GE Industrial Solutions Entellisys Installation User Manual
DEH-237 R01
g
GE Entellisys™ Low Voltage
Switchgear
Installation and Maintenance Instructions
WARNINGS
CAUTIONS
NOTES
DEH237
WARNINGS, CAUTIONS, AND NOTES
AS USED IN THIS PUBLICATION
Warning notices are used in this publication to emphasize that hazardous voltages, currents, or
other conditions that could cause personal injury are present in this equipment or may be
associated with its use.
Warning notices are also used for situations in which inattention or lack of equipment knowledge
could cause either personal injury or damage to equipment.
Caution notices are used for situations in which equipment might be damaged if care is not taken.
Notes call attention to information that is especially significant to understanding and operating the
equipment.
This document is based on information available at the time of its publication. While efforts have
been made to ensure accuracy, the information contained herein does not cover all details or
variations in hardware and software, nor does it provide for every possible contingency in
connection with installation, operation, and maintenance. Features may be described herein that
are not present in all hardware and software systems. GE Consumer & Industrial assumes no
obligation of notice to holders of this document with respect to changes subsequently made.
GE Consumer & Industrial makes no representation or warranty, expressed, implied, or statutory,
with respect to, and assumes no responsibility for the accuracy, completeness, sufficiency, or
usefulness of the information contained herein. No warrantees of merchantability or fitness for
purpose shall apply.
The following are trademarks of GE Company:
EntelliGuard™, EntelliGuard Messenger™, Entellisys™
©Copyright 2005 GE Company
All Rights Reserved
Entellisys Low Voltage Switchgear
Table of Contents
Chapter 1. Introduction
1-1 General Information........................... 1
1-2 Instruction Book Arrangement.......... 1
1-3 Related Publications........................... 2
Chapter 2. Receiving, Handling, and
Storage
2-1 Receiving............................................. 3
Equipment Packages..................... 3
Inspecting for Damage.................. 3
Filing a Claim................................ 3
2-2 Handling ............................................. 4
Lifting ............................................ 4
Rollers............................................ 5
Forklifts ......................................... 5
Jacks ................................................ 6
2-3 Storage ..................................................7
Switchgear....................................... 7
Circuit Breakers.............................. 7
Chapter 3. Description
3-1 General.................................................. 8
3-2 Summary Description...........................8
3-3 Compartment Area.............................10
3-4 EntelliGuard Messenger....................10
3-5 Breaker Compartment ....................... 11
3-6 Circuit Breakers ................................. 16
EGS/EGH/EGX-08 Circuit Breaker16
EGF-08 Fused Circuit Breaker ...... 16
EGS/EGH-16 Circuit Breaker ........16
EGF-16 Fused Circuit Breaker ...... 16
EGS/EGF-20 Circuit Breaker.........16
EG-32 Circuit Breaker....................17
EG-40 Circuit Breaker....................17
EG-50 Circuit Breaker....................17
3-7 Fuse Rollout Elements.......................17
EGF-32 Rollout Carriage................17
EGF-40 Rollout Carriage................17
EGF-50 Rollout Carriage................17
3-8 Compartments for Future Breakers.. 18
3-9 Auxiliary/Transition Sections............18
3-10 Bus Area.............................................. 19
Busing System....................................19
Insulated/Isolated Bus System..........20
3-11 Feeder Cable and Busway
Compartment......................................22
3-12 Ground Bus......................................... 23
Chapter 4. Equipment Installation
4-1 General................................................ 24
Site Location..................................24
Foundation Requirements............24
Foundation Preparation................24
4-2 Assembly and Installation of Switchgear
Equipment ............................................27
General Requirements....................27
Detailed Assembly and Installation
Instructions ..........................................27
Anchoring Switchgear Equipment.33
Busway Connections............................ 35
Control Wire Connections.................... 35
Power Cable Connections .................... 36
Breaker Hoist....................................... 37
Final Inspection ................................... 38
4-3 Installation of Wall-Mount HMI ........ 39
General Requirements......................... 39
Enclosure Installation ......................... 39
Device Wiring....................................... 39
Chapter 5. Installing and Removing
Circuit Breakers
5-1 General................................................. 41
Inspection and Preparation of
Circuit Breakers................................... 41
Circuit Breaker Installation................ 41
Rejection Feature................................. 41
5-2 Installing EG-08/16/20
Circuit Breakers................................... 42
Prior to Installation ............................. 42
Installation Procedures........................ 42
5-3 Installing EG-32/40/50
Circuit Breakers................................... 45
5-4 Removing the EGS-08/16/20
Circuit Breakers................................... 46
