SolarEdge L10US-IB20 User manual

Installation Guide
Version 1.0 September 2021
Cat. No. 2MUM-
Uninterruptable Power Supply
for 208VAC Grid
L10US-IB20, L10US-IB40,
L10US-IB60 L10US-IB00,
L15US-IB40, L15US-IB60
L15US-IB00, L20US-IB60,
L20US-IB00

.

ii
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Important Notice
•Copyright © July 2021 SolarEdge Inc. Doc. Part 2MUM-SG-. All rights reserved.
•No part of this document may be reproduced, stored in a retrieval system, or transmitted,
in any form or by any means, electronic, mechanical, photographic, magnetic, or
otherwise, without the prior written permission of SolarEdge Inc.
•All company and brand products and service names are trademarks or registered
trademarks of their respective holders.
•Patent marking notice: see http://www.solaredge.com/patent
•The general terms and conditions of delivery of SolarEdge shall apply.
•The content of these documents is continually reviewed and amended, where necessary.
However, discrepancies cannot be excluded.
•The images contained in this document are for illustrative purposes only and may vary
depending on product models.

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Thank you for selecting this uninterruptible power supply (UPS). It provides you with
protection for connected equipment. Please read this manual before installing the L series
models as it provides important information that should be followed during installation and
maintenance of the UPS and batteries, allowing you to correctly set up your system for the
maximum safety and performance. Included is information on customer support and service
if it is required. If you experience a problem with the UPS, please refer to the
Troubleshooting section in this manual to correct the problem. If the problem is not
corrected, please collect information so that the Technical Support personnel can more
effectively assist you.

iv
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Table of Contents
1. PREFACE ................................................................................................................................................1
1.1. STANDARDS AND CONVENTIONS..............................................................................................................1
1.2. SAFETY SYMBOLS INFORMATION .............................................................................................................. 1
1.3. TECHNICAL SUPPORT ...............................................................................................................................2
2. IMPORTANT SAFETY INSTRUCTIONS (SAVE THESE INSTRUCTIONS) ........................................3
3. UPS INSTALLATION PRECAUTIONS..................................................................................................7
4. MAIN FEATURES ................................................................................................................................11
4.1. SUMMARY.............................................................................................................................................11
4.2. FUNCTIONS AND FEATURES ....................................................................................................................11
4.3. SYSTEM CONFIGURATION .......................................................................................................................12
5. INSTALLATION...................................................................................................................................13
5.1. INSTALLATION NOTES.............................................................................................................................13
5.2. DIMENSIONS AND WEIGHT ....................................................................................................................15
5.3. MOUNTING INFORMATION.........................................................................................................................17
5.4. UNPACKING AND FIRST CHECK................................................................................................................18
5.5. CABINET VIEW .......................................................................................................................................20
5.6. LCD CONTROL PANEL VIEW....................................................................................................................23
5.7. ELECTRICAL DIAGRAMS ..........................................................................................................................24
5.8. EXTERNAL PROTECTIVE DEVICES .............................................................................................................. 26
5.8.1. External battery......................................................................................................................... 26
5.8.2. UPS output ................................................................................................................................ 26
5.8.3. Over-current protection ........................................................................................................... 26
5.9. POWER CABLES......................................................................................................................................26
5.9.1. Cable sizes................................................................................................................................. 27
5.9.2. Recommended installed screw torque .................................................................................... 27
5.10. POWER CABLE CONNECTION................................................................................................................... 27
5.10.1. Bottom cable entry ................................................................................................................... 28
5.10.2. Common input connection ...................................................................................................... 28
5.10.3. Split input connection ................................................................................................................. 29
5.10.4. Internal battery connections.................................................................................................... 31
5.10.5. External battery connections for long-run units .................................................................... 34
5.10.6. Installation and setup............................................................................................................... 36
5.10.7. Unpacking & Inspection........................................................................................................... 36
5.10.8. Selecting installation position.................................................................................................. 36
5.11. UPS PARALLEL INSTALLATION (OPTIONAL)..............................................................................................37
5.11.1. Cabinet installation .................................................................................................................. 37
5.11.2. Parallel cable installation ........................................................................................................ 39
5.12. COMPUTER ACCESS................................................................................................................................39

