Renac R3 Micro Series User manual

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Content
1. Introduction.......................................................................................................................................2
1.1 Introduction..................................................................................................................................2
1.2 Applied designations ...................................................................................................................2
1.3 Important safety information........................................................................................................3
1.4 System sizing..............................................................................................................................3
1.5 Product label ...............................................................................................................................4
2. Technical description of inverters......................................................................................................5
2.1 Mechanical design.......................................................................................................................5
2.2 Electrical system design..............................................................................................................6
2.3 Technical data.............................................................................................................................6
2.4 Grid codes...................................................................................................................................8
3. Installation and startup......................................................................................................................9
3.1 Package information....................................................................................................................9
3.2 Installation environment...............................................................................................................9
3.3 Installation position....................................................................................................................10
3.4 Mounting procedure...................................................................................................................11
3.5 Electrical connection..................................................................................................................12
3.6 Starting the Inverter...................................................................................................................15
4. User Interface.................................................................................................................................15
4.1 Led and key...............................................................................................................................15
4.2 LCD display...............................................................................................................................16
4.3 Factory setting...........................................................................................................................17
4.4 Setting language .......................................................................................................................17
4.5 Setting modbus address............................................................................................................17
4.6 Self-Test in accordance with CEI 0-21 (Applies to Italy only).....................................................17
5. Warranty.........................................................................................................................................19
5.1 Warranty claim procedure..........................................................................................................19
5.2 Service after warranty expiration ...............................................................................................19
Appendix A: FAQ (Frequently asked questions)..................................................................................20

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1. Introduction
1.1 Introduction
This manual describes solar inverters ：
R3-4K-DT/R3-5K-DT /R3-6K-DT/R3-8K-DT/R3-10K-DT/R3-12K-DT/R3-15K-DT.
These inverters are transformerless based inverter.
Please read the safety instructions in this manual first. Throughout the manual it is assumed that the reader is
familiar with AC and DC installations and knows the rules and regulations for electrical equipment and for
connecting it to the utility AC grid. It is especially important to be familiar with the general safety rules for
working with electrical equipment.
1.2 Applied designations
Throughout the manual important information is shown at different levels depending on the character of the
information, as shown here:
Safety information important for human safety. Violation of warnings may result in injury to
persons or death.
Danger of high voltage and electric shock!
Signals danger due to electrical shock and indicates the time (5 minutes) to allow after the
inverter has been turned off and disconnected to ensure safety in any installation
operation.
Danger of hot surface!
Product should not be disposed as normal household waste.
CE Mark
RoHS
ROHS Mark
Information important for the protection of property. Violation of this type of information
may cause damage and loss of property.
Useful additional information or “Tips and Tricks" on specific subjects.

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1.3 Important safety information
Read this before installing, operating or maintaining the inverter.
Before installation:
Check for damage to inverter and packaging. If you are in doubt, please contact your
supplier before installing the inverter. Check the voltages of the solar modules and make
sure they are within the limits of the inverter specifications before connecting them to the
inverter.
Installation:
Only trained and authorized personnel familiar with local electrical codes may install the
inverter. For optimum safety, please follow the steps described in this manual. Keep in
mind that the inverter has two voltage carrying sides, the PV input and the AC grid.
Disconnecting the inverter:
Always disconnect the AC line first! Afterwards disconnect the PV lines. Note that the
inverter can still be charged with very high voltages at hazardous levels even when it is
disconnected from grid and solar modules. Wait at least 5 min. before proceeding, after
having disconnected from grid and PV panels.
Operating the inverter:
Before connecting the AC grid to the inverter, make sure that the installation cover is
mounted again. The inverter must not be open during operation.
Maintenance and modification:
Only authorized personnel are allowed to repair or modify the inverter. To ensure optimum
safety for user and environment, only the original spare parts available from your supplier
should be used.
Functional safety parameters:
Unauthorized changes of functional safety parameters may cause injury or accidents to
people or inverter. Additionally it will lead to the cancelling of all inverter operating
approval certificates.
1.4 System sizing
When dimensioning a photovoltaic system, it must be ensured that the open circuit voltage
of the PV string never exceeds the maximum permissible input voltage of 1000V DC. The
PV string open circuit voltage during parallel string operation is 950V. Higher voltages may
result in permanent damage to the inverter.
The selection of PV string output should be based on the optimum utilization of the invested capital compared
to the expected annual energy yield from the system. This optimization depends on local weather conditions
and should be considered in each individual case.
The inverter incorporates an input power limiting device, which automatically keeps the power at levels that
are safe for the inverter. The limitation depends mainly on internal and ambient temperatures. The limitation is
calculated continuously and always allows the maximum possible amount of energy to be produced.
Please use the tool supplied by Renac Power when dimensioning a photovoltaic system.

