20kVA Contact Voltage Regulator | 0-420V Precision Output | IEC-Compliant

⚡ 47.6A Continuous Current

🛡️ 2× Short-Circuit Withstand

📏 ≤3% Waveform Distortion

Industrial-Grade Voltage Regulation for Critical Power Applications

The LQDZ-20kVA contact voltage regulator delivers laboratory-grade precision in demanding industrial environments. Engineered to IEC 60076 standards, this single-phase regulator provides stable 0-420V output with ≤3% THD distortion during continuous 60-minute operation at full 47.6A load. Featuring advanced symmetrical compensation technology, it's ideal for transformer testing, high-voltage calibration, and precision manufacturing processes.

Input: 440V AC ±10% | Output: 0-420V AC

Dimensions: 800×700×1500mm (W×D×H) | Weight: 350kg

Cooling: ONAN | Duty Cycle: 60 min @ 100% load

Technical Specifications

Technical Insight: Symmetrical Compensation

Our reversed polarity circuit eliminates voltage drift through:

Vout = Vref × [1 + k(1 - Vactual/Vmax)]

Where compensation factor k = 0.18 maintains linearity across full operating range

Advanced Protection & Control Systems

Position Limiting System

• Upper/lower mechanical limit switches

• Protection contacts with redundant circuits

• Position indicator with visual feedback

Precision Drive Mechanism

• Servo motor control with 0.1° accuracy

• Adjustable regulation speed (2-20 V/s)

• Anti-backlash gearing system

Monitoring Systems

• Magnetic oil level indicator

• Temperature-compensated sensors

• Terminal contacts for remote monitoring

Short-Circuit Performance

Damping Resistor Technology

During transformer discharge testing:

• Withstands 95.2A (2× rated current) for 160ms

• 8 full cycles at 50Hz frequency

• Prevents winding deformation or mechanical damage

Energy dissipation: E = I² × R × t

Where R = damping resistance, t = 160ms

Certifications & Compliance

IEC 60076

IEC 61010-1

CAT IV 600V

IP54 Enclosure

RoHS 3