I. General
Characteristics
Ø All the switch operations can be carried out only when high-voltage compartment door closed.
Ø Reliable mechanical interlock is installed between grounding switch and vacuum circuit breaker handcart.
Ø All the parts and components installation heights meet the requirements of human engineering.
Ø Options: Capacitive electric indicator can be used to detect feeder or bus is energized with electricity or not.
Interlocks
Ø Interlock meets GB3906-2006 and IEC 62 271-200 standards.
Ø Feeder grounding switch can only be operated under re-movable part on test and removed position.
Ø Removable part can be moved only under removable part on disconnecting status, grounding switch open and high-voltage door closed.
Ø It can be only operated when removable part is at test, working and removed position.
Ø High-voltage door can be opened only under removable part on test position.
Additional Safety Interlocks
Ø Mechanical code can avoid low current switch plugging in high current switchgear by mistake.
Ø Reliable mechanical interlock connects high-voltage compartment door and removable parts.
Ø Options: Removable part electromagnetic interlock.
Ø Options: Grounding switch electromagnetic interlock.
Ø Let handcart into or out of cabinet on test position only when grounding switch is on closed position.
II. Electric Parameters
Items |
Unit |
Parameters |
Rated voltage |
kV |
40.5 |
Rated frequency |
Hz |
50 |
Rated short-time power frequency withstand voltage 1 min (interphase, to ground and between breaks) |
kV |
95 (118) |
Rated lightning impulse withstand voltage (interphase, to ground and between breaks) |
kV |
190 (215) |
Rated short-circuit breaking current |
kA |
25, 31.5 |
Rated short-time withstand current, 4s |
kA |
25, 31.5 |
Rated short-circuit closing current |
kA |
63, 80 |
Rated peak withstand current |
kA |
63, 80 |
Rated bus current |
A |
1250,2500,3150 |
Feeder current |
A |
1250, 2500 |
III. Overall Dimensions
Items |
Unit |
Parameters |
Width |
mm |
1200/14001 |
Height |
mm |
2800/30102 |
Depth |
mm |
2650/34503 |
Weight |
kg |
1800~2300 |
IV. Low Voltage Compartment Dimensions
Items |
Unit |
Parameters |
- |
- |
Standard type |
Width |
mm |
1200/14001 |
Height |
mm |
705 |
Depth |
mm |
450 |
V. Cable Compartment Dimensions
Items
Units
Parameters
Width
mm
1200/14001
Height
mm
1280
Cable terminal above ground
mm
≥750
1. Cabinets used in substation
2. Switch cabinet with absorption device
3. Switch cabinet with back cabinet
1. low voltage compartment door lock
2. manual energy storage operational hole
3. high voltage compartment door lock
4. handle for opening high-voltage compartment door
5. observation hole of circuit breaker closing/opening status, energy storage, and counter
6. observation hole of handcart working/testing position status indication
7. circuit breaker closing button
8. circuit breaker opening button
9. mechanical position indication and operational of grounding switch
10. chassis in/out operational hole
11. pressure relief channel
12. bus
13. circuit breaker
14. chassis
15. grounding switch
16. connecting cable
17. current transformer
18. static contact
19. moving contact
20. contact box