LeadSolar Energy Microinverter LS600 Original operating instructions

LS600 Installation and Operation Guide –North American Edition 1
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LeadSolar Energy Microinverter LS600
Installation & Operation Guide
North American Edition
Rev 2018-4

LS600 Installation and Operation Guide –North American Edition 2
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Contact Information:
US Customer Service
2109-C South Wright St.
Santa Ana, CA 92705
[phone]
LeadSolar Energy Co, Ltd.
Room 402, Building A1, 228# Linghu Ave,
Wuxi New District, Wuxi, China, 214135
Tel: [phone]
Fax: [phone]
[e-mail]
www.leadsolarenergy.com
Safety Directives and Code Compliance
This chapter contains the safety instructions and conditions of acceptability for the entire system. To maintain
product warranty, these directions must be followed when installing, operating and servicing the unit. If ignored,
physical injury or death may happen, or damage may occur to the unit.
Read these Instructions before working on the unit. If you are unable to understand the Dangers, Warnings,
Cautions or Instructions, contact the manufacturer or authorized service agent before installing, operating and
servicing the unit. The grid connected Inverter meets the requirements stipulated in:
•NEC 2014 Section 690.12 Rapid Shutdown of PV Systems on Buildings
•NEC 2014 Section 705.12 Point of Connection
•NEC 2014 Section 690.11
Other Information
All information, specifications and illustrations in this manual are those in effect at the time of printing. LeadSolar
Energy reserves the right to change specifications or design at any time without notice.
For the latest information about our products, please go to www.leadsolarenergy.com
All trademarks are recognized as the property of their respective owners.
Copyright © 2018 LeadSolar Energy. All rights reserved.

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Contents
Notes.................................................................................................................................... 4
1.1 Validity.................................................................................................................................4
1.2 Symbols used......................................................................................................................4
1.3 Safety Instructions...............................................................................................................4
1.4 Explanation of Symbols .......................................................................................................5
Introduction........................................................................................................................... 5
2.1 LeadSolar Smart Solar: More Flexibility, More Productivity..................................................6
2.2 Reliability.............................................................................................................................6
2.3 System Monitoring & Easy Maintenance..............................................................................7
2.4 Simple Design & Easy Installation........................................................................................7
Installation ............................................................................................................................ 8
3.1 Compatibility & Capacity......................................................................................................8
3.2 Packaging............................................................................................................................9
3.3 Microinverter Identification.................................................................................................10
3.4 Required Parts & Tools......................................................................................................10
3.5 Lightning & Surge Suppression..........................................................................................10
Installation Procedure..........................................................................................................11
4.1 Preparation........................................................................................................................11
4.2 Installation .........................................................................................................................11
Step 1: Measure Grid AC Voltage at Electrical Utility Connection ............................................12
Step 2: Attach Microinverter to PV Racking .............................................................................12
Step 3: Connect Microinverter’s AC Cable...............................................................................13
Step 4: Terminate Unused End of AC Cable for Each Branch .................................................13
Step 5: Ground the System & Microinverter.............................................................................14
Step 6: Complete the Installation Map .....................................................................................14
Step 7: Install the Communication Link....................................................................................14
Step 8: Connect the PC Modules.............................................................................................15
Step 9: Register Microinverter..................................................................................................15
Three Phase Systems.........................................................................................................16
5.1 Three Phase Microinverter System....................................................................................16
5.2 AC Cable Connection ........................................................................................................16
LeadSolar Microinverter System Operation Guide ..............................................................18
Microinverter System Trouble Shooting Guide ....................................................................19
Replacing or Adding a Microinverter....................................................................................20
Technical Data.....................................................................................................................21
6.1 Technical Considerations...................................................................................................21
Appendix..............................................................................................................................22

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Notes
1.1 Validity
This installation manual describes the assembly, installation, commissioning, and maintenance and failure
identification of the following inverters:
LeadSolar LS600
1.2 Symbols used
The following symbols are used in this manual:
WARNING!
This indicates a safety hazard that could cause personal injury or equipment
malfunction. Follow these instructions carefully to avoid or reduce the risk.
NOTE
This indicates important information that is critical to optimizing system
performance.
1.3 Safety Instructions
1. Follow local installation codes. Make sure to adhere to all applicable national and local
electrical codes during installation. Only qualified personnel should install or replace LeadSolar
Microinverters.
2. No DIY repairs. Users must never attempt to repair or modify the LeadSolar Microinverter
themselves. If the microinverter fails to operate, contact LeadSolar customer service for repair or
replacement. Tampering with or opening the hardware will void the warranty.
3. Read the instructions. Read all instructions and cautionary notes before installing or using
LeadSolar hardware.
4. Disconnect safely. Disconnect the AC power grid connection first before disconnecting the PV
module from the LeadSolar Microinverter.
5. Microinverter can get hot. The majority of the LeadSolar Microinverter is a heat sink. Under
normal operating conditions, the temperature is 59°F (15°C), but in can reach 176°F (80°C) under
extreme conditions. To reduce risk of burns, use caution when working with microinverters.
6. It’s already fine-tuned for your region. Be aware that the LS600 have different default factory
settings for the applications in different regions throughout the world. The LS600 do not need field
adjustment or tuning. It will start to deliver power to the electric grid automatically after installation.

