GE Digital Energy SG Series User manual

g GE
SGT5000_030-040_UPS_GE_01
SG Series 10, 20, 30 and 40 kVA
INSTALLATION GUIDE
UNINTERRUPTIBLE POWER SUPPLY
Digital Energy TM
SG Series
10 – 20 – 30 – 40 kVA
Series 0
g
General Electric Company
2500 Discovery Blvd.
Rockwall, TX 75032
Telephone: [phone]
Fax: [phone]
SG Series UPS Technology for the digital world

g GE
OPM_SGS_ISG_10K_40K_0US_V010.doc 2/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Model: SG Series 10, 20, 30 and 40 kVA / Series 0
Date of issue: 04/15/2003
File name: OPM_SGS_ISG_10K_40K_0US_V010
Revision: 1.0
Author: Raimondo Bizzozero
Identification No.:
Up-dating
Revision Concern Date
COPYRIGHT © 2003 by GE
All rights reserved.
The information contained in this publication is intended solely for the purposes indicated.
The present publication and any other documentation supplied with the UPS system is not to be
reproduced, either in part or in its entirety, without the prior written consent of GE.
The illustrations and plans describing the equipment are intended as general reference only and
are not necessarily complete in every detail.
The content of this publication may be subject to modification without prior notice.

g GE
OPM_SGS_ISG_10K_40K_0US_V010.doc 3/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Dear Customer,
We thank you for selecting our products and
are pleased to count you amongst our ver
y
valued customers at GE.
We trust that the use of the SG Serie
s
Uninterruptible Power Supply system,
developed and produced to the highes
t
standards of quality, will give you complete
satisfaction.
Please carefully read the Installation Guide.
It contains all the necessary information
about the installation of the UPS.
Thank you for choosing GE !
START UP AND COMMISSIONING
A GE Global Services Field Engineer must perform start-up and
commissioning of the UPS. Please Contact G.E. Global Services at least two
weeks prior to schedule start-up and commissioning at 1-800-637-1738, or by
E-mail at gedeserv[email protected]
Manufactured by: Distributed in the USA by: Your service contact:
g
GE
GE Digital Energy SA
6595 Riazzino (Locarno)
Switzerland

g GE
OPM_SGS_ISG_10K_40K_0US_V010.doc 4/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Preface
Congratulations on your choice of a SG Series Uninterruptible Power Supply (UPS).
It will help eliminate load disturbances due to unexpected power problem.
This manual describes how to prepare the installation site, and it provides weight
and dimensions and procedures for moving, installing and connecting the UPS.
Please refer to the Operating Manual, which describes the function of the UPS
module, the purpose and location of the switches, the meaning of the system
events related to the front panel indication, and provides procedures for starting
and stopping the equipment.
While every care has been taken to ensure the completeness and accuracy of this
manual, GE assumes no responsibility or liability for any losses or damages
resulting from the use of the information contained in this document.
WARNING!
SG Series 10, 20, 30 and 40 kVA, is a product that needs to be installed by a
licensed and knowledgeable contractor.
We recommend that this manual be kept next to the UPS for future references.
If any problems are encountered with the procedures contained in this manual,
please contact your Service Center before you proceed.
This document shall not be copied or reproduced without the permission of GE .
Some of the information contained in this manual may be changed without notice
to reflect technical improvements.
Safety instructions
Read the safety instructions contained on the following pages carefully before the
installation of the UPS, options and battery system.
Pay attention to the rectangular boxes included in the text:
They contain important information and warning concerning electrical connections
and personnel safety.
