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7

10/09 AWB1230-1605

Effective October 2009

Operation and maintenance of

IZM low voltage air circuit breakers

 

MOELLER

 www.moeller.net/de/support 

Table 1.  IZM Circuit Breaker Ratings

Maximum amperes

Breaker Designation

i

cs

 = i

cu

 (ka

a

i

cw

 1s/3s (ka)

800

IZM93, IZM20

50

50/NA

800

IZM93, IZM20

65

65/40

800

IZM97, IZM32

40

40/NA

800

IZM97, IZM32

65

65/50

800

IZM97, IZM32

85

85/65

800

IZM97, IZM32

100 

c

85/65

1250

IZM93, IZM20

50

50/NA

1250

IZM93, IZM20

65

65/40

1250

IZM97, IZM32

40

40/NA

1250

IZM97, IZM32

65

65/50

1250

IZM97, IZM32

85

85/65

1250

IZM97, IZM32

100 

b

85/65

1600

IZM93, IZM20

50

50/NA

1600

IZM93, IZM20

65

65/40

1600

IZM97, IZM32

65

65/50

1600

IZM97, IZM32

85

85/65

1600

IZM97, IZM32

100 

b

85/65

2000

IZM93, IZM20

50

50/30

2000

IZM93, IZM20

65

65/40

2000

IZM97, IZM32

65

65/50

2000

IZM97, IZM32

85

85/65

2000

IZM97, IZM32

100 

c

85/65

2500

IZM97, IZM32

65

65/50

2500

IZM97, IZM32

85

85/65

2500

IZM97, IZM32

100 

b

85/65

3200

IZM97, IZM32

65

65/50

3200

IZM97, IZM32

85

85/65

3200

IZM97, IZM32

100 

b

100/65

4000

IZM97, IZME40 

c

65

4000

IZM97, IZME40 

c

85

4000

IZM99, IZM63 

c

100 

b

4000

IZM99, IZM63 

65

65/NA

4000

IZM99, IZM63 

85

85/65

4000

IZM99, IZM63

100 

100/85

5000

IZM99, IZM63

85

85/65

5000

IZM99, IZM63

100

100/85

6300

IZM99, IZM63

85

85/65

6300

IZM99, IZM63

100

100/85

All ratings at 690 Vac.

I

cu

 = I

cs

 = 85 kA at 690 Vac. I

cu

 = I

cs

 = 100 kA at 440 Vac.

Standard width breaker (not IZM99 or IZM63).

Figure 2. Typical IZM Nameplate

 Warning

TYPE iZM CirCUiT BrEakErS arE rOBUST anD arE PrOViDED WiTH 

SaFETY FEaTUrES. nEVErTHELESS, THE VOLTagES, CUrrEnTS, anD 

POWEr LEVELS aVaiLaBLE in anD arOUnD THiS EQUiPMEnT WHEn iT 

iS in OPEraTiOn arE EXTrEMELY DangErOUS anD COULD BE FaTaL. 

UnDEr nO CirCUMSTanCES SHOULD inTErLOCkS anD OTHEr SaFETY 

FEaTUrES BE MaDE inOPEraTiVE, aS THiS MaY rESULT in DEaTH, 

BODiLY inJUrY, Or PrOPErTY DaMagE.

Safe practices

To protect personnel associated with the installation, operation,  

and maintenance of this equipment, the following practices must  

be followed:

1. 

Only qualified electrical personnel familiar with the equipment, 

its operation, and the associated hazards should be permitted 

to work on the equipment. Additionally, only qualified personnel 

should be permitted to install or operate the equipment.

2. 

Always be certain that the primary and secondary circuits are  

de-energized or the circuit breaker is removed to a safe work 

location before attempting any maintenance.

3. 

For maximum safety, only insert a completely assembled breaker 

into an energized cell.

4. 

Always ensure that drawout circuit breakers are in one of their 

designed cell positions, such as CONNECT, TEST, DISCONNECT, 

or REMOVE. A circuit breaker permitted to remain in an 

intermediate position could result in control circuits being  

improperly connected, resulting in electrical failures.

(A) Low Voltage Air Circuit Breaker Family Name 

(B) Breaker Family Size in Amperes 

(C) Interrupting Capacity Rating 

(D) Factory Equipped Accessories

(A)

(B)

(C)

(D)

Содержание IZM40

Страница 1: ...covered in individual instruction leaflets specific to the accessory This information is also available from the Moeller Web site at www moeller net de support For application information consult Moe...

Страница 2: ...rawout circuit breaker 11 Fixed circuit breaker 14 Circuit breaker operation 15 Section 3 Circuit breaker description and operation 16 Introduction 16 Basic circuit breaker assembly 20 Pole units 20 O...

Страница 3: ...ing Spring 22 Figure 25 Cross Section of Conductor and Arc Control System 22 Figure 26 Integral Arc Runner Viewed From Top of Arc Chamber Arc Chute Removed Circuit Breaker Closed 23 Figure 27 IZM Arc...

