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UL 489
Siemens UL 489 User Manual
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Low V
oltage Insulated Case Cir
cuit Breaker
UL489 Cir
cuit Breaker
DA
N
G
E
R
Hazar
dous v
olta
ge
.
Will cause death, serious personal injur
y
, or equipment damage
.
T
urn off and lock out all pow
er supplying this
equipment
bef
ore working on this device.
3ZX1812-0WL20-1AN2
923 99994 174
Operating Instructions
Catalog No
.: CBIM-01001-0119
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Overview
6
Circuit Breaker
6
Cradle
7
2 Labels
8
Circuit Breaker Frame Accessory Label
8
Circuit Breaker Frame Type Label
8
Frame Designation
9
Trip Unit Designation
9
Rating Plug Label
10
Cradle Type Label
10
3 Standard Specifications
11
4 Packing and Lifting
12
Unpacking
12
Weights
12
Lifting with a Crane
13
Lifting with a Lifting Bar Assembly
14
Lifting Bar Assembly (3-Pole)
14
Lifting the Circuit Breaker
15
5 Installation
16
Mounting
17
Mounting Position
17
Mounting on Horizontal Surface - Mounting Tolerances
18
Cubicle and Ventilation
20
Main Terminal Connections
25
Cradle Connections
25
Horizontal Connections for Fixed Mount Breakers
25
Vertical Connections for Fixed Mount Circuit Breakers
26
Front Connections
32
Wire Connectors
39
Bus Connections to the Cradle
41
Secondary Wiring
42
Breaker Secondary Disconnects
43
Cradle Secondary Disconnect Blocks
44
Secondary Disconnect Terminal Blocks
45
Wiring in Cradle
47
Catalog Numbers
48
6 Commissioning
49
Preparation of Draw-Out Circuit Breaker
49
Inserting the Circuit Breaker into the Cradle
49
Positions of the Circuit Breaker in the Cradle
50
Unlocking the Racking Handle / Withdrawing the Racking Handle
51
Racking Circuit Breaker into Connected Position
51
Inserting Racking Handle
51
Charge the Closing Spring
52
Check List for Commissioning
54
Closing the Circuit Breaker
55
Opening the Circuit Breaker
55
Tripping
56
Reclosing a Circuit Breaker Tripped by the Trip Unit
57
Removing from Service
59
Troubleshooting
60
7 Frame Sizes / Dimension Drawings
62
Frame Size I, Fixed-Mounted Version
62
Frame Size II, Fixed-Mounted Version
67
Frame Size II, 3000 a
70
Frame Size III, Fixed-Mounted Version
71
Door Cut-Outs, Fixed-Mounted Circuit Breaker
75
Frame Size I, Draw-Out Version
77
Frame Size II, Draw-Out Version
82
Frame Size III, Draw-Out Version
86
Door Cut-Outs for Draw-Out Circuit Breakers
89
External Sensor for Neutral Conductor
91
Further Dimension Drawings
93
8 Circuit Diagrams
94
Terminal Assignment
94
Auxiliary Switches
95
Shunt Trip, Undervoltage Trip / Electrical Closing Lockout
97
Closing Coil / Electrical CLOSE
98
Motor-Operated Mechanism
99
Remote Bell Alarm Reset
99
Trip Unit Circuitry for ETU745-776
100
With Breaker Status Sensor (BSS) and Metering Module
100
Metering Module Only
101
Breaker Status Sensor (BSS) Only
102
9 Electronic Components
103
Trip Units
103
Overview of Function
103
Trip Unit ETU745
104
Trip Unit ETU776
109
Indicators
111
Protective Functions
113
ETU Displays
119
Rating Plug
145
Ground-Fault Protection Modules
146
Replace the Trip Unit
151
Internal Trip Unit Self-Test On the Overcurrent Tripping Function
153
Sealing and Locking Device
155
Cubiclebus Modules
156
System Architecture
156
Internal Modules
157
External Cubliclebus Modules
185
External Sensor for Neutral Conductor
199
External Voltage Supply
200
Handheld Test Device
201
View
201
Preparations
201
Connecting
202
Voltage Supply
202
Operation
202
Finishing
205
Catalog Numbers
205
10 Reset the Reclosing Lockout and the Bell Alarm
206
Resetting the Bell Alarm
206
Resetting the Bell Alarm with Reclosing Lockout (Optional)
207
Field Installation of a Reclosing Lockout
208
Removing the Automatic Reset Mechanism
209
Installing the Remote Bell Alarm Reset
210
Mounting Remote Reset Coil and Cut-Off Switch
210
Connecting Wires
211
Function Test
212
Updating the Options Label
212
11 Shunt Trip / Closing Coil / Undervoltage Release
213
Overview
213
Installing Shunt Trips, Closing Coils, and Undervoltage Devices
214
Installing Optional Signaling Switches on Shunt Trips, Closing Coils, and Undervoltage Devices
