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GRIDVAR-G
Standard Series

3-level IGBT topology. 400V and 690V. 30 – 100 kvar per module at 400V, up to 200 kvar at 690V, 20 modules in parallel.

400V / 690V Up to 100 kvar / module (400V) ≤ 50 µs instant / ≤ 5 ms total 2nd – 25th harmonic
Stepless reactive compensation
400V and 690V operation
Up to 20 modules parallel
3-Phase load balancing
Active Power Quality

Standard-series SVG
for 400V and 690V

GRIDVAR-G is the entry tier of the GRIDVAR family. It uses a 3-level IGBT power stage and provides stepless reactive power compensation on 400V and 690V industrial systems.

Modules are rated up to 100 kvar at 400V and 200 kvar at 690V. Up to 20 modules run in parallel, so one system can cover a single motor feeder or a whole plant. Operating temperature is −20°C to +55°C.

GRIDVAR-G's primary function is reactive power compensation. It suppresses harmonics (2nd–25th) by the same method an AHF uses, but only to the extent of its residual capacity. This is not its primary function, and it may not reach the performance of a dedicated AHF. Where dedicated harmonic filtering is required, GRIDSINE-G is ordered separately.

400V and 690V Harmonic suppression from residual capacity 20 modules parallel ≤ 5 ms response > 97.5% efficiency −20°C ~ +55°C
GRIDVAR-G module, side view
GRIDVAR-G module, detail view
≤5 ms
Total response time
(≤ 50 µs instant)
100 kvar
Max capacity per module
(400V) / 200 kvar (690V)
>97.5%
System efficiency
(3-level IGBT topology)
−20°C
Minimum operating
temperature
Technical Specifications

GRIDVAR-G Specification

Values from the GRIDVAR-G datasheet. 400V and 690V configurations.

ParameterSpecification
Product seriesGRIDVAR-G — Standard Active SVG
Power electronics technologyAdvanced IGBT, 3-Level Topology
FunctionSVG (Reactive Power Compensation) — primary. Harmonic filtering and unbalance correction to the extent of residual capacity. LT & HT current sensing supported.
Operating voltage400V (300~456V), 690V available
Frequency50 / 60 Hz
Connection type3P3W / 3P4W / Single Phase
Module capacity options (400V)30 · 50 · 75 · 100 kvar
Module capacity options (220V)10 · 20 · 30 · 40 · 50 kvar
Module capacity options (690V)150 · 175 · 200 kvar
Response time≤ 50 µs (instant) / ≤ 5 ms (total)
Switching frequency25.6 kHz
Active power loss≤ 2.5%
System efficiency> 97.5%
Power factor targetAdjustable −1 to 1 (cosφ = 1.00 achievable)
Filtering efficiency≥ 98% (typical harmonics)
Harmonic reduction ratio≥ 98% (fundamental harmonics)
Harmonic filtering range2nd – 25th harmonic (active mode)
THDi≤ 5% (at rated load)
Neutral current (4-wire)3× rated current
3-Phase load balancingYes — active phase balancing (≤ 5% residual unbalance)
Max. parallel modulesUp to 20 modules — Master/Slave or Master/Master
Overload capacity110% continuous / 120% for 1 minute
Operating temperature−20°C ~ +55°C
HumidityMax 95% (non-condensing)
Altitude≤ 2000 m full load; 1% derating per 100 m above
Noise level< 60 dB (< 45 dB at low speed)
CoolingForced fan cooling (smart speed control)
Communication interfaceRS485, CAN Bus, Modbus RTU, Mobile APP, 4.3" / 7" / 10" TFT LCD (optional)
HMI (optional)4.3″ / 7″ / 10″ TFT LCD
Compensation typeCapacitive and inductive
MountingRack / Wall-mount / Freestanding
IP protectionIP20 ~ IP54
StandardsIEC 61000-3-4 / IEC 61439-1
CertificationsCE · Type Test
Key Features

690V modules, stepless output, 20 in parallel

400V and 690V Operation

The only GRIDVAR model with 690V modules (150, 175 and 200 kvar). For steel and cement plants, large pumping stations and drives on a 690V busbar.

3-Level IGBT Topology

The 3-level topology gives >97.5% system efficiency and lower switching harmonics than a 2-level design, so less distortion is injected into the grid.

Wide Temperature Range

Operating range −20°C to +55°C. Suits air-conditioned production halls as well as outdoor substation enclosures.

Stepless output, no dead band

A thyristor-switched bank can only switch fixed steps. GRIDVAR-G outputs the exact reactive current demanded at that instant, 37.4 kvar if that is what the load needs, with no over- or under-compensation.

Up to 20 modules in parallel

Up to 20 modules run in parallel, in Master/Slave or Master/Master mode. A system can start at one 30 kvar module and grow with the load.

Module Variants

Four 400V module sizes

30, 50, 75 and 100 kvar at 400V. 690V modules: 150, 175 and 200 kvar. Up to 20 modules in parallel.

30
kvar
400V3P3W/4WIP20~IP54
50
kvar
400V3P3W/4WIP20~IP54
75
kvar
400V3P3W/4WIP20~IP54
100
kvar
400V / 690V3P3W/4WIP20~IP54

All modules: 3-level IGBT · 25.6 kHz · RS485, CAN Bus, Modbus RTU, Mobile APP, 4.3" / 7" / 10" TFT LCD (optional)

Hybrid Compatibility

SVGC: GRIDVAR-G added to a GRIDFIX passive bank

One GRIDVAR-G module added to an existing GRIDFIX bank covers the steps the passive stages cannot reach.

Existing Infrastructure

GRIDFIX Passive Stage

The existing thyristor-switched capacitor/reactor stages keep carrying the stable base load. Nothing is replaced.

Add GRIDVAR-G

SVGC Hybrid Result

GRIDVAR-G fills the gaps between LC steps steplessly, within ≤ 5 ms. The result is unity power factor, harmonic suppression within residual capacity and 3-phase balance from one added module.

New Capability

GRIDVAR-G Module

Compensates dynamic load changes and residual reactive demand steplessly. Suppresses 2nd–25th harmonics and corrects 3-phase imbalance, which passive stages cannot do.

Applications

Applications: 690V feeders and unheated rooms

Four cases where the 690V modules or the −20°C rating decide the choice.

Pumping Stations

Large pump motors at 690V. GRIDVAR-G provides reactive support without the resonance risk of capacitor banks on the 690V bus.

Food & Beverage

Conveyor systems, refrigeration compressors and mixing drives. 690V modules for the large motor feeders.

General Manufacturing

Machining centres, hydraulic presses and assembly lines. The −20°C to +55°C range covers both air-conditioned and unheated halls.

Renewables

Wind and solar plant auxiliary systems. The −20°C to +55°C range suits outdoor substation rooms in cold or hot climates.

Need tighter space, higher cabinet capacity or broader harmonic filtering (2nd–51st)? Compare GRIDVAR-G with the Compact and SiC tiers.

Compare all GRIDVAR models

Send your load profile and bus voltage. We size the modules and quote the panel.

Module count and panel configuration follow from the load profile. 400V and 690V are both quoted.

Documents

Technical documents for this product. Ask for a document still in preparation and we will send it as soon as it is ready.

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