Electrical Specifications

Thermal Performance & Cooling System

• Temperature Rise: <100K after 60-min continuous operation at 100% load

• Cooling Method: ONAN (Oil Natural Air Natural)

• Thermal Stability: Mechanical integrity maintained at peak temperatures

• Breakdown Protection: Non-damaging insulation failure mode

The mineral oil-based cooling system ensures uniform heat distribution even at 1000kV operation.

Continuous Operation Capability

Full-Power Endurance: 60 minutes uninterrupted operation at:

• 1000kV rated voltage

• 1A rated current

• 5kW power dissipation

Safety & Reliability Features

• Fault-Tolerant Insulation: Non-catastrophic failure mode during breakdown

• Thermal Endurance: Structural integrity maintained at operational temperatures

• Pressure Relief: Explosion-proof diaphragm for oil expansion

• Creepage Distance: 30mm/kV (30m total) with silicone composite bushings

Ultra-High Voltage Applications

• UHV transformer impulse testing (IEC 60076)

• 1000kV+ transmission line research facilities

• Nuclear fusion reactor power supplies

• High-energy physics laboratory setups

• Lightning impulse generators (IEC 61083-1)

ONAN Cooling System Details

• Oil Volume: 350L mineral oil (IEC 60296)

• Radiator Surface: 12m² corrugated fins

• Thermal Gradient: <15°C between oil and ambient

• Maintenance: 5-year oil replacement interval

Operational Protocols

1. Pre-test oil dielectric strength verification (min 60kV/2.5mm)

2. Thermal imaging at 30-minute intervals during operation

3. Post-operation cooldown period: 120 minutes minimum

4. Annual dissolved gas analysis (DGA) for oil quality

Compliance & Certification

• IEC 60273: High-voltage resistors

• IEEE 4-2013: HV testing standards

• EN 60076-14: Liquid-immersed transformer standards

• IEC 61010-1: Safety requirements