43100-019-01 tab. aisl 2f

1995 Square D All Rights Reserved

Hospital Isolated Power SystemsIsolation Panels

Class 4800

Instruction Bulletin

43100-019-01A

October 1996

Replaces

43100-019-01

dated 3/92

Hospital Isolated Power Systems—Isolation Panels Bulletin No. 43100-019-01AOctober 1996

2 1996 Square D All Rights Reserved

Square D Company3300 Medalist DriveOshkosh, WI 54901

ISO-GARD, Square D and are Registered Trademarks of Square D Company.

1996 Square D Company, all rights reserved. This bulletin may not be copied in whole or inpart, or transferred to any other media, without the written permission of Square D Company.

Electrical equipment should be serviced only by qualified electrical maintenance personnel.No responsibility is assumed by Square D for any consequences arising out of the use ofthis material.

Bulletin No. 43100-019-01A Hospital Isolated Power System Panels—Isolation PanelsOctober 1996


CONTENTS SECTION 1—INTRODUCTION .......................................................................................... 1

GENERAL DESCRIPTION.................................................................................................. 1

Backbox Package ......................................................................................................... 1

Interior Package ........................................................................................................... 1

Subpanel .................................................................................................................. 1

Transformers ............................................................................................................. 1

Circuit Breakers ........................................................................................................ 2

Line Isolation Monitors (LIM) .................................................................................... 2

Trim Package................................................................................................................ 2

Accessory Package ...................................................................................................... 2

SECTION 2—SAFETY PRECAUTIONS ........................................................................... 3

SECTION 3—RECEIVING, HANDLING AND STORAGE ................................................. 3

RECEIVING......................................................................................................................... 3

HANDLING .......................................................................................................................... 3

STORAGE ........................................................................................................................... 3

SECTION 4—INSTALLATION ........................................................................................... 4

SUPPORT REQUIREMENTS ............................................................................................. 4

PREPARATION AND ASSEMBLY ....................................................................................... 4

Backbox Mounting .................................................................................................... 4–7

Assembly ................................................................................................................ 8–10

TRANSFORMER INSTALLATION ..................................................................................... 11

Vibration Pads ............................................................................................................ 11

Transformer Installation .............................................................................................. 11

Transformer Electrical Connections ........................................................................... 11

ELECTRICAL CONNECTIONS................................................................................... 12–17

Wire Quality Requirements ........................................................................................ 12

Grounding .................................................................................................................. 12

FINAL INSPECTION AND TESTING ................................................................................ 17

SECTION 5—OPERATION .............................................................................................. 18

SECTION 6—MAINTENANCE ........................................................................................ 19

APPENDIX A—OPTIONAL LIM INDICATOR ALARM ................................................... 20

ALARM INSTALLATION .................................................................................................... 20

Panel-Mounted Indicator Alarm.................................................................................. 20

Remote Indicator Alarm ............................................................................................. 20

ALARM OPERATION ........................................................................................................ 21

APPENDIX B—OPTIONAL EQUIPMENT ....................................................................... 20

i

Table of Contents



Figures

1. OR and X-ray Panels—Backbox ..................................................................................... 5

2. ICU/CCU Panel—Backbox .............................................................................................. 6

3. Duplex Panel—Backbox .................................................................................................. 7

4. 3-Phase Panel—Backbox ................................................................................................ 7

5. Dual Output Voltage Panel—Backbox ............................................................................. 7

6. OR and ICU/CCU Panels 3.0 and 5.0 kVA—Assembly ................................................... 8

7. OR and ICU/CCU Panels 7.5 and 10.0 kVA—Assembly ................................................. 8

8. Duplex Panel—Assembly ................................................................................................ 9

9. X-ray Panel—Assembly ................................................................................................... 9

10. 3-Phase Panel—Assembly .......................................................................................... 10

11. Dual Output Voltage Panel—Assembly ....................................................................... 10

12. Vibration Pad Detail ..................................................................................................... 11

13. OR Panel—Electrical Connections .............................................................................. 13

14. ICU/CCU Panel—Electrical Connections .................................................................... 14

15. X-ray Panel—Electrical Connections ........................................................................... 15

16. 3-Phase Panel—Electrical Connections ...................................................................... 16

