Use a multimeter to detect mid-cycle transformers
Turn the multimeter to the R×1 gear, and check the on-off status of each winding one by one according to the pin arrangement of each winding of the mid-cycle transformer, and then judge whether it is normal. B? Test insulation performance
Put the multimeter in the R×10k block, and do the following state tests:
(1) The resistance value between the primary winding and the secondary winding;
(2) The resistance value between the primary winding and the casing;
(3) The resistance value between the secondary winding and the casing.
The above test results are divided into three situations:
(1) The resistance value is infinite: normal;
(2) The resistance value is zero: there is a short-circuit fault;
(3) The resistance value is less than infinity, but greater than zero: there is a leakage fault.