5-5 Removing the EGH-32, EGS-32/40/50
Circuit Breakers .................................. 46
5-6 Installing and Removing EGF-08/16
Fused Circuit Breakers ....................... 46
5-7 Installing Fuses in EGF-08/16 Circuit
Breakers .............................................. 47
5-8 Installing and Removing Fuse Rollout
Elements (FRE) 30 and 38-inch Wide
Compartments...................................... 49
Chapter 6. Testing and Inspection
6-1 General ............................................... 51
6-2 Key Interlocks..................................... 51
6-3 Breaker Operation Test ..................... 51
6-4 Entellisys System Test Kit ................ 51
6-5 Final Steps to Be Taken Before
Energizing Equipment....................... 52
i
Entellisys Low Voltage Switchgear
Table of Contents
Chapter 7. Operating the Switchgear
7-1 Circuit Breaker Operation .................53
General.........................................53
Manually Operated Breakers .....53
Closing Manually Operated
EntelliGuard Circuit Breakers .53
Opening Manually Operated
EntelliGuard Circuit Breakers .53
Electrically Operated Breakers .. 53
Electrically Opening EntelliGuard
Breakers.......................................53
7-2 Circuit Breaker Drawout Operation..53
Breaker Positions........................53
Drawout Operation......................54
7-3 Front Doors......................................... 54
Operation.....................................54
Removal and Installation............54
Door Removal...........................54
Door Installation......................54
7-4 Entellisys Switchgear Accessories.....55
Future Circuit Breaker
Compartments............................. 55
Circuit Breaker Key Interlock ....55
General.....................................55
Key Interlock Operation Check55
Test and Disconnect Padlock
Device...........................................55
General.....................................55
Padlocking the EG-08/16/20
Breakers...................................56
Padlocking the EG-32/40/50
Breakers & EG-32/40/50 FRE.56
Padlocking the EG-08/16/20,
EG-32/40/50 & EG-32/40/50
FRE Compartments.................56
Installing and Removing
Current Transformers ............. 56
Removing Shutter Units .............57
Removing a EG-08/16/20
Shutter Unit.............................58
Removing a EG-32/40/50 or
Fuse Rollout Shutter Unit....... 58
Installing a Shutter Unit............59
Installing a EG-08/16/20
Shutter Unit.............................59
Installing a EG-32/40/50 Fuse
Rollout Shutter Unit................59
Chapter 8. Energizing the Switchgear
8-1 Before Energizing............................... 60
8-2 Energizing Procedures ....................... 60
Chapter 9. Maintaining the Switchgear
9-1 Maintenance Requirements............... 61
General ........................................ 61
9-2 Breaker and Instrument
Compartments.................................... 61
Breakers ...................................... 61
Test for Proper Operation ....... 61
Checks after Breaker is De-
energized.................................. 61
Lubrication............................... 62
Entellisys Instrumentation and
Instrument Transformers ....... 62
Breaker Compartment Interiors 62
9-3 Bus Area ............................................. 62
9-4 Cable and Busway Compartment...... 62
9-5 Overall Switchgear............................. 63
9-6 Paint Refinishing ............................... 63
9-7 Circuit Breaker Lifting Mechanism.. 63
Appendices
A. Torque Values..................................... 65
B. Circuit Breaker Rejection Features... 66
C. Circuit Breaker Ratings..................... 70
D. Circuit Breaker Accessory Devices.... 71
E. Circuit Breaker Weights.................... 73
F. Circuit Breaker Repetitive Duty
Data..................................................... 73
G. Fuses for EGF-08/16 and FRE
Elements............................................. 74
These instructions do not purport to cover all details or
variations in equipment or to provide for every possible
contingency to be met in connection with installation,
operation or maintenance. Should further information be
desired or should particular problems arise which are not
covered sufficiently for the Purchaser's purposes, the
matter should be referred to the General Electric
Company. These instructions are intended for use by
qualified personnel only.
ii
Entellisys Low Voltage Switchgear
Chapter 1. Introduction
1-1 General Information
This manual contains procedures for receiving, handling,
storage, equipment installation, operation, maintenance, and
service of Entellisys 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 longterm storage.
• Chapter 3, Description, describes the Entellisys 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, 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
that 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 through F, contain information
concerning screw and bolt torque values, circuit breaker
ratings, rejection features, accessory device ratings,
repetitive duty data, and fuse data.
1
Entellisys Low Voltage Switchgear
Chapter 1. Introduction
1-3 Related Publications
Service and maintenance publications are supplied
separately for circuit breakers and Entellisys
instrumentation not described in this instruction book.
In addition to instruction books, the following drawings will
be supplied as required for each order of Entellisys
switchgear equipment:
1. General arrangement drawings, including front view
and floor plan.
