I have various Phoenix Contact Mini DC Power supply units (Pheonix Contact MINI-PS-100-240AC-5DC). It gives the correct DC Voltage across output terminals, as its supposed to. But I also noticed that its also showing an AC Voltage of around 70 - 80 V between the O/P terminals and Ground as well as Neutral.
Is this normal?
I am using this power supply to use in combination with a relay, to serve as a Digital signal (5 VDC) source for monitoring status of certain devices in a system. I am using a National Instruments DAQ+modules and am worried that this AC voltage might damage the DAQ and modules(which are grounded through the DAQ chassis) which are extremely expensive.
Kindly explain if this a fault with my DC Power supply or if its normal.
Thanks in advance.