HGTS 750kV/300kVA SF6 Gas Insulated Test Transformer

Designed for ultra-high voltage precision testing, this 300kVA transformer delivers exceptional accuracy with dual-voltage output and industry-leading ≤5pC partial discharge performance in a compact SF6-insulated package.

Key Specifications

• Rated Capacity: 300kVA

• Dual Voltage Output: 375kV/0.4A (serial) or 750kV/0.4A (parallel)

• Excitation Windings: 2×3kV (50A each)

• Partial Discharge: ≤5pC at 750kV (≤3pC at 600kV)

• Impedance Voltage: ≤12%

Dual-Voltage Precision Operation

Serial Connection (375kV Mode)

• Output: 375kV/0.4A

• Ideal for extended precision testing

• Lower energy consumption

Parallel Connection (750kV Mode)

• Output: 750kV/0.4A

• Maximum voltage capability

• For ultra-high voltage insulation tests

Performance Excellence

Advanced Safety Systems

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

• 3kV Surge Arrestor: Protects excitation windings

• Damping Resistor: Handles 600kV short-circuit discharges

• Insulation: >2000MΩ winding-to-ground resistance

Premium Insulation Performance

• Partial discharge ≤5pC at 750kV

• Dielectric loss

  <0.5%<>

• 10kV/1min HV terminal withstand

• SF6 gas insulation (maintenance-free)

Laboratory Applications

• Ultra-high voltage component testing

• Insulation material research

• Power transformer development

• High-voltage calibration standards

• Advanced electrical research

Technical Advantages

1. Voltage Flexibility: Dual-range 375kV/750kV operation

2. Measurement Precision: ≤3% waveform deviation

3. Safety Assurance: Integrated CT monitoring system

4. Reliable Design: Withstands 825kV overvoltage

5. Low Noise: ≤60dB for laboratory environments

Operational Guidelines

• Adhere to 15-minute operation cycles

• Verify SF6 pressure before testing

• Check CT monitoring system functionality

• Use proper HV safety protocols