2. Elementary and connection drawings (or wiring routing
tables) which identify test and connection points
including terminal blocks, device studs, switch contact
developments, and remote connections.
3. Summary of all the components furnished with the
switchgear, including the breakers, identified by catalog
number.
These are all documents necessary to install, operate, and
maintain the equipment. One complete set of drawings and
select instruction books are shipped with the equipment.
Fig. 1-1. General Electric Entellisys Low Voltage Switchgear
2
Entellisys Low Voltage Switchgear
Chapter 2. Receiving, Handling, and Storage
2-1 Receiving
Equipment Packages
Every package leaving the factory is plainly marked with the
shop order number, requisition number, and customer's order
number. If the equipment has been split for shipment, the
section numbers of the equipment enclosed in each shipping
package are identified.
NOTE: To avoid the loss of any parts when unpacking,
the contents of each container should be carefully checked
against the packing list before discarding the packing
material.
NOTE: Le contenu de chaque conteneur devrait être
soigneusement vérifié avec la liste d’emballage avant de
décharger le matériel empaqueté, ceci dans le but d’éviter
la perte de pièces lors du déballage.
The contents of each shipping package are listed on the
Master Packing List. In addition, this list includes the
number of the shipping crate in which miscellaneous parts
needed to install and operate the equipment (such as
hardware, contact lubricant, touch-up paint, breaker closing
devices, etc.) are located. Normally, such devices are packed
in a cardboard carton and the carton secured in an empty
switchgear compartment. See Fig. 2-1. If such items are
packed in a switchgear section instead of a separate crate,
the list will indicate the appropriate section number in which
they are stored. Large items (such as hoist dollies and hoist
carriages used with indoor equipment) will always be shipped
in separate crates or cartons. See Fig. 2-2.
Inspecting for Damage
All equipment leaving the factory is carefully inspected and
packed by personnel experienced in the proper handling and
packing of electrical equipment. Upon receipt of any
equipment, immediately perform a visual inspection to
ascertain if any damage has been sustained in shipping or if
there are any loose parts.
Circuit breakers may be shipped separately in individual
containers with the breaker in the open position. Circuit
breakers should be unpacked and visually inspected for
damage or loose parts as soon as possible after they have
been received.
Be sure to inspect all devices mounted or packed inside
compartments of each section to see if any have been
dislodged or damaged.
Filing a Claim
If any damage is evident, or indication of rough handling is
visible, file a claim for damage at once with the
transportation company and notify the nearest General
Electric Company Sales Office immediately. Information on
damaged parts, part number, case number, requisition
number, etc., should accompany the claim.
1
2
3
1. Spare compartment
2. Carton containing loose material
3. Shipping label listing contents of carton
Fig. 2-1. Packaging of loose material for shipment
Fig. 2-2. Carton containing breaker lifting device
3
Entellisys Low Voltage Switchgear
Chapter 2. Receiving, Handling, and Storage
2-2 Handling
NOTE: It is preferable to leave the shipping skids in
place under the switchgear until it reaches its final
location. The equipment should be installed in its final
location prior to installing the circuit breakers.
NOTE: Il est préférable de laisser l’emballage
d’expédition en place sous le dispositif de commutation
jusqu’à ce qu’il atteigne son emplacement final.
L’équipement devrait être installé à son emplacement
final avant que ne soient installés les disjoncteur.
Lifting
The switchgear sections are best handled by lifting with a
crane as shown in Fig. 2-3. Removable lifting plates are
provided, as standard equipment, on the top of each
switchgear shipping section. To preserve the external
appearance of the equipment, it is suggested that the lifting
plates be left in place except where adjacent equipments
must be bolted together, i.e. shipping splits, etc.
Utilize four equal length cables and an overhead crane, each
with a minimum load rating of twice the weight of the
switchgear. Estimated weights for shipping splits appear on
the Front View drawings.
Example: Switchgear Section Weight = 5,000 pounds. The
crane and the four lift cables must have a minimum load
lifting capacity of 10,000 pounds.
NOTE: The angle between the cables and the top of the
equipment must be at least 45 degrees. If this is not
possible because of lack of headspace, spreader bars must
be used. Also, lift cables with greater load capability may
be necessary, depending upon the angle between the
cables and the crane hook.
NOTE: Il faut que l’angle entre les câbles et le haut de
l’équipement soit d’au moins 45 degrés. Si cela est
impossible à cause d’une insuffisance d’espace de
dégagement, il faut utiliser des barres d’extension. Il se
peut aussi que des câbles de levage ayant une capacité de
poids supérieure soient nécessaires dépendant de l’angle
entre les câbles et le crochet de la grue.
Connect a cable from the crane to the four lifting plates
located on the top-front and rear of the switchgear (Fig. 2-3).
