30KV 33KV 35KV 38kv 40.5kv Outdoor Vacuum Circuit Breaker Automatic
ZW7-40.5 series outdoor high voltage vacuum circuit-breaker is for
three phase, rated voltage 40.5KV, AC 50HZ power system, mainly
used for breaking and closing load current, over current and
- Using vacuum arcing, high breaking ability, long electrical
endurance, mechanical life 10000 times.
- Simple construction, maintenance-free, No maintenance cycle is
- Good insulation performance, good prevent filth ability.
- Can match the spring or electromagnetic operating mechanism,
mechanically sound, can be frequent operation. No fire and
- Built-in current transformer, accuracy of 0.2, can be realized
three mutual protection
- Built-in condensation controller, circuit breakers can be
maintained at a certain temperature reliably.
1. Ambient air temperature: Upper limit of +40°C, lower limit of
2. Wind speed: no more than 34m/s;
3. Altitude: No more than altitude of 2000 meters (If need higher
altitude, its rated level accordingly).
4. Air pollution levels: no more than III;
5. Maximum Temperature difference:Not more than 25°C.
|1min power frequency withstand voltage||dry||95|
|Lightning impulse withstand voltage (peak)||185|
|3||Rated current||A||1250, 1600, 2000|
|4||Rated short-circuit breaking current||kA||20, 25, 31,5|
|5||Rated operating sequence||O-0.3s-CO-180s-CO|
|6||Rated short-circuit breaking current breaking times||Times||12|
|7||Rated short- circuit closed current (peak)||kA||50, 63, 80|
|8||Rated peak withstand current|
|9||Rated short-time withstand current||kA||20, 25, 31.5|
|10||Rated short-circuit duration||S||4|
|11||Average opening speed||m/s||1.5 ±0.2|
|12||Average closing speed||0.7 ±0.2|
|13||Contact closing bounce duration||s||≤2|
|14||Three phase closing and opening synchronism||≤2|
|18||Rated operating voltage and auxiliary loop rated voltage||V||Dc220, 110, 24|
|Ac220, 110, 24|
|19||Phase loop DC resistance (without current transformer)||uΩ||≤100|
|20||Permitted accumulate wear-thickness of dynamic and static contact||mm||3|