summary

The self-healing low-voltage shunt capacitor is suitable for power system with frequency of 50Hz or 60Hz. It is mainly used to improve power factor, reduce reactive power loss, improve voltage quality, excavate transformer capacity, etc. It is the best power saving productrecommended by the state.

Working conditions

After the capacitor is cut off from the power supply, it must be ensured that the residual voltage of the capacitor is reduced to 10% of the rated voltage before it can be put into operation again. Normally, this time will take about 200s, so the controller with the function of re putting locking time after the capacitor is cut off shall be selected. If a general controller is used, a separate quick discharge facility shall be installed. This limit is not applicable to the equipotential switch.

The altitude shall not exceed 2000m.

The ambient temperature category is- 25/°C, the minimum temperature is - 25°C , the maximum temperature is class C, (the maximum temperature is not more than 50 °C，the average temperature within 24 hours is not more than 40°C，and the average tem perature within one year is not more than 30 °C ). The capacitor shall be guaranteed to work under good ventilation conditions, and it is not allowed to work under airtight and airtight environment.

Model meaning

Main technical indicators

1. Service conditions: ambient temperature: - 25°C ~ + 50 °C , humidity≤85%, altitude below 2000m.

2. Rated voltage: 250VAC, 400VAC, 525vac, 690vac, 750vac, 1050vac.

3. Rated capacity: 1-100kvar

4. Capacity tolerance: -5- + 10%

5. Tangent value of loss angle: TG δ≤0.1% at 20°C  under rated power frequency voltage.

6. AC withstand voltage: 2.15 times of rated voltage between poles for 10 seconds, 3KV between poles for 10 seconds.

7. Maximum allowable overvoltage: 1.1 times of rated voltage.

8. Maximum allowable overcurrent: 1.30 times of rated current.

9. Self discharge: add √(2un) DC voltage to the capacitor, disconnect the power supply for 3 minutes, and the residual voltage will be reduced by 75V or less.

10. Standard: gbi2747 -2004 iec60831-1996

Main feature

1. Small volume and light weight: due to the use of metallized polypropylene film as the medium, the volume and weight are only 1/4 and 1/5 of the old products.

2. Low loss: the actual value is lower than 0. 1%, so the capacitor has low energy consumption, less heat, low temperature rise,long working life and good energy saving effect.

3. Excellent self-healing performance: the partial breakdown of medium caused by over-voltage can quickly self healing, resume normal operation, and greatly improve the reliability.

4. Safety: built in self discharge resistance and safety device. The built-in discharge resistance can automatically discharge the electric energy on the capacitor. When the capacitor fails, the safety device can disconnect the power supply in time to avoid further development of the fault and ensure the safety of use.

5. No oil leakage: the capacitor adopts advanced semi-solid impregnant, the drop melting point is higher than 70°C , no oil leakage in the use process, avoiding environmental pollution, and the capacitor will not fail due to oil loss.

Dimensions

Main Specifications

In addition, there are various voltage levels, such as 0.48kv, 0.525kv, etc. the space here is limited, so we will not list them one by one. When ordering, please inform the voltage level, reactance rate and capacitance capacity.