HDVR-1000kV/20mA Ultra-HVDC Protection Resistor

Product Overview

Engineered for the most demanding ultra-high voltage applications, the HDVR-1000kV resistor provides essential protection for 1MV DC test systems with its precision 100kΩ current-limiting design and 20mA continuous rating.

Technical Specifications

Protection System Architecture

Dual-Resistor Network

• AC Side: 10kΩ charging transformer protection

• DC Side: 100kΩ main limiting resistor

• Position-adjustable with aviation-grade locking

Failure Protection Mechanism

Unprotected System Failure Modes

1. Fault currents exceed 50A during shorts

2. Rectifier stacks (D1-D4) destroyed in <100μs

3. Transformer insulation breakdown

4. Cascading system damage

HDVR Protection Benefits

1. Peak current limited to <25mA

2. Voltage transients capped at 106%

3. Fault energy contained to single module

4. System components remain protected

Design Features

• Voltage Grading: 9-stage capacitive grading system

• Thermal Management: Forced nitrogen cooling option

• Mechanical: 3.5m alumina-epoxy core with triple corona shields

• Monitoring: Precision voltage divider (0.1% accuracy)

Protection Performance

Installation Requirements

1. Minimum 7m clearance from grounded surfaces

2. Vertical mounting mandatory (max 2° deviation)

3. Bi-annual resistance verification (±3% tolerance)

4. Pre-commissioning test at 1200kV

5. Partial discharge scan at 650kV AC

Compliance Standards

• IEC 62271-1 (1000kV+ equipment standards)

• IEEE Std 1313.2 (Extreme voltage design)

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

• MIL-R-39005 (Military resistor standards)

Typical Applications

• Ultra-HVDC transmission research

• Particle accelerator power systems

• Fusion reactor test facilities

• National grid testing laboratories

• High-energy physics experiments

The HDVR-1000kV/20mA sets the benchmark for ultra-high voltage protection, with its 100kΩ precision resistance and 50μs response time ensuring safety in 1MV systems testing capacitive loads up to 10nF. The military-grade construction guarantees reliability in critical research applications.