Solplanet ASW LT-G2-A Series User manual

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 1
ASW LT-G2-A series inverter Table of Contents
1 Notes on this Manual...................................................................... 4
1.1 General Notes ........................................................................................ 4
1.2 Area of Validity ...................................................................................... 4
1.3 Target group .......................................................................................... 5
1.4 Symbols used in this manual............................................................... 5
2 Safety .............................................................................................. 7
2.1 Intended use .......................................................................................... 7
2.2 Important safety information................................................................ 8
2.3 Symbols on the label............................................................................. 9
3 Unpacking..................................................................................... 11
3.1 Scope of delivery................................................................................. 11
3.2 Check for transport damage............................................................... 12
4 Mounting....................................................................................... 13
4.1 Requirements for mounting ............................................................... 13
4.2 Mounting the inverter.......................................................................... 16
5 Electrical connection.................................................................... 19
5.1 Safety.................................................................................................... 19
5.2 Electrical Connection Panel ............................................................... 20
5.3 Electrical connection diagram with a separate DC isolator............ 21
5.4 AC Connection..................................................................................... 21
5.4.1 Conditions for the AC connection.............................................. 21

2 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
5.4.2 Grid connection............................................................................ 24
5.4.3 Additional grounding connection............................................... 26
5.5 DC connection ..................................................................................... 27
5.5.1 Requirements for the DC connetion........................................... 27
5.5.2 Assembling the DC connectors.................................................. 28
5.5.3 Disassembling the DC connectors............................................. 29
5.5.4 Connecting the PV Array............................................................. 31
5.6 Conmunication equipment connection............................................. 33
5.6.1 Mounting the WiFi or 4G Stick.................................................... 33
5.6.2 Connect the RS485 network cable ............................................. 34
5.6.3 Connect the smart meter cable................................................... 36
6 Communication ............................................................................ 37
6.1 System monitoring via WLAN............................................................ 37
6.2 Active power control with Smart meter............................................. 38
6.3 Remote firmware update..................................................................... 39
6.4 Active power control via demand response enabling device (DRED)
..................................................................................................................... 39
6.5 Communication with the third party device...................................... 40
6.6 Earth fault alarm .................................................................................. 40
7 Commissioning............................................................................. 41
7.1 Electrical check ................................................................................... 41
7.2 Mechanical check................................................................................ 42
7.3 Safety code check ............................................................................... 42
7.4 Start-up................................................................................................. 43

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 3
8 Display .......................................................................................... 44
8.1 Overview of the control panel ............................................................ 44
8.2 LED indicators ..................................................................................... 44
9 Disconnecting the inverter from voltage sources...................... 45
10 Technical data............................................................................. 47
10.1 DC input data ..................................................................................... 47
10.2 AC output data................................................................................... 50
10.3 General data....................................................................................... 53
10.4 Safety regulations ............................................................................. 53
10.5 Tools and torque ............................................................................... 55
11 Troubleshooting......................................................................... 57
12 Maintenance................................................................................ 60
12.1 Cleaning the contacts of the DC-switch.......................................... 60
12.2 Cleaning the heat sink ...................................................................... 60
13 Recycling and disposal.............................................................. 61
14 EU Declaration of Conformity.................................................... 61
15 Warranty...................................................................................... 62
16 Contact........................................................................................ 62

4 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
1 Notes on this Manual
1.1 General Notes
ASW LT-G2-A series inverter is a three-phase transformerless string inverter
with two independent MPPTs. It converts the direct current (DC) generated by
the photovoltaic (PV) module into a three-phase alternating current (AC) and
feeds it into the utility grid.
1.2 Area of Validity
This manual describes the mounting, installation, commissioning and
maintenance of the following inverters:
ASW3K-LT-G2-A
ASW4K-LT-G2-A
ASW5K-LT-G2-A
ASW6K-LT-G2-A
ASW8K-LT-G2-A
ASW10K-LT-G2-A
ASW12K-LT-G2-A
ASW15K-LT-G2-A
ASW17K-LT-G2-A
ASW20K-LT-G2-A
Please read this manual carefully before using this product, keep it in a
convenient place and make it available at all times.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 5
1.3 Target group
This document is for qualified electricians only, who must perform the tasks
exactly as described.
All persons installing inverters must be trained and experienced in general
safety which must be observed when working on electrical equipment.
Installation personnel should also be familiar with local requirements, rules
and regulations.
Qualified persons must have the following skills:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing,
repairing and using electrical devices and installations
• Training in the installation and commissioning of electrical devices and
installations
• Knowledge of the applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information.
1.4 Symbols used in this manual
Safety instructions will be highlighted with the following symbols:
DANGER indicates a hazardous situation which, if not be avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not be avoided, can
result in death or serious injury.