17. Dual Output Voltage Panel—Electrical Connections ................................................... 17

18. X-ray Panel Secondary Circuit Pushbutton Selectors ................................................. 18

19. IA-1C Remote Indicator Alarm .................................................................................... 20

20. Remote Indicator Alarm Wiring Diagram ..................................................................... 21

CONTENTS (cont.)

ii



Section 1—Introduction

SECTION 1—INTRODUCTION

This bulletin explains how to install, operate, and maintain Square D isolationpanels for hospital isolated power systems. The panel styles described in thisbulletin include:

• Operating room (OR) panels

• Intensive care unit and coronary care unit (ICU/CCU) panels, which have theadded feature of ground jacks and power receptacles.

• Duplex panels, which have two or more panels in the enclosure.

• Portable X-ray panels that supply power to portable or mobile X-ray units.

• 3-phase panels for specialized equipment such as 3-phase surgical lasers.

• Dual output voltage panels for special applications where the panels cansupply a single operating room with two different output voltagessimultaneously.

This document is for use by qualified electricians. Please refer to NationalElectric Code (NEC) Article 517, National Fire Protection Association (NFPA) 99,and other appropriate national and local codes.

GENERAL DESCRIPTION Except as noted, the specifications below are standard for the United States.Call or write Square D for more information about special equipment,modification, or substitutions. Make sure that all equipment conforms to localcodes and standards.

Backbox Package The backbox is 14-gauge steel. Flush mounting is standard, but surface mountingis available on request.

Interior PackageSubpanel The subpanel is a single component, which contains the prewired fixture plate

and a dead front panel.

Transformers The transformers for the OR, ICU/CCU, and duplex panels have ratings of 3, 5,7.5, and 10 kVA. The primary voltage of the transformer can range from 100 to600 V, depending upon equipment requirements. The secondary voltage of thetransformer can range from 100 to 240 V.

The transformers of the portable X-ray and 3-phase panels have 15 and 25 kVAratings. The primary voltage of the transformer ranges from 208 to 600 V. Forsingle-phase equipment, the secondary voltage can range from 208 to 240 V,depending on equipment requirements. For 3-phase equipment, the secondaryvoltage of the transformer is 208 V.

The 3 and 5 kVA transformer are factory-installed in the OR and ICU/CCUinteriors. For all other models, the transformers are shipped separately and mustbe installed at the location. For transformer part numbers, see the Square D Digestor the Square D handbook 4800HB9301, Hospital Isolated Power Systems.



Section 1—Introduction

Circuit Breakers The primary circuit breaker on all panels is sized in accordance withNFPA 70-1996, Article 450-3(b)(1). The number of installed secondary circuitbreakers varies with the panel style:

• OR, ICU/CCU, and duplex panels have eight factory-installed 20 A secondarycircuit breakers, but are field expandable to 16 circuit breakers.

• 3-phase panels can accommodate up to nine three-pole, 60 A secondarycircuit breakers.

• Portable X-ray panels serve a maximum of eight secondary circuits.A pushbutton switch in the panel selects which secondary circuitreceives power.

• Dual output voltage panels have eight secondary circuit breakers for the120 V output voltage and one secondary circuit breaker for the 240 V.They also have room for one additional 208/240 V secondary circuit breaker,and the 120 V output voltage panelboard can be field expandable to16 circuit breakers.

Line Isolation Monitor (LIM) Each panel comes with one or more ISO-GARD® line isolation monitors (LIM)manufactured by Square D. The LIM continuously monitors the impedance ofthe total isolated, ungrounded system to ground.

Note: The normal LIM hazard index is 5 milliamperes (mA). However, thehazard index can be switched to 2 mA to meet CSA certification.

Trim Package The trim is 14-gauge stainless steel. The front cover has a hinged door with lockand key. Flush-mounted models have a one inch flange on all sides for coveringuneven edges of the wall opening into which the panel is installed. Flush-mounted duplex panels are designed for mounting at the floor level and do nothave a flange on the bottom. Surface-mounted models do not have a flange.

