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Test Leads - Markings
The 1745 Logger includes detachable labeled test leads for voltage terminals
L1 or A, L2 or B, L3 or C, and N. Another detachable set of leads provides
operating power to the Logger. The Flexi Set or current clamp sets are
connected by a seven-pin plug to the Logger A connector. Color coding clips
are provided for your convenience.
Table 5 shows the test leads and markings of the Logger.
Connecting Current Probes
Connect current clamps and Flexi Set probes so that current will flow in the
direction marked by arrows on the probes. Current must flow from the energy
generator to the energy consumer (the load) in order to maintain a positive
active power. Orient the Flexi probe so that the arrow points towards the load.
(The polarization of the test lead for neutral conductor current is not
significant, because the phase angle of the neutral conductor current is not
evaluated.)
Logging with Voltage Converters
The 1745 Logger includes an adjustable convertor ratio that enables it to be
used with voltage convertors (potential transformers, or PTs).
When logging with voltage convertors, make sure the power supply
cables are not connected in parallel to the voltage test leads, or the
Logger's power consumption can reduce accuracy.
The convertor ratio is defined using the PQ Log software.
Shop for Fluke products online at:
Table 5. Test Leads - Markings
Test Leads
Phase L1 or A
Phase L2 or B
Phase L3 or C
Neutral wire N
MyFlukeStore
www.
Power Quality Logger
Using the 1745 Power Quality Logger
Markings
L1 / A
L2 / B
L3 / C
N
Note
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