469
Motor Management Relay
Power Measurement
Conventions
5–68
S10 Power Elements
By convention, an induction motor consumes Watts and vars. This condition is
displayed on the 469 as +Watts and +vars. A synchronous motor can consume
Watts and vars or consume Watts and generate vars. These conditions are displayed
on the 469 as +Watts, +vars, and +Watts, –vars respectively (see the figure
below).
FIGURE 5–17: Power Measurement Conventions
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S10 Power Elements
^
I 1
^
I 2
^
I 3
^
I 4
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