Space-Efficient HV Damping Solution

Designed for compact test systems, the LQHDR damping resistor delivers <5pC partial discharge performance at 12kV in an ultra-compact Ø70×115mm package. With 1kΩ resistance and flexible operating modes, it provides precision damping for:

• Portable PD test sets

• Transformer diagnostic equipment

• Field testing instruments

• Lab-grade HV measurement

⌀70mm

↓

115mm

Technical Specifications

Flexible Operating Modes

Standard Operation

60 minutes continuous at 100% rated voltage (12kV) and current (0.1A)

Extended Operation

Unlimited runtime at 80% rated voltage (9.6kV) and current (0.08A)

Thermal Management

Maintains surface temperature rise ≤80K during continuous operation at 100% load through:

• Aluminum oxide ceramic core with high thermal conductivity

• Optimized surface-area-to-volume ratio

• Passive cooling fins integrated into housing

Key Features

Ultra-Compact Design

At just Ø70×115mm and <5kg, this is one of the smallest 12kV damping resistors available - ideal for portable test equipment and confined spaces.

Laboratory-Grade Precision

1kΩ ±1% tolerance ensures accurate waveform control in:

• HV probe calibration

• Divider ratio verification

• Oscillation damping circuits

Low-PD Construction

Triple-shielded design maintains <5pC background noise for sensitive partial discharge measurements per IEC 60270.

Field Applications

Portable PD Testing

Critical component in handheld partial discharge detectors for:

• Substation equipment checks

• Cable termination assessments

• Rotating machine diagnostics

Transformer Testing

Provides stable damping for:

• Turns ratio test sets

• Winding resistance measurements

• Impulse testing circuits

Installation & Safety

• Mounting: Vertical or horizontal orientation

• Clearance: Minimum 30mm to grounded surfaces

• Connections: BNC connectors (50Ω coaxial)

• Safety: Automatic discharge circuit (RC time constant <5s)

• Environment: -25°C to +55°C operating range