1. ZW7 -40.5 Series outdoor 3 phase 33kv 35kv 36kv 40.5kv 1250a vacuum circuit breaker vcb
ZW7-40.5 series outdoor high voltage vacuum circuit breaker 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.
Stanadard
GB1984-89<AC high voltage circuit breakers>;
IEC-56<high-voltage AC circuit breakers>;
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. Parameter Data of vacuum circuit breaker
Mainly Technical parameters
| NO. | Item | Unit | data |
| 1 | Rated voltage | kV | 40.5 |
| 2 | Rated insulation level | 1min power frequency withstand voltage | dry | kV | 95 |
| wet | 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 operating sequence | | O-0.3s-CO-180s-CO |
| 6 | Rated short-circuit breaking current breaking times | times | 20 |
| 7 | Rated short- circuit closed current (peak) | kA | 50,63,80 |
| 8 | Rated peak withstand current | kA | 50,63,80 |
| 9 | Rated short-time withstand current | kA | 20,25,31.5 |
| 10 | Rated short-circuit duration | s | 4 |
| 11 | Average opening speed | ms | 1.5±0.3 |
| 12 | Average closing speed | ms | 0.6±0.3 |
| 13 | Contact closing bounce duration | ms | ≤5 |
| 14 | Three phase closing and opening synchronism | ms | ≤2 |
| 15 | Opening time | ms | ≤90 |
| 16 | Closing time | ms | ≤60 |
| 17 | Mechanism life | times | 10000 |
| 18 | Rated operating voltage and auxiliary loop rated voltage | V | DC 110/220 |
| AC 110/220 |
| 19 | Phase loop DC resistance (without current transformer) | µΩ | ≤100 |
| 20 | Permitted accumulate wear-thickness of dynamic and static contact | mm | 3 |
| 21 | Weight | kg | 900 |
3. Product application
height above sea level:1000m.
Air filthy degree: III degrees.
Ambient temperature:-30ºC~+40ºC
Ambient humidity:average humidity per day is no more than 95%:average humidity per month is no more than 90%.
Earthquake intensity:not exceed 8 degrees.
Saturated vapour pressure:average pressure per day is no more than 2.2kPa:average pressure per month is no more than 1.8kPa.
4. Photo and drawing
5. Factory
6. Delivery
7. FAQ
1. Send the technical data, better for all useful information; we will make a good recommendation.
If 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.
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ZW7 3 Phase 33KV 35KV 36KV 40.5KV 1250A Vacuum Circuit Breaker Images
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