WARNING ADVERTISSEMENT
WHEN LIFTING THIS
EQUIPMENT, USE LIFTING
HOLES PROVIDED. ANGLE
OF SLING MUST NOT BE
LESS THAN 45 DEGREES. IF
HEAD SPACE IS
INSUFFICIENT, USE A
SPREADER BAR.
Lorsque cet équipement
est levé, il faut utiliser les
trous de levage qui sont
fournis. Il ne fuat pas que
l’angle d’élinguje soit de
moins de 45 degrés.
Si l’espace de dégagement
est insuffisant utiliser une
barre d’écartement.
THIS LABEL IS LOCATED
ON EACH CORNER BY
THE LIFTING HOLE
Fig. 2-3. Recommended method of lifting Entellisys enclosure
4
Entellisys Low Voltage Switchgear
Chapter 2. Receiving, Handling, and Storage
Take up the slack in the lifting device very carefully and
manually stabilize the switchgear to prevent it from rotating.
WARNING: Do not stand under switchgear while it is
being moved. Serious injury may occur if the cables or
lifting device fail.
AVERTISSEMENT: Ne vous tenez pas sous le dispositif
de commutation lorsqu’il est bougé. Des blessures graves
peuvent survenir si les câbles ou l’appareil de levage
tombent en panne.
CAUTION: Gently lower the switchgear section onto the
level site location. If the switchgear is roughly handled or
jarred, it is possible to damage or misalign internal
components.
ATTENTION: Abaisser doucement la section du
dispositif de commutation sur l’endroit d’installation
nivelé. Une détérioration ou un désenlignement des
composantes internes sont possibles si le dispositif de
commutation est manipulé grossièrement ou soumis à des
vibrations.
Rollers
If crane facilities are not available, the equipment may be
moved into position by means of construction rollers placed
under the shipping skids. The switchgear may be raised
enough for the placement of rollers by means of a forklift or
jack.
There should never be less than four rollers under the
equipment unless the line-up is less than five feet long. Use
one roller for each 18 inches of equipment length.
Forklifts
When using a forklift to raise the line-up to position rollers
underneath, proceed as follows:
1. Expand forklift tines to their maximum (widest)
extension.
2. Carefully insert tines of forklift below one side of the
switchgear line-up at the approximate center of the
panel as shown in Fig. 2-4.
NOTE: Do not attempt to lift or move the equipment with
a forklift positioned in the front or rear of the equipment.
NOTE: Ne pas essayer de lever ou bouger cette pièce
d’équipement à l’aide d’un chariot élévateur placé à l’avant
ou à l’amère de celle-ci.
3. Raise equipment and position one roller under the skids
close to the raised end of the line-up.
4. Carefully lower the gear until it rests on the roller as
shown in Fig. 2-5.
5. Repeat the lifting process at the other end and place the
appropriate number of rollers under the skids spacing
them evenly across the width of the line-up.
Fig. 2-4. Placing forklift tines under Entellisys
equipment shipping skid
Fig. 2-5. Placement of rollers under shipping skid
6. Carefully lower the gear until it rests on the rollers
(Fig. 2-6).
NOTE: If shipping skids are removed prior to final
placement of equipment, rollers may only be used to move
the equipment in a direction parallel to the front.
NOTE: Si l’emballage d’expédition a été enlevé avant que
l’équipement ne soit rendu à son emplacement final,
l’utilisation de rouleaux pour bouger l’équipement n’est
permise qu’en direction parallèle à l’avant.
5
Entellisys Low Voltage Switchgear
Chapter 2. Receiving, Handling, and Storage
Fig. 2-6. Method of rolling equipment into place
7. While carefully pushing the switchgear to its final site
position, the rollers that are freed from the rear of the
switchgear are then repositioned at the forward end.
This procedure should be continued until the
switchgear is in its final location. See Fig. 2-6.
8. When the switchgear is in its final position, remove all
lag bolts holding the shipping skids to the switchgear
line-up.
9. Insert the tines of the forklift at one end of the line-up,
raise slightly, and remove the loose rollers.
10. Lower the end of the gear carefully to the floor.
11. Raise the other end of the line-up slightly and remove
the remaining roller at that end.
Jacks
Jacks may be used in place of forklifts to raise and lower
switchgear.
1. Place a jack under the front and rear corners of one end
of the line-up.
CAUTION: Do not place jacks in any other location other
than the front and rear corners of the switchgear. Doing so
may result in serious damage to the switchgear equipment.
ATTENTION: Il ne faut pas placer de vérins en aucun
endroit autre que les coins avants et arrières du dispositif
de commutation. L’équipement peut être sérieusement
endommagé si l’on ne respecte pas cette directive.