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1.5 Product label
The product label provides basic information for the inverter, which is attached to the right side of the inverter.
Pay special attention to the type of inverter and other specifications.

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2. Technical description of inverters
2.1 Mechanical design
Figure 2-1 shows the outline dimensions of R3-4K-DT/R3-5K-DT/ R3-6K-DT/R3-8K-DT/R3-10K-DT/R3-12K-
DT/R3-15K-DT:
Figure 2-1 Outline dimensions
Figure 2-1 shows the electrical terminals of R3-4K-DT/R3-5K-DT/R3-6K-DT/R3-8K-DT/R3-10K-DT/R3-12K-
DT/R3-15K-DT:
Figure 2-1 Electrical Terminals
1
DC Switch
2
DC (PV terminals)
3
I/O port
4
Communication port
5
AC terminal
6
LCD
7
LEDs （Run/Fault）
8
Key
For safety reasons, the use of a DC switch is recommended. Between the PV modules and
the power modules may be mandatory in some countries.

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2.2 Electrical system design
Figure 2-2 wiring diagram of the inverter system
Please refer to chapter 3 for the detail connecting and install methods.
2.3 Technical data
Model
R3-4K
-DT
R3-5K
-DT
R3-6K
-DT
R3-8K
-DT
R3-10K
-DT
R3-12K
-DT
R3-15K
-DT
DC Input Data
Max. Recommended PV
Power
5200
Wp
6500
Wp
7800
Wp
10400
Wp
13000
Wp
15600
Wp
19500
Wp
Max.DC Input Voltage
1000V
MPPT voltage Range
160~950V
250~950V
Start-up Voltage
160V
160V
160V
200V
200V
200V
200V
No. of MPP Trackers
2
No. of Input Strings per
Tracker
1/1
1/1
1/1
1/1
1/1
1/1
2/1
Max. DC Input Current
12.5A/
12.5A
12.5A/
12.5A
12.5A/
12.5A
12.5A/
12.5A
12.5A/
12.5A
12.5A/
12.5A
20A/
12.5A
DC Switch
Integrated
AC Output Data
Rated AC Power
4000W
5000W
6000W
8000W
10000W
12000W
15000W
Max.output power
4400
VA
5500
VA
6600
VA
8800
VA
11000
VA
13200
VA
16500
VA
Max. AC Current
6.4A
8A
9.6A
12.8A
16.0A
19.2A
24.0A
Rated AC
Voltage/Range
3/PE 380, 400;+/-10%; 3/N/PE 380, 400;+/-10%;
Grid frequency/ range
50Hz/60Hz ; ±5Hz
Adjustable Power
Factor[cos φ]
0.8leading ~0.8lagging
Output THDi(@Rated
Output)
<3%
Efficiency
Max.Efficiency
98.3%
98.3%
98.3%
98.3%
98.3%
98.3%
98.3%
Euro Efficiency
97.6%
97.6%
97.6%
97.6%
97.8%
97.8%
97.8%
MPPT Efficiency
99.90%
99.90%
99.90%
99.90%
99.90%
99.90%
99.90%
Protection
DC Insulation Monitoring
Integrated

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Input Reverse Polarity
Protection
Integrated
Anti-island Protection
Integrated
Residual Current
Monitoring
Integrated
Over-heat Protection
Integrated
AC Overcurrent
Protection
Integrated
AC Short-circuit
Protection
Integrated
AC Overvoltage
Protection
Integrated
DC Surge Protection
Integrated(Type III)
AC Surge Protection
Integrated(Type III)
General Data
Size(Width*Height*Dept
h)
455x390x160mm
455x390x175mm
455x390
x190mm
Weight
16.3KG
16.3KG
16.3KG
18.3KG
18.3KG
18.3KG
21.6KG
User Interface
LCD
Communication
RS485(Standard), Wifi or GPRS
Ambient Temperature
Range
-25 ℃~ 60 ℃
Relative Humidity
0-100%
Operating Altitude
≤4000m
Standby Self
Consumption
<0.2W
Topology
Transformerless
Cooling
Natural Convection
Protection Grades
IP65
Noise
<30dB
Warranty
5 /7/10 years
Certifications&Stands
Grid Regulation
VDE-AR-N-4105, VDE 0126-1-1, PEA, AS4777, EN50549,NB/T 32004-
2013,CEI0-21,IEC61727,IEC62116,IEC60068,IEC61683,ABNT
Safety Regulation
IEC 62109-1, IEC 62109-2
EMC
EN 61000-6-1, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4, EN 61000-4-16,
EN 61000-4-18, EN 61000-4-29

