Low-Voltage Reactive Power Intelligent Compensation Device
Product Overview
The GGJ low-voltage intelligent reactive power compensation device effectively improves the power factor of electrical loads, reduces line losses, and enhances the actual loading capacity of transformers, delivering significant energy-saving benefits. Moreover, by incorporating specific reactors into the system, it can effectively suppress harmonic amplification and absorb most harmonic currents, ensuring that the total harmonic distortion of voltage and the limits on individual harmonic current components comply with national standards, thereby achieving the objective of harmonic mitigation. In contrast, using conventional contactors to switch capacitor banks results in large inrush currents, slow compensation response times, high maintenance costs, and a short service life. Therefore, we recommend that users give priority to dynamic reactive power compensation devices in the following applications: low-voltage distribution networks in substations, production workshops of industrial and mining enterprises, and civil buildings—particularly in transmission and distribution systems where load conditions frequently fluctuate and reactive power is inherently unstable.
This product complies with standards such as GB/T 15576-2008 “Low-Voltage Complete Reactive Power Compensation Equipment” and IEC 60439 “Low-Voltage Switchgear and Controlgear Assemblies.”
Terms of Use
● Ambient temperature: -5°C ~ +40°C;
● Ambient relative humidity: not more than 90% (at 20°C);
● Altitude: not exceeding 2,000 m;
● The surrounding environment shall be free of explosive hazards, corrosive gases that can damage metals, and conductive dust; the installation site shall not be subject to severe vibration; and it shall be protected from rain and snow.
Technical Features
● Automatically compensates reactive power to improve the power factor;
● Enhance equipment efficiency and reduce capital investment;
● Reduce distribution line losses and transformer losses;
● Improve voltage quality and enhance the reliability of power supply.
Main Features
● Excellent versatility: This compensation cabinet can be combined with various domestic and international switchgear cabinets, such as MNS, GCK, GGD, and others.
● The capacitor compensation configuration is diverse and flexible: it supports Y-type compensation, A-type compensation, and a Y+A combined compensation scheme.
● Diverse communication options: Equipped with RS-232/485 communication interfaces, and supports long-distance communication via wireless data transmission modules or DSHRS modules;
● Precise and safe control: employs zero-voltage triggering, eliminating inrush current during switching-in and preventing high-voltage arcing during switching-out.
● Long service life: Under maintenance-free conditions, the service life exceeds 100,000 hours.
Scope of Application
The GGJ capacitor cabinet is suitable for various damp and dusty workshops. It is designed for use in textile, metallurgical, chemical, mining, and mechanical enterprises, serving as part of low-voltage distribution systems with a 50 Hz AC supply, rated voltage of 380 V or 660 V, and rated current up to 630 A, configured in three-phase three-wire, four-wire, or five-wire arrangements for power and lighting distribution. Additionally, it can be employed as a partial control component in low-voltage control systems.
Functions and Features
● Equipped with an intelligent controller for comprehensive functionality and reliable performance, with automatic compensation; capable of raising the power factor to above 0.9.
● Real-time display of grid power factor, with a display range of: lagging (0.00–0.99), leading (0.00–0.99);
● Features comprehensive protection functions, including overvoltage, overharmonics, overcompensation, system fault, phase loss, and overload;
● The system retains the configured parameters; power outages will not result in data loss, and upon restoration of grid power, the system automatically resumes operation without requiring on-site personnel.
● Phase-specific compensation or hybrid compensation may be adopted based on the grid load balance;
● Strong anti-interference capability, able to withstand disturbance pulses with an amplitude of 2000 V directly injected from the power grid—exceeding the national professional standard.
Technical Specifications
Project |
Unit |
Parameters |
System voltage |
V |
Below AC450 |
Switching time |
milliseconds |
t≤20 |
Inrush current |
In |
<25 |
Rated frequency |
Hertz |
50±50% |
Sampling current |
A |
0~5 |
Device power consumption |
W |
≤15 |
Sensitivity |
milliampere |
100 |
Outline and Installation Dimension Drawing (mm)
Contact Us
0411-83167110
No. 95, West Section of Shiji Road, Pulandian District, Dalian City, Liaoning Province
Leave a message to get a product quote.
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