11-30-2019, 12:00 PM
>>>>......they are connected in series across the line, with the mid point connected to the chassis.
Which means they are connected in parallel from the point of view of the chassis. So if from L to N two .01 uF caps present 0.005 uF equivalent then from L and N to Chassis they look like 0.02uF 6V AC source with the equivalent AC current.
This is called "touch current" in LVD safety regulations and should be limited.
0.01uF caps is what I use and it's more than enough.
As for Y2, as Steve also noted, those are the best.
Strictly across L - N X2 is fine but since more often than not caps are placed from L and N to chassis, Y is warranted.
Which means they are connected in parallel from the point of view of the chassis. So if from L to N two .01 uF caps present 0.005 uF equivalent then from L and N to Chassis they look like 0.02uF 6V AC source with the equivalent AC current.
This is called "touch current" in LVD safety regulations and should be limited.
0.01uF caps is what I use and it's more than enough.
As for Y2, as Steve also noted, those are the best.
Strictly across L - N X2 is fine but since more often than not caps are placed from L and N to chassis, Y is warranted.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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