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2.4 Grid codes
No.
National/Regional Grid Code
Description
1
VDE4105-DE
Germany power Grid, meet Grid standards
“VDE-AR-N-4105”.
2
CEI0-21
Italy power Grid.
3
AS4777
Australia power Grid.
4
RD1699
Spain power Grid.
5
EN50549-TR
Turkey power Grid.
6
EN50549-DK
Denmark power Grid.
7
Greece
Greece power Grid.
8
EN50549-NL
Netherland power Grid, meet Grid standards
“EN50438”.
9
C10/11
Belgium power Grid.
10
G59
UK power Grid.
11
China
China power Grid, meet Grid standards “CN-
NBT”.
12
VDE0126-FR
France power Grid, meet Grid standards “VDE
0126”.
13
EN50549-PL
Poland power Grid.
14
BDEW-DE
Germany power Grid, meet Grid standards
“BDEW-MV”.
15
VDE0126-DE
Germany power Grid, meet Grid standards
“VDE 0126”.
16
CEI0-16
Italy power Grid, meet Grid standards “CEI 0-
16”.
17
G83
UK power Grid.
18
Greece Island
Greece Island power Grid.
19
EN50549-CZ
Czech Republic power Grid, meet Grid
standards “EN50438Y2007-CZ”.
20
IEC61727
India power Grid.
21
Korea
Korea power Grid.
22
EN50549-SW
Sweden power Grid.
23
China-W
China power Grid, Grid voltage range：160-
290V. Grid frequency range：47-53HZ.
24
China-H
China power Grid, meet standards”CQC”.
25
IEC61727-IN
India power Grid, meet Grid standards
“IEC61727”.
26
Brazil
Brazil power Grid , meet Grid standards “NBT
16150”.
27
IEC61727-SL
Sri Lanka power Grid, meet Grid standards
“IEC61727”.
28
Mexico
Mexico power Grid, meet Grid standards
“IEC61727 60HZ”.
29
NZ4777
New Zealand power Grid
30
Philippines
Philippines power Grid, meet Grid standards
“IEC61727 60HZ spec”.
31
IEC61727-SL-W
Sri Lanka power Grid, Grid voltage range：
160-290V, Grid frequency range：47-53HZ.
32
PEA
Thailand power Grid.
33
PEA-W
Thailand power Grid, Grid voltage range：160-
290V, Grid frequency range：47-53HZ.
34
IEC61627-VN
Vietnam power Grid.
35
IEC61627-VN-W
Vietnam power Grid, Grid voltage range：160-
290V, Grid frequency range：47-53HZ.

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3. Installation and startup
Warning！
Before installation and maintenance, AC and DC side doesn’t carry electricity, but if DC
side is just disconnected, capacitance still contains electricity, so please wait for at least 5
minutes to ensure the capacitors completely release the energy and inverter is not
electrified.
Note！
Inverters must be installed by qualified person.
3.1 Package information
①.There are 2 PV connectors for R3-4/5/6/8/10/12K-DT and 3 PV connectors for R3-15K-DT
②.There are 2 PV connectors for R3-4/5/6/8/10/12K-DT and 3 PV connectors for R3-15K-DT
Figure 3-1 package information
3.2 Installation environment
1) In order to achieve optimal performance, the ambient temperature should be kept lower than 45 °C.
2) For the convenience of checking the LCD display and possible maintenance activities, please install
the inverter at eye level.
3) Inverters should NOT be installed near inflammable or explosive items. Any strong electro-magnetic
equipment should be kept away from installation site.
4) Product label and warning symbol shall be clear to read after installation.
5) Please do not install inverter under direct sunlight, rain and snow.
Figure 3-2 installation environment

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3.3 Installation position
1) The installation method and mounting location must be suitable for the inverter's
weight and dimensions.
2) Mount on a solid surface.
3) Select a well-ventilated place sheltered from direct sun radiation.
Figure 3-2 installation position
In consideration of heat dissipation and convenient dismantlement, the minimum clearances around the
inverter should be no less than the following value.
Figure 3-3 Distance required of Invertors

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3.4 Mounting procedure
Setp1: Drill 4 Fix Ø11 holes in the wall according to the dimensions.
Step2: Fix the wall mounting bracket on the wall with 4 expansion bolts in accessory bag.
Setp4: Place the inverter on the wall-mounted bracket and install the fix screw.
Figure 3-4 mounting the inverter

