Leakage Current

A term relating to current flowing between the AC supply wires and earth ground. The term does not necessarily denote a fault condition. In power supplies, leakage current usually refers to the 60 Hertz current which flows through the EMI filter capacitors which are connected between the AC lines and ground (Y caps).

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Leakage Current

Leakage current is the current flowing from the protective earth (PE) conductor, such as metal enclosure, of equipments to frame ground (FG). Due to EMI requirements in S.P.S., there are Y capacitors (C2 and C3 in Figure 2.2) connected in between AC L/N and PE conductor. A low current will flow through the Y-caps to [...]

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