The direction of energy flow must be considered. On the inside of the
measuring current transformer there is an arrow, which must point in the
direction of energy flow (from clamps to the consumers). If the direction
of measuring current transformer is wrong, Load Guard will be measuring
negative power. If this happens, turn the measuring current transformer
correctly.
Figure 12: Arrow pointing in the direction of energy flow
SINGLE-PHASE CONNECTION
In case of single-phase connection, the measuring current transformer is
set only on the phase conductor that is used, as shown on the following
figure.
Figure 13: Single phase connection of measuring current transformer
Only one measuring current transformer is needed in single-phase
connection. Load Guard must be connected as shown in the following
figure.
If phase and neutral conductors are switched (L1 in N), the voltage in Load
Guard Configuration Software will be very low, or even 0 V (instead of
~230 V).
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