HVDC TRANSFORMER BUSHINGS
PHI 530.1425.2500
PHI 265.850.1500
Kepco project
IS 2664 GB
Page
16
of
70
•
Lift the bushing in horizontal position
up to 2 m from the floor.
•
Start inclining the bushing by acting on
the Tirfor (Item 2).
•
Continuously
check
during
the
inclining operation that the bottom part
of the bushing will not hit the floor or
any other part.
•
Check the correct inclination on the
transformer side of the bushing flange
angle by a Quadranfix inclinometer or
by an electronic inclination gauge (not
supplied by GE RPV).
•
Control with the same instrument the
effective inclination angle of the
transformer turret flange and adjust
the
bushing
inclination
angle
accordingly by acting on the Tirfor
(Item 2).
•
When the bushing axis will coincide to
the turret axis and the inclination angle
is OK, slowly proceed with the bushing
insertion inside the turret.
•
By continuously controlling that the
turret and the bushings are aligned,
gradually insert the bushing inside the
transformer turret.
NOTE:
During this operation, it is
mandatory to continuously check that the
bushing cone will remain centred respect
the turret flange and the CT coils
arrangement, normally placed inside the
turret.
Check that there are no interferences and
that no damages or scratches occur on the
cone and the metal parts of the oil side of
the bushing. In case of damages,
immediately
contact
GE
Energy
Connections RPV Supervisor and the
Foreman and stop
the operation.
•
Complete the installation of the other
bushings and after the completion of
the transformer preparation, install the
electrostatic top shields on the
bushings.
•
Fill the bushing with SF6 (see
Chapter
8
).
•
Complete all relevant activities for the
transformer preparation.
WARNING: Before proceeding with the
gas filling operation, remove the
Transport
pressure
gauge
(see
Paragraph 3.1
and
Figure 1
).
Quadranfix
inclinometer
Содержание PHI 530.1425.2500
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