The rated voltage of the common mode filter is 250VAC. Can it be used in DC circuits?

Simonbinbin

The rated voltage of the common mode filter is 250VAC. Can it be used in DC circuits? [Copy link]

The rated voltage of the common mode filter is 250VAC. Can it be used in DC circuits?

LiHuiyang

maychang

The "250VAC" marked here is only the AC voltage that the manufacturer guarantees that the two windings of the common-mode inductor and between the winding and the casing can withstand. The actual withstand voltage between the two windings and between the winding and the casing is greater than this value.

maychang

"Can it be used in DC circuits?" As long as the DC voltage between the two windings and the DC voltage between the winding and the casing does not exceed the peak value of AC 250V (350V).

Simonbinbin

OK, thanks

chunyang

From the perspective of safety, as long as your DC voltage does not exceed the peak value of the AC voltage, there will be no safety issues when using it. But whether it can be used or not is a parameter issue, so it is hard to say. In principle, the common mode filter used for low voltage DC is completely different from that used for AC power grid, and should not be used, because in addition to the parameters, there are also issues of volume and price, unless the DC you are talking about is similar to the voltage of the power grid.

ninihonghong

It depends on the situation.