6 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
CAUTION indicates a hazardous situation which, if not be avoided, can
result in minor or moderate injury.
NOTICE indicates a situation which, if not be avoided, can result in
property damage.
INFORMATION that is important for a specific topic or goal, but is not
safety-relevant.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 7
2 Safety
2.1 Intended use
1. ASW LT-G2-A series inverter converts the direct current from the PV arrays
into grid-compliant alternating current.
2. ASW LT-G2-A series inverter is suitable for indoor and outdoor use.
3. ASW LT-G2-A series inverter must only be operated with PV arrays (PV
modules and cabling) of protection class II in accordance with IEC 61730,
application class A. Do not connect any sources of energy other than PV
modules to ASW LT-G2-A series inverter.
4. PV modules with a high capacity to ground must only be used if their
coupling capacity does not exceed 5.0μF.
5. When the PV modules are exposed to light, a DC voltage is supplied to this
inverter.
6. When designing the PV power plants, ensure that the values comply with
the permitted operating range of all components at all time.
7. The product must only be used in countries for which it is approved or
released by AISWEI and the grid operator.
8. Use this product only in accordance with the information provided in this
documentation and with the locally applicable standards and directives. Any
other application may cause personal injury or property damage.
9. The type label must remain permanently attached to the product.

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2.2 Important safety information
Danger to life due to electric shock when live components or
cables are touched
• All work on the inverter must only be carried out by qualified
personnel who have read and fully understood all safety
information contained in this manual.
• Do not open the inverter.
• Children must be supervised to ensure that they do not play
with the inverter.
Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous
DC voltage which is present in the DC conductors and the live
components of the inverter. Touching the DC conductors or
the live components can lead to lethal electric shocks. If you
disconnect the DC connectors from the inverter under load,
an electric arc may occur leading to electric shock and burns.
• Do not touch non-insulated cable ends.
• Do not touch the DC conductors.
• Do not touch any live components of the inverter.
• Have the inverter mounted, installed and commissioned only
by qualified persons with the appropriate skills.
•If an error occurs, have it rectified by qualified persons only.
•Prior to performing any work on the inverter, disconnect it
from all voltage sources as described in this document (see
Section 9 "Disconnecting the Inverter from Voltage Sources").

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 9
2.3 Symbols on the label
Symbol
Explanation
Beware of a danger zone
This symbol indicates that the inverter must be additionally
grounded if additional grounding or equipotential bonding is
required at the installation site.
Risk of injury due to electric shock
Touching an ungrounded PV module or array frame can
cause a lethal electric shock.
• connect and ground the PV modules, array frame and
electrically conductive surfaces so that there is continuous
conduction.
Risk of burns due to hot enclosure parts
Some parts of the enclosure can get hot during operation.
• During operation, do not touch any parts other than the
enclosure lid of the inverter.
Damage to the inverter due to electrostatic discharge
Internal components of the inverter can be irreparably
damaged by electrostatic discharge.
• Ground yourself before touching any component.

10 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
Beware of high voltage and operating current
The inverter operates at high voltage and current. Work on the
inverter must only be carried out by skilled and authorized
electricians.
Beware of hot surfaces
The inverter can get hot during operation. Avoid contact during
operation.
WEEE designation
Do not dispose of the inverter together with the household
waste but in accordance with the disposal regulations for
electronic waste applicable at the installation site.
CE marking
The product complies with the requirements of the applicable
EU directives.
Certification mark
The product has been tested by TUV and got the quality
certification mark.
RCM Mark
The product complies with the requirements of the applicable
Australian standards.
Capacitors discharge
Before opening the covers, the inverter must be disconnected
from the grid and PV array. Wait at least 5 minutes to allow the
energy storage capacitors to fully discharge.
Observe the documentation
Observe all documentation supplied with the product

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 11
3 Unpacking
3.1 Scope of delivery
Obje
ct
Description
Quantity
A
Inverter
1 piece
B
Wall bracket
1 piece
C
DC connector
2 pairs(3-10K), 3 pairs(12-
15K), 4 pairs(17-20K)
D
AC connector
1 piece
E
Documentation
1 piece
F
Screw accessory
1 piece
G
4G/ WiFi Stick
1 piece
H
Communication Cover
2 pieces
Please carefully check all the components in the carton. If anything is missing,
contact your dealer at once.

