Autarco LH Series User manual

Installation and Operation Manual
Hybrid Solar Inverters LH series
© Autarco Group B.V. IM-S2-LH.1-EN-V2.1

Contact Information
Autarco Group B.V.
Torenallee 20
5617 BC Eindhoven
The Netherlands
www.autarco.com
[e-mail]
Other Information
This manual is an integral part of the unit. Please read the manual carefully before installation, operation or
maintenance. Keep this manual for future reference.
Product information is subject to change without notice. All trademarks are recognized as the property of their
respective owners.
© Autarco Group B.V.
All rights reserved.
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Installation and operation manual
Table of Contents
1 Introduction 5
1.1 Read this first 5
1.2 Target Audience 5
1.3 Product versions covered by this document 6
2 Preparation 7
2.1 Safety instructions 7
2.2 Package contents 9
2.3 Internal DC switch 10
2.4 Explanations of symbols on inverter 10
3 Product information 11
3.1 Overview 11
3.2 Product identification 11
3.3 Product overview 11
4 Installation 14
4.1 Safety 14
4.2 Appropriate Mounting Location 14
4.3 Mounting instructions 15
4.4 Safety clearance 16
4.5 Mounting procedure 17
5 Electrical installation 18
5.1 Grounding 18
5.2 AC connection 20
5.3 Meter installation 23
5.4 Communication cable assembly 27
5.5 DC connections 27
5.6 Battery Terminal Components 28
5.7 Status LED indicators 29
5.8 Inverter monitoring 30
5.9 Inverter commissioning sequence 30
6 Operation 32
6.1 LED indicator lights 32
6.2 Inverter display 32
6.3 Information 33
6.4 Settings 38
6.5 Advanced info 39
6.6 Advanced Settings 40
6.7 Temperature derating 44
7 Maintenance 44
8 Disposal 44
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9 Troubleshooting 45
9.1 General 45
10 Product specifications 48
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Installation and operation manual
1 Introduction
1.1 Read this first
This manual contains important information for use during installation and maintenance of the series Autarco
inverter.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of the series Autarco
inverters, the following safety symbols appear throughout this document to indicate dangerous conditions and
important safety instructions.
WARNING! Indicates safety instruction, which if not correctly followed, can result in injury or
property damages.
RISK OF ELECTRIC SHOCK! Indicates safety instructions, which if not correctly followed, could
result in electric shock.
HOT SURFACE! Indicates safety instructions, which if not correctly followed, could result in burns.
1.2 Target Audience
This manual is intended for anyone who is using Autarco LH series inverters. Before any further
action, the operators must first read all safety regulations and be aware of the potential danger to
operate high-voltage devices. Operators must also have a complete understanding of this device’s
features and functions.
ATTENTION! Qualified personnel means a person with valid license from the local authority in:
●Installing electrical equipment and PV power systems (up to 1000 V).
●Applying all applicable installation codes and using Personal Protective Equipment.
●Analyzing and reducing the hazards involved in performing electrical work.
WARNING! Do not use this product unless it has been successfully installed by qualified personnel in
accordance with the instructions in chapter 4 “Installation”.
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1.3 Product versions covered by this document
The main purpose of this user manual is to provide instructions and detailed procedures for installing, operating,
maintaining, and troubleshooting the series of Autarco inverters which includes the following models:
●S2.LH5000
●S2.LH6000
●S2.LH8000
●S2.LH10000
The ‘S2’ in the product code indicates that this product belongs to our product group of inverters, hybrid
inverters, retrofit battery chargers and monitoring devices.
The item code or SKU will include an additional number at the end. The final number references the default grid
standard and colour of inverter. For example, S2.LH5000.1 is the 5kW model with Dutch grid standard as default
and Autarco blue cover.
Please keep this user manual available at all times in case of emergency.
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Installation and operation manual
2 Preparation
2.1 Safety instructions
DANGER! Do not touch any internal components whilst the inverter is in operation.
DANGER! Do not stand close to the inverter during severe weather conditions such as lighting, etc.
Make sure you completely cover the surface of all PV arrays with opaque (dark) material before
wiring them or make sure the DC circuit breaker or equivalent DC isolator is disconnected.
This is because photovoltaic (PV) arrays create electrical energy when exposed to light, and could
cause a hazardous condition.
The series inverter must only be operated with PV arrays of protection class II, in accordance with
IEC 61730, class A.
WARNING! The PV inverter will become hot during operation; please don’t touch the heat sink or
peripheral surface during or shortly after operation.
NOTICE! Do not directly connect AC output of the inverter to any private AC equipment. The PV
inverter is designed to feed AC power directly into the public utility power grid.
WARNING! The installation, service, recycling and disposal of the inverters must be performed by
qualified personnel in compliance with national and local standards and regulations.
Please contact your dealer to get the information of authorized repair facility for any maintenance
or repairmen.
Any unauthorized actions including modification of product functionality of any form will affect the validation of
warranty service; Autarco may deny the obligation of warranty service accordingly.
M-S2-LH.1-EN-V2.1 7

