AC Dielectric Test System AC Hipot Dielectric Withstand Test System for Insulation Testing of Transformers, Cables, Bushings and Switchgear

The YDJ Power Frequency Withstand Voltage Test Set is a high-voltage hipot testing system developed for checking the insulation strength and dielectric performance of high-voltage electrical equipment. It consists of an SXTC control console and a YD series high-voltage test transformer, which can be configured separately or combined according to the application.​

The system supports AC and DC withstand voltage testing and can be used to evaluate the insulation condition of transformers, switchgear, cables, electrical components, and other high-voltage apparatus. With integrated voltage control, measurement, protection, and monitoring functions, it provides a practical solution for routine insulation testing and high-voltage commissioning.

• Wide-Ranging Configurations — Covers multiple voltage and power specifications to accommodate different equipment ratings, test levels, and field application requirements.
• Modular & Customizable Setup — The control unit and high-voltage transformer can be configured flexibly, making it easier to build a test system tailored to specific customer requirements.
• Robust Construction for Reliable Testing — Designed with a proven structure and optimized insulation system to deliver consistent performance during repeated high-voltage tests.
• AC & DC Testing in One Solution — Designed for both AC and DC withstand voltage testing, reducing the need for separate test equipment and improving overall testing flexibility.
• Scalable for High-Voltage Applications — A single transformer can handle standard testing tasks, while multiple units can be connected in series to achieve higher test voltages when required.
• Smart Test Control & Documentation — Automatic versions support controlled voltage rise, automatic test timing, real-time data recording, and test report printing for more standardized testing procedures.
• Layered Safety Protection — Integrates over-current, over-voltage, zero-position interlock, emergency stop, and other protection functions to enhance operational safety throughout the test process.
• Suitable for Laboratory & On-Site Testing — The compact configuration and flexible combination make the system suitable for both fixed laboratory applications and field testing environments.

• Power Plants & Energy Generation Facilities

  Used for routine insulation testing, commissioning and preventive maintenance of generators, power transformers, switchgear, busbars and other high-voltage electrical equipment.

• Substations & Power Distribution Networks

  Suitable for AC/DC withstand voltage testing of power transformers, CT/PT, circuit breakers, arresters, bushings, insulators and power cables before energization or during periodic maintenance.

• Railway & Urban Rail Power Systems

  Applied to the inspection and maintenance of traction power equipment, transformers, switchgear, cables and other high-voltage components to support reliable railway operation.

• Mining, Metallurgy & Industrial Power Systems

  Designed for high-voltage insulation testing of electrical equipment operating in demanding industrial environments, helping identify insulation weaknesses before equipment failure occurs.