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
5.13. PARALLEL SYSTEM COMMISSIONING........................................................................................................ 42
5.14. DISPLAY MESSAGES AND TROUBLESHOOTING........................................................................................... 43
5.14.1. Operational status and mode(s)................................................................................................. 43
5.14.2. Faults and alarms reports........................................................................................................... 44
5.14.3. Operational status and mode(s)................................................................................................. 48
5.15. OPTIONAL FEATURES.............................................................................................................................. 49
5.15.1. SNMP card................................................................................................................................. 49
5.15.1.1. Functions................................................................................................................................................49
6. APPENDIX 1: SPECIFICATIONS ........................................................................................................51
7. APPENDIX 2: TROUBLESHOOTING .................................................................................................56
8. APPENDIX 3: USB COMMUNICATION PORT DEFINITION ..........................................................58
8.1. DEFINITION OF THE PORT ...........................................................................................................................58
8.2. AVAILABLE FUNCTION OF USB....................................................................................................................58
8.3. COMMUNICATION DATA FORMAT................................................................................................................58
9. APPENDIX 4: RS232 COMMUNICATION PORT DEFINITION ......................................................59
9.1. DEFINITION OF THE MALE PORT................................................................................................................... 59
9.2. AVAILABLE FUNCTION OF RS232 ................................................................................................................59
9.3. RS-232 COMMUNICATION DATA FORMAT ....................................................................................................59
10. APPENDIX 5: RS485 COMMUNICATION PORT DEFINITION ..................................................60
10.1. DEFINITION OF THE PORT ...........................................................................................................................60
10.2. AVAILABLE FUNCTION OF RS485 ................................................................................................................60
10.3. COMMUNICATION DATA FORMAT................................................................................................................60
11. APPENDIX 6: DRY CONTACT PORT DEFINITION..................................................................................61
11.1. DEFINITION OF MALE PORT.........................................................................................................................61
12. APPENDIX 7: BACKFEED PROTECTION PORT DEFINITION...................................................................63
12.1. PORT DEFINITION .....................................................................................................................................63
12.2. FUNCTION DESCRIPTION ............................................................................................................................63
12.3. BACKFEED INSTALLATION WITH RELAY:..........................................................................................................64

