UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Warning about high leakage current, and earthing. Farnell AP60/50.

duncanlowe · 19th Jul 2020, 4:45 pm

I hope this is the right section, pretty sure it's getting on for 30 years old and a previous thread https://www.vintage-radio.net/forum/...d.php?t=129864 was in this section.

So my question is about a warning on the back of the PSU, that there is a high leakage current and earthing is vital. I was preparing to run mine from a petrol generator (to quickly charge a car battery where the car has been stood since Feb). Now a standalone genny has no 'real' earth, the earth connection on the socket is connected to generator's frame, but no actual ground to terra firma. My concern is the mentioned leakage is effectivley the class Y caps which I know this PSU has because I replaced the Rifas (as in the linked thread).

So the question is, am I risking a belt (or worse) running an AP60/50 from a standalone generator? So far as I can ascertain, there's no local mains supply I can use, and no sensible way of driving an earth terminal into the actual ground (it's a block paved car parking area).

19th Jul 2020, 4:45 pm	#1
duncanlowe Nonode Join Date: Jan 2016 Location: Stafford, Staffs. UK. Posts: 2,532	Warning about high leakage current, and earthing. Farnell AP60/50. I hope this is the right section, pretty sure it's getting on for 30 years old and a previous thread https://www.vintage-radio.net/forum/...d.php?t=129864 was in this section. So my question is about a warning on the back of the PSU, that there is a high leakage current and earthing is vital. I was preparing to run mine from a petrol generator (to quickly charge a car battery where the car has been stood since Feb). Now a standalone genny has no 'real' earth, the earth connection on the socket is connected to generator's frame, but no actual ground to terra firma. My concern is the mentioned leakage is effectivley the class Y caps which I know this PSU has because I replaced the Rifas (as in the linked thread). So the question is, am I risking a belt (or worse) running an AP60/50 from a standalone generator? So far as I can ascertain, there's no local mains supply I can use, and no sensible way of driving an earth terminal into the actual ground (it's a block paved car parking area).