ZW32-12 Series outdoor medium-voltage vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24kV, 50/60Hz power system.
IEC622 71-100 & GB1984: medium high voltage circuit breaker
IEC60694 & GB/ T11022: MV general technical requirement of switch and control apparatus.
General Description
ZW32-12 Series outdoor medium-voltage vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24kV, 50/60Hz power system. It is applicable for substations, industry and mining, urban and rural electricity power networks, especially for occasions with frequent operation and automatic power distribution network. It accords with the standard of IEC622 71-100 & GB1984: medium high voltage circuit breaker, IEC60694 & GB/ T11022: MV general technical requirement of switch and control apparatus.
Model Instruction
Z W 32 -12 F (G)/ T 630 □
Z – Vacuum circuit breaker
W – Outdoor
32 – Design serial number
12 – Rated voltage
F – Boundary controller (Watchdog)
(G) – Isolation knife
T – Spring operating mechanism
630 -Rated current
□ – Rated short circuit breaking current
Main Technical Parameters
| Item | Unit | Parameters | ||
| Rated voltage | kV | 12 | ||
| Rated current | A | 6301250 | ||
| Rated insulation leve |
1 minute power frequency withstand voltage |
Dry | kV | 42(across open contacts:48) |
| Wet | 34 | |||
| Lightning impulse withstand voltage(peak) | kV | 75(across open contacts:85) | ||
| Rated short-circuit breaking current | kV | 2025 | ||
| Rated short-circuit making current(peak) | kV | 5063 | ||
| Rated peak withstand current | kV | 5063 | ||
| Rated short-time withstand current for 4s | kV | 2025 | ||
| Rated operating sequence | O-0.3s-CO-180s-CO | |||
| Rated short-circuit breaking current breaking times | Times | 30 | ||
| Mechanical life | Times | 10000 | ||
| Rated voltage of energy storage motor | V | DC or AC220,DC110,48,24 | ||
| Rated operation voltage | V | DC or AC220.DC110,48,24 | ||
| Abrasions thickness of contacts | mm | 3 | ||
| Rated current of over-current release | A | 5 | ||
| Current transformer ratio | 200/5,400/5,600/5(Protection degree:Ill class,Class:0.5) |
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