What Is Difference Between Power Frequency Withstand And Impulse Voltage?

       Impulse voltage and power frequency withstand voltage are both test methods and means used to test insulation and protection performance of various high-voltage electrical equipment in high-voltage test. In addition to the name difference between the two, the test method and equipment are also very different.

       Impulse voltage is also known as impulse withstand voltage test. It mainly tests the insulation and protection of high-voltage sub electrical equipment under the impulse voltage such as lightning overvoltage and operation overvoltage. The test voltage is much higher than the voltage that the insulation normally bears. The high voltage generated by impulse voltage is mainly generated by two methods: lightning impulse and operation impulse high voltage.

       Impulse voltage is mainly generated by impulse voltage generator; the first method is to use impulse voltage generator to change its parameter products as well as lightning impulse voltage. This method is mainly used for test objects with high impedance. The other is the combination of impulse voltage generator and transformer, which is the common test transformer in our high voltage test.

       Power frequency withstand voltage is also a means of insulation test for high-voltage electrical equipment. It uses power frequency withstand voltage test equipment to raise the voltage to a certain value and pressurize it to the tested equipment. It is used to test the insulation strength of various electrical products, electrical components, insulation materials and other tested products, assess the insulation level of products, judge the insulation defects of the tested products, and weigh the ability to measure overvoltage.

       In addition to different test standards, power frequency withstand voltage and impulse voltage are also different in equipment. The main high voltage test equipment for power frequency withstand voltage is power frequency withstand voltage test device. It is mainly composed of power frequency withstand voltage test box and test device, with strong anti-interference and high cost performance.

       Impulse voltage is tested by impulse voltage generator on impulse voltage full wave, cut wave and operation impulse voltage wave to check insulation performance. The circuit inductance of the equipment is small, and band resistance filtering measures are taken, which can produce standard shock wave under the load of large electric capacity, and the load capacity is large. The above is the difference between power frequency withstand voltage and impulse voltage.

       GDZX is a manufacturer of power frequency voltage withstand test device. It has many types of power frequency voltage withstand test device, which can meet different test needs of customers. Welcome to call for consultation or visit our company!