CR194 Two-High Vacuum Limitamp@ Control
Motor Cable Termination
Each starter enclosure is equipped with provisions to
run motor cables into the top or bottom of the enclo-
sure. Removable conduit cutout covers are provided in
both the top & bottom (if a bottom is provided) for
bringing in motor cable. Figure 30 shows the covers in
the top. Cable size limits are indicated below. The mo-
tor cable troughs are located on the left side of the
equipment as shown in Figure 31. See the “Cable Ter-
mination Guidelines” section of this instruction for ad-
ditional information
MOTOR CABLE SIZE LIMITS IN CR194
TWO-HIGH LIMITAMP”
I
40” l-500 kcmil
With Shielded
With Shielded Cable and
Cable and Hand-Wrapped,
Prefabricated Non-cone
Stress Cones
Stress Relief
l-250 kcmil
1-#3/0
Preferred Preferred
l-500 kcmil 1+4/o
Possible Possible
l-500 kcmil l-250 kcmil
If all barriers, including the properly placed motor
cable trough barriers, are in place, the top starter can
be motor cabled with the bottom starter energized and
“ON”, and the bottom starter can be motor cabled
with the top starter energized and “ON”.
WARNING:
If one starter is to be motor cabled
with the other starter energized and/or “ON”, all
barriers including the motor cable trough barriers
must be properly installed (see below) and the iso-
lation switch handle for the unit being cabled
must be in the “OFF” (down) position and the
blades must be visibly checked to insure that they
are disconnected from the vertical bus.
When the equipment is shipped it will be assembled
for motor cable entry from the direction specified on
the order. If this information is not known by the fac-
tory, the unit will be shipped suitable for bottom en-
try. Once the equipment is installed in the field, the
cable entry path can be revised by following the steps
listed below.
CABLE ENTRY FROM BOTTOM
Step
1.
Cables to the bottom starter should be run straight
into the motor terminals using the “lower unit” area as
shown in the floor-plan view in Figure 50.
Step
2.
Cables to the top starter should be run in the motor
cable trough using the “upper unit” area as shown in
the floor plan view in Figure 50. This cable trough is
formed by two metal barriers in the left rear corner of
the lower compartment. Once the cables enter the up-
per compartment they can be formed forward to align
with the motor terminals.
Figure 30.
Top view of two-high enclosure showing
conduit cutout cover plates
Figure 3 1. High-voltage doors open showing
motor cabling area
18
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