GY-SVG STATIC VAR GENERATOR

Name: GY-SVG Static Var Generator
Brand: Ningbo Gaoyun Electric Co., Ltd. | Power Quality Equipment Manufacturer
SKU: 26472
Availability: InStock

Rack-mount static var generator — 30–200 kVAr, sub-5 ms dynamic response for stable power quality

GY-SVG Static Var Generator product image

Dynamic Reactive Compensation | Response Time Under 5 ms

Voltage Stabilization & Flicker Mitigation

30–200 kVAr Modular Rack Design | Up to 10 Units Paralleled

Power Factor Correction | Line Losses Reduced

Get Free Technical Quotation Download Full Datasheet PDF

Quick Specs

Parameter	Specification
Voltage Class	0.4 kV
Product Ratings	15 kVAr, 20 kVAr, 30 kVAr, 50 kVAr, 75 kVAr, 100 kVAr
Grid Voltage	400 V (−20% ~ +20%)
Grid Frequency	50/60 Hz (−5 Hz ~ +5 Hz)
Max. Parallel Units	≤ 10 units
Active Power Loss	< 2% (at rated full load)
System Wiring	3-Phase 4-Wire (3P4W)
Current Transformer Ratio	100/5 – 10000/5
Target Power Factor	Compensation range: −1.0 to +1.0 (capacitive to inductive loads)
CT Location	Load side or source side
Overall Efficiency	0.97
Response Time	< 5 ms
Noise Level	< 65 dB
Communication Interfaces	RS485, Ethernet Port
Communication Protocols	Modbus Protocol, TCP/IP
Altitude	≤ 2000 m. Derate by 1% per additional 100 m above 2000 m
Operating Temperature	−25°C ~ +55°C
Relative Humidity	5% ~ 95%, non-condensing
Ingress Protection (IP) Rating	IP20 (custom IP ratings available)

Typical Applications

Renewable Energy (Solar/Wind Farms)

Compensate reactive power fluctuations from intermittent generation; stabilize grid voltage at PoI (Point of Interconnection).

Steel & Metallurgy (Arc Furnaces, Rolling Mills)

Suppress rapid voltage flicker and imbalance caused by heavy impact loads; improve power factor dynamically.

Mining (Shovels, Conveyors, Crushers)

Support long-distance motor starts; correct lagging power factor under extreme load swings.

Railways (Traction Power Systems)

Compensate single-phase unbalanced reactive demand; reduce negative-sequence currents on the grid.

Data Centers & Telecom

Maintain tight voltage regulation for sensitive servers; ensure UPS compatibility with fast-response reactive support.

Ports & Shipbuilding (Cranes, Thrusters)

Absorb regenerative energy during deceleration; smooth shore-to-ship power transitions.

Oil & Gas (Pipelines, FPSO Vessels)

Enhance system stability in weak grids; reduce losses from long cable runs.

Municipal Infrastructure (Water Supply, Subways)

Correct power factor for large pump and tunnel ventilation systems; reduce monthly utility penalties.

Why Choose This Product

The GY-SVG Series Static Var Generator (SVG) is a high-performance, dynamic reactive power compensation device. It operates by continuously detecting the system voltage and load current, then using a high-speed DSP (Digital Signal Processor) to calculate the real-time reactive power demand. The SVG then drives its IGBT (Insulated Gate Bipolar Transistor) modules to output the required capacitive or inductive reactive current.

This achieves:

Fast, dynamic reactive power compensation
System voltage stabilization
Improved power factor
Reduced line losses and optimized power quality

The Basic Series covers capacities from 30 to 200 kVAr, featuring a compact, rack-mount design with standard cabinet widths. The small footprint ensures easy integration into commercial buildings and industrial power distribution systems.

WORKING PRINCIPLE

SVG static var generator electric schematic: three-phase grid feeding an inductive or capacitive load, a DSP control system performing reactive power calculation, voltage detection and DC voltage control, and a three-phase PWM inverter built with IGBT modules outputting the compensating reactive current iq

The GY-SVG is connected in parallel with the distribution system. It continuously detects the system voltage and the load current, and a high-speed DSP calculates the real-time reactive power demand of the load.

Based on this calculation, the DSP drives the three-phase PWM inverter built with IGBT modules to output the exact capacitive or inductive reactive current required, completing the dynamic compensation within 5 ms.

Because the SVG exchanges only reactive power with the grid, it achieves fast, stepless compensation without large capacitor or reactor banks — stabilizing voltage, improving power factor and reducing line losses even under rapidly changing loads.

INTERNAL STRUCTURE

GAOYUN GY-SVG series exploded view showing front panel and HMI interface, air vent grilles, IGBT heat sink, power reactor inductors, DC-link capacitors, main control board, driver and sampling board, rear terminal block, rack chassis housing and fixing hardware — GAOYUN Static Var Generator | GY-SVG Series Exploded View

1
Front Panel & HMI Interface
2
Front Air Vent Grille
3
IGBT Heat Sink
4
Power Reactor Inductors
5
DC-Link Capacitors
6
Main Control Board
7
Driver & Sampling Board
8
Rear Terminal Block & Communication Interface
9
Rear Ventilation Grill
10
Rack Chassis Housing
11
Fixing Screws & Hardware

MANUFACTURING & QUALITY CONTROL

Automated SMT production line for GY-SVG power units

Multi-stage functional testing of GY-SVG modules

Strict packing and delivery inspection of finished GY-SVG units

Automated Precision Assembly

Advanced SMT & automated assembly lines, standardized welding and module assembly for GY-SVG power units, ensuring consistent product performance.

