Name: GY-SVG-Cabinet Static Var Generator - GEYA Electrical Equipment Supply
SKU: GY-SVG-Cabinet

Description

GY-SVG-Cabinet Static Var Generator Overview

System Diagram

The GY-SVG-Cabinet is a cabinet-type Static Var Generator (SVG) designed for dynamic reactive power compensation across AC220V to AC800V grids, with rated capacity from 50kvar to 900kvar. Built around a DSP+CPLD all-digital control core and three-level topology, this static var generator connects a voltage source converter (VSC) to the grid in parallel via a filter, delivering a transient response under 50μs and a full response under 10ms to prevent over-compensation and under-compensation.

Working Principle

The device connects a voltage source converter (VSC) to the grid in parallel through a filter. By regulating the amplitude and phase of the output voltage on the AC side of the converter, it provides dynamic and precise compensation for reactive power in the grid system, keeping the response at millisecond level for impact loads.

Key Features

Digital Control Core — DSP+CPLD architecture, three-level topology, advanced reactive power detection algorithm and PWM control strategy.
Modular Design — parallel connection of multiple modules, small footprint and easy maintenance.
Structural Design — independent air duct and separate board compartment for stable operation.
Multiple Sampling Modes — two external current sampling channels supporting low-voltage/high-voltage side sampling and reactive power component compensation.
Selectable Modes — reactive compensation only, or reactive compensation combined with three-phase unbalance compensation.
Performance — reactive compensation rate ≥95%, unbalance degree after compensation ≤5%.

Protection

Integrated protection covers overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, overtemperature, frequency anomaly and short circuit protection. Overload capability is rated at 1.2 times for 60 seconds.

Installation

Vertical installation with upper-line and lower-line cable entry. Protection rating is IP20 (IP54 available on request), cooling by forced air, and noise level ≤75dB.

Applications

Suitable for industrial and commercial power grids requiring dynamic reactive power compensation and three-phase load balancing, particularly systems with impact loads that demand fast, precise correction.

Technical Parameters

Model	220V	380V	500V	690V	800V
Altitude	<2000m; above 2000m, derate according to GB/T 3859.2
Ambient Temperature	-10 to +50°C (above 40°C, capacity derating ≤30%)
Relative Humidity	≤90%, no condensation on the surface at a monthly minimum temperature of 25°C
Pollution Degree	≤ Class III
Operating Voltage	AC220V (-20%~+20%)	AC380V (-20%~+20%)	AC500V (-20%~+20%)	AC690V (-20%~+15%)	AC800V (-20%~+850V)
Operating Frequency	50Hz/60Hz (45Hz~63Hz)
Rated Compensation Capacity	50kvar~300kvar	100kvar~600kvar	90kvar~540kvar	100kvar~720kvar	150kvar~900kvar
Grid Configuration	Three-phase three-wire, Three-phase four-wire				Three-phase three-wire
Number of Parallel Units	No restrictions
Overall Efficiency	≥97%
Switching Frequency	16kHz				12.8kHz
Function Selection	Reactive compensation / Reactive compensation + Three-phase unbalance compensation				Reactive compensation
Reactive Compensation Rate	≥95%
Unbalance Compensation Capability	Unbalance degree after compensation ≤5%
Cooling Mode	Forced air cooling
Full Response Time	Reactive power: <10ms; Harmonics: <40ms
Noise Level	≤75dB
Communication Method	2 RS485 communication interfaces (Wi-Fi supported)
Protection Functions	Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, overtemperature, frequency anomaly, short circuit protection, etc.
Overload Capability	Rated overload 1.2 times for 60 seconds
Installation Method	Vertical installation
Cable Entry	Entering the upper line and the lower line
Protection Rating	IP20 (IP54 available on request / customizable)
Size (mm)	1250 × 1000 × 2200 (maximum capacity size, adjustable according to different capacities)
Weight	Related to capacity, maximum 450KG				Related to capacity, maximum 620KG

1. What is the GY-SVG-Cabinet?

The GY-SVG-Cabinet is a cabinet-type Static Var Generator (SVG) composed of an AC distribution section, SVG power modules, a monitoring system and auxiliary components. It connects a voltage source converter to the grid in parallel to provide dynamic reactive power compensation.

2. What are its core functions?

Reactive Compensation — compensation rate ≥95%.
Unbalance Correction — three-phase unbalance degree after compensation ≤5%.
Fast Response — transient response <50μs, full response <10ms.

3. Which key parameters affect selection?

Operating Voltage — AC220V, 380V, 500V, 690V or 800V.
Rated Capacity — from 50kvar up to 900kvar.
Grid Configuration — three-phase three-wire or three-phase four-wire.
Function Mode — reactive only, or reactive + unbalance compensation.

4. Which specifications / models are available?

Five voltage models are offered: 220V, 380V, 500V, 690V and 800V. The modular design supports parallel connection with no restrictions on the number of units, and cabinet size is adjustable according to capacity.

5. What standards and target markets does it suit?

The altitude derating follows GB/T 3859.2, pollution degree is ≤ Class III, and protection rating is IP20 (IP54 customizable). It targets industrial and commercial power systems requiring reactive power compensation and three-phase load balancing.

6. What should be noted for installation and maintenance?

Installation — vertical mounting with upper-line and lower-line cable entry.
Cooling — forced air cooling; keep air ducts clear for stable operation.
Environment — operating temperature -10 to +50°C, humidity ≤90%.
Maintenance — modular structure allows convenient module access and servicing.

GY-SVG-Cabinet Static Var Generator