Parallel version secured with RPA
When included in the text, this symbol refers to
operation needed only for parallel system.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 5/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Table of contents Page
1IMPORTANT SAFETY INSTRUCTIONS...........................................................................6
2LAYOUT............................................................................................................................9
2.1 LAYOUT SG Series 10 AND 20 KVA................................................................................ 9
2.2 LAYOUT SG Series 30 AND 40 KVA.............................................................................. 10
3INSTALLATION ..............................................................................................................11
3.1 TRANSPORT.............................................................................................................. 11
3.1.1 Dimensions and weight ...............................................................................................11
3.2 DELIVERY ..................................................................................................................12
3.3 STORAGE ..................................................................................................................12
3.3.1 Storage of the UPS .....................................................................................................12
3.3.2 Storage of battery .......................................................................................................12
3.4 PLACE OF INSTALLATION ........................................................................................13
3.4.1 UPS location ...............................................................................................................13
3.4.2 Battery location ........................................................................................................... 15
3.5 VENTILATION AND COOLING...................................................................................16
3.6 UNPACKING............................................................................................................... 17
3.7 ELECTRICAL WIRING................................................................................................ 19
3.7.1 Utility input connection ................................................................................................ 19
3.7.2 Input/output over current protection and wire sizing .................................................... 20
3.7.3 Battery over current protection and wire sizing............................................................21
3.8 WIRING CONNECTION.............................................................................................. 24
3.8.1 Power connections......................................................................................................24
3.8.2 Power connection with common input utility of SG Series 10 and 20 kVA.......................27
3.8.3 Power connection with common input utility of SG Series 30 and 40 kVA.......................28
3.8.4 Power connection separate input utility of SG Series 10 and 20 kVA..............................29
3.8.5 Power connection separate input utility of SG Series 30 and 40 kVA..............................31
3.8.6 Battery connection of SG Series 10 and 20 kVA............................................................. 33
3.8.7 Battery connection of SG Series 30 and 40 kVA............................................................. 34
3.8.8 Setup for SG Series when functioning as frequency converter ....................................... 35
3.9 POWER WIRING OF PARALLEL UNITS....................................................................36
3.10 PARALLEL CONTROL BUS CONNECTION...............................................................37
3.11 CONTROL BUS CABLE LOCATION ..........................................................................39
4CUSTOMER INTERFACE...............................................................................................41
4.1 CUSTOMER INTERFACE ..........................................................................................41
4.1.1 Serial Port J3 ..............................................................................................................42
4.1.2 Output free potential contacts .....................................................................................42
4.1.3 Programmable input free contacts...............................................................................43
4.1.4 Gen Set Signaling (GEN ON)......................................................................................43
4.1.5 AUX external Maintenance Bypass .............................................................................43
4.1.6 Auxiliary Power Supply (APS) 24 VDC / 1A ................................................................43
4.1.7 EPO (Emergency Power Off) Input contact .................................................................44
5NOTES............................................................................................................................45
5.1 NOTES FORM ............................................................................................................ 45

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OPM_SGS_ISG_10K_40K_0US_V010.doc 6/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
1 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for models SG Series 10, 20, 30 and 40 kVA that should
be followed during installation and maintenance of the UPS and battery.
GENERAL
- Move the UPS in an upright position in its original package to the final destination room.
To lift the cabinets, use a forklift or lifting belts with spreader bars.
- Check for sufficient floor and elevator loading capacity.
- Check the integrity of the UPS equipment carefully.
If you notice visible damage, do not install or start the UPS. Contact the nearest Service Center
immediately.
- WARNING! RISK OF ELECTRICAL SHOCK: Do not remove covers; there are no user serviceable
parts inside.
- All maintenance and service work should be performed by qualified service personnel.
The UPS contains its own energy source (battery).
- The field-wiring terminals may be electrically live, even when the UPS is disconnected from the
utility.
- Dangerous voltages may be present during battery operation.
The battery must be disconnected during maintenance or service work.
- This UPS contains potentially hazardous voltages.
- Be aware that the inverter can restart automatically after the utility voltage is restored.
INSTALLATION
- This UPS must be installed and connected only by trained personnel.
- Verify accurately during Commissioning and Maintenance of the UPS, for the following:
Damaged components, squeezed wires and cables, or not correctly inserted plugs.
