1. Outdoor ZW7 - 40.5 30KV 33 KV 35KV Porcelain Pole VCB Vacuum Circuit Breaker with Spring Operation
Outdoor ZW7 - 40.5 30KV 33 KV 35KV Porcelain Pole VCB Vacuum Circuit Breaker with Spring Operation is three phase AC 50Hz, rated voltage is 40.5kV outdoor high-voltage electrical equipment , attached the spring operator or electromagnetic actuator can be well controlled electric opening and closing can also be Manual storage, manually open and close. Design performance meet GB1984-89<<AC high voltage circuit breakers>>; national standards, and meet the IEC-56<<high-voltage AC circuit breakers>>; International Electro-technical Commission standards. ZW7-40.5 Type vacuum circuit breaker is mainly used for outdoor 35kV power transmission system control and protection also applies to urban and rural power distribution networks and industrial and mining enterprises in the normal operation and short circuit protection purposes. The overall structure of the insulator pillar product type; built vacuum interrupter type on the vase, porcelain vase for the next pillar vase. For frequent operation place. And has good sealing, anti-aging, high pressure, no burning, no explosion, long life, convenient installation and maintenance features.
2. Environmental conditions:
Ambient air temperature: upper limit +50 ° C, lower limit -30 ° C;
Amplitude: seismic intensity of 8 degrees;
Pollution level: Level III;
Large daily temperature difference: no more than 35 °C.
Altitude: ≤3000m (If the altitude is to be increased, the rated insulation level will increase accordingly);
Wind pressure: no more than 700Pa (equivalent to a wind speed of 34m / s;
3. main function:
It can be equipped with spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; no fire and explosion hazard;
Built-in current transformer, the lecturer's precision reaches 0.2, which can realize three-phase interactive protection;
With condensation controller, it can keep the circuit breaker running reliably under certain temperature and humidity.
Vacuum arc extinguishing, strong breaking capacity, long electrical life and 10,000 mechanical life;
Simple structure, maintenance-free, long maintenance period;
Good insulation performance and strong anti-pollution ability;
4. main technical parameters:
| NO | Item | Unit | Value |
| 1 | Rated voltage | KV | 40.5 |
| 2 | Rated insulation level | Power frequency withstand voltag | Dry test | 95 |
| Wet test | 80 |
| 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 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 |
| 15 | Closing time | ≤150 |
| 16 | Opening time | ≤60 |
| 17 | Mechanical life | times | 10000 |
| 18 | Rated operating voltage and auxiliary circuit rated voltage | V | DC220,110,24 |
| AC220,110,24 |
| 19 | DC resistance per phase circuit (without transformer) | μΩ | ≤100 |
| 20 | Dynamic and static contacts allow wear thickness | mm | 3 |
| 21 | weight | kg | 800 |
5. Photo and drawing
6. Factory
7. FAQ
1. Send the technical data, better for all useful information; we will make a good recommendation.
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.
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ZW7-40.5 30KV 33 KV 35KV Porcelain Pole VCB Vacuum Circuit Breaker Images
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