Xtreme E91 Guide

E91 Online UPS
10kVA, 15kVA, 20kVA, 30kVA, 40kVA Models
User & Installaon Manual
www.xpcc.com | © 2022 Xtreme Power Conversion Corporaon. All rights reserved. (Rev 3/25/22)

Xtreme Power Conversion Corporaon
E91 User’s Manual
Page 2
Uninterrupble Power Supply
Table of Contents
1. SAFETY AND EMC INSTRUCTIONS....................................................................................................3
1-1. TRANSPORTATION AND STORAGE.......................................................................................................3
1-2. PREPARATION.......................................................................................................................................3
1-3. INSTALLATION......................................................................................................................................3
1-4. CONNECTION WARNINGS...................................................................................................................4
1-5. OPERATION..........................................................................................................................................5
1-6. STANDARDS..........................................................................................................................................5
2. INSTALLATION AND OPERATION............................................................................................................6
2-1. UNPACKING AND INSPECTION.............................................................................................................6
2-2. UPS FLOOR-ANCHORING......................................................................................................................6
2-3. WIRING TERMINAL VIEW......................................................................................................................7
2-4. OPERATION PRINCIPLE.........................................................................................................................9
2-5. SINGLE UPS INSTALLATION....................................................................................................................9
2-6. UPS INSTALLATION FOR PARALLEL SYSTEM..........................................................................................12
2-7. SOFTWARE INSTALLATION..................................................................................................................14
3.OPERATION.......................................................................................................................................14
3-1. INITIAL OPERATION............................................................................................................................14
3-2. LED INDICATORS AND LCD PANEL.......................................................................................................14
3-3. SCREEN DESCRIPTION.........................................................................................................................14
3-4. AUDIBLE ALARM.................................................................................................................................41
3-5. SINGLE UPS OPERATION.....................................................................................................................42
3-6. PARALLEL OPERATION.....................................................................................................................44
3-7. FAULT CODE.......................................................................................................................................46
3-8. WARNING CODE.................................................................................................................................47
4. TROUBLE SHOOTING......................................................................................................................48
5.STORAGEANDMAINTENANCE........................................................................................................49
5-1. STORAGE............................................................................................................................................49
5-2. MAINTENANCE....................................................................................................................................49
6.SPECIFICATIONS..............................................................................................................................51

Xtreme Power Conversion Corporaon
E91 User’s Manual
Page 3
Uninterrupble Power Supply
1. Safety and EMC instrucons
All safety instrucons in this document must be read, understood and followed.
1-1. Transportaon and Storage
• Please transport the UPS system only in the original packaging to protect against shock and damage.
• The UPS must be stored in the room where the temperature is well regulated. Ambient temperature should
not exceed 40°C.
1-2. Preparaon
• Condensaon may form if the UPS system is moved immediately from cold to warm environment. The UPS
system must be absolutely dry before being installed. Please allow at least two hours for the UPS system to
acclimate the environment.
• Do not install the UPS system near water or in moist environments.
• Do not install the UPS system where it would be exposed to direct sunlight or nearby heat source.
• Do not block venlaon holes on the UPS housing.
1-3. Installaon
• Do not connect appliances or devices which would overload the UPS (e.g. big motor-type equipment) to the
UPS output terminal.
• Place cables in such a way that no one can step on or trip over them.
• Do not block air vents on the housing of the UPS. Ensure proper unit spacing of venlaon.
• UPS came equipped with grounding terminal, in the nal installaon phase, connect grounding/ earthing
wire to the external UPS baery cabinets or appropriate grounding terminals.
• The UPS can be installed only by qualied maintenance personnel.
• An appropriate disconnect device such as short-circuit backup protecon should be incorporated during
installaon.
• An integral emergency shuto switch which prevents addional load from the UPS in any mode of operaon
should be implemented during the installaon.
• Secure the grounding/earthing wire before connecng to any live wire terminal.
• Installaon and Wiring must be in accordance with the local electrical laws and regulaons.

