock and unlock for operation of breaker during servicing.

Reverse the sequence to restore service through either line Aor line B.

To transfer interrupter from line B to line A:

1. Proceed from normal position with operations as in steps1, 2, and 3 above.

2. Open interrupter switch from line B and connect to line A

3. Turn key A-1 in L-C-O-C interlock on interrupter to lockclosed. Key A-1 is now free.

4. Insert key A-1 in L-O interlock on breaker and turn tounlock. Key A-1 is now held.

5. Close breaker.


EA 1

L-O

EA-1

LCOC

A B

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Method 14.

Function: To prevent operation (closed, open or closed) of theinterrupter switch when breaker is closed.

To prevent opening the fuse compartment door when the inter-rupter switch A is closed.

To prevent closing the interrupter switch until fuse compart-ment door is locked closed.

Permits the breaker to be serviced and operated while the inter-rupter switch is locked open.

The breaker, fuse compartment door, and interrupter are shownin closed position, connected to line B. Key A-1 is held inbreaker interlock and key A-2 is held in interrupter interlock.

To service breaker:

1. Open breaker.


3. Insert key A-1 in L-C-O-C interlock on interrupter and turnto unlock. Key A-1 is now held.

4. Open interrupter.

5. Turn key A-1 in L-C-O-C interlock on interrupter to open.Key A-1 is now free.

6. Return key A-1 to breaker interlock and unlock for oper-ation of breaker during servicing.


To open fuse compartment door:

1. Proceed from normal position with operations as in steps1 through 4 above.

2. Turn key A-2 in L-O interlock on interrupter to lock open.Key A-2 is now free.

3. Insert key A-2 in L-C interlock on fuse compartment doorand turn to unlock. Key A-2 is now held.

4. Open fuse compartment door.


To transfer interrupter from line B to line A:

1. Proceed from normal position with operations as in steps1, 2, and 3 above.

2. Open interrupter switch from line B and connect to line A.

3. Turn key A-1 in L-C-O-C interlock on interrupter to lockclosed. Key A-1 is now free.

4. Insert key A-1 in L-O interlock on breaker and turn to

unlock. Key A-1 is now held.5. Close breaker.

Reverse the sequence to restore service through line B.

28


EA 1

L-O

EA 2

L-O

EA-1

LCOC

A B

A-2

L-C

E

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Layout Information Primary Section

HVL/ VISI-VAC Switchgear - Power Dry TransformerPrimary Connection

5 and 15 kV

Approx. Weights: 1200lbs./545kg indoor 1400lbs./636kg outdoor

Notes :

1. Transformer dimensions vary depending upon kVA, BIL and temperature rise ratings. See TRANSFORMER section for complete table of transformer dimensions.

2. Extra 1.5" in height (91.5" vs 90") if 1.5" base channel is included in HVL or VISI-VAC.

3. Units are front-aligned (.5" difference in indoor units). Units are rear-aligned if transformer depth is 54" for indoor units, 60" for outdoor units.

34.00864

2.0051

2.0051

2.0051

Top View

Front View

6.00152

6.00152 6.00

152

1.7544

94.002388Min.

(See Note 1

38.00965

19.00483

97.502477

64.001626

63.501613Min.

(See Not

28.00711

27.75705

OutdoorIndoor

CL

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

15260.001524

60.001524Min.

(See Note

26.00660

26.00660

CL

Front View

94.002388Min.

(See Note 1)

38.00965

90.002286

or

91.502324

(See Note 2)

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

15254.50

1384

54.001372Min.

(See Note 1)

10.63270

10.13660

CL

34.00864

2.0051

Top View

4.00102

6.00152 6.00

1522.00x4.00

51 102Control Conduit

Area

2.00 x 4.0051 102

Control ConduitArea

2.00 x 4.0051 102

Control ConduitArea

2.00x4.0051 102

Control ConduitArea

54.501384

54.001372Min.

(See Note 1)

10.63270

10.13660

CL

DANGERHIGH

VOLTAGE

(See Note 3)

(See Note 3)

(See Note 3)

(See Note 3)

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HVL/VISI-VACSwitchgear POWER-CASTand UNI-CAST TransformersPrimary Connection

5 and 15 kV


Notes :

1. Transformer dimensions vary depending upon kVA, BIL and temperature rise ratings. See TRANSFORMER section for a table of transformer dimensions. If connection is required to be a hard-

bus connection, the minimum depths shown here will increase, and the factory must be consulted for the transformer dimensions.