Accessory Package Optional accessories may be included in the panel design. See Appendix A and Bfor information on accessories.



SECTION 2—SAFETY PRECAUTIONS

SECTION 3—RECEIVING, HANDLING AND STORAGE

RECEIVING The backbox may arrive first to allow electrical contractors to begin rough-inwork. Before filing claims for shortages, check the details of the order.

Upon receipt, inspect the equipment. If any damage or rough handling isevident, file a damage claim with the carrier immediately. Notify the localSquare D field sales office.

HANDLING Isolated power system panels weigh several hundred pounds. To reduce the riskof personal injury or equipment damage, use equipment suitable for lifting andmoving heavy loads.

STORAGE Do not store this equipment in damp or dusty conditions.

DANGERHAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

• Only qualified personnel should install, operate, service, or maintain thisequipment.

• Successful equipment operation depends on proper handling, installation,and maintenance. Neglecting fundamental installation or maintenancerequirements will result in personal injury and damage to electricalequipment or other property.

• Before installing the equipment, disconnect all sources of electrical power.Assume that all circuits are live until they have been completely de-energized,tested, grounded, and tagged. Consider all sources of power, including thepossibility of backfeeding.

• Before replacing covers or closing doors, carefully inspect the panel area fortools and objects left in the equipment.

• For safety, have at least two qualified individuals present during installation.

Failure to follow these instructions will result in death or serious injury.

Section 2—Safety Precautions



Section 4—Installation

SECTION 4—INSTALLATION

SUPPORT REQUIREMENTS Before installing the panel, make sure the structural support can bear the weightof the equipment. Minimum load bearing requirements are as follows:

• OR unit—200 lb (441 kg)

• ICU/CCU unit — 250 lb (551 kg)

• Duplex unit— 495 lb (1091 kg)

• Portable X-ray and 3-phase units—600 lb (1323 kg)

• Dual output voltage unit— 575 lb (1265 kg)

PREPARATION ANDASSEMBLY

The general steps to install the panel and its components are as follows:

1. Mount the backbox. Refer to figures 1–5 on pages 5–7 for backbox dimensions.

2. Install the interior package into the backbox and any accessories. Refer tofigures 6–11 on pages 8–10.

Note: If the panel is fitted for any accessory, remove the closure plate on thepanel trim to install the accessory.

3. Install the transformer (if it is 7.5 kVA and larger). See Transformer Installationand Connections on page 11.

3. Make the electrical connections to the loads being served, such as thereceptacles, surgical lights, X-ray film viewer, and so forth. See ElectricalConnections on page 12 and refer to figures 13–17 on pages 13–17.

4. Install the deadfront panel and stainless steel trim panel.

Backbox Mounting Shaded areas in figures 1–5 show possible space for routing conduit and fittings.No knockouts or holes for conduit are provided in the backbox. The installer isresponsible for drilling additional holes for non-standard mounting and conduitentrances. Front and rear backbox dimensions are the same.

On flush-mounted units, the four 9/16 in (14 mm) mounting holes are located inthe backbox, two at the top and two at the bottom. Install the backbox even withthe finished wall or recessed no more than 1/4 inch. Do not allow backbox toprotrude past the finished wall.

On surface-mounted models, all four 9/16 in (14 mm) mounting holes arelocated in the rear of the enclosure box.

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

Knockouts for additional circuit breakers are available for X-raypanels, 3-phase panels, and other applications requiring 208 or 240 V.Before adding circuit breakers, contact an electrical consultant unlessdirected by the consulting/specifying engineer.

Failure to observe this precaution will result in death, severepersonal injury, or equipment damage.

DANGER



Backbox Mounting (cont.)

