Power Frequency PD-Free AC Withstand Dielectric Test System for Insulation Testing of Transformers Cable High Voltage Electrical Equipment

5kVA/50kV Power Frequency PD-Free AC Withstand Test System

The 5kVA/50kV Power Frequency PD-Free AC Withstand Test System is intended for insulation withstand evaluation in situations where the test source itself must maintain a low partial discharge level. It applies power-frequency AC voltage to the test object and provides a controlled environment for checking insulation performance under specified electrical stress.

The complete setup brings together a Motorized Operation Console, Power Supply, PD-Free Test Transformer, and Voltage Divider. The electric console manages the voltage application, while the specially configured test transformer supplies the high-voltage output with low discharge characteristics. The voltage divider provides the corresponding voltage measurement function, allowing the test circuit to operate as an integrated AC withstand testing solution.

• Low Background Discharge — Helps minimize unwanted discharge originating from the test source.
• Controlled AC Stress Testing — Applies power-frequency voltage to evaluate insulation withstand performance.
• Integrated High-Voltage Circuit — Combines voltage control, power supply, high-voltage generation, and measurement.
• Electric Voltage Adjustment — Provides convenient control during gradual voltage application.
• Dedicated PD-Free Transformer — Supports testing where background discharge level is an important consideration.
• Reliable Measurement Arrangement — The voltage divider provides a dedicated high-voltage measurement path.

• Transformer insulation evaluation
• High-voltage electrical equipment testing
• Insulation system verification
• Electrical testing laboratories
• High-voltage R&D departments
• Power equipment quality assessment

Q1: Why does an AC withstand system need a low-PD configuration?

A: A low-PD test source helps reduce discharge generated by the equipment itself, which is beneficial when evaluating insulation under controlled conditions.

Q2: What is the rated capacity of this system?

A: The standard configuration is rated at 5kVA with an AC test voltage of 50kV.

Q3: How is the test voltage adjusted?

A: Voltage adjustment is performed electrically through the motorized operation console.

Q4: Can the system be designed for another voltage level?

A: Yes. Sansion Power can configure different voltage and capacity ratings according to the test object and required testing conditions.