HDVR-1200kV/10mA Ultra-HVDC Protection Resistor

Product Overview

Engineered for extreme voltage applications, the HDVR-1200kV resistor provides essential protection for 1.2MV DC test systems with its precision 80kΩ current-limiting design and 10mA continuous rating, capable of handling 12kW continuous power dissipation.

Technical Specifications

Protection System Architecture

Dual-Resistor Network

• AC Side Protection: 10kΩ charging transformer resistor

• DC Side Protection: 80kΩ main limiting resistor

• Motorized positioning with 0.1mm repeatability

Failure Protection Mechanism

Unprotected System Failure Modes

1. Fault currents exceed 50A during shorts

2. Rectifier stacks (D1-D4) destroyed in <20μs

3. Transformer insulation breakdown

4. System-wide catastrophic damage

HDVR Protection Benefits

1. Peak current limited to <12mA

2. Voltage transients capped at 105%

3. Fault energy contained to single module

4. 95% reduction in component damage

Design Features

• Voltage Grading: 10-stage active grading system

• Thermal Management: Forced SF6 gas cooling

• Mechanical: 4m alumina-epoxy core with pentagon corona shields

• Monitoring: Integrated fiber-optic current sensors

Protection Performance

Installation Requirements

1. Minimum 8m clearance from grounded surfaces

2. Precision vertical alignment (<0.5° deviation)

3. Quarterly resistance verification (±2% tolerance)

4. Pre-commissioning test at 1440kV

5. Continuous partial discharge monitoring

Compliance Standards

• IEC 62271-1 (1200kV+ equipment standards)

• IEEE Std 1845 (Extreme HVDC systems)

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

• ASTM F3060 (Aerospace electrical components)

Typical Applications

• Next-generation HVDC transmission research

• Fusion energy experimental facilities

• Particle accelerator power systems

• National high-voltage test laboratories

• Space plasma research equipment

The HDVR-1200kV/10mA represents the pinnacle of ultra-high voltage protection technology, with its 80kΩ precision resistance and 30μs response time ensuring safety in 1.2MV systems testing capacitive loads up to 15nF. The aerospace-grade construction meets the most demanding research and industrial applications.