Siemens NXPLUS C User Manual

4/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
15.14 Mounting the air guides................................. 151
15.15 Extension with individual panels .................... 154
16 Electrical connections .................................... 154
16.1 Installation work at the floor cover ................. 155
16.2 Connecting cable T-plugs ............................... 158
16.3 Panels 2000 A, 2500 A with double
connections ................................................... 163
16.4 Connecting surge arresters............................. 164
16.5 Connecting surge limiters .............................. 165
16.6 Connecting auxiliary circuits........................... 166
17 Installation of degree of protection
versions IP31D, IP32D and IP34D.................... 171
17.1 IP31D - protection against vertically
falling water drops......................................... 171
17.2 IP32D - protection against vertically falling water
drops for switchgear inclined up to 15° .......... 175
17.3 IP34D - protection against splashing water from
any direction.................................................. 176
18 Commissioning.............................................. 177
18.1 Final work...................................................... 177
18.2 Checking the accessories................................ 179
18.3 Instructing operating personnel ..................... 179
18.4 Function test / Test operation......................... 179
18.5 Performing the power- frequency
voltage test.................................................... 183
18.6 Primary injection test ..................................... 184
18.7 Correcting circuit diagrams ............................ 184
18.8 Applying operating voltage ............................ 184
Operation........................................................ 186
19 Control elements and indicators..................... 187
19.1 Position indicators.......................................... 188
19.2 "Spring charged" indicator.............................. 188
19.3 Operations counter ........................................ 188
19.4 Ready-for-service indicator............................. 189
19.5 Circuit-breaker locking device for
"feeder earthed"............................................. 189
20 Operating the circuit-breaker ......................... 190
20.1 Closing the circuit-breaker.............................. 190
20.2 Opening the circuit-breaker............................ 190
20.3 Charging the closing spring............................ 190
20.4 Circuit-breaker test operation......................... 191
21 Operating the three-position switch ............... 192
21.1 Closing the three-position switch ................... 193
21.2 Opening the three-position switch ................. 193
21.3 Earthing/ready-to-earth with the three-position
switch............................................................ 194
21.4 De-earthing with the three-position switch..... 194
21.5 Operating the three-position switch with
motor-operating mechanism.......................... 195
21.6 Protection tripping of the
switch-fuse combination................................ 195
21.7 Emergency operation of the three-position
switch with slow motion mechanism
(900 mm panel width) ................................... 196
22 Work-in-progress earthing.............................. 201
23 Verification of safe isolation from supply........ 203
23.1 LRM plug-in sockets ....................................... 203
23.2 VOIS and CAPDIS indications .......................... 205
23.3 WEGA indications........................................... 207
24 Replacing HV HRC fuse-links ........................... 208
25 Operating the feeder voltage transformer ...... 212
25.1 Disconnecting the feeder voltage
transformer ................................................... 212
25.2 Connecting the feeder voltage transformer .... 213
26 Short instructions .......................................... 214
26.1 Operating circuit-breaker panels (600 mm panel
width) ........................................................... 214
26.2 Operating circuit breaker panels (900 mm panel
width) ........................................................... 220
26.3 Operating vacuum contactor panels ............... 226
26.4 Operating switch-disconnector, disconnector,
ring-main and metering panels with 600 mm
panel width ................................................... 230
26.5 Operating disconnector panels as of 2000 A
(900 mm panel width) ................................... 234
26.6 Operating bus sectionalizer panels with 600 mm
panel width ................................................... 238
26.7 Operating bus sectionalizer panels with 900 mm
panel width ................................................... 242
26.8 Operating bus sectionalizer panels with two three-
position disconnectors and with 600 mm panel
width............................................................. 246
26.9 Operating bus sectionalizer panels with two three-
position disconnectors and with 900 mm panel
width............................................................. 253
26.10 Operating the circuit-breaker panel with busbar
earthing switch.............................................. 261
27 Cable testing.................................................. 266
Service information ........................................268
28 Maintenance.................................................. 268
28.1 Maintenance of circuit-breaker 3AH25 with
30000 operating cycles.................................. 268
29 Checks and maintenance work in case of special
operating conditions...................................... 275

Siemens NXPLUS C Specifications

General

Brand	Siemens
Model	NXPLUS C
Category	Circuit breakers
Language	English