Static Var Generators, Corrected in Milliseconds
≥99% reactive power compensation in under 10 ms — GY-SVG modules from 3 to 150 kvar, 220–800 V, with none of the resonance risk of capacitor banks.
One Platform, Four Builds
Every build runs the TI TMS320F28335 DSP core at 50/60 Hz (45–63 Hz grid tolerance), in rack, wall or cabinet mounting.
| Model | Build | Voltage | Capacity | Highlights |
|---|---|---|---|---|
| GY-SVG | Rack / wall module | 220 V | 3–75 kvar | Single-phase L/N (5 kvar) or three-phase 3-/4-wire; 16 kHz |
| GY-SVG | Rack / wall module | 380 V | 5–150 kvar | Three-phase three-/four-wire; 16 kHz |
| GY-SVG | Rack / wall module | 500 / 690 / 800 V | 90 / 120 / 150 kvar | 12.8 kHz; 800 V build is three-wire, reactive-only |
| GY-SVG-PLUS | High-spec module | 220 / 380 V | 37–100 kvar | Neutral filtering 3× phase capacity; resonance protection; EMC Class A (RE/CE) |
| GY-SVG-SiC | SiC module | 220 / 380 V | 37–100 kvar | 30 kHz SiC switching; neutral 3×; EMC Class A (RE/CE) |
| GY-SVG-cabinet | Cabinet system | 220–800 V | 50–900 kvar | Up to 600 kvar at 380 V / 900 kvar at 800 V; vertical install |
Full response <10 ms · reactive compensation ≥99% (cabinet systems ≥95%) · unbalance after compensation ≤5% · efficiency ≥97% · overload 1.2× rated for 60 s · unlimited parallel operation · 2× RS485 (Wi-Fi supported) · noise ≤60–65 dB (cabinet ≤75 dB) · IP20, IP54 on request.
A Current Source, Not a Capacitor Bank
No resonance, ever
An active current source cannot resonate with system harmonics, and keeps compensating even when grid voltage sags — the failure modes of capacitor banks simply don't apply.
Tracks impact loads
Millisecond dynamic response follows welders, presses, hoists and furnace loads that step-switched capacitor compensation can never catch.
10 / 35 kV without an MV cabinet
High-side sampling with low-side compensation: sample the metered MV point, install on the 400/800 V side, and pass the utility power-factor assessment.
Scales with your load
Unlimited paralleling across rack, wall and cabinet builds — extend capacity module by module as the plant grows, no oversizing on day one.
Questions Engineers Actually Ask
SVG vs traditional capacitor banks — what is the difference?
Capacitor banks compensate in fixed steps, respond in 50–60 ms, and can resonate with system harmonics. An SVG compensates continuously and bidirectionally in under 10 ms, is unaffected by grid-voltage dips and causes no resonance — the safe choice on harmonic-rich buses.
Can a low-voltage SVG correct power factor on the 10 kV / 35 kV side?
Yes. With high-side sampling and low-side compensation, a CT or multifunction meter samples the 10/35 kV metering point while the SVG installs on the 400/800 V side and indirectly corrects the high-side power factor to pass the utility assessment (typically ≥0.95).
Standard, PLUS or SiC — which SVG build do I need?
The standard GY-SVG covers most reactive and unbalance duties from 3 to 150 kvar per module. Choose PLUS for heavy neutral currents (3× phase filtering capacity), resonance protection and EMC Class A compliance; choose SiC for the same high-spec feature set switching at 30 kHz — a smoother output waveform and faster current tracking from silicon-carbide devices.
Tell Us Your Power Factor
Send your single-line diagram and measured power factor — our engineers will size the SVG in kvar and confirm targets before you order.
See SVG at work in new energy plants, metallurgy & mining and all solutions.
