Product Details

Transformer Power Frequency (AC) Withstand Voltage Test Device

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The power frequency withstand voltage test device is a power frequency withstand voltage test equipment designed according to the latest national electric power industry standards. It is a strict, effective, and direct method for identifying the insulation strength of electrical equipment. It can detect those concentrated defects that are more dangerous, and plays a decisive role in judging whether electrical equipment can continue to participate in operation. It is an important means to ensure the insulation level of equipment and avoid insulation accidents. It is used to conduct insulation strength tests at specified voltages on various electrical products, electrical components, insulating materials, etc., to assess the insulation level of products, discover insulation defects of the tested object, and measure the ability to withstand overvoltage. It is widely used in electrical manufacturing departments, power operation departments, scientific research institutions, and colleges and universities.



Instrument features:

• Can be configured with oil-immersed, dry-type, or SF6 gas-type test transformers according to user requirements.


• Pointer and digital display, more intuitive and accurate reading, strong anti-interference ability, high cost performance.


• Three measurement methods: high voltage, low voltage current, and time.


• Manual operation mode improves product safety and reliability.


• Real-time display of high voltage and low voltage current, intuitive and clear.


• Has functions such as zero position indication, power indication, working indication, and timing indication.


• Perfect overcurrent protection, zero position start protection, audible and visual language alarm reminder, power protection switch, and other functions.


• Adopts a new type of time relay, with a wider timing range (1S to 99H).


• Adopts a new type of current relay, more accurate and reliable, ensuring personal and equipment safety.


• For test capacity above 5kVA, electromagnetic overcurrent relay is adopted.


• For test capacity above 5kVA, a mobile control console is adopted.


• Add rectifier device to support AC/DC dual-use function. (Optional)


• Equipped with cascade transformer and dual high-voltage transformer to achieve withstand voltage tests at different voltage levels. (Optional)


• Can also customize voltage fine-tuning function for precise adjustment of voltage and current rise in transformer calibration systems. (Optional)

Main technical parameters:

• Input voltage: AC 220(380)V optional


• Low voltage output: AC 0-250(430)V


• Low voltage current: 0-5/10/15/50A (can be customized according to customer requirements)


• Output capacity: 0-3/5/10/15 kVA (can be customized according to customer requirements)


• High voltage: 0-50/100/150/200 kV (can be customized according to customer requirements)


• High voltage current: 0-50/100/150/200/500/1000/2000mA (can be customized according to customer requirements)


• Timing range: 0-9999S


• Ambient temperature: -20℃ to 50℃


• Voltage accuracy ≤1.5% ±1 digit (F.S)


• Current accuracy ≤1.5% ±1 digit (F.S)

Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.