Robust Solution for High-Energy Electrical Testing

The LQHDR damping resistor delivers precision performance in critical high-voltage applications including impulse voltage generators, transformer testing circuits, and HVDC transmission systems. Engineered for extreme electrical and thermal stability under 400kV loads.

Technical Specifications

Key Performance Features

• Thermal Stability: Maintains structural integrity with <100K surface temperature rise during continuous operation

• Fail-Safe Insulation: Non-damaging breakdown protection under fault conditions

• High-Energy Dissipation: Optimized design for 10kW power handling at 50Hz

• Zero Resistance Drift: Stable 10kΩ value across full operational temperature range

Industrial Applications

1. Impulse Voltage Testing

Critical component in lightning impulse generators (1.2/50μs waveforms) for transformer and breaker certification per IEC 60060-4.

2. HVDC Transmission Systems

Damping switching transients in converter stations and filter circuits for 300kV+ DC networks.

3. Dielectric Test Platforms

Provides controlled discharge paths during partial discharge measurement and breakdown testing.

Safety & Compliance

• Designed for 100% rated voltage operation with no performance degradation

• Meets thermal requirements of IEC 60076 for power transformers

• Corona-free operation up to 400kV (tested per IEC 60270)

• External insulation withstands pollution degree III environments

Installation Guidelines

1. Maintain minimum 2.5m clearance to grounded surfaces

2. Use only with IEEE 1125-compliant bushings and connectors

3. Verify DC resistance before commissioning (tolerance: ±2%)

4. Perform infrared thermography after first 60-min load cycle