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Introduction:
The zw32-12 series column-type outdoor vacuum high-voltage circuit breaker is an outdoor high-voltage switchgear with three-phase AC 50HZ and rated voltage 12kv. It is suitable for breaking and closing the load current, overload current and short-circuit current of the urban or rural power distribution system.
Conditions of Use
a. Ambient air temperature: upper limit +40℃, lower limit -40℃
b. Altitude: ≤1000m (if the altitude needs to be increased, the rated insulation level will be increased accordingly)
c. Wind pressure: no more than 700pa (equivalent to wind speed 34m/s);
d. Amplitude: earthquake intensity does not exceed 8 degrees;
e. Pollution level: Level III;
f. Maximum daily temperature difference; not exceeding 25℃
Item | Unit | zw32-12/T400-12.5 | zw32-12/T630-16 | zw32-12/T630-20 | |
Rated voltage | KV | 12 | |||
Rated current | A | 400 | 630 | 630 | |
Rated short circuit breaking current | KA | 12.5 | 16 | 20 | |
Rated short circuit making current (peak value) | 31.5 | 40 | 50 | ||
Rated peak withstand current | 31.5 | 40 | 50 | ||
Rated short circuit withstand current | 12.5 | 16 | 20 | ||
Rated short circuit duration | s | 4 | |||
Rated absolutely Marriage level | Lightning impulse withstand voltage (peak value) | kv | Interphase, ground 75, fracture 85 | ||
1min power frequency withstand voltage | Interphase, ground 42, fracture 85 | ||||
Rated operating sequence | Minute-0.3s-full minute-180s-full minute (electric mechanism) | ||||
Rated short circuit breaking current times | time | 30 | |||
Mechanical life | 10000 | ||||
Rated operating voltage (opening and closing coil) | v | DC220、 110、、 AC220 110 | |||
Allowable wear thickness of dynamic and static contacts | mm | 3 | |||
Overcurrent release rated current | A | 5 | |||
Current transformer current ratio | 200/5 400/5 600/5 | ||||
Contact opening | mm | 9±1 | |||
Corner head overtravel | 2±0.5 | ||||
Average opening speed | m/s | 1.2±0.3 | |||
average closing speed | 0.6±0.2 | ||||
Opening time | ms | 30-60 | |||
Closing time | 20-40 | ||||
Closing bounce time | ≤２ | ||||
Three-phase opening and closing synchronicity | ≤２ | ||||
Direct resistance of each static loop | μΩ | ≤80 | |||
energy storage Motor | rated voltage | v | -220 | ||
rated frequency | w | 200 | |||
energy storage time | s | ≤8 | |||
quality | kg | 85 | |||
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