Figure 1: OR and X-ray Panels—Backbox

35.00889

24.00610

22.00559

8.00203

5.00127

5.00127

10.00254

7.00179

1.5038

33.00838

OptionalAccessories

Circuit BreakerPanel

Line IsolationMonitor

14 Gauge Stainless SteelHinged Door with Lock and Key

Transformer

Shaded areas denotepossible conduitentrance(4) .562 Dia. Holes

14(2 Top, 2 BottomFor Mounting)

35.00889

24.00610

24.00610

8.00203

6.00152

6.00152

11.00279

7.00179

1.5038

35.00889

OptionalAccessories

Circuit BreakerPanel


14 Gauge Stainless SteelHinged Door with Lock and Key

Transformer

Shaded areas denotepossible conduit entrance

(4) .562 Dia. Holes 14(2 Top, 2 BottomFor Mounting)

3 and 5 kVASurface Mounted

42.001067

29.00737

27.00686

12.00305

5.00127

5.00127

7.00179

1.5038

40.001016

OptionalAccessories

SecondaryBreakers


14 GaugeStainless Steel

Hinged Door with Lock and Key

Transformer

Shaded areas denotepossible conduit entrance(4) .562 Dia. Holes


16.00406

PrimaryBreaker

29.00737

29.00686

12.00305

6.00127

7.00179

1.5038

42.001067

OptionalAccessories

SecondaryBreakers


14 GaugeStainless Steel

Hinged Door withLock and Key

Transformer

Shaded areas denotepossible conduit entranc(4) .562 Dia. Holes


PrimaryBreaker

42.001067

17.001016

6.00127

3 and 5 kVAFlush Mounted

7.5 through 25 kVAFlush Mounted

7.5 through 25 kVASurface Mounted




Transformer


(4) .562 Dia. Holes 14(2 Top, 2 Bottom For Mounting)

Optional Accessories

Circuit Breaker Panel

Line Isolation Monitor


Power Lock Receptacles 20 AmpHospital Use Only (8)

14-Gauge Stainless SteelTrim Panel

Ground Jacks 30 Amp (6)

7.00178

1.5038

24.00610

44.001118

44.001118

8.00203

24.00610

11.00279

6.00152

6.00152

Figure 2: ICU/CCU Panel—Backbox

3 and 5 kVAFlush Mounted

3 and 5 kVASurface Mounted

Transformer




Hinged Door withLock and Key

14 Gauge Stainless SteelTrim Panel



Power Lock Receptacles20 Amp Hospital Use Only (8)7.00

178


1.5038

27.00686

49.001245

51.001295

12.00635

29.00737

16.00406

5.00127

5.00127

3.0076

Transformer





Hinged Door WithLock and Key

Power Lock Receptacles20 Amp Hospital Use Only (8)14 Gauge Stainless Steel

Panel Trim



7.00178

1.5038

29.00737

51.001295

51.001295

12.00635

29.00737

17.00432

6.00152

6.00152

4.00102

Transformer


(4) .562 Dia. Holes 14(2 Top, 2 Bottom for Mounting)





Power Lock Receptacles 20 AmpHospital Use Only (8)14-Gauge Stainless Steel

Trim Panel


7.00178

1.5038

22.00559

42.001067

44.001118

8.00203

24.00610

10.00254

5.00127

5.00127

7.5 through 25 kVASurface Mounted

7.5 through 25 kVA Flush Mounted


BackboxMounting (cont.)



30.0762

30.0762

72.01829

52.01321

8.0203

30.0762

30.0762

12.0305

52.0132172.0

1829

Shaded areasdenote possibleconduit entrance

Flush Mounted3 and 5 kVA

Figure 5: Dual Output Voltage Panel—Backbox

Flush Mounted15 and 25 kVA

Surface Mounted15 and 25 kVA

Figure 3: Duplex Panel—Backbox

Figure 4: 3-Phase Panel—Backbox

6.001276.00

127

34.00864

12.00305

20.00508

62.001519

42.001067

6.00152

6.00152

36.00914

21.00533

64.001626

43.001092

12.00305

6.00152

6.00152

Shaded areas denotepossible conduitentrance

Flush Mounted Surface Mounted


16.0406

1.538

(4) 0.562 14

Dia. Holes For Mounting2 Top, 2 Bottom

58.01473

40.01016

16.0406

60.01524

42.01067

1.538

(4) 0.562 14

Dia. Holes For Mounting2 Top, 2 Bottom

Shaded areasdenote possibleconduit entrance

BackboxMounting (cont.)

