High-Power Damping Solution for Critical Infrastructure

Engineered for 20A continuous current at 10kV, the LQHDR damping resistor provides superior arc suppression and transient protection in high-energy systems. With ultra-low <5pC partial discharge and 0.1kΩ resistance, it ensures stability in:

• Switchgear and circuit breaker networks

• High-current busbar systems

• Short-circuit current limiters

• Power transformer inrush control

• Industrial rectifier protection

Technical Specifications

Performance Highlights

High-Current Stability

Stainless steel resistive elements maintain ±2% resistance tolerance under 20A continuous load (40kW power dissipation) with forced-air-free operation.

Advanced Thermal Design

Aluminum nitride ceramic core with integrated heat sinks ensures surface temperature rise ≤80K during 60-minute full-load operations.

Transient Suppression

0.1kΩ optimized resistance provides critical damping for:

• Busbar fault currents up to 50kA

• Circuit breaker restrikes

• Capacitor bank switching surges

Industry Applications

Switchgear Protection

Limits di/dt during breaker operations in 15kV-class switchyards

Transformer Inrush Control

Suppresses magnetizing inrush currents >12× rated current

Rectifier Systems

Protects thyristor stacks from voltage overshoot in HVDC converters

Installation & Safety

• Mounting: Horizontal installation with minimum 150mm clearance

• Connections: M12 flange terminals for 35mm² cables

• Safety Compliance: IEC 62271-200 (HV switchgear standards)

• Dielectric Test: 28kV/1min (per IEC 60060)