Omicron Lab CT Analyzer, User Manual

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Setup and Connection
2.4.3 Wiring for Primary Resistance Measurement
For the primary winding resistance measurement, connect the CT Analyzer as
shown in Figure 2-4. Observe the general safety rules in section 2.1 on page 21.
1. Make sure that the primary side of the CT is connected to PE on one side and
open on the other side.
2. Disconnect the hot side of all secondary windings of the CT in order to
remove any load from the CT. Every kind of load remaining on the secondary
side of the CT during measurement leads to incorrect measurement results
or error messages.
3. Connect the black socket of CT Analyzer input "Prim" to the grounded side
of the CT’s primary winding and the red socket of this input to the open
(ungrounded) side.
4. Connect the black "Output" socket of the CT Analyzer to the grounded side
of the CT’s primary winding and the red "Output" socket to the ungrounded
side of the primary winding.
Figure 2-4 Basic wiring for primary winding resistance measurement
Utility line Utility line