6 Interruption . Number of
This screen displays the
total no. of times the auxiliary
supply was interrupted. Even
if the auxiliary supply is
interrupted count will be
maintained in internal memory.
To reset No of Interruption
manually see Section
Resetting Parameter 3.2.3.1
7. Negative Sign Indication
When Power factor lies
in second and third
quadrant, it has -’ve
sign, so active power
has -’ve sign as shown
in the phaser diagram.
If the segment glows, it indicates negative
sign of displayed
parameter.
Also in 3rd & 4th quadrant, reactive power
is -’ve. So the -’ve annunciator glows to
indicate the operation of system in
respective mode as per the Phasor
diagram shown on page 48. For example
in the screen shown, Input values were
0
240V , 20A, and phase angle 187 hence
L-N
the phase active power is displayed with
-’ve sign.
19
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