Fimer UNO-DM-3.3-TL-PLUS-US-Q User manual

Product Manual
UNO-DM-3.3/3.8/4.6/5.0-
TL-PLUS-US-Q

2
001062BG-F
IMPORTANT SAFETY INSTRUCTIONS
This manual contains important safety instructions that must be followed during the installation
and maintenance of the equipment.
SAVE THESE INSTRUCTIONS!
Keep this document in a safe place near the inverter for easy access during installation, ope-
ration and maintenance.
THE INSTALLER MUST READ THIS DOCUMENT IN ITS ENTIRETY BEFORE INSTALLING
THIS EQUIPMENT.
Operators are required to read this manual and scrupulously follow the instructions given in it,
since FIMER cannot be held responsible for damage caused to people and/or things, or the
equipment, if the conditions described below are not observed.
The purpose of this document is to support the qualied technician, who has received training
and/or has demonstrated skills and knowledge in construction, to install, operate and maintain
the inverter. This manual covers only inverter, not any equipment (photovoltaic modules, external
disconnects, etc) to which it is connected.
Warranty requirements are included in the Terms and Conditions of sale included with the
inverter order.
NOTE: Any changes made to the product or to the installation conditions that hasn’t been
approved by FIMER will void the warranty.
All pictures and illustrations shown in this user manual are indicatives and must be intended as
support for installation instruction only. Actual product may vary due to product enhancement.
Specications subject to change without notice. The latest version of this document is availa-
ble on the FIMER website.
FCC REMARKS
The equipment has been tested and found to comply with the limits for a Class B digital de-
vice, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment o and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.

3
001062BG-F
The products are designed to be connected to and to communicate information and data via
a network interface. It is the user’s sole responsibility to provide and continuously ensure a
secure connection between the product and the user’s network or any other network (as the
case may be). The user shall establish and maintain any appropriate measures (such as but
not limited to the installation of rewalls, application of authentication measures, encryption
of data, installation of anti-virus programs, etc) to protect the product, the network, its system
and the interface against any kind of security breaches, unauthorized access, interference,
intrusion, leakage and/or theft of data or information. FIMER and its aliates are not liable for
damages and/or losses related to such security breaches, any unauthorized access, inter-
ference, intrusion, leakage and/or theft of data or information. The data, examples and dia-
grams in this manual are included solely for the concept or product description and are not to
be deemed as a statement of guaranteed properties. All persons responsible for applying the
equipment addressed in this manual must satisfy themselves that each intended application
is suitable and acceptable, including that any applicable safety or other operational require-
ments are complied with. In particular, any risks in applications where a system failure and/or
product failure would create a risk for harm to property or persons (including but not limited to
personal injuries or death) shall be the sole responsibility of the person or entity applying the
equipment, and those so responsible are hereby requested to ensure that all measures are
taken to exclude or mitigate such risks. This document has been carefully checked by FIMER
but deviations cannot be completely ruled out. In case any errors are detected, the reader
is kindly requested to notify the manufacturer. Other than under explicit contractual commit-
ments, in no event shall FIMER be responsible or liable for any loss or damage resulting from
the use of this manual or the application of the equipment.

4
001062BG-F
Product manual
UNO-DM-3.3_3.8_4.6_5.0-TL-PLUS-US-Q
1 - Safety and accident prevention
2 - Introduction and general information
3 - Characteristics
4 - Lifting and transport
5 - Installation
6 - Instruments
7 - Operation
8 - Maintenance
9 - Attachments
UNO-DM-3.3_3.8_4.6_5.0-TL-PLUS-US-Q Product manual EN-RevB (M000050BG)
EFFECTIVE 26/05/2021
© Copyright 2021 FIMER. All Rights Reserved.

