GE Industrial Solutions AKD-20 Low Voltage Switchgear - Manuel (Page 4)

AKD-20 Low Voltage Switchgear
Chapter 1. Introduction
4 ©2012 General Electric All Rights Reserved
1-1 General Information
This manual contains procedures for receiving, handling, storage,
equipment installation, operation, and maintenance and service of
AKD-20 Low Voltage Switchgear.
NOTE: The personnel responsible for installing, operating, and
servicing this equipment should be thoroughly familiar with the
contents of this manual.
NOTE: La ou les personnes responsables de l’installation,
l’opération et du service d’entretien de cet équipement devraient
être pleinement familiers en ce qui concerne le contenu de ce
manuel.
Before any installation work is performed, thoroughly read and
understand the material in this instruction manual and the drawings
furnished with the equipment. The documentation shipped with the
equipment includes the Summary, Front View, Elementary Diagram,
Connection Diagram and Instruction Book. This material is located in
a forward compartment tagged "INSTRUCTIONS IN THIS
COMPARTMENT." The documentation provides all of the information
necessary for installation of the switchgear. When requesting
information from the General Electric Company, include the complete
data appearing on the equipment nameplate, requisition number,
summary number, and elementary diagram number. The nameplate
is located in the lower left, front corner of the lineup.
When requesting information concerning any specific item furnished
with the switchgear, refer to that item by description, part number, its
location within this manual, and any applicable drawing number. Any
material external to the equipment, which may be required to meet
local codes (such as mats, screens, railings, etc.) , is not furnished by
the General Electric Company .
If there are any questions or requirements not covered in this manual
or in the accompanying drawings, please contact the local sales
office of the General Electric Company.
1-2 Instruction Book Arrangement
Information and procedures in this instruction book are divided into
Chapters as follows:
• Chapter 1, Introduction, gives a brief account of the
equipment's function and provides for general information, and
applicable data for the equipment and its components.
• Chapter 2, Receiving, Handling and Storage, describes
procedures required for receiving and handling the equipment
and how to prepare it for short- or long-term storage
• Chapter 3, Description, describes the AKD-20 Low Voltage
Switchgear and its various components. Included are the
section enclosure, breaker compartment, circuit breakers,
instrument panels and instrument compartments, bus bar
arrangement, incoming cable and busway, ground and neutral
bus, outdoor equipment, and auxiliary section. This section also
explains how the electrical and mechanical components perform
their assigned functions.
• Chapter 4, Equipment Installation, provides the information
needed prior to installation, site location and foundation
requirements, and how to anchor the equipment properly and
safely. It also covers installation of peripheral equipment and
includes information on electrical connections and mechanical
construction.
• Chapter 5, Installing and Removing Circuit Breakers, gives a
step-by-step procedure for lifting the breaker from the floor,
installing it on drawout rails, and moving it into the connected
position. A further procedure is given to withdraw a breaker,
remove it from the drawout rails, and lower it to the floor. Also
included is a description of the rejection system provided to
avoid the inadvertent use of an incorrect breaker in a breaker
compartment.
• Chapter 6, Testing and Inspection, reviews items which should
be tested or inspected prior to energizing and operating the
switchgear.
• Chapter 7, Operating the Switchgear, covers how to operate
the breakers, and contains information concerning draw-out
provisions, doors, and various accessories.
• Chapter 8, Energizing the Switchgear, outlines the steps to be
taken before and during the electrical energization of the
equipment.
• Chapter 9, Maintaining the Switchgear, provides instructions
for all preventive maintenance, servicing, and lubrication
information for the switchgear equipment. Included is service
and maintenance data for the circuit breakers, instrument
compartments, instruments, bus bar joints, and cable and
busway connections. This section also includes paint refinishing
requirements.
• Appendices A & B, contain information concerning screw and
bolt torque values & circuit breaker rejection features.