iENERGY i-Micro GT260 User manual

2
Copy Right @ i-Energy Corp 2013
i-Energy i-Micro inverter GT260
This installation guide contains important instructions on safety matters and the
installation of the i-Energy i-Micro inverter GT260. Please read this guide carefully and
follow all instructions to ensure safe installation and operation.
Read all warnings, instructions and maintenance on the GT260 Installation procedures
listed in this manual.
Before your read:
251660288
Symbols to Be Used in Equipment Marking
Item
Symbol
Reference
Description
1
ISO 3864 –5036
Caution, risk of electric shock
2
IEC 60417 –5041
(2002-10)
Caution, hot surface
3
Caution, unable to take apart
Contact information:
i-Energy Corporation Ltd.
7F.-, No.128, Sec. 3, Minsheng E. Rd.,
Taipei City 105, Taiwan (R.O.C.)
Web:i-Energy.com.tw
TEL: [phone]
FAX: [phone]
This symbol indicates warning, risk of electric shock
Presents safety information to prevent injury or hazards to users and/or installers.
Note
This symbol indicates important information for system operation, please
read the content carefully where this symbol is shown..

3
Copy Right @ i-Energy Corp 2013
Table of Content
Subject....................................................................................................................................................................1
General Introduction for the i-Energy GT260 i-Micro inverter system.............................4
Specifications sheet & parameters .........................................................................................................4
GT260 Installation Procedures ....................................................................................................................6
Things to Check before Installing GT260..........................................................................................6
Step 1- Affix the i-Micro inverters Serial Number to the” i-Energy System
Mapping Guide” found in i-Manager Box ..........................................................................................7
Step 2- Attach i-Energy i-Micro inverters to The Rack ..............................................................7
Step 3- Connecting to The Ground System....................................................................................8
Step 4- Connecting The i-Micro inverters AC Cable to The PV Module
System.............................................................................................................................................10
Step 5- Connecting the DC Cables to the PV Modules ........................................................11
Step 6- Using the AC Grid Extension cable to connect i-Micro inverter to the AC
Breaker...........................................................................................................................................11
For General Connection Configuration........................................................................11
For US Market………………………………………………………..12
For German Market …………………………………………………13
Step 7- Tune on the AC breaker after all the installation steps have been
completed....................................................................................................................................15
i-Micro inverter Replacement....................................................................................................................16
Step 1- Disconnect DC Cables............................................................................................................16
Step 2- Disconnect AC Cable ..............................................................................................................16
Step 3- Loose lay-in Lug on i-Micro inverter ................................................................................17
Step 4- Loosen the Mounting Screws to Take the i-Micro inverter
from Its Rack...................................................................................................................................................17
Accessory...........................................................................................................................................................17
Monthly Maintenance & LED Identification through Installation Steps ...................................18
APPENDIX I & II.............................................................................................................................................19

4
Copy Right @ i-Energy Corp 2013
General Introduction for the i-Energy GT260 i-Micro inverter System
i-Energy GT260 is designed with high transform efficiency, DC(PV panel) to AC(Grid)
i-Micro inverter. Each i-Micro inverter is individually paired with a PV panel, which
ensures each PV panel has its own MPPT, and can individually export AC power to grid
utility. A recommended PV module should have 240W to 265W power output, to
ensure that GT260 i-Micro inverter can work with the best MPPT efficiency.
GT260 i-Micro inverter is a certificated, fully outdoor design with IP 65 protection level,
it is recommended to mount the inverter near your PV panel with its rack. Aside from
this manual, see www.i-energyinc.com/downloads for further support.
The complete i-Energy i-Micro inverter system should be with i-Manager, a web based
PLC communication data login to monitor your i-Micro inverter system.
Specifications Sheets and Parameters for GT260:
PV Input (DC)
General Efficiency
Input power
240W to 265W
Maximum efficiency
94 %
Peak power tracking
range@230W
30-50V
CEC efficiency
93 %
MPPT operating range
25-50V
Nominal MPP
tracking
99.3 %
Solar panel input voltage
range
25V~59V
Maximum DC short
circuit current
12A
Maximum input current
10A

