TABLE OF CONTENTS
1
Summary .................................................................................................................................. 1
1.1
General ........................................................................................................................... 1
1.2
Standards and specifications ......................................................................................... 2
1.3
Service conditions .......................................................................................................... 3
1.3.1
Normal service conditions .................................................................................. 3
1.3.2
Special service conditions .................................................................................. 4
2
Technical data.......................................................................................................................... 5
2.1
Electrical data ................................................................................................................. 5
2.2
Internal arc classification ................................................................................................ 6
3
Design and construction .......................................................................................................... 7
3.1
Construction of the switchgear and main components.................................................. 7
3.2
Cubicle design and equipment ....................................................................................... 7
3.2.1
Compartments of fixed type switchgear ............................................................. 7
3.2.2
Compartments of withdrawable type switchgear ............................................... 9
3.2.3
Service continuity.............................................................................................. 13
3.3
Enclosure and partitioning ............................................................................................ 14
3.4
Ventilation of the cubicles............................................................................................. 14
3.5
Interlockings.................................................................................................................. 15
3.5.1
Interlocking principle ......................................................................................... 15
3.5.2
Interlockings of the fixed type switchgear ........................................................ 15
3.5.2.1
Interlocking unit................................................................................... 15
3.5.2.2
Normal interlocking ............................................................................. 17
3.5.2.3
Additional interlocking......................................................................... 17
3.5.3
Interlockings of the withdrawable type switchgear........................................... 18
3.5.3.1
Cubicle internal interlocking ............................................................... 18
3.5.3.2
Door interlocking................................................................................. 20
3.5.3.3
Locking devices .................................................................................. 21
4
Operation of the switchgear................................................................................................... 22
4.1
General cautions and warnings.................................................................................... 22
4.2
Commissioning ............................................................................................................. 23
4.2.1
Preparatory work .............................................................................................. 23
4.2.2
Start-up 24
4.3
Operating the fixed type switchgears ........................................................................... 25
4.3.1
Manual operation of the SFG switch-disconnector .......................................... 25
4.3.1.1
Closing the SFG switch-disconnector ................................................ 25
4.3.1.2
Opening the SFG switch-disconnector .............................................. 25
4.3.1.3
Operating the SFG switch-disconnector to the earthed position....... 26
4.3.1.4
Opening the SFG switch-disconnector from the earthed position..... 26
4.3.1.5
Operations in fixed mounted circuit-breaker cubicles ........................ 27
4.4
Operating the withdrawable type switchgears ............................................................. 28
4.4.1
Manual operation of the withdrawable type...................................................... 28
4.4.1.1
Manual insertion from the test/disconnected position to the service
position................................................................................................ 28
4.4.1.2
Manual withdrawal from the service position to the
test/disconnected position.................................................................. 30
4.4.1.3
Withdrawal from the test/disconnected position onto the service
truck .................................................................................................... 31
4.4.1.4
Insertion from the service truck into the test/disconnected position.. 32
4.4.2
Opening and closing the doors......................................................................... 33
4.4.3
Circuit-breaker - type VD4 ................................................................................ 34
