17
18
Figure 4 Power measurement of three-phase four-wire system
(As shown in Figure 5), connect
V1
end/red testing pen,
V2
end/blue testing pen
and
COM
end/black testing pen to every firing line of three-phase load respectively
during load measurement of three-phase three-wire system. V3 end/yellow testing pen also
cannot be measured.
Figure 5 Power measurement of three-phase three-wire system
UT241/242/243 OPERATING MANUAL
UT241/242/243 OPERATING MANUAL
