Vacuum Circuit Breaker(VCB)12KV 24KV 36KV ZW32-12 outdoor AC vacuum circuit breaker
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Product Description
Product Description
ZW32-12 model outdoor AC 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: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV General technical requirement of switch and control apparatus
Service condition
1. Altitude: ≤ 2000m;
2. Ambient temperature: -40°C~+45°C
3. Wind speed: 34m/s
4. Earthquake intensity: ≤8 degree
5. Ambient pollution: IV
6. Ice thickness: 10mm
7. Applicable occasions should be free from inflammables, explosives, corrosives and severe vibrations.
Product technical parameter
| Name | Unit | Data | ||
| 12kV | ||||
| Rated voltage | KV | 12 | ||
| Rated current | A | 630,1250 | ||
| Rated insulating level | 1min.PF 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 | KA | 20,25 | ||
| Rated short-circuit making current (peak) | KA | 50,63 | ||
| Rated peak withstand current | KA | 50,63 | ||
| 4s rated short-time withstand current | KA | 20,25 | ||
| Rated operating sequence | O-0.3s-CO-180s-CO | |||
| Breaking times of rated short-circuit breaking current | times | 30 | ||
| Mechanical duration | 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: Ⅲ class, Class: 0.5) | |||