Three types of wiring for isolation layer of isolation transformer

For interference sources from the power supply, anti-interference measures using isolation transformers and low-pass filters
are very effective. (1) Three types of wiring of isolation transformers. The isolation layer of
    an isolation transformer usually has three ways of connection, as shown in the figure. Among them, the connection method in Figure (a) has a poor effect on power frequency
interference suppression, while the connection method in Figure (c) has the best effect on power frequency interference. Can be selected according to system conditions. When installing,
please note that both input and output lines use twisted pairs, which is good for suppressing common-mode interference.