HT HT9020, User Manual

Page: 19 / 52

HT9020
EN - 17
9. If the two phases, to which the test lead has been connected,
are in the correct sequence, the message “
123
” is displayed.
If the phase sequence is incorrect, the message “
132
” is
displayed
10. To start a new measurement, press
F3
(
New
)
Mod New
P h S e q
1 2 3
Phase conformity test
CAUTION
While measuring, the instrument must be held in the operator’s hand.
Fig. 8: Verification of phase conformity
1. The instrument shows the screen nearby, and waits for the
detection of L1 phase of the first system
2. Connect the red cable to the input lead
V

and the black
cable to the input lead
COM
then position the leads
respectively to the L1 phase of the first system and the
ground reference PE of the circuit under test (see Fig. 8)
Mod
P h S e q
P H 1
Wait