"PEAK WORKING VOLTAGE" with a 220-240VAC nominal Power Supply

[cdewitt]

I'm working through the 60601 insulation tables but what do I use for "PEAK WORKING VOLTAGE" with a 220-240VAC nominal power supply?

Thanks for the help

 

[Stijloor]

A Quick Bump!

Can someone help?

Thank you very much!!

 

[Peter Selvey]

For mains supply, the peak working voltage would be sqrt(2) x maximum Vrms, e.g. for a rating of 220-240Vrms, the value would be 399Vp.

 

[Pads38]

Peter,
Shouldn't that read 339Vp?

(240 x 1.414 = 339.41)

 

[Peter Selvey]

Yep, my dyslexia showing up again (or fast typing without checking )

 

[cdewitt]

Thanks but I leaned the relationship between peak and RMS for a sine wave 40 years ago. They didn?t teach me what IEC60601 meant by ?Peak Working Voltage? though. A friend of mine just explained that what the standard means is the highest voltage in the device such as a 300V backlight inverter output. Nothing to do with line voltage.

Chris DeWitt