- After removing the sidewalls of the UPS, make sure that all earth connections when
reassembling, are correctly reattached.
- This UPS is intended for use in a controlled indoor environment free of conductive contaminants
and protected against animals intrusion.
- HIGH GROUND LEAKAGE CURRENT: Ground connection is essential before connecting to AC
input!
- Switching OFF the unit does not isolate the UPS from the utility.
- Do not install the UPS in an excessively humid environment or near water.
- Avoid spilling liquids on or dropping any foreign object into the UPS.
- The unit must be placed in a sufficiently ventilated area; the ambient temperature should not
exceed 104°F (40°C).
- Optimal battery life is obtained if the ambient temperature does not exceed 77°F (25°C).
- It is important that air can move freely around and through the unit. Do not block the air vents.
- Avoid locations in direct sunlight or near heat sources.
STORAGE
- Store the UPS in a dry location; storage temperature must be within -13°F (-25°C) to 131°F (55°C).
- If the unit is stored for a period exceeding 3 months, the battery must be recharged periodically
(time depending on storage temperature).
BATTERY
- The battery-voltage is dangerous for person’s safety.
- When replacing the battery, use the same number, voltage (V) and capacity (Ah).
- Proper disposal or recycling of the battery is required.
Refer to your local codes for disposal requirements.
- Never dispose of battery in a fire: They may explode.
- Do not open or mutilate battery: Their contents (electrolyte) may be extremely toxic.
If exposed to electrolyte, wash immediately with plenty of water.
- Avoid charging in a sealed container.
- Never short circuit battery.
When working with battery, remove watches, rings or other metal objects, and only use
insulated tools.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 7/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Safety instructions when working with battery
EXTERNAL BATTERY MUST BE INSTALLED AND CONNECTED TO THE
UPS BY QUALIFIED SERVICE PERSONNEL.
INSTALLATION PERSONNEL MUST READ THIS ENTIRE SECTION AND
REFER TO THE BATTERY MANUFACTURERS INSTALLATION MANUAL
BEFORE HANDLING THE UPS AND BATTERY.
UPS intended to be used with a remote battery supply – All models: “Please refer to the battery
manufacturer’s installation manual for battery installation and maintenance instructions”.
DANGER!
Full voltage and current are always present at the Battery Terminals.
The Battery used in this system can provide dangerous voltages, extremely high currents and a risk of
electric shock.
They may cause severe injury if the terminals are shorted together or to ground.
You must be extremely careful to avoid electric shock and burns caused by contacting Battery
Terminals or shorting terminals during battery installation.
Do not touch un-insulated Battery Terminals.
A qualified service person that is familiar with Battery systems and required precautions must install and
service the Battery.
The installation must conform to national and local codes.
Keep unauthorized personnel away from Battery.
The qualified service person must take these precautions:
1 Wear protective clothing, such as rubber gloves and boots and protective eye wear.
Batteries contain caustic acids and toxic materials and can rupture or leak if mistreated.
Remove rings and metal wristwatches or other metal objects and jewelry.
Do not carry metal objects in your pockets where the objects can fall into the Battery Cabinet.
2 Tools must have insulated handles and must be insulated so that they will not short Battery
Terminals.
Do not allow a tool to short between individual or separate Battery Terminals or to the cabinet or
rack.
Do not lay tools or metal parts on top of the Battery, and do not lay them where they could fall onto
the Battery or into the cabinet.
3 Install the Battery as shown on the drawing provided with the Battery.
When connecting cables, never allow a cable to short across a Battery’s Terminals, the string of
batteries, or to the cabinet or rack.
4 Align the cables on the Battery Terminals so that the cable lug will not contact any part of the
cabinet or rack, even if the Battery is moved.
Keep the cable away from any sharp metal edges.
5 Install the Battery Cables so the UPS or Battery Cabinet Doors cannot pinch them.
6 Do not connect the Battery Terminal to Ground.
If any Battery Terminal is inadvertently grounded, remove the source of the ground.
