First Measurements - Fluke 1738 User Manual

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Users Manual

First Measurements

At the energy study site, look at the information in the panel and the
rating plates on the machines. Based on knowledge of the electrical
supply in the facility, determine the configuration.
To start measurements:
1. Connect the Logger to mains power.
See Measurement Line Power Source on page 13 if you want
to power the Logger from the measurement line.
The Logger starts and shows the Meter screen with Volts,
Amps, and Hz readings.
2. Push Change Configuration. Confirm the study type and the
wiring configuration is correct. For most applications the current
range is set to Auto and the voltage and current ranges are 1:1.
Configure the gain, offset, and engineering unit of measurement
for the sensors attached to the Auxiliary inputs.
3. Push Configuration Diagram for guidance on the voltage test
lead and current probe connections.
4. Plug the voltage test leads into the Logger.
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Note
5. Use the Thin-Flexi current probes and plug the phase A current
probe into the phase A/L1 input jack on the logger, the phase
B/L2 current probe into the phase B/L2 input jack on the logger,
and the phase C/L3 current probe into the phase C/L3 input jack
on the logger.
6. Apply the iFlex Probes to the wires in the electrical panel. Make
sure the arrow on the probe points to the load.
7. Connect the voltage test leads to neutral, phase A/L1, phase
B/L2, and phase C/L3.
8. With all of the connections done, check that the voltages for
phases A/L1, B/L2, and C/L3 are as expected.
9. Read the current measurements for phases A/L1, B/L2, C/L3,
and N.
10. Push Verify Connection to check and correct the phase rotation,
phase mapping, and polarity of current probes.
Most installations use a clockwise rotation.
11. Push Live-Trend to display a chart of the last 7 minutes.