Introduction - Siemens 3AH3 Instruction Manual

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Introduction

Introduction
The type 3AH3 and type 3AH-compact
(3AHc) families of vacuum circuit breaker
operator modules are designed to meet all
applicable ANSI, NEMA and IEEE standards.
Successful application and operation of this
equipment depends as much upon proper
installation and maintenance by the user as
it does upon the proper design and
fabrication by Siemens.
The purpose of this instruction manual is to
assist the user in developing safe and
efficient procedures for the installation,
maintenance and use of the equipment.
Contact the nearest Siemens representative
if any additional information is desired.
In this instruction manual, reference to type
3AH includes both type 3AH3 and type 3AHc
operator modules. When information
specific to the type 3AH-compact (3AHc)
design is involved, the text will so designate.
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 which will
cause death, severe injury or equipment damage. Follow all safety
instructions contained herein.
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 that, if not avoided, will result in
death or serious injury.
Warning - Indicates a potentially hazardous
situation that, if not avoided, could result in
death or serious injury.
Caution - Indicates a potentially hazardous
situation that, if not avoided, may result in
minor or moderate injury.
Caution (without safety alert symbol) -
Indicates a potentially hazardous situation
that, if not avoided, may result in property
damage.