2 S&C Instruction Sheet 765-500
Introduction
Operating
Considerations
Ç
CAUTION
The equipment covered by this publication must be selected for a specific applica-
tion and it must be installed, operated, and maintained by qualified persons who
are thoroughly trained and who understand any hazards that may be involved. This
publication is written only for such qualified persons and is not intended to be a
substitute for adequate training and experience in safety procedures for this type
of equipment.
In most applications, these interrupter switches are capable of switching rated continuous
load currents at full voltage. Consequently, no interlocking with secondary protective
equipment is required.
Circuit making and breaking is involved in the normal operation of these interrupter
switches and, as a result, precautionary “partway” opening or closing is undesirable.
To operate, swing the operating handle through its full stroke without hesitation. Do
not assume that 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 that
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 that
the operating handle is locked before “walking away.” Note: These interrupter switches
are not intended for breaking fault currents.
Qualified Persons
Ç
WARNING
The equipment covered by this publication must be installed, operated, and main-
tained by qualified persons who are knowledgeable in the installation, operation, and
maintenance of overhead electric power distribution equipment along with associated
hazards. A qualified person is one 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 voltage to which the qualified person will be exposed.
• The proper use of the special precautionary techniques, personal protective
equipment, insulating 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.
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