The DJW (Single-Phase) and SJW (Three-Phase) series microcomputer non-contact compensation type power regulators integrate advanced international power regulation technology engineered for demanding industrial power grids. By combining transformer winding compensation technology, solid-state non-contact thyristor switching, and high-speed microcomputer digital control, this heavy-duty AC voltage stabilizer delivers exceptional energy efficiency, millisecond-level dynamic response, and automatic three-phase balancing.
Utilizes industrial-grade solid-state electronic switches (SCRs) to replace conventional carbon brushes and servo motor mechanical drives. Completely eliminates carbon brush wear, physical friction, electric sparks, and mechanical drive failures, achieving a truly maintenance-free operational lifecycle.
Delivers high operating efficiency of ≥95% with negligible active loss. Features an ultra-fast dynamic response speed of 0.2s to 0.5s, instantly correcting grid voltage sags, surges, and transient spikes without waveform distortion or harmonic pollution.
Equipped with independent single-phase sampling and regulation loops across all three phases. Ensures that three-phase line and phase voltages remain strictly balanced and regulated even under extreme asymmetrical grid conditions or severe three-phase load imbalances.
Features patented suppression circuitry that eliminates common-mode current shocks and transient switching overvoltages inherently associated with electronic switching. Delivers outstanding instantaneous overload withstand capability (200% rated current for 1 minute).
Integrated MCU controller provides real-time monitoring, output delay sequencing, undervoltage alarm, overvoltage tripping, overcurrent protection, and optional phase loss/phase sequence anomaly protection, securing continuous uptime for mission-critical downstream loads.
Engineered for demanding commercial, medical, industrial, and telecommunications environments where power interruptions, voltage fluctuations, or equipment downtime cannot be tolerated:
Cellular telecom base stations, microwave relay towers, server centers, and fiber optic communication hubs requiring pure sine wave stability.
Hospital CT scanners, MRI systems, medical X-ray imaging, clinical diagnostic laboratories, and precision surgical instruments.
High-speed textile spinning machines, computerized knitting looms, SMT assembly lines, and automated industrial plants.
Radio broadcast transmitters, television relay stations, satellite uplinks, and multimedia production studios.
Advanced testing laboratories, metrology inspection devices, laser cutting equipment, and semiconductor test benches.
Commercial building passenger elevators, heavy freight lifts, escalators, and building HVAC automated management systems.
| Project / Parameter Item | Technical Specifications & Value |
|---|---|
| Input Voltage | Phase Voltage: 176V – 264V / 187V – 253V Line Voltage: 304V – 456V / 323V – 437V |
| Output Voltage | Single-Phase (DJW): 220V Three-Phase (SJW): 380V |
| Output Precision | 2% – 5% Adjustable (±1% high precision can be customized) |
| Frequency | 50Hz / 60Hz |
| Effectiveness (Efficiency) | ≥ 95% |
| Responding Speed | 0.2s – 0.5s |
| Ambient Temperature | -15°C – +40°C |
| Insulation Resistance | ≥ 5 MΩ |
| Overload Capacity | Double rated current (2 × In) for 1 minute |
| Waveform Distortion | No additional waveform distortion (Pure sine wave output) |
| Protective Function | Over-voltage, over-current, time delay (phase loss and phase sequence protection can be customized) |
| Number of Phase | Model Specifications | Output Power (kVA) | Maximum Output Current (A) | Overall Size (W×D×H) (cm) |
|---|---|---|---|---|
| Single-Phase (DJW Series) |
DJW-10K | 10 | 45 | 60 × 42 × 108 |
| DJW-15K | 15 | 68 | 60 × 42 × 108 | |
| DJW-20K | 20 | 91 | 60 × 42 × 108 | |
| DJW-30K | 30 | 136 | 60 × 42 × 108 | |
| DJW-50K | 50 | 227 | 60 × 52 × 125 | |
| DJW-60K | 60 | 272 | 60 × 52 × 125 | |
| DJW-80K | 80 | 364 | 70 × 62 × 158 | |
| DJW-100K | 100 | 455 | 70 × 62 × 158 | |
| Three-Phase (SJW Series) |
SJW-10K | 10 | 15 | 60 × 60 × 137 |
| SJW-15K | 15 | 23 | 60 × 60 × 137 | |
| SJW-20K | 20 | 30 | 60 × 60 × 137 | |
| SJW-30K | 30 | 45 | 60 × 60 × 137 | |
| SJW-50K | 50 | 76 | 60 × 60 × 137 | |
| SJW-100K | 60 | 152 | 80 × 70 × 160 | |
| SJW-150K | 80 | 227 | 80 × 70 × 160 | |
| SJW-180K | 180 | 273 | 80 × 70 × 160 | |
| SJW-200K | 200 | 303 | 100 × 75 × 180 | |
| SJW-225K | 225 | 333 | 100 × 80 × 180 | |
| SJW-250K | 250 | 379 | 100 × 80 × 180 | |
| SJW-300K | 300 | 455 | 110 × 80 × 180 | |
| SJW-400K | 400 | 608 | 85 × 125 × 210 | |
| SJW-500K | 500 | 760 | 85 × 125 × 210 | |
| SJW-600K | 600 | 912 | 85 × 125 × 210 | |
| SJW-800K | 800 | 1216 | 100 × 140 × 220 | |
| SJW-1000K | 1000 | 1520 | 100 × 140 × 220 |
As an established China source manufacturer and certified exporter, we provide end-to-end custom engineering, private labeling, and bulk supply solutions for worldwide electrical distributors, turnkey EPC contractors, and industrial equipment builders:
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Contact our electrical engineering team today to request a rapid competitive quote, project feasibility analysis, complete technical datasheet, or OEM customization details.
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