2 S&C Instruction Sheet 765-510
Introduction
Qualified Persons
WARNING
Only qualified persons who are knowledgeable in the installation, operation, and
maintenance of overhead and underground electric distribution equipment, along
with all associated hazards, may install, operate, and maintain the equipment covered
by this publication. A qualified person is someone who is trained and competent in:
• The skills and techniques necessary to distinguish exposed live parts from nonlive
parts of electrical equipment
• The skills and techniques necessary to determine the proper approach distances
corresponding to the voltages to which the qualified person will be exposed
• The proper use of special precautionary techniques, personal protective equipment,
insulated and shielding materials, and insulated tools for working on or near exposed
energized parts of electrical equipment
These instructions are intended ONLY for such qualified persons. They are not
intended to be a substitute for adequate training and experience in safety procedures
for this type of equipment.
Operating
Considerations
Circuit-making and circuit-breaking are involved in the normal operation of these
interrupter switches and, as a result, precautionary “partway” opening or closing is
undesirable. To operate manually, swing the operating handle through its full stroke
without hesitation. Do not assume the operating-handle position necessarily indicates
the
Open
or
Closed
position of the interrupter-switch blades. Upon completion of an
opening or closing operation, visually check the position of the interrupter-switch blades
to determine the intended position has been attained, then tag or padlock the operating
handle in accordance with standard system operating procedures. In all cases make
certain the operating handle is locked before “walking away.”
Note:
These interrupter switches are not intended for breaking fault currents.
If the switch is covered in ice or snow, do not “chop” the switch between the
Open
and
Closed
position to dislodge ice and snow. 14.4-kV and 25-kV Omni-Rupter Switches in
the upright and triangular configuration are capable of being opened and closed under
¾-inch (19-mm) ice formation. 14.4-kV and 25-kV switches in the inverted mounting con-
figuration have a ¾-inch (19-mm) ice-break capability with ice shields.
Read this
Instruction Sheet
NOTICE
Thoroughly and carefully read this instruction sheet and all materials included in
the product’s instruction handbook before installing or operating your Omni-Rupter
Switches. Familiarize yourself with the Safety Information and Safety Precautions on
pages 3 through 5. The latest version of this publication is available online in PDF
format at
sandc.com/en/support/product-literature/.
Retain this
Instruction Sheet
This instruction sheet is a permanent part of your Omni-Rupter Switch. Designate a
location where you can easily retrieve and refer to this publication.