2. Raise the switchgear evenly and just enough to position
a roller beneath the equipment. Gently lower the
switchgear onto the roller. Repeat the procedure at the
opposite end of the switchgear, raising the gear far
enough to place the appropriate number of rollers under
the skids, spacing them evenly across the width of the
line-up. Gently lower the gear onto the rollers.
3. While carefully pushing the switchgear to its final site
position, the rollers that are freed from the rear of the
switchgear are then repositioned at the forward end.
This procedure should be continued until the switchgear
is in its final location.
4. When the switchgear is in its final position, remove all
lag bolts holding the shipping skids to the switchgear
line-up.
5. Place one jack at each corner, front and rear, of the
switchgear. Carefully raise the line-up evenly and
remove the rollers and the shipping skids. Evenly lower
the line-up to the floor and remove the jacks.
6
Entellisys Low Voltage Switchgear
Chapter 2. Receiving, Handling, and Storage
2-3 Storage
Switchgear
If it is necessary to store the switchgear equipment for any
length of time, the following precautions should be taken to
prevent corrosion or deterioration.
1. Remove protective covering. Check thoroughly for
damage.
2. Store in a clean, dry, rodent-free location with moderate
temperature and provide protective coverings to prevent
dirt, water, or other foreign substances from entering
the switchgear.
CAUTION: Remove all cartons, containers and any other
miscellaneous packaging and packing material from inside
the switchgear sections before energizing any internal
heaters. To prevent fire, remove any plastic or polyethylene
shrouding from the switchgear sections before energizing
any internal heaters.
ATTENTION: Enlever tous les cartons, contenants et tout
autre objet varié servant à l’emballage et au matériel
d’emballage de l’intérieur des sections du dispositif de
commutation avant de procéder à la mise sous tension de
tout radiateur interne. Pour éviter un incendie, enlever tout
résidu de plastique ou de polyéthylène des sections du
dispositif de commutation avant de procéder à la mise sous
tension de tous les radiateurs internes.
3. If dampness or condensation may be encountered in the
storage location, heaters must be placed inside the
switchgear sections to prevent moisture damage.
Approximately 250 watts of heat in each section is
required. Incandescent lamps may be used for this
purpose. These lamps should be located in the bottom
breaker compartment of each section and supported so
the bulbs will not touch adjacent materials.
CAUTION: If the space heaters are to be temporarily
energized from an external source, it is important to
remove the fuses on the secondary side of the control
power transformer. This precaution is to prevent a feed
back of higher voltage to other portions of the equipment
through the CPT primary.
ATTENTION: Il est important de retirer les fusibles du
côté secondaire du contrôle du pouvoir du transformateur
si les espaces des radiateurs doivent être temporairement
mis sous tension par une source externe. Cette précaution
prévient une rétroaction d’un voltage supérieur à d’autres
portions de l’équipement par le contrôle de pouvoir du
transformateur primaire.
Circuit Breakers
If circuit breakers are not to be placed into service at once,
remove them from their shipping cartons and thoroughly
inspect them for damage. If the breakers are in satisfactory
condition, replace the breakers in their shipping cartons for
storage. Do not remove the circuit breaker shipping members
at this time.
Store the circuit breakers in a clean, dry location in an
upright position. They must be properly supported to
prevent bending of the studs or damage to any of the breaker
parts. Do not remove any protective grease until the circuit
breakers are ready to be installed. A plastic or canvas-type
cover should be provided to reduce the possibility of damage
to the breakers due to dust and water.
7
Entellisys Low Voltage Switchgear
Chapter 3. Description
3-1 General
This section contains a description of the General Electric
Entellisys Low Voltage Switchgear. It also describes the
functions of the electrical and mechanical systems.
Fig. 3-1 is a side view of a typical section showing
compartmentalization.
3-2 Summary Description
General Electric Entellisys Low Voltage Switchgear is a
freestanding assembly of metal-enclosed sections containing
low-voltage power circuit breakers, bus bars, cable
termination provisions, and Entellisys instrumentation. It
may also be an integral part of a load center unit substation,
either single-ended or double-ended.
Fig. 3-1. Side-view of Entellisys Switchgear
8
Entellisys Low Voltage Switchgear
Chapter 3. Description
All of the primary circuit switching and protective devices,
Entellisys instrumentation, control fuses, and instrument
transformers are mounted in the enclosure. The breaker
compartments include drawout rails, stationary breaker
contacts, interlocks, and EntelliGuard Messengers. The
breakers are provided with self-aligning primary and
secondary disconnect contacts and a breaker mechanism
locking unit. The individual sections, compartments, and
devices are described in the following paragraphs.