Страница 4: ...Mounted on Cassette 38 Figure 60 Door Escutcheon and Gasket 39 Figure 61 Cassette Mounted Two Way Cable Interlock 39 Figure 62 Drawout Circuit Breaker in Cassette 40 Figure 63 Drawout Circuit Breaker...

Страница 5: ...ker Weights 10 Table 3 Rejection Interlock Pin Locations 12 Table 4 IZM Digitrip Trip Units 24 Table 5 IZM Current Sensors and Matching Rating Plugs 25 Table 6 Shunt Trip Ratings 34 Table 7 Spring Rel...

Страница 6: ...tracking resistance The drawout IZM circuit breaker is a through the door design having three breaker positions with the compartment door closed CONNECT TEST DISCONNECT and one position out of its co...

Страница 7: ...aker not IZM99 or IZM63 Figure 2 Typical IZM Nameplate m warning TYPE IZM CIRCUIT BREAKERS ARE ROBUST AND are PROVIDED WITH SAFETY FEATURES NEVERTHELESS THE VOLTAGES CURRENTS AND POWER LEVELS AVAILABL...

Страница 8: ...pecting circuit breakers and their associated assembly a qualified person should also be trained with respect to the hazards inherent to working with electricity and the proper way to perform such wor...

Страница 9: ...a cassette first remove the breaker from the cassette using the levering mechanism and drawout rails After the breaker is removed the machine screws passing through the floorpan can be removed On fix...

Страница 10: ...IZM20N 08 43 00 54 00 48 00 62 00 IZM93N 10 IZM20N 10 43 00 54 00 48 00 62 00 IZM93N 12 IZM20N 12 43 00 54 00 48 00 62 00 IZM93N 16 IZM20N 16 43 00 54 00 48 00 62 00 IZM93N 20 IZM20N 20 43 00 54 00 4...

Страница 11: ...ed the rejection pins will block the insertion of the circuit breaker into the cassette before the levering in mechanism is engaged Molded Rail Supports Extension Rail Cutout Before attempting to push...

Страница 12: ...TEST Figure 9 CONNECT Figure 10 The REMOVE position is a position outside the compartment on the cassette s drawout rails where the circuit breaker is not engaged with the levering mechanism The DISCO...

Страница 13: ...onnection Made Breaker Still Behind Door Typical Storage Position Circuit Breaker Side View Compartment Front Door Secondary Connection Made Rear of Compartment Primary Connections Not Made Breaker an...

Страница 14: ...aged To remove the circuit breaker from its compartment follow the procedure just described using a counterclockwise ratcheting motion m notice The circuit breaker mechanism is interlocked such that c...

Страница 15: ...that the panel on which a fixed circuit breaker is to be mounted is capable of supporting the weight Circuit breaker operation Circuit breakers should be operated manually and or electrically before t...

Страница 16: ...breakers utilize six or eight sets of rear primary connections these circuit breakers are available from the factory with several different phase sequences The phase sequence is also labeled on the r...

Страница 17: ...ircuit Breaker Features Front and Rear Views 6 1 Baffled Arc Chute Cover 2 Secondary Disconnect 3 Faceplate front cover 4 Integral Lifting Handle 5 Fixed Horizontal Primary Terminal 6 Fixed Primary Te...

Страница 18: ...Standard Frame Fixed Circuit Breaker Features Front and Rear Views 1 Baffled Arc Chute Cover 2 Secondary Contact Connector 3 Faceplate front cover 4 Integral Lifting Handle 5 Fixed Vertical Primary T...

Страница 19: ...OFF Button push 8 Manual ON Button push 9 Manual Charge Handle 10 Optional Operation Counter 11 Padlockable Levering Device Access Door for Drawout Breaker 12 Color Coded Breaker Position Indicator 1...

Страница 20: ...rtion and a fixed portion The exact design configuration depends upon the breaker s frame size IZM63 and IZM99 circuit breakers use two pole units and arc chute assemblies connected mechanically and e...

Страница 21: ...ains available after a closing operation Figure 23 Electrically Operated Drawout Circuit Breaker with Front Cover Removed Manual operation On manually operated circuit breakers the closing spring can...

Страница 22: ...also available to trip open an electrically operated circuit breaker Refer to Accessory devices on page 34 for more details on both standard and optional devices Electrical Motor Operator Anti pump fe...

Страница 23: ...e 27 IZM Arc Plate Assembly Arc chute components are assembled in an insulating jacket that is removable from the top of the circuit breaker as previously described in Lifting circuit breaker on page...

Страница 24: ...nt curves to coordinate with a load or system refer to the trip unit instruction book Microprocessor based trip unit IZM circuit breakers use any one of a family of DigitripE RMS trip units whose main...

Страница 25: ...evel by sensor rating If the rating plug is removed from the trip unit the circuit breaker will trip if it is carrying current Make certain the rating plug is secured in position with its retaining sc...

Страница 26: ...a peak instantaneous current of 25 x In this corresponds to an rms current of 11 x In with maximum asymmetry The making current release is enabled only for the first two cycles following a circuit br...

