382090 382091 V4.0 09/07
18
Phase Sequence Measurements
1. Press the
key to turn the meter on.
2. Use the WIRING key to select 3P4W.
3. Connect the voltage test leads to the meter.
Connect the red voltage test lead to the “U1” terminal.
Connect the yellow voltage test lead to the “U2” terminal.
Connect the blue voltage test lead to the “U3” terminal.
4. Connect the voltage test leads to the electrical equipment to be tested.
CAUTION: Turn the meter off before connecting the voltage test leads and the
current probe to the electrical equipment under test.
Connect the red voltage alligator clip to power line “A” phase.
Connect the yellow voltage alligator clip to power line “B” phase.
Connect the blue voltage alligator clip to power line “C” phase.
5. U1, U2 and U3 measured voltages must be greater than 30V.
Press and hold the “
” key.
If the phase sequence is clockwise, the “
” annunciator is displayed.
If the phase sequence is counter-clockwise, the “ ” annunciator is displayed.
Release the “
” key to exit this measurement mode.
Voltage/Current Waveform and Harmonic Analyzer
Please refer to the software operation section for waveform and harmonic measurement
details.
Disabling the Auto Power-Off Feature
The meter automatically enters the sleep mode after approx. 30 minutes to conserve
battery power.
1. To disable this feature:
Press the
key to turn the meter off.
Press and hold the HOLD key and then press the
key to turn the meter on. The
auto power off symbol “
” will switch off indicating Auto Power off is disabled.
2. The Auto power off mode is enabled each time the meter is turned on. It is automatically
disabled in the following modes:
ENERGY mode
Automatic datalogging
When Meter is connected to PC
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