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150kVA ~ 350kVA Range

LQDZ 300kVA |400V Input | 0-600V Adjustable Output |Manual Contact Voltage Regulator| Industrial Voltage Stabilizer

Industrial-grade LQDZ-300kVA contact-type voltage regulator with 0.4kV input, 0-0.6kV adjustable output, 500A current capacity, ≤3% THD, and short-circuit protection. Ideal for precision voltage control.


  • US$ 16,071.00
  • Lead time: 60 days

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Product Details

Product Tags

LQDZ 300kVA |400V Input | 0-600V Adjustable Output |Manual Contact Voltage Regulator|   Industrial Voltage Stabilizer

Precision Voltage Control for Critical Power Applications

Technical Specifications

ParameterValueStandard
ModelLQDZ-300kVA/0.4kV/0~0.6kVContact Type
Rated Capacity300 kVAIEC 60076
Input Voltage0.4 kVSingle Phase
Output Voltage Range0 - 0.6 kV AdjustableLinear Regulation
Output Current500 AContinuous Duty
Waveform Distortion≤3% THDIEC 61000-3-2
Impedance Voltage7.5% (50-100% linear adjustment)IEC 60076-1
Short-Circuit Endurance8 Cycles (No Winding Damage)IEC 60529
Cooling SystemONAN (Oil Natural Air Natural)IEC 60076-14

Advanced Voltage Regulation Technology

Innovative Circuit Design: Symmetrical compensation with reversed polarity regulation ensures linear output voltage and ultra-stable performance.

  • Electrical Drive Adjustment: DC servo motor enables precise voltage control with programmable regulation speed

  • Zero-Voltage Start: ≤1.5% starting voltage minimizes inrush currents

  • Real-Time Monitoring: Magnetic oil level indicator and position feedback system

  • Protection Systems: Terminal contacts and safety interlocks prevent operational hazards

Industrial Applications

Manufacturing Systems

Precision voltage supply for CNC machines, industrial lasers, and PLC-controlled production lines

Power Quality Management

Voltage stabilization in grid-tied systems with fluctuating input voltages

Test & Measurement

High-current testing of electrical components (cables, breakers, transformers)

Safety & Reliability Features

  • Interlock Protection: Synchronized shutdown with control tables and secondary switches

  • Thermal Management: ONAN cooling maintains optimal operating temperature during 1-hour continuous operation cycles

  • Short-Circuit Resistant: Withstands 8 discharge cycles without damage

  • Fail-Safe Design: Protection contacts trigger automatic shutdown during anomalies

Operational Advantages

  • Linear impedance adjustment (50-100% range) for consistent performance

  • Programmable regulation speed with servo motor precision

  • ±0.5% voltage stability under load variations

  • Low-maintenance design with accessible monitoring points

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