Fig. 3-2 is an outline of a typical single-ended load center
unit substation illustrating the nomenclature used for all
equipment.
Fig. 3-2. Outline of a typical Entellisys Load Center Unit Substation
9
Entellisys Low Voltage Switchgear
Chapter 3. Description
3-3 Front Compartment Area
The front enclosure of each section is divided into individual
compartments. These compartments typically house
EntelliGuard low voltage power circuit breakers or Entellisys
instrumentation.
3-4 EntelliGuard Messenger
An EntelliGuard Messenger is mounted above each
EntelliGuard breaker. The Messenger provides an interface
between the breaker, the compartment, and the central
Entellisys system. See DEH-231 (Entellisys Low Voltage
Switchgear System User’s Manual) for further instructions.
Each Entellisys low voltage switchgear lineup contains
standard devices housed within the instrument
compartments. Two CPUs (Central Processing Units) provide
the processing capability to support all switchgear functions.
At least one HMI (Human-Machine Interface) provides user
access to the Entellisys system. Network switches provide
communication links between the CPU, the HMI, the
EntelliGuard Messengers, and the external world. A pair of
uninterruptible power supplies (UPSs) and control power
throwover relays supply highly reliable control power to these
system devices.
Fig. 3-3. EntelliGuard Messenger
10
Entellisys Low Voltage Switchgear
Chapter 3. Description
3-5 Breaker Compartment
Closed-door drawout circuit breaker compartments, Fig. 34, are standard construction with all Entellisys switchgear
equipment. The circuit breaker compartment doors
remain closed and latched while the breaker is racked out
from the connected position, through test, to the
disconnected position.
Breaker compartment doors do not have any ventilation
slots, thus protecting operators from hot ionized gases
2
that may be vented by the breaker during circuit
interruption.
Additionally, the breaker compartment, Fig. 3-5, is enclosed
by grounded steel barriers on the top, sides, bottom, and
front. In the back, a flame-retardant, track resistant, glassfilled polyester base minimizes the possibility of fault
communication between compartments or to the bus.
1
1. Compartment door
2. Access port to racking mechanism
3. Breaker position indicator
4. Circuit breaker escutcheon
5. EntelliGuard Messenger
Fig. 3-4. EntelliGuard circuit breaker compartments
3
4
5
11
Entellisys Low Voltage Switchgear
Chapter 3. Description
9
1
5
4
6
7 7
1. Side barrier 6. Primary disconnects -- load
2. Bottom barrier 7. Drawout rails
3. Rear base/barrier 8. Racking anchor pins
4. Primary disconnects – line 9. Secondary Disconnect
5. Current Transformers
Fig. 3-5 Circuit breaker compartment (22-inch)
8
3
2
12
Entellisys Low Voltage Switchgear
Chapter 3. Description
Fuses for the charge, close, and trip circuits of electrically
operated breakers are mounted in the upper left corner of the
breaker compartment behind the door. Fuses for the set and
reset coils of the optional Network Interlock breaker
accessory are mounted in the upper right corner of the
compartment.
Primary disconnect shutters are available as options to
provide protection against contact with the energized
stationary primary disconnects when the breaker is removed
from its compartment. Shutters are supplied as standard
components in the source (main, generator) and tie breaker
compartments of multi-source lineups. The shutters are
constructed from glass-reinforced polyester insulating
material.
1
2
5
Fig. 3-6. Circuit breaker compartment (30-inch wide) with shutters
NOTE: If a fuse rollout (FRE) carriage is used with an
EGF-32/40/50 circuit breaker whose compartment is
equipped with shutters, the FRE compartment will also be
equipped with shutters.
NOTE: Si on utilise un chariot porte-fusibles à roulettes
avec un disjoncteur EGS-32/40/50 dont les compartiments
sont munis de volets, le compartiment du porte-fusible à
roulettes sera aussimuni de volets.
The combination of the stationary and movable portions of
the shutters prevent frontal access to the primary disconnect
line and load power stabs.
1. Stationary barrier
2. Shutters (retractable barrier)
3. Operating lever
4. Operating lever springs
6
5. Drawout rails
6. Racking anchor pins
4
3
13
Entellisys Low Voltage Switchgear
Chapter 3. Description
The shutters are partially retracted when the breaker is in
the Disconnect Position. As the circuit breaker is racked from
the Disconnect Position to the Test Position, the rear of the
circuit breaker frame depresses the shutter operating lever
(3) to cause the shutters to fully retract. The operating lever
springs (4) cause the operating lever (3) to remain in contact
with the circuit breaker frame during operation. As the
breaker is racked from the Test Position to the Connected
Position, the shutters remain fully retracted.
Fig. 3-7 also shows the shutter assembly with the shutters
manually retracted to show the location of the primary
disconnect stabs (5) behind the shutter assembly.
