Connections; Primary Terminals; Primary Bar Type (If Applicable); Two Bar Or Four Bar Reconnection Primary Type (If Applicable) - GE KOTEF-72 Instruction Manual

Instruction Manual
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.

6.2. Primary bar type (if applicable)

Primary bar is
completely assembled
delivered CT.
terminal as explained in "CONTACT
SURFACES PREPATION"
6.3. Two bar or Four bar
Reconnection Primary type (if
applicable)
The current ratio of the Combined
Transformer can be single with only one
single bar, double or triple primary ratio.
Double or triple primary ratio can be
easily changed by the user following the
instruction of the approved set of
drawing. This changing ratio is made by
means of reconnection bars located in
the top tank,
terminals. See set of drawing to know
how the reconnection bars need to be
© GE Grid Solutions
terminals with
always supplied
with the
Clean the primary
closer to primary
positioned in order to have the required
ratio.
Example of HV recconection

6.4. Grounding

The Combined Transformer bottom
tank (VT part) has one grounding pad
that should be linked to the substation
ground system through an appropriate
grounding connector.

6.5. Secondary terminals

Connect protection and/or measure
instruments to the secondary terminals
as shown on the nameplate. See the
tightening torque in the drawings of the
project
A point of each secondary terminal
must be connected to the ground in
order to fix the potential.
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