NEWS

A Set the multimeter to R × First gear, check the on-off condition of each winding one by one according to the pin arrangement rule of each winding of the mid cycle transformer, and then judge whether it is normal.
B Check the insulation performance and set the multimeter to R × 10k gear, perform the following status tests:
(1) Resistance value between primary winding and secondary winding;
(2) Resistance between primary winding and shell;
(3) The resistance between the secondary winding and the housing.
The above test results fall into three categories:
(1) Resistance value is infinite: normal;
(2) Resistance value is zero: there is short circuit fault;
(3) Resistance value is less than infinity, but greater than zero: there is leakage fault.

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