Selco
C6200 FlexGen
Revision: 03-06-2014
Page 10 of 24
5.3 Current Inputs
The C6200 FlexGen measures current through external current transformers (CTs). The C6200
FlexGen supports 5 A CTs. Class 1 CTs for protection is recommended. The CTs can be shared
with third-party equipment provided that this equipmed due not place a burden on the CTs (that the
CT inputs are isolated by e.g. transformers inside the third-party equipment).
The CT ratio should cover the maximum current of the generator.
The CTs must be capable of coping with limited time short-circuit currents without going into
saturation (Protection Transformers).
The external CTs connect to the GENERATOR CURRENT terminals. It is important to ensure that
the direction of the current flow is correct. The current flow is usually indicated by S1 and S2
notations on the CT enclosure. S1 of the CT on phase 1 connects to terminal 9 and S2 connects to
terminal 10.