150kV ~ 400kV

LQHDR 150kV/6A Damping Resistor - 0.5kΩ 18kW High-Power Resistor for Industrial Testing

Industrial-grade 150kV/0.5kΩ damping resistor rated for 6A continuous current. Features 18kW power handling, 1-hour full-load operation, ≤100K temperature rise, and robust construction (450mm×1550mm).

US$ 1,836.00
Lead time: 30days

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Product Details

Product Tags

LQHDR Series 150kV/0.5kΩ/6A Heavy-Duty Damping Resistor

Engineered for extreme industrial applications requiring maximum current handling and robust thermal performance in high-voltage testing environments.

Technical Specifications

Parameter	Specification
Rated Voltage	150kV AC (50/60Hz)
Nominal Resistance	0.5kΩ (500Ω) ±1%
Rated Current	6A continuous
Power Rating	18kW continuous
Max Temperature Rise	≤100K after 1-hour operation
Full-Load Operation	60 minutes continuous at 150kV/6A
Dielectric Strength	180kV/1min (IEC 60243)
Impulse Withstand	350kV (1.2/50μs wave)
Dimensions	Ø450mm × 1550mm
Weight	95kg
Terminals	Dual 50mm copper flanges

Key Performance Features

Extreme Current Capacity: 6A continuous rating at 150kV
Robust Thermal Design: Maintains ≤100K temperature rise during full-power operation
Fail-Safe Insulation: Core insulation remains undamaged during breakdown events
High Power Density: 18kW capability in compact cylindrical form
Low Inductance Design: <10μH for accurate pulse response
Heavy-Duty Construction: 10mm steel casing with ceramic insulators

Mechanical Design

Robust Construction

Cylindrical Design: Ø450mm × 1550mm optimized for heat dissipation
Cooling System: Integrated vertical cooling fins + optional forced-air ports
Terminal Configuration: Opposed flange terminals for easy busbar connection
Mounting System: Heavy-duty base plate with M20 anchor points

Safety Features

Triple-layer insulation system (ceramic-polymer-ceramic)
Automatic pressure relief vents
Integrated ground lugs on both ends
IP66 environmental protection

Industrial Applications

Power Infrastructure Testing

Substation circuit breaker testing
Generator short-circuit withstand verification
High-capacity transformer testing

Industrial Manufacturing

High-power cable production testing
Switchgear factory acceptance tests
Industrial furnace power systems

Research & Development

Plasma arc experiments
Pulsed power systems
High-energy physics applications

Thermal Performance

Load Condition	Duration	Temperature Rise	Cooling Method
100% (150kV/6A)	60 minutes	≤100K	Natural convection
100% (150kV/6A)	120 minutes	≤80K	Forced air (3m/s)
75% (112.5kV/4.5A)	Continuous	≤65K	Natural convection

Note: Surface temperature stabilizes within 15 minutes of operation start.

Installation Requirements

Mount vertically on reinforced concrete base
Minimum clearance: 1.5m radial, 2m vertical
Use copper busbars (min. 100mm × 10mm cross-section)
Ground connection: Dual 35mm² copper cables (resistance <0.05Ω)
Ambient temperature: ≤40°C for full-power operation
Install safety barrier at 3m perimeter during operation

Compliant with IEC 61936 power installation standards.

Cooling Options

Standard Configuration

Natural convection cooling
60-min full-power operation
Cooldown period: 3 hours

Forced-Air Kit (FA-150)

2× industrial blowers (400V AC)
Extends operation to 120 min at full load
Airflow: 2000 CFM total

Water-Cooled Jacket (WCJ-450)

Continuous full-power operation
Stainless steel cooling jacket
Water flow: 20L/min at 2bar

Safety & Maintenance

Operational Safety

Requires Class IV HV safety training
Two-person operation mandatory above 100kV
Automatic discharge circuit with visual indicator
Thermal overload cutoff at 150°C

Maintenance Protocol

Daily: Visual inspection for surface damage
Weekly: Terminal torque check (120Nm)
Monthly: IR test (10kV DC, min. 1GΩ)
Quarterly: Cooling fin cleaning
Annual: Full dielectric strength verification
5-Year: Complete refurbishment recommended