Figure. 5.2.1 - 60. Residual I02 CT scaling (sensitive).
Displaying the scaling
Depending on whether the scaling was done based on the CT primary values or the protected object's
nominal current, the measurements are displayed slightly differently. The first of the two images shows
how the measurements are displayed when the CT primary values are the basis for the scaling; the
second shows them when the protected object's nominal current is the basis for the scaling.
Figure. 5.2.1 - 61. Scalings display (based on the CT nominal).
Figure. 5.2.1 - 62. Scalings display (based on the protected object's nominal current).
As the images above show, the scaling selection does not affect how primary and secondary currents
are displayed (as actual values). The only effect is that the per-unit system in the relay is scaled either
to the CT nominal or to the object nominal, making the settings input straightforward.
A
AQ
Q-F205
-F205
Instruction manual
Version: 2.04
60
© Arcteq Relays Ltd
IM00013
Summary of Contents for AQ F205
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