Silicon carbide switching device. > 100 kHz switching frequency. 4 µs instantaneous response. Up to 98% efficiency. For arc furnaces, steel rolling mills and port cranes.
GRIDVAR-X is the top tier of the GRIDVAR family. Its power stage uses silicon carbide (SiC) switches instead of IGBTs. SiC switches at > 100 kHz, so the compensation current tracks the reference more closely than an IGBT stage can.
Instantaneous response is 4 µs; full response is ¼ cycle for the fundamental and 1 cycle for harmonics. Transients from arc furnaces, large presses and crane drives are countered before they reach the grid. System efficiency is up to 98%, which lowers losses and cooling load.
Up to 10 modules run in parallel with automatic fault isolation. Configuration is over Bluetooth and the mobile app. Harmonic orders 2 to 51 are selected individually.
Values from the GRIDVAR-X datasheet.
| Parameter | Specification |
|---|---|
| Product series | GRIDVAR-X — Premium SiC Active SVG |
| Control algorithm | Current dual closed-loop active damping |
| Switching device | Silicon Carbide (SiC) |
| Function | SVG (Reactive Power Compensation) — primary. Harmonic filtering to the extent of residual capacity; dedicated filtering is a GRIDSINE-X unit. |
| Operating voltage | 220V – 380V (+10% / −15%) |
| Frequency | 50 / 60 Hz (±5%) |
| Connection type | 3-Phase 3-Wire (3P3W) and 3-Phase 4-Wire (3P4W) |
| Module capacity options | 30 kvar · 50 kvar · 100 kvar · 150 kvar |
| Instantaneous response | 4 µs |
| Full response time | ¼ cycle (fundamental) / 1 cycle (harmonic) |
| Switching frequency | > 100 kHz |
| System efficiency | up to 98% |
| Power factor target | Configurable −1 to 1 (cosφ = 1.00 achievable) |
| Harmonic filtering range | 2nd – 51st harmonic (independent per-order selection) |
| Resonance suppression | Active suppression |
| 3-Phase load balancing | Yes — active phase and neutral current balancing |
| Max. parallel modules | Up to 10 modules (smart rotation) |
| Parallel current sharing | Equal, fixed, or intelligent (assignable ratio per module) |
| Redundancy | Faulty module auto-isolates; remaining modules increase output to compensate |
| Hot-swap | Live 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 |
| Cooling | Forced-air cooling, adaptive fan speed control |
| Communication interface | Bluetooth / Mobile APP, RS485 / CAN / RJ45 |
| Capacitor switching | Configurable group or individual compensation switching control |
| CT specification | 5A — load side or grid side |
| Seismic rating | IBC certified |
| IP protection | IP20 (other levels customisable) |
| PCBA protection | Environmentally friendly conformal coating |
| Standards | IEC 61000-3-4 / IEC 61439-1 |
Instantaneous response to arc furnace transients, crane impacts and press cycles is 4 µs; full response is ¼ cycle. The disturbance is countered before it causes a voltage sag or an equipment trip.
Switching at > 100 kHz gives a compensation current with less ripple and a finer reaction to small grid fluctuations.
Lower conduction and switching losses in SiC give up to 98% system efficiency. In a large installation that means less heat to remove from the cabinet.
Filtering covers orders 2 to 51, within residual capacity. Each order is enabled or disabled individually, so the filter can be tuned to the grid code that applies.
Harmonic priorities, power factor target and load-sharing ratios are set and monitored over Bluetooth from the mobile app.
Same SiC platform in all four sizes. Capacities can be mixed within one parallel group.
All modules: IP20 · 3P3W / 3P4W · Bluetooth / Mobile APP · RS485 / CAN / RJ45 · IEC 61000-3-4 / IEC 61439-1
Mixed-capacity parallel operation, up to 10 modules per group
Four mechanisms keep the parallel group compensating when one module drops out.
A faulty module detects its own fault and automatically disconnects from the parallel group. No operator action is required. The remaining modules increase output current to cover the lost capacity.
Smart rotation spreads operating hours evenly across the parallel modules, so no single unit ages faster than the rest.
A faulty module can be exchanged while the rest of the group stays energised and keeps compensating. Availability on the SiC variant is confirmed at order (see the specification table).
Modules communicate peer to peer. There is no single master controller whose failure would stop the group. Load sharing (equal, fixed or intelligent) is set per module.
4 µs response to arc furnace flicker and voltage sags, before they reach neighbouring equipment.
Large motor drives, crane systems and high harmonic generation on one bus. GRIDVAR-X covers all three, with each harmonic order selected individually.
Container crane acceleration cycles cause large reactive swings on a shared bus. The 4 µs response counters them before the bus voltage moves.
Hospital imaging suites, clean rooms and precision manufacturing. If one module fails, the rest of the group keeps compensating.
Module count, redundancy configuration and cabinet layout follow from the measurement data.
Technical documents for this product. Ask for a document still in preparation and we will send it as soon as it is ready.
We reply within 1 business day. Urgent: +90 850 840 64 24