50kV AC DC Voltage Breakdown Tester DX8388 IEC 60243 ASTM D149 for Solid Insulation Dielectric Strength

DX8388 50kV AC/DC Voltage Breakdown Tester for Solid Insulation Materials

The DX8388 voltage breakdown testing machine measures the dielectric breakdown strength and withstand voltage time of solid insulating materials under power frequency (48–62 Hz) or equivalent DC voltage, in air or in insulating oil medium. It is built for laboratories, material research centres and quality control departments that need repeatable dielectric strength data.

Standards Complied With

• IEC 60243-1 / GB1408.1 – Electrical strength of solid insulating materials, power frequency tests
• IEC 60243-2 / GB1408.2 – Corresponding DC voltage tests
• GB/T1695-2005 – Power frequency breakdown voltage strength and withstand voltage of vulcanised rubber
• GB/T3333, GB12656, ASTM D149

Applicable Materials

Plastic sheet and film, resin, mica, ceramics, silicone rubber, glass, insulating paint, laminates and other solid insulating materials. Both continuous uniform boosting and stepwise boosting modes are available: voltage is applied to the specimen until breakdown, the breakdown voltage is recorded and the breakdown strength is calculated. In rapid-rise mode the voltage is raised to a preset value and held, giving the withstand voltage of the specimen.

Key Features

• AC 0–50 kV and DC 0–50 kV continuously adjustable test voltage with 10 kVA transformer capacity
• Six programmable boosting rates: 50, 100, 200, 500, 1000 and 2000 kV/s (electrical automatic speed regulation)
• Voltage measurement accuracy within ±2%, leakage current selectable from 1–20 mA
• AC and DC test modes with automatic programmable boosting for unattended test sequences
• Oil tank specimen fixture for liquid-medium tests, protecting operators during flashover

Main Technical Parameters

Service

Factory calibration report, English operation manual, one-year warranty and remote technical support are provided with every unit. Custom test voltage levels and specimen fixtures can be engineered on request.