Factory-assembled reactive power compensation cabinets built with Forte GRIDVAR modules. Three tiers: Standard (GRIDVAR-G), Compact (GRIDVAR-C) and Premium SiC (GRIDVAR-X). The cabinet platform is the same; the module sets the performance.
Forte SVG Panels are factory-assembled reactive power compensation cabinets, each built around one of three GRIDVAR module tiers. The panel platform is the same in all three: CT, main breaker, HMI, controller and internal wiring. Only the active module changes.
GRIDVAR-G Panel: Standard Series. IGBT, 220V–690V, 30–100 kvar/module. For general industry and 690V plants.
GRIDVAR-C Panel: Compact Series. High-density IGBT, 400V, 35–100 kvar/module. 88 mm drawer modules for retrofit and tight cabinets.
GRIDVAR-X Panel: Premium SiC Series. Silicon Carbide, 220V–380V, 30–150 kvar/module. 4 µs response for arc furnaces.
All three deliver stepless reactive power compensation. Harmonic suppression comes from residual capacity only. Where dedicated harmonic filtering is required, a GRIDSINE AHF Panel is specified separately. Cabinets run in parallel for higher capacity, and every cabinet passes FAT before shipment.
Same cabinet platform in all three. The active module sets the performance.
| Parameter | GRIDVAR-G Panel | GRIDVAR-C Panel | GRIDVAR-X Panel |
|---|---|---|---|
| Series | Standard | Compact | Premium SiC |
| Switching technology | Advanced IGBT, 3-Level | High-Density IGBT, 3-Level | SiC MOSFET, 3-Level |
| Operating voltage | 220V / 400V / 480V / 690V | 400V (±15%) | 220V – 380V |
| Module capacity | 30 · 50 · 75 · 100 kvar | 35 · 50 · 75 · 100 kvar | 30 · 50 · 100 · 150 kvar |
| Response time | ≤ 50 µs / ≤ 5 ms total | ≤ 5 ms | 4 µs |
| Switching frequency | 25.6 kHz | 20 kHz | > 100 kHz |
| System efficiency | > 97.5% | ≥ 97.5% | up to 98% |
| Function | SVG — harmonics on residual capacity | SVG — harmonics on residual capacity | SVG — harmonics on residual capacity |
| Harmonic filtering | 2nd – 25th | 2nd – 51st | 2nd – 51st |
| Max. parallel modules | 20 modules | 20 modules | 10 modules |
| Operating temperature | −20°C ~ +55°C | −25°C ~ +55°C | −25°C ~ +55°C |
| Best for | General industry, 690V plants | Retrofit, tight cabinet spaces | Arc furnaces, steel, critical loads |
These features are standard across all three SVG Panel types.
| Parameter | Specification |
|---|---|
| Product | Forte SVG Panel — Active Compensation Cabinet |
| Frequency | 50 / 60 Hz |
| Connection type | 3P3W and 3P4W |
| Power factor target | Adjustable −1 to 1 (cosφ = 1.00 achievable) |
| 3-Phase balancing | Yes — active phase balancing |
| Communication | Modbus RTU + Ethernet + RS485 |
| HMI | 7″ / 10″ touch screen LCD (standard) |
| Remote monitoring | Ethernet-based SCADA integration |
| Protection | Integrated main breaker, surge protection, thermal monitoring |
| Current transformers | Built-in CTs (matched to cabinet capacity) |
| Enclosure rating | IP31 / IP42 / IP54 (configurable) |
| Cooling | Forced fan cooling with smart speed control |
| Parallel operation | Multiple cabinets in parallel — linear capacity scaling |
| Factory testing | Full FAT before shipment (load simulation, protection, comms) |
| Standards | IEC 61000-3-4 / IEC 61439-1 |
Every SVG Panel goes through factory acceptance testing before shipment: load simulation, protection trip verification and communication checks. It arrives on site ready to energise.
Built around GRIDVAR active SVG modules, the same modules sold standalone. Each module is replaceable on its own for on-site maintenance.
Main circuit breaker, surge arresters, thermal sensors and overcurrent protection are factory-installed and tested. No further protection engineering on site.
Touch screen HMI, 7″ or 10″ depending on configuration. Shows power factor, reactive power, voltage, current waveforms and system alarms.
Ethernet and Modbus RTU interfaces connect the panel to SCADA. Alarms and performance data are read remotely.
Several SVG Panels run in parallel with automatic load sharing. A site can start with one cabinet and add more as the load grows.
Three cases where stepless compensation decides the choice.
Main LV busbar compensation for factories with several production lines and variable reactive demand.
Pumping stations with VFD-driven motors. Reactive compensation without the resonance risk of a capacitor bank.
Rapidly cycling injection moulding and weaving machines with a highly variable reactive demand profile.
Cabinet capacity and module tier follow from the load profile and reactive demand. Sizing is free of charge before any commitment.
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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