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Switch ratings at 60 Hz shall be in accordance with IEEE C37.2, and ANSI
C37.06 and as [follows:] [indicated.]
Nominal voltage.............................................[_____]
Rated maximum voltage.......................................[_____]
Maximum symmetrical interrupting capacity...................[_____]
Maximum asymmetrical interrupting capacity..................[_____]
3-Second short time current carrying capacity...............[_____]
Rated continuous current (kA)...............................[_____]
BIL (Impulse Level).........................................[_____]
2.5.1.2
Operating Mechanism Controls and Devices
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NOTE: The switchgear control switch, status
lights, metering, and relaying will be located on
the secondary metal-clad switchgear; additionally, a
control switch, status lights, and a local-remote
selector switch will be mounted at the interrupter
switch. If this equipment cannot be mounted on the
secondary metal-clad switchgear, then these devices
will be installed in an instrument and relay cabinet
adjacent to the interrupter switch operating
mechanism cabinet. Transformer differential and
differential lockout relays will be located in the
metal-clad switchgear. Where there is no metal-clad
switchgear, the appropriate material from the
paragraph will be included as a part of paragraph
SUBSTATION EQUIPMENT.
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An operating mechanism cabinet shall house the electrical devices listed
below, which shall be rated for the application and shall be suitable for
the ac or dc control voltage available as shown or specified. Unless
otherwise noted, manufacturer's standard devices for the rating specified
shall be provided and shall include the following:
a.
A light connected to a cabinet door-actuated switch, so that the
light is energized only when doors are open.
b.
A heater continuously energized to prevent condensation within the
cabinet over ambient temperature ranges from [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 the heater is de-energized when doors are
open. High-temperature thermal protection shall be included.
c.
An operator charging motor with thermal-overload relays.
d.
A motor control contactor with relays, solenoids, and any other
control devices required.
SECTION 16311A
Page 24
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