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>350kVA Range

LQDZ 400kVA |3kV Input | 0-3.3kV Adjustable Output |Manual Contact Voltage Regulator| Industrial Voltage Stabilizer

Technical specifications for LQDZ-400kVA contact regulator: 0~3.3kV output, 50Hz operation, DC motor control, and short-circuit protection for industrial applications.


  • US$ 24,591.00
  • Lead time: 60 days

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Product Details

Product Tags

LQDZ 400kVA |3kV Input | 0-3.3kV Adjustable Output |Manual Contact Voltage Regulator|   Industrial Voltage Stabilizer

Core Technical Specifications

ParameterSpecificationIndustrial Advantage
Rated Capacity400kVAHeavy industrial power handling
Input Voltage3kVMedium-voltage compatibility
Output Voltage Range0~3.3kVWide adjustable range
Input Current133.3AEfficient power conversion
Output Current121.2APrecision current delivery
Frequency50HzEuropean/Asian grid compatibility
Waveform Distortion≤3%Clean power for sensitive equipment
Starting Voltage≤1.5%Smooth startup sequence

Advanced Control & Regulation

Precision Servo Drive

DC motor adjustment with programmable speed control for exact voltage positioning

Symmetrical Compensation

Reversed polarity circuit ensures linear output (±0.2%) under load fluctuations

Integrated Monitoring System

  • Magnetic oil level indicator

  • Position indicator with terminal contacts

  • Protection contacts for overload safety

Robust Protection Features

Short-Circuit Resilience

Withstands 5 continuous discharge cycles without winding damage

Safety Interlock System

Synchronized operation between regulator, control panel, and secondary switches

Thermal Management

  • ONAN (Oil Natural Air Natural) cooling

  • Certified 1-hour continuous operation at full load

  • Automatic thermal protection

"The symmetrical compensation circuit maintains voltage stability within 0.25% during 0-3.3kV transitions - critical for high-voltage testing applications."

Performance Specifications

Performance MetricLQDZ-400kVA CapabilityIndustry Standard
Voltage Adjustment Range0-3.3kV (100% range)70-80% typical
Regulation Linearity±0.25% (symmetrical compensation)±1.0-1.5%
Short-Circuit Tolerance5 full discharge cycles2-3 cycles
Cooling EfficiencyONAN with 1-hour continuous rating30-minute typical

Industrial Applications

Power Generation

  • Substation voltage regulation

  • Transformer testing

  • Grid simulation

Industrial Manufacturing

  • High-voltage equipment testing

  • Process control systems

  • Quality assurance testing

Research & Development

  • High-voltage laboratories

  • Material dielectric testing

  • Prototype validation

Compliance & Standards

  • Designed to IEC 60076 power transformer standards

  • Meets IEEE C57.15 voltage regulator requirements

  • CE certified for European markets

  • RoHS compliant materials

Installation & Maintenance

Space Requirements

Minimum 1500mm clearance for ventilation and maintenance access

Maintenance Protocol

  • Annual oil testing

  • Biennial contact inspection

  • 5-year comprehensive overhaul

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