Variable Frequency Series AC Resonance Withstand Voltage Test System for Substation Equipment and High Voltage Power Apparatus

General Information

The SXBP Series Variable Frequency Series Resonant Test System is an integrated solution for AC withstand voltage testing of high-voltage electrical equipment. Developed for power utilities, electrical equipment manufacturers, testing laboratories and engineering contractors, the system is designed to address different voltage levels and capacitive load requirements through application-specific configuration.​
By combining a variable frequency power supply, excitation transformer, resonant reactors and a control and measurement unit, the SXBP Series provides a coordinated solution for generating high AC test voltages under suitable resonant conditions.

• Variable Frequency Power Supply: Provides adjustable-frequency excitation for establishing the resonant operating condition.​
• Excitation Transformer: Supplies the excitation voltage required by the resonant circuit.​
• Resonant Reactor: Provides the inductive element needed to establish series resonance with the test object.​
• Control and Measurement Unit: Supports operating parameter adjustment and relevant electrical measurements.​

1. Variable-Frequency Series Resonance
   The system adjusts its operating frequency to establish resonance between the inductive reactance of the resonant reactor and the capacitive reactance of the test object. The available frequency range depends on the selected model.​
2. Modular Equipment Configuration
   The variable frequency power supply, excitation transformer and resonant reactors form the main functional components. Their ratings and arrangement can be selected according to the required test voltage and capacitive load.​
3. Application-Specific System Selection
   System selection takes into account test voltage, test-object capacitance, required operating frequency, test duration and site conditions. This helps align the equipment configuration with the actual testing task.​
4. Integrated Control and Measurement
   The control and measurement unit supports system operation and monitoring of relevant test parameters. Specific control, measurement and protection functions depend on the supplied configuration.​
5. Adaptable to Different Testing Environments
   The modular arrangement can support laboratory and field-testing applications when the selected system is appropriate for the site power supply, installation conditions, transportation requirements and safety arrangements.

Configured for applicable AC withstand voltage tests on medium- and high-voltage power cables. Cable length, capacitance, rated voltage and test duration are important selection parameters.​

Suitable configurations can be evaluated for AC insulation testing of GIS and related high-voltage assemblies according to the specified test procedure.​

The system can be considered for compatible AC withstand voltage testing applications involving transformers and related electrical equipment.​