HGDR 270kV/2kΩ/1.5A Gas Insulated Damping Resistor

Designed for high-current energy dissipation in ultra-high-voltage systems, the HGDR 270kV series combines 2kΩ precision resistance with exceptional 1.5A current capacity. This SF6 gas-insulated resistor delivers reliable performance in demanding applications requiring both high voltage endurance and robust current handling.

Technical Specifications

Key Features

1. High-Current Capability

• 1.5A continuous current rating

• 405kW peak power dissipation

• Low-inductance helical winding design

2. Precision Voltage Control

• 2kΩ ±5% tolerance across full range

• Stable performance under pulse loads

• Minimal resistance drift (<300ppm/°C)

3. Robust Construction

• Double-walled stainless steel enclosure

• Copper-tungsten alloy electrodes

• Automatic pressure relief system

Design Highlights

Resistive Element

• Nickel-chrome alloy resistance wire

• Ceramic core with alumina coating

• Precision-wound for uniform current distribution

Cooling System

• SF6 gas convection cooling

• Optimized internal baffle design

• 30°C/minute cooldown rate

Typical Applications

• HVDC converter station testing

• Power transformer impulse testing

• Pulsed power system loads

• High-energy physics experiments

Performance Advantages

1. High Energy Density: 486kJ absorption capacity per cycle

2. Rapid Response: <1μs reaction to pulse transients

3. Safety Built-In: Pressure-activated disconnect switch

4. Maintenance-Free: Sealed for 10+ year service life

Installation Guidelines

Electrical Requirements

• 270kV-rated silicone rubber bushings

• Minimum 1.8m phase-to-ground clearance

• Use equalizing rings for >200kV applications

Operational Protocol

• Maximum 20-minute continuous operation at 1.5A

• 45-minute minimum cooldown between cycles

• Monthly SF6 pressure checks recommended

Compliance Standards

• IEC 60060-1 (High-voltage test techniques)

• IEEE Std 4 (Standard for HV testing)

• ANSI/NETA MTS-2019 (Maintenance testing)