Contacting any part of a grounded Battery can cause a risk of electric shock.
7 To reduce the risk of fire or electric shock, install the Battery in a temperature and humidity
controlled indoor area, free of contaminants.
8 Battery System Chassis Ground (earth) must be connected to the UPS chassis ground (earth).
If you use conduit, this ground conductor must be routed in the same conduit as the Battery
Conductors.
9 Where conductors may be exposed to physical damage, protect the conductors in accordance with
all applicable codes.
10 If you are replacing Battery or repairing Battery Connections, shut OFF the UPS and remove the
Battery Fuses or open the Battery System disconnect.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 8/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Safety symbols and warnings
Safety warnings
The text of this manual contains some warnings to avoid risk to the persons and to avoid damages
to the UPS system and the supplied critical loads.
The non-observance of the warnings reminding hazardous situations could result in human injury
and equipment damages.
Please pay attention to the meaning of the following warnings and symbols.
Throughout this manual the following symbols are defined:
WARNING, if instruction is not followed injury or serious equipment
damage may occur!
CAUTION, internal parts have dangerous voltage present.
Risk of electric shock!
PE (Earth) – GND (Ground)
PROTECTIVE GROUNDING TERMINAL:
A terminal which must be connected to earth ground prior to making any
other connection to the equipment.
A terminal to which or from which an alternating (sine wave) current or
voltage may be applied or supplied.
A terminal to which or from which a direct current or voltage may be
applied or supplied.
This symbol indicated the word “phase”.
This symbol indicates the principal on/off switch in the on position.
This symbol indicates the principal on/off switch in the off position.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 9/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
2 LAYOUT
2.1 LAYOUT SG Series 10 AND 20 KVA
SGT5000_010-020_UPS_GE_02
Fig. 2.1-1 SG Series general view
SGT5000_010-020_UPS_GE_03
Fig. 2.1-2 SG Series general view with open doors
SGT5000_010-020_UPS_GE_04
4
1
2
5
CRXA XB
3
Fig. 2.1-3 SG Series general view with optional 5th harmonic filter
and removed protection panels
1Opening for top cable entry
2Opening for bottom cable entry
3Terminals for Utility input and
load output
4Terminals for external Battery
connection
BS Battery Shelf
CR Connectivity Rack
XA Terminals for 24VDC Auxiliary
Power Supply connection
XB Terminals for EPO connection

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OPM_SGS_ISG_10K_40K_0US_V010.doc 10/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
2.2 LAYOUT SG Series 30 AND 40 KVA
SGT5000_030-040_UPS_GE_02
Fig. 2.2-1 SG Series general view
SGT5000_030-040_UPS_GE_03
Q1 Q2
ON
OFF
OFF
ON
Fig. 2.2-2 SG Series general view with open doors
SGT5000_030-040_UPS_GE_04
4
1
3
2XBXA CR
OFF
ON
OFF
ON
Fig. 2.2-3 SG Series general view with optional 5th harmonic filter
and removed protection panels
1Opening for top cable entry
2Opening for bottom cable entry
3Terminals for Utility input and
load output
4Terminals for external Battery
connection
CR Connectivity Rack
XA Terminals for 24VDC Auxiliary
Power Supply connection
XB Terminals for EPO connection

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OPM_SGS_ISG_10K_40K_0US_V010.doc 11/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3 INSTALLATION
3.1 TRANSPORT
Transport UPS only in upright position!
The UPS is packaged on a pallet suitable for
handling with a forklift.
Pay attention to the center of gravity.
The UPS must be moved in upright position.
Do not tilt cabinets more than +/- 10° during
handling.
Move the UPS in it’s original package to the
final destination site.
Do not stack other packages on top:
This could damage the UPS.
If the UPS must be lifted by crane, use suitable
lifting straps and spreader bars.
Note of the center of gravity marked on the
package.
