Name: GY-SVG 220V–800V Three-phase SVG - GEYA Electrical Equipment Supply
SKU: GY-SVG

Description

GY-SVG Static Var Generator (220V–800V) Overview

The GY-SVG Static Var Generator (SVG) is a high-performance modular reactive power compensator covering AC 220V, 380V, 500V, 690V and 800V three-phase grids, with module ratings from 5 kvar up to 150 kvar and unlimited parallel expansion. Continuously injecting compensating current with a full response time of less than 10 ms, the GY-SVG corrects power factor to ≥ 0.99, balances three-phase loads and stabilises bus voltage — an ideal power-quality solution for industrial automation, wind & solar plants, EV charging, oil & gas, mining, commercial buildings, hospitals and data centers.

How the GY-SVG Works

The GY-SVG connects a voltage source converter (VSC) to the power grid through a filter in parallel with the load. By precisely regulating the amplitude and phase of the converter’s AC-side output voltage, the SVG dynamically generates a leading or lagging reactive current that exactly cancels the reactive demand of the load. Transient response is < 50 µs and full response < 10 ms, which prevents over- and under-compensation typical of capacitor-bank solutions.

Voltage Platform Lineup

Voltage Platform	Available Capacity per Module	Grid Configuration
AC 220V	3 / 5 / 7 / 10 / 17 / 25 / 37 / 50 / 75 kvar	3P3W / 3P4W
AC 380V	5 / 10 / 15 / 20 / 35 / 50 / 75 / 100 / 150 kvar	3P3W / 3P4W
AC 500V	90 kvar	3P3W / 3P4W
AC 690V	120 kvar	3P3W / 3P4W
AC 800V	150 kvar	3P3W only

Key Performance Highlights

Full-Digital Control Core
DSP + CPLD architecture, three-level topology, advanced reactive-power detection algorithm and PWM control strategy.

Wide Voltage Coverage
A unified product platform from 220V LV up to 800V — covers virtually all industrial low-voltage networks.

Modular & Scalable
Unlimited parallel connection of modules — flexibly scale capacity up to MVA-class projects, easy maintenance.

Independent Air Duct Design
Separated air ducts and independent PCB compartments guarantee long-term, stable operation in harsh industrial environments.

Dual External CT Channels
Two current sampling inputs support multiple modes: LV-side sampling + LV-side compensation, HV-side sampling + LV-side compensation, or reactive-component compensation.

Selectable Compensation Modes
Reactive only — or reactive + three-phase unbalance compensation. (800V model: reactive compensation only.)

High Compensation Accuracy
Reactive power compensation rate ≥ 99%; unbalance degree after compensation ≤ 5%.

Millisecond-Level Dynamic Response
Transient response < 50 µs, full response < 10 ms — precise compensation of impact loads such as welders, cranes and arc furnaces.

Wi-Fi & RS485 Communication
Two RS485 ports plus Wi-Fi support remote monitoring, parameter setting and diagnostics.

Available Form Factors

Wall-Mounted Module
Top cable entry with built-in HMI — saves floor space, ideal for commercial buildings and distributed installations.

Rack-Mounted Module
Rear cable entry, optimised for cabinet integration and parallel stacking in industrial switchgear rooms.

Typical Applications

Industrial automation, welders, cranes & arc furnaces (220V / 380V)
Wind & solar PV plants — 690V / 800V grid-tie reactive support
EV charging stations & charging hubs (380V)
Oil & gas, petrochemical and mining (500V / 690V)
Commercial buildings, shopping malls & data centers (380V)
Hospitals & medical imaging facilities (220V / 380V)
Rail-transit substations & ports / airports
Cement, metallurgy & heavy industry (690V / 800V)

Why Choose GY-SVG

Compared with traditional capacitor banks, the GY-SVG provides step-less, bidirectional reactive compensation with no risk of resonance or over-compensation. Benefits include:

Power factor improved to ≥ 0.99 — lower utility penalties
Reduced line losses and transformer / cable heating
Stabilised bus voltage, fewer breaker trips
Three-phase load balancing extends equipment lifetime
Plug-in modular maintenance — minimal downtime
One platform from 220V to 800V — single supplier for the whole plant

Typical Applications by Voltage Platform

220V – Light Commercial & Small Industry
Workshops, hospitals, hotels, commercial buildings, telecom rooms, distributed PV inverters.

