Shanghai Zhiyou Electric Manufacture Co., Ltd.

Power Capacitor

Power Capacitors are mainly suitable for 50Hz or 60Hz AC power systems to improve power factor. Reduce reactive power losses, improve voltage quality, and fully utilize the efficiency of power generation and supply equipment. It is an energy-saving product recommended by the country.


Working conditions:
1. The altitude does not exceed 1000m, the ambient temperature is -40/B, and the maximum temperature for Class B is+45 ℃.
2. The installation site is free from severe mechanical vibrations, harmful gases and vapors, and conductive or explosive dust.
3. Power Capacitors should be ensured to operate under good ventilation conditions and are not allowed to operate under closed and unventilated conditions.
4. The wiring of capacitors should use flexible wires, and the entire circuit should have good contact.


Structural features:
1. The Power capacitor consists of a box shell and a core. The box shell is sealed and welded with thin steel plates, and the box shell is welded with an outgoing porcelain sleeve. The two sides of the box wall are welded with hanging brackets for installation, and one side of the hanging bracket is equipped with a grounding bolt.

2. The Power capacitor core is composed of several components and insulating parts stacked together. The components are made of composite media or full film media sandwiched between two aluminum foils as electrode plates, which are rolled and flattened. The components in the core are connected in a certain series or parallel manner to meet the requirements of different voltages and capacities.

3.Power Capacitors with internal fuses have a fuse in series with each component. When a component breaks down, the intact component connected in parallel discharges it, causing the fuse to quickly melt in milliseconds, cutting off the faulty component and allowing the capacitor to continue operating.

4. Three phase Power capacitors are connected in a star configuration.

5. Liquid dielectric is used in capacitors to impregnate solid dielectric and fill the gaps inside the capacitor. It has excellent electrical and physical properties and good compatibility with other materials in the capacitor.

6. For other requirements, please contact the professional manufacturer Shanghai Zhiyou Electric Manufacturing Co., Ltd.


Main technical parameters:

1. Rated voltage: 0.23kV, 0.4kV, 0.69kV, 1.14kV, 3.3kV, 6.3kV, 6.3kV, 6.6 kV, 6.6/√ 3 kV, 10.5 kV, 11 kV, 11/√ 3 kV, 12 kV, 12/√ 3 kV, 19 kV

2. Rated capacity: 30~334kvar, other voltage levels and capacities can be specially ordered.

3. Allowable capacity deviation:- 5~+15%

4. Tangent value of loss angle: Film paper composite medium with TG δ ≤ 0.08%, full film medium with TG δ ≤ 0.05%

5. Voltage endurance: The capacitor should be able to withstand 2.15 times the rated AC voltage or 4.3 times the rated DC voltage for 10 seconds without breakdown or flashover. Insulation level: 6kV level 30kV, 10kV level 42kV AC test lasted for 1 minute without breakdown or flashover.

6. Self discharge performance: The capacitor equipped with a discharge resistor inside reduces the residual voltage from √ 2UN peak to below 75V within 10 minutes after power failure.

7. Maximum allowable overvoltage: not exceeding 8 hours per 24 hours at 1.1 times the rated voltage, not exceeding 30 minutes per 24 hours at 1.15 times the rated voltage, not exceeding 5 minutes at 1.2 times the rated voltage, and not exceeding 1 minute at 1.3 times the rated voltage.

8. Maximum allowable current: The allowable current for operation shall not exceed 1.3 times the rated current, and the transient overcurrent shall not exceed 1.43 times the rated current considering the effects of overvoltage, capacitor positive deviation, and harmonics.

9. Compliant with standards: The product complies with the national standard GB/T 112024.1-2001 and the international standard IEC6087:1997.

Ordering Notice:
1. Please provide detailed parameters of the product.
2. Please provide us with as much product related information as possible regarding the product specifications, product drawings, product nameplates, product photos, etc. that you need to order, so that we can provide you with a faster and more accurate quotation.
3. Please provide the product specifications, product drawings, product nameplates, product photos, etc. that you need to order.
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