5
001063BG-F
Table of Contents....................................................................................................................................5
Safety and accident prevention ........................................................................................................ 9
Safety information and instructions ....................................................................................................9
Symbols and signs...............................................................................................................................10
Installation and maintenance safety ..................................................................................................11
General safety information.................................................................................................... 11
Environmental conditions and risks ...................................................................................... 11
Electrical and thermal safety.................................................................................................12
Clothing and protection of personnel....................................................................................13
Residual risks .......................................................................................................................................14
Table of residual risks ...........................................................................................................14
Introduction and general information............................................................................................. 15
Warranty and supply conditions.........................................................................................................15
Not included in the supply.....................................................................................................15
Scope and target audience..................................................................................................................16
Purpose and document structure .........................................................................................16
List of appendix documents ..................................................................................................16
Operator and maintenance personnel skills/prerequisites ...................................................16
Application area, general conditions ................................................................................................17
Intended or allowed use........................................................................................................17
Limits in field of use...............................................................................................................17
Improper or prohibited use ...................................................................................................17
Characteristics .................................................................................................................................. 18
General conditions ...............................................................................................................................18
Models and range of equipment .........................................................................................................19
Identification of the equipment and manufacturer ................................................................20
Reference number index .....................................................................................................................22
Graphical representation of references.............................................................................................22
Accessory Board UNO-DM-COM KIT (optional)................................................................................23
Accessory Board UNO-DM-PLUS-COM Ethernet KIT (optional).....................................................23
Technical data .......................................................................................................................................24
Response to abnormal conditions ........................................................................................28
Grid support function.............................................................................................................29
Torques .................................................................................................................................31
Outer dimensions..................................................................................................................31
Bracket dimensions...............................................................................................................32
Efficiency curves ..................................................................................................................................33
Power limitation (Power Derating)......................................................................................................35
Power reduction due to environmental conditions................................................................35
Power reduction due to the input voltage .............................................................................36
Characteristics of a photovoltaic generator......................................................................................37
Strings and arrays.................................................................................................................37
Table of Contents

6
001063BG-F
Description of the inverter...................................................................................................................38
Multiple-inverter system ........................................................................................................38
Notes on system sizing.........................................................................................................38
Inverter block diagram ..........................................................................................................38
PV plant block diagram........................................................................................................40
Operating diagram ................................................................................................................40
Default functionality and components of the inverter ..........................................................41
Functionalities available with accessory board ...................................................................42
Safety devices.......................................................................................................................................44
Anti-Islanding ........................................................................................................................44
Photovoltaic panel ground fault ............................................................................................44
Arc Fault Detection (AFD).....................................................................................................44
Ground fault detection and interruption scheme .................................................................44
Other safeguards ..................................................................................................................45
Lifting and transport......................................................................................................................... 46
Transport and handling .........................................................................................................46
Lifting.....................................................................................................................................46
Unpacking and incoming inspection .....................................................................................46
Storage..................................................................................................................................47
Weights .................................................................................................................................47
Lifting.....................................................................................................................................47
Packing list ............................................................................................................................48
Installation ......................................................................................................................................... 49
Installation warnings ...........................................................................................................................49
Installation site and position..................................................................................................50
Installation sites with high humidity ......................................................................................51
Wireless signal environmental checks..................................................................................52
Recommendations for the wireless signal power.................................................................54
Wall mounting .......................................................................................................................................55
Opening the front cover.......................................................................................................................56
Installation planning.............................................................................................................................57
AC overcurrent protection.....................................................................................................57
Choice of grid output connection type (AC side) ..................................................................57
Sizing the ground cable(s) ....................................................................................................58
Sizing the AC cable...............................................................................................................58
Clamps terminal use .............................................................................................................59
Preliminary operations for connection of the PV generator ...........................................................60
Independent or parallel input channels configuration...........................................................60
Channel configuration examples ..........................................................................................61
Independent channel configuration (default configuration) ..................................................62
Parallel channel configuration ..............................................................................................62
Checking the correct polarity of the strings ..........................................................................63
Checking of leakage to ground of the photovoltaic generator..............................................63
Electrical connection to the PV field - DC side .................................................................................64
Grid output connection (AC side).......................................................................................................66
Connection to AC terminal block...........................................................................................66
Grid standard setting of the country......................................................................................67
Rapid Shutdown (RSD) connection....................................................................................................68

