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GRIDVAR-X
Premium SiC Series

Silicon Carbide switching device. > 100 kHz switching frequency. 4 µs instantaneous response. up to 98% efficiency. The highest-performance active SVG available — engineered for steel mills, arc furnaces and the most critical harmonic environments.

4 µs response > 100 kHz switching up to 98% efficiency 2nd – 51st harmonic Bluetooth + Mobile APP 10× redundant modules
Silicon Carbide — not IGBT
4 µs instantaneous response
2nd – 51st harmonic (independent)
10 modules — redundant parallel
Bluetooth & Mobile APP
Division 02 — Active Power Quality · Premium SiC

The SiC revolution
in active compensation

GRIDVAR-X represents the flagship of Forte's active power quality portfolio — built on Silicon Carbide (SiC) switching technology rather than conventional IGBT. SiC operates at > 100 kHz switching frequency, delivering compensation current that is far closer to an ideal sine wave than any IGBT-based system.

The result: 4 µs instantaneous response time — eradicating transient disturbances from arc furnaces, large presses and crane drives before they propagate into the grid. System efficiency reaches up to 98%, reducing operating costs and heat dissipation compared to lower-efficiency IGBT systems.

GRIDVAR-X also features a fully redundant parallel architecture with up to 10 modules, integrated Bluetooth and mobile app control, and per-order independent harmonic filtering across the full 2nd–51st harmonic spectrum.

SiC — not IGBT 4 µs instantaneous > 100 kHz switching up to 98% efficiency 2nd – 51st harmonic Bluetooth + APP
GRIDVAR-X Module
4 µs
Instantaneous response
to grid transients
> 100 kHz
Switching frequency
up to 98%
System efficiency
51st
Highest filtered harmonic
— independent per order
Technical Specifications

GRIDVAR-X — Full Specification

All parameters from the official SiC product datasheet. Contact our engineering team for project-specific configurations.

ParameterSpecification
Product seriesGRIDVAR-X — Premium SiC Active SVG
Control algorithmCurrent dual closed-loop active damping
Switching deviceSilicon Carbide (SiC)
FunctionSVG (Reactive Power Compensation) — primary. Harmonic filtering to the extent of residual capacity; dedicated filtering is a GRIDSINE-X unit.
Operating voltage220V – 380V (+10% / −15%)
Frequency50 / 60 Hz (±5%)
Connection type3-Phase 3-Wire (3P3W) and 3-Phase 4-Wire (3P4W)
Module capacity options30 kvar · 50 kvar · 100 kvar · 150 kvar
Instantaneous response4 µs
Full response time¼ cycle (fundamental) / 1 cycle (harmonic)
Switching frequency> 100 kHz
System efficiencyup to 98%
Power factor targetConfigurable −1 to 1 (cosφ = 1.00 achievable)
Harmonic filtering range2nd – 51st harmonic (independent per-order selection)
Resonance suppressionActive suppression
3-Phase load balancingYes — active phase and neutral current balancing
Max. parallel modulesUp to 10 modules (smart rotation)
Parallel current sharingEqual, fixed, or intelligent (assignable ratio per module)
RedundancyFaulty module auto-isolates; remaining modules increase output to compensate
Hot-swapLive module exchange supported (verify for SiC variant)
Operating temperature−10°C ~ +40°C (derating 2.5%/°C from 40°C to 50°C)
Humidity< 95% (non-condensing)
Altitude< 1000 m full load; 1% derating per 100 m; max. 3000 m
Storage temperature−25°C ~ +70°C
CoolingForced-air cooling — adaptive wind speed regulation
Communication interfaceBluetooth / Mobile APP, RS485 / CAN / RJ45
Capacitor switchingConfigurable group or individual compensation switching control
CT specification5A — load side or grid side
Seismic ratingIBC certified
IP protectionIP20 (other levels customisable)
PCBA protectionEnvironmentally friendly conformal coating
StandardsIEC 61000-3-4 / IEC 61439-1
Why SiC Changes Everything

Six Reasons GRIDVAR-X Outperforms IGBT

Silicon Carbide is not an incremental improvement over IGBT — it is a fundamentally different semiconductor material with superior physical properties.

4 µs — Speed of Light Response

GRIDVAR-X reacts to arc furnace transients, crane impacts and large press cycles in just 4 microseconds — ~1,250× faster than a ≤5 ms IGBT system. Grid disturbances are cancelled before they cause voltage sags or equipment trips.

