Variable Frequency High Voltage Test System , On Site AC Withstand Hipot Test

The SXBP variable frequency series resonance test system is professional high-voltage testing equipment, specially developed for handover acceptance tests and preventive insulation tests of large-capacity & high-voltage power electrical equipment. It adopts the principle of series resonance, reduces the test power supply capacity required for high-voltage withstand tests through resonance compensation, greatly lowering the volume, weight and on-site test difficulty of the whole set of equipment, and is widely used in power stations, power supply bureaus, electrical manufacturing enterprises, construction engineering units and third-party testing institutions.

1. AC withstand voltage test for high-voltage power cables of 10kV~500kV.
2. Withstand voltage detection for GIS, gas-insulated switchgear, high-voltage busbars.
3. AC insulation withstand test for large power transformers, high-voltage motors.
4. Preventive test & handover test for high-voltage arresters, voltage/current transformers and other high-voltage apparatus.
5. On-site high-voltage withstand test for newly-built, overhauled power transmission and transformation projects.

• Lightweight modular components, with moving casters at the bottom of each unit, convenient for field handling, transportation and layout.
• Stable output waveform, good waveform distortion, which meets the national standard requirements for power frequency withstand voltage test waveform.
• Strong anti-interference ability, stable operation under complex on-site electromagnetic environment of substation site.
• Humanized operation interface, simple operation logic, low learning cost for testing personnel.

• Q1:What is a Variable Frequency Series Resonance Test System?

  A:A Variable Frequency Series Resonance Test System is a specialized high-voltage testing system that utilizes resonance technology to generate high-voltage AC test power with reduced input capacity. By matching the inductive reactance of the reactor with the capacitive characteristics of the test object, the system provides a stable and efficient voltage output for insulation withstand tests of large power equipment, such as transformers, GIS, high-voltage cables and switchgear.

• Q2:What capacity range does the Variable Frequency Series Resonance Test System cover?

  A:The SXBP Variable Frequency Series Resonance Test System supports a rated capacity range from 300kVA to 20000kVA, allowing flexible application for different voltage levels and test objects. The system configuration can be optimized by selecting suitable reactors, excitation transformers and control units according to the capacitance, voltage rating and testing conditions of the equipment under test.

• Q3:Why does the system use variable frequency resonance technology?

  A:The system adopts adjustable frequency control from 20Hz to 300Hz to achieve accurate resonance matching with different capacitive loads. This technology improves high-voltage output efficiency, reduces the required power supply capacity and ensures stable voltage performance during long-duration AC withstand tests.

• Q4:What types of equipment can be tested by this resonance system?

  A:The system is designed for testing various high-voltage and large-capacitance electrical equipment, including power transformers, GIS, HV cables, circuit breakers, bushings and other insulation systems. It is widely used for factory testing, commissioning tests, preventive maintenance and acceptance testing in substations, power plants and transmission projects.

• Q5:Can the Variable Frequency Series Resonance Test System be customized for different projects?

  A:Yes. The SXBP system can be customized based on specific project requirements, including test voltage level, output capacity, reactor configuration, installation method and test object characteristics. This flexible design enables the system to meet different applications, from portable field testing to high-voltage laboratory test platforms.