Product Overview

The LQHDR series damping resistor delivers precision performance in high-voltage testing environments. Engineered for 200kV systems with a nominal resistance of 5kΩ, this component suppresses oscillations in impulse voltage circuits while ensuring accurate measurements in partial discharge (PD) diagnostics. Ideal for power utilities, transformer testing, and HV research labs.

Key Technical Specifications

Critical Performance Features

Ultra-Low Partial Discharge

With PD levels <10pC at 200kV, the resistor minimizes measurement interference during sensitive dielectric tests, ensuring compliance with IEC 60270 standards.

Thermal Stability

Engineered for <80K surface temperature rise during continuous 1-hour operation at full load, preventing thermal runaway in high-duty cycles.

Compact High-Voltage Design

Optimized cylindrical form (Ø170mm/115mm × 850mm) and lightweight construction (<19kg) simplify integration into HV test benches and mobile systems.

Industrial Applications

• Impulse Voltage Generators – Damps oscillations in lightning/surge testing circuits per IEC 60060-1

• Partial Discharge Measurement – Provides stable resistance for PD detection systems

• Transformer Testing

  Benchtop HV testers (0-50kV)
  Renewable Energy	Solar farm cable diagnostics	TDR meters with HV compatibility

Maintenance Best Practices

Extend equipment lifespan with:

• Annual recalibration (ISO 17025 accredited labs)

• Dielectric fluid testing for oil-filled devices

• Environmental sealing checks (IP67 rating recommended)

Pro Tip: Use infrared thermography quarterly to detect abnormal heat patterns in HV connectors.

Emerging Technologies in HV Measurement

Recent innovations include:

• Fiber-optic voltage sensors for EMI-resistant readings

• IoT-enabled devices for remote grid monitoring

• AI-driven predictive analytics for insulation degradation