Forklift
Crane
Fig. 3.1-1 UPS cabinets moving
Check for sufficient floor and
elevator loading capacity.
3.1.1 Dimensions and weight
Dimensions SG Series 10, 20, 30 and 40 kVA
(W x D x H)
26.78 x 31.50 x 70.90 inches
680 x 800 x 1,800 mm
SGT5000_030-040_UPS dimensions_GE_01US
W
D
H
Fig. 3.1.1-1 UPS cabinet dimensions
Weight SG Series 10, 20, 30 and 40 kVA
UPS without battery UPS with battery
UPS rating Weight
lbs / kg
Floor loading
lbs/sq.ft - kg/m2
Weight
lbs / kg
Floor loading
lbs/sq.ft - kg/m2
SG Series 10 kVA 735 / 333 126 / 613 1,121 / 508 192 / 934
SG Series 20 kVA 763 / 346 131 / 637 1,169 / 530 200 / 975
SG Series 30 kVA 970 / 440 166 / 809 ––
SG Series 40 kVA 1,147 / 520 196 / 956 ––
P.S.: Weights including the 5th harmonic filter.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 12/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.2 DELIVERY
When delivered, inspect the package integrity and the physical conditions of the
cabinets carefully.
In case of any damage sustained during transport, immediately inform the carrier and contact
your local Service Center.
A detailed report of the damage is necessary for any insurance claim.
A DAMAGED UPS MUST NEVER BE INSTALLED OR CONNECTED TO
UTILITY OR BATTERY!
3.3 STORAGE
3.3.1 Storage of the UPS
The UPS is carefully packed for transport and storage so that it is in perfect condition when
installed.
Never leave a UPS outside the building and don’t store other packages on the top of the
UPS.
It is advisable to store the UPS in its original package in a dry, dust-free room, away from
chemical substances, and with a temperature range not exceeding -13°F (-25°C) to 131°F
(55°C).
Some important functions of the UPS, such as the customized functions, are defined by
parameters stored in a RAM memory.
A small backup battery located on the Control Unit board supplies the RAM.
If the storage time of the UPS exceeds 1 year, these functions should be verified by an
authorized Service Center before putting the UPS into operation.
3.3.2 Storage of battery
When the delivery includes a maintenance free battery, keep in mind that they are subject to
self-discharge and therefore you must recharge the battery.
The storage time without battery recharge depends on the temperature of the storage site.
The optimal temperature for battery storage is 68°F (20°C) to 77°F (25°C).
Recharge stored maintenance free battery every:
6 months when the storage temperature is 68°F (20°C)
3 months when the storage temperature is 86°F (30°C)
2 months when the storage temperature is 95°F (35°C)

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OPM_SGS_ISG_10K_40K_0US_V010.doc 13/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.4 PLACE OF INSTALLATION
3.4.1 UPS location
A qualified electrical contractor must carry out the installation and cabling
of the UPS.
If optional cabinets and accessories are included with the UPS, please
refer to those accompanying manuals for installation and operating
instructions.
It is important to have a clean, dust-free environment provided with proper ventilation and air-
conditioning to keep the ambient temperature within the specified operating range.
The recommended air inlet temperature is from 68°F (20°C) to 77°F (25°C) (max. 95°F /
35°C). Refer to Section 3.5.
Check for sufficient floor load capacity before installing the UPS and the battery.
Refer to Section 3.1.1.
For battery installation follow the local codes and the recommendation of the battery supplier.
Temperature is very important for valve-regulated batteries (maintenance
free).
Operation at temperatures higher than 77°F (25°C) will reduce battery life.
The SG Series UPS can radiate radio frequency energy.
Although some RFI filtering is inherent to the UPS there is no guarantee that the UPS will not
influence sensitive devices such as cameras and monitors that are positioned close by.
If interference is expected, the UPS should be moved away from the sensitive equipment.