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1.4 Explanation of Symbols
The following symbols are shown on the microinverter:
Symbol Explanation
Treatment
To comply with European Directive 2002/96/EC on waste Electrical and
Electronic Equipment and its implementation as national law, electrical
equipment that has reached the end of its life must be collected separately
and returned to an approved recycling facility. Any device no longer
required must be returned to an authorized dealer or approved collection
and recycling facility.
TÜV SÜD certification
The LeadSolar Microinverter meets the product quality standards of TÜV
SÜD.
Caution
Do not come within 8 inches (20cm) of the microinverter for any length of
time while it is in operation.
Danger of high voltages
Danger to life due to high voltage in the microinverter.
Beware of hot surface
The inverter can become hot during operation. Avoid contact with metal
surfaces during operation.
CE mark
The inverter complies with the requirements of the Low Voltage Directive
for the European Union.
Read manual first
Please read the installation manual first before installation, operation and
maintenance.
5 minutes
Caution, risk of electric shock, Energy storage timed discharge
After disconnecting both AC and DC supplies from the panel, wait 5
minutes until handling the microinverter.
Introduction
Welcome to the growing family of high performance LS600 microinverter system owners. The LeadSolar

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Microinverter System is among the most advanced inverter systems for use in utility-interactive photovoltaic
applications. This system is highly reliable, highly efficient, and easy to install. The three key elements of a
LeadSolar Microinverter System include:
• LeadSolar Microinverter
• LeadSolar Link™ or Digi™ Communications Gateway
• LeadSolar LinkView™ web-based monitoring and analysis software
For most of the PV applications, the LeadSolar microinverter system will benefit the system owner from the
initial system design throughout the entire lifetime of the system.
2.1 LeadSolar Smart Solar: More Flexibility, More Productivity
Microinverters are what make a distributed solar system possible. Conventional solar systems string numerous
solar panels together and connect them all to a single, central grid-tied inverter. This works well if all panels are
under uniform conditions, but efficiency is lost when some of the panels are shaded by cloud, trees, or debris.
Particularly for roof-top residential and commercial PV applications, the output power from a central inverter
system is usually not maximized, no matter what advanced PV modules or inverter technologies are used.
Traditional String Inverter LeadSolar Microinverter
Warranty (yrs) 5 - 10 10 - 25
System Risks The whole system Local
Maintenance Professionally trained technician
on site repair Remote support and problem fixing
DC High Voltage Yes No
DC Arc Fire Risk Yes No
Electric Generation Control Cannot turn off in daylight Automatic turn off
System Design High voltage DC wiring Flexible
Accessories DC conduit, junction boxes, etc. AC connection
Installation Additional location required Inverter integrated with solar panel
In the LeadSolar microinverter system, PV modules will not be connected to a central inverter. Instead, each
PV module has its own inverter to feed the harvested energy from PV module to electric grid. The maximum
power point tracking (MPPT) controller embedded in the microinverter will monitor the operation of the PV
module in real time and maintain a maximum power point. If one or several PV modules in the system are
shaded, the output power of these modules will drop but the other modules will not be affected and continue to
output at their maximum power level. LeadSolar’s smart solar power system can typically harvest 15% - 25%
more electric energy than a traditional system with one central inverter.
2.2 Reliability
The LeadSolar microinverter provides highly reliable solar installations by removing failure-prone central
inverters. With no single point of system failure, LeadSolar Microinverters are designed to operate at full power
with ambient temperatures as high as 65°C. The microinverter housing is designed for outdoor installation and
complies with the IP65 environmental enclosure rating standard. LeadSolar Energy uses the harshest
possible testing conditions; each unit is both tested at the factory and tracked in the field.