215
Setting Delay Times on Undervoltage Release
215
Field Installation of a Cut-Off Switch for Shunt Trips and Closing Coils
216
Mechanical Function Test
218
Connecting Wires
218
Final Tasks
219
Electrical Function Test
219
Updating the Options Label
221
12 Auxiliary and Control Switches
223
Installing Internal Auxiliary Switches S1 - S4
224
Installing the "Ready-To-Close" Switch S20
225
Trip Signaling Switches
226
Trip Signaling Switches S13, S24, and S26
227
Control Switches - Connecting Wires
228
Communication Switches
228
Connecting Secondary Wiring
228
Updating the Options Label
228
Mechanism Operated Contacts (MOC)
229
MOC Versions
230
MOC Installation Instructions
230
Order Numbers
235
Combination of MOC And Mutual Mechanical Interlocking Module
236
Mounting of MOC and Mutual Mechanical Interlocking Module on the Cradle
236
13 Motor-Operated Mechanism
237
Installing the Motor Operator
237
Optional Motor Disconnect Switch on the Front Panel
239
Updating the Options Label
240
14 Indicators and Operating Elements
241
Limiting Access to OPEN/CLOSE Buttons
241
EMERGENCY OPEN Button
243
Operations Counter
244
15 Locking Devices
245
Key Locks
245
Breaker Mounted Key Lock
246
Cradle Mounted Key Lock
248
Installing Racking Handle Key Lock
253
Installing a Bell Alarm Cover Key Lock
258
Padlocking Provisions
259
Padlock Locking the Breaker OPEN
260
Optional: Intalling Padlocks
262
Padlock Locking Device for Guide Rails
263
Padlock Locking Device for Racking Handle
263
Padlock Locking Device for Spring Charging Lever
263
CLOSE/OPEN Padlock Kit
265
16 Sealing Covers
267
17 Mechanical Interlocks
268
Field Installation of CLOSE / OPEN Buttons Blocking Device
269
Cubicle Door Interlock
270
Installing the Interlock Mechanism to the Cradle
271
Cubicle Door Interlock Drill Pattern
275
Installing Catch on the Cubicle Door
277
Function Check
277
Interlock to Prevent Racking with Cubicle Door Open
278
Coding between Circuit Breaker and Cradle
279
18 Additional Options for the Cradle
280
Shutter
280
Field Installation
281
Catalog Numbers
283
Truck Operated Contacts - TOC (Cradle Accessory)
284
19 Mechanical Circuit Breaker Interlocking
287
Configurations
287
General Notes
288
Mechanical Interlocking Two Sources (Open Transition)
289
Mechanical Interlocking Two Sources with a Tie Circuit Breaker (Open Transition)
290
Mechanical Interlocking Feeder Circuit Breakers (Single Load, Open Transition)
291
Mechanical Interlocking Three Sources (Open Transition to Standby System)
292
Mechanical Interlocking Source and Tie Circuit Breaker (Open Transition to Standby System)
293
Installing Interlocking Module
294
Installing Intermediate Shaft and Coupling
294
Fitting Interlocking Module
297
Mounting the Bowden Cables
298
Function Check
300
20 Phase Barriers
301
21 Arc Chute Covers
302
Field Installation
302
Catalog Numbers
305
22 Door Sealing Frame
306
23 Plexiglas Breaker Cover
308
24 Maintenance
310
Preparation for Maintenance
311
Opening the Circuit Breaker and Discharging the Closing Spring
311
Removing the Circuit Breaker from the Cradle
312
Changing Front Panel
313
Removing Front Panel
313
Reinstalling the Front Panel
313
Checking Arc Chutes
314
Removing Arc Chutes
315
Visual Inspection
315
Installing Arc Chutes
316
Inspection of Arc Chute Covers
317
Checking Contact Erosion
318
Exchanging the Primary Disconnects
320
Exchanging the Finger Cluster
320
Catalog Numbers
322
Exchanging the Stab Tip
323
Catalog Numbers
324
Cleaning and Greasing the Circuit Breaker
325
Cleaning and Greasing the Cradle
325
25 Primary Injection Testing
326
General Notes
327
Primary Injection Phase Current Testing
329
Primary Injection Ground Fault Current Testing
330
Achieving Correct External Neutral Sensor Polarity
332
26 Disposal
334
Low-Voltage Circuit Breakers Disposal
334
27 Technical Data
335
28 Abbreviations
343
29 Glossary
347
30 Index
350
4
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Siemens UL 489 Specifications
General
Brand
Siemens
Model
UL 489
Category
Circuit breakers
Language
English
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