WIRING CONNECTIONS PROD UCT IN FORMATI ON
1TNC9 2825 0M0201 16
Current measurement of FC610 is via a built-in 3-phase CT which is rated at 1 A or 5 A selectable
through configuration. An external CT with a secondary rated 1 A or 5 A which is wired through
FC610 CT inputs, is usually required in an application.
1) Always check the phase of the measured voltage and current to ensure the matching phase
sequence and avoid error reading.
2) The current measurement accuracy also depends on the accuracy of selected external CTs.
Figure 18: Current measurement single phase connection
Figure 19: Current measurement 3phase, IT network connection
Figure 20: Current measurement 3phase+N, TN/TT network connection
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