Solplanet ASW LT-G3 Series User manual

UM0016_ASW 25K-40K-LT-G3_EN_V04_0523 1
ASW LT-G3 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 ..............................................................................................................6
2 Safety.......................................................................................................................................................................................7
2.1 Intended use............................................................................................................................................7
2.2 Important safety information ............................................................................................................8
2.3 Symbols on the label..........................................................................................................................10
3 Unpacking..................................................................................................................................................11
3.1 Scope of delivery .................................................................................................................................11
3.2 Check for transport damage ............................................................................................................11
4 Mounting............................................................................................................................................................................. 11
4.1 Requirements for mounting ............................................................................................................12
4.2 Mounting the inverter.......................................................................................................................16
4.3 Handling the product......................................................................................................................19
5 Electrical connection........................................................................................................................................................ 20
5.1 Safety ......................................................................................................................................................21
5.2 Electrical Connection Panel..............................................................................................................21
5.3 Electrical connection diagram with a separate DC isolator ...................................................22
5.4 AC Connection......................................................................................................................................23
5.4.1 Conditions for the AC connection................................................................................................23
5.4.2 Grid connection...................................................................................................................................26
5.4.3 Additional grounding connection.................................................................................................28

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5.5 DC connection ......................................................................................................................................28
5.5.1 Requirements for the DC connetion........................................................................................... 29
5.5.2 Assembling the DC connectors .....................................................................................................29
5.5.3 Disassembling the DC connectors................................................................................................ 31
5.5.4 Connecting the PV Array..................................................................................................................33
5.6 Conmunication equipment connection........................................................................................35
5.6.1 Connect the communication line with RJ45 socket.............................................................. 35
5.6.2 Mounting the COM3: WiFi/4G ......................................................................................................36
6 Communication................................................................................................................................................................. 38
6.1 System monitoring via WLAN or 4G..............................................................................................38
6.2 Active power control with Smart meter ......................................................................................39
6.3 Remote firmware update .................................................................................................................40
6.4 Active power control via demand response enabling device (DRED).................................40
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...................................................................................................................................................42
8Solplanet app............................................................................................................................................................ 44
8.1 Brief introduction................................................................................................................................44
8.2 Download and install .........................................................................................................................44
8.3 Create an account ...............................................................................................................................45
8.4 Create a plant.......................................................................................................................................47
8.5 Setting parameters .............................................................................................................................53

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8.5.1 Inverter configuration....................................................................................................................53
8.5.2 Grid code settings ........................................................................................................................54
8.5.3 Active power reduction at overfrequency P(f) ...................................................................55
8.5.4 Active power reduction at overvoltage P(U) ..........................................................................58
8.5.5 Cosφ(P) curve configuration.....................................................................................................62
8.5.6 Q(U) curve configuration...........................................................................................................66
9 Decommissioning the product...................................................................................................................................... 70
9.1 Shut down ....................................................................................................................................................................... 70
9.2 Disconnection................................................................................................................................................................. 70
10 Technical data ................................................................................................................................................................. 72
10.1 DC input data......................................................................................................................................72
10.2 AC output data...................................................................................................................................74
10.3 General data.......................................................................................................................................76
10.4 Safety regulations.............................................................................................................................78
10.5 Tools and torque...............................................................................................................................79
11 Troubleshooting.............................................................................................................................................................. 79
12 Maintenance.................................................................................................................................................................... 82
12.1 Cleaning the contacts of the DC-switch .....................................................................................82
12.2 Cleaning air inlet and outlet....................................................................................................83
13 Recycling and disposal .................................................................................................................................................. 84
14 EU Declaration of Conformity..................................................................................................................................... 84
15 Warranty........................................................................................................................................................................... 85
16 Contact .............................................................................................................................................................................. 85

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1 Notes on this Manual
1.1 General Notes
ASW LT-G3 series inverter is a three-phase transformerless string inverter with three to three 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:
ASW40K-LT-G3
ASW36K-LT-G3
ASW33K-LT-G3
ASW30K-LT-G3
ASW27K-LT-G3
ASW25K-LT-G3
Please read this manual carefully before using this product, keep it in a convenient place and make it
available at all times.

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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.

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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.
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.

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2 Safety
2.1 Intended use
1. ASW LT-G3 series inverter converts the direct current from the PV arrays into grid-compliant
alternating current.
2. ASW LT-G3 series inverter is not for residential use.
3. ASW LT-G3 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-G3 series inverter.
The product is not equipped with an integrated transformer and therefore has no galvanic isolation.
The product must not be operated with either grounded DC conductors or PV modules whose
outputs are grounded. This can cause the product to be destroyed. The product may be operated
with PV modules whose frame is grounded.
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 Solplanet 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”).

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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.

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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.
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 25 minutes to allow the energy storage capacitors to fully
discharge.
Observe the documentation
Observe all documentation supplied with the product.

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3 Unpacking
3.1 Scope of delivery
Object
Description
Quantity
A
Inverter
1 piece
B
Wall mounting bracket
1 piece
C
DC connector
2 pieces
D
Screw accessory
1 piece
E
AC connector
1 piece
F
4G/ WiFi Stick (optional)
1 piece（optional）
G
RS485 communication terminal
1 piece（optional）
H
Documentation
1 piece
Please carefully check all the components in the carton. If anything is missing, contact your dealer at once.
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.
4 Mounting

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4.1 Requirements for mounting
1. Be sure that the inverter is mounted out of the reach of children.
2. Mount the inverter in areas where it cannot be touched inadvertently.
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.
Direction
Min. clearance (mm)
above
500
below
500
sides
500
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.

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Clearances for one inverter
Clearances for multiple inverters

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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.
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°.

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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.

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4.2 Mounting the inverter
Mounting procedure:
1. Use a Φ10mm bit to drill 3 holes at a depth of about 70mm according to the location of the wall
mounting bracket
Risk of injury when lifting the inverter, or if it is dropped.
The weight of Solplanet inverter is max. 43 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.

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2. Insert three wall plugs into the wall and fix the mounting bracket to the wall by inserting three
Screws (SW10).
3. Hang the slot on the back of the inverter to the hook on the top of the mounting bracket.
4. Secure the inverter to the mounting bracket on both sides using two M5 screws. Screwdriver
type: PH2, torque: 2.5Nm.
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.

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Dismante the inverter in reverse order.

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4.3 Handling the product
CAUTION
Risk of injury due to the weight of the product!
Injuries may result if the product is lifted incorrectly or dropped while being transported or
mounted.
Transporte e eleve o produto com cuidado. Ter em conta o peso do produto.
Wear suitable personal protective equipment for all work on the product.
1. When carrying heavy objects, you should be prepared to bear the weight to avoid being crushed or
sprained by the heavy objects.
2. When multiple people are carrying heavy objects at the same time, height and other conditions must
be considered, and reasonable personnel matching and division of labor must be done to ensure
balanced weight distribution.
3. When two or more people are carrying heavy objects together, one person should direct them to lift
or put down the equipment at the same time to ensure uniform steps.
4. When handling equipment by hand, you should wear protective gloves, protective shoes and other
safety equipment to avoid injury.
5. When carrying equipment by hand, first approach the object, squat down, and use the power of
straightening your legs instead of your back to lift the object slowly and steadily. It is strictly
forbidden to suddenly lift or twist the trunk.
6. Do not quickly lift heavy objects above waist height. Place the heavy object on a workbench at half
waist height or a suitable place, adjust the position of your palms, and then lift it.