Zahnrad Kopf
Diamond
- Joined
- Apr 5, 2010
- Location
- Tropic of Milwaukee
15 year old shop built RPC, made with plug'n'play box** from one of the eBay sellers back then. ( ** - Buy box, connect motor here, here, and here, connect machines, start, enjoy. ) Has run well, run everything thrown at it during the last 15 years.
Until two days ago.
The most sensitive machine started throwing voltage/current errors yesterday. After some thought, I decided to check the transformer voltages. Sure as sunshine the wild leg was fairly high. ( from ground, 115V, 115, 208 ) ( same kind of behavior leg to leg ) This happens from time to time over the years due to Elec Co variances and always returns to normal within hours.
Now it's been two days.
Thinking it's a small issue with the PoCo, I altered the transformer taps to accommodate as I have in the past when I needed to deal with it right now. Worked great for a short period, and now voltage on wild leg is climbing some more again.
I am starting to think it's a RPC issue... But what would cause the wild leg to climb and climb like this? Obviously, I'm an electrical idiot, so use small words and napkin drawings.
Is this possibly the caps in the box getting old/going South? How do I test for this?
Thanks.
CORRECTIONS -
Leg to Ground - 115 W/Gnd, 209 V/Gnd, 115 U/Gnd
Leg to Leg - 232 W/U, 245 V/W, 232 U/V
Order - W, V, U on Transformer
Until two days ago.
The most sensitive machine started throwing voltage/current errors yesterday. After some thought, I decided to check the transformer voltages. Sure as sunshine the wild leg was fairly high. ( from ground, 115V, 115, 208 ) ( same kind of behavior leg to leg ) This happens from time to time over the years due to Elec Co variances and always returns to normal within hours.
Now it's been two days.
Thinking it's a small issue with the PoCo, I altered the transformer taps to accommodate as I have in the past when I needed to deal with it right now. Worked great for a short period, and now voltage on wild leg is climbing some more again.
I am starting to think it's a RPC issue... But what would cause the wild leg to climb and climb like this? Obviously, I'm an electrical idiot, so use small words and napkin drawings.
Is this possibly the caps in the box getting old/going South? How do I test for this?
Thanks.
CORRECTIONS -
Leg to Ground - 115 W/Gnd, 209 V/Gnd, 115 U/Gnd
Leg to Leg - 232 W/U, 245 V/W, 232 U/V
Order - W, V, U on Transformer