Flush Mounted7.5 and 10 kVA




Assembly

Trim HardwareTrim PackageInterior PackageBackbox Package Accessory Package

(Optional)

Front ViewSide View

For flush-mounted,adjust receptaclemodule flush withfinished wall surface

On surface-mounted,adjust receptaclemodule flush with thebackbox flange.

Figure 6: OR and ICU/CCU Panels 3.0 and 5.0 kVA—Assembly

Trim Hardware

Trim PackageInterior PackageBackbox PackageAccessory Package

(Optional)

Front ViewSide View

Figure 7: OR and ICU/CCU Panels 7.5 and 10 kVA —Assembly




Assembly (cont.)

TrimHardware

Trim PackageInterior Package

Backbox Package

Accessory Package(Optional)

Front ViewSide View

AccessoryPackage

(Optional)

Trim Hardware

Trim PackageInterior PackageBackbox PackageAccessory Package

(Optional)

NAMEPLATE

Front ViewSide View

Figure 8: Duplex Panel —Assembly

Figure 9: X-ray Panel —Assembly




Assembly (cont.)

Trim Hardware

Trim PackageInterior PackageBackbox Package Accessory Package(Optional)

NAMEPLATE

Front ViewSide View

Figure 11: Dual Output Voltage Panel—Assembly

Figure 10: 3-Phase Panel—Assembly

Trim Hardware

Trim PackageInterior PackageBackbox Package

Accessory Package(Optional)

For flush-mounted,adjust receptaclemodule flush withfinished wall surface

On surface-mounted,adjust receptaclemodule flush with thebackbox flange.

Dead frontpanel

Front ViewSide View



TRANSFORMER Small transformers rated 3 or 5 kVA are installed onto the panel interiorINSTALLATION assembly at the factory. Transformers rated 7.5 kVA and larger must be installed

into the panel on location.

Vibration Pads The transformers are equipped with vibration pads to reduce vibration anddampen sound caused by transformer vibration. Before shipping, transformersrated at 3 and 5 kVA are securely bolted to the subpanel with four retaining nuts.After installing the panel and its components, loosen the transformer retainingnuts to allow the rubber pads to absorb the vibration. If left compressed, the padsmay not dampen the noise.

On larger transformers 7.5 kVA and larger, the vibration pads are notfactory installed.

Transformer Installation Transformers that are 7.5 kVA or greater can weigh 150–500 lbs (330–1100 kg),and therefore require special handling. Depending on the panel design, thetransformers are installed either on the top half or the bottom half of thebackbox. Refer to the approval drawing for the specific location. If on the top,install the the transformers on the mounting angles with nuts and bolts. If on thebottom, install the transformers over the studs. Reuse the hardware from theshipping pallet.

Orient the transformers in the enclosure to allow the leads to extend out from thefront. This makes wiring to the primary circuit breaker and panelboard easier.

Transformer Electrical To make electrical connections to the transformer, refer to figures 13–17 onConnections pages 13–17.

Bolt

TransformerMounting Bar

Washer

VibrationPad

AngleWasher Lock

WasherRetainingNut

Figure 12: Vibration Pad Detail




ELECTRICAL The electrical connections required at the installation site are the following:CONNECTIONS 1. Connection of the main power feeder.

2. Connection of the reference ground bus to the ground lug on the terminal board.3. Connection of the remote indicator alarms to the LIM.Connect the secondary circuits to the contactors or to the panel board circuitbreakers in the subpanel. The contactor terminals are marked and fitted with alug to make connection easier. The consulting engineer specifies the wire size.The color coding for the secondary circuit is as follows:

Orange—isolated conductor No. 1Brown—isolated conductor No. 2Green—grounding groundYellow—isolated conductor No. 3 (3-phase)

For specific connections, refer to figures 13–17 on pages 13–17.

Wire Quality Square D recommends using cross-linked polyethylene wire with a dielectricRequirements constant of 3.5 or less. The most widely available wire for this application is low-

leakage wire #FR-XLP (VW-1 XHHW-2) from Rome Cable Corporation.

