ZW7 Vacuum Circuit Breaker
KEY WORDS:High pressure vacuum switch
Classification：
DETAILS
Description:
Type ZW7-36 outdoor high-voltage vacuum circuit breaker is a kind of outdoor high-voltage switchgear under three-phase AC 50Hz, 36kv rated voltage and below. It can be used to switch on and off the loading, overloading and short-circuit current.
Features:
1. Storage, making and breaking by motor, It can operating by handle.
2. Breaking short-circuit current up to 25kA.
3. Mini motor spring mechanism (about 30W).
4. Installation method: adopt two type installation method.
5. Sealing performance: adopt reliable sealing technical.
6. Incoming & Outgoing method: adopt silicon bushing to make enough insulate distance.
7. Safe operating: there is an equipment to protect explosion.
Techincal data:
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | KV | 36 | ||
| 2 | Rated current | A | 1250,1600,2000 | ||
| 3 | Rated short-circuit breaking current | KA | 20,25,31.5 | ||
| 4 | Rated insulation level | Power frequency withstand voltage | Dry | KV | 95 |
| Wet | KV | 80 | |||
| Lightning impulse withstand voltage (peak value) | KV | 185 | |||
| 5 | Rated operating sequence | O-0.3s-CO-180sCO | |||
| 6 | Rated capacitor group breaking current | A | 400 | ||
| 7 | Rated short-circuit breaking current | Time | 20 | ||
| 8 | Rated peak withstand current | KA | 50,63,80 | ||
| 9 | Rated short - time withstand current | KA | 20,25,31.5 | ||
| 10 | Rated Short-circuit Continuing Time | S | 4 | ||
| 11 | Machinery life | Time | 10000 | ||
| 12 | Permissible gross wearing thickness for dynamic/static contacts | mm | 3 | ||
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