High-Voltage Damping Solution with Minimal Footprint

The LQHDR 400kV/5kΩ damping resistor delivers critical energy dissipation for impulse testing and transformer diagnostics while optimizing space with its compact cylindrical design. Engineered for 50Hz systems requiring reliable performance in confined installations.

Technical Specifications

Key Advantages

• Space-Optimized Design: Ф400×1000mm cylinder fits confined substation areas

• Lightweight Construction: Under 40kg for easy mounting and transport

• Full-Load Endurance: Certified 60-min operation at 400kV/0.35A

• Precision Resistance: 5kΩ ±2% stability during thermal transients

• Corona-Free Operation: Smooth electrode design prevents partial discharges

Typical Applications

Mobile Test Labs

Ideal for compact HV test vehicles performing on-site transformer diagnostics

GIS Substations

Space-efficient solution for gas-insulated switchgear impulse testing

University Research

Laboratory-scale HV experiments with limited floor space

Mechanical Design

• Cylindrical Form Factor: Ф350mm core with Ф400mm external insulation

• Elevated Terminal Design: Reduced surface leakage in humid environments

• Modular Mounting: Flange options for vertical/horizontal installation

• UV-Resistant Housing: Fiberglass-reinforced epoxy for outdoor use

Note: Maintain minimum 1.5m clearance to grounded surfaces per IEC 61958

Compliance & Safety

• Dielectric strength tested per IEC 60060-2

• Thermal stability certified to IEC 60544

• Pollution degree III compliance (up to 25kV/cm creepage)

• Short-circuit withstand: 20kA/0.1s (calculated from I²t rating)