HGDR 800kV/2.5kΩ/1A Gas Insulated Damping Resistor

Engineered for the most demanding ultra-high-voltage applications, the HGDR 800kV/2.5kΩ/1A sets new standards with its exceptional 1A current capacity and industry-leading ≤3pC partial discharge performance. This SF6 gas-insulated resistor delivers reliable energy absorption in 800kV test systems, HVDC research, and particle accelerator applications.

Technical Specifications

Breakthrough Performance

1. Extreme Voltage Endurance

• 800kV continuous operation

• 880kV (110%) withstand for 60s

• Multi-stage electrostatic shielding

2. Unmatched Current Handling

• 1A continuous current rating

• 2.5kW power dissipation

• Helical non-inductive winding

3. Ultra-Clean Operation

• ≤3pC partial discharge at 800kV

• SF6 gas eliminates corona effects

• Optimal for sensitive measurements

Engineering Innovations

Resistive Core

• Vacuum-encapsulated NiCr60 alloy

• Aluminum nitride ceramic substrate

• Precision-wound for uniform current density

Gas System

• 0.6MPa SF6 with moisture control

• Triple-seal stainless steel enclosure

• Automatic pressure compensation

Critical Applications

• UHV transmission line testing (800kV+)

• HVDC valve hall commissioning

• Pulsed power system development

• High-energy physics experiments

Competitive Advantages

1. Industry-Leading PD: 50% lower than comparable resistors

2. High Current Density: 1A rating in compact footprint

3. Thermal Stability: <80K temperature rise at full load

4. Safety Assurance: Dual-redundant pressure relief

Installation Requirements

Electrical

• 800kV-rated composite bushings

• Minimum 3.5m phase-to-ground clearance

Operational

• 20-minute maximum continuous operation

• 90-minute minimum cooldown

• Quarterly gas pressure verification

Certifications

• IEC 60060-1 (High-voltage testing)

• IEEE Std 4-2013 (HV techniques)

• CIGRE TB 815 (UHV equipment)