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01.4IB.46300
Installation
e. p
ositioning
oF
tHe
e
nclosure
To enable proper operation of equipment,
it is essential to securely fasten the lineups
in a true upright position on a smooth, level
surface. The floor should be leveled to within
1/8" for every 10 linear feet.
illustrates
the medium voltage controller floor plan.
The equipment position should allow for the
proper removal of the medium voltage vacuum
contactor.
When three or more controller units are to
be arranged in one continuous lineup,
THE
CENTER SHIPPING UNIT SHOULD BE THE
FIRST LOCATED
. The other shipping lineup
should then be installed in successive order in
each direction from the center of the structure.
After positioning the equipment, check the
equipment to ensure it is level. If necessary,
shims may be inserted beneath the equipment
base to achieve a level condition.
The recommended practice is to weld the
switchgear structure to the floor channels
using a tack weld at points indicated for
anchoring on the drawing. After welding, any
damaged paint should be removed and the
weld and surrounding metal should be painted
to deter corrosion. If welding facilities are not
available, the switchgear should be bolted to
the floor channels.
!
CAUTION
Do NOT work on a Medium Voltage Controller
vacuum contactor with the control circuit
energized.
F. r
eMoving
tHe
M
eDiuM
v
oltage
v
acuuM
c
ontactor
!
CAUTION
Do NOT work on a Medium Voltage Controller
vacuum contactor with the control circuit
energized.
All work on this contactor should be done
with the main disconnect device open. As
with any contactor of this voltage, there is
danger of electrocution and/or severe burns.
Make certain that the power is off. Check for
voltage with voltage sensor or a meter of the
appropriate range.
!
WARNING
1) Removing the Vacuum Contactor from the
High Voltage Compartment
The two processes necessary to remove
the vacuum contactor are opening the
high voltage compartment door and
removing the vacuum contactor. The
process for opening the door and removing
the vacuum contactor from the lower and
upper compartments are explained in the
following procedures.
a. Opening the High Voltage
Compartment Door
To open the high voltage compartment
door follow these procedures:
i.
ON Position:
When isolating switch
operating handle is in the
ON
, the isolating
switch is in the closed position, the
high voltage compartment door is
interlocked shut and the controller
may be energized.
