Indoor High Voltage Load Switch and Fuse Combined Electrical Appliance
Introduction: FN5-12 Indoor High Voltage Load Switch [Vacuum Circuit Breaker]FN5-12R(L)Indoor High Voltage Load Switch and Fuse Combined Electrical Appliance is designed and developed by our company which has assimilated foreign advanced technology with our domestic power supply requirements. This product has passed comprehensive model test and long term trial operation examination. Its performance has reached IEC420"AC High Voltage Load Switch-Fuse Combined Electrical Appliance" (1990 version)and GB3804"3-63kV AC High Voltage Load Switch" . Its technical parameters have reached the level of similar products. It has small volume and light weight and can be used in ring net box as well as electrical substation. It is widely applied to 12kV circuit power distribution and has effectively avoided operating in lack of phase.
The research of the product has successfully filled the domestic blank and realized switch, isolation and grounding these three working position.
Terms of use: FN5-12 Indoor High Voltage Load Switch [Vacuum Circuit Breaker]
1. Environmental temperature: maximum +40°C, minimum -25°C
2. Altitude: 1000m
3. Relative humidity: daily average value smaller than 95%, monthly average value smaller than 90% (+25°C)
4. The surrounding air should be in the absence of the obvious pollution of corrosion, flammable gas
5. No regular dramatic shake
Technical Parameters - Indoor High Voltage Load Switch
Table One - Load switch-fuse combined electrical appliance
| Name | Unit | Data |
| Rated voltage | KV | 12 |
| Rated frequency | Hz | 50 |
| Rated current | A | 100 |
| Rated short circuit breaking current | kA | 50 |
| 1min work frequency voltage tolerance (RMS)towards the ground, alternated/ isolated fracture | kA | 42/48 |
| Lightening impact voltage (peak value) towards the ground, alternated/ isolated fracture | KV | 75/85 |
| Collision energy output of Fuse | kg | ≈5 |
| Name | Unit | Data |
| Rated voltage | KV | 12 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630 |
| Rated active load current | A | 630 |
| 5% rated active load breaking current | A | 31．5 |
| Rated capacitor breaking current | A | 10 |
| Rated sensor breaking current | A | 40 |
| Rated transfer current | kA | 1.3 |
| Rated short term current tolerance | kA | 20 |
| Rated peak value current tolerance | kV | 50 |
| Mechanical life span | Times | 2000 |
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