150kV ~ 400kV

LQHDR 250kV/10kΩ/0.5A High-Power Damping Resistor | 2.5kW Industrial Grade

Industrial-grade LQHDR 250kV damping resistor with 10kΩ resistance and 0.5A rating. Features 2.5kW power handling and 60-minute continuous operation for demanding high-voltage applications.

US$ 2,459.00
Lead time: 30 days

Send email to us

>>>WhatsApp Communication<<<

Product Details

Product Tags

LQHDR 250kV/10kΩ/0.5A Damping Resistor: High-Current HV Protection

Heavy-Duty Solution for Power Systems

The LQHDR 250kV/10kΩ damping resistor delivers robust oscillation suppression in high-current power systems. Engineered for 50Hz applications at 0.5A continuous current, this industrial-grade component withstands demanding test conditions in transformer impulse testing, switchgear validation, and grid protection systems. With its 2.5kW power rating and certified 60-minute continuous operation at full load, it ensures reliable performance in critical power utility and industrial applications.

Technical Specifications

Parameter	Specification
Model	LQHDR 250kV/10kΩ/0.5A
Rated Frequency	50Hz
Rated Voltage	250kV
Rated Current	0.5A
Nominal Resistance	10kΩ ±1%
Rated Power	2.5kW
Operating Time	60 minutes continuous at 100% load
Compliance Standards	IEC 60060-1, IEEE 4, IEC 61010-1

Performance Advantages

High-Current Capability

Designed for 0.5A continuous operation - 6x higher current handling than standard HV resistors. Robust construction prevents thermal runaway during extended test cycles.

Precision Waveform Control

10kΩ resistance optimized for critical damping in:

Lightning impulse generators (1.2/50μs waveshape)
Switching surge testing (100/2500μs)
Transformer chopped wave testing

Industrial Durability

Heavy-duty construction featuring:

Corrosion-resistant terminals
Reinforced silicone insulation
UV-stable housing for outdoor applications

Industrial Applications

Industry	Application	Performance Benefit
Power Utilities	Transformer impulse testing	Full IEC 60076-3 compliance
Switchgear Manufacturers	Circuit breaker surge testing	Precise current damping for timing measurements
Cable Systems	HV cable partial discharge testing	Stable reference for PD measurements
Renewable Energy	Wind turbine generator testing	Withstands high transient currents

Installation Specifications

Electrical Requirements

Minimum clearance: 2.2m to ground
HV lead rating: ≥250kV silicone-insulated
Grounding: 25mm² copper minimum

Mechanical Mounting

Orientation: Vertical (HV terminal upward)
Mounting torque: 30Nm terminal nuts
Foundation: M20 anchor bolts (4 points)

Environmental Ratings

Operating temperature: -25°C to +50°C
Humidity: 0-95% non-condensing
IP rating: IP55 (standard)

Technical Comparison

Parameter	Standard 250kV Resistor	LQHDR 250kV/10kΩ/0.5A
Current Rating	0.1-0.2A	0.5A
Power Handling	0.4-0.8kW	2.5kW
Duty Cycle	30 minutes	60 minutes
Impulse Current	2kA peak	10kA peak

Maintenance Protocol

Daily

Visual inspection for contamination
Terminal connection check

Monthly

Insulation resistance test (5kV DC)
Surface cleaning with isopropyl alcohol

Annually

Full resistance calibration (NIST traceable)
Thermal imaging inspection
Grounding system verification

Expected Lifespan: 15,000 operational hours with proper maintenance

Safety Compliance

Meets or exceeds international standards:

IEC 61010-1: Safety requirements for electrical equipment
IEC 60060-1: High-voltage test techniques
IEEE 4: Standard for high-voltage testing
RoHS 3: Hazardous substances compliance