Y capacitors are generally added between the primary and secondary sides, or the primary side to ground, and the secondary side to ground. y capacitors are not isolated to be used, as long as the device can play its role, there is no limitation to use. There is no such thing as isolation or non-isolation, and finding a way to connect the circuit in an isolated way is usually a matter of adding an isolation transformer, and then there is a foothold for Y capacitors between the initial stages.
At the same time, it should be noted that the purchase of safety Y capacitors should choose the safety capacitors produced by regular manufacturers.
Enkura kondensators

Enkura kondensators

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