| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Electric Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Fixed |
| Structure: | Recloser |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 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.
| Item | Unit | Parameter |
| Voltage, current parameters | ||
| Rated voltage | kV | 40.5 |
| Rated short time power frequency withstand voltage (Imin) | kV | 95 |
| Rated lightning impulse withstand voltage (peak) | kV | 185 |
| Rated current | A | 1250, 1600, 2000 |
| Rated short-circuit breaking current | kA | 25, 31.5 |
| Rated operating sequence | O-0.3s-CO-180s-CO | |
| Rated short-circuit current breaking times | times | 12 |
| Rated short-circuit closing current (peak) | kA | 63.80 |
| Rated peak withstand current | kA | 63.80 |
| Rated short-time withstand current | kA | 25, 31.5 |
| Rated short-circuit current duration | S | 4 |
| Average opening velocity | ms | 1.5±0.2 |
| Average closing speed | ms | 0.7±0.2 |
| Contact closing bounce time | ms | <5 |
| Three-phase close (open) synchronization error | ms | <2 |
| Closing time | ms | <150 |
| Opening time | ms | <60 |
| Mechanical life | times | 10000 |
| Rated operational voltage and auxiliary circuits rated voltage | V | DC220, AC220 |
| DC resistance of circle every phase (not including transformer) | μΩ | <100 |
| Dynamic, static contact allowed to wear thickness | mm | 3 |
| Weight | kg | 800 |
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