A single-phase power outlet (120 VAC) should be provided near the UPS for connection of
power tools, test equipment or connectivity devices. This outlet must be grounded.
Positioning of the UPS SG Series
16" / 400mm
Min.
SGT5000_030-040_UPS disposition_GE_01
Fig. 3.4.1-1 SG Series 10, 20, 30 and 40 kVA clearances
The rear panel of the UPS may be mounted
flush to a wall or other structure.
Clearance around the front of the unit should
be sufficient to enable free passage of
personnel with the doors fully open, and to
allow sufficient airflow to the door vents.
Check Section 110-26(A) of the NEC code
for specific requirements.
Recommended minimum clearance between
ceiling and top of the UPS should be 16”
(400 mm) for proper cooling air exhaust.
In case of additional cabinets (external
Batteries or input, output transformers) these
can be placed on either side of the cabinet.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 14/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
Openings for input and output cable connections
SGT5000_010-020_UPSviewtop_01US
31.50"
800mm
9.06"
1.58"
40mm
230mm
9.06"
70mm
2.76"
26.78"
680mm
230mm
Utility input
Output Load
Battery
Fig. 3.4.1-2 Opening on top of the cabinet for input and
cables of SG Series 10 and 20 kVA
SGT5000_030-040_UPSviewtop_01US
31.50"
800mm
13.78"
1.58"
40mm
110mm
4.33"
70mm
2.76"
26.78"
680mm
350mm
Utility input
Output Load
Battery
Fig. 3.4.1-3 Opening on top of the cabinet for input and
cables of SG Series 30 and 40 kVA
SGT5000_030-040_UPSviewbottom_01US
26.78"
680mm
7.09"
180mm
70mm
2.76"
50mm
1.97"
7.88"
200mm
31.50"
800mm
Utility input
Output Load
Fig. 3.4.1-4 Opening on the bottom of the cabinet for input and
output cables SG Series 10, 20, 30 and 40 kVA
SG Series openings are provided on the
top and the bottom of the UPS for the
connection of input and output cables.
Pay attention to the position of these
openings, when choosing the placement
of the UPS.
These openings are covered with a
protective plate.
Positioning of the UPS cabinet
SG Series is equipped with wheels for easy
placement of the UPS.
To make the UPS movable on wheels, the
bolts on each leg of the cabinet have to be
turned counter-clockwise, until they are free
from the floor and thus the cabinet supported
on wheels.
After having positioned the UPS at its final
location, the cabinet has to be secured by
rotating the bolts on each leg clockwise, but
the wheels must still touch the floor.
To lower
To lift
Fig. 3.4.1-4 Bolts for the regulation of the cabinet
The UPS cabinet is free
standing and normally does
not require to be bolted to the
floor.
The UPS cabinet can be fixed
however to the floor by bolting
it with the supporting blocks to
the floor.
The supporting blocks can be
used in different positions (0° -
360°)
These supporting blocks are
part of the shipping package.
See Fig. 3.4.1-5.
SGT5000_010-020_UPS fixing_01
0 - 360°
Fig. 3.4.1-5 Fixing of the UPS cabinet on the floor

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OPM_SGS_ISG_10K_40K_0US_V010.doc 15/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
In case of parallel system, try to place the
UPS modules in sequence of their numbers
(marked on the packing).
If the units are positioned “side by side”,
the side panels must be mounted on all
units.
SGT5000_050-080_RPA disposition_GE_01US
UPS 1
UPS
3-4-5-6-7-8
UPS 2
Fig. 3.4.1-6 RPA system disposition
3.4.2 Battery location
Batteries require a well-ventilated room with controlled temperature to obtain reliable
operation.
The battery can be install immediately adjacent to the UPS (left or right side) or remotely
from the UPS.
If the battery is installed remotely from the UPS, a wall mounted DC disconnect device must
be installed within line-of-site to both the UPS and the battery.
The optimal room temperature for the battery is 68°F (20°C) to 77°F (25°C).
