HGDR 200KV/2.5KΩ/1A Gas Insulated Damping Resistor

Specially engineered for high-voltage transient suppression, the HGDR series combines 200kV voltage rating with precision 2.5KΩ resistance in a compact SF6 gas-insulated package. This damping resistor excels in pulse energy absorption applications where low partial discharge and reliable short-term overload capacity are critical.

Technical Specifications

Design Features

1. Robust Energy Handling

• 2.5KW continuous power dissipation

• 20-minute short-circuit withstand capability

• Non-inductive winding design

2. Ultra-Clean Performance

• Industry-leading <5pC partial discharge

• SF6 gas insulation prevents corona

• Precision-matched resistance elements

3. Maintenance-Free Operation

• Sealed gas chamber requires no replenishment

• Corrosion-resistant electrode material

• Tested for 500+ duty cycles

Construction Details

Core Components

• Nickel-chromium alloy resistive elements

• Multi-stage graded ring electrodes

• 316 stainless steel enclosure

Gas System

• 0.4MPa SF6 filling pressure

• Double O-ring seals

• Pressure relief diaphragm

Typical Applications

• Impulse generator wave-shaping networks

• Transformer DC resistance test loads

• High-voltage capacitor discharge circuits

• Surge arrester testing

Performance Advantages

1. Precision Resistance: ±5% tolerance across full voltage range

2. Rapid Heat Dissipation: 20°C/minute cooldown rate

3. Safety Assurance: Automatic pressure monitoring

4. Measurement Compatibility: Minimal interference with test signals

Installation Guidelines

Electrical Connections

• Use 200kV-rated silicone rubber bushings

• Minimum 1.5m clearance to grounded objects

Operational Limits

• Do not exceed 20-minute continuous operation at 1A

• Allow 40-minute cooldown after full-load use