Hi,
I am aware that it is usually preferable to have the relay on the primary side of power transformer.
I have recently come across something like this:
http://www.farnell.com/datasheets/2244198.pdf
Would something like this be advisable for switching on the secondary side (520VAC) of power transformer? Be it in terms of safety, reliability, electronic noise or other aspects of concern?
I am aware that it is usually preferable to have the relay on the primary side of power transformer.
I have recently come across something like this:
http://www.farnell.com/datasheets/2244198.pdf
Would something like this be advisable for switching on the secondary side (520VAC) of power transformer? Be it in terms of safety, reliability, electronic noise or other aspects of concern?
Yeah that would work but 520 is too close to the 600 rating of the part. There are some higher voltage pcb mount parts but the current rating really drops.
they will immediately blow. the peak voltage across would be 510V * 2*sqrt2= 1442V
DS also says 100 and 200V ac, so it wouldn't even switch 220-240V (674Vpp) mains reliably.
DS also says 100 and 200V ac, so it wouldn't even switch 220-240V (674Vpp) mains reliably.
No, nowhere near close. That's 600V peak, not rms. They tell you it's a 200V part. As bansuri said.
This statement is clear for what they were designed . 520V peak is ~730V well beyond 600V . Of course there are transients from inductive loads so for 230V mains 600V peak would be safe with usual protections .
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