The life of valve-regulated batteries will be reduced by 50% for each additional 18°F (10°C)
that the battery ambient temperature is above 77°F (25°C).
The battery system associated with larger UPS is usually either rack mounted or installed in
multiple battery cabinets.
Installation and assembly must be made according to the local standards and battery system
manufacturer‘s recommendations.
The battery circuit breaker or battery fuse box must be mounted as near as possible to the
battery.
Battery installation and connection must be performed by qualified
personnel only.
Read all safety instructions before proceeding with the installation.

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OPM_SGS_ISG_10K_40K_0US_V010.doc 16/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.5 VENTILATION AND COOLING
Fig. 3.5-1 Installation on plain floor Fig. 3.5-2 Installation on raised floor
The heat produced by the UPS is transferred to the environment by its ventilation.
Air inlets for UPS ventilation are located on the front of the UPS, while air outlets are on top
of the cabinet.
A suitable ventilation or cooling system must be installed to extract the heat from the UPS
room.
Do not put anything on the top of the cabinet.
Air filtration systems could be required when the UPS operates in a dirty environment.
Contact your Dealer or the nearest Service Center for appropriate solutions.
In order to prevent overheating of the UPS, the available air intake flow rate must exceed the
total air exhaust flow rate requirement of the UPS system.
The below table indicates the heat dissipation at full load at PF = 0.8 lag. and charged
battery, up to 3,280 ft (1,000 m) altitude, for cooling air 77°F (25°C) to 86°F (30°C).
Losses Cooling air flow
UPS rating
BTU / hr kW CFM m3 / h
SG Series 10 kVA 3,036 0.89 135 230
SG Series 20 kVA 6,751 1.98 301 512
SG Series 30 kVA 8,104 2.37 361 614
SG Series 40 kVA 10,808 3.17 482 819

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OPM_SGS_ISG_10K_40K_0US_V010.doc 17/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.6 UNPACKING
The UPS and battery cabinets may be shipped packaged in carton boxes or in wooden
crates (if requested).
Move the cabinets as close as possible to the final location before removing from the pallet.
Remove the cabinet from the pallet with care because of the heavy weight of the equipment.
To unpack the cabinet follow the instructions below:
1. WOODEN CRATE WILL ARRIVE
AS SHOWN.
2.
REMOVE FRONT AND TOP
PANELS.
3. Let down the ramp “A” and save
wood braces “Band C” for ramp
supports.
4. Remove the remaining panels.
5. Unscrew anchoring bolt “D” from
plate on all four legs.
6. Loosen leveling foot.
A
A
D
B
C

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OPM_SGS_ISG_10K_40K_0US_V010.doc 18/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
7. Remove anchoring plate “E” from all
four legs and unscrew supporting
block screws “F”.
8. Divide the supporting blocks with
a hammer and save blocks “G”
and “H” for ramp supports.
9. Place blocks “G” and “H” and
frames “B” and “C” under ramp for
support.
10. Make sure leveling feet are raised
and carefully role UPS down
ramp.
Take care not to damage the UPS when moving by forklift.
For parallel systems, the delivery also includes the bus control
cables for inter-connecting the UPS modules.
Packing material recycling
GE, in compliance with environment protection, uses only environmentally
friendly material.
UPS packing materials must be recycled in compliance with all applicable
regulations.
E
F
F
G
H
G
H
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OPM_SGS_ISG_10K_40K_0US_V010.doc 19/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.7 ELECTRICAL WIRING
UPS installation and connection must be performed by qualified service
personnel only.
It is the responsibility of the installation technician to ensure that all local
and national electric codes are adhered to.
3.7.1 Utility input connection
Ensure that the AC and DC external isolators are OFF and locked out to prevent
their inadvertent operation.
Do not apply power to the equipment prior to the commissioning by a qualified
service engineer.
Before any other input connection, connect and check the grounding wire.
The UPS has available input terminations for the Rectifier and Bypass.