5
Copy Right @ i-Energy Corp 2013
Grid output (AC)
Mechanical Data
Maximum output power
230W
Dimensions (L x W x
H)
23.2cm x 21.1cm
x 4.26cm
Nominal output current
1 A
Cooling
Natural
convection
Nominal voltage (USA)
240V
Enclosure
environmental rating
Outdoor, IP66,
Type 3R
Nominal voltage (EU)
230V
Nominal frequency (USA)
60Hz
Connector
Depended on the
connector from
Junction box.
Nominal frequency (EU)
50Hz
Power factor
> 0.95
Maximum units per branch
17
Weight
2.2 kg ( 4.8lbs)
Key parameters for GT260
Overvoltage Category
II (for PV input), III (for AC output)
Pollution Degree
3
Operation Temperature
-40ºC - +65ºC
Storage Temperature
-40ºC - +85ºC
Relative Humidity
4% - 100%
Maximum Altitude
2000m
Feedback current
0.5mA
Maximum short-circuit current
12A
To reduce the risk of fire, connect only to a circuit whether complied
with maximum branch-circuit overcurrent protection in accordance
with the National Electrical Code, ANSIINFPA 70.
Please read the specification for power input/output limit before
installation. No beyond or out of limitation is allowed.
i-Micro inverter Installation Manual
This specification defines the GT260 for 240W to 265W solar panels. The i-Micro
inverter is designed to be plugged between the solar panel and the power grid, and
converts DC power into AC power.

6
Copy Right @ i-Energy Corp 2013
The i-Micro inverter is used to quickly and easily connect the PV module to transfer
source energy from the DC to AC circuit, then connect to the electrical utility grid or to
energize the AC circuit.
GT 260 Installation Procedures
Things to check before installing GT260:
Please have your technician or installers to review the following items listed below
before beginning the installation.
Item
Check items
1
Read through the i-Micro inverter input/output specifications and warning
items.
2
Type of roof material qualified to install PV systems
3
Broadband connection is established/connected
4
Available Ethernet socket
5
Sufficient grid utility point
Anyone who installs or replaces the i-Micro inverter must be an
authorized and licensed personnel, who can ensure the safety
practice of a qualified assembly, installation or replacement.
Do not disassemble the inverter’s casing to prevent risks of electric
shock and fire.
Select a suitable PV panel with a short circuit current less than 12
Amp.
For i-Micro inverter installation to the rack and PV module, follow the key steps below:
Step 1- affix the i-Micro inverters serial number to the ” i-Energy System Mapping
Guide” found in the i-Manager box.

7
Copy Right @ i-Energy Corp 2013
Step 2- Attach the i-Micro inverter to the rack before connecting it to the PV module.
Step 3- Connect the AC cables to each branch of the PV module system.
Step 4- Connect the grounding system.
Step 5- Connect the DC cables to each PV module.
Step 6- Use the cable accessory to connect between the AC cables of i-Micro inverter
and the AC source.
Step 7- When all of the installation steps have been completed, it is now safe
to turn on the AC source to begin operation.
Step1-- Affix the i-Micro inverters Serial Number to the” i-Energy System Mapping
Guide” Found in the i-Manager Box.
Take i-Micro inverter out of its box, and turn it over to find its serial number.
a. Remove serial number sticker located directly below GT260 i-Micro inverter label.
b. Affix serial Number sticker to the “i-Energy System Mapping Guide”
Fig. 1. Turn over i-Micro inverter to see serial number
System Mapping Guide
Please go to www.i-energyinc.com to download the “i-Energy System Mapping Guide” if
you don’t have an i-Manager, or if an additional “i-Energy System Mapping Guide”is
needed.
Step 2 --Attach i-Energy i-Micro inverters to the Rack
a. Take i-Micro inverter out of the box, mount i-Micro inverter onto the rack.
Install mounting hardware.

