Connecting The Optional Shunt-Trip Device - S&C Mark V Circuit-Switchers Installation Manual

Installation

Connecting the Optional Shunt-Trip Device

If the optional shunt-trip device has been specified, the
insulated operating shafts should be installed at this time
on circuit-switchers rated 69 kV and up. The necessary
conduit—with control wiring of recommended size—should
be in place, although the control wiring for the shunt-trip
solenoids should be left disconnected at the switch-operator
end until Step 5 on page 26 has been completed. Refer to
S&C Instruction Sheet 711-600 for instructions on insulated
operating-shaft installation.
After the insulated operating shaft has been installed,
fully disengage the retractable bracket which secures the
shunt-trip operating shaft extending from each brain, as
shown in Figure 11.
Figure 11� Complete pole-unit, with shunt-trip device, after mounting on structure�
18 S&C Instruction Sheet 711-510
Shunt-trip insulated
operating shaft