Mutual inductor including voltage transformer and current transformer
Voltage transformer is a voltage conversion device, which has dual functions of voltage conversion and isolation. It transforms high voltage circuit or low voltage loop high voltage to low voltage (generally 100V), and supplies instrument and relay protection to measure, measure, protect and so on.
Current transformer is a current conversion device, which has two functions of current transformation and isolation. It transforms large current of high voltage loop or low voltage circuit into low voltage and small current (generally 5A), and supplies instruments and relay protection to measure, measure, protect and so on.
In actual measurement, in order to match the instrument range better, there is also a transformer which transforms the small current below 5A to a large current (5A). |