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Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
24.1 Installation of voltage transformers
type 4MT3 on the busbar ............................... 107
24.2 Installation of voltage transformers
type 4MU4 on the busbar............................... 111
24.3 Installation of voltage transformers
type 4MT7 at the cable feeder........................ 113
25
Removing the voltage transformers................ 116
25.1 Removal of voltage transformers
type 4MT3 from the busbar............................ 117
25.2 Removal of voltage transformers
type 4MU4 from the busbar ........................... 119
25.3 Removal of voltage transformers
type 4MT7 from the cable feeder ................... 121
26
Busbar components ....................................... 123
27
Installing the bus sectionalizer ....................... 127
28
Tests.............................................................. 131
28.1 Checking the SF6 gas filling ........................... 131
28.2 Monitoring the gas pressure........................... 131
28.3 Checking the circuits of the low-voltage
equipment..................................................... 133
28.4 Checking high-voltage connections ................ 133
28.5 Checking electrical connections ..................... 133
28.6 Checking protection against environmental
influences...................................................... 133
29
Final installation work.................................... 134
29.1 Mounting cables with plugs ........................... 134
29.2 Connecting low-voltage cables....................... 134
29.3 Mounting the metal covers ............................ 135
30
Installation of degree of
protection version IPX1 .................................. 136
30.1 IP31D - protection against
vertically falling water drops .......................... 136
31
Installation of rear walls of switchgear ........... 139
32
Installation of end walls ................................. 142
33
Commissioning.............................................. 147
33.1 Checking the installation work ....................... 147
33.2 Test operation................................................ 147
33.3 Checking the accessories................................ 149
33.4 Schutzgeräte prüfen ...................................... 149
33.5 Correcting circuit diagrams ............................ 149
33.6 Instructing the operating personnel ............... 149
Operation........................................................150
34
Control elements and indicators..................... 151
34.1 Control elements and indicators of
the circuit-breaker.......................................... 152
34.2 Control elements and indicators of
the three-position disconnector...................... 152
34.3 Operating tools.............................................. 153
35
Interlocks....................................................... 154
36
Operating the circuit-breaker ......................... 155
36.1 Closing the circuit-breaker manually............... 155
36.2 Opening the circuit-breaker manually............. 155
36.3 Emergency release of the circuit-breaker
(with locking solenoid -Y16)........................... 155
36.4 Test operation ............................................... 156
36.5 Charging the closing spring manually............. 157
37
Operating the circuit-breaker and
the three-position disconnector...................... 158
37.1 Switching operations in
the circuit-breaker panel ................................ 158
37.2 Switching operations in
the bus sectionalizer panel............................. 164
37.3 Switching operations in top-mounted bus
sectionalizer (without additional panel).......... 176
37.4 Switching operations with
busbar components ....................................... 182
37.5 Switching operations for busbar connection
with three-position disconnector.................... 185
37.6 Three-position disconnector
with auxiliary voltage
(motor operating mechanism) ....................... 187
37.7 Emergency operation of
the three-position disconnector...................... 187
38
Operating the make-proof busbar
earthing switch.............................................. 193
38.1 Control elements and indicators..................... 193
38.2 Closing .......................................................... 194
38.3 Opening ........................................................ 195
38.4 Emergency release of
the interlock with solenoids at
the busbar earthing switch............................. 195
39
Verification of safe isolation from supply ........ 197
39.1 LRM plug-in sockets ....................................... 197
39.2 VOIS and CAPDIS indications .......................... 198
39.3 WEGA indications........................................... 200
40
Cable testing.................................................. 201
40.1 Safety instructions ......................................... 201
40.2 Test voltage ................................................... 201
40.3 Function test ................................................. 202