| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Electric Type |
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Indoor high-voltage AC vacuum load switch-fuse combination("combination" for short) is used in power systems with an AC frequency of 50 Hz and a rated voltage of 40.5 kV to break load currents, overload currents and short-circuit currents. It particularly applies to the places needing control, protection for oil-free, maintenance-free, frequently-operated and ring network power supply units and terminal power supply transformers.
Ambient temperature:-40ºC-+40ºC (below 35ºC within 24 hours)
Relative humidity:≤95% (daily average) or ≤90% (monthly average)
Altitude:≤1000m
The combined electric apparatus is a three-pole linkage structure
The operation mode of the vacuum arc extinguishing chamber of the combined electric apparatus adopts the electric spring operating mechanism for closing, and the tripping electromagnet for opening, and can also be used for manual closing and opening
A reliable mechanical interlock device is installed between the vacuum interrupter, the isolation switch and the ground switch of the combined electric appliance, and the isolation switch and the ground switch are operated by the same shaft
| Name | Unit | Data | ||||||
| Rated voltage | kV | 40.5 | ||||||
| Rated frequency | Hz | 50 | ||||||
| Rated current | A | 630 | 1250 | 2000 | 2500 | 3150 | 4000 | |
| Rated short-time withstand current | kA | 20/25 | 25/31.5 | 31.5 | 40/50 | |||
| Rated short-time withstand current(peak) | kA | 50/63 | 63/80 | 80 | 100/125 | |||
| Rated short-time power frequency withstand voltage | kV/min | 95/1(phase to phase,to earth,dry) | ||||||
| 118/1(phase to phase,to earth,dry) | ||||||||
| 95/1(phase to phase,to earth,wet) | ||||||||
| Rated lightning impulse withstand voltage | kV | 185(phase to phase,to earth) | ||||||
| 215(open contact) | ||||||||
| Rated short-time withstand current duration | S | 4(disconnecting switch),2(earthing switch) | ||||||
| Creep age distance | mm | ≥1256(Class e anti-fouling) | ||||||
| Main loop residence | μΩ | ≤100 | ≤80 | |||||
| Equipped with operating mechanism | Manual operation mechanism | CS17-G5(no earthing switch) | ||||||
| Main cutter CS17-5G, ground cutter CS17-G2(with single/double ground switch) | ||||||||
| Motor operating mechanism | CJ6 type, motor voltage AC380V or DC220V, control voltage AC220V or DC220V, auxiliary contact 8 normally open 8 normally closed (standard) | |||||||
| Mechanical life | Times | 2000(disconnecting switch/earthing switch) | ||||||
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