(5) A heater continuously energized to prevent condensation
within the cabinet over an ambient temperature range of [minus 29]
[_____] to [40] [_____] degrees C [minus 20] [_____] to [104]
[_____] degrees F at 90% relative humidity and connected to a
cabinet door-actuated switch, so that the heater is de-energized
when doors are open. High-temperature thermal protection shall be
included.
(6)
An operator charging motor with thermal-overload relays.
(7) A motor control contactor, with relays, solenoids, and any
other control devices required.
(8)
Necessary motor-alarm and interlock switches.
(9) One-pole or two-pole thermal-magnetic, molded-case circuit
breakers suitable for the operating voltage for control, heater,
and light circuits.
(10) A minimum of eight spare motor operator auxiliary contacts,
four normally open and four normally closed, wired to an
interconnection terminal block.
(11) An interconnection terminal block wired to permit remote
open and close operations of the switch and for other required
exterior connections.
(12)
A key interlock if indicated or specified.
(13) A local-remote selector switch and position indication
lights.
(14) Manual trip lever and manual charging handle (in case of
loss of control power.
(15) "Charged" and "Discharged" indicators for stored energy
mechanism.
(16)
Gas pressure indicator, or low gas pressure indicator.
(17)
Local/Remote operation selector switch.
2.5.4.6
Grounded Iron Platform Plate
**************************************************************************
NOTE: Provide a detail on the drawings for securing
the plate to finished grade.
**************************************************************************
The manually-operated, group-operated switch shall be provided with a
grounded platform plate located where the switch operator would stand to
manually operate the switch. The plate shall be constructed of hot-dip
galvanized iron at least 6 mm 1/4 inch thick and shall be approximately 1.2
m 4 feet in length by 750 mm 2 feet 6 inches in width. The plate shall be
laid on finished grade and so secured as shown. Two ground clamps shall be
provided on the plate on the side adjacent to the switch operating
mechanism. Each clamp shall be connected to the station grounding grid
with a No. 4/0 AWG bare copper wire. Separate clamps and a flexible copper
braid conductor shall be used to connect the plate to the switch operating
SECTION 16311A
Page 32
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