Indoor High Voltage Vacuum Load Switch
Introduction: Indoor High Voltage Vacuum Load Switch [Electrical Switch]FZN21-12D/T630-20 Indoor High Voltage Vacuum Load Switch is an indoor switch device of three-phase AC 50 Hz. It can open, close, load, break load and overload current. It also can open or close the unloaded long wire; unload transformer as well as capacitor.
FXRN21-12D/T125-31.5 Indoor High Voltage Vacuum Load Switch- Fuse Combination Electrical Appliance is composed of the load switch and the fuse. Besides the above mentioned functions, it also has protection function.
Working & Environmental Conditions - Indoor High Voltage Vacuum Load Switch
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%
4. The surrounding air should be in the absence of the obvious pollution of corrosion, flammable gas
5. No fire or explosion hazard.
6. No regular dramatic shake. The gradient less than 3°
Model Meaning
Main Technical Parameters - Indoor High Voltage Vacuum Load Switch [Vacuum Circuit Breaker]Table One - Load Switch
| Order | Item | Unit | Data |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated active load breaking current | A | 630 |
| 5 | Rated closed loop breaking current | A | 630 |
| 6 | 5％ rated active load breaking current | A | 31．5 |
| 7 | Rated cable charge breaking current | A | 10 |
| 8 | Rated unload transformer capacity | kVA | 1250 |
| 9 | 1min work frequency voltage tolerance: (vacuum fracture, opposite, towards the ground/ isolated fracture) | kV | 42/48 |
| 10 | Lightening impact voltage tolerance: (vacuum fracture, opposite, towards the ground/ isolated fracture) | kV | 75/85 |
| 11 | Rated short term current tolerance meter (thermal stable) | Kv/S | 20/4 |
| 12 | Rated peak value current tolerance meter (dynamic stable) | kV | 5 |
| 13 | Rated short circuit closing current | kV | 50 |
| 14 | Mechanical life span | Times | 10000 |
| 15 | Vacuum arc chamber allowed accumulated attrition thickness | Mm | 2 |
| 16 | Operation power supply voltage AC/DC | V | 110, 220 |
| ORDER | ITEM | UNIT | DATA |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Maximum rated current of the fuse | A | 125 |
| 4 | Rated breaking exchange current | A | 3150 |
| 5 | Fuse triggered Switch opening and closing time | Ms | 40±5 |
| 6 | Rated short circuit breaking current (RMS) | kA | 31．5 |
| 7 | Rated short circuit breaking current (peak value) | kA | 50 |
| 8 | 1min work frequency voltage tolerance: (vacuum fracture, opposite, towards the ground/ isolated fracture) | kV | 42/48 |
| 9 | Lightening impact voltage tolerance: (vacuum fracture, opposite, towards the ground/ isolated fracture) | kV | 75/85 |
| 10 | Fuse collision energy output | J | 2-5 |
1 framework 2 Isolate knife 3 fuse 4 insulate pull bar 5 upper support 6 vacuum arc chamber7 static contact 8 Insulator9 ground knife 10 ground spring 11 Switch opening spring 12 button release transmission device 13 Insulate pull bar
14 Spindle 15 auxiliary axis 16 adjustment pull bar 17 spring actuator
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Complete set switchgear-Power Control System
