switching of capacitors, and shall be electrically separate from ungrounded
capacitor enclosures and metal frames. Installations shall include one
primary fuse cutout and one surge arrester for each ungrounded phase
conductor. Fuse link ratings shall be in accordance with the
manufacturer's recommendations. Capacitor equipment, except for
low-voltage control and primary fuse cutouts, shall be subassembled and
coordinated by one manufacturer. Units, including metal pole-mounting
supports and hardware, shall be shipped in complete sections ready for
connection at the site. Low-voltage equipment shall be socket or cabinet
type, mounted on the pole approximately 1.2 m 4 feet above grade, shall be
connected with the necessary wiring in conduit to capacitor equipment, and
shall be provided with secondary arrester protection against switching
surges when recommended by the manufacturer.
2.22
VOLTAGE REGULATOR
**************************************************************************
NOTE: Bypass arresters are normally standard
equipment. Incoming line arresters may not be
needed. Coordinate with the manufacturer.
**************************************************************************
Voltage regulators shall comply with IEEE C57.15 and shall be of the
outdoor, self-cooled, 55/65 degrees C temperature rise, single-phase type.
Windings and the load-tap-changing mechanism shall be mineral-oil-immersed.
When operating under load, a regulator shall provide plus and minus 10
percent automatic voltage regulation in approximately 5/8 percent steps,
with 16 steps above and 16 steps below rated voltage. Automatic control
equipment shall provide Class 1 accuracy. Bypass surge arresters shall be
suitable for [a grounded] [an ungrounded] system and for the associated
regulator voltage. [[Station] [Intermediate] class surge arresters shall
be mounted next to each incoming line bushing on a regulator tank-mounted
bracket and connected to a surge arrester ground pad-mounted on the
regulator tank].
2.22.1
Ratings
Ratings at 60 Hz shall be
Maximum voltage...........................................[_____]
Basic Insulation Level (BIL)..............................[_____]
Current...................................................[_____]
2.22.2
Bypass and Isolation Switches
Switches shall be of the outdoor, stickhook-operated, single-pole,
single-throw, vertical-break type suitable for the indicated mounting.
Switches shall be of a type designed to provide bypass of a single-phase
regulator circuit by an integral sequence which always occurs when each
switch is opened or closed. Each opening sequence shall initially bypass
the single-phase regulator circuit, then open the input and output
circuits, and finally interrupt the exciting current. Opening any
single-phase regulator circuit shall not be possible until after the bypass
circuit is closed. Ratings at 60 Hz shall be in accordance with IEEE C37.41
and as follows:
Maximum voltage...........................................[_____]
SECTION 16301N
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