380V – Standard Industrial & Commercial
Manufacturing lines, VFDs, EV charging stations, data centers, shopping malls, hospitals.

500V – Mining & Oil & Gas
Underground mining grids, drilling rigs, offshore platforms.

690V – Heavy Industry & Renewables
Wind turbines, large solar plants, port cranes, cement & metallurgy, petrochemical.

800V – Wind & Heavy Process
Wind farm collector grids, large process drives, special MV-LV interface applications.

Cross-Platform
Welders, cranes, arc furnaces, rail transit, ports & airports, telecom base stations.

Model Lineup & Capacity Matrix

Voltage Platform	Operating Voltage Range	Rated Capacity per Module	Grid Configuration	Function Selection
220V	AC 220V (-20% ~ +20%)	3 / 5 / 7 / 10 / 17 / 25 / 37 / 50 / 75 kvar	3P3W / 3P4W	Reactive / Reactive + Unbalance
380V/400V	AC 380V/400V (-20% ~ +20%)	5 / 10 / 15 / 20 / 35 / 50 / 75 / 100 / 150 kvar	3P3W / 3P4W	Reactive / Reactive + Unbalance
500V	AC 500V (-20% ~ +20%)	90 kvar	3P3W / 3P4W	Reactive / Reactive + Unbalance
690V	AC 690V (-20% ~ +15%)	120 kvar	3P3W / 3P4W	Reactive / Reactive + Unbalance
800V	AC 800V (-20% ~ +15%)	150 kvar	3P3W only	Reactive only

Common Technical Parameters

Parameter	Specification
Model Series	GY-SVG-220V / 380V / 500V / 690V / 800V
Operating Frequency	50 Hz / 60 Hz (45 Hz ~ 63 Hz auto-sensing)
Parallel Units	Unlimited
Overall Efficiency	≥ 97%
Switching Frequency	16 kHz (220V / 380V) \| 12.8 kHz (500V / 690V / 800V)
Reactive Compensation Rate	≥ 99%
Unbalance Compensation	Unbalance degree after compensation ≤ 5%
Transient Response Time	< 50 µs
Full Response Time	< 10 ms
Control Core	DSP (TI 28335) + CPLD full-digital control, three-level topology
Overload Capability	1.2× rated for 60 seconds
Noise Level	≤ 60 dB (220V) \| ≤ 65 dB (380V – 800V)
Communication	2× RS485 (Wi-Fi supported)
Protection Functions	Overload, software / hardware overcurrent, grid over- / under-voltage, grid voltage imbalance, power-supply failure, over-temperature, frequency anomaly, short-circuit protection
Installation	Rack-mounted / Wall-mounted
Cable Entry	Rear entry (rack) / Top entry (wall-mount)
Protection Rating	IP20 (IP54 customizable)
Cooling Method	Forced air cooling, independent air duct design
Altitude	< 2000 m (derate above 2000 m per GB/T 3859.2)
Ambient Temperature	-10 to +50 °C (capacity derating ≤ 30% above 40 °C)
Relative Humidity	≤ 90%, no condensation at monthly minimum 25 °C
Pollution Degree	Class III

220V Three-Phase Module Lineup

No.	Model	Voltage (V)	Grid Wiring	Frequency (Hz)	Control Chip	Capacity (kvar)
1	GY-SVG-5k	220	3P3W / 3P4W	50/60	28335	5
2	GY-SVG-7k	220	3P3W / 3P4W	50/60	28335	7
3	GY-SVG-10k	220	3P3W / 3P4W	50/60	28335	10
4	GY-SVG-17k	220	3P3W / 3P4W	50/60	28335	17
5	GY-SVG-25k	220	3P3W / 3P4W	50/60	28335	25
6	GY-SVG-37k	220	3P3W / 3P4W	50/60	28335	37
7	GY-SVG-50k	220	3P3W / 3P4W	50/60	28335	50
8	GY-SVG-75k	220	3P3W / 3P4W	50/60	28335	75

* The single-phase 220V GY-SVG-5k/2L (L/N) module is sold separately on its own product page.

