High Voltage AC Dielectric Test System Power Frequency AC Hipot Dielectric Withstand Tester for Insulation Test of Electrical Equipment, Laboratory and Field Use

YDJ Power Frequency Withstand Voltage Test Set is a flexible high-voltage hipot testing solution for verifying the insulation strength of electrical equipment and materials. It combines an SXTC control console with a YD series high-voltage test transformer and supports both AC and DC withstand voltage testing.​
With a compact, modular design and reliable protection functions, the system is suitable for factory testing, laboratory evaluation, commissioning, and field maintenance of transformers, switchgear, cables, and other high-voltage equipment.

• Multiple Configurations — Wide model range with flexible combinations for different voltage and testing requirements.​
• Stable Performance — Proven design delivers dependable operation and consistent test results.​
• AC/DC Hipot Testing — One system supports both AC and DC withstand voltage tests.​
• High-Voltage Expansion — Operates as a standalone unit or connects in series for higher voltage output.​
• Automatic Test Control — Auto models support voltage boosting, timing, data logging, and report generation.​
• Enhanced Safety — Integrated over-current, over-voltage, zero-position interlock, and emergency stop protection.​

• Power Plants – Insulation and withstand testing of transformers, switchgear and HV equipment.
• Substations – Field testing of CT/PT, cables, bushings, arresters and other components.
• Railway Systems – HV insulation testing for traction power equipment and cables.
• Mining & Industrial Sites – Routine and preventive testing of high-voltage electrical systems.
• Electrical Manufacturers – Factory testing and quality control of HV components before delivery.
• Testing Laboratories – Flexible testing solution for various electrical equipment and customer projects.
• Commissioning & Maintenance – On-site acceptance, maintenance and insulation verification.

1. What is a power frequency withstand voltage test set?

   A power frequency withstand voltage test set is a high-voltage testing system designed to assess whether the insulation of electrical equipment and insulating materials can safely withstand specified AC voltage levels.​
   The YDJ series combines a control box or operating console with a high-voltage test transformer, forming a flexible solution for routine AC withstand voltage testing. Depending on the selected configuration, the system can also support AC/DC high-voltage tests for a wide range of applications, including transformers, switchgear, cables, insulators, and other high-voltage components.

2. Can the operating console be customized?

   Yes. The SXTC series operating box/control console can be configured according to the customer's operating requirements.​
   Available options can include:​
   • Pointer display​
   • Digital display​
   • Electric operating console​
   • Intelligent control console​
   • Computer-based control​
   • Automatic voltage regulation​
   • Automatic timing​
   • Printing function​
   • USB interface​
   • Customized control functions​
   The appropriate configuration can be selected according to the required level of automation.