Precision Voltage Control for Critical Applications

The LQDZ-190kVA/0.48kV contact voltage regulator delivers 0-650V adjustable output with ≤3% waveform distortion. Engineered with symmetrical compensation circuitry and reversed polarity regulation, it ensures linear voltage control for industrial testing, manufacturing, and power quality management.

Technical Specifications

Core Technologies

1. Precision Regulation System

• DC Servo Motor Drive: Programmable adjustment speed (0.5-5V/sec)

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

• Reversed Polarity Design: Eliminates voltage transients during transitions

2. Advanced Protection Systems

• 5-Cycle Short-Circuit Protection: Zero damage to windings after repeated discharges

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

• Control Interlock: Safety lock between regulator and secondary switch (IEC 60204-1)

Thermal Performance & Duty Cycle

Temperature Rise Limits:

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

• Oil Surface: ≤55K at 100% load

• External Surface: ≤30K continuous operation

Continuous Operation: Unlimited runtime at 66% rated load (2/3UH, 2/3IH)

Physical Design & Construction

• Dimensions: 1200×650×1600mm (L×W×H)

• Weight: <1300kg

• Cooling System: ONAN (Oil Natural Air Natural)

• Termination: Heavy-duty copper busbars with anti-corrosion coating

Control & Monitoring Features

• Magnetic Oil Level Indicator: Real-time dielectric fluid monitoring

• Position Indicator with Contacts: Precise voltage setting feedback

• Programmable Regulation Speed: Adjustable ramp rates for different applications

• Remote Control Interface: Integration with SCADA systems

Industrial Applications

Optimized For:

• High-voltage equipment testing labs

• Transformer manufacturing quality control

• Power system simulation and research

• Industrial process voltage stabilization

"The LQDZ-190kVA's linear 0-650V output is indispensable for our IEC 60060-1 high-voltage testing protocols."

Chief Engineer, HV Testing Laboratory

Compliance & Certifications

• IEC 60076: Power transformers

• IEEE C57.12.90: Test code for liquid-immersed transformers

• IEC 61010-1: Electrical safety requirements

• EN 50588: Medium power transformers

Operational Advantages

1. Zero-Interruption Adjustment: Seamless voltage transitions without output cutoff

2. High Power Density: 190kVA capacity in compact footprint

3. Maintenance-Free Operation: Sealed tank design with moisture control

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