Full-process Multi-stage Testing

Power-on test, harmonic response test, protection function test, temperature rise test and aging test. 100% full inspection before shipment.

Standardized Traceable Management

Unique serial number for each unit, full production data traceability. Manufactured in compliance with IEC international standards.

Strict Packing & Delivery Inspection

Final appearance check, vibration protection packaging, secure packaging for sea & land transportation to avoid damage during transit.

Technical Specifications

Product Description	Model No.	Dimensions (L×H×D, mm) (without mounting ears)	Mounting Size (A×B, mm)
3-Phase 4-Wire 15 kVAr Rack-Mount SVG	GY-SVG-0.4/15-4L/M	500×100×645	472×50
3-Phase 4-Wire 20 kVAr Rack-Mount SVG	GY-SVG-0.4/20-4L/M	500×100×645	472×50
3-Phase 4-Wire 30 kVAr Rack-Mount SVG	GY-SVG-0.4/30-4L/M	500×100×645	472×50
3-Phase 4-Wire 50 kVAr Rack-Mount SVG	GY-SVG-0.4/50-4L/M	500×100×645	472×50
3-Phase 4-Wire 75 kVAr Rack-Mount SVG	GY-SVG-0.4/75-4L/M	500×180×666	472×95
3-Phase 4-Wire 100 kVAr Rack-Mount SVG	GY-SVG-0.4/100-4L/M	500×200×666	472×95

Notes: All dimensions are nominal values. Tolerance: ±5 mm. Custom specifications and configurations are available upon request.

DIMENSIONS & CAD DOWNLOADS

Dimension Note: Terminal spacing varies with shell diameter for three-phase models. All drawings below are nominal dimensions; custom sizes are available on request.

GY-SVG 15-50 kVAr rack-mount models front and side dimension drawing, height 100 mm — GY-SVG-0.4/15 ~ 50 (H = 100 mm)

GY-SVG 75 and 100 kVAr rack-mount models front and side dimension drawing, height 180 mm and 200 mm — GY-SVG-0.4/75 / 100 (H = 180 / 200 mm)

Download Center

Download 2D CAD Drawing Download Full Dimension Manual Request Complete Product Datasheet

CERTIFICATIONS

The GY-SVG series is designed and manufactured under a management system certified to international standards. Certificates, scope statements and the latest audit reports are supplied with every quotation package.

ISO 9001

Quality Management System

ISO 14001

Environmental Management System

ISO 45001

Occupational Health & Safety Management System

CCC certificate of Ningbo Gaoyun Electric

CCC

Product Certification

Product-specific test reports — including type test, temperature rise and EMC reports for the GY-SVG series — are available on request. Tell us the destination market and we will send the documentation set your authority requires.

SUCCESSFUL PROJECT CASES

Metallurgical Arc Furnace

Pain Point: Severe reactive power impact, voltage flicker, low power factor, risk of grid penalty.

Solution: GY-SVG installed on low-voltage busbar for ultra-fast dynamic reactive compensation.

Effect: Flicker mitigated, power factor stabilized above 0.95, avoid utility fines.

PF > 0.95Flicker Suppression

Centralized PV Power Station

Pain Point: Irregular reactive fluctuation, voltage over limit during light load, poor grid adaptability.

Solution: Centralized GY-SVG deployment for voltage regulation and reactive power support.

Effect: Voltage within standard range, stable grid-connection, meet grid code requirements.

Voltage RegulationGrid Code Compliance

Port Crane & Hoist Load

Pain Point: Periodic impact load, drastic voltage swing, frequent protection action.

Solution: GY-SVG responds instantly to compensate reactive power of hoist drives.

Effect: Smooth voltage output, reduce equipment tripping, improve operation reliability.

Dynamic CompensationLess Nuisance Tripping

Data Center LV Distribution

Pain Point: Fluctuating reactive load, power factor losses, extra power charge.

Solution: GY-SVG integrated in main LV cabinet for continuous reactive power optimization.

Effect: Energy loss reduced, stable power supply, lower electricity cost.

Energy SavingStable Power Supply

FREQUENTLY ASKED QUESTIONS

1. Can I customize the compensation current, voltage and cabinet size for GY-SVG?

Yes. We support OEM & ODM customization for rated voltage, compensation capacity, cabinet layout and communication protocol to match your project.

2. What functions can GY-SVG realize?

It provides fast dynamic reactive power compensation, power factor correction, voltage stabilization and flicker suppression. It can also work with capacitors for hybrid compensation.

3. What is the standard lead time for GY-SVG?

7–10 working days for standard models. 15–20 working days for customized cabinets and special specifications.

4. What is the maximum operating altitude and ambient temperature?

Standard version: altitude ≤ 2000 m, −10℃ ~ +45℃. High altitude / wide temperature customized version is available.

5. Do you provide overseas commissioning and technical guidance?

We offer remote online technical guidance worldwide. On-site commissioning service is available for large turnkey projects.