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Users Manual
8
The R-coil has advantages over other types of current transformers:
•
It is not a closed loop. The second terminal is passed back through
the center of the toroid core (commonly a plastic or rubber tube)
and connected along the first terminal. This allows the coil to be
open-ended, flexible, and able to be wrapped around a live
conductor without disturbing it.
•
It has an air core rather than an iron core. It has a low inductance
and can respond to fast-changing currents.
•
Because it has no iron core to saturate, it is highly linear even
when subjected to large currents, such as those used in electric
power transmission or pulsed-power applications.
A correctly formed R-coil, with equally spaced windings, is largely
immune to electromagnetic interference.
Use the wire clips for easy identification of the four current probes.
Apply the clips that are appropriate for your local wiring codes on both
ends of the current probe cable. See Figure 4.
Storage
When not in use, keep the Logger in the protective storage bag/case.
The bag/case has sufficient space for the Logger and all the
accessories.
If the Logger is stored for an extended period of time or is not in use
for a long time, you should charge the battery at least once every six
months.
Figure 4. Test Leads with Color Coding
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