7
001063BG-F
Communication and control signal connections to the accessory UNO-DM-COM KIT board ...69
Description of terminal blocks on the UNO-DM-COM KIT board ........................................70
Description of terminal blocks on the UNO-DM-PLUS-COM Ethernet KIT board ...............71
Connection of the RS485 line...............................................................................................................72
Remote control connection ...................................................................................................74
Demand Response Mode 0 (Request by AS/NZS 4777).....................................................74
Configurable Relay connection (ALARM / LOAD MANAGER) ...........................................75
Closing the front cover ........................................................................................................................76
Instruments........................................................................................................................................ 77
Description LED Panel.........................................................................................................78
Operation ........................................................................................................................................... 79
Introduction and operation warnings ................................................................................................79
Monitoring and data transmission .....................................................................................................80
User interface........................................................................................................................80
Measurement tolerance ........................................................................................................80
Commissioning (Via internal Webserver) ..........................................................................................81
Power, Alarm, GFI LEDs behavior ......................................................................................................89
COMM, WLAN LEDs behavior.............................................................................................................90
Description of the internal Webserver ...............................................................................................91
Access to the internal Webserver.........................................................................................91
webserver menu structure ....................................................................................................94
MAIN section.........................................................................................................................95
SETTING section ..................................................................................................................96
Inverter Log Section............................................................................................................100
USER section......................................................................................................................101
CONNECTIVITY section.....................................................................................................102
SERVICE TOOLS section...................................................................................................106
Information .........................................................................................................................109
Maintenance .....................................................................................................................................110
General conditions .............................................................................................................................110
Inverter total de-energization and safe access............................................................................... 111
Operator and maintenance personnel skills/prerequisites ................................................. 111
Clothing and protection of personnel.................................................................................. 112
Safety equipment and tools ................................................................................................ 112
Inverter total de-energization and safe access procedure ................................................. 113
Routine maintenance .........................................................................................................................122
Troubleshooting .................................................................................................................................123
Internal Web user interface and wireless communication troubleshooting........................123
Alarm Messages of the Inverter..........................................................................................125
Power limitation messages .................................................................................................132
Calculation of second-level password (Service menu, Admin Plus) ...........................................133
Dismantling the inverter ...................................................................................................................134
Replacement of the MEMORY board................................................................................................135
Replacement of the buffer battery....................................................................................................136
Verification of ground leakage .........................................................................................................137
Behavior of a system without leakage ................................................................................137
Behavior of a system with leakage .....................................................................................138
Measuring the insulation resistance of the PV generator. ............................................................139

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001063BG-F
Storage and dismantling ..................................................................................................................140
Storage of an uninstalled inverter for long periods.............................................................140
Storage of an installed inverter for long periods of non-use...............................................140
Disposal...............................................................................................................................140
Attachments .................................................................................................................................... 141
Port and network services used by the inverter.............................................................................141
IP Network Services............................................................................................................141
Network Hosts.....................................................................................................................142
Inverter network configuration ............................................................................................142
Contact us ...........................................................................................................................................143

9
000913AG-F
Safety information and instructions
This chapter contains the safety instructions which you must obey when
you install and operate the inverter and perform maintenance operations
on the inverter. Obey these safety instructions to prevent injury or death,
or damage to the equipment.
The instructions provided in the manual do not replace the safety devices
and technical data for installation and operation labels on the product,
and they do not replace the safety regulations in force in the country of
installation.
The operators must read and comply with the technical information and
instruction provided in the manual and in the attached documentation.
FIMER accepts no liability for failure to comply with the instructions for
correct installation and cannot be held responsible for the upstream or
downstream equipment.
Specic safety information are provided during installation, commissio-
ning and maintenance operation instructions. Always follow the reading
order of instruction exactly as described in this manual.
1
Safety and accident prevention