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2.3 System Monitoring & Easy Maintenance
The LeadSolar Link™ Communications Gateway provides a unique and convenient way to monitor your
system’s operation and performance.
To install a LeadSolar Link Gateway, just plug it into any wall socket in your house and use the provided
Ethernet cable or WiFi option to connect it to your broadband router or modem. Then the Gateway will
automatically start to work and communicate with the microinverters in your system. The collected system
operation data will be reported to the LeadSolar Management web server. The Management software presents
current and historical system performance trends, and it informs you of PV system status.
2.4 Simple Design & Easy Installation
LeadSolar Microinverters have a simple design for easy installation. Traditional design procedures (string
calculations, panel orientation, etc.) are not necessary for LeadSolar microinverter systems. Simply attach the
microinverter to a compatible PV module and connect the DC and AC cables to the panel and AC grid. The
installation is finished and the system is ready to work.
The system is open and can accommodate new panels at any time. This allows users to adopt solar power at
their own pace, and as their budget allows. One panel’s failure does not impede others at all. Maintenance,
repair, and replacement do not require the whole system to be shut down — only the panel that needs repair.
Distributed systems eliminate the risk of personnel exposure to hazardous voltages (up to 1000V), which is
common in a string or central inverter system.

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Installation
Follow the instructions in this section to install LeadSolar LS600 Microinverters.
Only qualified personnel should connect the LeadSolar Microinverter to the utility
grid. Installation includes risk of electric shock. PV modules connected to
LeadSolar Mircroinverters must be grounded before installation.
LeadSolar recommends installing a surge suppressor on all systems to prevent
damage to the microinverters against voltage spikes. LeadSolar is not responsible
for microinverter damage due to voltage spikes if the system is unprotected.
Prior to the site visit, the installer should first set up an installer account by
registering at www.leadsolar.net. Acustomer account is next created which can
then be linked to the installer account
3.1 Compatibility & Capacity
The LS600 model is compatible with both 60-cell and 72-cell PV modules subject to the microinverter input
specification listed on the data sheet. Lead Solar sets the maximum inverter output current at the factory.
Different regions or design limitations may require a different output current. Maximum branch circuit size is
a function of the PV breaker size, and the inverter output current per the table below:
Electrical Compatibility
Model
Number AC Wire Gauge Compatible PV Module Type PV Module Connector Type
LS600-240-P 12 AWG 60-cell or 72-cell PV Module MC-4 Type 2 Locking or Amphenol H4 Locking
LS600-XXX-Z 10 AWG 60-cell or 72-cell PV Module MC-4 Type 2 Locking or Amphenol H4 Locking
Maximum # LS600-240-P Microinverters per 20A AC Branch Circuit
Grid Voltage/Type Maximum # per Branch Circuit
Single Phase 240V, Inv. Output=2.0A 8
Single Phase 240V, Inv. Output=2.5A 6
Single Phase 240V, Inv. Output=2.92A 5

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Maximum # LS600-XXX-Z Microinverters per 30A AC Branch Circuit
Grid Voltage/Type Maximum # per Branch Circuit
Single Phase 208V, Inv. Output=2.88A 8
Single Phase 240V, Inv. Output=2.92A 8
Single Phase 240V, Inv. Output=2.4A 10
Single Phase 240V, Inv. Output=2.0A 12
Single Phase 277V, Inv. Output=2.53A 9
Single Phase 277V, Inv. Output=2.4A 10
Single Phase 277V, Inv. Output=2.0A 12
3.2 Packaging
Included in a LeadSolar Microinverter System package are:
Object description Quantity
1. Microinverter 1
2. Grounding terminal 1 set

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3.3 Microinverter Identification
Note: S/N attached to marking plate identifies the manufacturing location and the batch or production date. Please record the serial
number and ID before installation. LeadSolar recommends making an installation map showing inverter location as laid out on the roof.
Please refer to the LeadSolar Gateway Commissioning Guide for instructions on how to register microinverters for monitoring.
3.4 Required Parts & Tools
The LeadSolar microinverter systems are designed for easy installation. During installation, the following parts
and tools are required:
LeadSolar Parts:
• LeadSolar LS600 Microinverters – one for every two panels
• Jumper cable- one for each active end ofAC branch
(Alternatively a cable can be constructed from a connector and length of three wire TC-ER cable)
• End Caps – one for each end of a branch circuit.
Other Items:
• AC junction boxes
• Gland or strain relief fitting (one per AC junction box)
• Continuous grounding conductor, 5/16” stainless steel star washers, hex nuts and bolts
• Cable clips
• Number 2 and 3 Phillips screwdrivers
• Torque wrench, sockets, wrenches for mounting hardware
• Adjustable wrench or open-ended wrench (for terminators)
• Handheld mirror (to view indicator lights on the undersides of the microinverters)
3.5 Lightning & Surge Suppression
PV systems are usually installed in open fields or on rooftops - places where lighting can strike. Lightning
causes drastic voltage spikes in solar panels, which may damage equipment. While LeadSolar Energy
Microinverters have built-in surge protection, this may not always protect all equipment from the energy spike
caused by lighting. Additional surge protection devices are strongly recommended.
Additional surge protection devices are strongly recommended to fully protect your system.