Main uses and scope of application

Self-frying low-voltage shunt capacitor is suitable for power system with dry frequency of 50H2 or 60Hz, and it is important to use dry power to improve power factor, reduce reactive power, improve voltage quality and tap transformer capacity.

Meet the standard: GB/T12747-2004.

Working conditions

1.After the capacitor is cut off from the power supply, it is necessary to ensure that the residual voltage of the capacitor is reduced to 10% of the rated voltage before it can be put into operation again. Usually, this time takes about 200s, so the controller should be selected with the function of locking time after being cut off. If a general controller is used, it is necessary to install a quick discharge facility. The equipotential switch can be used without this restriction.

2.The altitude does not exceed 2000m.

3.The ambient temperature category is -25/C, the lowest temperature is -25℃, and the highest temperature is Class C (the highest temperature does not exceed 50℃, the average temperature within 24 hours does not exceed 40℃, and the average temperature within one year does not exceed 30℃). The capacitor should be guaranteed to work under good ventilation conditions, and it is not allowed to work in a closed and unventilated environment. Set a variety of peripherals to meet different customer needs.

Architectural feature

1.Small size, light weight and convenient installation.

2.Using high-quality metallized polypropylene film as dielectric and unique structural design, the volume and weight of the capacitor are only 1/4 or 1/5 of the old product.

3.Low loss, less heating and low temperature rise.

4.By adopting the new gold spraying technology and the unique edge thickening technology of metallized film, the anti-surge capacity of the capacitor is greatly enhanced, the performance is stable, the working life is greatly prolonged, the energy consumption of the capacitor itself is reduced, the actual value is lower than 0.08%, the heating is less, the temperature rise is low, and the energy-saving effect is good.

5.excellent self-healing performance.

6.The local dielectric breakdown can heal itself quickly and return to normal work, which greatly improves the reliability.

7.built-in self-discharge resistor and safety device, safe and reliable to use.

8.no oil leakage, safety and environmental protection.

9.Microcrystalline wax is used as impregnating agent, which is solid at room temperature, and its dropping melting point is higher than 70℃. It has stable performance, no oil, safety and environmental protection during use, and not only has dry structural characteristics. But also has the advantages of impregnating capacitors. In addition, the unique impregnation process makes the capacitor run more reliably.

10.corrosion-resistant anti-counterfeiting shell, beautiful and firm

11.After special double anti-corrosion treatment, the printed iron shell has greatly improved corrosion resistance, unique anti-counterfeiting design, fine and beautiful appearance.

Main technical parameters

1.Rated voltages: 230V, 400V, 450V, 480V, 525V, 690V, 750V, 1200V. Other voltages can be specially ordered.

2.Rated capacity: 1-60kvar of 0.4-0.69kV, and the capacity of other voltage levels shall be determined separately.

3.Rated frequency: 50Hz or 60Hz.

4.Capacity allowance: -5%-+10%.

5.Tangent value of loss angle: tan5s0.1% at 20C.

6.Withstand voltage: 2.15 times the rated voltage between poles for 5 seconds, 2Un+2kV or 3kV between poles, whichever is higher, for 10 seconds, without permanent breakdown or flashover.

7.Maximum allowable overvoltage: 1.1 times the rated voltage, no more than 8 hours in every 24 hours; 1.15 times the rated voltage, no more than 30 minutes in every 24 hours; 1.2 times the rated voltage, no more than 5 minutes; 1.3 times the rated voltage, no more than 1 minute.

8.Maximum allowable current: The allowable current shall not exceed 1.3 times the rated current. For transitional overcurrent, considering the influence of overvoltage, positive deviation of capacitor and harmonics, the maximum filtered overcurrent shall not exceed 1.43 times the rated current.

9.Connection: △ angle connection, Y-star connection, Y-star connection with neutral point lead-out, Sichuan three-section connection, single-phase connection and other connections are agreed upon according to user's needs.

10.Self-discharge performance: After the capacitor is cut off for 3 minutes, the residual voltage drops from /2Un to below 50V.

11.compliance with standards: GB/T12747-2004, 1EC60831:2002.