High Voltage Test Solutions
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<30kVA Range

LQDZ 5kVA |224 input | 0-250V Adjustable Output | Manual Contact Voltage Regulator|≤3% THD | Short-Circuit Protected
  • LQDZ 5kVA |224 input | 0-250V Adjustable Output | Manual Contact Voltage Regulator|≤3% THD | Short-Circuit Protected

LQDZ 5kVA |224 input | 0-250V Adjustable Output | Manual Contact Voltage Regulator|≤3% THD | Short-Circuit Protected

5kVA contact-type voltage regulator with DC motor drive (220V input → 0-250V output). Features linear impedance, ≤3% THD, 160% overload tolerance & ONAN cooling. 50Hz single-phase.


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Product Details

Product Tags

Technical Specifications

ParameterValueTechnical Advantage
Rated Capacity5 kVAPrecision power regulation
Input Voltage0.22 kV (220V)Standard mains compatibility
Output Voltage0-0.25 kV (0-250V)Continuously adjustable
Output Current20 AHigh-current capability
Voltage AdjustmentElectrical Drive (DC Motor)Smooth remote control operation
Starting Voltage≤1.5%Instant stable output
Impedance Voltage<7.5% (linear 50%-100% range)Consistent load performance
Waveform Distortion≤3%Laboratory-grade signal accuracy
Overload Capability1.2In (24A): 30 min
1.4In (28A): 15 min
1.6In (32A): 5 min		Industrial durability
Short-Circuit Withstand2.5In (50A) for 8 cyclesRobust fault protection
CoolingONAN (Oil Natural Air Natural)Efficient thermal management

Key Features

1. Precision Motorized Control

  • DC Motor Drive: Enables smooth voltage adjustment (remote operation compatible)

  • Position Indicators: Terminal/protection contacts + servo motor feedback

  • Symmetrical Compensation Circuit: Ensures linear output voltage (0-250V)

2. Advanced Protection System

  • Magnetic Oil Level Indicator: Real-time coolant monitoring

  • Interlock System: Synchronizes regulator, control table, and secondary switches

  • Short-Circuit Resilience: Withstands 50A surges (160ms) without damage

3. Industrial-Grade Performance

  • Linear Impedance: Stable regulation across 50%-100% operating range

  • Programmable Speed: Adjustable regulation rate for process control

  • ONAN Cooling: Maintains safe temperatures during overloads

Safety & Monitoring

  • Reversed Polarity Circuit: Prevents output waveform distortion

  • Protection Contacts: Auto-cutoff at position limits

  • Thermal Safeguards:

    • Oil temperature monitoring

    • Winding thermal protection

Applications

  • Laboratory Testing: Precision power for calibration labs

  • Industrial Automation: Integration with PLC-controlled systems

  • Equipment Burn-in: Stress testing of 220-250V devices

  • Prototype Development: Variable voltage R&D environments


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