Triple Frequency Test Instrument - Yangzhou Darui
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Triple Frequency Test InstrumentAccording to national test standards, the induced test voltage for power transformers and voltage transformers is generally considered to be 2-3 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 supply, 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 supply frequency can be adopted, and a generator with a frequency greater than the power frequency must be used.
【Operating Environment】
1. Power supply conditions: Three-phase 380V/50Hz
2. Ambient temperature: -25℃ - 55℃
3. Altitude: not exceeding 4000 meters
【Technical Parameters】
1. Working power supply: Three-phase AC 380V ±10% 50Hz
2. Rated capacity: 3KVA-30KVA (optional)
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
