Instruction Manual
© GE Grid Solutions
10
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. Confirm that the
bellows
is
free
for
internal
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. The screws shall be
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)
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).
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
terminals
with
appropriate connectors so that they
assure a good contact.
Lifting eye M10
Top Cover
Cushions of
synthetic
foam
Protection
film
Bellow
Fix screw