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Table of Figures
FIGURE 1REMOVE COVERS............................................................................................................................................ 7
FIGURE 2REMOVE FIXING SCREWS.................................................................................................................................. 8
FIGURE 3: CONNECTOR OPERATION................................................................................................................................9
FIGURE 4BATTERY TERMINAL DOCKING ...........................................................................................................................9
FIGURE 5INSTALL COVERS...........................................................................................................................................10
FIGURE 6: DIMENSIONS (INCHES) .................................................................................................................................15
FIGURE 7INSTALLATION CLEARANCE..............................................................................................................................17
FIGURE 8250MM WIDE UNIT MOUNTING BRACKET..........................................................................................................18
FIGURE 9UNIT WHEELS LOCKING DEVICE........................................................................................................................18
FIGURE 10 CUT OFF THE BANDAGE ................................................................................................................................19
FIGURE 11 REMOVE THE PACKAGE................................................................................................................................19
FIGURE 12 REMOVE THE INNER PACKAGE....................................................................................................................... 19
FIGURE 13 PLACE THE INCLINE BOARD ...........................................................................................................................20
FIGURE 14 SLIDE DOWN THE CABINET............................................................................................................................20
FIGURE 15 FRONT VIEW/SIDE VIEW OF L10US, L15US AND L20US.................................................................................20
FIGURE 16 REAR VIEW (TERMINAL BLOCK WITHOUT COVER)OF L10US, L15US AND L20US..................................................21
FIGURE 17 COMMUNICATION PANEL ............................................................................................................................22
FIGURE 18 LCD CONTROL PANEL .................................................................................................................................23
FIGURE 19: REMOTE EPO NO AND NC PORT.................................................................................................................24
FIGURE 20: EXTERNAL MAINTENANCE BYPASS AUXILIARY CONTACTS ....................................................................................25
FIGURE 21 COMMON INPUT CONNECTION...................................................................................................................... 28
FIGURE 22 SPLIT INPUT CONNECTION ............................................................................................................................29
FIGURE 23 CABLING DIAGRAM .....................................................................................................................................30
FIGURE 24 BUILD-IN BATTERY CONNECTION OF L10US-IB20 (20PCS)................................................................................32
FIGURE 25 BUILD-IN BATTERY CONNECTION OF L10US, L15US -IB40 (2*20PCS)...............................................................32
FIGURE 26 BUILD-IN BATTERY CONNECTION OF L10US, L15US AND L20US -IB60 (3*20PCS)..............................................33
FIGURE 27 EXTERNAL BATTERY CONNECTIONS FOR LONG-RUN UNITS .................................................................................. 35
FIGURE 28 COMMON INPUT CONNECTION...................................................................................................................... 37
FIGURE 29 DUAL INPUT CONNECTION............................................................................................................................ 38
FIGURE 30 REQUIREMENT FOR THE PARALLEL SYSTEM....................................................................................................... 39
FIGURE 31 MUSER5000 HOMEPAGE ............................................................................................................................40
FIGURE 32 MUSER5000 COMMUNICATION SETTING PAGE ................................................................................................40
FIGURE 33 MUSER5000 APPEND EQUIPMENT PAGE ........................................................................................................41
FIGURE 34 MUSER5000 APPEND EQUIPMENT MANUAL SETTING PAGE................................................................................41
FIGURE 35 SNMP CARD............................................................................................................................................. 50
FIGURE 36 USB PORT ................................................................................................................................................58
FIGURE 37 CONNECTION BETWEEN PC RS232 PORT AND UPS RS232 PORT........................................................................59
FIGURE 38 RS485 PORT............................................................................................................................................. 60
FIGURE 39 DRY CONTACT PORT................................................................................................................................... 61
FIGURE 40 BACKFEED PORT ........................................................................................................................................63
FIGURE 41 BACKFEED DIAGRAM ...................................................................................................................................64

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Table of Tables
TABLE 1BATTERIES QUANTITY .......................................................................................................................................5
TABLE 2LOAD COEFFICIENTS........................................................................................................................................ 14
TABLE 3: DIMENSIONS AND WEIGHTS ...........................................................................................................................16
TABLE 4CABINET OVERVIEW.......................................................................................................................................21
TABLE 5COMMUNICATION PANEL...............................................................................................................................22
TABLE 6LCD AND LED DISPLAY ...................................................................................................................................23
TABLE 7RECOMMENDED CABLE SIZES ...........................................................................................................................27
TABLE 8RECOMMENDED INSTALLED SCREW TORQUE........................................................................................................ 27
TABLE 9COMMON INPUT CONNECTION ........................................................................................................................28
TABLE 10 SPLIT INPUT CONNECTION .............................................................................................................................30
TABLE 11 BATTERIES QUANTITY ...................................................................................................................................34
TABLE 12 OPERATIONAL STATUS AND MODE(S)............................................................................................................... 43
TABLE 13 FAULT INFORMATION................................................................................................................................... 44
TABLE 14 ALARM INFORMATION .................................................................................................................................46
TABLE 15 OPERATIONAL STATUS AND MODE(S) .............................................................................................................48
TABLE 16 SPECIFICATIONS...........................................................................................................................................51
TABLE 17 PROBLEMS AND SOLUTIONS ........................................................................................................................... 56
TABLE 18 CONNECTION BETWEEN PC USB PORT AND UPS USB PORT ................................................................................58
TABLE 19 CONNECTION BETWEEN PC RS232 PORT AND UPS RS232 PORT .........................................................................59
TABLE 20 CONNECTION BETWEEN THE COVERTER AND UPS REPO PORT...............................................................................60
TABLE 21 INPUT DRY CONTACT INTERFACE....................................................................................................................61
TABLE 22 OUTPUT DRY CONTACT INTERFACE.................................................................................................................61
TABLE 23 INTERFACE DEFINITION .................................................................................................................................63

