Illustration 4.15 CTs Do Not Measure Capacitor Current
For installations where the CT connection point can be
moved, the configuration shown in Illustration 4.15 is also
possible. In some retrofit applications, summation CTs are
needed to ensure that the capacitor current is not
measured.
Summation CTs can also be used to subtract 2 signals from
each other and so subtract the capacitor bank corrected
current from the total current.
NOTICE
Use summation CTs with an accuracy of 0.5% of better.
Illustration 4.16 Capacitor Bank Mounted on PCC with CTs
Ensuring that Capacitor Corrected Current is not Measured.
Electrical Installation Operating Instructions
MG90V302 Danfoss A/S © 09/2014 All rights reserved. 25
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