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KDZG Series DC High Voltage Generator – Portable Tester for Surge Arresters, Cables, Transformers &
KDZG Series DC High Voltage Generator – Portable Tester for Surge Arresters, Cables, Transformers &

KDZG Series DC High Voltage Generator – Portable Tester for Surge Arresters, Cables, Transformers &

Applications:

  • DC withstand and leakage current testing of zinc oxide (ZnO) and magnetic-blow surge arresters
  • Insulation integrity verification of power cables, transformers, generators, and circuit breakers
  • Preventive maintenance and commissioning tests in substations, power plants, railways, and chemical facilities
  • On-site R&D and quality assurance in high-voltage equipment manufacturing

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

Engineered with advanced PWM mid-frequency pulse-width modulation and closed-loop voltage feedback, the KDZG series ensures exceptional output stability and ultra-low ripple (<0.5%). Built with premium IGBTs and imported components from the U.S., Germany, and Japan, its compact epoxy-glass fiber multiplier tube offers high overload capacity and resilience—even against direct short-circuit discharges to ground. Designed for rugged field environments, it combines portability, safety, and laboratory-grade accuracy.

Features:

  • Output: 0–400 kV (negative polarity), continuously adjustable; 5 mA rated current
  • High Stability: Voltage stability ≤1% under ±10% input fluctuation; ripple coefficient ≤0.5%
  • One-Touch 0.75UDC@1mA Function: Simplifies ZnO arrester testing—press button to instantly read 75% reference voltage at 1 mA leakage
  • Dual Current Measurement: High-voltage end (circular shielded digital display) and low-voltage end for accurate leakage monitoring
  • Comprehensive Protection: Overvoltage (digital dial-set), overcurrent, zero-start interlock, grounding, and unique open-circuit detection
  • User-Friendly Design:
    • 0.1 kV voltage resolution, 1 µA current resolution
    • No external divider needed—voltage displayed directly on control box
    • Smooth, fine-tuned voltage adjustment via multi-turn potentiometer
    • Vertical/horizontal international-standard control cabinet for flexible site setup
  • Field-Optimized Construction:
    • Epoxy-glass fiber insulated multiplier tube—air-insulated, leak-proof, lightweight
    • Built-in support feet (for 200 kV models) and detachable wind-resistant base (control box lid)
    • Handles unlimited capacitive loads; supports 1.5× rated current charging
  • Robust Safety: Withstands full-rated-voltage discharge without damage; automatic shutdown after 30-minute continuous operation

Parameter:

Parameter Specification
Rated Output Voltage 0 – 400 kV (negative polarity), continuously adjustable
Rated Output Current 5 mA
Rated Power 2000 W
Voltage Measurement Accuracy ±(1.0% reading + 0.2 kV)
Current Measurement Accuracy ±(1.0% reading + 2 digits)
Ripple Coefficient ≤0.5%
Voltage Stability ≤1% (with ±10% AC input variation)
Overload Capability - 110% of rated voltage for 10 min (no load)
- Charging current up to 1.5× rated (7.5 mA)
Input Power Single-phase AC 220V ±10%, 50 Hz
Duty Cycle Intermittent use; max 30 minutes continuous
Operating Environment - Temperature: –10°C to +40°C
- Humidity: ≤85% RH at 25°C (non-condensing)
- Altitude: ≤1500 m
Capacitive Load Capability Unlimited; supports 1.5× rated current charging
Multiplier Tube Material Epoxy-glass fiber (air-insulated, no oil or gas)
Control Box Features