NewTrend · SiC terminal power quality regulator
Product overview
NewTrend PQR-SiC is a silicon-carbide-based regulator for the end of AC380V low-voltage feeders. It monitors three-phase voltage and combines phase-separated reactive-power regulation with three-phase active-power balancing. Rated outputs are35kVA and50kVA, with3P3W/3P4W grids and PVDG,VR or combinedPVDG+VR operating modes.
Technical selection summary
| Product Series | PQR-SiC, 380 V series |
|---|---|
| Rated Output Power | 35 kVA / 50 kVA |
| Operating Voltage | AC 380 V, -20% to +20% |
| Operating Frequency | 50/60 Hz ±1.5 Hz |
| Grid Configuration | Three-phase three-wire / three-phase four-wire |
| Control and Topology | DSP+CPLD digital control; T-type three-level topology |
| Selectable Functions | PVDG / VR / PVDG+VR |
| Output THDi | ≤3% |
| Voltage Unbalance Compensation | Post-compensation voltage unbalance ≤5% |
| Line-Voltage Adjustment Range | ≥15% when sufficient capacity is available |
| Total Response Time | <100 ms |
| Overload Capability | 1.2 × rated output for 60 s |
| Protection Functions | Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power-supply fault, overtemperature, abnormal frequency, and short circuit |
| Cooling Method | Natural air cooling |
| Noise | ≤40 dB |
| Communication | 2 × RS485; Wi-Fi by configuration |
| Installation Method | Clamp-type pole mounting |
| Cable Entry | Bottom entry |
| Overall dimensions | 525 × 885 × 220 mm |
| Weight | 42 kg / 47 kg, depending on configuration |
| Ambient Temperature | -10°C to +50°C; derating above 40°C |
| Pollution Level | Grade III or lower |
| Installation Altitude | Below 2,000 m; derating applies at higher altitudes |
| Enclosure Rating | IP66 |
| Parallel operation | Multiple modules supported |
Operation
- DSP+CPLD control,T-type three-level topology and PWM coordinate reactive-power regulation by phase with three-phase active-power balancing.
- PVDG is distributed photovoltaic regulation;VR is voltage regulation;PVDG+VR combines the two functions.
- Line-voltage adjustment depends on selected rating and available regulation capacity. The specified≥15% range applies when sufficient capacity is available.
Typical applications
- Low-voltage feeders with distributed photovoltaic or hydropower generation
- Long distribution feeders and industrial feeder ends affected by voltage or phase unbalance
- Traffic-tunnel systems with low incoming voltage,long feeders or frequent load changes
View or download PQR-SiC technical datasheet (PDF)
Product reference images and drawings
PQR-SiC overview, selection and installation
PQR-SiC electrical and environmental parameters
The 35kVA and50kVA ratings apply to the SiC version with IP66 and natural air cooling. Overall dimensions are listed as525×885×220mm; weight is42kg or47kg according to configuration. Select the operating mode and communication configuration for the feeder application. Installation and wiring must be performed by qualified electricians.
