Figure 1 below is the wiring diagram for the Advanced Multifunction Power Meter DPM-C530A. The primary terminals P1 and P2 are connected for the incoming primary current. The primary current enters terminal P1 and flows into terminal P2. The secondary current enters terminal I1+ of the power meter and leaves from terminal K1 of the CT, and then flows into terminal I1- of the power meter through terminal L1 of the CT. Follow the current flow direction as shown by the arrows in the wiring diagram of Figure 1, then make the connections of terminals I2 and I3 to complete the wiring between the CT and the power meter. If you are unsure of the installation place of the CT, measuring instruments can be used to inspect whether voltage and current are at the same electric phase, as shown in Figure 2 below. If the measurement shows that voltage and current are not the same electric phase, as shown in Figure 3, you can adjust the wiring based on the measured results to complete the 3 phase CT wiring set up.
Figure 1. The wiring diagram of the Advanced Multifunction Power Meter DPM-C530A
Figure 2. Device measuring voltage and current at the same electric phase
Figure 3. Device measuring voltage and current not at the same electric phase