8
Copy Right @ i-Energy Corp 2013
b. Use a M8 or M10mm size screw to fix the inverter.
c. The gap distance between the roof surface and the back of the PV modules needs to
be at least 1cm.
Fig. 2.1 Mounting GT260 on racking.
Fig. 2.2 The necessary gap for the i-Micro inverter’s back side.
Recommended racking specifications can be found at www.i-energyinc.com, by
downloading the “System racking guide”.
Step 3- Connecting to the Grounding System.
a. Use a recommended grounding lug with a continuous ground wire, see Fig. 3.1.
b. Grounding washers ( i.e. Wiley Electronics “ WEEB”). Suggested torque
requirement is 18.5 N-m Minimum.
1cm

9
Copy Right @ i-Energy Corp 2013
Fig. 3.1 Grounding lay-in lug.
Fig. 3.2 Grounding washer.
Grounding regulations may vary by market, be sure to follow local
grounding requirements.
- Mounting Hardware
- Mounting Washer
- Grounding Hardware
- Grounding Wire
- DC Connection Cable
- AC Connection Cable
- Racking
Note

10
Copy Right @ i-Energy Corp 2013
Inverters must be grounded according to related local standard.
The lay-in lug from ILSCO (P/N: GBL-4DBT) or other certified
products of equivalent or better quality can also be used.
Step 4- Connecting the i-Micro inverters AC Cable to the PV Module System.
a. Connect adjacent i-Micro inverters to each other through AC interconnection
cables.
b. Listen for a click as connectors engage.
Make sure any unused i-Micro inverter AC connector is covered with a sealing end
cap. Do not exceed 17 pcs of i-Micro inverters connected per branch.
Key Connecting Procedure for the AC grid cable
Connecting Procedure
Fig. 4.1 AC cable connection.
Fig. 4.2 Connect the Male & Female AC connectors between each inverter, and the end
cap on the last inverter at the end of the string.
Note
Note

11
Copy Right @ i-Energy Corp 2013
Step 5- Connecting the DC Cables of PV Modules
a. Connect each PV module to the inverter DC cables to feed PV power into i-Micro
inverter, following the polarity direction marked on each i-Micro inverter.
Fig. 5.1 Connect the DC connector to the i-Micro inverter
Follow all the cable connection sequences outlined in this guide.
Step 6- Using the AC Grid Extension Cable to Connect the i-Micro inverter to the AC
Breaker.
For General connection configuration:
For US, Canada and Mexico:
Use the AC grid extension cable to connect the i-Micro inverter with the AC
breaker inside AC junction box, see Fig 6.1.
To connect i-Micro inverter with AC breaker, the length of the cable will be 5
meters. The color definition of each terminal is shown below
in Table 6.1
Note

12
Copy Right @ i-Energy Corp 2013
Fig. 6.1 General configuration of i-Micro inverter to grid utility.
Table 6.1 Color definition
Pin Number
FUNCTION (US)
WIRE COLOR
PIN 1
LINE 1
Black
PIN 2
LINE 2
White
PIN 3
NEUTRAL
Green
Follow the local electrical codes and Nation electrical codes for
electrical installation.
For German market:
AC grid connection configuration with branch breaker or Safety Box:
a. To connect i-Micro inverter with AC breaker (Fig 6.2(a)), the length of the cable
will be 5 meters. The color definition of each terminal is shown below in Table
6.3.
Connect the i-Micro inverter to the output terminal of branch breaker or
i-Energy’s Safety Box, by using the cable accessory, as shown in Fig
6.2(a) ,Fig 6.2(b) or Fig 6.3.
b. For i-Micro inverter AC cables to connect AC breaker (Fig 6.2(a)), the length of

13
Copy Right @ i-Energy Corp 2013
the cable will be 5 meters. The pin definition of each terminal is shown in Table
6.3.
c. The branch breaker must include protection devices. See Fig 6.2(b) and table 6.2.
d. The function setting of protection devices is defined as shown in Table 6.2. and
the circuit of branch breaker is shown in Fig. 6.2(a), Fig. 6.2(b) and Fig. 6.3.
Fig. 6.2(a) connection configuration with branch breaker