12 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
3.2 Check for transport damage
Thoroughly inspect the packaging upon delivery. If you detect any damage to
the packaging which indicates the inverter may have been damaged, inform
the responsible shipping company immediately. We will be glad to assist you if
required.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 13
4 Mounting
4.1 Requirements for mounting
1. Be sure that the inverter is mounted out of the reach of children.
2. Install the inverter in a high traffic area where the fault is likelyto be seen.
3. Ensure good access to the inverter for installation and possible service.
4. The ambient temperature should be below 40°C to ensure optimal
operation.
5. Observe the minimum clearances to walls, other inverters, or objects as
follows to ensure sufficient heat dissipation.
Clearances for one inverter
Direction
Min. clearance (mm)
above
500
below
500
sides
300
Danger to life due to fire or explosion
Despite careful construction, electrical devices can cause fires.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where flammable materials are
stored.
•Do not mount the inverter in areas where there is a risk of explosion.

14 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
Clearances for multiple inverters
6. In order to avoid power reduction caused by overheating, do not mount
the inverter in a location that allows long-term exposure to direct sunlight.
7. Ensure optimum operation and extend service life, avoid exposing the
inverter to direct sunlight, rain and snow.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 15
8. The mounting method, location and surface must be suitable for the
inverter's weight and dimensions.
9. If mounted in a residential area, we recommend mounting the inverter on
a solid surface. Plasterboard and similar materials are not recommended
due to audible vibrations when in use.
10.Don’t put any objects on the inverter. Do not cover the inverter.
11.Mount the inverter vertically or tilted backward by max.15°.
12.Never install the inverter horizontally, or with a forward tilt or with a
backward tilt or even with upside down. The horizontal installation can
result in damage to the inverter.
13.Mount the inverter at eye level for easy inspection.

16 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
4.2 Mounting the inverter
Mounting procedure:
1.Use the wall bracket as a drilling template and mark the positions of the drill
holes, then drill 3 holes (Φ10) to a depth about 70mm. During operation,
keep the drill vertical to the wall, and hold the drill steady to avoid tilted
holes.
Risk of injury when lifting the inverter, or if it is dropped
The weight of Solplanet inverter is max. 18.6 kg. There is risk of injury if
the inverter is lifted incorrectly or dropped while being transported or when
attaching it to or removing it from the wall bracket.
• Transport and lift the inverter carefully.
Risk of injury due to damaged cables
There may be power cables or other supply lines (e.g. gas or water)
routed in the wall.
• Ensure that no lines are laid in the wall which could be damaged when
drilling holes.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 17
2.After cleaning the dust and other objects from the holes, place 3 wall
anchors into the holes, then attach the wall bracket to the wall using the
hexagon head screw delivered with the inverter.
3.Hold the inverter using the handles at the corners, attach the inverter onto
the wall bracket tilted slightly downwards.
4.Check both sides of the outer fin of the inverter to ensure that it is securely
in place.
Risk of injury due to the product falls down
If the depth and distance of the holes is not correct, the product maybe fall
down from the wall.
•Before inserting the wall anchors, measure the depth and distance of the
holes.

18 User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722
5.Attach the outer fins of heat sink to both sides of the wall bracket using M4
screws. (screw driver type: PH2, torque: 1.6 Nm).
Dismante the inverter in reverse order.

User Manual UM0024_ASW 3K-20K-LT-G2-A_EN_V02_0722 19
5 Electrical connection
5.1 Safety
Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous DC voltage
which is present in the DC conductors and the live components of the
inverter. Touching the DC conductors or the live components can lead to
lethal electric shocks. If you disconnect the DC connectors from the
inverter under load, an electric arc may occur leading to electric shock and
burns.
• Do not touch non-insulated cable ends.
• Do not touch the DC conductors.
• Do not touch any live components of the inverter.
• Have the inverter mounted, installed and commissioned only by qualified
persons with the appropriate skills.
• If an error occurs, have it rectified by qualified persons only.
• Prior to performing any work on the inverter, disconnect it from all
voltage sources as described in chapter 9.
Risk of injury due to electric shock
Touching an ungrounded PV module or array frame can cause a lethal
electric shock.
• connect and ground the PV modules, array frame and electrically
conductive surfaces so that there is continuous conduction.