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
1. Preface
1.1. Standards and Conventions
This user manual contains diagrams which include images of the display screen of the UPS.
Unless otherwise indicated, the readings shown in the screen images are only illustrative and
are not intended to match the readings on a specific system in any particular environment.
Operation and control of the L Family UPSes is performed through a touch-sensitive LCD
display screen. In this manual, when explaining how to navigate the control software using
the touch-sensitive screen, the terms "tap", "press", "choose", and "select" may be used
interchangeably to indicate selection of a screen option.
Most of the electrical abbreviations in this document are according to IEEE 280 Standard
Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering.
1.2. Safety Symbols Information
The following safety symbols are used in this document. Familiarize yourself with the
symbols and their meaning before installing or operating the system.
NOTE!
Denotes additional information about the current subject.
CAUTION!
Denotes a caution. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in injury or loss of life. Do not proceed
beyond a caution note until the indicated conditions are fully understood and
met.
WARNING!
Denotes a warning. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in injury or loss of life. Do not proceed
beyond a caution note until the indicated conditions are fully understood and
met.

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
WARNING - RISK OF LETHAL ELECTRIC SHOCK!
Denotes an electrical hazard. It calls attention to a procedure that, if not
correctly performed or adhered to, could result in injury or loss of life. Do not
proceed beyond a warning note until the indicated conditions are fully
understood and met.
1.3. Technical Support
You can contact technical support by any of the following methods.
SOLAREDGE Inc. - Critical Power Service Department
•Available via email at [e-mail]
Phone support
US
•Available 24 * 7 * 365 by phone at [phone].
Other regions
•Available 24 * 7 * 365 by phone at (972) 73 2403139

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L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
2. Important Safety Instructions (Save These Instructions)
SAVE THESE INSTRUCTIONS! This manual contains important instructions for Model L10US,
L15US and L20US that should be followed during installation and maintenance of the UPS
and batteries.
L10US External DC Circuit Over current Protective Device - "CAUTION - To reduce the risk of
fire, connect only to a circuit provided with DC 100 amperes maximum branch circuit over
current protection in accordance with the National Electric Code, ANSI/NFPA 70”.
L15US External DC Circuit Over current Protective Device - "CAUTION - To reduce the risk of
fire, connect only to a circuit provided with DC 120 amperes maximum branch circuit over
current protection in accordance with the National Electric Code, ANSI/NFPA 70”.
L20US External DC Circuit Over current Protective Device - "CAUTION - To reduce the risk of
fire, connect only to a circuit provided with DC 160 amperes maximum branch circuit over
current protection in accordance with the National Electric Code, ANSI/NFPA 70”.
WARNING! When backfeed protection is needed by local area regulations and codes, please
note that it is not a part of the system design and you must install an external automatic
isolation device on site, in order to prevent dangerous voltage or energy in the input of the
isolation device. The device must be rated according to the system specifications and must
open within 15 seconds after the upstream power supply fails.
HAZARD! If those instructions are not followed it may cause death or serious injury.
A label of this text or equivalent text in your language, must be installed on the UPS, and on
the backfeed isolator protection if it is installed remotely from the UPS.
CAUTION! (UPS having Internal Batteries): Risk of electrical shock –Hazardous
live parts inside this unit are energized from the battery supply even when the
input AC power is disconnected.
CAUTION! (No User serviceable Parts): Risk of electrical shock, do not remove
cover. No user serviceable parts inside. Refer servicing to qualified service
personnel.
CAUTION! (Non-isolated Battery supply): Risk of electric shock, battery circuit is
not isolated from AC input, hazardous voltage may exist between battery
terminals and ground. Test before touching.
WARNING! (Fuses): To reduce the risk of fire, replace only with the same type
and size of fuse.

