Wholesale Self - Healing Low - Voltage Parallel Capacitor Common Compensation Type Manufacturers, Exporters

Working conditions and environmental requirement

● After the capacitor is disconnected from the power supply, it must be ensured that the residual voltage of the capacitor drops to 10% of the rated voltage before it is allowed to be re - energized. Usually, this time is about 200 seconds. Therefore, when selecting a controller, pay attention to choosing a controller with the function of re - energization locking time. If a general controller is used, a fast - discharge device needs to be additionally installed.

● The installation and use of the capacitor should be at an altitude not exceeding 2000 meters. The ambient temperature should be within the range of -25°C to +50°C (the average temperature within 24 hours ≤ 40°C, and the average temperature within one year ≤ 40°C). Moreover, the capacitor must operate under well-ventilated conditions, and it is prohibited from being used in a sealed and unventilated environment.

Product Description

Main features and applications

  • This product is made by winding the highest-quality and high-temperature-resistant domestic metallized film. It has good self-healing performance, small capacitance loss and low dielectric loss.
  • The inside of the capacitor is connected with red copper foil. Compared with the traditional multi-core flexible cable, the welding is more firm and the line loss is lower. It has stronger heat dissipation and current-carrying capabilities, a longer service life, and can withstand high surge currents (200IN).
  • Using new-type can-sealing equipment and high-purity microcrystalline wax, the product has excellent sealing performance, without oil leakage, pollution or corona discharge. The anti-corrosive metal shell does not require painting. It is beautiful, sturdy, and convenient for installation and transportation.
  • This product is mainly suitable for being connected in parallel with loads in the AC power system with a rated voltage of 1000V and below and a power frequency of 50Hz. It can improve the power factor of the system, reduce line losses, improve the voltage quality, and give full play to the efficiency of power generation and power supply equipment.

Main technical parameters

Parameter Item Technical Specifications
Rated voltage (UN) (450~750) V a.c. (Other voltages can be specially customized)
Capacity range (CN) 5 kVar to 60 kVar (Other capacities can be specially customized)
Allowable deviation of capacity -5%~+10%
Rated frequency (fN) 50Hz/60Hz
Allowable ambient temperature -25℃~C (C:50℃)
Tangent of loss angle tanδ ≤0.0015 (20℃)
inter-electrode testing voltage 2.15UN (5s, 20°C±5°C)
Test voltage between electrode and shell 3kVa.c. (10s, 50Hz, 20°C±5°C)
Maximum allowable overvoltage 1.1 UN: No more than 8 hours within 24 hours.
1.15 UN: No more than 30 minutes within 24 hours.
1.2 UN: No more than 5 minutes within 2 months.
1.3 UN: No more than 1 minute within 1 month.
Maximum allowable current value ≤1.3IN, excessive overcurrent shall not exceed 1.43IN at most
Self-discharge characteristics After the capacitor is disconnected from the power supply for 3 minutes, the residual voltage drops below 50V
Compliance with standards GB/T12747-2017, IEC60831:2014

Frequently Asked Questions

What are the primary applications of this capacitor?

This product is mainly suitable for being connected in parallel with loads in the AC power system with a rated voltage of 1000V and below with a power frequency of 50Hz to improve the power factor, reduce line losses, and optimize voltage quality.

What customized options are available for voltage and capacity?

While the standard rated voltage ranges from 450V to 750V a.c. and capacity ranges from 5 kVar to 60 kVar, other voltages and capacities can be specially customized to meet your specific system requirements.

How does the capacitor perform regarding safety and sealing?

It features new-type can-sealing equipment and high-purity microcrystalline wax, ensuring excellent sealing performance with no oil leakage, pollution, or corona discharge. It also has good self-healing performance.

What is the standard compliance of these capacitors?

These capacitors are fully compliant with GB/T12747-2017 and IEC60831:2014 quality and safety standards.

How does the discharge function work after disconnection?

The capacitor features self-discharge characteristics that allow the residual voltage to drop below 50V within 3 minutes after being disconnected from the power supply.

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