Siemens MJ-4A Installation And Operation Manual page 72

Appendix D: Menu Parameters
D.3.2.2 Multiple Utility Windings
Regulators with more than one utility winding utilize the
"A" phase utility winding for control and motor power, and
Figure D.6 U2 Connects to a "U" Terminal (U7 or U8) Which is to the Left of E2
Figure D.7 U2 Connects to a "U" Terminal (U7 or U8) Which is to the Right of E2
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the "B" and "C" phase windings for fan(s) power. For this
case, use the Single phase procedure, defined above for
the "A" phase winding.
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