4
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
WARNING! Unit intended for installation in a controlled environment.
WARNING! Do not dispose of batteries to a fire, the battery may explode.
CAUTION! Do not open or damage the battery, released electrolyte is harmful
to the skin and eyes.
CAUTION! A battery can present a risk of electric shock and high short circuit
current. The following precaution should be observed when working on
batteries: remove watches, rings, or other metal objects, use tools with
insulated handles.
To reduce the risk of electric shock, disconnect the UPS from the main supply
before installing a computer interface signal cable. Reconnect the power cord
only after signaling interconnections have been made.
Servicing of batteries should be performed or supervised by personnel with
knowledge of batteries and the required precautions. Keep unauthorized
personnel away from batteries.
For Replacement of batteries located in a service access area:
1. Servicing of batteries should be performed or supervised by personnel
knowledgeable about batteries and the required precautions.
2. Risk of explosion if battery is replaced by an incorrect type. When
replacing batteries, replace with the same type and number of batteries or
battery packs.
3. CAUTION: Do not dispose of batteries in a fire. The batteries may
explode. Dispose of used batteries according to the instructions.
4. CAUTION: Do not open or damage batteries. Released electrolyte is
harmful to the skin and eyes. It may be toxic.
5. CAUTION: A battery can present a risk of electrical shock and high short
circuit current. The following precautions should be observed when working on
batteries:
•Remove watches, rings, or other metal objects.
•Use tools with insulated handles.
•Wear rubber gloves and boots.
•Do not lay tools or metal parts on top of batteries.

5
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
•Disconnect charging source prior to connecting or disconnecting
battery terminals.
•Determine if battery is inadvertently grounded. If inadvertently
grounded, remove source from ground. Contact with any part of a grounded
battery can result in electrical shock. The likelihood of such shock can be
reduced if such grounds are removed during installation and maintenance.
These UPS units are extremely heavy. Caution should be taken in moving and
positioning equipment. The instructions contained within this safety manual are
deemed important and should be closely always followed during installation
and follow-up maintenance of the UPS and batteries.
CAUTION!
The unit has a dangerous amount of voltage. If the UPS indicator is on, the
unit’s outlets may have a dangerous amount of voltage even when not plugged
into the wall outlet because the battery may continue to supply power.
Care should be taken to undertake installation indoors, free from electrically
conductive particles which are under temperature and humidity control, to
reduce the risk of electric shock.
It is best to disconnect the device using the power supply cord. Ensure that the
equipment is placed in a position near the outlet where easily accessible.
Except for replacing the batteries, all servicing on this equipment must be
carried out by qualified service personnel.
Before conducting any maintenance, repair, or shipment, first ensure that
everything is turned off completely and disconnected.
For additional safety instructions, see the Safety section of the Service Manual.
Table 1 Batteries Quantity
Model
Rating
SolarEdge P/N
Description
L10US
10 kVa
L10US-IB20
UPS 10kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 20x9Ah
L10US
10 kVa
L10US-IB40
UPS 10kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 40x9Ah

6
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
L10US
10 kVa
L10US-IB60
UPS 10kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 60x9Ah
L10US
10 kVa
L10US-IB00
UPS 10kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Long run for external
batteries
L15US
15 kVa
L15US-IB40
UPS 15kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 40x9Ah
L15US
15 kVa
L15US-IB60
UPS 15kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 60x9Ah
L15US
15 kVa
L15US-IB00
UPS 15kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Long run for external
batteries
L20US
20 kVa
L20US-IB60
UPS 20kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Build-in 60x9Ah
L20US
20 kVa
L20US-IB00
UPS 20kVA, UL standard, pf 1.0, 3-level
inverter, ±120V, Long run for external
batteries

