Table Of Contents - ABB Uniswitch Operation And Maintenance Manual

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
4.4.1.2 Manual withdrawal from the service position to the
4.4.1.3 Withdrawal from the test/disconnected position onto the service
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
position................................................................................................ 28
test/disconnected position.................................................................. 30
truck .................................................................................................... 31