First, connect the wires. In addition to connecting the various lines during the test, the transformer must be grounded to the operating system housing. At the same time, the end of the high voltage winding and measuring winding should be safely grounded.

Secondly, matters needing attention in the process of boosting. When the voltage regulator is at zero, close the switch. At this time, the uniform voltage boost needs to be raised to the rated voltage position. At this time, the pointer of the instrument should be observed. If there is any abnormal phenomenon, the power should be cut off immediately, and the test should be continued after the inspection. During the experiment, the iron core of the transformer must be grounded, because according to its working principle, if it is not grounded, an electric shock accident will occur.