>400kV Range
LQHDR 1000kV/5kΩ/0.3A Precision Damping Resistor
Electrical Specifications
Parameter | Specification | Standard |
---|---|---|
Rated Voltage | 1000kV AC | IEC 60273 |
Nominal Resistance | 5kΩ ±0.25% | IEEE 4-2013 |
Rated Current | 0.3A continuous | IEC 60076 |
Power Rating | 0.45kW | Thermal Class A |
Frequency | 50Hz | IEC 60060-1 |
Partial Discharge Performance
≤3pC at 50% rated voltage (500kV)
Tested per IEC 60270 with EMI-shielded chamber
Ultra-low noise design for precision measurement circuits
Exceptional PD characteristics enable accurate readings in sensitive high-voltage instrumentation.
Thermal Stability & Operation
Continuous Operation: 60 minutes at:
100% rated voltage (1000kV)
100% rated current (0.3A)
Full power dissipation (0.45kW)
Temperature Rise: ≤100K after 60 minutes continuous operation
Precision Engineering Features
Resistance Stability: ±0.05% deviation during thermal transients
Low TCR: 5ppm/°C temperature coefficient
Voltage Coefficient:
<0.001%>Construction: Vacuum-encapsulated wire-wound element
Precision Measurement Applications
Reference dividers for HV calibrators
Partial discharge measurement systems
High-voltage probe validation
Dielectric loss angle measurement
Research laboratory instrumentation
Thermal Management System
Cooling Method: Natural convection with optimized surface geometry
Thermal Monitoring: Embedded PT100 sensors
Material System: Aluminum nitride ceramic substrate
Safety Margin: Maintains structural integrity at 150K rise
Operational Protocols
Pre-operation resistance verification (±0.1% tolerance)
Ambient temperature stabilization (23°C ±2°C)
Post-operation cooldown period: 90 minutes minimum
Annual traceable calibration to NIST standards
Compliance & Certification
IEC 60273: High-voltage resistors
IEEE 4-2013: HV testing standards
EN 61326-1: EMC requirements for measurement equipment
ISO/IEC 17025: Calibration laboratory requirements