ground dectors for delta systems 480 v ref forum june 2013 transformer neutral

[mr gaget]

we had many delta systems at naval station they were made up with 3 light bulbs 3trasnformers 480/120 some were connected delta pri. grounded y sec and a pushbutton to lift the ground (lamp test). or ungrounded y pri same sec connection. other were 3 240 volt meters or 1meter with a selector switch.

 

[jumper]

Welcome to the forum.

I am not sure of exactly what your question is.

 

[kwired]

If you just wanted to add comments you should have posted to the existing thread, unless it has been closed. If it was closed you probably should have provided a link to the thread or mentioned a little more about it before commenting.

Otherwise - what is the question?

Welcome to the forum