High Voltage AC Resonant Test System for Power Cable, Transformer, GIS, Switchgear and Other High Voltage Equipment

The SXBP Variable Frequency Series Resonance Test System is engineered for demanding AC high-voltage testing where conventional test methods may become less practical due to the large capacitance of the equipment under test.

Using variable-frequency series resonance technology, SXBP creates a controllable high-voltage AC testing environment for power cables, GIS, transformers, circuit breakers, CTs, VTs, CVTs and other high-voltage equipment.

1. Wide Voltage Coverage
   Configurations are available for applications from 200 kV to 2,000 kV.
2. Broad Capacity Range
   Rated capacity can be configured from 300 kVA to 20,000 kVA.
3. Variable-Frequency Operation
   A 20–300 Hz frequency range provides flexibility when establishing resonance.
4. High-Q System
   The system is designed with a Q factor ≥50.
5. Low Waveform Distortion
   The output waveform distortion is specified at ≤1%.
6. Project-Oriented Configuration
   System components can be selected according to the actual test object and testing conditions.
7. Multiple Testing Applications
   One product family can cover cables, GIS, transformers, switchgear and instrument transformers.

• Power Utilities
  For transmission, distribution and substation testing.
• HV Cable Manufacturers
  For production and acceptance testing of HV/EHV cable systems.
• Transformer Manufacturers
  For high-voltage insulation testing.
• GIS & Switchgear Manufacturers
  For factory testing and insulation verification.
• Testing Laboratories
  For professional high-voltage testing services.
• EPC & Commissioning Contractors
  For on-site testing and project acceptance.

1. What is the SXBP system mainly used for?
   It is primarily designed for AC high-voltage withstand and insulation testing of cables, GIS, transformers, circuit breakers and other HV/EHV equipment.
2. What voltage range is available?
   The rated voltage range covers 200 kV to 2,000 kV, depending on the selected configuration.
3. What is the maximum system capacity?
   The SXBP series covers configurations from 300 kVA up to 20,000 kVA.
4. Why does the system use variable frequency?
   Variable-frequency operation allows the resonant circuit to be adjusted according to the electrical characteristics of the test object, particularly for capacitive loads.
5. Can SXBP be used for long cable testing?
   Yes. The system is particularly applicable to high-voltage cable testing where the cable presents a significant capacitive load.
6. Can the system be customized?
   Yes. The reactor, excitation transformer, variable-frequency power supply and related components can be matched according to the required testing voltage, capacity and load characteristics.