GTXGN-12 Solid Insulated Ring Main Unit
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GGJ Low Voltage Reactive Power Intelligent Compensation Device
GGJ Low Voltage Reactive Power Intelligent Compensation Device
The GGJ Low Voltage Reactive Power Compensation Device is designed to improve power factor, reduce reactive power losses, and enhance power quality in low-voltage distribution systems. It helps increase the actual load capacity of transformers and reduces energy waste in industrial, commercial, and building power networks.
When used together with suitable reactors, the device can effectively suppress harmonic amplification and absorb a large portion of harmonic current, helping the system meet power quality standards. With intelligent microcomputer control, automatic compensation, and multiple protection functions, it is an ideal solution for substations, workshops, and distribution systems with fluctuating loads and unstable reactive power demand.
Key Features:
Intelligent Control: Equipped with a smart controller, the device offers comprehensive functionality and reliable performance. It can automatically improve the power factor to above 0.9.
Real-Time Display: The device provides a real-time display of the grid’s power factor, showing both lagging (0.00-0.99) and leading (0.00-0.09) values.
Comprehensive Protection: It includes multiple protection features against over-voltage, over-harmonics, over-compensation, system faults, phase loss, and overload.
Memory Function: The device retains set parameters even during power outages. Once the power is restored, it automatically resumes operation without manual intervention.
Compensation Options: It can employ phase-by-phase compensation or mixed compensation based on the balance of grid loads.
Strong Anti-Interference: The device is capable of resisting interference pulses of up to 2000V directly from the grid, exceeding national professional standards.
Why Choose GGJ Low Voltage Reactive Power Compensation Device
- Improves Power Factor Effectively: The GGJ device intelligently tracks reactive power changes and automatically compensates to improve the system power factor, helping reduce electricity waste and improve overall energy efficiency.
- Reduces Line Losses and Transformer Burden: By compensating reactive power in time, the system lowers transmission losses and increases the actual load capacity of transformers and low-voltage distribution networks.
- Supports Harmonic Mitigation: When used with suitable reactors, the device helps prevent harmonic amplification, absorbs a large portion of harmonic current, and improves power quality in systems with nonlinear loads.
- Intelligent Automatic Control: Equipped with a microcomputer controller, the device supports automatic compensation, real-time monitoring of power factor, and adjustable switching time for stable and efficient operation.
- Comprehensive Protection Functions: The system includes protection against over-voltage, over-harmonics, over-compensation, phase loss, overload, and other operating faults, helping ensure safe and reliable performance.
- Suitable for Variable Load Applications: It is especially suitable for substations, workshops, industrial plants, and building power systems with frequently changing loads and unstable reactive power demand.
Main Components
Capacitors: Self-healing low-voltage shunt power capacitors.
Switching Devices: AC contactors, composite switches, or thyristor switches.
Series Reactors: Used to suppress harmonics and prevent switching inrush current, with reactor rates of 6%, 7%, and 14%.
Fuses / Circuit Breakers: Short-circuit protection for branch circuits.
Reactive Power Compensation Controller: Automatic sampling and cyclic switching.
Cabinet Enclosure: Can be designed as a standard low-voltage cabinet, with the same dimensions and appearance as the main switchgear cabinet.
Operating Conditions
Ambient Temperature: -5°C to +40°C, with the average temperature within 24 hours not exceeding 35°C.
Relative Humidity: ≤85%, with no condensation, and free of corrosive, flammable, or explosive gases.
Altitude: Not exceeding 2000 m above sea level.
Installation Site: Indoor installation with good ventilation, free from severe vibration and excessive dust.
Application
The GGJ Low Voltage Reactive Power Intelligent Compensation Device is widely used in low-voltage distribution systems that require power factor improvement, reactive power compensation, harmonic control, and energy-saving operation. It is especially suitable for applications with fluctuating loads, frequent motor starts, or unstable reactive power demand.
Typical application scenarios include industrial plants, production workshops, commercial buildings, shopping malls, hotels, hospitals, office buildings, residential distribution rooms, and public infrastructure projects. It can also be used in substations, manufacturing facilities, water treatment plants, mining operations, petrochemical systems, and other electrical networks where improved power quality and reduced line losses are important.
When combined with suitable reactors, the device is also suitable for power systems with nonlinear loads, such as variable frequency drives, welding equipment, elevators, HVAC systems, compressors, and other equipment that may generate harmonics. By improving the power factor, reducing transformer burden, and suppressing harmonic impact, the GGJ cabinet helps enhance the overall efficiency, stability, and reliability of the distribution system.
Model meaning
Technical Parameters
Overall and mounting dimensions(mm)（Reference）
Model meaning
| GGJ Low Voltage Reactive Power Compensation Device | G: | Cabinet-type structure |
| G: | Fixed installation | |
| J: | Capacitor for reactive power compensation |
Technical Parameters
The GGJ low voltage reactive power compensation device is designed for 380V–660V low-voltage distribution systems and supports compensation capacities from 60 to 600kvar. With intelligent microcomputer control, adjustable switching time, multiple protection functions, and optional phase-by-phase or mixed compensation modes, it is widely used to improve power factor, reduce reactive losses, suppress harmonic impact, and enhance overall power quality in industrial and commercial power systems.
| Item | Standard Parameters |
|---|---|
| Rated Voltage | AC 400V / 450V, 50Hz |
| Rated Insulation Voltage | 660V / 1000V |
| Rated Frequency | 50Hz |
| Single Circuit Capacity | 5kvar, 10kvar, 15kvar, 20kvar, 30kvar |
| Total Cabinet Capacity | 60–360kvar (common options: 120 / 180 / 240kvar) |
| Switching Method | Contactor switching / Thyristor (contactless) switching |
| Switching Control | Automatic reactive power compensation controller (automatic power factor control) |
| Protection Functions | Short-circuit protection, overcurrent protection, overvoltage protection, undervoltage protection, harmonic suppression |
| Cabinet Structure | Compatible with MNS: withdrawable / fixed type, protection degree IP30–IP40 |
| Standards | GB/T 15576, GB 7251.1, IEC 61439 |
Overall and mounting dimensions(mm)（Reference）
Custom GGJ Reactive Power Compensation Solutions for Your Project
(The values can be customized according to local project requirements.)
If you have specific requirements for the parameters, structure, or configuration of the GGJ low voltage reactive power compensation device, please contact us. Our team of account managers, technical engineers, and product consultants will assess your application scenario, reactive power demand, harmonic conditions, installation environment, and project timeline to provide a tailored compensation solution.
We can customize rated voltage, compensation capacity, compensation circuit quantity, control method, capacitor bank configuration, reactor matching, cabinet structure, protection level, and other key design details to ensure reliable performance in your low-voltage power distribution system.
FAQ
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