Hazardous voltages and high speed moving parts.
Will cause death, serious injury or property damage.
Always de-energize and ground the equipment before maintenance.
Read and understand this instruction manual before using equipment.
Maintenance should be performed only by qualified personnel. The
use of unauthorized parts in the repair of the equipment or tampering
by unqualified personnel will result in dangerous conditions that will
cause death, severe injury or equipment damage. Follow all safety
instructions contained herein.
Hookstick disconnect switches (types SE, SEL, SER, LER, E, EF, B-1, B-2, EH, EHL, and EHTT) Instruction Manual
2
Important
The information contained herein is general in nature and not intended for specific application
purposes. It does not relieve the user of responsibility to use sound practices in application,
installation, operation, and maintenance of the equipment purchased. Siemens reserves the right
to make changes in the specifications shown herein or to make improvements at any time without
notice or obligation. Should a conflict arise between the general information contained in this
publication and the contents of drawings or supplementary material or both, the latter shall take
precedence.
Qualified person
For the purpose of this instruction manual a qualified person is one who has demonstrated skills
and knowledge related to the installation, construction, and operation of the equipment and the
hazards involved. In addition, this person has the following qualifications:
• Is trained and authorized to de-energize, clear, ground and tag circuits and equipment in
accordance with established safety procedures.
• Is trained in the proper care and use of protective equipment, such as: rubber gloves, hard hat,
safety glasses or face shields, flash clothing, etc. in accordance with established safety
practices.
• Is trained in rendering first aid.
Further, a qualified person shall also be familiar with the proper use of special precautionary
techniques, personal protective equipment, insulation and shielding materials, and insulated tools
and test equipment. Such persons are permitted to work within limited approach of exposed live
parts operative at 50 volts or more, and shall, at a minimum, be additionally trained in all of the
following:
• The skills and techniques necessary to distinguish exposed energized parts from other parts of
electric equipment.
• The skills and techniques necessary to determine the nominal voltage of exposed live parts.
• The approach distances specified in NFPA 70E® and the corresponding voltages to which the
qualified person will be exposed.
• The decision-making process necessary to determine the degree and extent of the hazard and
the personal protective equipment and job planning necessary to perform the task safely.
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