7
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
3. UPS installation precautions
If the UPS you purchased is a standard model with internal batteries in it, due to the battery
leakage current, the built-in batteries of the standard machine is disconnected from the UPS
when it was shipped out of the factory. For built in batteries, you will need to charge the
batteries before you activate the system.
Therefore, professional after-sales staff must connect the built-in battery to UPS in strict
accordance with the following operations before installation:
NOTE!
before the operation, make sure to take all proper insulation measures, non-
professional personnel are prohibited from the following operation, there is a
risk of electric shock!
1. Remove the 6 fixing screws of the rear mesh plate and remove the rear mesh plate.
Figure 1 Remove covers
2. Remove the fixing screws of the lower battery terminal fixing plate on the middle
separator.

8
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Figure 2 Remove fixing screws
3. Push the battery terminal fixing plate upward together with the battery terminal until so
it is just buckled with the upper battery terminal.
NOTE!
After the connection, the external battery terminal of the rear panel will also be
charged.)

9
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
Figure 3: Connector Operation
4. Fix the lower battery terminal fixing plate with screws.
Figure 4 Battery terminal docking

10
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
5. Fix the rear side plate with screws.
Figure 5 Install covers

11
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
4. Main features
4.1. Summary
This series UPS is a kind of 3-phase input/ 3-phase output-out high frequency online UPS.
The UPS can solve most of the power supply problems, such as blackout, over-voltage,
under-voltage, voltage sudden drop, oscillating of decreasing extent, high voltage pulse,
voltage fluctuation, surge, inrush current, harmonic distortion (THD), noise interference,
frequency fluctuation, etc.
This UPS can be applied to different applications from computer device, automatic
equipment, communication system to industry equipment.
4.2. Functions and Features
3 Phase In/3 Phase Out UPS
It is 3 Phase In/3 Phase Out high-density UPS system, of which input current is kept in
balance. No unbalance problem might occur.
Digital Control
This series UPS is controlled by Digital Signal Processor (DSP); hence it increases reliability,
performance, self-protection, self-diagnostics and many more.
Battery is Configurable
The battery voltage of this series UPS is configured to 20 blocks.
Charging Current is configurable
Through the user interface, the user may set the capacity of the batteries as well as
reasonable charging current as well as maximum charging current. Constant voltage mode,
constant current mode or floating mode can be switched automatically and smoothly.
Intelligent Charging Method
The L series UPS adopts advanced three-stage charging methods
•1st stage: high current constant current charging to guarantee to charge back to 90%.
•2nd-stage: Constant Voltage in order to vitalize battery and make sure batteries are fully
charged.
•3rd stage: floating mode.
This 3-stage charging method will extend life of the batteries and guarantee fast charging.

12
L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40,
L15US-IB60 L15US-IB00, L20US-IB60, L20US-IB00 UPS
LCD display
With LCD plus LED display, the user can easily understand the UPS status and its operational
parameters, such as input/output voltage, frequency & load %, battery % and ambient
temperature, etc.
Intelligent monitoring function
Using the optional SNMP Card (optional for extra charge), you may remotely control and
monitor the UPS.
REPO function
REPO function (Remote EPO) is available in this series UPS.
4.3. System configuration
UPS device, external or internal batteries make up the system. Depending on the site and
load requirements of the installation, certain additional options are available for the solution.
Planning a UPS system, the following should be taken into consideration:
•The total demand of the protected system shall dictate the output power rating (VA).
Allow a margin for future expansion or calculation inaccuracies from measured power
requirements.
•Backup time required will indicate the battery size needed. If the load is less than the UPS
nominal power rating, then actual backup time is longer.
•The following options are available with extra charge:
•SNMP/WEB card
•Parallel connection