29
test lead into “VC” hole, Put black test lead into “COM” hole. And put the
four test pens connected to the await measuring power supply or load side
of three-phase and ground terminal. For the three-phase four-wire loading
return circuit, Meter displays the phase sequence test results.
（
2
）
Three horizontal line from top to bottom on behalf of A, B, C phase,
Such as lack of one phase, will be displayed. Lack A Phase will missing the
top of the horizontal line. Lack B phase will missing the bottom of the
horizontal line. As shown in Figure 25, on behalf of lack of A phase voltage
。
figure 25
（
3
）
If the three-phase positive sequence, it will show "E", as shown in
Figure 26.
。
Figure 26
（
4
）
If the three-phase anti-order, it will display "Y", as shown in Figure 27,