1
2
Circuit breakers mounted in 22-inch wide compartments
(EG-08, EG-16, EG-20) are supported on drawout rails (7),
Fig. 3-5. Larger EG-32 and EG-40 circuit breakers and fuse
rollout carriages are installed in 30-inch wide compartments
and are supported on drawout rails (5), Fig. 3-6. The EG-50
circuit breaker is installed in a 38-inch wide compartment
and is supported on drawout rails (similar to Item 5, Fig. 3-
6).
5
4
1. Stationary barrier
2. Shutters (not visible in
retracted position)
3. Operating lever
4. Operating lever springs
5. Primary disconnect stabs
3
Fig. 3-7. Entellisys primary disconnect shutter assembly (30-inch wide compartment).
Shutters manually retracted
14
Entellisys Low Voltage Switchgear
2 3
Chapter 3. Description
2
1
1
1. Racking arm
2. Drawout interlock
Fig. 3-8. EGX-08 circuit breaker
EntelliGuard breakers do not contain current transformers.
Instead, current transformers are mounted over the primary
disconnect stabs of all Entellisys breaker compartments.
Primary disconnects are equipped with short-circuit braces
when breakers are fused or when extra-deep breaker
compartments are used.
The breaker racking arm slots engage fixed racking anchor
pins (6), Fig. 3-6, mounted in the breaker compartment. As
the racking arms are rotated by operation of the breaker
racking crank, the breaker is pulled into the compartment,
and locked in its final connected position.
A breaker should always be OPEN when it is moved into or
out of the CONNECTED position. As a safeguard, the
drawout interlock (2), Fig. 3-8, will cause the breaker to open
before the primary disconnects lose contact if a closed
breaker is moved out of the CONNECTED position.
EntelliGuard circuit breakers having higher continuous or
interrupting current ratings may be substituted for those
having lesser ratings. The compartment, however, retains the
factory-configured ratings and protection settings.
Substitution of manual for electric or electric for manual
EntelliGuard breakers is not recommended.
1. Racking arm
2. Secondary disconnects
3. Racking screw
Fig. 3-9. EGS-40 circuit breaker
Each breaker compartment has four positions as described
below:
1. CONNECTED POSITION-The breaker is in operating
position, both primary and secondary contacts made,
and the door closed.
2. TEST POSITION-The secondary contacts are made, but
the primary contacts are not made. Any breaker test
that requires control power may be made in this
position.
3. DISCONNECTED POSITION-All primary power and
secondary control electrical circuits between the breaker
and the equipment are disconnected. The door may be
closed. The breaker may be stored in this position with
the door closed.
4. WITHDRAWN POSITION-The breaker is completely
out of its compartment ready for removal from the
equipment. The door must be open. The optional
primary disconnect shutters, positioned in front of the
primary stabs, would be closed with the breaker in the
WITHDRAWN position.
15
Entellisys Low Voltage Switchgear
Chapter 3. Description
Movement of the breaker between the CONNECTED, TEST,
and DISCONNECTED positions is performed by the use of a
racking crank that engages the racking mechanism mounted
on the breaker. Movement to the WITHDRAWN position is
manually performed after opening the compartment door.
These positions are illustrated and described more fully in
Chapter 5 of this instruction book.
CAUTION: The door should not be opened when the circuit
breaker is closed and in the CONNECTED position.
Although the breaker compartment door may be opened in
any position, it is recommended that the door only be
opened when the breaker is in the DISCONNECTED or
WITHDRAWN position.
ATTENTION: Il ne faut pas que la porte soit ouverte
lorsque le disjoncteur est fermé et branché. Bien que la
porte du compartiment du disjoncteur puisse être ouverte
lorsque le disjoncteur est en n’importe quelle position, il
est préférable que la porte ne soit ouverte que lorsque le
disjoncteur est en position débranchée ou retirée.
3-6 Circuit Breakers
The General Electric EntelliGuard Low Voltage Power
Circuit Breaker includes spring-operated, stored energy, close
and trip mechanisms for either manual or electrical
operation.
