Table of Contents
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Contents
1
Safety instructions ................................................................................................................................... 3
2
General instructions ................................................................................................................................. 8
2.1
General instructions ........................................................................................................................................ 8
2.2
Five Safety Rules of Electrical Engineering .................................................................................................... 8
2.3
Hazardous substances ................................................................................................................................... 8
2.4
Personal protective equipment (PPE) ............................................................................................................. 9
2.5
Due application ............................................................................................................................................... 9
2.6
Qualified personnel ......................................................................................................................................... 9
2.7
Update of the firmware of protection relays....................................................................................................10
3
Features ................................................................................................................................................... 11
4
Technical data ......................................................................................................................................... 12
4.1
Complete switchgear .....................................................................................................................................12
4.2
Basic prescriptions and standards .................................................................................................................12
4.3
Electromagnetic compatibility - EMC .............................................................................................................13
4.4
Rating plates ..................................................................................................................................................13
4.5
IAC classification ............................................................................................................................................13
4.6
Panel dimensions ...........................................................................................................................................14
4.7
Room planning ...............................................................................................................................................14
4.8
Operating conditions ......................................................................................................................................14
4.9
Vacuum circuit-breaker type 3AE ...................................................................................................................15
4.10
Operating instructions for circuit-breaker type 3AE ........................................................................................15
5
Overview of panel types ........................................................................................................................ 16
6
Panel design ........................................................................................................................................... 18
6.1
Basic design circuit-breaker panel, single-busbar system .............................................................................18
6.2
Basic design circuit-breaker panel with HV HRC fuse ...................................................................................18
6.3
Basic design circuit-breaker panel, double-busbar system ............................................................................19
7
Interlocks ................................................................................................................................................. 20
7.1
Mechanical interlocks for single-busbar system .............................................................................................20
7.2
Mechanical interlocks for double-busbar system ...........................................................................................21
7.3
Additional electromagnetic interlocks (optional) .............................................................................................21
7.4
Additional padlock interlock (optional) ............................................................................................................22
7.5
Additional key-operated interlock (optional) ...................................................................................................22
8
Accessories ............................................................................................................................................ 23
8.1
Operating tools ...............................................................................................................................................23
8.2
Service truck ..................................................................................................................................................25
8.3
Service truck versions ....................................................................................................................................25
9
Customer support .................................................................................................................................. 28
9.1
Service ...........................................................................................................................................................28
9.2
Repairs...........................................................................................................................................................28
9.3
Before you call ...............................................................................................................................................28
9.4
Service contact ..............................................................................................................................................28
10 Operating the circuit-breaker panel ...................................................................................................... 29
10.1
Control elements at the front side of the panel ...............................................................................................29
10.2
Position indicators visible on high-voltage door .............................................................................................30
10.3
Access to compartments ................................................................................................................................30
10.4
Opening the high-voltage door .......................................................................................................................30
10.5
Closing the high-voltage door ........................................................................................................................32
10.6
Positions of the withdrawable circuit-breaker .................................................................................................34
10.7
Racking the withdrawable circuit-breaker to service position .........................................................................35
10.8
Racking the withdrawable circuit-breaker to test position ..............................................................................37
10.9
Closing the circuit-breaker electrically ............................................................................................................40
10.10 Opening the circuit-breaker electrically ..........................................................................................................41
10.11 Closing the circuit-breaker manually ..............................................................................................................42
10.12 Opening the circuit-breaker manually ............................................................................................................45
10.13 Discharging the spring energy store ..............................................................................................................47
10.14 Charging the spring manually ........................................................................................................................48
10.15 Earthing the feeder manually .........................................................................................................................51
10.16 De-earthing the feeder manually ....................................................................................................................53
10.17 Removing the low-voltage connector .............................................................................................................56
4
NXAIR M
139-2021.9 / 07
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