Does the safety capacitor have a capacity limit?

The capacity of safety capacitors is generally larger than ceramic capacitors, especially larger than high-voltage ceramic capacitors. Does the safety capacitor have a capacity limit?

The size of the safety capacitor must be limited by the size. According to GJB151, the capacity of the Y capacitor should not exceed 0.1UF. The reason why the capacity of the safety capacitor is limited is to better control the leakage current flowing through the capacitor under the rated frequency and rated voltage and the influence on the EMC performance of the system to a minimum. Therefore, when manufacturing a safety capacitor, it is necessary to set the capacity of the control safety capacitor.

A safety capacitor is a capacitor that does not cause an electric shock when the capacitor fails, and does not endanger personal safety. It includes X and Y capacitors. The x capacitor is a capacitor that is connected between the two lines (LN) of the power line. Generally, a metal film capacitor is used. The Y capacitor is a capacitor that is connected between the two lines of the power line and the ground (LE, NE), and is generally in pairs. . Based on the limitation of leakage current, the value of Y capacitor should not be too large. Generally, the X capacitor is uF grade, and the Y capacitor is nF grade.