Note: Always specify a dielectric constant of 3.5 or less when purchasing wire.Avoid wires with a high carbon filler, which produce substantial leakage in anisolated power system. Make sure the wire is the appropriate size for transformerand meets local code requirements.

Grounding

Isolated power systems for healthcare facilities have special groundingrequirements to reduce electrical hazards to patients. Note that the referencegrounding point is not the grounded or neutral conductor. The ground bus in theisolation panel is the reference grounding point for the room as defined by NFPA 70,Article 517. Use only one conductor to connect the ground bus in the isolationpanel to the ground bar of facility’s main ground system. The main groundsystem is the distribution panel that feeds power to the isolation panel. Connectall green ground conductors from the equipment in the patient care area servedby the isolation panel to the ground bus in the isolation panel.

If more than one isolation panel is serving the area, connect both ground buses(reference grounding points) together with a large conductor, or see theconsulting engineer’s design, or contact Square D.

To ground transformers that are 7.5 kVA and larger, which are shippedseparately, connect the lead from the electrostatic shield of the transformer to theground bus in the isolation panel.


DANGERHAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION BECAUSE OFIMPROPER GROUNDING CONNECTIONS

Isolated power system panels for healthcare facilities are not grounded in thesame manner as many other types of electrical equipment. Before proceeding,read this section, study the wiring diagram and applicable codes, and thoroughlyunderstand the special grounding requirements for this type of system.

Failure to observe these precautions will result in death, severe personalinjury, or equipment damage.




DANGERELECTRICAL CONNECTIONS(cont.)

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

• Turn off all sources of power before beginning.

• Do not use wire pulling lubricant of any type on the secondary circuits.

• Conduit must be clean and dry.

• Maintain identical phasing throughout the installation.

Failure to observe these precautions will result in death, severe personalinjury, or equipment damage.

X2

H2

L2

L1

L3

Ground

Test

RS-232

12V Common

LIM Common

Meter

Figure 13: OR Panel—Electrical Connections

Primary MainCircuit Breaker

Electrostatic Shield Primary

SecondaryX1

H1

RemoteIndicator

Alarm LIM Terminal Board

(Space for 15,6-24 AWG including 1 Lug For 1/0)Ground Bus

1

3

212V Hazard

12V Safe

K1 Safe

K1 Common

K1 Hazard




ELECTRICAL CONNECTIONS(cont.)

Figure 14: ICU/ CCU Panel—Electrical Connections

1

3

2

L2

L1

L3

K1 Hazard

K1 Common

K1 Safe

12V Safe

12V Hazard

12V Common

LIM Common

Meter

Test

RS-232

Ground

LIM Terminal Board

X2X1

H1 H2

(Space for 15,6-24 AWG including 1 Lug For 1/0)Ground Bus

Primary

Secondary

Electrostatic Shield


Remote Indicator Alarm





1

3

2

L2

L1

L3

K1 Hazard

K1 Common

K1 Safe

12V Safe

12V Hazard

12V Common

LIM Common

Meter

Test

RS-232

Ground

LIM Terminal Board

ElectrostaticShield

X2

H1 H2

X1

A AX1 AX2

Customer LoadConnections

D3D2

D1

C3C2

C1

B3B2

B1

A3A2

A1

Station “A” shown; other stations wired similarlyNote: Maximum of 8 outlets

Do not exceed a length of 150 Feet (45.72 Meters) for branch circuit

For single-phase X-ray panels, connect the secondary circuits to the contactors in

the subpanel. The contactors are marked and fitted with a lug.

Control Transformer

Circuit Breaker1 AMP

Ground Bus(Space for 15,6-24 AWGincluding 1 Lug For 1/0)

8-Station InterlockSwitch W/Off Position

Figure 15: X-ray Panel—Electrical Connections

Secondary

Primary


RemoteIndicator Alarms

A, B, C, D

SecondaryCircuit Breaker





Figure 16: 3-Phase Panel—Electrical Connections

1

3

2

L2

L1

L3

K1 Hazard

K1 Common

K1 Safe

12V Safe

12V Hazard

LIM Common

Meter

Test

RS-232

Ground

LIM Terminal Board

X0

ElectrostaticShield

Primary MainCircuit Protection

Incoming Lines (Space for 15,6-24 AWG including 1 Lug For 1/0)Ground Bus

12V Common

Note: Use a 4-wire system to supply the primary.For 3-phase panels, connect the secondary circuits to the secondary branch circuit breakers.