10
001064AG-F
1 - Safety and accident prevention
Symbols and signs
In the manual and/or in some cases on the equipment, the danger are
indicated with signs, labels, symbols or icons.
Symbol Description
General warning - Important safety information. Indicates a potentially
hazardous situation which, if not avoided, could result in death or serious
injury.
Dangerous Voltage - Indicates a potentially hazardous situation, in par-
ticular a high voltage, which, if not avoided, could result in death or se-
rious injury. The inverter has high voltages and energy levels.
Hot parts - Indicates a potentially hazardous situation, in particular a
hot surface, which, if not avoided, could result in death or serious injury.
Some surfaces in the inverter will become hot during operation and must
not be touched until the parts have cooled down.
Risk of injury due to the weight of the equipment. Take care during lifting
and transport
Ground connection point.
Rated temperature range.
DC
Direct current.
AC
Alternating current.
The DC input voltage positive terminal.
The DC input voltage negative terminal.

11
001065AG-F
1 - Safety and accident prevention
Installation and maintenance safety
General safety information
Do not proceed with installation if the integrity of the equipment is compromised. Do not use
the equipment if you nd any operating anomalies.
Avoid temporary repairs. All repairs should be carried out using only genuine spare parts,
which must be installed in accordance with their intended use.
The labels afxed on the equipment must strictly NOT be removed, damaged, defaced, hid-
den, etc.The technical data provided in this manual does not in any case replace that shown
on the labels afxed on the equipment
Do not do work on the photovoltaic generator, or the inverter, or its input or output cables, when
the inverter is connected to an electrical power system, or to the photovoltaic generator.
Before performing any maintenance operation on the inverter, follow this steps:
• Prepare the work: Do an on-site Risk Assessment or Job Hazard Analysis (Check for
proper tools and PPE for the Job; Engage the person responsible for electrical equipment or
system to review single-line, schematics, switching plans; Decide on the appropriate work
methods and initiate the permit to work process).
• Clearly identify the work location and equipment.
• Disconnect all sources and Secure against reconnection by means of a ‘Lockout/
Tagout procedure to ensure it cannot accidentally become live.
• Verify the absence of operating voltage (This must be by means of a proper test instrument).
• Complete the permit to work and “Walk the Permit” (Now we have veried a ‘safe working
area’ it is time to validate the ‘Permit to Work’ and “Walk the Permit”).
Refer to “Inverter total de-energization and safe access” chapter on this manual to
know all detailed necessary steps to safely operate on the inverter.
Environmental conditions and risks
The device can be installed outdoors, but only in environmental conditions that do not prevent its
regular operation. These conditions are listed in the technical data and in the installation chapter.
Do not open the front covers of the inverter when it is raining, or when sand or dust can blow
into the unit. Water or sand in the inverter can cause damage in the unit. In the risk assessment
prior any intervention on the equipment it is of paramount importance to evaluate the weather
conditions. Any intervention on the inverter can be done only in case of dry environment. Don’t
proceed in case of rain (even light) or high humidity.
The device is not designed to operate in environments that are particularly inammable or
explosive.
In the event of re, use CO2 extinguishers and auto-extraction systems to extinguish the re
in closed environments.
The installer or maintenance technician must always pay attention to the work environment,
ensuring that it is well-lit and there is enough room to ensure an escape route.