2. Extra 1.5" in height (91.5" vs 90") if 1.5" base channel is included in HVL or VISI-VAC.

3. Indoor units are front-aligned (.5 difference at front), outdoor units are not front-aligned.

54.001372Min.

(See Note 1)

34.00864

2.0051

2.0051

2.0051

Top View

Front View

6.00152

6.00152 6.00

152

38.00965

19.00483

97.502477

64.001626

54.001372Min.

(See Note 1)

28.00711

19.75502

OutdoorIndoor

CL

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

152

60.001524

26.00660

19.75502

6.25159

CL

Front View

38.00965

90.002286

or

91.502324

(See Note 2)

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

15254.501384

10.63270

10.13660

CL

34.00864

2.0051

Top View

4.00102

6.00152 6.00

15254.501384

54.001372Min.

(See Note 1)

10.63270

10.13660

CL

DANGERHIGH

VOLTAGE

94.002388Min.

(See Note 1)

94.002388Min.

(See Note 1)

(See Note 3)

2.00x4.0051 102

Control ConduitArea

2.00 x 4.0051 102

Control ConduitArea

2.00 x 4.0051 102

Control Conduit

Area

2.00 x 4.0051 102

Control ConduitArea

(See Note 3)

(See Note 3)

54.001372Min.

(See Note 1)

(See Note 3)

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HVL/VISI-VACSwitchgear Liquid-filled Transformer Primary Connection to 3750 kVA (see note 5)

5 and 15 kV


Notes :

1. Liquid- filled transformer standard enclosure dimensions are given in the TRANSFORMER section. They are applicable only for mineral-oil units under certain conditions (see TRANSFORMER

section for details).

2. Extra 1.5" in height (91.5" vs 90") if 1.5" base channel is included in HVL or VISI/VAC.

3. Units are not necessarily front or rear aligned.

4. Transition section height is 65" if transformer is up to 2500 kVA, 85" if transformer is over 2500 kVA.

5. If transformer is over 3750 kVA, variations to the dimensions shown here will be necessary.


H(See Note 1)

19.00483

65.00 or 85.001651 2159Transition Section Height(See Note 4)

38.00965

D1D1

D2D2

38.00965

Indoor

Front View

38.00965

90.002286

or

91.502324

(See Note 2)

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

15254.50

1384CL

34.008642.0051

Top View

4.00102

6.00152 6.00

15254.50

1384

20.50521

20.50521

CL

DANGERHIGH

VOLTAGE

34.00864 2.00512.0051

2.0051

Top View

Front View

6.00152

6.00152 6.00

152

H(See Note

38.00965 19.00483

97.502477

64.001626

28.00711

38.00965

Outdoor

CL

34.00864

2.0051

Floor Plan

4.00102

6.00152 6.00

15260.001524

26.00660

CL

65.00 or 85.001651 2159

Transition Section Height(See Note 4)

38.00965

2.00 x 4.0051 102

Control ConduitArea

D1

2.00 x 4.0051 102

Control ConduitArea

2.00 x 4.0051 102

Control ConduitArea

2.00 x 4.0051 102

Control ConduitArea

(See Notes 1, 3, 5)(See Notes 1, 3, 5)

(See Notes 1, 3, 5)

D1

(See Notes 1, 3, 5)

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Me tal-Clad Switchgear POWER-DRY, POWER-CASTand UNI-CAST Transformers PrimaryConnection

Approx. Weights (less breakers): 2200lbs./999kg indoor 2700lbs./1226kg outdoor1200 A breaker: 360lbs./163kg 2000 A breaker: 410lbs./186kg 3000 A breaker: 480lbs./218kg

Notes :

1. Transformer dimensions vary depending upon kVA, BIL and temperature rise ratings. See TRANSFORMER section for a complete table of transformer dimensions.

2. Units will be rear-aligned when transformers have the depths shown. For transformers with larger depths, transformer will protrude in rear.