X1X2

X3

(not grounded)



H1

X1 X2 X3 X4

H2


FINAL INSPECTION NFPA 99-1996 requires that isolated power systems be tested in accordance withAND TESTING 3-3.3.4.2 Isolated Power Systems, 3-3.3.2.1 Grounding Systems in Patient Care

Areas, 3-3.2.2.2 Impedance of Isolated Wiring, and 3-6.4.2 Record Keeping.

A Square D field service representative is available to perform all the testsrequired by NFPA 99. Contact your local field office to order this service.

LIM TerminalBoard

L1L2L3GroundRS-232TestMeter

12V Common12V Hazard12V SafeK1 SafeK1 CommonK1 Hazard

LIM Terminal Board

LIM Common

L1L2L3GroundRS-232

MeterLIM Common12V Common12V Hazard12V SafeK1 SafeK1 CommonK1 Hazard

Test

To Ground Bus

120 V Circuit

SecondaryMain

Panel is fieldexpandable to twosecondary branchcircuit breakers (QO)

208 V CircuitTo Ground Bus

Panel is field expandable to 16 secondarybranch circuit breakers (QO220)

SecondaryMain


Electrostatic Shield

Ground Bus(Space for 15,6-24 AWG including 1 Lug For 1/0)

Figure 17: Dual Output Voltage Panel—Electrical Connections


Primary

Secondary



SECTION 5—OPERATION

Operation of the line isolation monitor (LIM) is described in the instructionbulletin shipped with the LIM.

The X-ray isolation panel has a secondary circuit breaker that is connected to amaximum eight branch circuits. Only one secondary circuit can receive power ata time. The pushbuttons used to select a secondary circuit are located on theX-ray panel as shown in figure 18, or located in a convenient remote station suchas a nurses station.

To select a secondary circuit, press the pushbutton for that circuit. The redpushbutton at the bottom of the column clears all secondary circuits. No powerwill be delivered to a secondary circuit until the secondary breaker is closed.

Figure 18: X-ray Panel Secondary Circuit Pushbutton Selectors

PushbuttonSelectors

Section 5—Operation



Section 6—Maintenance

SECTION 6—MAINTENANCE

Conduct periodic testing in accordance with chapter 3 of NFPA 99 and anyapplicable local codes. Call the local Square D field office to obtain the servicesof a Square D factory technician.

The only parts necessary to stock are the fuses for the Square D line isolationmonitor and the lamps for the indicator alarms (see Appendix A), as follows:

• Wickmann type TR5-T, 250 mA fuses (Square D part number 25499-12821).

• Chicago Miniature No. 382 lamps for the HAZARD and SILENCE indicators.

• The SAFE LED indicator light is Starled part number MF636CC5-12VAC/40(Square D part number 43133-143-01).

Note: To return the LIM to the factory for any reason, first obtain anauthorization and a return material number from the local Square D field office.Pack the LIM carefully to avoid shipping damages.



APPENDIX A—OPTIONAL LIM INDICATOR ALARM

Panel-mounted indicator alarms are optional accessories that indicate thecondition of the line isolation monitor (LIM). Three models are available:ORIC-A, ORIC-AC, and ORIC-A5C. All three models have an audible alarm andindicator lights. The ORIC-AC has the added feature of a 2 mA microammeterand ORIC-A5C includes the 5 mA microammeter.

The remote indicator alarm (catalog number IA-1C) is mounted on a two-gangfaceplate. No backbox is provided with this unit; however, a two-gang deepmasonry box is available from your local Square D distributor.

ALARM INSTALLATION The indicator alarm terminal block is connected directly to the LIM terminalboard. Use #16 or #18 TW stranded insulated wire for all remote alarmconnections. Because the circuits are low voltage, the wires do not contributeleakage current to the system and low-leakage wire is not needed. However,600 V insulation is required for these wires.

