10KVA/400V Induced Withstand Voltage Test Device - Yangzhou Darui
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10KVA/400VInduced WithstandVoltage Test Device, for power transformers, voltage transformers and other test objects, in addition to performing external applied power frequency high voltage tests on the main insulation of fully insulated transformers, it is also necessary to conduct induced high voltage tests on the longitudinal insulation of transformers and the main insulation of semi-insulated transformers.
According to national test standards, the induced test voltage for power transformers and voltage transformers is generally considered to be about 2 to 3 times the maximum working phase voltage. As is well known, when a transformer operates at rated frequency and rated voltage, the iron core is close to saturation. If a test voltage higher than the rated voltage is applied across the windings of the transformer under test using a power frequency power source, the no-load excitation current will increase sharply to an unacceptable level. From the relationship of induced electromotive force, it can be seen that in order to apply a test voltage higher than the rated voltage without saturating the iron core, the method of increasing the power frequency (f) can be adopted, and a power generator with a frequency greater than the multiplier must be used.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