20.005088.00203

Floor Plan

20.00508

96.932462

51.3013031.70

43

.103

8.00203

5.90150

6.30160

54.001372

(Power-Cast, Uni-Cast)or

60.001524Min.

(Power-Dry)(See Note 1)

41.181046

(Fixed)(Power-Cast, Uni-Cast)

or35.18

894(Fixed)

(Power-Dry)

CL

ControlConduitArea

109.102771

51.301303

54.001372

(Power-Cast, Uni-Cast)or

60.001524Min.

(Power-Dry)(See Note 1)

49.181249

(Fixed)(Power-Cast, Uni-Cast)

or

43.181097

(Fixed)(Power-Dry)

CL

Top View

Front View

36.00914

22.00559

3.0076

108.502756

Outdoor

94.002388Min.

(See Note 1)

Indoor

18.00457

9.00229

Top View

Front View

3.5089

9.00229

9.00229

1.0025

8.00203

92.002337

(With Door)

95.002413

36.00914

22.00559

3.0076

54.001372Min.

(See Note 1)

37.00940

(Fixed)

94.002388Min.

(See Note 1)

2.0051

1.7551

8.00203

10.12257

CL

ControlConduitArea

18.00457

9.00229

Floor Plan

3.5089

9.00229

9.00229

1.0025

91.002311

54.001372Min.

(See Note 1)

47.1211972.0051

.205

8.00203

2.5064

3.5089

1.0025

37.00940

(Fixed)

CL

ControlConduitArea

(See Note 2)

(See Note 2) (See Note 2)

(See Note 2)

Roof Overhang

5 kV and 15 kV

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Metal-Clad Switchgear Liquid-Filled Transformer Primary Connection to 3 75 0 kVA (see note 3)

Approx. Weights (less breakers): 2200lbs./999kg indoor 2700lbs./1226kg outdoor1200 A breaker: 360lbs./163kg 2000 A breaker: 410lbs./186kg 3000 A breaker: 480lbs./218kgNotes:

1. Liquid- filled transformer standard enclosure dimensions are given in the TRANSFORMER section. They are applicable only for mineral-oil units under certain conditions (see TRANSFORMER

section for details).

2. Flange height is 65" if transformer is up to 2500 kVA, 85" if transformer is over 2500 kVA.

3. If transformer is over 3750 kVA, variations to the dimensions shown here will be necessary.

4. Units are not necessarily front or rear aligned. Transformer radiators may extend behind switchgear.

20.00508

8.00203

Floor Plan

6.30160

20.00508

96.932462

49.181249

45.001143

1.7043

.103

8.00203

5.90150

CL

109.102771

49.181249

8.00203

CL

Top View

Front View

36.00914

22.00559

108.502756

Outdoor

H(See Note 1)

22.00559

3.0076

D1

D2

D1(See Note 1)

D1(See Note

38.00965

38.00965

38.00965

38.00965

Front View

36.00914

95.002413

Indoor

18.00457

9.00229

Top View

3.5089

9.00229

9.00229

1.0025

92.002337

(With Door)

45.0011432.00

51

1.7544

8.00203

1.0025

3.5089

CL

18.00457

9.00229

Floor Plan

3.5089

9.00229

9.00229

1.0025

91.002311

2.0051

.205

8.00203

2.5064

CL

D1

D2

65.00 or 85.001651 2159Flange Height(See Note 2)

(See

3.0076

65.00 or 81651 Flange He(See Note

(See Note 1)

(See Note

Radiators MayExtend Behind

Switchgear.(See Note 4)

Radiators MayExtend Behind

Switchgear.(See Note 4)

Roof Overhang

5 kV and 15 kV

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34


HVL Switchgear POWER-DRY and POWER-CAST Transformers Primary Connection


Notes :

1. Please consult the manufacturing location for 25 kV transformer enclosure dimensions.

2. Units are neither front nor rear aligned.

40.001016

5.00127

Top View

Front View

6.00152

6.00152 6.00

152

94.002388Min.

(See Note 1)

48.001219

24.00610

127.003226

90.002286

66.001676Min.

(See Note 1)32.75

832

8.00203

40.751035

Outdoor

CL

40.001016

4.00102

Floor Plan

4.00102

6.00152 6.00

15286.0021

45pnbpzl

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