Electrical Specifications

Partial Discharge Performance

• <5pC at 100% rated voltage (1000kV)

• <3pC at 80% rated voltage (800kV)

• Measured per IEC 60270 Class I precision

Ultra-low discharge characteristics ensure measurement integrity in sensitive high-voltage circuits.

Cyclic Operation Capability

Duty Cycle: 15 minutes ON / 15 minutes OFF

Maximum Cycles: 8 per 24-hour period

Optimized for intermittent high-stress test sequences in laboratory environments.

ONAN Cooling System

• Cooling Method: Oil Natural Air Natural (ONAN)

• Oil Capacity: 220L mineral oil (IEC 60296)

• Thermal Capacity: 2.5kW heat dissipation

• Cooling Surface: 8m² corrugated radiator

The passive cooling system ensures zero-maintenance operation with natural convection.

Thermal Performance

• Stabilizes within 15 minutes of operation

• 15-minute cooldown period between cycles

• Oil temperature rise maintained below 55K

Cyclic Duty Applications

• Intermittent transformer impulse testing

• Batch testing in high-voltage laboratories

• Research facility validation cycles

• Quality assurance sampling systems

• Prototype evaluation test sequences

Operational Protocol

1. Pre-cycle insulation test (min 50GΩ at 5kV DC)

2. Maximum 8 cycles per 24-hour period

3. 15-minute minimum cooldown between operations

4. Annual oil dielectric strength verification

Safety & Reliability Features

• Pressure-relief membrane for oil expansion

• Corona-free design up to 1100kV

• Dual moisture sensors in oil compartment

• Grounding terminals with 10mm² minimum requirement

Compliance Standards

• IEC 60273: High-voltage resistors

• IEEE 4-2013: HV testing standards

• EN 60076-14: Liquid-immersed equipment

• IEC 61010-1: Safety requirements