HGDR 1250kV/5kΩ/1A Gas Insulated Damping Resistor

Designed for the most extreme high-voltage environments, the HGDR 1250kV/5kΩ/1A represents the pinnacle of damping resistor technology. With its unprecedented 1250kV rating and 1A current capacity, this SF6 gas-insulated unit delivers <5pC partial discharge performance for precision measurements in UHV research and testing.

Technical Specifications

Groundbreaking Features

1. Record Voltage Rating

• 1250kV continuous operation

• 1375kV (110%) withstand for 60s

• 7-stage electrostatic shielding

2. High-Current Precision

• 1A continuous current with ±3% tolerance

• 5kW power dissipation capacity

• Low-inductance bifilar winding

3. Ultra-Low Noise

• Industry-best <5pC partial discharge

• Double-shielded SF6 containment

• Gold-plated contacts minimize RFI

Cutting-Edge Design

Resistive Element

• Vacuum-arc-melted NiCr70 alloy

• Silicon carbide composite substrate

• Laser-trimmed resistance matching

Gas Management

• 0.65MPa SF6 with molecular sieve

• Quad-seal Inconel housing

• Real-time gas density monitoring

Specialized Applications

• Next-gen UHV transmission research (≥1200kV)

• Fusion reactor power supply testing

• Particle accelerator energy recovery

• National grid extreme condition simulation

Unmatched Advantages

1. Voltage Leadership: Highest commercially available rating

2. Energy Handling: 6MJ absorption capacity per cycle

3. Measurement Integrity: Minimal interference (<5pC)

4. Thermal Performance: <75K rise at 5kW

Installation Protocol

Electrical Requirements

• 1250kV-rated composite insulators

• Minimum 5m clearance to ground

• Faraday cage recommended for PD-sensitive tests

Operational Limits

• 20-minute maximum continuous operation

• 120-minute minimum cooldown period

• Monthly gas purity checks required

Certifications

• IEC 60060-1:2010 (UHV testing)

• IEEE Std 4-2013 (Extreme voltage)

• CIGRE WG D1.67 (UHV equipment)