Contents
6 NXAIR M 139-2021.9 / 07
17 Earthing and de-earthing the busbar system .................................................................................... 133
17.1 Earthing the busbar system manually ..........................................................................................................133
17.2 De-earthing the busbar system manually .....................................................................................................138
18 Operating the shutters ......................................................................................................................... 143
18.1 Operating the shutter to the busbar compartment in the switching-device compartment .............................143
18.2 Operating the shutter to the connection compartment in the switching-device compartment ......................146
19 Accessing the connection compartment through the front............................................................. 150
19.1 Preparations before accessing the connection compartment.......................................................................150
19.2 Accessing the connection compartment through the switching-device compartment ..................................152
19.3 Installing the vertical partition in the switching-device compartment ............................................................153
19.4 Accessing the connection compartment through the switching-device compartment in panel versions with
ventilation system ........................................................................................................................................157
19.5 Installing the vertical partition and the ventilation duct in the switching-device compartment ......................162
19.6 Accessing the connection compartment through the switching-device compartment in panel versions with
voltage transformer compartment ................................................................................................................168
19.7 Installing the bushing plate, the vertical partition and the voltage transformer compartment in the switching-
device compartment .....................................................................................................................................172
20 Accessing the connection compartment through the rear .............................................................. 177
20.1 Accessing the connection compartment through the rear side of the panel .................................................177
20.2 Installing the rear wall on the connection compartment ...............................................................................180
20.3 Accessing the connection duct through the rear side of the panel ...............................................................183
20.4 Installing the rear walls on the connection duct ............................................................................................186
21 Key-operated interlocks....................................................................................................................... 189
21.1 Key-operated interlocks ...............................................................................................................................189
21.2 Key-operated interlocks for the busbar earthing switch ...............................................................................191
22 Fitting the earthing device ................................................................................................................... 193
22.1 Design, application and inspection of the earthing accessories ...................................................................193
22.2 Connecting the earthing device ....................................................................................................................194
22.3 Removing the earthing device ......................................................................................................................201
23 Panels with motor operating mechanism control ............................................................................. 205
23.1 Overview of functionality ..............................................................................................................................205
23.2 Opening the control door .............................................................................................................................209
23.3 Closing the control door ...............................................................................................................................210
23.4 Selecting manual operation for racking ........................................................................................................211
23.5 Selecting electrical operation for racking .....................................................................................................213
23.6 Selecting interlocking ...................................................................................................................................214
23.7 Racking the withdrawable circuit-breaker to service position manually ........................................................217
23.8 Racking the withdrawable circuit-breaker to service position electrically .....................................................220
23.9 Racking the withdrawable circuit-breaker to test position manually .............................................................221
23.10 Racking the withdrawable circuit-breaker to test position electrically ...........................................................225
23.11 Opening the circuit-breaker manually ..........................................................................................................226
23.12 Closing the circuit-breaker manually ............................................................................................................227
23.13 Charging / discharging the spring energy store manually ............................................................................228
23.14 Earthing / de-earthing the feeder manually ..................................................................................................230
23.15 Earthing / de- earthing the feeder electrically ...............................................................................................232
23.16 Earthing / de-earthing the busbar system manually .....................................................................................233
23.17 Earthing / de-earthing the busbar system electrically ...................................................................................233
23.18 Further operating options .............................................................................................................................234
23.19 Technical data / operating times ..................................................................................................................235
23.20 Fault indication and fault evaluation .............................................................................................................236
24 Panel heater .......................................................................................................................................... 237
24.1 Heater versions ............................................................................................................................................237
24.2 Mechanical temperature controller ...............................................................................................................237
24.3 Electronic temperature and humidity controller ............................................................................................238
24.4 Applications for temperature controller ........................................................................................................238
25 Service information .............................................................................................................................. 240
25.1 General maintenance ...................................................................................................................................240
25.2 Time schedule for maintenance measures ..................................................................................................240
25.3 Visual inspection ..........................................................................................................................................241
25.4 Preventive maintenance ..............................................................................................................................242
To Next Page
Loading...
