Product Overview
GGJ low-voltage intelligent reactive power compensation device is suitable for AC 50/60Hz, rated voltage 380/400V low-voltage distribution systems in power plants, substations, industrial and mining enterprises, commercial buildings, data centers, industrial parks, etc. It is used for automatic reactive power compensation, power factor improvement, line loss reduction, voltage stabilization, energy saving, and power supply quality improvement.
The device adopts a microcomputer intelligent controller that monitors power grid parameters in real time and automatically switches capacitor banks. It can stably raise the power factor to above 0.95, effectively reducing reactive power losses of transformers and lines, and increasing transformer output. It is a core device for energy saving, efficiency improvement, and compliance assessment in modern distribution systems.
The product strictly complies with GB/T 15576-2008 "Low-voltage reactive power compensation assemblies", GB 7251.1 and other standards, and has passed CCC certification. It is safe, reliable, and operates stably.
Operating Environment
1. Ambient temperature: -5℃ to +40℃, 24h average temperature ≤ +35℃
2. Altitude: ≤ 2000m
3. Relative humidity: ≤90% at +20℃, no condensation
4. Pollution degree: Level 3
5. Installation inclination: ≤5°
6. Environment: Indoor installation, no severe vibration, no corrosive gases, no conductive dust, no flammable or explosive hazards
Technical Parameters
| Parameter | Unit | Value |
| Rated working voltage | V | AC 380/400 |
| Rated insulation voltage | V | 660 |
| Rated frequency | Hz | 50/60 |
| Rated compensation capacity | kvar | 10–600 |
| Number of control circuits | circuits | 1–16 |
| Switching method | --- | Zero-crossing switching / Composite switch / Thyristor |
| Switching interval | s | 1–150 adjustable |
| Power factor | --- | ≥0.95 |
| Protection level | --- | IP30/IP40 |
| Dimensions (W×D×H) | mm | 600/800/1000×600/800×2200 |
| Applicable standards | --- | GB/T 15576-2008, GB 7251.1 |
Product Features
1. Intelligent and Precise Compensation
Microcomputer real-time sampling, automatic calculation of reactive power demand, cyclic switching, no oscillation, no over-compensation, no under-compensation, stable and compliant power factor.
2. Zero-Crossing Switching Without Impact
Adopts voltage/current zero-crossing triggering, no inrush current, no arcing during switching, extends capacitor life, protects grid equipment.
3. Multiple Protections for Higher Safety
Equipped with comprehensive protections including overvoltage, undervoltage, phase loss, harmonic over-limit, overtemperature, overload, and capacitor fault. Automatically exits and alarms upon abnormality.
4. Individual / Common Compensation Compatibility
Supports three-phase common compensation, individual phase compensation, and mixed compensation, suitable for unbalanced three-phase load scenarios, achieving more balanced compensation.
5. Power-Off Memory + Auto Restart
Parameters are not lost upon power failure. Automatically resumes operation when power returns, eliminating manual attendance and reducing maintenance effort.
6. Harmonic Compatible Design
Optional series reactors to suppress harmonics, prevent resonance, protect capacitors. Suitable for harmonic loads such as frequency converters and rectifiers.
7. Universal Structure for Easy Integration
Standardized cabinet design allows side-by-side integration with GGD, GCK, MNS and other cabinet types. Flexible incoming/outgoing wiring and convenient installation.
Core Values
· Improve power factor, avoid power factor penalties, and receive power factor rewards
· Reduce line losses by 10%–30%, significantly save electricity, lower electricity bills
· Increase effective output of transformers, reduce capacity expansion investment
· Stabilize bus voltage, protect precision equipment, extend service life
Improve power quality, reduce harmonic hazards, ensure power supply safety
Our Advantages
1. Fast selection and quotation, providing system compensation solution design
2. Standardized production, fastest delivery in 20 working days
3. Full technical support: installation and commissioning, operation and maintenance training, after-sales service
4. Passed CCC, ISO9001 and other authoritative certifications
5. High-quality capacitors and controllers, long-term stable and maintenance-free
Ordering Guidelines
Please provide the following information when ordering:
1. System rated voltage, transformer capacity, target power factor
2. Compensation capacity, number of circuits, switching method (composite switch/thyristor)
3. Whether harmonic control (reactor), individual phase compensation, or communication function is required
4. Cabinet dimensions, incoming/outgoing wiring method, distribution room layout
5. Special environments (high humidity, high altitude, corrosion) can be customized
