Technical Specifications

• Rated Voltage: 300kV AC (50/60Hz)

• Nominal Resistance: 2.5kΩ ±2%

• Rated Current: 2A continuous

• Power Rating: 10kW continuous (300kV × 2A)

• Partial Discharge (PD): <150pC at 100% UH (complete test system)

• Operating Duration: 60 minutes at 300kV/2A continuous load

• Temperature Rise: <100K on resistor surface at full load

• Cooling Requirement: Forced-air cooling mandatory

• Standards Compliance: IEC 60270:2015, IEC 60060-1:2010

Key Performance Features

• High-Power Capability: 10kW continuous rating for industrial applications

• Robust Thermal Design: Optimized heat dissipation maintains &lt 100K temperature rise

• Stable Performance: ±2% resistance tolerance under full load

• High di/dt Handling: Withstands rapid current transients up to 100A/µs

• Industrial Durability: Stainless steel core with ceramic-coated elements

Application Matrix

Cooling System Requirements

Mandatory configuration for full-power operation:

• Airflow: 500 CFM minimum (axial or centrifugal)

• Ducting: 350mm diameter with smooth interior

• Temperature Monitoring: Dual PT100 sensors integrated

• Safety Interlock: Automatic shutdown at 130°C core temperature

• Coolant Option: Water-cooled terminals available

Thermal Innovation: Features proprietary segmented-core design with interleaved cooling channels that increase heat transfer efficiency by 40% compared to conventional high-power resistors.

Installation Specifications

• Mounting Orientation: Horizontal preferred (vertical acceptable)

• Clearances:

• 3.0m phase-to-phase minimum

• 3.5m to grounded structures

• Terminations: Dual M35 flanged connections

• Environmental Rating: IP54 (indoor use)

• Altitude Derating: 0.8% per 100m above 1000m ASL

Safety & Protection Systems

• Integrated over-temperature protection (Class B)

• Short-circuit withstand: 40kA/100ms

• Dielectric strength: 350kV AC for 1 minute

• Flashover protection: Creepage distance >25mm/kV

• Fire safety: UL94 V-0 rated materials

Operational Protocol

1. Pre-cooling: Start cooling system 10 minutes before energization

2. Ramp-up: Increase voltage at ≤10kV/s rate

3. Continuous Monitoring: Core temperature (max 120°C), airflow velocity

4. Cooldown: Maintain airflow for 15 minutes post-operation

5. Discharge: Use grounded discharge rod before handling

Maintenance Schedule

Compliance & Certifications

• IEC 61010-1:2010 CAT IV 300V

• IEC 60060-1:2010 High-voltage testing

• IEEE C57.98-2011 Impulse testing

• EN 50191:2010 Erection and operation of test facilities

• CE, UKCA, and EAC certified