User Guide

Figure 6
Model UT232: OPERATING MANUAL
19
Black
Red
Blue
Yellow
Insert red test leads to V1 input terminal.
Insert blue test leads to V2 input terminal
Insert yellow test leads to V3 input terminal and
connecting it to every live wire of the 3 phase.
Insert black test leads to COM input terminal and
connect it to the neutrual wire of the 3 phase.
You must specify that this connection is used only
when the main transformer have STAR connection.