The Qoltec Avr Multiprotection 40 kVA three-phase voltage stabilizer automatically regulates the voltage using a servomotor system that moves the regulator in response to changes in the power supply. It stabilizes the output at 380 V AC with an accuracy of ±3%, smoothly correcting fluctuations without manual intervention. Its six-transformer system independently controls the three phases.

The Multi-Protection system guards against phase and neutral reversal, phase or neutral loss, incorrect phase sequence, and excessive overvoltage. The LCD displays real-time voltage and current readings for phases L1, L2, and L3, along with indicators for low or high voltage, overload, overheating, and phase loss. It is suitable for three-phase loads such as heat pumps, compressors, motors, production machinery, automation systems, refrigeration and air-conditioning equipment, servers, and professional electronic devices.

• Type: Servomotor
• Phases: Three-phase
• Rated power: 40 kVA
• Output voltage: 380 V AC
• Stabilization accuracy: ±3%
• Transformer system: 6 transformers: 3 Variac autotransformers and 3 compensation transformers
• Phase control: Independent control of phases L1, L2, and L3
• Protection: Against phase and neutral reversal, phase or neutral loss, incorrect phase sequence, and excessive overvoltage
• Display: LCD
• Display indicators: Voltage and current per phase, low or high voltage, overload, overheating, and phase loss