The Microtek Power Three-Phase Air-Cooled Servo Voltage Stabiliser is a precision-engineered voltage regulation system designed to maintain a balanced and stable three-phase output under varying input supply conditions. Incorporating a microprocessor-based control circuit, a servo motor–driven variable transformer (Variac), and a buck-boost transformer, the stabiliser continuously compensates for voltage fluctuations with high accuracy and fast response.
The air-cooled system delivers high regulation accuracy, low waveform distortion, and efficiency of up to 98%, ensuring optimum performance and protection for critical electrical loads. Comprehensive protection against over-voltage, under-voltage, overload, phase imbalance, phase reversal, single phasing, and short-circuit conditions enhances equipment reliability and operational safety.
| Parameter | Specification |
|---|---|
| Type of Stabilizer | Three Phase Servo Voltage Stabilizer – Unbalanced Type |
| Construction | Indoor Purpose |
| Type of Design | Servo Stabilizer with Off-Grid Sensing Feedback System |
| Type of Cooling | Air Cooled |
| Servo Motor Type | AC Synchronous Stepper Motor |
| Input Voltage Range | 295V – 480V (Customizable: 240–480V / 340–480V etc) |
| Input Frequency | 47 Hz – 53 Hz |
| Output Voltage | 415V (User Settable ±1%) |
| Output Voltage Regulation | ±1% |
| Control Design | Microcontroller (DSP) Based Control System |
| Waveform Distortion | Nil (Output waveform same as input) |
| Effect of Load PF on Output | Nil |
| Correction Speed | 60 V / Sec |
| Response Time | 10 ms |
| Efficiency | > 98% |
| Under / Over Voltage Cut-Off | Upper Limit +15% / Lower Limit -10% |
| Short Circuit Protection | HRC Fuse / Optional MCCB / MCB |
| Output Overload Protection | Electronic cut-off above 110% rated current |
| Phase Failure Protection | Built-in |
| Single Phasing Protection | Built-in |
| Stabilizer ON / OFF Operation | User Selectable Auto / Manual Restart |
| Display Type | Backlit LCD Display |
| Parameters Displayed | I/P & O/P Voltage (L-L & L-N), Current (R-Y-B), Frequency |
| Front Panel Indicators | LED Indicators for Input, Output, Fault, Bypass |
| Front Panel Interface | Menu, Up/Down, Enter, Reset Keys |
| Event Recorder | Fault History & System Status |
| Input / Output Connection | Terminal Block with Stud Arrangement |
| Emergency Manual Bypass | Built-in |
| Output Contactor | Built-in |
| Surge Protection Device (SPD) | Optional |
| Ambient Temperature | 0°C to 50°C |
| Rating in kVA | 10 kVA to 1500 kVA |
| Design Standards | As per IS 9815 |
