Technical Specifications

• Rated Voltage: 300kV AC (50/60Hz)

• Nominal Resistance: 2.5kΩ ±1.5%

• Rated Current: 4A continuous

• Power Rating: 40kW continuous (300kV × 4A)

• Partial Discharge (PD):

• <5pC at 300kV (100% rated voltage)

• <3pC at 240kV (80% rated voltage)

• Operating Duration: 60 minutes at 300kV/4A continuous load

• Temperature Rise: <80K on resistor surface at full load

• Weight: <300kg

• Cooling System: Integrated liquid cooling manifold

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

Engineering Breakthroughs

• Ultra-Low PD at High Power: Industry-first &lt 5pC at 40kW

• Advanced Thermal Management: Direct-contact liquid cooling maintains &lt 80K rise

• Precision Stability: ±1.5% resistance tolerance under full load

• High di/dt Capability: 200A/µs transient response

• Compact Power Density: Highest kW/kg ratio in class (133W/kg)

Innovation Spotlight: Proprietary multi-layer dielectric shielding enables unprecedented PD performance at high power levels, making this resistor ideal for sensitive measurement environments.

Application Matrix

Liquid Cooling System Specifications

Mandatory cooling configuration for full-power operation:

• Coolant: Deionized water or dielectric fluid

• Flow Rate: 60 liters/minute minimum

• Inlet Temperature: Max 30°C

• Pressure: 4 bar operating pressure

• Monitoring: Dual PT100 sensors, flow meters

• Safety Interlock: Automatic shutdown at 70°C outlet temp

Efficiency Note: The integrated cooling system achieves 2x better heat transfer than conventional designs, enabling the remarkable  &lt 80K temperature rise at full 40kW load.

Installation Requirements

• Mounting: Vertical orientation on vibration-isolated base

• Clearances:

• 3.5m phase-to-phase minimum

• 4.0m to grounded structures

• Terminations: Water-cooled copper terminals (DN40 flanges)

• HV Connections: 400kV-rated silicone cables minimum

• Environmental: IP55 rated enclosure

Safety & Protection Systems

• Triple-redundant temperature protection (Class B)

• Short-circuit withstand: 50kA/100ms

• Dielectric strength: 350kV AC for 1 minute

• Flashover protection: Creepage distance >30mm/kV

• Pressure-relief valves for cooling system

Operational Protocol

1. Pre-cooling: Start cooling system 15 minutes before energization

2. Ramp-up: Increase voltage at ≤5kV/s rate

3. Continuous Monitoring: Outlet temperature (max 65°C), flow rate, pressure

4. Cooldown: Maintain coolant flow for 20 minutes post-operation

5. Discharge: Use automatic grounding system before access

Maintenance Schedule

Compliance & Certifications

• IEC 61010-1:2010 CAT IV 300V

• IEC 60060-1:2010 High-voltage testing

• IEEE C57.152-2013 Partial discharge measurement

• ASME B31.3 Process piping standards

• CE, UKCA, UL, and RoHS certified

Technical Advantages Over Competitors

• 40% higher power density than conventional designs

• 5x lower partial discharge at comparable ratings

• Integrated cooling reduces installation footprint by 60%

• 50% longer continuous operating time at full load

• Automated monitoring interfaces (Modbus RTU, Ethernet/IP)