Instruction Manual
© GE Grid Solutions
11
6.2.
Primary bar type (if applicable)
Primary
bar
is
always
supplied
completely assembled with the delivered
CT. Clean the primary terminal as
explained in “CONTACT SURFACES
PREPATION”
6.3.
Double / Triple Reconnection
Primary type (if applicable)
The current ratio of the OSKF can be
single with only one single bar, double or
triple primary ratio. Double or triple
primary ratio can be easily changed by
the user following the instruction of the
approved set of drawing. This changing
ratio is made by means of reconnection
bars located in the top tank, closer to
primary terminals. See set of drawing to
know how the reconnection bars need to
be positioned in order to have the
required ratio.
6.4.
Grounding
The transformer fixation base has one or
two plates that should be linked to the
substation ground system through the
grounding connector supplied with the
equipment.
6.5.
Secondary terminals
Connect protection and/or measure
instruments to the secondary terminals
as shown on the nameplate. See the
tightening torque in drawings of the
project
A point of each secondary terminal
must be connected to the ground in
order to fix the potential.
Secondary terminals not used must
be short-circuited and grounded.
6.6.
Terminal marking
Primary and secondary terminal marking
are done according to the specified
standard. See set of drawing.
Primary and secondary connection
scheme are shown on schematic plates,
fixed on the CT.
7.
OIL LEVEL INDICATOR
The position of the oil indicator can be
verified through the rectangular window
of the top cover.
The plate of the indicator is divided in
three areas. Central area shows the
green strip and higher and lower areas
are shown with a red strip. In normal
conditions, the indicator shows the
green strip of the indicator.
In case of oil level indicator is in either of
the red areas, the transformer must be
removed from operation and GE
informed immediately.
