Variable Frequency Series Resonant High Voltage Test System for AC Withstand

Product Description

The SXBP Variable Frequency Series Resonance Test System is designed for high-voltage AC withstand testing where conventional test methods may require large power capacity.

By combining a variable-frequency power source with a resonant reactor and excitation transformer, the system converts a relatively manageable input power into the high AC test voltage required by the test object.

With a frequency range of 20–300 Hz and configurable output voltage up to 800 kV RMS, SXBP can be adapted to different voltage classes and capacitive loads.

Test Objects

Power Cable

For cable projects, the electrical load changes with cable type and length.

SXBP can be configured according to:

• Cable rated voltage
• Cable length
• Cable capacitance
• Required test voltage
• Test duration

This makes the system suitable for medium- and high-voltage cable AC withstand testing.

Transformer

For transformer applications, the system can provide the required high AC test voltage for insulation withstand testing.

Configuration can be determined from:

• Transformer voltage class
• Required test voltage
• Test object capacitance
• Test duration

GIS

GIS systems often require high-voltage withstand testing after manufacturing, installation or maintenance.

The SXBP series can be configured according to the GIS electrical parameters and required test conditions.

Switchgear & Circuit Breakers

The system can also be used for AC withstand testing of:

• Switchgear
• Circuit breakers
• Busbars
• High-voltage assemblies

CT, PT & Insulation Components

The system can also support AC withstand testing of:

• Current transformers
• Potential transformers
• Voltage transformers
• Insulators
• Other high-voltage insulation components

Technical Specifications

FAQ

1. What is a series resonance test system?
   It is a high-voltage AC testing system that uses the resonance between inductive and capacitive components to generate the required test voltage for insulation and withstand testing.
2. What makes the SXBP system variable-frequency?
   The system can adjust its operating frequency from 20 to 300 Hz. This allows the resonance condition to be matched to different test loads.
3. What is the maximum output voltage?
   The SXBP series can be configured for up to 800 kV RMS, depending on the system design.
4. What types of equipment can be tested?

         Typical applications include power cables, transformers, GIS, switchgear, circuit breakers, CTs, PTs and insulators.