12
001065AG-F
1 - Safety and accident prevention
Electrical and thermal safety
WARNING! Obey these instructions to prevent injury or death, or damage to the
equipment. If you are not a qualied electrician, do not perform any electrical installation
or maintenance work.
Obey all installation safety standards. This can require, among other things, the use of
personal protection equipment (PPE), such as arc-proof clothing, arc-proof masks, protective
footwear, insulating and protective gloves, eye protection and hearing protection. High power
inverter installations have high fault currents.
Before you operate on the inverter, isolate the AC line cables from the electrical power system
with the AC disconnect switch of the power system transformer (downstream the inverter). Also,
isolate the inverter from the photovoltaic generator with the DC disconnect switch of the generator
or by other means (upstream the inverter). The internal AC disconnect switch (if present) do not
isolate the AC output cables and terminals of the inverter from the electrical power system. The
internal DC disconnect switches (if present) do not complete isolate the DC input cables or
terminals from the DC voltage supplied by the photovoltaic generator. Refer to “Inverter total
de-energization and safe access” chapter on this manual for further details.
Do not work on the communication and control signal cables when power is applied to the
inverter or to the external control circuits.
Do not perform insulation or voltage withstand tests on the inverter.
FIMER inverters must be earthed via the connection points marked with the protective earth
symbol and using a cable with an appropriate conductor cross-section for the maximum
ground fault current that the generating system might experience.
Do not switch-on the inverter with the front covers open, even during troubleshooting. The
inverter front covers act as arc hazard protection. If a highly unlikely arc ash incident occurs
when the inverter front covers are open, the arc-ash proof protection equipment might not
provide sufcient protection for the operators.
When the device has just been switched off, it may have hot parts as a result of overheating
of the heated surfaces (e.g.: transformers, accumulators, coils, etc.) so be careful where you
touch.

13
001065AG-F
1 - Safety and accident prevention
Clothing and protection of personnel
NFPA standards (which OSHA recommends and consults) require the
equipment owner to eld-label electrical equipment with labels contai-
ning the available incident energy and required level of PPE, to protect
both in-house and contract workers from electric shock and arc ash.
Label requirements are determined by site-specic arc ash studies and
depend on the inverter model, types and exact locations of external di-
sconnects upstream and downstream of the inverter, by voltages and
power levels at any given installation.
NFPA 70E Article 130.3 states that the analysis must be reviewed at least
every 5 years or whenever a major modication occurs. This means that
the label should include a date, and the date must be documented.
The system is not ready for commissioning until PPE labels have been
installed.
Personnel must not wear clothes or accessories that could start res or
generate electrostatic charges or, in general, clothing that can compro-
mise personal safety.

14
001066AG-F
1 - Safety and accident prevention
Residual risks
Despite the warnings and safety systems, there are still some residual
risks that cannot be eliminated.
These risks are listed in the following table with some suggestions to
prevent them.
Table of residual risks
RISK ANALYSIS AND DESCRIPTION SUGGESTED REMEDY
Noise pollution due to installation in unsuitable environments or where
individuals routinely work and/or animals dwell most of the time.
Reassess the environment or the
place of installation.
Suitable local ventilation that does not cause overheating of the
equipment and is sufcient not to create discomfort to people in the
room.
Restore suitable ambient condi-
tions and air the room.
External weather conditions, water seepage, low temperatures, high hu-
midity, etc.
Maintain ambient conditions sui-
table for the system.
Overheating of surfaces at temperature (transformers, coils, etc. ) can
cause burns.
Use suitable PPE. Wait for the
parts to cool down before opening
the inverter. Do not restrict cooling
openings or heatsinks.
Inadequate cleaning compromises cooling and does not allow the safety
labels to be read.
Clean the equipment, labels and
work environment
Accumulation of electrostatic energy can generate hazardous dischar-
ges.
Ensure components have di-
scharged their energy before wor-
king on them.
Inadequate training of staff. Ask for a supplementary course.
During installation, temporarily mounting the equipment or its compo-
nents may be risky.
Prevent unauthorized access to
the installation area. Use suf-
cient people and PPE.
Accidental disconnections of the quick-t connectors with the equipment
in operation, or wrong connections, may generate electric arcs
Prevent unauthorized access to
the installation area and lock out/
tag out the inverter before working
on it.
Use the same brand for the counterparts of the quick-t connectors in-
stalled on the inverter
Mismatched connectors may void
the warranty and cause potential
damage

