Engineering Excellence in Voltage Regulation

The LQDZ-160kVA/0.48kV contact voltage regulator delivers precision 0-650V adjustable output for industrial testing, manufacturing, and power quality applications. Featuring symmetrical compensation circuitry and reversed polarity voltage regulation, it maintains linear output with ≤3% waveform distortion under 246.2A load.

Technical Specifications

Advanced Engineering Features

1. Precision Control System

• DC Servo Motor Drive: Smooth voltage adjustment (0.5-5V/sec programmable)

• Symmetrical Compensation Circuit: Ensures linear output (±0.5% deviation)

• Reversed Polarity Design: Eliminates voltage spikes during transitions

2. Robust Protection Systems

• Triple-Sensor Monitoring: Magnetic oil indicator + Position contacts + Protection contacts

• Short-Circuit Reinforced: Withstands 5 consecutive discharge cycles

• Control Interlock: Prevents unauthorized operation (IEC 60204-1 compliant)

Thermal Performance Data

Temperature Rise Limits (IEC 60076-7):

• Winding: ≤65K at 100% load (60min operation)

• Oil Surface: ≤55K at 100% load

• External Surface: ≤30K continuous operation

Continuous Operation: Unlimited runtime at 2/3 rated voltage & current

Physical Design & Construction

• Dimensions: 1200×650×1600mm (L×W×H)

• Weight: <1300kg

• Cooling System: ONAN (Oil Natural Air Natural)

• Termination: Copper busbars with anti-corrosion coating

Industrial Applications

Ideal for:

• High-power component burn-in testing

• Transformer manufacturing quality validation

• Power system simulation labs

• Industrial process voltage stabilization

"The LQDZ's linear 0-650V ramp capability is critical for IEC 60270 partial discharge testing in our HV lab."

Power Systems Engineer, Siemens HV Division

Compliance & Certifications

• IEC 60076: Power transformers

• IEEE C57.12.00: Liquid-immersed transformers

• IEC 61010-1: Electrical safety requirements

• EN 50588: Medium power transformers

Operational Advantages

1. Zero-Interruption Adjustment: Continuous voltage transition without output cutoff

2. ONAN Efficiency: 160kVA capacity with passive cooling

3. Reduced Maintenance: Sealed tank design with silica gel breather

4. Precision Control: ±0.25% voltage stability under load variance