Toshiba JK Series - Low Voltage Compartment; Main Bus Compartment; Wiring.

Page 22 GENERAL DESCRIPTION
LOW VOLTAGE COMPARTMENT
The low voltage compartment contains
controller components rated 600 volts
maximum. These may include such items as
overload relays, pilot devices, control relays,
Hazardous Voltage. Turn
off and lock out control
circuit power before
servicing.
The location and size of the low voltage
compartment will vary depending on the
particular controller arrangement. In a typical
two-high
controller, the low
voltage
compartment is located in the center of the
enclosure.
A
is located behind the low voltage
door which is used to mount various relays and
other devices. The
is hinged in such
a way it can be swung open if necessary to
gain access to the main horizontal bus which
is located directly behind (Fig. 26).
Hazardous Voltage. Turn
off and lock out all
control
and primary
power before opening
this panel.
Low voltage vertical
feed directly
into the upper and lower left hand corners of
the low voltage compartment. A horizontal
low voltage
is provided at the lower
front of each low voltage compartment. At
each end of the horizontal
there is an
opening for inter-cubicle control wiring.
MAIN BUS COMPARTMENT
Main
bus bars extending
horizontally
throughout a line-up are located in an isolated
compartment located in the rear center of the
enclosure (Fig. 27). From the main bus, riser
bars supply power to each individual controller.
Standard main bus bars are copper with tin
plating. A copper ground bus is also located in
Fig. 26
Low Voltage Opened to
Expose Main Bus
Fig. 27 Main Bus Compartment
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