Because of my location, middle of Nepal, I have to resort to this forum for answers to a problem.
I have a Chinese made SVC 3000VA (servo voltage controlled auto transformer) and the wires coming off the winding aren't marked in any way (no board or connectors). This auto transformer takes power in the 160v-240v range and outputs 120v and 220v.
There are a group of wires (taps) that come from the 'front' of the coil, one is yellow and one is blue - I assume those must be the corrected 120v and 220v taps. Then there is the uncorrected black wire that runs through the fused switch to the servo mechanism at the top of the coil and makes contact with the coil via a graphite brush. The wire that's confusing me is a red wire that's connected to the winding on the outside edge of the coil (it's physically isolated from the rest of the wires with a piece of paperboard - I don't know if this is neutral/common or hot/line?? or where to connect it?
On the exterior of the case there are two sets of terminals. The first set are for 120v and the second set are for 220v.
If anyone requests I can snap and post a photo to help clarify.
I would appreciate any help from this boards gurus.
Thank you
I have a Chinese made SVC 3000VA (servo voltage controlled auto transformer) and the wires coming off the winding aren't marked in any way (no board or connectors). This auto transformer takes power in the 160v-240v range and outputs 120v and 220v.
There are a group of wires (taps) that come from the 'front' of the coil, one is yellow and one is blue - I assume those must be the corrected 120v and 220v taps. Then there is the uncorrected black wire that runs through the fused switch to the servo mechanism at the top of the coil and makes contact with the coil via a graphite brush. The wire that's confusing me is a red wire that's connected to the winding on the outside edge of the coil (it's physically isolated from the rest of the wires with a piece of paperboard - I don't know if this is neutral/common or hot/line?? or where to connect it?
On the exterior of the case there are two sets of terminals. The first set are for 120v and the second set are for 220v.
If anyone requests I can snap and post a photo to help clarify.
I would appreciate any help from this boards gurus.
Thank you