Terminal Marking; Grounding; Bellows Blocking System For Transportation - GE OTEF-72 Instruction Manual

Instruction Manual
The neutral point of each secondary
shall be connected ti the grounding
terminal located in the terminal block,
in order to have a reference for the
voltage.
Secondary terminals not used must
be kept opened and a point be
grounded.
Never short
terminals of a VT. I can cause damage
and fail to the VT.

5.3. Terminal marking

Primary and
marking are done according to the
specified
approved drawings.
Primary and secondary connection
scheme are shown on the name plate,
fixed on the VT secondary box cover.

5.4. Grounding

The transformer
earthing terminals located at the
bottom tank that should be linked to
the substation ground system through
an appropriated grounding connector,
if requested, supplied with the
equipment. See set of drawings to
confirm rage of cable that can be
used.
Example of grounding terminal
© GE Grid Solutions
circuit secondary
secondary terminal
standard. See set
tank has
6. BELLOWS BLOCKING SYSTEM FOR
TRANSPORTATION
For transportation purposes, the bellows is
fixed (no movement) using a KIT of synthetic
cushion lightly compressed by the top cover
as shown in the picture below:
of
two
Example of bellows blocking system
Before putting the VT in the pedestal or
when storing, first it is necessary to remove
the bellows
transportation following the steps below:
•Mark a reference line for the top cover
relative to the primary terminal (using a
marker or a pencil or any similar device) with
the aim of at the end of the procedure the
top cover Will be at the original position.
•Remove the four M6 screws that fix the top
cover to the bellows flange.
•Remove the top cover, with care, keeping a
vertical movement. Do with care in order do
Example of grounding connector
blocking system for