The unit may be powered from a common input source or separate input sources if desired.
Separate input Rectifier & Bypass (recommended)
The Bypass and Rectifier inputs are to be powered from different Utility supplies (F1 and
F2 inputs).
In this case, when the Rectifier Input Fuses are opened, the Bypass and the Manual
Bypass are supplied by the other source.
In this case, remove the interconnection links BR1, BR2 and BR3 on the
input terminals or bus bars.
See Fig. 3.8.4-2 for 10 - 20 kVA and Fig. 3.8.5-2 for 30 - 40 kVA.
Common input Rectifier & Bypass
The same power source is to be used for both Bypass Supply and Rectifier Input (input
F3). Bear in mind that when the Utility Fuses are opened there is a supply failure to the
Rectifier as well as to the Bypass and Manual Bypass.
In this case, the interconnection links BR1, BR2 and BR3 on the input
terminals or bus bars must remain connected.
See Fig. 3.8.4-2 for 10 - 20 kVA and Fig. 3.8.5-2 for 30 - 40 kVA.
Separate input Rectifier & Bypass (recommended) Common input Rectifier & Bypass
Fig. 3.7.1-1 Separate Input Rectifier & Bypass Fig. 3.7.1-2 Common Input Rectifier & Bypass
1 = Rectifier
2 = Inverter
3 = Automatic Bypass
4 = Manual Bypass
6 = Load
5 = Utility input
7 = Battery

g GE
OPM_SGS_ISG_10K_40K_0US_V010.doc 20/45 Installation Guide SG Series 10, 20, 30 & 40 kVA
3.7.2 Input/output over current protection and wire sizing
The cabling of the UPS system has to be sized according to the UPS power rating.
Sizing of circuit breakers, fuses and cables for Input Utility, Output Load and Battery must
meet the requirements of local and national electrical codes.
Before connecting the UPS, verify that the Utility Voltage and Frequency, the Output Load
Voltage and Frequency and Battery Data (cells number, floating voltage, autonomy) are
according to the required specifications.
Output load configuration may be such that one phase may carry a load current at 100% of
that phases maximum current rating while the other two phases run at 0% or any combination
in between.
Ensure that the load does not consist of any equipment that may require high starting currents
such as electric motors, laser printers, etc.
This may cause the UPS to occasionally go into Bypass due to overload conditions
To choose the correct input fuses or circuit breaker, consider the available short-circuit
current of the system up-stream.
Choose the correct fuse or breaker using current data shown in the chart and the appropriate
NEC code.
The ratings indicated in the following chart do not consider any line voltage drop.
In case of optional input transformer the input protective devices should be sized to allow the
transformer magnetization inrush current.
Caution when using four-pole circuit breakers as protection.
A potential problem exists for situations with non-linear loads:
The neutral current could be greater than the phase currents.
The three-phase Utility power supply must be symmetrical with respect to ground, due to the
existence of voltage surge protection devices inside the UPS.
If you use ELCB breaker (Earth Limiting Circuit Breaker) to protect the input
connections, consider the high leakage current generated by the noise
suppression capacitors.
If these ELCB breakers are strictly necessary, we suggest using the largest type
suitable for non-linear current and for delayed operations.
To ensure coordination when the UPS is configured for Separate Bypass and Rectifier Inputs,
special care must be taken in choosing the fuse or circuit breaker ratings installed in the
output distribution circuits.
Protective devices on the output of the UPS should be coordinated with the Bypass Input
circuit protection.
Due to the relatively low short circuit capability of the UPS inverter, a short circuit in the load
will cause an immediate transfer to Bypass.
The largest fuse or circuit breaker in the output distribution should be rated at no more than
60% of the rating of the protective device supplying the Bypass line.
If circuit selectivity is required while the load is fed from the inverter (Bypass Utility not
available), the largest fuse or circuit breaker should be rated at no more than 20% of the UPS
output current rating.