Xtreme Power Conversion Corporaon
E91 User’s Manual
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Uninterrupble Power Supply
1-4. Connecon Warnings
In accordance with safety standard, installaon has to be provided with a [Backfeed Protecon] system, as for ex-
ample a contactor, which will prevent the appearance of voltage or dangerous energy in the input mains during
a mains fault. There is no standard backfeed protecon inside of the UPS. However, there are relays on the Input
to cut o line voltage and while the neutral is sll connect to UPS.
Input relay diagram Input relay diagram for dual-input model
There can be no derivaon in the line that goes from the «Backfeed Protecon» to the UPS, as the standard
safety would be infringed.
• Warning labels should be placed on all primary power switches installed in places away from the unit to alert
the electrical maintenance personnel of the presence of a UPS in the circuit. The label will bear the following or
an equivalent text:
Before working on this circuit
Isolate Uninterrupble Power Supply (UPS)
Then check for Hazardous Voltage between all terminals including the protected earth
Risk of Voltage Backfeed
• The power input for this unit must be three-phase rated in accordance with the equipment nameplate. It also
must be suitably grounded.
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
• This UPS should be connected with TN grounding/earthing system.
• Use of this equipment in medical instrument of any life-sustaining equipment where failure of this equipment
can reasonably be expected to cause the failure of the life-sustaining equipment or to signicantly aect its
safety or eecveness is not recommended. Do not use this equipment in the presence of a ammable mixture
with air, oxygen or nitrous oxide.
• Connect grounding terminal of UPS to a grounding electrode conductor.

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E91 User’s Manual
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Uninterrupble Power Supply
1-5. Operaon
• Do not disconnect the grounding/earthing conductor cable on the UPS or the building wiring terminals under
any circumstance.
• The UPS system features its own, internal current source (baeries). The UPS output sockets or output ter-
minal blocks may be electrically live even if the UPS system is not connected to the building mains/live wires.
(only for standard models)
• In order to fully disconnect the UPS system, rst press the “OFF” buon and then disconnect the mains/live
wires.
• Ensure that no liquid or other foreign objects can enter into the UPS system.
• The UPS can be operated by any individuals with no previous experience.
1-6. Standards
* Safety
UL 1778, CSA C22.2 No.107.3-14
* EMI
Conducted Emission...............................: FCC Part 15, Subpart B Class A
Radiated Emission..................................: FCC Part 15, Subpart B Class A
NOTE:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protecon against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instrucon manual, may cause harmful
interference to radio communicaons. Operaon of this equipment in a residenal area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.

Xtreme Power Conversion Corporaon
E91 User’s Manual
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Uninterrupble Power Supply
2. Installaon and Operaon
We oer oponal parallel funcon upon request. The UPS with parallel funcon is called the “Parallel model”. We
have detail installaon and operaon procedure of the Parallel Model in the following chapter.
2-1. Unpacking and Inspecon
Unpack the package and check the package contents. The shipping package should contain:
• One UPS
• One user manual
• One monitoring soware CD
• One USB cable
• One parallel cable (opon)
• One shared current cable (opon)
NOTE: Before the installaon, please inspect the unit. Be sure that there is no physical damage to the unit. Do not
turn on the unit and nofy the carrier and dealer immediately if there is any damage or missing parts and acces-
sories. Please keep the original packaging for future use. It is recommended to keep each equipment and baery
set in their original packaging because they have been designed to provide maximum protecon during transpor-
taon and storage.
2-2. UPS Floor-Anchoring
NOTICE: The L-shaped oor anchoring brackets that secured the enclosure to the pallet during shipment may be
used for a stand-alone UPS enclosure to enhance stability.

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E91 User’s Manual
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Uninterrupble Power Supply
2-3. Wiring Terminal View
E91 units with internal baeries
E91-10K Rear Panel E91-15K/20K Rear Panel
E91-10K Input/Output Terminal E91-15K/20K Input/Output Terminal

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E91 User’s Manual
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Uninterrupble Power Supply
E91 units with internal baeries
E91-30/40K front view door removed E91-30/40K rear view
E91-30/40K wiring panels E91-30/40k cable roung diagram

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E91 User’s Manual
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Uninterrupble Power Supply
1. RS-232 communicaon port (only for rmware updates)
2. USB communicaon port
3. Emergency power o funcon connector (EPO connector)
Note: Keep the EPO connector closed for UPS normal operaon.
To acvate EPO funcon, please remove the jumper
4. Share current port
5. Parallel port
6. Intelligent slot
7. External baery connector
8. Line input circuit breaker/switch
9. Maintenance bypass switch
10. Input/Output terminal (Refer to the diagram for the details)
11. Line input terminal
12. Output terminal
13. Input grounding terminal
14. Output grounding terminal
15. Bypass input circuit breaker/switch
16. Bypass input terminal
17. Output circuit breaker

