Uni-T UT233 Расширенная инструкция онлайн [36/50] 528828

Model UT233: OPERATING MANUAL

H. Phase Sequence

For Phase Sequence Judging, connect the Meter as

follows:

1. Press the MENU to select AC Voltage (main display)

+ AC Voltage (left secondary display) + AC Voltage

(right secondary display) range as figure 30.

Insert red test lead into V1 input terminal.

Insert blue test lead into V2 input terminal.

Insert yellow test lead into V3 input terminal.

Insert black test lead into COM input terminal.

Connect these four test leads to the circuit under

test or the loading of three phases and grounding

terminal

For the loaded return circuit of 3 phases 4 wires, the

Meter shows the phase sequence result as figure

31, 32 and 33:

Figure 30

Figure 31

=phase missing

Figure 32

=negative phase

sequence

Figure 33

=positive phase

sequence

Black

Red

Blue

Yellow