15
000917AG-F
Warranty and supply conditions
The warranty conditions (available on the ofcial FIMER website) are
considered to be valid if the Customer adheres to the indications in this
manual; any condition deviating from those described herein must be
expressly agreed in the purchase order.
FIMER declares that the equipment complies with the provisions of law currently in force in
the country of installation and has issued the corresponding declaration of conformity.
Not included in the supply
FIMER accepts no liability for failure to comply with the instructions for correct installation
and will not be held responsible for systems upstream or downstream of the equipment it has
supplied.
It is absolutely forbidden to modify the equipment. Any modication, manipulation, or alte-
ration not expressly agreed with the manufacturer, concerning either hardware or software,
shall result in the immediate cancellation of the warranty.
The customer is fully responsible for any changes made to the system.
Given the countless array of system congurations and installation envi-
ronments possible, it is essential to check the following: adequate spa-
ces, suitable for housing the equipment; airborne noise produced based
on the environment; possible ammability conditions.
FIMER will NOT be held liable for defects or malfunctions arising from:
improper use of the equipment; deterioration resulting from transporta-
tion or particular environmental conditions; performing maintenance in-
correctly or not at all; tampering or unsafe repairs; use or installation by
unqualied persons.
FIMER is not responsible for any loss of the equipment, or part of it,
which does not take place on the basis of the regulations and laws in
force in the country of installation.
2
Introduction and general information

16
000918BG-F
2 - Introduction and general information
Scope and target audience
Purpose and document structure
This operating and maintenance manual is a useful guide that will enable
you to work safely and carry out the operations necessary for keeping the
equipment in good working order.
If the equipment is used in a manner not specied in this manual, the protections and the cer-
tications provided by the equipment may be impaired with the consequent loss of warranty.
The language in which the document was originally written is ENGLISH; therefore, in the event
of inconsistencies or doubts please ask the manufacturer for the original document.
List of appendix documents
In addition to this user manual and maintenance you can consult (and
download) the product documentation by visiting www.mer.com.
Part of the information given in this document is taken from the original supplier documents.
This document contains only the information considered necessary for the use and routine
maintenance of the equipment.
Operator and maintenance personnel skills/prerequisites
Personnel in charge of using and maintaining the equipment must be skilled for the described
tasks and must reliably demonstrate their capacity to correctly interpret what is described in
the manual.
For safety reasons, the installation must be performed by qualied installers and/or licensed
electricians in accordance with the existing regulations in the country of installation and in
accordance to all safety rules for performing electrical works. The installers must have demon-
strated skills and knowledge of the inverter’s structure and operation.
Inverter operation and maintenance by a person who is NOT qualied, is intoxicated, or on
narcotics, is strictly forbidden.
The customer has civil liability for the qualication and mental or physical state of the person-
nel who interact with the equipment. They must always use the personal protective equipment
(PPE) required by the laws of the country of destination and whatever is provided by their
employer.

17
000919AG-F
2 - Introduction and general information
Application area, general conditions
FIMER shall not be liable for any damages whatsoever that may result
from incorrect or careless operations.
You may not use the equipment for a use that does not conform to that provided for in the
eld of use. The equipment MUST NOT be used by inexperienced staff, or even experienced
staff if carrying out operations on the equipment that fail to comply with the indications in this
manual and enclosed documentation.
Intended or allowed use
This equipment is a inverter designed for:
transforming a continuous electrical current (DC)
supplied by a photovoltaic generator (PV)
in an alternating electrical current (AC)
suitable for feeding into the public distribution grid.
Limits in field of use
The inverter can be used only with photovoltaic modules which have ground isolated input
poles.
Only a photovoltaic generator can be connected in the input of the inverter (do not connect
batteries or other sources of power supply).
The inverter can be connected to the electricity grid only in countries for which it has been
certied/approved.
The inverter cannot be connected to the DC side in parallel to other inverters.
The inverter may only be used in compliance with all its technical characteristics.
Improper or prohibited use
IT IS STRICTLY FORBIDDEN TO:
• Install the equipment in environments subject to particular conditions of ammability or in
adverse or disallowed environmental conditions, (temperature and humidity).
• Use the equipment with safety devices which are faulty or disabled.
• Use the equipment or parts of the equipment by linking it to other machines or equipment,
unless expressly provided for.
• Modify operating parameters that are not accessible to the operator and/or parts of the
equipment to vary its performance or change its isolation.
• Clean with corrosive products that could corrode parts of the equipment or generate elec-
trostatic charges.
• Use or install the appliance or parts of it without having read and understood the contents of
the user and maintenance manual.
• Placing any heavy object, sit or stand up on the inverter.
• Heat or dry rags and clothing on the parts in temperature. In addition to being hazardous,
doing so would compromise component ventilation and cooling.

