3. Connect the three phases with the phase sequence being
R-Y-B to the corresponding terminals marked U1, U2 and
U3 on the unit. Make sure that the three phases coming to
the unit come through control fuses of 1.0 Amp rating.
This will protect the electronics inside from damage due to
severe over voltages or phase faults in the system.
4. Connect the neutral to the terminal marked U4.
5. For CT operated meter, connect the two wires from the R-
phase CT to terminals marked M1 & L1 such that S1 from
CT goes to M1 on the unit. For whole current meter, pass
the R-Phase current cable through the meter CT hole in
such a way that current flows in from side marked "R-
Phase Source" and passes out through side "R- Phase
Load". NOTE: The current carrying capacity of the whole
current meter is limited by the maximum cable size which
can be passed through the CT hole, which is 4sq.mm.
6. For CT operated meter, connect the two wires from the Y-
phase CT to terminals marked M2 & L2 such that S1 from
CT goes to M2 on the unit. For whole current meter, pass
7
Infinity – Operational Manual
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