Six General Electric EntelliGuard Circuit Breakers form
the complete family of breakers used in the Entellisys
switchgear. These circuit breakers range from 800 to 5000
ampere frame sizes and are built with the following ratings
and characteristics:
EGS/EGH/EGX-08 Circuit Breaker
• 800-ampere frame size
• Standard 30,000-ampere interrupting and short-time
capability (480 volts)
• Four-high stacking, 22-inch wide sections
• Increased IC and short-time rating 42,000 amperes
(EGH-08) or 65,000 amperes (EGX-08) at 480 volts
EGF-08 Fused Circuit Breaker
• 800-ampere frame size
• 300- through 1600-ampere integral fusing
• 200,000-ampere interrupting rating
• Four-high stacking, 22-inch wide sections
EGS/EGH-16 Circuit Breaker
• 1600-ampere frame size
• Standard 50,000-ampere interrupting and short-time
capability at 480 volts
• Four-high stacking, 22-inch wide sections
• Increased IC and short time rating 65,000-ampere at 480
volts (EGH-16)
Fig. 3-10. EGX-08 circuit breaker (electrically operated)
EGF-16 Fused Circuit Breaker
• 1600-ampere frame size
• 450- through 2500-ampere integral fusing
• 200,000-ampere interrupting rating
• Four-high stacking, 22-inch wide sections
EGS/EGF-20 Circuit Breaker
• 2000-ampere frame size
• Standard 65,000-ampere interrupting and short-time
capability at 480 volts
• 200,000-ampere interrupting rating
• Three-high stacking, 22-inch wide sections (See DET-
447)
16
Entellisys Low Voltage Switchgear
Chapter 3. Description
EGS/EGH/EGX/EGF -32 Circuit Breaker
• 3200-ampere frame size
• Standard 65,000-ampere interrupting and short-time
capability at 480 volts
• 30-inch wide sections, Two-high stacking in 38-inch wide
sections
• Increased IC and short-time rating 85,000 amperes
(EGH-32) or 100,000 amperes (EGX-32) at 480 volts.
EGS/EGX/EGF -40 Circuit Breaker
• 4000-ampere frame size
• Standard 85,000-ampere interrupting and short-time
capability at 480 volts
• 30-inch wide sections, Two-high stacking in 38-inch wide
sections
• Increased IC and short-time rating 100,000 amperes
(EGX-40) at 480 volts.
EGF-32 Rollout Carriage
• 3200-ampere rating
• 200,000-ampere interrupting rating
• Accepts 2000- through 4000-ampere fusing
• Also used for EGF-20 breaker
EGF-40 Rollout Carriage
• 4000-ampere frame size
• 200,000-ampere interrupting rating
• Accepts 2000- through 5000-ampere fusing
EGF-50 Rollout Carriage
• 5000-ampere frame size
• 200,000-ampere interrupting rating
• Accepts 2000- through 5000-ampere fusing
Fig. 3-11. EGS-32 circuit breaker (electrically operated)
EGS/EGX/EGF -50 Circuit Breaker
• 5000-ampere frame size, fan cooled
• Standard 85,000-ampere interrupting and short-time
capability at 480 volts
• One-high stacking, 38-inch wide sections
• Increased IC and short-time rating 100,000 amperes
(EGX-50) at 480 volts.”
3-7 Fuse Rollout Elements
When the system available short-circuit current exceeds the
unfused breaker ratings, current-limiting fuses can be used
in series with EGF-20, EGF-32, EGF-40, and EGF-50
breakers to increase the short-circuit rating of the
combination to 200,000 amps. When used, such fuses are
housed in a separate drawout compartment located adjacent
to the breaker compartment; they are mounted on a drawout
carriage similar to a breaker frame and referred to as a fuse
rollout element (FRE).
1. Protective hinged screen
2. Racking mechanism
3. Fuses
4. Secondary disconnects
Fig. 3-12. Fuse roll-out carriage
17
Entellisys Low Voltage Switchgear
2 1
Chapter 3. Description
3
1. Quarter-turn latch
2. Steel plate (future breaker cubicle)
Fig. 3-13. Future breaker compartment
3-8 Compartments for Future
Breakers
When specified, compartments may be supplied for future
addition of circuit breaker elements. These compartments
are fully equipped with drawout rails, primary
disconnects, and ancillary devices as required (i.e.
secondary disconnects, accessory devices, etc.) The
opening in the breaker compartment door (3), Fig. 3-13, is
closed with a bolted-on steel plate (2) to deter accidental
contact with energized electrical circuits. (I.e. primary
disconnect stabs).
3. Compartment door
3-9 Auxiliary/Transition Sections
Sections may be provided for any one or more of several
reasons including:
• Transition to a close-coupled transformer
• Incoming cable or busway when a main breaker
section is not provided
Auxiliary sections may be 22-inch, 30-inch, or 38-inch
wide as required to accommodate the space requirements.
The compartment doors on the front of the sections are
hinged and latched in the same manner as breaker
compartment doors.
Generally, transition sections will be 22-inches wide for
close-coupling to transformers.
Power company metering requirements generally require
either a 38-inch or 49-inch wide auxiliary section to
accommodate the current transformers, meters, test
switches, etc. as required by their individual practices,
tariff schedules, and/or regulatory commissions.
18
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