14
Copy Right @ i-Energy Corp 2013
Fig. 6.2(b) The Diagram of Branch Breaker
Table 6.2 Protection Devices
Table 6.3 Cable Color and Pin definition
Pin Number
FUNCTION (EU)
WIRE COLOR
PIN 1
LINE
Black
PIN 2
NEUTRAL
Blue
PIN 3
GROUND
Green / Yellow
Symbol
Name
Specifications
Settings
NFB
No Fuse Breaker
(AC Breaker)
2P 30AF 20AT
NC
MC
Magnetic Contactor
AC240V
3kW/4HP/28A
NC
U/OVP
Voltage Protection
Klemsan VP35
184V UVP, 264V OVP,
0.1 sec
U/OFP
Frequency Protection
Klemsan FP35
47.5Hz UFP, 50.2Hz
OFP, 0.1 sec

15
Copy Right @ i-Energy Corp 2013
Follow the local electrical codes and Nation electrical codes for
electrical installation.
The device between Utility and PV inverter may consist of breaker,
fuse and connectors. To comply with local safety standards and
codes, the connection system should be designed and implemented
by a qualified technician.
Fig. 6.3 Wiring Scheme for safety box
Step7- Turn on the AC Breaker after all the Installation Steps Have Been
Completed
a. Finally check the steps 1 to 5 to ensure system installation is complete then turn on
the AC breaker to start your i-Micro inverter PV system.
Check the electrical utility grid and make sure that the utility
company possesses the relevant licenses before the PV
system begins operation .
This unit is designed to feed energy to the public power grid
(utility) only. Do not connect this unit to an AC source or
generator.
i-Micro inverter Replacement

16
Copy Right @ i-Energy Corp 2013
If an i-Micro inverter in your system isn’t working properly, please follow the steps below
to replace the defective i-Micro inverter.
Step 1- Disconnect the DC Cables
Disconnect the PV panel DC connectors, according to manufacturer’s recommendation
then pull off the DC connector from the inverter.
Crimp pliers may be used to help disconnect the DC connector.
Step 2- Disconnect the AC Cables
Using a small screw driver, slightly press the tenon (a grey connection hook) on the AC
connector, then pull apart to disconnect the AC connector.
Note

17
Copy Right @ i-Energy Corp 2013
Step 3- Loose Lay-in Lug on the i-Micro inverter
Step 4- Loose the Mounting Screws to Take Off the
i-Micro inverter from Its Rack
Accessory
Listed below are the supplied accessories for installation. Customers can contact i-Energy
distributors to purchase the parts.
Item
Name
Description
Length
1
Extension Cable
Bridging a gap between i-Micro
inverters.
5m
2
AC Grid Cable
For AC breaker
5m, 10m
3
End Cap
For dustproof
None
Monthly Maintenance
First turn power off the whole system before performing any maintenance listed in the
table below.

18
Copy Right @ i-Energy Corp 2013
Item
Item
Description
1
Wall-mounting screw
Check for loose screws.
2
AC terminal housing
Check the cables are securely fastened
onto the housing
3
All Cables
Check for cracks on each cable
4
All cable gland
Check for loose ends.
5
i-Micro inverter
Safe cleaning
It is necessary for technician to recommend periodic inspection and
testing while performing wiring inspection at regular intervals.
LED Identification by Installation Steps:
LED state
i-Micro inverter condition
Step 1
OFF
No power feed in to inverter.
Step 2
OFF
No power feed in to inverter.
Step 3
OFF
No power feed in to inverter.
Step 4
OFF
No power feed in to inverter.
Step 5
BLINKING ORANG
PV power feed in but the grid is turned off.
Step 6
BLINKING ORANG
PV power feed in but the grid is turned off.
Step 7
BLINKING GREEN ./
SOLID GREEN
Wait for grid connection, then activate the
inverter to power feed the grid.
If the system is BLINKING RED LED at STEP 5, STEP 6, STEP 7 for over
10 seconds, please contact i-Energy technical support for more
information.
For VDE V0126 grid connection requirements, safety box will indicate multi
status. Please refer to LED indication table in the safety box installation
manual.
APPENDIX I -Wire assembly diagram
General assembly in Europe : the wire assembly configuration for 17 i-Micro inverters in
1 branch.
APPENDIX II-Overall assembly diagram
General assembly in Europe : overall system configuration with 72 i-Micro inverters,
which is 6 (six) branches for 1 system.
Note
Note

19
Copy Right @ i-Energy Corp 2013
APPENDIX I

20
Copy Right @ i-Energy Corp 2013
APPENDIX II