Engineered for Critical HV Systems

The LQHDR 30kV/10kΩ damping resistor delivers exceptional performance in impulse voltage testing, PD measurement, and transformer diagnostics. Designed to suppress oscillations in high-voltage circuits, this industrial-grade component ensures accurate measurements while protecting sensitive equipment from transient surges.

Technical Specifications

Key Performance Features

Ultra-Low Partial Discharge

With PD levels maintained below 3pC at rated voltage, the LQHDR minimizes measurement interference in precision test environments, ensuring reliable compliance with IEC 60270 requirements.

Thermal Stability

Engineered with non-inductive winding and ceramic core technology to limit temperature rise to 80K maximum during continuous 60-minute operation at 30kV/0.5A.

High-Energy Dissipation

Specialized oxide coating withstands 180J/mm³ energy density, preventing hotspots during lightning impulse tests (1.2/50μs waveforms per IEC 60060).

Industrial Applications

• Impulse Voltage Generators: Waveform shaping in 0.1-100kA test systems

• Partial Discharge Detectors: Reference impedance for calibrating PD measurement circuits

• Transformer Testing: Damping switching surges in IEC 60076-3 tests

• HVDC Systems: Harmonic suppression in converter stations

Case Example: Reduced oscillation amplitude by 92% in 400kV GIS commissioning tests.

Safety & Compliance

Designed for operation in CAT IV 600V environments with dual-isolation terminals. Meets critical standards:

• Dielectric Strength: 75kV/min (IEC 61010-1)

• Environmental Rating: IP54 (dust/moisture resistant)

• Flame Resistance: UL94 V-0 certified housing

Configuration Notes

1. Mount vertically with ≥150mm clearance to grounded surfaces

2. Use corona rings above 25kV applications

3. Annual recalibration recommended per ISO 17025

Warning: Do not exceed 60-minute continuous operation at full rating.