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4.3. CT / CAN / RS485 / NTC connection
CT (Current transformer) can measure the value and direction of AC current. Refer to Fig. 11 for the correct connection
of CTa.
Fig. 11 CTa connection
Step 1: Refer to Fig. 11 for correct position of CTa. Wrap the CT around L wire of incoming mains, make sure that the
CT arrow direction is “home → grid”.
Step 2: You can use network cable & terminal caps to extend CT wires if necessary, the maximum CT cable length is
200m.