STATIC VAR GENERATOR
The principle of the SVG is very similar to that of the Active Power Filter, as demonstrated in the picture below. When the load is generating inductive or capacitive current, it makes the load current lag behind or lead the voltage. SVG detects the phase angle difference and generates leading or lagging current into the grid, making the phase angle of current almost the same as that of voltage on the transformer side, which means the fundamental power factor is unit.
SVG Structure
Sri Neevi PQC Series SVG is also modular in design, and the Sri Neevi SVG system consists of one or several SVG modules and an optional Liquid Crystal Monitor & Control Panel (LCM). Each SVG module is an independent reactive power compensation system, and users can change the SVG rating by adding or removing SVG modules.
SVG modules and LCM panel can be embedded in the Sri Neevi standard SVG cabinet or in a customised cabinet. There are usually breakers, cable terminals and a Surge Protection Device (SPD) in the SVG cabinet.
Features & Benefits
- Multifunctional: Reactive power and imbalance compensation
- High-speed, precise (-0.99 ≤ Cosφ ≤ 0.99), step-less, bi-directional compensation
- Negative & zero sequence imbalance correction, reduces neutral current
- Wide input voltage & frequency range for tough environments
- Low thermal loss (≤3%), efficiency ≥ 97%
- Modular design for standard or customized cabinets
- High stability with infinite grid impedance, avoids harmonic resonance
- Easy installation & maintenance; simple module replacement
- Wide capacity range: 50–350kvar per cabinet, up to 10 cabinets in parallel
- Works in 10–50°C environment, diesel generator compatible
- Full protection: over/under voltage, over current, over temperature
- Event log for easy troubleshooting
![APF Image](https://srineevipowercontrols.com/wp-content/uploads/2025/11/202410102059327662001.jpg")
Electrical Specification
| Parameter | Details |
|---|---|
| Rated Voltage | AC 400V |
| Input Voltage Range | AC 308V ~ 480V |
| Electric Connection | 3P3W / 3P4W |
| Rated Frequency | 50(60)Hz ±10% |
| Rated Capacity per Module | 50kvar |
| Rated Capacity per Cabinet | 50–350kvar (module combination) |
| Redundancy | Independent reactive compensation module system |
| Reactive Power Compensation | Inductive & capacitive, Cosφ ≥ 0.99 |
| Response Time | Full: <20ms Instant: <100µs |
| Thermal Loss | ≤ 3% of SVG rated capacity |
| Output Current Limitation | Automatic (100% rated capacity) |
| Parallel Expansion | Up to 10 racks (7 modules per cabinet) |
| MTBF | > 100,000 hours |
Control Technology & Specifications
Control Technology
- Switching Frequency: 30kHz
- Controller: DSP control
- Communication: Modbus Protocol, RS232/485
- Monitoring: PQC Monitor Software (Optional)
Physical Specification
- IP Grade of Cabinet: IP20, IP30 or customization
- Cooling Method: Intelligent forced air cooling
- Noise Level: < 60dB(A) @1m (Module)
- Dust Filter: Optional
- Dimension: Refer to SVG Model table
- Weight: Refer to SVG Model table
Environmental Requirement
- Ambient Temperature: -10 ~ 50°C
- Relative Humidity: 0 ~ 95%
-
Altitude: ≤ 1000m rated capacity
1000–2000m (derating 1% per 100m)