Magnetic starter control transformer
Magnetic starter control transformer
(OP)
Is there any rule of thumb or table that lists the size of a control voltage transformer for 120 volt motor starter coils from size 0 thru size 6, assuming that the starter coil is the only load on the transformer?





RE: Magnetic starter control transformer
RE: Magnetic starter control transformer
Here’s a few pages on the subject… http://www.cutler-hammer.eaton.com/fred/tmgweb/00020106.pdf
Seems like above size 4, interposing relays with 480V magnetic-starter coils may be appropriate. CPT sizing is somewhat starter-manufacturer dependent.
RE: Magnetic starter control transformer
http://www.ramusa.com/Data/TechDocs/TechDoc_981505753/DBS%20INLINE.pdf
for Table 7 on Page 7 giving sizes of control transformers.
RE: Magnetic starter control transformer
RE: Magnetic starter control transformer