22CB vacuum main circuit breaker
dedicated to electric locomotives — 25kV/1000A
Specifications
| Model | 22CB |
|---|---|
| Standard | GB/T 1984 (HV AC circuit breakers), GB/T 11022and traction power equipment technical conditions |
| Rated Voltage | 25kV |
| Rated Current | 1000A |
| Operating Temperature | -40℃~+70℃ |
| Altitude | <4000m |
| Materials | vacuum interrupter, spring/permanent-magnet operating mechanism, hot-dip galvanized tank |
| Installation | mounted on electric locomotives |
22CBThe vacuum main circuit breaker is a dedicated OCS circuit breaker for electric locomotives, integrating a surge arrester and reactor, electro-pneumatically controlled and mounted on the locomotive — the key protective device of the traction system.
| Maximum working voltage | 27.5kV |
| Rated working voltage | 25kV |
| Rated working current | 1000A |
| Mechanical life | 250000 operations |
| Key features | dedicated to electric locomotives — , integrating a surge arrester and reactor, electro-pneumatically controlled |
Performance
Operating Conditions
for traction substations, switching stations and 10kV distribution systems under frequent operation and short-circuit breaking duty.
Mechanical Performance
vacuum arc extinction is maintenance-free with a mechanical life of 10000 operations; intelligent types with controllers support telecontrol and fault recording.
Electrical Performance
Rated short-circuit breaking current and short-time withstand current satisfy system short-capacity verification; insulation level complies with GB/T 11022.
Applications
dedicated to electric locomotives —
22CB The vacuum main circuit breaker is a dedicated OCS breaker for electric locomotives, mounted on electric locomotives.
Key traction system protection
it is the key protective device of the locomotive traction system, safeguarding safe traction operation.
Integrated design:
surge arrester and reactor are integrated on the electric locomotive.
Electro-pneumatic control:
electro-pneumatically controlled; rated working voltage 25kV, maximum 27.5kV, rated current 1000A.
