|Material:||Galvanized Sheet And Accessories||Standard:||IEC/GB|
|Function:||Control And Protection||Installation Location:||Power Plants, Substations And Power Systems Etc|
|Package:||Exporting Standard Package|
ZW7 Switch VCB Circuit Breaker,
33kv Switch VCB Circuit Breaker,
40.5kv Switch VCB Circuit Breaker
ZW7-40.5 outdoor high voltage vacuum circuit breaker is used for AC three-phase power system with 50Hz and voltage of 40.5KV, which is used for breaking, closing load current, overload current and short circuit current.
The main function:
1. Vacuum arc extinguishing, strong breaking capacity, long electrical life and 10,000 mechanical life;
2. Simple structure, maintenance-free, long maintenance period;
3. Good insulation performance and strong anti-pollution ability;
4. It can be equipped with spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; no fire and explosion hazard;
5. Built-in current transformer, the lecturer's precision reaches 0.2, which can realize three-phase interactive protection;
6. With condensation controller, it can keep the circuit breaker running reliably under certain temperature and humidity.
1. Ambient air temperature: upper limit +50°C, lower limit -30°C;
2. Altitude: ≤3000m (If the altitude is to be increased, the rated insulation level will increase accordingly);
3. Wind pressure: no more than 700Pa (equivalent to a wind speed of 34m/s);
4. Amplitude: seismic intensity of 8 degrees;
5. Pollution level: Level III;
6. Large daily temperature difference: no more than 35°C.
3.The main technical parameters:
|2||Rated insulation level||Power frequency withstand voltage||Dry test||95|
|Lightning impulse withstand voltage (peak)||185|
|4||Rated short-circuit breaking current||KA||20,25,31.5|
|5||Rated operation sequence||0-0.3s-combination-180s-combination|
|6||Rated short circuit current breaking times||times||12|
|7||Rated short circuit closing 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 continuous current||S||4|
|11||Average opening speed||m/s||1.5±0.2|
|12||Average closing speed||0.7±0.2|
|13||Contact closing bounce time||s||≤2|
|14||Three-phase combined (minute) gate synchronous time difference||≤2|
|18||Rated operating voltage and auxiliary circuit rated voltage||V||DC220,110,24|
|19||DC resistance per phase circuit (without transformer)||μΩ||≤100|
|20||Dynamic and static contacts allow wear thickness||mm||3|
1. Send the technical data, better for all useful information; we will make a good recommendation.
possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. Usually shipped by sea, small order or urgent order we can send you by air.
4. All our activities are accredited to ISO 14001:2015 and IEC standard.
5. Technology ensure the quality satisfy international request.