WARNING! The RHI series does not support parallel (three- and single-phase) operation on the
AC-BACKUP port. Parallel operation of the unit will void the warranty.
WARNING! Please refer to the specification of the battery before configuration.
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2.2 Package contents
M-S2-LH.1-EN-V2.1 9

2.3 Internal DC switch
Please verify whether your Autarco LH series inverter is equipped with internal DC switches. This switch can be
found on the bottom of the inverter. If there isn’t an internal DC switch it is important to apply an external DC
disconnector in order to completely disconnect the solar PV module strings from the inverter.
2.4 Explanations of symbols on inverter
10min
DANGER - HIGH ELECTRIC VOLTAGE
This device is directly connected to the public grid. All work to the inverter
shall be carried out by qualified personnel only. There might be residual
currents in inverter for up to 10 minutes because of large capacitors.
ATTENTION
This device is directly connected to electricity DC generators and the public
AC grid.
DANGER – HOT SURFACES
The components inside the inverter will get hot during operation, DO NOT
touch aluminum housing during operating.
ATTENTION
In case of any work to the inverter, always refer to this manual for detailed
product information.
ATTENTION
This device SHALL NOT be disposed of in residential waste. Please go to
Chapter 9 “Recycling and Disposal” for proper treatments.
CE MARK
This equipment conforms to the basic requirements of the EU guideline
governing low voltage and electromagnetic compatibility.
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Installation and operation manual
3 Product information
3.1 Overview
Autarco LH series hybrid nverters are state of the art, high efficiency, robust and reliable grid tied inverters at the
best price quality ratio available. They are easy to install and carry a standard 5 year product warranty which is
extendable to 15 years. Our rigorous quality control and testing facilities guarantee Autarco inverters meet the
highest quality standards possible. These inverters are the key to our international track record of delivering
extremely reliable solar power solutions.
Key features:
●Maximum efficiency of 98.4%
●Wide MPPT voltage range
●Low turn off voltage
●High enclosure protection class IP65
●Intelligent redundant fan-cooling
●Standard 5 year product warranty, extendable to 15
years
●Multiple monitoring options
●Integrated DC switch
For full specifications: please see chapter 9 “Product specifications”.
3.2 Product identification
You can identify the inverter by the serial number (S/N) sticker on the side of the inverter. Important electrical
specifications can also be found on the label which can be found on the right side of the inverter housing. Do not
remove the label or the serial number as this voids the product warranty.
3.3 Product overview
M-S2-LH.1-EN-V2.1 11

Front view
Bottom view
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Installation and operation manual
M-S2-LH.1-EN-V2.1 13

