>400kV Range
LQHDR 1000kV/10kΩ/2A High-Current Damping Resistor
Electrical Specifications
Parameter | Value | Standard |
---|---|---|
Rated Voltage | 1000kV AC | IEC 60273 |
Nominal Resistance | 5kΩ ±0.25% | IEEE 4-2013 |
Rated Current | 2A continuous | IEC 60076 |
Power Rating | 20kW | Thermal Class H |
Frequency | 50Hz | IEC 60060-1 |
Exceptional Thermal Performance
Temperature Rise: <40K at 100% rated current (2A)
Cooling System: Advanced forced-air cooling with variable-speed fans
Thermal Stability: Maintains resistance within ±0.1% during operation
Materials: Aluminum nitride core with copper heat spreaders
The revolutionary thermal design enables continuous 20kW operation with minimal surface temperature increase.
Partial Discharge Characteristics
≤3pC at 100% rated voltage (1000kV)
≤2pC at 80% rated voltage (800kV)
Measured per IEC 60270 Class I precision
High-Current Operation
Continuous Duty: 60 minutes uninterrupted operation at:
1000kV rated voltage
2A rated current
20kW power dissipation
Advanced Cooling Technology
Airflow: 1200 CFM with temperature-controlled fans
Heat Exchanger: Micro-channel aluminum design
Thermal Monitoring: 8-point infrared sensor array
Safety Shutdown: Automatic at 65°C surface temperature
High-Power Applications
UHV transformer testing stations
HVDC converter valve stress testing
High-power laboratory impulse generators
Nuclear research facility power systems
Rail electrification system validation
Robust Safety Features
Dual-stage overcurrent protection
Creepage distance: 25mm/kV (25m total)
Corona-free design up to 1100kV
IP65-rated environmental protection
Ground fault monitoring system
Maintenance Protocols
Monthly airflow verification (min 1000 CFM)
Quarterly thermal imaging analysis
Biannual resistance calibration (±0.1%)
Annual dielectric strength test at 1200kV
Compliance & Certification
IEC 60273: High-voltage resistors
IEEE 4-2013: HV testing standards
EN 60076-16: Thermal performance requirements
IEC 62271: High-voltage switchgear standards