Summary

The ADDMD series self-healing parallel capacitors are suitable for power frequency AC power systems with a nominal voltage of 1000 V and below. They are used to improve power factor, reduce reactive power loss in transmission lines, and improve voltage quality.

Our company produces self-healing parallel capacitors using metalized polypropylene film with excellent self-healing performance and absorbing domestic and foreign processes. We strictly follow the national standard GB/T 12747.1 for production. Our company has complete production equipment, strong technical strength, and is one of the reliable manufacturers of self-healing low-voltage parallel capacitors in China.

Functional characteristics

Production equipment, excellent materials, and unique production processes fully guarantee the high quality of products.

The design ensures that the product can adapt to high ambient temperatures and places with significant fluctuations in system voltage.

Equipped with discharge resistors and overvoltage protection devices. When the internal pressure of the capacitor increases or a fault occurs, the protective device can automatically disconnect it from the power supply, avoiding the expansion of accidents.

Design innovative installation feet to make user installation more convenient. Unique lead out terminals for easy wiring, reliable connection, and excellent protection.

Small in size, light in weight, and aesthetically pleasing in appearance.

Model definition

Main parameter

☆ Loss angle tangent value: below 0.0012 at rated power frequency voltage.

☆ Capacitance deviation: The difference between the measured value and the rated value of the capacitor shall not exceed -5% to+10%, and the ratio of the maximum to minimum capacitance measured between any two line terminals in a three-phase capacitor shall not exceed 1.08.

☆ Withstand voltage: between poles: power frequency 2.15Un, 2s; Pole to shell: Apply a voltage of 3.6kV/5s to products with a rated voltage of 600V or below; Apply a voltage of 7.2kV/5s to products with a rated voltage of 600V or above.

☆ Maximum allowable overvoltage: 1.1Un, not exceeding 8h every 24h.

☆ Maximum allowable overcurrent: 1.3ln;

☆ Self discharge characteristics: The capacitor is equipped with a discharge device, which can reduce the remaining voltage of the capacitor from √ 2Un to 75V or below within 3 minutes of disconnecting the power supply; The ambient air temperature during use is -25~+50 ℃.

☆ Relative humidity: ≤ 50% RH at 40 ℃, ≤ 90% RH at 20 ℃.

☆ Altitude: Used below 2000m.

☆ Executive standard: GB/T12747.1

Instructions for use

Capacitors should be transported in their original factory packaging state as much as possible, and should be handled with care during transportation

Capacitors should be stored indoors in a dry and non corrosive environment.

Before using capacitors, users should first check whether the nameplate model matches the purchased product model.

☆ Capacity testing: It is required to perform according to the withstand voltage, and instruments with a relative error of no more than 2% should be used for measurement.

☆ Withstand voltage test: The applied test voltage is 75% of 4.3.

The installation site should not be exposed to direct sunlight, should not be soaked in rain, and should avoid excessive dust and severe vibration. The distance between the sites should be greater than 30mm; When the ambient temperature is high in summer, effective measures should be taken to ensure good ventilation and heat dissipation.

Before installation, it is necessary to fully consider the factors of voltage rise caused by the capacitor being put into operation, in order to prevent the capacitor from operating for a long time under overvoltage.

Before installing capacitors, attention must be paid to detecting voltage waveforms and network characteristics. If there are harmonic sources (such as installing large rectifiers, frequency converters, intermediate frequency furnaces, arc furnaces, electrolytic plating equipment, etc.), corresponding measures should be taken to suppress them according to the frequency and content of harmonics.

When capacitors are connected in parallel with induction motors, it is recommended to select distribution containers based on the capacitor current being less than 90% of the motor's no-load current.

Flexible copper wire should be used as much as possible for the wiring at the circuit terminals and grounding terminals of the capacitor, and good contact should be ensured. It is recommended that users regularly inspect the capacitor wiring terminals to prevent damage outside the capacitor caused by poor contact.

The time interval between capacitor removal and re operation should be greater than 3 m in (self discharge time), otherwise high overvoltage may occur and damage the capacitor;

Capacitors should use dedicated capacitor switching switches, with switch specifications based on 1% of the rated current of the controlled capacitor 3-1 5 times the range is determined by reference.

Ordering Notice

Users must provide the rated voltage, rated capacitance, number of phases, and other parameters of the product

Users should try to provide some characteristics of the place of use.

For example: ADDMD0.45-30-3

Order cylindrical series capacitors with a rated voltage of 450V, a rated capacity of 30kvar, and 3 phases.

Main product specifications and data table notes:

The installation dimensions of single-phase products are the same as those of three-phase products of the same specifications.

Our company can customize other specifications of products for users. If you have special needs, please negotiate and place an order.