TCI HGA Manual - Manual (Page 84)

84
Phase C system
CT current
feedback missing:
Phase C current
is zero while
Phase A current
is present.
Check Phase C CT
for open circuit or
loose connection.
Phase A and
Phase C CT
current feedback
swapped:
Phase A current
(red) in phase
with Phase C
voltage (blue)
instead of Phase
A voltage (green).
To correct swap
Phase A and Phase
C system CT
current feedback
and recheck plot.
Phase A current
(red) is opposite
polarity of Phase
A voltage (green)
and Phase C
current (yellow) is
opposite polarity
of Phase C
voltage (blue). To correct, re-install
both Phase A and
Phase C system
CTs with polarity
arrow in opposite
direction OR swap
positive and
negative
connections of
each CT at HGA
filter terminal block
then recheck plot.