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E91 User’s Manual
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Uninterrupble Power Supply
2-4. Operaon Principle
The operang principle of the UPS is shown as below.
2-5. Single UPS Installaon
Installaon and wiring must be carried out in accordance with the local electric laws and regulaons by trained
professionals.
1) Make sure that the mains wire and breakers of the building are rated for the capacity of the UPS to prevent
electric shock or risk of re.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than the
UPS’s maximum input current. The receptacle may be damaged and destroyed.
2) Switch o the mains switch in the building before installaon.
3) Turn o all the connected devices before connecng to the UPS.
4) Prepare wires based on the following table:
CAUTION - To reduce the risk of re, AC input terminals of each UPS should be connected to branch circuit breaker
with maximum overcurrent protecon in accordance with the Naonal Electric Code, ANSI/NFPA 70 as below
table.
Model E91-10K E91-15K E91-20K E91-30K E91-40K
Wiring (AWG) 6 4 2 2/0 3/0
Torque force (lb-in) 17.71 26.56 AC:60
DC:132.8
AC Input Protecon Device 63A 80A 100A 150A 200A
AC Output Protecon Device 30A 50A 60A 100A 150A
NOTE 1: The selecons for color of wires should be followed by the local electrical laws and regulaons.
NOTE 2: Only use 90°C copper wires.
NOTE 3: Ring terminal of PE stud size shall be minimum 8mm and can be connected to minimum AWG
copper wire noted above

Xtreme Power Conversion Corporaon
E91 User’s Manual
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Uninterrupble Power Supply
5) Remove the terminal block cover at the rear panel of UPS. Then, connect the wires according to the following
terminal block diagrams. (Connect the grounding/earthing wire rst when making other wire connecons. Re-
move the grounding/earthing wire last when connecng the UPS!)
NOTE: For single ulity power system, connect input terminals to the AC power source and use supplied jumper
wire to connect input and bypass input together (shows dashed line in below wiring diagrams)
Terminal block wiring diagram for 10K
Terminal block wiring diagram for 15K/20K

Xtreme Power Conversion Corporaon
E91 User’s Manual
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Uninterrupble Power Supply
Terminal block wiring diagram for 30K/40K
Baery connecon wiring
NOTE 1: Make sure that the wires are connected securely with the terminals.
NOTE 2: Please install the output breaker between the output terminal and the load, and the breaker
should have leakage current protecve funcon if necessary.
6) Put the terminal block cover back at the rear panel of the UPS.

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E91 User’s Manual
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Uninterrupble Power Supply
Warning: (Only for standard model)
● Make sure the UPS is o before the installaon. The UPS should not be turned on during wiring con-
necon.
● Do not aempt to modify the standard model into the long-run model. In parcular, do not try to con-
nect the standard internal baery to the external baery. The baery type and voltage may be dierent,
risk of electric shock or re may occurred!
Warning: (Only for long-run model)
● Make sure a DC breaker or other protecve device between UPS and the external baery pack is in-
stalled for added safety. If not, please install it carefully. Switch o the baery breaker before installaon.
NOTE: Set the baery pack breaker in “OFF” posion and then install the baery pack.
● Pay special aenon to the rated baery voltage marked on the rear panel. If you want to change the
numbers of the baery in a chain, make sure you modify the UPS seng accordingly. Connecon with
wrong baery voltage may cause irreversible damage of the UPS.
● Pay special aenon to the polarity marking on external baery terminal block. Connecon with wrong
baery voltage may cause irreversible damage of the UPS.
● Make sure the protecve grounding/earthing wiring is adequate. The current spec, color, posion, con-
necon and conductance reliability of the wire should be veried.
● Make sure the ulity input & output wiring is rated correctly. The current spec, color, posion, con-
necon and conductance reliability of the wire should be veried. Make sure the L/N side is correct, not
reverse or short-circuited.
2-6. UPS Installaon for Parallel System
If the UPS is only for single operaon, you may skip this secon.
1) Install and wired the UPS according to the secon 2-5.
2) Connect the output wires of each UPS to an output breaker.
3) Connect all output breakers to a centralize breaker. This centralize output breaker will then con-
nect directly to the loads.
4) Either common baery packs or independent baery packs for each UPS are allowed.
5) Refer to the following wiring diagram for input, output and bypass input:
Wiring diagram of parallel system for 10K/15K/20K

