inches above its grounded platform plate. Insulation of the switch
operating mechanism shall include both insulated interphase rod sections
and the insulated vertical shaft.
2.5.4.5
Switch Operators
**************************************************************************
NOTE: Indicate remote control of the motor operator
on the project drawings. Delete electrical
interlocking if not required. Select stored-energy
type operators for use with SF6 interrupters.
Delete the requirement for remote telemetry units
and SCADA control where not applicable.
**************************************************************************
[Motor operators shall be stored-energy mechanisms having a [[24-volt]
[48-volt] [125-volt] dc] [120 volt ac], charging motor, with a manual
operating mechanism. Opening and closing operating time shall be not more
than [6] [_____] cycles for each operation.] [Motor operators shall be
[120-volt] [240-volt] ac, gear-coupled motor operators, with a manual
operating mechanism. Opening and closing operating time shall be not more
than [10] [_____] seconds for each operation.] Operators shall be
configured so that the switch actuator is padlockable.
a.
Operation: The operating mechanism shall permit both manual and
electrical operation of the switch at its operating mechanism
cabinet, and electrical operation by the indicated remote control
circuitry. The operating shaft or operator cabinet shall be
clearly and permanently marked to indicate continuously the
positions of the switch. An externally operable decoupler shall
be provided at or near the point of entrance of the shaft into its
operator housing so as to permit disengagement of the shaft for
inspection, tests, maintenance, or repair of equipment located
within the operator enclosure. Where indicated, a switch shall be
electrically interlocked with [_____] as shown. Switch operators
shall be provided with remote telemetry units (RTUs) for remote
operation and integration with supervisory, control, and data
acquisition systems. Systems, components, and equipment shall
conform to the requirements and recommendations of IEEE C37.1.
b.
Operating Mechanism Cabinet: A NEMA 250 type [_____] enclosure
complying with paragraph CABINETS AND ENCLOSURES shall be provided
[where indicated] [as suitable for the required operation]. The
electrical devices listed below shall be rated for the application
and shall be suitable for the available low-voltage alternating or
direct current, [as shown] [specified.] Unless otherwise noted,
manufacturer's standard devices for the rating specified shall be
provided and shall include the following:
(1) "Trip" and "Close" pushbuttons or switch and position
indication lights.
(2)
A switch-operation counter.
(3)
Shaft travel limit switches and any required safety devices.
(4) A light connected to a cabinet door-actuated switch, so that
the light is energized only when doors are open.
SECTION 16311A
Page 31
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