Product Description

BGMJ series self-healing low-voltage shunt capacitors are suitable for power frequency AC power systems with a nominal voltage of 1000V and below. They are used to increase power factor, reduce reactive power loss, and improve voltage quality.

Main Feature

1. Aluminum shell with excellent oxidation treatment,
Shape design, easy installation and small space.
2. The unique design ensures that the product can adapt to places with higher ambient temperature and larger system voltage fluctuations.
3. Built-in discharge resistance and safety device. When the internal pressure of the capacitor increases or a fault occurs, the safety device can make it automatically disconnect from the power supply, avoiding the accident.

Model Meaning

Usage notice

Transportation and storage
1. The capacitor should be transported in the original packaging state as far as possible, and should be handled with care when handling;
2. The capacitor should be kept in a dry and non-corrosive gas room; user acceptance inspection
1. Before using the capacitor, the user should first check whether the nameplate model matches the model of the purchased product;
2. Capacity measurement: It is required to perform according to 4.2, and an instrument with a relative error of not more than 2% is used for measurement:
3. Withstand voltage test: the applied test voltage is 75% of 4.3;

The main technical parameters

1. Loss angle tangent value: under power frequency rated voltage is less than 0.0012;
2. Capacitance deviation: the difference between the measured value of the capacitor and the rated value does not exceed 0 ~ + 10%, and the measured capacitance between any two line terminals in the three-phase capacitor is not greater than 1.08;
3. Allow no less than overvoltage: 1.1Un, no more than 8h in every 24h;
4. Allow no more than over current: 1.3In;.
5. Self-discharge characteristics: The capacitor is equipped with a discharge device, which can make the capacitor fall within 2 minutes after the power is turned off, and the residual voltage drops from 2Un to 75V or below;
6. Executive standard: IEC60831-1996, GB / T12747-2004

Install and run

1. The capacitor is installed indoors and used below 2000m above sea level;
2. The ambient air temperature during use is -25 ~ + 50 * C. Humidity is less than 85 percent; Note: It can be customized for users in low temperature environment 40 ° C ~ + 50 ° C products.
3. The installation site should not be exposed to direct sunlight, avoid excessive dust and violent vibration, and the distance between them should be greater than 30mm; when the ambient temperature in summer is high, it is wet by rain, and effective measures should be adopted
To ensure good ventilation and heat dissipation;
4. Before installation, the voltage rise caused by the capacitor must be fully considered to prevent the capacitor from running for a long time under overvoltage;
5. Before installing the capacitor, pay attention to the voltage waveform and network characteristics.If there is the influence of harmonic sources (such as the installation of large rectifiers, frequency converters, intermediate frequency furnaces, etc.), the
Regarding the degree of severity, take corresponding measures to limit;
6. When the capacitor is connected in parallel with the induction motor, it is recommended to match the capacitor according to the capacitor current is less than 90% of the motor no-load current;
7. The wiring at the capacitor line terminal and the ground terminal should use soft copper wire as much as possible, and ensure good contact. It is recommended that users regularly check the capacitor terminal to prevent poor contact.
Cause damage other than capacitors;
8. The time interval between capacitor removal and re-injection should be greater than 3min (self-discharge time), otherwise it may produce a high overvoltage and damage the capacitor;
9. The capacitor should use CJ19 type switching capacitor AC contactor, the contactor specification is determined according to the range of 15 ~ 1.8 times of the rated current of the controlled capacitor.

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The user must provide the product rated voltage, rated capacitance, phase number and other parameters.
The user must try to provide some characteristics of the place of use.

Main product model specifications and data sheets (see attached table)

Note: 1. The appearance installation size of single-phase products is the same as that of three-phase products with the same specifications;
          2. The company can customize other specifications for users. If you have special requirements, please negotiate a loan.