GY-AVC-PLUS Unified Power Quality Control Device
GY-AVC-PLUS is an advanced Unified Power Quality Control Device designed for industrial voltage stability and power quality improvement. Integrating voltage regulation, reactive power compensation, harmonic suppression and three-phase unbalance correction, it provides comprehensive solutions for unstable power environments.
Featuring stepless voltage regulation, a wide compensation range of -40% to +30%, and fast response within 20ms, GY-AVC-PLUS ensures stable load voltage under grid fluctuations. Its modular architecture supports multiple operating modes and seamless switching for uninterrupted power supply, making it ideal for industrial facilities requiring reliable voltage protection and power quality management.
•Advanced Voltage Stabilization — Provides dynamic voltage regulation for power fluctuations, supporting wide compensation ranges from -40% to +30% to effectively correct voltage sag and swell events.
•Integrated Power Quality Management — Combines voltage regulation, reactive power compensation, harmonic suppression and three-phase unbalance correction into a unified solution for comprehensive grid improvement.
•High-Performance Compensation — Delivers reactive power compensation accuracy ≥99% and harmonic suppression efficiency ≥95% (3rd–13th harmonics), improving power quality and equipment reliability.
•Fast Dynamic Response — Responds to voltage disturbances within 20ms, maintaining stable output voltage and reducing the impact of grid fluctuations on sensitive loads.
•Flexible Modular Design — Supports rated capacities from 30kVA to 500kVA with multiple operating modes, enabling flexible configuration for different industrial power systems.
•Reliable Power Continuity — Enables seamless switching operation to maintain uninterrupted power supply and protect critical loads from voltage instability.
Product Features
Overview
The unified power quality control device (GY-AVC-PLUS) mainly consists of a rectifier, inverter, compensating transformer, monitoring system, and AC/DC distribution. A comprehensive power quality control device with functions such as voltage sag (-40%) control, voltage sag (+30%) control, reactive power compensation, harmonic compensation, and three-phase imbalance compensation. It improves the power quality of the power grid while ensuring stable power supply to the load, avoiding economic losses caused by voltage fluctuations for production users.
Performance characteristics
1) Adopting new power electronics technology, voltage stepless regulation, high regulation accuracy, wide voltage regulation range, and no flicker during the regulation process.
2) Adopting modular design, it occupies a small space and is easy to maintain.
3) The compensation voltage can be adjusted according to user requirements, and the voltage adjustment speed can be set. The output voltage can be independently adjusted using phase separation control to adapt to severely unbalanced loads.
4) It can support various functions such as reactive power compensation, harmonic compensation, three-phase imbalance compensation, and precise voltage adjustment.
5) When the equipment fails, seamlessly switch to the power grid to ensure that the load power supply does not flash off.
6) Equipped with overload protection, software/hardware overcurrent protection, power grid overvoltage/undervoltage protection, over temperature protection, phase loss protection, frequency anomaly protection, short circuit protection, etc., to improve the reliability of power supply.
7) It can be equipped with various communication interfaces such as RS485 (supporting 4G/Wi Fi) to facilitate users in accessing device operation data to the monitoring system.
Technical Data
Appearance and Model Specifications
| Common models | Compensation capacity (kVA) | System voltage (V) | Cooling method |
| GY‑AVC‑PLUS‑0.22‑30k | 30 | 220 | forced air cooling |
| GY‑AVC‑PLUS‑0.4‑30k | 30 | 380 | |
| GY‑AVC‑PLUS‑0.4‑60k | 60 | 380 | |
| GY‑AVC‑PLUS‑0.4‑80k | 80 | 380 | |
| GY‑AVC‑PLUS‑0.4‑100k | 100 | 380 | |
| GY‑AVC‑PLUS‑0.4‑150k | 150 | 380 | |
| GY‑AVC‑PLUS‑0.4‑300k | 300 | 380 | |
| GY‑AVC‑PLUS‑0.4‑400k | 400 | 380 | |
| GY‑AVC‑PLUS‑0.4‑500k | 500 | 380 |
AC Parameters
| Parameter | Single-Phase (220V) | Three-Phase (380V) |
| Rated Power | 30kVA | 30kVA~500kVA |
| Rated Current | 135A | 45A~750A |
| Rated Voltage | AC220V | AC380V |
| Voltage Range | -40%~+30% | |
| Rated Frequency | 50Hz/60Hz | |
| Grid Structure | L/N+PE | Three-phase four-wire +PE |
| AC Overload Capability | 1.1 times the duration | |
| Output Voltage Accuracy | ±1% | |
| Function Selection | Voltage compensation + (reactive power compensation, harmonic compensation, reactive + harmonic compensation) | Voltage compensation + (reactive, harmonic, three-phase unbalance, reactive + harmonic, reactive + unbalance, reactive + unbalance + harmonic compensation) |
| Compensation Voltage Range | AC380 ±20% (-40%~+30% customizable) | |
| Transformer Ratio | 5:1 | |
| Harmonic Compensation Rate | 3-13th comprehensive harmonic compensation ≥95% | |
| Reactive Power Compensation Rate | Reactive power compensation ≥99% | |
| Three-Phase Unbalance Compensation Rate | / | Unbalance degree after compensation ≤5% |
| Allowable Grid Frequency | 45~63Hz | |
| Output Voltage THD Increment | ≤1% | |
| Compensation Response Time | <20ms | |
Transformer Parameters
| Parameter | Single-Phase | Three-Phase |
| Rated Capacity | 6kVA | 6kVA~100kVA |
| Type | Dry type, magnetic core made of stacked silicon steel sheets, frame grounded | |
| Overload Capability | 1.1 times longer running time | |
| Insulation | Insulation level H | |
| Transformation Ratio | 220:44 | |
| Design Temperature | Temperature rise ≤90K | |
| Applicable Standard | IEC 726 | |
System Parameters
| Altitude | <2000m; above 2000m, use in accordance with GB/T 3859.2 for derating |
| Ambient Temperature | -10~+50°C (reduced capacity above 40°C) |
| Relative Humidity | 90%, monthly minimum temperature 25°C, no condensation on the surface |
| Pollution Degree | Below Level I |
| Noise Level | ≤70dB |
| Degree of Protection | IP20 (IP54 customizable) |
User Manual
Frequently Asked Questions About GY-AVC-PLUS Unified Power Quality Control Device
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