Flyback transformer isolation voltages

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cupoftea

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Hi,
I am looking at a 240VAC offline isolated flyback transformer spec which says the following......

*****************************
Hi-Pot:
PRI, BIAS to SEC (3kV AC)
PRI, SEC to CORE (500V AC)
PRI to BIAS (500V AC)
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.......If Pri to core, and sec to core, is just 500VAC...then how can Pri to sec, possibly be 3kV AC?
 

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Correct - this may be a sloppy statement by some one who has not done any sort of due diligence,

or a typo that should read 1500VAC to core ...
 
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Hi,

Maybe the one is the true isolation voltage
And the other is the test voltage

Klaus
 
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