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3.5 Electrical connection
3.5.1 Connection to the grid (AC output)
1) Add breaker or fuse to AC side, the specification should be more than 1.25 times of
rated AC output current.
2) The PE line of inverter should be connected to the earth, make sure the impedance
of neutral wire and earth wire less than 10 ohm.
3) Disconnect the breaker or fuse between the inverter and the utility.
4) The integrated leakage current detection device of the inverter can detect external
leakage current in real time. When the detected leakage current exceeds the limit
value, inverter will quickly disconnect with the grid. If the leakage current protection
device is installed externally, the action current should be 300mA or higher.
Connect the inverter to the grid as follows:
1) Strip off N/L1/L2/L3 cables as figure 3-5:
A
C
D
B
Figure 3-5 Strip off N/L1/L2/L3 cables
2) Strip off PE cable as figure 3-6:
Figure 3-6 Strip off PE cables
3) Insert AC cables through cable gland from outside, Pull the cables through and fix N/L1/L2/L3/PE
cables ends to the terminals according to markings.
Fix (Torque: 2~2.5 N.m) the connector of AC cable to the corresponding terminals
No.
Description
Remark
A
Protective layer
Diameter ranges ：15-25mm
B
Length of stripped off
12mm
C
Insulate layer
50mm
D
Cross section of ac cables
6-10mm²

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Figure 3-7 Connect the inverter to the grid
4) Screw waterproof coupling and Screw cap nut tightly onto the cable.
3.5.2 Connection to PV string (DC input)
1) Before connecting PV string, make sure DC switch is turned off .
2) Make sure PV string polarity confirms with DC connector, otherwise, it will cause
damage to inverter.
3) Make sure the maximum open circuit voltage (Voc) of each PV string does not exceed
the inverter input voltage Vmax under any condition.
4) Do not connect positive or negative pole of PV string to earth wire. Otherwise, it will
cause damage to inverter.
Figure 3-8 Connect the PV string

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3.5.3 Communication
1) Please make sure the RS485 connecting cables not exceed 1000m.
2) Communication lines must be separated from other power lines to avoid
communications interference.
1) For CEI standard, DRM S0 is the DI port, corresponding to PIN5 (GND), PIN6 (DI input port) of RJ45.
2) COM port, PIN3:A, PIN4:B.
Figure 3-9 Communication Port
Figure 3-10 RS485 in multiple series
Please refer to the module user manual in detail.

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3.6 Starting the Inverter
Before turn on the inverter, please confirm:
1) Three phase five wires (PE/L1/L2/L3/N) cable correctly connected to the inverter AC side through AC
circuit breaker;
2) The DC cable connected correctly to the inverter DC side through DC circuit breaker, please be
attention to the cable connected to the two string correctly and it’s polarity;
3) The unused terminals are covered.
Starting the inverter:
Step1: Close the DC and AC circuit breaker;
Step2: If the solar panels provide enough energy, the power module will work and the LCD panel will be
lit;
Step3: In case you are starting the inverter for the first time, the inverter needs to be commissioned.
Commissioning is described on page 17,chapter 4.3
Step4: Then the inverter will turn into self-check mode and the LCD panel will display the remaining
time of connect simultaneously;
Step5: After the inverter turn into normal mode, it feed electrical energy into grid, and LCD panel will
display the generated electrical energy.
As long as the inverter works, it will automatically track the maximum power point to absorb the maximum
energy from solar. When night comes, the irradiance is not strong enough to provide energy, the inverter will
power off automatically. When the next day comes, the input voltage reaches the start value, it will start again
automatically.
4. User Interface
4.1 Led and key
Figure 4-1 LED display
No
Object
Description
1
Run
(Green LED)
On = Normal operation
Flashing = Waiting, checking or starting up
2
Fault
(Red LED)
On = Failure,
Flashing = Temporary failure
3
Pushbutton
Pressing < 1 s: Next
Pressing > 2 s: Enter

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4.2 LCD display
Menu structure:
Normal/fault
Power：W
Vpv1：V
Power：W
Ipv2：A
Power：W
Vac A：V
Power：W
Iac A：A
Power：W
Fac：Hz
Power：W
E-today：KwH
Power：W
E-total：KwH
Power：W
SN NO.
Moudle
Firmware
M: ×.×× S:×.××
Country
××××××
Event list
Power：W
Setting
Power：W
Fault code1
Power：W
Language setting
Power：W
Country setting
Power：W
...
Power：W
...
Power：W
User setting Factory setting
Language
Factory setting
Country setting
Factory setting
Module Add
xx
PF setting
Power：W
Clear events
Power：W
Factory setting
Power：W
Clear E-total
Power：W
PF：xxx
Power：W
Setting Add
Pac = W
中文
Factory setting
English
Factory setting
VDE4105
Factory setting
中国2
Factory setting
...
Factory setting
Fault code ...
Power：W
...
Power：W
...
Power：W
Factory setting
Power：W
xx
Pac = W
Auto test
Pac = W ...
Power：W

