Single Phase 21KV 670 Kvar High Voltage Shunt Capacitor Fuseless
21KV 670kvar High Voltage Capacitor Bank
1. Overview of 21KV 670kVar High Voltage Shunt Capacitor
High-voltage capacitors are mainly composed of lead-out porcelain bushings, capacitive element groups and shells. The shell is sealed and welded by thin steel plates, and the outlet porcelain sleeve is welded on the shell. The wiring terminal is led out from the outlet porcelain bushing. The capacitor element group (also called the core) in the shell is formed by connecting several capacitor elements. The capacitive element is made of capacitor paper, film-paper composite or pure film as the working medium, and aluminum platinum as the pole plate. In order to meet the withstand voltage requirements of capacitors of various voltage levels, capacitive elements can be connected in series or in parallel. The electric passenger component group of a single three-phase capacitor is connected into a triangle inside the shell. In high-voltage capacitors with a voltage of 10kV and below, each capacitive element is connected in series with a fuse, which serves as the internal short-circuit protection of the capacitor. Some capacitors are equipped with discharge resistance. When the capacitor is disconnected from the grid, it can be discharged through the discharge resistance. Generally, the residual voltage of the capacitor can be reduced to below 75V after 10 minutes.
2. Function of 21KV 670kVar High Voltage Shunt Capacitor
Medium voltage shunt capacitor/High voltage shunt capacitor are suitable for 50Hz or 60Hz AC power systems to improve the power factor of the power system, reduce line losses, improve the quality of the power supply voltage, and increase the active output of the transformer.
| Rated voltage |
21KV |
| Rated frequency | 50Hz |
| Rated Capacity | 670 kvar |
| Insulation level | 50/125KV |
| Internal fuse |
Fuseless
|
| Number of phases | Single-phase |
| Capacitance deviation | -3%～+5% |
| Package | Export packing |
| Loss tangent value (tanδ) | ≤0.0003 |
| Discharge resistance | The capacitor is equipped with a discharging resistor. After being disconnected from the grid, the voltage on the terminal can drop below 50V within 5 minutes |
3. Main features of 21KV 670kVar High Voltage Shunt Capacitor
1, Altitude:Less 1000m;Ambicnt Temperature:-40℃ to 40℃.
2, No violcnt mcchanical vibration, no harmful gas and vapor ,no electric,and cxplosive dust in location.
3‚ Power capacitor will work in the good ventilate condition, it would not permit to work in sealing and no ventilate condition.
4‚ Power capacitor connection wire should take soft conductive wire, the whole circuit connect well.
4. Applicable standard of 21KV 670kVar High Voltage Shunt Capacitor
IEC60871 and equivalent standard
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