The terminal board of the ISO-GARD LIM has a set of normally open andnormally closed dry contacts. The contact notation on the terminal boardindicates their position in the safe condition.

Panel-Mounted Indicator Alarm Connect the terminals labeled 1, 2, 3, Meter, and LIM Ground on the indicatoralarm terminal block to the corresponding terminals on the ISO-GARD LIMterminal board.

Note: Terminals labeled Meter and LIM Ground are not used on all units.

Remote Indicator Alarm On the terminal block of the remote indicator alarm, locate terminals1, 2, and 3. Connect those terminals to the terminal block points 1, 2, and 3 on theISO-GARD LIM terminal board in the isolation panel. Refer to figure 20 onpage 21.

When using more than one indicator alarm, wire the alarms in parallel, exceptfor the remote meters. Wire the remote meters in series.

Two-Gang Box (not supplied)

3-9/1690.4

3-13/1696.8

3-7/8105.2

3-9/3283.5

(4) 3/16 Dia. Holes for Mounting 4.6

IndicatorLights

4-5/8117.3

1-13/1646

4-5/8117.3

3-13/1696.8

Appendix A—Optional LIM Indicator Alarm

Figure 19: IA-1C Remote Indicator Alarm (mounted in separate two-gang masonry box)



Appendix A—Optional LIM Indicator Alarm

ALARM OPERATION SAFE IndicationThe green SAFE indicator light is on whenever the LIM to which it is connectedis energized and operating normally.

HAZARD IndicationWhen a fault occurs, the green SAFE indicator light goes out and the redHAZARD indicator light comes on. The audible alarm also activates. When thefault is corrected, the red HAZARD indicator light goes out, the audible alarmsilences, and the green SAFE indicator comes back on automatically. Theindicator alarm is ready to indicate the next fault.

Alarm SilencingTo silence the alarm during a fault, press the SAFE/SILENCE pushbutton. Theamber SILENCE indicator light comes on. The red HAZARD indicator lightremains on until the fault is corrected.

Figure 20: Remote Indicator Alarm Wiring Diagram

Notes:1. Connector Pin Functions:

1. L1 Input Vac2. L2 Input Vac3. L3 Input Vac4. Ground5. Blank6. RS-2327. Test8. Meter +9. LIM Common (Meter –)10.12 Vac Common11.12 Vac Hazard12.12 Vac Safe13.K1 Safe14.K1 Common15.K1 Hazard

2. LIM internal power supplyprovides 12 Vac (5 VA max.)to remote indicator alarms.Square D indicator alarm (catalog# IA-1C or # M5-IAI) is recommended.

3. Remote indicator alarms requiring12 VAC at more than 5VA, or requiringvoltage other than 12Vac, can bepowered by an independent powersupply connected as shown andswitched by LIM relay K1 contacts(1.5 A at 120 Vac max.)

05

10

+–

SafeCom

Hazard

SafeCom

HazardTest

ToGroundBus

L1L2L3GroundRS-232TestMeterLIM Common12V Common12V Hazard12V SafeK1 SafeK1 Common

K1 Hazard

1

2

3

Gray

White/Violet

Purple

White

White/Black

White

RedBlue

Black

Green

Yellow

Brown

Orange

{

{Power Source

Not Used on Single Phase

To IsolationTransformerSecondary


15-PinConnector

Remote Meter

RemoteIndicator AlarmSee Note 3

RemoteIndicator AlarmSee Note 2

Line Isolation MonitorTerminal Board

White/Red



Appendix B—Optional Equipment

APPENDIX B—OPTIONAL EQUIPMENT

Additional optional equipment is available, including the following:

• X-ray receptacles with indicator alarm

• Remote X-ray supervisory modules

• Power/ground modules

• Master grounding station module

• Ground cord assemblies

• Digital clocks, timers and accessories

For further details, see the Square D Digest or Handbook 4800HB9301,“Hospital Isolated Power Systems.”

43100-019-01 tab. aisl 2f

Documents