Страница 27: ...hout terminal block If a terminal block for customer use is not required the circuit breaker is supplied with both plug in connectors male and female just described in the two previous paragraphs The...

Страница 28: ...release the closing pulse will occur when the mechanism is charged and reset LCS open Voltage must be removed and reapplied to the spring release for subsequent operation 6 To provide selected time de...

Страница 29: ...time delays for short time and or ground time functions for testing or non zone interlocking applications a jumper from b 8 to b 9 is required 5 On three pole breakers only having ground fault functio...

Страница 30: ...se pulse is initiated If voltage is maintained to the spring release the closing pulse will occur when the mechanism is charged and reset LCS open Voltage must be removed and reapplied to the spring r...

Страница 31: ...se pulse is initiated If voltage is maintained to the spring release the closing pulse will occur when the mechanism is charged and reset LCS open Voltage must be removed and reapplied to the spring r...

Страница 32: ...If voltage is maintained to the spring release the closing pulse will occur when the mechanism is charged and reset LCS open Voltage must be removed and reapplied to the spring release for subsequent...

Страница 33: ...If voltage is maintained to the spring release the closing pulse will occur when the mechanism is charged and reset LCS open Voltage must be removed and reapplied to the spring release for subsequent...

Страница 34: ...mounted on a IZM circuit breaker Table 6 Shunt Trip Ratings Control Voltages Operational Voltage Range 70 100 Inrush Power Consumption a Opening Time ms 24 Vdc 17 26 Vdc 250W 35 48 Vdc 34 53 Vdc 250W...

Страница 35: ...roviding remote electrical indication if the circuit breaker is open or closed Figure 49 Up to three auxiliary switches can be mounted in the circuit breaker Each switch has two normally open a and tw...

Страница 36: ...an overcurrent condition Opening as a result of a circuit breaker s manual open button shunt trip or undervoltage release does not cause the overcurrent trip switch to operate The overcurrent trip sw...

Страница 37: ...wed through the front cover Figure 53 The customer supplies the key lock The provisions available are for Kirk Castell Ronis or CES Figure 53 Cover Mounted Key Lock and Operations Counter Cassette loc...

Страница 38: ...reaker is levered from the CONNECT position the shutters automatically close to cover the fixed primary contacts Figure 56 When the circuit breaker is levered into the cassette the shutters automatica...

Страница 39: ...e when others are closed A lever assembly is mounted on each breaker that interfaces with the pole shaft and the tripper bar The lever assemblies are interconnected with either cables depending upon t...

Страница 40: ...y interfaces to the drawout circuit breaker including automatic primary and secondary connections For the IEC circuit breaker a cassette style using horizontal stabs and horizontal customer bus bar te...

Страница 41: ...upport Figure 64 Drawout Cassette Features Front and Rear Views Front View Rear View 1 Extension Rails 2 Extension Rail Cutout 3 Secondary Plug in Connectors 4 Secondary Terminal Blocks 5 Arc Hood 6 O...

Страница 42: ...dimensions associated with all fixed circuit breakers and any appropriate primary bus connections can be found in a separate document The installation of a fixed circuit breaker was discussed in Sect...

Страница 43: ...the equipment if there are earlier opportunities If possible make a visual inspection each time a circuit breaker compartment door is opened and especially when a circuit breaker is withdrawn on its...

Страница 44: ...est function the Digitrip Test Kit or the hand held IZM Functional Test Kit Review test kit instructions for the trip unit Instruction leaflet Section 1 2 or 1 3 applies for instantaneous test procedu...

Страница 45: ...r each primary contact and indicates whether or not the contact should be replaced Inspection of the contacts using the contact wear indicators is conducted only with the circuit breaker closed Figure...

Страница 46: ...cribed here do not under ordinary circumstances require any assistance beyond the appropriate instructional material If further assistance is required however contact your Moeller representative Ratin...

Страница 47: ...vertical adapters must be removed Each primary disconnect finger cluster is removed by loosening the two hex head bolts with a 10 mm wrench These bolts do not have to be completely removed to slide t...

Страница 48: ...ed Contact Moeller service center Circuit breaker makes no attempt to close with either local manual or remote controls springs do not discharge Closing spring not fully charged check SPRING CHARGED i...

Страница 49: ...nd or typecode is not known it would help to refer to a pictorial and or graphic reference Also include the circuit breaker type General Order number and other information as shown on the nameplate on...

Страница 50: ...50 Operation and maintenance of IZM low voltage air circuit breakers MOELLER www moeller net de support 10 09 AWB1230 1605 Effective October 2009...

Страница 51: ...51 10 09 AWB1230 1605 Effective October 2009 Operation and maintenance of IZM low voltage air circuit breakers MOELLER www moeller net de support...

Страница 52: ...w voltage air circuit breakers Moeller GmbH Industrieautomation 2009 by Moeller GmbH nderungen vorbehalten Subject to alterations 10 09 AWB1230 1605EN Z8700 Moon Doku Heng Printed in USA 10 09 10 09 A...

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