Assembly In The Structure; Contact Surfaces Preparation; Connections; Primary Terminals - GE OSKF Instruction Manual

Current transformer
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Instruction Manual
6) Reinstall the Top Cover with care
lining up the vertical marker line with
the head of the transformer to
ensure that original fixing position is
maintained.
bellows
is
movement and in a vertical position.
The green oil level marker shall be
clearly visible through the window.
7) Tighten the fixing screws. The
threads shall be lubricated with
grease << MOLYKOTE P37>> or
equivalent.
tightened to a maximum torque of
7N.m for screw M6 and 16N.m for
screw M8.
8) Remove the lifting eye M10 (if
applicable)
Lifting eye M10
Top Cover
Cushions of
synthetic
foam
Protection
film
Bellow
Fix screw

4.2. Assembly in the structure

The transformer shall be set up in
vertical position.
It is very important that the surface on
which the CT will be set up is flat
(tolerance for no more than 1mm).
© GE Grid Solutions
Confirm that the
free
for
internal
The screws shall be
Verify if the four feet are supported on
the structure. If not, it is necessary to
insert a shim before putting the fixation
screws.
Remove the lower lid of black plastic, if
applicable, from secondary terminal box.
It is only used for transport. It cannot be
used as tube guide.

5. CONTACT SURFACES PREPARATION

It is recommended to clean all aluminum
contact surfaces with sandpaper 150
grain in order to eliminate the oxidation
layer. Scrub the contact surfaces with a
metallic brush (diameter of the thread
0.3mm) and impregnate with grease of
the type "PENETROX" or equivalent. All
the surfaces must be completely covered
with grease.
For silver or tinned contacts, only clean
(do not use sandpaper) and polish the
side of the aluminum. Cleaning silver or
tinned surfaces with sandpaper could
cause damage to the protection layer.

6. CONNECTIONS

6.1. Primary Terminals

Connect the high voltage cable, or tube,
to
the
primary
appropriate connectors so that they
assure a good contact.
terminals
with
10

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