Toshiba JK Series Instruction Manual page 14

GENERAL DESCRIPTION
POWER CELLS WITH WITHDRAWABLE TYPE
CONTACTORS - MAJOR COMPONENTS
A. Isolation Switch (Fig. 10)
The isolation switch is the same design as that
used for the fixed-type contactor, except in this
configuration the switch accepts a direct
connection from the line stabs of the removable
contactor carriage.
automatically made
carriage is installed in the medium voltage
compartment.
B. Withdrawable Contactor Carriage
(Fig. 11)
The withdrawable contactor carriage is a
removable assembly that contains the following
components:
- Vacuum contactor
- Power fuse housing assembly
- Set of line and load power stab terminals
- Auxiliary contacts for vacuum contactor
- Control wiring disconnect plug
- Set of wheels to facilitate moving the
carriage when it is outside the controller
The withdrawable contactor carriage is shipped
installed in the power cell. It should be removed
for access to the power cell during initial
installation, connection of motor cables, etc.
After installation, periodic removal of the carriage
will also be necessary for routine maintenance of
the contactor or replacement of the power fuses.
The connection
when the contactor
is
Fig. 10 Isolation Switch
Fig. 11 Withdrawable Contactor Carriage
Page 10