cupoftea
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Hi,
Customer sent us offline flybacj which fails EMC.
85-265,24VOUT, 66KHz, 20W
It has no Y caps, just CM choke.
Its in an earthed metal enclosure.
Served by L/N/E there is an earthing screw restring to which we will connect one of the Y caps.
We have only room for 2 Y caps....we can get one across the transformer.
The other one we can connect to primary HVDC or one downstream terminal of the CMC....we cannot connect to the other terminal of the CMC, as no room.
So where would you best connect this Y cap?...from Earth to HVDC, or from Earth to downstream terminal of CM Choke?
If i could connect a y cap to each downstream terminal of the CM Choke, then i would deffo do that, but i cannot as no room......so given that the CM filter will be unbalanced if i connect the 1 Y cap to the CM choke node, then where would you prefer to put the 1 Y cap?
Customer sent us offline flybacj which fails EMC.
85-265,24VOUT, 66KHz, 20W
It has no Y caps, just CM choke.
Its in an earthed metal enclosure.
Served by L/N/E there is an earthing screw restring to which we will connect one of the Y caps.
We have only room for 2 Y caps....we can get one across the transformer.
The other one we can connect to primary HVDC or one downstream terminal of the CMC....we cannot connect to the other terminal of the CMC, as no room.
So where would you best connect this Y cap?...from Earth to HVDC, or from Earth to downstream terminal of CM Choke?
If i could connect a y cap to each downstream terminal of the CM Choke, then i would deffo do that, but i cannot as no room......so given that the CM filter will be unbalanced if i connect the 1 Y cap to the CM choke node, then where would you prefer to put the 1 Y cap?