| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Energy-storage Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Indoor |
| Structure: | Vcb |
| Samples: |
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| Customization: |
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Indoor VCB Use VSG Modular Spring Operating Mechanism
The VSG spring operating mechanism is for VSG-12 vacuum circuit breaker, is a type of front indoor high voltage VCB, suitable for 3 phase AC, 50 Hz, and rated voltage of 12kV, and applied in places with breaking of different load and frequent operations as protection and control unit, such as industrial and mining enterprise, power plants and transformer substations.
The VSG mechanism uses a cam (in the core module of the mechanism) to drive the spindle directly (in the frame spindle module) to reduce the transmission link and improve the transmission efficiency (no hinge connection). Reduce the energy input of the product and increase the service life of the product. Install the main circuit module, that is, complete the basic configuration of the vacuum circuit breaker. Then install the chassis car module, the contact arm, the contact, and the insulating sleeve to complete the configuration of the hand-cranked circuit breaker.
Features:
1. Integrated, modular, miniaturized and lightweight;
2. High reliability, long life and more stable performance;
3. The parts are generalized, stocked and standardized;
4. High transmission efficiency and more reasonable design;
5. Independent property rights;
6. Mechanical life more than 15000 times
Working Conditions:
1. Altitude not exceeding 2000m;
2. Ambient temperature: -15°c ~+40°c;
3. Relative humidity: monthly average not exceeding 95%, daily relative humidity not exceeding 95%;
4. Earthquake level not exceeding 8 class;
5. Without peril of fire, corrosion gas, explosion, vibration.
Techinical Data
| Item | Unit | Data | |
| Rated voltage | kV | 12 | |
| Rated insulation voltage | 1 min power frequency withstand voltage | kV | 65 |
| Lightning impulse withstand voltage(peak) | kV | 75 | |
| Rated frequency | Hz | 50/60 | |
| Rated current | A | 630,1250,1600,2000,2500,3150 | |
| Rated short-time withstand current | kV | 20,25,31.5 | |
| Rate peak withstand current | 50,63,80 | ||
| Rate short-circuit duration | S | 4 | |
| a.c. component of rate short-circuit breaking current | kA | 42 | |
| Rated short-circuit making current | kA | 50,63,80,100 | |
| Mechanical life | time | 10000 | |
| Permitted abrasion thickness of moving and fixed contacts | mm | 3 | |
| Arcing time | ms | ≤15 | |
Application
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