Product description
FEP-SF6 circuit breaker is a new generation SF6 circuit breaker developed by using mature and reliable SF6 breaking technology, which meets relevant domestic and international standards such as GB, DL and IEC. The overall dimensions of FEP circuit breakers are exactly the same as those of VEP circuit breakers of the same model, and there is no need to make any changes between them. They can be interchanged with switchgear cabinets and can be matched with mainstream switchgear cabinets in the market conveniently and reliably.
Technical characteristics
1.It has high safety. Because the internal arc-extinguishing chamber of FEP circuit breaker runs at low pressure, although the internal pressure will increase due to gas compression and heat increase during the operation of the circuit breaker, it is still in a low-pressure gas state.
2.The structure is standard, and it can be conveniently, flexibly and easily installed in the switch cabinets of mainstream manufacturers in the market.
3.The overall dimensions are completely consistent with those of the VEP circuit breaker, and they can be interchanged with the switchgear.
4.It can be conveniently and safely installed in the switch cabinets of mainstream manufacturers in the market.
Technical paramete
Serial | Number item | Unit | Data | |||
1 | Rated voltage | kV | 40.5 | 12 | ||
2 | Rated frequency | Hz | 50 | |||
3 | Rated current | A | 1250/1600/2000/2500 | 1250 | ||
4 | Insulation level | Rated short-time power frequency withstand voltage (1min) | Ground and phase | kV | 95 | 42 |
Ground and phase | 118 | 48 | ||||
Rated lightning impulse withstand voltage | Ground and phase | 185 | 75 | |||
Ground and phase | 215 | 85 | ||||
Short-time power frequency withstand voltage of auxiliary and control circuits | 2 | 2 | ||||
5 | Partial discharge | pC | ≤5 | |||
6 | Rated short circuit breaking current | kA | 31.5 | |||
7 | Rated short-circuit closing current (peak value) | 80 | ||||
8 | Rated out-of-step breaking current | 7.9 | ||||
9 | Rated out-of-phase ground breaking current | 27.4 | ||||
10 | Rated peak withstand current | 80 | ||||
11 | Rated short-term withstand current | 31.5 | ||||
12 | Rated short circuit duration | s | 4 | |||
13 | Rated back-to-back capacitor bank breaking current | A | 1250 | |||
14 | Rated cable charging breaking current | 50 | 25 | |||