Qoltec 15kVA Three-Phase Servomotor Voltage Stabilizer AVR with LCD Display, ±3% Accuracy, Expert Line

Delivering a robust 15kVA capacity with an impressive ±3% output voltage accuracy, this Qoltec three-phase automatic voltage regulator (AVR) ensures your industrial equipment receives stable, clean power. The servomotor-driven stabilization technology continuously adjusts voltage levels, protecting sensitive machinery from harmful fluctuations.

Overview

Engineered for demanding three-phase applications, the Qoltec Expert Line voltage stabilizer handles input voltages from 280V to 430V AC (phase-to-phase) and delivers a consistent 380V AC output. Its advanced servomotor mechanism provides precise, real-time corrections, while the built-in LCD display offers clear monitoring of input/output voltage and system status. Whether safeguarding CNC machines, medical devices, or server rooms, this unit is built to perform.

What stands out

• High 15kVA power capacity for heavy-duty loads
• Servomotor stabilization with ±3% output accuracy
• Wide input voltage range: 280–430V AC (phase-to-phase)
• Integrated LCD display for real-time status
• Comprehensive protection: overload, over/undervoltage, overheating, short circuit
• Selectable delay time (6s or 180s) to prevent frequent switching
• High efficiency >95% for energy savings
• Rugged metal housing with IP20 protection

Technical details

• Capacity: 15 kVA
• Phases: Three-phase (3F)
• Technology: Servomotor
• Input voltage range: 280–430V AC (phase-to-phase)
• Output voltage: 380V AC (phase-to-phase)
• Output accuracy: ±3%
• Frequency: 50/60 Hz
• Efficiency: >95%
• Response time: <1s
• Delay time: 6s / 180s (selectable)
• Cooling: Air cooling
• Operating temperature: -10°C to +40°C
• Insulation class: F
• Protection class: IP20
• Power factor: 0.8
• Construction: Metal

Our verdict

A reliable and precise three-phase voltage stabilizer that combines high capacity, accurate regulation, and essential protections—ideal for industrial and commercial environments where power quality is critical.