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E91 User’s Manual
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Uninterrupble Power Supply
Wiring diagram of parallel system for 30K/40K
6) Refer to the following communicaon wiring diagrams for share current cable and parallel cable
connecons.
Diagram 1: Two UPSs in parallel Diagram 2: Three UPS in parallel
Parallel system for 10K/15K/20K
Diagram 1: Two UPSs in parallel Diagram 2: Three UPS in parallel
Parallel system for 30K/40K

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E91 User’s Manual
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Uninterrupble Power Supply
2-7. Soware Installaon
For opmal computer system protecon, install UPS monitoring soware to congure UPS shutdown
operaon.
3. Operaon
3-1. Inial Operaon
1) Before operaon, make sure that the two strings of baeries are connected correctly in order of
”+,GND,-” terminals and the breaker of the baery pack is at “ON” posion (only for long-run model).
2) Press the “ ” buon to set up the power supply for the UPS. UPS will enter to power on
mode. Aer inializaon, UPS will enter to “No Output mode”.
3-2. LED Indicators and LCD Panel
LED Indicators:
There are 4 LEDs on front panel to show the UPS working status:
Mode / LED Bypass Line Baery Fault
UPS On ● ● ● ●
Standby mode ○ ○ ○ ○
Bypass mode ● ○ ○ ○
Line mode ○ ● ○ ○
Baery mode ○ ○ ● ○
CVCF mode ○ ● ○ ○
Baery Test ● ● ● ○
ECO mode ● ● ○ ○
Fault ○ ○ ○ ●
Note: ● means LED is lighng, and ○ means LED is faded.
3-3. Screen Descripon
Aer inializaon, the LCD will display main screen. There are ve sub-menus: Control, measure,
seng, informaon and data log. Touch any sub-menu icon to enter into the sub-screen.
LED indicators
LCD panel

Xtreme Power Conversion Corporaon
E91 User’s Manual
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Uninterrupble Power Supply
MAIN
Initializing
CONTROL
DATA LOG
MEASURE
ON/OFF UPS
BATTERY TEST
MUTE ALL
MEASURE1
MEASURE2
MEASURE3
GENERAL
BASIC1
BASIC2
SETTING
INFO
ON/OFF CHARGER
DATALOG
PARAMETERS
CALIBRATION
EEPROM
TOUCH
SYS PARAMETER
PASSWO RD :****
INSTALL INFO
VOL CALI
CURR CALI
INITIAL
ELECTRICAL
BATTERY
MISCELLANEOUS
UPS SELFTEST
ELECTRICAL
BATTERY
MISCELLANEOUS
PASSWO RD :0000
PARAMETER INFO
RATED INFO
BASIC INFO
ADVANCE
SAVE
SETTING
User
Maintain er
Menu tree
3-3-1. Main screen
Upon powering on, the LCD will start inializaon approximately few seconds as shown below.
96 72 .07
Aer inializaon, the main screen will display as shown below. On the boom, there are ve icons to
represent ve sub-menus: CONTROL, MEASURE, SETTING, INFO, DATALOG.

Xtreme Power Conversion Corporaon
E91 User’s Manual
Page 17
Uninterrupble Power Supply
DATAL OG
I NFOSETTI NG
MEASURECONT ROLHOME
20KVA
Bypass Mode
120.0V
120.0V
120.0V
120.0V
120.0V
120.0V
60.0Hz
60.0Hz
19:52:36
2018-11-07
120.0V
120.0V
60.0Hz
120.0V
50%
125.0V
9AH
0%
3-3-2. Control screen
Touch the icon to enter control sub-menu.
DATAL OG
I NFOSETTI NG
MEASURECONT ROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Touch icon to return back to main screen no maer it’s in any screen of any submenu.
HOME CONTROL
ON/OF F UPS
MUTE ALL
Confirm YES Turn ON /OFF UPS
Confirm YES Do Batt ery Te st
Confirm YES Do M UT E A LL
En te r No Or Back
En te r No Or Back
En te r No Or Back
ON/OF F CHARGER
BATTERY TEST
Confirm YES Tu rn ON/OFF CHARGER
En te r No Or Back