> 100 kHz Switching Frequency

SiC switches at > 100 kHz — ~4 times higher than IGBT at > 100 kHz. Higher switching frequency produces compensation current far closer to a perfect sine wave, reacting to the smallest grid fluctuation with exceptional accuracy.

up to 98% System Efficiency

SiC's lower conduction and switching losses deliver up to 98% efficiency — compared to >97.5% for IGBT. In high-capacity installations, this difference translates directly into reduced operating costs and lower cooling requirements.

2nd – 51st Harmonic — Independent Selection

GRIDVAR-X filters the complete harmonic spectrum from the 2nd to the 51st order. Unlike systems that filter all harmonics together, each order can be individually enabled or disabled — allowing exact tuning to your grid code requirements.

Full Redundancy Architecture

If any module develops a fault, it automatically goes offline while the remaining modules increase output to cover the lost current — maintaining full compensation without operator intervention. Hot-swap allows module replacement under live conditions.

Bluetooth + Mobile APP Control

Integrated Bluetooth interface allows all operating parameters — harmonic priorities, power factor targets, load sharing ratios — to be configured and monitored via the GRIDVAR-X mobile application on any smartphone.

Module Variants

Four Capacity Options

All GRIDVAR-X modules share the same SiC platform and redundancy architecture. Mix capacities within the same parallel group for maximum flexibility.

30
kvar
SiC · > 100 kHz 4 µs response 220V – 380V
50
kvar
SiC · > 100 kHz 4 µs response 220V – 380V
100
kvar
Most specified
SiC · > 100 kHz 4 µs response 220V – 380V
150
kvar
SiC · > 100 kHz 4 µs response 220V – 380V

All modules: IP20 · 3P3W / 3P4W · Bluetooth / Mobile APP · RS485 / CAN / RJ45 · IEC 61000-3-4 / IEC 61439-1
Mixed-capacity parallel operation supported — up to 10 modules per group

Redundancy & Reliability

Built for Critical Industrial Uptime

In steel mills and arc furnace operations, compensation system downtime is not an option. GRIDVAR-X is designed with multiple overlapping redundancy mechanisms.

Automatic Fault Isolation

A faulty module detects its own fault and automatically disconnects from the parallel group. No operator action required — the remaining modules immediately increase output current to compensate for the lost capacity.

Smart Module Rotation

Operating hours are distributed equally across all parallel modules through smart rotation — extending the service life of each individual unit and reducing the maintenance burden of the system as a whole.

Hot-Swap Live Replacement

GRIDVAR-X modules support live hot-swap exchange under energised conditions. A faulty module can be physically replaced while the remaining modules continue compensating — zero production downtime.

No Central Controller Required

GRIDVAR-X uses peer-to-peer module communication — there is no single master controller whose failure would bring down the system. Load sharing mode (equal, fixed or intelligent) is fully configurable per module.

Applications

Where GRIDVAR-X Is Specified

When passive or standard IGBT-based active systems reach their limits — GRIDVAR-X is the answer.

⚡

Arc Furnace

The most demanding power quality environment. 4 µs SiC response eradicates arc furnace flicker and voltage sags before they affect neighbouring equipment.

🏭

Steel Rolling Mills

Combination of large motor drives, crane systems and high harmonic generation. GRIDVAR-X handles all three simultaneously with independent harmonic order selection.

⛏

Mining — Large Drives

High-power SAG mills, conveyors and crushers generating severe 5th, 7th, 11th and 13th harmonic currents that destroy capacitor banks and overheat transformers.

🏗

Port Cranes & Ship Loaders

Massive rapid reactive swings from container crane acceleration cycles. Only SiC response speed is fast enough to prevent voltage fluctuation on a shared bus.

🏥

Critical Facilities

Hospital imaging suites, clean-room production and precision manufacturing. GRIDVAR-X redundancy architecture ensures compensation is never interrupted.

💻

Hyperscale Data Centres

Large UPS input stages with severe harmonic injection. Independent per-order harmonic control meets the strictest utility grid code requirements.

🔋

Energy Storage Systems

Hybrid BESS + active power quality. GRIDVAR-X manages reactive power and harmonics alongside the PCS — preventing interaction between grid and battery.

☀

Large Renewables

Grid-connected solar and wind farms at the point of common coupling. Reactive support and harmonic compliance in a single compact active module.

Need standard IGBT for a more cost-sensitive project, or the ultra-compact 88 mm form factor for a retrofit? Compare GRIDVAR-X with the full GRIDVAR lineup.

Compare all GRIDVAR models

Ready to specify GRIDVAR-X for your critical installation?

Our engineering team will size the correct number of SiC modules, redundancy configuration and cabinet layout based on your facility's load profile and harmonic measurement data — at no cost before commitment.

Documents

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

Request a Quote — GRIDVAR-X

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