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01.4IB.46300
Installation
c. Removing the Vacuum Contactor from
the Upper High Voltage Compartment
!
CAUTION
Do NOT work on a Medium Voltage Controller
vacuum contactor with the control circuit
energized.
To remove the vacuum contactor from the
upper compartment perform the following
procedures:
i. Visually inspect the isolating switch to
ensure it is in the
OPEN
position and
that the insulating shutter displays the
CLOSED
indicating stripes.
ii. Confirm that the fuses are deenergized.
iii. For 400A contactors, the fuses may be
removed using a fuse puller for the
clip-on style fuses or by removing the
bolts for the bolt-on style fuses.
iv. Disconnect the secondary control circuit
plug from the left side of the vacuum
contactor and stow it so that the cable
will not be damaged.
v. Remove the bolt from the
hold-down bracket
vi. Unsnap pin collar from the interlock rod
clevis and remove pin.
vii. Remove bolts for contactor line and
load connections (bolt-in unit only).
viii. Carefully remove the contactor from the
compartment.
!
CAUTION
The contactor weighs in excess of 50 lbs. and
assistance may be required to safely remove
it from the compartment and transport
it. Failure to use caution when moving the
contactor may result in equipment damage
and/or personal injury.
ix. If the contactor is being replaced, move
the contactor interlock lever to the new
contactor.
x. Reverse the procedure to reinstall the
contactor.
xi. Adjust the contactor interlock rod
according to the Contactor Interlock
Rod Adjustment procedure found in
the most current version of Eaton
IB-48041.
Note:
Store the vacuum contactor in a safe
location to prevent damage to it while
it is outside of the compartment.
g. p
ower
c
onnections
FlexTrol
™
must be grounded before power
connections are made. See
External power cable connections should be
installed in the controller after the equipment
is placed in the permanent location and the
grounding connections described in
Ch 4 Installation, H. Grounding
are completed.
Grounding cables must be connected to the
equipment ground bus and all high voltage
terminals that must be handled or touched
during the power connection and installation
process.
Table C, General Guideline for Outgoing Feeder
lists recommended maximum cable
sizes and cables per phase for equipment
with only front access. For equipment cable
requirements that exceed the recommended
maximum cable sizes, equipment rear access
and rear cable extensions are needed. The
extension depth shall be determined by the
specific equipment requirements.
