Richie C. posted:CAPPilot posted:If this helps, here is one way to wire the PSXs in. Looks complicated, but really doesn't add much time to add the PSX/Chokes and TVSs.
Would putting another PSX in between the TIU output and the MTH Terminal Block in place of the TVS 1.5KE36Ca provide better protection ?
Richie,
My diagram is TVS overkill. I cut and pasted a couple of other diagrams to get it.
Here is my un-knowledgeable view of a TVS. Per previous posts, there is a TVS failure mode that is undetectable so I have at least two between the transformer and engine. In the diagram there are four: at the track; at the terminal block; in the TIU; and in the PSX. Also per previous posts, you want the TVS as close to the thing you want protected (engine) as possible, which is why I have them at the track. Some here advocate putting one in the engine.
The TVS on the terminal block in this diagram is not needed. But, as I mentioned above, they are cheap insurance.
I have one at the terminal block because my TIUs are wired in passive mode so it is not inline with the transformer. There is an issue with passive mode I need to learn more about, but that is another topic.
