Industrial-Grade Power Stabilization

Engineered for extreme electrical environments, the LQHDR 150kV/0.5kΩ/4.9A damping resistor delivers 12kW of robust transient suppression. Featuring nickel-cadmium enameled wire construction and massive heat dissipation capacity, it withstands high-current surges in demanding industrial applications.

Technical Specifications

Robust Performance Features

• High-Current Capacity: 4.9A continuous rating for heavy-duty applications

• Massive Power Handling: 12kW rating with overload protection

• Nickel-Cadmium Construction: Superior thermal conductivity and surge resistance

• Industrial Design: Robust Ø250mm cylindrical form factor

• High-Temp Operation: Class H insulation (180°C rating)

Industrial Applications

Power Generation

Damps switching transients in 150kV+ generator circuit breakers and excitation systems.

Industrial Rectifiers

Stabilizes high-current DC power supplies for electrolysis and smelting operations.

High-Power Test Systems

Current limiting for 150kV hipot testers and dielectric withstand equipment.

Energy Storage

Controls discharge transients in large capacitor banks and battery systems.

Cooling & Installation Requirements

Thermal Management

Mandatory forced-air cooling with:

• Minimum airflow: 500 CFM

• Air temperature: ≤35°C intake

• Direction: Axial flow through resistor core

Mechanical Installation

1. Mount vertically with ±1° tolerance

2. Maintain 800mm clearance to grounded surfaces

3. Use corona shields for terminals

4. Install vibration dampers (≥5mm deflection)

5. Verify creepage distance ≥40mm/kV

Electrical Connections

Compliance & Safety

• Impulse withstand: 350kV (1.2/50μs wave)

• Short-circuit rating: 25kA/1s

• Environmental rating: IP54 (outdoor capable)

• Safety margin: 200% rated voltage for 1 minute

• Arc flash protection: IEEE 1584 Category 4

Maintenance Protocol

Recalibration required every 2000 operating hours.