Cylindrical Low-Voltage AC Capacitor

Product Introduction

Designed for reactive power compensation and power factor improvement in low-voltage electrical systems, the Cylindrical Low-Voltage AC Capacitor provides a reliable solution for power distribution networks, substations, and industrial electrical installations.

Featuring a compact cylindrical structure with an aluminum housing, this capacitor is designed for stable operation in demanding electrical environments. Its dry-type resin potting technology helps protect internal components, while the aluminum cover with rolled-edge sealing provides a secure enclosure structure.

With rated voltages ranging from 250V to 1000V AC and rated capacities from 10 to 50 kvar, the Cylindrical Low-Voltage AC Capacitor can be selected according to different reactive power compensation requirements. It supports operating temperatures from -45℃ to +70℃ and is designed for an expected service life of up to 100,000 hours under specified operating conditions.

Suitable for low-voltage power distribution systems, industrial equipment, and substation compensation applications, this capacitor helps reduce reactive power demand, improve power factor, and support more efficient utilization of electrical power.

Key Product Features and Advantages

1. Reliable Reactive Power Compensation

Designed for low-voltage AC power systems, the capacitor helps compensate for inductive reactive power, improve power factor, and optimize electrical energy utilization.

2. Wide Rated Voltage Range

Supports rated voltages from 250V to 1000V AC, providing flexibility for different low-voltage electrical system configurations.

3. Multiple Capacity Options

Available in rated capacities from 10 to 50 kvar to accommodate different reactive power compensation requirements in industrial and power distribution applications.

4. Durable Aluminum Housing

The cylindrical aluminum enclosure provides mechanical protection and supports heat dissipation during operation. Multiple diameter options are available for different installation arrangements.

5. Dry-Type Resin Potting

The internal components are protected using a dry-type resin potting process, helping improve insulation protection and structural stability.

6. Rolled-Edge Sealing Structure

The aluminum cover features rolled-edge sealing to provide a secure enclosure and protect internal components.

7. Wide Operating Temperature Range

Designed to operate in ambient temperatures from -45℃ to +70℃, making it suitable for electrical installations exposed to varying temperature conditions.

8. Flexible Installation Options

The capacitor can be fixed using grounding bolts at the bottom of the aluminum housing or through mounting feet, allowing adaptation to different equipment installation structures.

9. Long Expected Service Life

Designed for an expected lifespan of up to 100,000 hours under specified operating conditions, supporting long-term operation in power compensation systems.

Product Technical Specifications

Structural Design and Manufacturing Features

Aluminum Cylindrical Enclosure

The cylindrical aluminum housing provides a compact structure for electrical equipment installation. Available diameters of 86 mm, 96 mm, 116 mm, and 136 mm allow selection according to the required capacity and installation space.

Aluminum Cover with Rolled-Edge Sealing

The aluminum cover is secured through a rolled-edge sealing structure, helping maintain enclosure integrity and protect the internal capacitor components.

Dry-Type Resin Potting Technology

The capacitor adopts dry-type resin potting to provide internal insulation protection and structural support. This design is suitable for applications requiring stable electrical performance and reliable operation.

Grounding and Mounting Structure

Installation can be completed using grounding bolts located at the bottom of the aluminum housing or through dedicated mounting feet. The appropriate mounting method can be selected according to the equipment layout and installation requirements.

Product Applications

The Cylindrical Low-Voltage AC Capacitor is designed for reactive power compensation in various electrical power systems.

• Power Distribution Networks: Used in low-voltage distribution systems to compensate for reactive power and improve power factor.

• Substations: Applied in reactive power compensation installations to support voltage and power quality management.

• Industrial Manufacturing: Suitable for industrial electrical systems with inductive loads, including motors, transformers, and production equipment.

• Mining and Industrial Enterprises: Supports power factor improvement and electrical energy management in industrial and mining facilities.

• Power Compensation Cabinets: Can be integrated into low-voltage capacitor banks and reactive power compensation equipment.

• Electrical Infrastructure: Suitable for low-voltage AC systems requiring reactive power management and improved electrical utilization.

Why Choose Wuxi Power Filtering Co., Ltd.?

Wuxi Power Filtering Co., Ltd. is a technology-driven enterprise specializing in the research, development, and production of power electronic capacitors, power filtering devices, and reactive power compensation equipment.

Originally developed from the Power Filtering Research Institute of Wuxi Power Capacitor Co., Ltd., the company completed its shareholding reform in 1994 and has since built extensive experience in capacitor manufacturing and power quality management.

Established Manufacturing Capabilities

• Built-up production and operational area of approximately 20,000 square meters.

• Registered capital of RMB 20 million.

• Production base located in Tongling, Anhui Province.

• Experienced technical and engineering team, including senior engineers and industry specialists.

• Manufacturing and development capabilities covering various power capacitors and compensation devices.

Strong Technical Research Background

The company maintains long-term cooperation with leading research institutions and universities, including:

• China Electric Power Research Institute.

• China Southern Power Grid Electric Power Research Institute.

• Tsinghua University.

• Huazhong University of Science and Technology.

• North China Electric Power University.

These collaborations support ongoing product development, engineering improvements, and the application of advanced capacitor technologies.

Industry Recognition and Project Experience

Wuxi Power Filtering Co., Ltd. has been recognized as a National High-Tech Enterprise and a Wuxi City Specialized, Sophisticated, and Innovative Enterprise. It also operates a provincial-level Engineering Technology Research Center and a municipal-level Enterprise Technology Center.

Its products and solutions have been supplied to major power and industrial enterprises, including State Grid, China Southern Power Grid, and CRRC Group, as well as industrial and mining customers.

Comprehensive Power Quality Solutions

Beyond capacitor manufacturing, the company provides products and technical solutions covering:

• Power electronic capacitors.

• Pulse capacitors.

• Self-healing high-voltage power capacitors.

• Power filtering devices.

• Shunt capacitor compensation installations.

• Reactive power compensation and power quality management systems.

Its products are used in power systems, industrial manufacturing, rail transit, aerospace, and defense-related applications.

Ordering and Customization Information

To identify a suitable low-voltage AC capacitor for your electrical system, buyers are encouraged to provide the following information:

• Required rated voltage (250–1000V AC).

• Required rated capacity (10–50 kvar).

• Preferred housing diameter (86 / 96 / 116 / 136 mm).

• Installation method: grounding bolts or mounting feet.

• Operating temperature and installation environment.

• Application type, such as power distribution, substation, or industrial reactive power compensation.

• Required quantity and project specifications.

Providing detailed electrical parameters and installation requirements helps determine a suitable capacitor configuration for the intended application.

Reliable Low-Voltage Capacitor Supply

Selecting an appropriate capacitor is essential for effective reactive power compensation, power factor improvement, and stable operation of low-voltage electrical systems.

With established R&D capabilities, manufacturing experience, and technical cooperation with leading research institutions, Wuxi Power Filtering Co., Ltd. provides capacitor products and power quality solutions for industrial and electrical infrastructure applications.

Contact us for technical specifications, product selection assistance, and procurement inquiries about the Cylindrical Low-Voltage AC Capacitor.