Product Overview

The LQDZ-125kVA contact-type voltage regulator delivers precision voltage control for industrial and laboratory applications. With a wide adjustable output range (0-650V) and dry-type construction, it ensures safe, stable power regulation in high-voltage environments. Engineered for 50Hz single-phase systems, it features advanced symmetrical compensation technology for linear voltage output.

Key Specifications

Advanced Features

1. Symmetrical Compensation Technology

Utilizes reversed polarity voltage regulation circuitry to ensure smooth, linear output voltage transitions. Eliminates waveform distortion even at maximum load capacity.

2. Intelligent Control System

• Servo motor-driven regulation for precise voltage adjustment

• Position indicator with terminal contacts

• Voltage interlock protection

3. Safety & Monitoring

• Magnetic oil surface indicator (for auxiliary systems)

• Protection contacts for overload safety

• Adjustable regulating speed (programmable stability)

Operational Guidelines

Critical Requirements:

1. Maintain ambient temperature <40°C for optimal dry-type cooling

2. Calibrate position indicator quarterly

3. Verify servo motor torque every 500 operation cycles

Warning: Exceeding 60-minute continuous operation at full load may trigger thermal protection shutdown.

Industry Applications

• Transformer Testing: Precision voltage ramp-up/down for dielectric tests

• Research Laboratories: Variable high-voltage supply for R&D

• Power Quality Simulation: Voltage fluctuation studies (IEC 61000-4-11 compliance)

Why Choose Contact-Type Regulation?

Unlike tap-switchers, contact-type regulators provide stepless voltage adjustment with:

• Zero interruption during voltage transitions

• Reduced arcing risk (no mechanical breakers)

• Higher waveform fidelity (<3% THD)

Compliance & Standards

Designed to meet:

• IEC 60076-11 (Dry-type transformers)

• IEEE C57.12.01 (General requirements)

• EN 50588 (Medium power transformers)

Maintenance Tips

1. Inspect carbon contacts every 6 months for wear

2. Verify calibration accuracy quarterly using reference voltmeters

3. Clean air vents monthly to maintain thermal performance