** Specifications may be updated without prior notice. Please contact GEYA for project-specific configurations.

Frequently Asked Questions

1. What is the GY-SVG Static Var Generator?
The GY-SVG is a modular Static Var Generator (SVG), also called a static synchronous compensator (STATCOM). It connects a voltage source converter (VSC) to the grid through a filter in parallel with the load and dynamically generates leading or lagging reactive current to compensate the reactive demand, balance three-phase loads and stabilise bus voltage. It is built around a DSP + CPLD digital control core with three-level IGBT topology, and is available across five voltage platforms — 220V, 380V, 500V, 690V and 800V — with module ratings from 5 kvar to 150 kvar.

2. What functions does the GY-SVG provide?
The unit is multifunctional and supports selectable operating modes:

Reactive power compensation — ≥ 99%, both inductive and capacitive, step-less and bidirectional.
Three-phase unbalance compensation — residual unbalance ≤ 5% (220V / 380V / 500V / 690V models).
Voltage stabilisation — fast dynamic regulation of bus voltage.
Dynamic / impact load compensation — full response < 10 ms suitable for welders, cranes, arc furnaces.
Comprehensive protection — overload, overcurrent, over- / under-voltage, over-temperature, short-circuit, frequency anomaly and more.

3. What are the key parameters that affect model selection?

System voltage: 220V / 380V / 500V / 690V / 800V — match to the customer’s grid.
Grid configuration: 3P3W or 3P4W (800V supports 3P3W only).
Required reactive capacity: 5 / 7 / 10 / 17 / 25 / 37 / 50 / 75 / 90 / 100 / 120 / 150 kvar — combine modules in parallel for higher capacity.
Target power factor & load profile: determines total kvar capacity and number of modules.
Need for unbalance compensation: selectable function (not available on 800V model).
Installation environment: indoor temperature, altitude (derate > 2000 m), IP rating (IP20 standard, IP54 optional).
Form factor: rack-mount for switchgear cabinets, wall-mount for distributed installations.

4. What options are currently available?

Voltage versions: 220V / 380V / 500V / 690V / 800V
Capacity per module: 5 – 150 kvar (unlimited parallel)
Wiring: 3P3W / 3P4W (800V: 3P3W)
Form factor: Rack-mounted module / Wall-mounted module
Function modes: Reactive only — or Reactive + 3-phase unbalance (220V / 380V / 500V / 690V)
Protection rating: IP20 standard, IP54 customizable
Communication: 2× RS485 standard, Wi-Fi supported

5. Which standards does it comply with, and which markets is it designed for?
The GY-SVG is designed in accordance with international power-quality and EMC standards, with altitude derating following GB/T 3859.2. The product supports compliance with IEC 61000 power-quality requirements and typical utility-grid power-factor / voltage-quality codes. With the 220V – 800V product family, it is targeted at industrial, commercial and infrastructure markets globally — including manufacturing plants, renewable energy plants, oil & gas, mining, EV charging, healthcare, data centers, telecom and rail transit across Asia-Pacific, EMEA and the Americas.

6. Installation notes & precautions

Connection: The SVG connects in parallel with the load — load current does not flow through the unit.
Voltage matching: Confirm the grid voltage class (220V / 380V / 500V / 690V / 800V) matches the selected SVG model — never connect a lower-rated SVG to a higher-voltage grid.
Current Transformers (CTs): Use a set of 3 external CTs on the grid side or load side; verify polarity and ratio before commissioning.
Ventilation: Maintain clearance around the air inlet / outlet; cooling is forced air with independent ducts. Keep ambient temperature within -10 °C to +50 °C (derate above 40 °C).
Altitude: Derate capacity per GB/T 3859.2 above 2000 m.
Cable entry: Rear entry for rack-mount; top entry for wall-mount. Follow recommended cable cross-sections and torque values.
Grounding: Reliable PE grounding is mandatory for EMC performance and personal safety, especially for 500V / 690V / 800V modules.
Parallel operation: When stacking modules, ensure consistent CT signal distribution and matching firmware versions.
Commissioning: Configure compensation mode (reactive only / reactive + unbalance) and target power-factor via the HMI or Wi-Fi tool before energizing the load.
Maintenance: Periodically clean the air filter; modules are plug-in replaceable to minimise downtime.

GY-SVG 220V–800V Three-phase SVG