Siemens 3AH Instalacja, obsługa i konserwacja - Strona 5
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Introduction and Safety
Introduction
The 3AH family of vacuum circuit breakers is designed to
meet all the applicable ANSI, NEMA and IEEE standards.
Successful application and operation of this equipment de-
pends as much upon proper installation and maintenance by
the user as it does upon the careful design and fabrication
by Siemens.
The purpose of this Instruction Manual is to assist the user
in developing safe and efficient procedures for the installa-
tion, maintenance and use of the equipment.
NOTE: IEEE Standards Requirements for Conversion of
Power Switchgear Equipment (C37.59); Siemens has devel-
oped instruction manuals for particular replacement circuit
breaker drawout vehicles, consult factory.
Contact the nearest Siemens representative if any additional
information is desired.
Hazardous voltages and high-speed
moving parts.
Will cause death, personal injury or
property damage.
Only qualified persons thoroughly familiar
with the equipment, instruction manuals and
drawings should install, operate and/or main-
tain this equipment.
Qualified Person
For the purpose of this manual a Qualified Person is one
who is familiar with the installation, construction or opera-
tion of the equipment and the hazards involved. In addition,
this person has the following qualifications:
• Training and authorization to energize, de-energize, clear,
ground and tag circuits and equipment in accordance
with established safety practices.
• Training in the proper care and use of protective equip-
ment such as rubber gloves, hard hat, safety glasses, face
shields, flash clothing, etc., in accordance with estab-
lished safety procedures.
• Training in rendering first aid.
Signal Words
The signal words "Danger" , "Warning" and "Caution" used
in this manual indicate the degree of hazard that may be
encountered by the user. These words are defined as:
Danger - Indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
injury.
Warning - Indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
Caution - indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury.
Dangerous Procedures
In addition to other procedures described in this manual as
dangerous, user personnel must adhere to the following:
1. Always work on de-energized equipment. Always de-ener-
gize a circuit breaker, and remove it from the switchgear
before performing any tests, maintenance or repair.
2. Always perform maintenance on the circuit breaker after
the spring-charged mechanisms are discharged.
3. Always let an interlock device or safety mechanism per-
form its function without forcing or defeating the device.
Field Service Operation
Siemens can provide competent, well-trained Field Service
Representatives to provide technical guidance and advisory
assistance for the installation, overhaul, repair and main-
tenance of Siemens equipment, processes and systems.
Contact regional service centers, sales offices or the factory
for details, or telephone Siemens Field Service at
1-800-241-4953.
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