HGTS 800kV/800kVA SF6 Gas Insulated Test Transformer

Engineered for ultra-high voltage industrial applications, this 800kVA capacity transformer delivers 1A output current with dual-voltage flexibility and industry-leading ≤3pC partial discharge performance in a maintenance-free SF6 design.

Key Specifications

• Rated Capacity: 800kVA (high-power density)

• Dual Voltage Output: 400kV/1A (serial) or 800kV/1A (parallel)

• Excitation Windings: 2×6kV (66.6A each)

• Partial Discharge: ≤3pC @ 800kV (≤2pC @ 640kV)

• Impedance Voltage: <12% (high efficiency)

Dual-Voltage High-Current Operation

Serial Connection (400kV Mode)

• Output: 400kV/1A

• Ideal for high-current endurance tests

• Lower energy consumption

Parallel Connection (800kV Mode)

• Output: 800kV/1A

• Maximum voltage capability

• For ultra-HV insulation testing

Performance Excellence

Advanced Load Cycling

Standard Test Regimens

• 2.5nF Load: 650kV, 15min on/15min off

• 2nF Load: 275kV, 15min on/15min off

• 3nF Load: 460kV, 15min on/15min off

• Daily Cycles: 48 cycles maximum

Integrated Safety Systems

• 5/5 CT Monitoring: Real-time HV current supervision

• 6kV Surge Arrestors: Protects excitation windings

• Insulation: 20kV/1min (LV) and 5kV/1min (HV) withstand

• Measurement: 1000:1 voltage ratio for precision

Industrial Applications

• Ultra-HV cable factory testing

• GIS (Gas Insulated Switchgear) production

• Power transformer qualification

• Utility-scale equipment validation

• High-power research facilities

Technical Superiority

1. High-Current Capacity: 1A output for demanding loads

2. Dual-Voltage Flexibility: 400kV/800kV operation

3. Precision Measurement: ≤3% waveform deviation

4. Robust Protection: Withstands 880kV overvoltage

5. Industrial Duty Cycle: 48 daily test cycles

Operational Guidelines

• Strictly adhere to 15min on/off cycles

• Monitor SF6 pressure before operation

• Verify CT system before high-voltage tests

• Use proper PPE for 800kV operation