18
000920AG-F
General conditions
A description of the equipment characteristics is provided to identify its
main components and specify the technical terminology used in the ma-
nual.
This chapter contains information about the models, details of the
equipment, characteristics and technical data, overall dimensions and
equipment identication.
The customer/Installer takes full responsibility if, when reading this manual, the chronological
order of its presentation provided is not observed. All information is provided considering
occasional inclusion of information in previous chapters.
In certain cases, there may be a need to separately document softwa-
re functionality or attach supplementary documentation to this manual
which is intended for more qualied professionals.
3
Characteristics

19
001067BG-F
3 - Characteristics
Models and range of equipment
The models of single-phase inverters covered by this manual are divided
for their maximum output power:
3.3kW, 3.8kW, 4.6kW and 5.0kW.
For each model, the following variant is available:
- Standard Models (e.g. UNO-DM-3.3-TL-PLUS-US-B-RA-Q).
Models equipped with:
- Wireless communication
- Rapid Shutdown Power Supply
- Arc fault detector
- Models with “U” su󰀩x (UNO-DM-5.0-TL-PLUS-US-SB-RA-QU only)
- Wireless communication
- DC disconnection switch
- Rapid Shutdown Power Supply
- Arc fault detector
- Unbalanced input channels
The choice of the inverter model must be made by a qualied technician who knows about
the installation conditions, the devices that will be installed outside the inverter and possible
integration with an existing system.

20
001067BG-F
3 - Characteristics
Identification of the equipment and manufacturer
The technical data provided in this manual does not substitute the data
supplied on the labels a󰀩xed to the equipment.
The labels axed to the equipment must NOT be removed, damaged, stained, hidden, etc.,
for any reason whatsoever.
The Regulatory label contains the following information:
1. Manufacturer
2. Model
3. Rating data
4. Certication marks
5. Inverter Part Number
6. Week/Year of manufacture
7. Inverter Serial Number consisting of:
- YY = Year of manufacture
- WW = Week of manufacture
- SSSSSS = sequential number
SOLAR GRID SUPPORT UTILITY INTERACTIVE
TRANSFORMERLESS INVERTER
MODEL: UNO-DM-X.X-TL-PLUS-US-Q
UL 1741
CSA-C22.2 No. 107.1
Country of Origin Italy
For more details about product specifications refer to the Instruction Manual
DC Ground Fault Detector/Interrupter is Provided Photovoltaic Arc-Fault Circuit Protection-Type1
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TypeofEnclosure:NEMA 4X
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesidered operation.
Rated Grid AC Voltage (Vacr)
AC RATING
Operating Voltage Range
Nominal Output Frequency
Operating Frequency Range
Power Factor
Nameplate Apparent Power (Smax)
RatedActivePower(@Vacr, cosφ=±0.9)
cosφAdjustability Range
Max. Output Current
Max. Output Overcurrent Protection
NameplateActivePower(Pmax@cosφ= 1)
Contains FCC ID: Contains FCC ID: Z7H-EMB2538PA
Nominal Input Operating Voltage
DC RATING
Max. Input Voltage
Range of Input Operating Voltage
Range of Input Voltage @Full Power
Max. Input Current - per channel
Max.InputShortCircuitCurrent-perchannel
PN: PPPPPPPPPPP WO:XXXXXXXXXXXX
SO: SXXXXXXXX
QXX
SN:YYWWSSSSSS
Fimer S.p.A.
Via Tortona, 25 – I 20144 Milano (MI)
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