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CET Electric Technology
Before installation, make sure that the 35mm DIN-Rail is already in place.
Align the top of the mounting clip at the back of the adapter board at an angle against the top of
the DIN rail as shown in the figure below.
Rotate the bottom of the adapter board towards the back while applying a slight downward
pressure at the top to make sure that the device is completely and securely fixed on to the DIN rail.
Figure 2-24 DIN-Rail Mounting of SCCT Adapter Board
2.3.2.3 Installing Mains SCCTs
The following instructions and figures describe the installation of the Mains SCCTs.
1.
If SCCTs are used for the Mains Current Inputs, please ensure to select the 1A Mains Current Input
option for the PMC-592. Before installing the Mains SCCTs, please ensure that SCCT’s contact
surface is clean and without contaminants for best accuracy performance.
2.
It’s very important to first connect the SCCT’s output wires to the Mains Current Inputs before
mounting the SCCT. Connect the White wire to the Ix1 terminal and the Black wire to the Ix2
terminal as shown below where x=1, 2, 3 or 4. Apply the correct torque to tighten the screws.
3.
The SCCT’s load direction as indicated by the arrow symbol on the CT and should be consistent with
the Current flow of the Mains circuits. The
Mains
CT Polarity
can also be configured via the Web
interface (Setup => Basic Setup) or through Modbus Register # 6008.
Figure 2-25 Connecting the Mains SCCT’s output wires to the Mains Current Inputs