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Introduction - Siemens GMSG-GCB Instruction Manual

5 kv to 15 kv vacuum circuit breakers

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Introduction

Important
The types GMSG and GMSG-GCB vacuum
circuit breakers 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.
Throughout this instruction manual,
reference to the type GMSG circuit breaker
also includes the type GMSG-GCB variant
unless otherwise notes.
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.
Hazardous voltage and high-speed moving parts.
Will cause death, serious injury and property damage.
Always de-energize and ground the equipment before maintenance.
Maintenance should be performed only by qualified personnel. The
use of unauthorized parts in the repair of the equipment or by
tampering by unqualified personnel will result in dangerous conditions
that 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 instruction 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.
Caution (without safety alert symbol) -
Indicates a potentially hazardous situation
which, if not avoided, may result in property
damage.

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