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4.3 Factory setting
1) Press pushbutton long in order to enter the “Factory setting” menu.
2) Press pushbutton long to enter the “language setting” menu.
3) Press pushbutton less than 1 sec. to the langue menu you want and Press pushbutton long to select.
4) Press pushbutton less than 1 sec. to the country menu you want and Press pushbutton long to select.
4.4 Setting language
1) Press pushbutton less than 1 sec. several times until you reach the “Setting” menu.
2) Press pushbutton long in order to enter the “setting” menu.
3) Press pushbutton less than 1 sec. several times until you reach the “language setting” menu.
4) Press pushbutton less than 1 sec. to the langue menu you want and Press pushbutton long to select.
4.5 Setting modbus address
1) Press pushbutton less than 1 sec. several times until you reach the “Setting” menu.
2) Press pushbutton long in order to enter the “setting” menu.
3) Press pushbutton less than 1 sec. several times until you reach the “module add” menu.
4) Press pushbutton less than 1 sec. to the modbus address number you want and Press pushbutton long
to set.
4.6 Self-Test in accordance with CEI 0-21 (Applies to Italy only)
The self-test is only required for inverters, which are commissioned in Italy. The Italian standard requires that
all inverters feeding into the utility grid are equipped with a self-test function in accordance with CEI 0-21.
During the self-test, the inverter will consecutively check the protection reaction times and values for
overvoltage, under voltage, over frequency and underfrequency.
Self-test function is available at any time. It also allows end user get test reports shown on LCD display.
There are two ways to execute the self-test:
Auto-Test from screen:
1) Press pushbutton less than 1 sec. several times until you reach the “Setting” menu.
2) Press pushbutton long in order to enter the “setting” menu.
3) Press pushbutton less than 1 sec. several times until you reach the “AutoTest-Italy” menu (You need to
set the inverter country to CEI 0-21 before testing).
4) Press pushbutton long to execute the auto-test.

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5) The inverter will automatically run the test until the screen shows “Test end”, if the test passes, it will
show “test ok”, if the test is failed, it will show “test failed”.
Auto-Test from Solar Admin:
1) Download and install “Solar Admin” on laptop.
2) Connect inverter to laptop via RS485 port.
3) When the inverter and “solar admin” are successfully connected. Click “Sys.setting”-“Other”-
“AUTOTEST” enter into “Auto-Test” interface.
4) Click “Execute” to start the test.
5) The inverter will automatically run the test until the screen shows “Test end”.
6) Click "Read" to read the test value, and click "Export" to export the test report.
7) After click “Read” button, interface will show the test results, if the test passes, it will show “PASS”, if
the test is failed, it will show “FAIL”.

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5. Warranty
The standard warranty period for the inverter is 60 months from the date of installation and no more than 66
months (5.5 years) from the date of shipment from factory.
5.1 Warranty claim procedure
Please report defective device with a brief error description and SN code to our service mail or service hotline
for registration.
Alternatively, please contact your specific dealer or installer if your unit is defective or faulty.
To claim the warranty under the warranty terms of factory, you need to supply us with the following
information and documentation regarding the faulty unit:
1) Product Model No ( e.g. R3-10K-DT) and the serial Number (e.g. 8101031190402005).
2) Copy of the invoice and warranty certificate for the inverter.
3) Error message on LCD screen and additional information regarding the fault/error.
4) Detailed information about the entire system (modules, circuits, etc.).
5) Documentation of previous claim/exchanges ( if applicable).
In the case of an exchange, the remainder of the warranty entitlement will be transferred to the replacement
device. In this event, you will not receive a new certificate, as this replacement will be noted by factory.
5.2 Service after warranty expiration
For products which are out of warranty, factory charges an on-site service fee, parts, labor cost and logistic
fee to end-user which can be any/all of:
1) On-site attendance fee: Cost of travel and time for the technician in attending on-site;
2) Parts: Cost of replacement parts (including any shipping/admin fee that may apply);
3) Labor: Labor time fee charged for the technician, who is repairing, maintaining, and installing (hardware
or software) and debugging the faulty product;
4) Logistic fee: Cost of delivery, tariff and other derived expense when defective products are sent from
user to factory or/and repaired products are sent from factory to user;