Indoor SF6 Circuit Breaker with High Safety Performance-40.5
| Brand | ROCKWILL |
| Model NO. | Indoor SF6 Circuit Breaker with High Safety Performance-40.5 |
| Rated voltage | 40.5kV |
| Rated frequency | 50Hz |
| Series | FEP |
Product Introduction
FEP-40.5 SF6circuit breaker is the latest generation of SF6circuit breaker developed with mature and reliable SF6breaking technology. It fully meets GB, DL, IEC and other relevant domestic and international standards.The boundary dimensions of FEP-40.5 circuit breaker are exactly the same as those of VEP-40.5 circuit breaker of the same model. There is no need to make any changes between the two.
It can be interchanged with AMS switchgear and can be easily and reliably cooperated with the mainstream 40.5kV centrally installed and floor-mounted switchgear on the market.
Characteristic
- FEP SF6circuit breaker has a good function of breaking capacitive current.
- FEP SF6circuit breaker has good SF6gas insulation characteristics.
- FEP SF6circuit breaker features high safety. Because the internal arc-extinguishing chamber of the FEP -40.5 circuit breaker is operated at low pressure, although the gas compression and heat increase during the operation of the circuit breaker will cause the internal pressure rise, it is still in a relatively low pressure gas state.
- FEP SF6circuit breaker is equipped with a safety film to ensure that all accidental abnormal over-pressures can be released, although this will not happen.
- FEP SF6circuit breaker is equipped with SF6 low pressure alarm auxiliary switch to ensure that the circuit breaker can work under normal pressure.
- FEP SF6circuit breaker has an auto-reclosing function. The auto-reclosing sequence is: opening - 0.3s - closing & opening -180s - closing & opening.
- FEP SF6circuit breaker is a maintenance-free circuit breaker. All three poles are designed to be maintenance-free and do not need to be disassembled during the service life. All maintenance work is simply a matter of filling the operating mechanism with lubricating oil.
- FEP SF6circuit breaker can be of centrally installed or floor-mounted type, which is very convenient, flexible and easy to install in various types of mainstream switchgear on the market.
- The boundary dimensions of FEP SF6circuit breaker are exactly the same as those of VEP -40.5 circuit breaker and can be interchanged when matching with AMS switchgear.
- FEP SF6floor-mounted circuit breaker can be easily and safely installed in the mainstream 40.5kV floor-mounted removable switchgear on the market.
Parameter
| Items | Unit | Data |
|
Rated voltage |
kV |
12/40.5 |
|
Rated frequency |
Hz |
50 |
|
Rated power frequency withstand voltage (1min) |
kV |
95 |
|
Rated lightning impulse withstand voltage (peak) |
kV |
185 |
|
Rated current |
A |
1250/1600/2000/2500 |
|
Rated short-circuit breaking current |
kA |
25~31.5 |
|
Rated short-time withstand current |
|
31.5 |
|
Rated peak withstand current (peak) |
|
80 |
|
Rated short-circuit closing current (peak) |
|
80 |
|
Rated cable charging breaking current |
A |
50 |
|
Rated back-to-back capacitor breaking current |
A |
1250 |
|
Rated duration of short-circuit current |
s |
4 |
|
Rated operation sequence auto-reclosing |
|
O-0.3s-CO-180s-CO |
|
Rated operating voltage |
V |
AC220/110、DC220/110 |
|
Mechanical life |
time |
10000 |
|
Pollutiongrade |
— |
Grade Ⅱ |
|
Electromagnetic compatibility |
— |
Grade Ⅲ Severe Degree |
|
SF6 gas rated pressure (gauge pressure at 20℃) |
MPa |
0.45±0.01 |
|
Alarm pressure (gauge pressure at 20℃) |
|
0.4±0.01 |
|
Annualgas leakage rate |
% |
≤0.1 |
|
Gas moisture content (20°C) |
μL/L |
≤150 |