Xtreme Power Conversion Corporaon
E91 User’s Manual
Page 18
Uninterrupble Power Supply
DATAL OG
I NFOSETTI NG
MEASURECONT ROLHOME
20KVA
Bypass Mode
120.0V
120.0V
120.0V
120.0V
120.0V
120.0V
60.0Hz
60.0Hz
19:52:36
2018-11-07
120.0V
120.0V
60.0Hz
120.0V
50%
125.0V
9AH
0%
Control screen
Touch the icon to enter control sub-menu.
DATAL OG
I NFOSETTI NG
MEASURECONT ROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Touch icon to return back to main screen no maer it’s in any screen of any submenu.
HOME CONTROL
ON/OF F UPS
MUTE ALL
Confirm YES Turn ON /OFF UPS
Confirm YES Do Batt ery Te st
Confirm YES Do M UT E A LL
En te r No Or Back
En te r No Or Back
En te r No Or Back
ON/OF F CHARGER
BATTERY TEST
Confirm YES Tu rn ON/OFF CHARGER
En te r No Or Back
Screen 1.0 «Control» and its sub-menus

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E91 User’s Manual
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On/O UPS
It will show “Turn on UPS?” when UPS is o.
It will show “Turn o UPS?” when UPS is on.
Touch “YES” to turn on or o the UPS. Then, the screen will return to main screen
Touch “Back” to return to main screen immediately or “No” to cancel this operaon and back o main screen.
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER Tur n On UPS?
YES NO
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER Tur n Off UPS?
YES NO
TURN ON UPS TURN OFF UPS
Baery Test
It will show “Baery Test” if the UPS is not in test. Touch “Yes” to start baery test. Then, it will show “Baery
tesng..…” during baery test period. Aer few seconds, baery test result will show on the screen. Touch
“Back” to return to main screen immediately or “No” to cancel this operaon and back to main screen.
It will show “Cancel baery test” if the UPS is in test.
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
BATT Tes t ?
YES NO
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Cancel BATT Test ?
YES NO
Baery Test Cancel Baery Test
Audio mute
It will show “Mute all” if the audio is acve. Touch “Yes” to acvate mute. If “Mute all” is acve, I will show
icon on the top le corner of the main screen. Touch “Back” to return to CONTROL screen immediately or “No”
to cancel this operaon and back to CONTROL screen.
It will show “Cancel mute” if the UPS is mute already. Touch “Yes” acvate audio funcon or “No” to keep mute.
Touch “Back” to return to CONTRL screen.

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E91 User’s Manual
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Uninterrupble Power Supply
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Mut e Al l ?
YES NO
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Cancel Mut e Al l ?
YES NO
Mute All Cancel Mute all
On/O Charger
It will show “Turn on Charger?” when charger is o.
It will show “Turn o Charger?” when charger is on.
Touch “YES” to turn on or o the charger. Then, the screen will return to main screen.
Touch “Back” to return to CONTROL screen immediately or “No” to cancel this operaon and back to CONTROL
screen.
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Tur n On Char ger ?
YES NO
DATAL OG
I NFOSETTI NG
MEASURECONTROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
ON/OFF UPS
BATT TEST
MUTE AL L
ON/OF F CHARGER
Tur n Off Char ger ?
YES NO
TURN ON CHARGER TURN OFF CHARGER
3-3-3 Measure screen
Touch the icon to enter measure page. Touch the icon or to browse informaon. Touch the icon
to return to main screen. Touch the icon to go back to previous menu.
DATAL OG
I NFOSETTI NG
MEASURECONT ROLHOME
20KVA
Bypass Mode
19:52:36
2018-11-07
LI NE VOL I NVERTER VOL BYPASS VOL OUT P UT VOL
R:
S:
T:
RS:
ST:
TR:
60. 0Hz
120. 0V
120. 0V
120. 0V
207. 8V
207. 8V
207. 8V
120. 0V
120. 0V
120. 0V
207. 8V
207. 8V
207. 8V
60. 0Hz
120. 0V
120. 0V
120. 0V
207. 8V
207. 8V
207. 8V
60. 0Hz
0. 3V
0. 3V
0. 3V
0. 4V
0. 4V
0. 4V
0. 0Hz
Measure screen page 1