4 Installation
4.1 Safety
DANGER! Do not install the inverter near flammable or explosive items.
WARNING! The installation must be performed by qualified personnel and in compliance with
national and local standards and regulations.
This inverter will be connected to a high voltage DC power generator and AC grid. Inappropriate
installation may also jeopardize the life span of the inverter.
The installation site must have good ventilation conditions. Direct exposure to intense sunshine is
not recommended. Energy production may be lower than expected.
4.2 Appropriate Mounting Location
The heat sink can reach a temperature of 75⁰C under operation.
●Make sure the mounting wall is strong enough to hold the weight of the inverter.
●The ambient temperature of the installation site should be between -20 ⁰Cand +60 ⁰C.
●Make sure of ample ventilation at installation site, insufficient ventilation may reduce the performance
of the electronic components inside the inverter and shorten the lifespan of the inverter.
●The inverter has fans that will intelligently cool the inverter if the internal components exceed 100⁰C.
The fan noise should not exceed 60dB.
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4.3 Mounting instructions
Two people are required to remove the inverter from the carton and install the inverter.
Handles are formed into the heatsink for ease of handling the inverter.
●The inverter is suitable for outdoor and indoor installation.
●Vertical installation is recommended, with a maximum inclination of 5⁰ backwards.
Max. 5⁰
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4.4 Safety clearance
CAUTION! Make sure heat sinks are out of reach of children.
WARNING! When installing multiple inverters, make sure there is sufficient clearance between
them. High temperatures may affect performance. Make sure inverter controls are reachable in
case of emergency.
Observe the following minimum clearances to walls and other inverters. Front clearance shall be 1000 mm.
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Installation and operation manual
4.5 Mounting procedure
Step 1 — Mount the wall bracket onto the mounting wall with appropriate screws plugs
Step 2 — Lower the inverter onto the bracket
Step 3 — Use screws in the package to fix the bottom of the inverter to the mounting bracket
M-S2-LH.1-EN-V2.1 17

5 Electrical installation
DANGER! This inverter will be connected to a high voltage DC power generator and AC grid. The
installation must be performed by qualified personnel and in compliance with national and local
standards and regulations
5.1 Grounding
DANGER! Never connect or disconnect the connectors under load.
NOTICE! The AC connection to the electrical distribution grid must be performed only after
receiving authorization from the utility that operates the grid.
NOTICE! Make sure to set the correct grid standard as part of system commissioning, see chapter
6.6.
There are two options for ground protection: through grid terminal connection and external heat sink
connection.
If AC terminal is used to connect ground, please refer to the contents of 5.3.2.
If the heat sink is used to connect the ground, please follow the steps below.
1) Prepare the grounding cable: recommended to use the 16-35mm² outdoor copper-core cable.
2) Prepare OT terminals M4
WARNING! No matter what kind of grounding connection is adopted, it is strictly forbidden to
connect the ground of the inverter with the lightning protection of a building, otherwise Autarco
will not be responsible for any damage caused by lightning.
3) Strip the grounding cable insulation to the suitable length as shown in Figure 5.7.
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Installation and operation manual
IMPORTANT! B (insulation stripping length) is 2-3mm longer than A (OT cable terminal crimping
area)
4) Insert the stripped wire into the OT terminal crimping area, and use an hydraulic clamp-tool to crimp the
terminal to the wire (as shown in Figure 5.8).
IMPORTANT! After crimping the terminal to the wire, inspect the connection to ensure the
terminal is solidly crimped to the wire.
5) Remove the screw from the heat sink ground point
6) Use the screw of the ground point to attach the grounding cable (as shown as in Figure 5.9). Tighten the
screw securely. Torque is 2 Nm.
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IMPORTANT! In order to improve the corrosion resistance of the grounding terminal, we
recommend that the external grounding terminal is coated with silica gel or paint for protection
after installation of the grounding cable.
5.2 AC connection
DANGER! Never connect or disconnect the connectors under load.
NOTICE! The AC connection to the electrical distribution grid must be performed only after
receiving authorization from the utility that operates the grid.
There are two AC terminals on this inverter and the assembly steps for both are the same. Take out the AC
connector parts from the packaging.
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