>400kV Range
LQHDR Series: 700kV/5kΩ High-Voltage Damping Resistor
Precision-engineered for ultra-high-voltage testing applications, the LQHDR damping resistor delivers exceptional stability in critical dielectric and impulse testing scenarios.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 700kV AC/DC |
| Nominal Resistance | 5kΩ ±1% |
| Rated Current | 0.375A |
| Rated Power | 0.637kW at 50Hz |
| Partial Discharge (PD) Level | <5pC at 100% UH (full test voltage) |
| Maximum Operating Duration | 30 minutes at 100% rated voltage/current |
| Temperature Rise | <100K at continuous 100% load |
Key Performance Features
Ultra-Low Partial Discharge
Maintains <5pC PD levels at full 700kV operation, ensuring measurement accuracy during dielectric tests per IEC 60270 standards.
Precision Thermal Management
Optimized heat dissipation design guarantees surface temperature rise remains below 100K under maximum continuous load.
High-Voltage Endurance
Certified 30-minute operational capacity at 100% rated voltage for extended test sequences without performance degradation.
Industrial Applications
Ultra-high-voltage transformer testing
GIS (Gas-Insulated Switchgear) partial discharge detection
HVDC transmission system commissioning
Impulse voltage generator circuits
Research lab dielectric strength validation
Safety & Compliance
Manufactured to meet stringent international standards:
IEC 60060-1: High-voltage test techniques
IEEE 4: Standard for HV testing procedures
EN 62155: Hollow pressurized and unpressurized ceramic and glass insulators
Installation Requirements
Minimum 2.5m clearance from grounded surfaces
Mandatory corona ring installation above 500kV
Ambient temperature range: -25°C to +40°C
Annual dielectric strength verification recommended
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