Instruction Manual
© GE Grid Solutions 9
3.4. Storage
The units can be stored:
No more than four months after
the CT left the factory
In the horizontal position;
On a smooth surface;
Minimum and maximum
ambient temperature as per
CT specification.
More than four months after the
CT left the factory
On a smooth surface;
Unpacked;
Put in vertical position;
Remove the bellows blocking
device as described in item 4.
NOTE: The units stored outside in
vertical position must be screwed on to
the ground, even if the storage is
foreseen for a short period of time.
4. BELLOWS BLOCKING SYSTEM AND
ASSEMBLY IN THE STRUCTURE
4.1. Bellows blocking system
For transportation purposes, the
metallic bellows device is blocked
(secured from movement) using
cushions of synthetic foam slightly
compressed by the top cover. A
protection of plastic film is also put in
place on the periphery of the bellows to
protect it against contact with the top
cover.
In order to remove the blocking system,
place the current transformer in vertical
position on a flat surface.
Remove the bellows blocking device,
following the procedure below:
1)
Mark the position of the top cover
with respect to the head of the
transformer with a vertical line
(using a marker, chalk or pencil);
2) Screw the lifting eye M10 (if
applicable);
3) Remove the screws that fix the top
cover;
4) Remove the bellows blocking device
and the protection film;
5) Confirm by visual check that the
bellow device is in good condition:
a) Geometry: Top of the bellow is
horizontal (i.e. not tilted due to
possible deformation of the
bellows convolutions). No
distortion and/or asymmetry of
the bellows (i.e. convolutions are
evenly displaced around the
circumference of the bellows)
b) Surface: no damage or
deformation such as dents
and/or buckling in the bellow
TO AVOID DAMAGE TO THE BELLOWS
DEVICE, NEVER SUPPORT ANY MATERIAL
ON THE BELLOWS.
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