1, X1 and X2 capacitors play the same role.
The role of these two capacitors is actually the same, are used to suppress power supply electromagnetic interference, generally installed to the power supply between the fire line and zero line, and play a role in the differential mode filtering, so in terms of role, X1 and X2 capacitors are not very different.
2, the difference between the two is the high and low voltage withstand value.
It can be understood that X1 capacitor has higher withstand voltage, and X1 capacitor should be used in some higher voltage circuits, X1 >2.5kV ≤4.0kV; X2 ≤2.5kV, it can be seen that the withstand value of X1 capacitor is obviously higher than X2 capacitor.
3、What are the common safety capacitors?
Generally, there are two kinds of safety capacitors, one is X safety capacitor (X1/X2/X3 safety capacitor) and the other is Y capacitor (the most common is Y1 and Y2 safety capacitor). The X capacitor is used in power filtering to play a role in power filtering and filtering of differential mode interference. The capacitor connected in parallel between the fire and zero wires and ground is generally called the Y capacitor. As the location of this capacitor connection is also more critical, the same need to comply with safety standards. Therefore, the Y capacitor is also one of the safety capacitors.
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