LeadSolar LS1400 User manual

LeadSolar LS1400 User Manual 1
User Manual/ Operation Guide
LeadSolar LS1400
Single-Phase Grid-connected PV Microinverter
Ver 2.2
LeadSolar Energy(wuxi) Co, Ltd.
A308, 530 Building, Qing Yuan Rd, Wuxi New District, Wuxi, China, 214135
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.leadsolarenergy.com
Copyright © 2015 LeadSolar Energy. All rights reserved.

LeadSolar LS1400 User Manual 2
Contents
Notes...............................................................................................................................................................3
Safety Instructions......................................................................................................................................3
Explanation of Symbols ..............................................................................................................................4
LeadSolar LS1400 System Introduction ..........................................................................................................6
Installation......................................................................................................................................................9
Compatibility & Capacity ............................................................................................................................9
Packaging....................................................................................................................................................9
Required Parts & Tools .............................................................................................................................10
Lightning Surge Suppression.....................................................................................................................10
Installation Procedure ..................................................................................................................................11
Preparation...............................................................................................................................................11
Installation................................................................................................................................................11
Step 1: Measure Grid AC Voltage at Electrical Utility Connection .......................................................12
Step 2: Attach microinverters 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: Install AC branch circuit junction box.......................................................................................14
Step 6: Ground system & microinverters .............................................................................................15
Step 7: Complete the installation map .................................................................................................15
Step 8: Install the Link nearby the AC main..........................................................................................15
Step 9: Connect microinverters to PV modules....................................................................................16
Step 10: Register microinverters ..........................................................................................................16
LeadSolar Microinverter System Operation Guide.......................................................................................17
Microinverter System Trouble Shooting Guide............................................................................................18
Replacing or Adding a Microinverter............................................................................................................19
Rapid shutdown............................................................................................................................................20
Technical Data ..............................................................................................................................................21
Technical Considerations..........................................................................................................................21
Specifications............................................................................................................................................21

LeadSolar LS1400 User Manual 3
Notes
This user manual describes the assembly, installation, commissioning, and maintenance and failure
identification of the LeadSolar microinverter. To reduce the risk of electrical shock and ensure the
safe installation and operation, the following symbols are used in the manual to indicate dangerous
conditions.
SAVE THESE INSTRUCTIONS-This manual contains important instructions for model LS1400
that shall be followed during installation and maintenance of the microinverter.
All information, specifications and illustrations in this manual are those in effect at the time of
printing. LeadSolar reserves the right to change specifications or design without notice. For latest
information about our products, please visit www.leadsolarenergy.com .
All trademarks are recognized as the property of their respective owners.
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.
Safety Instructions
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.
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.
Read the instructions. Read all instructions and cautionary notes before installing or using
LeadSolar hardware.
Disconnect safely. Disconnect the AC power grid connection first before disconnecting the
PV module from the LeadSolar Microinverter.
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 it can reach 176°F
(80°C) under extreme conditions. To reduce risk of burns, use caution when working with

LeadSolar LS1400 User Manual 4
microinverters.
It’s already fine-tuned for your region. Be aware that the LS1400 has different default
factory settings for the applications in different regions throughout the world. The LS1400 do
not need field adjustment or tuning. It will start to deliver power to the electric grid
automatically after installation.
This unit or system is provided with fixed trip limits and shall not be aggregated above
30 kW on a single Point of Common Connection.
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.
Traitement
Conformément àla directive européenne 2002/96/EC relative aux déchets
d’équipements électriques et électroniques, et à sa transposition dans la
législation nationale, les appareils électriques qui ont atteint la fin de leur
durée de vie doivent être collectés séparément et être soumis à un
recyclage respectueux de l’environnement. Tout appareil usagé doit être
retournéàun revendeur autoriséou àune organisation approuvée de
collecte ou de recyclage.
UL1741
CSA C22.2 NO. 107.1-01
UL 1741 Standard for Safety for Inverters, Converters, Controllers and
Interconnection System Equipment for use with Distributed Energy
Resources. CSA-C22.2 No. 107.1-01 - General Use Power Supplies
UL 1741 Norme de sécurité pour les onduleurs, convertisseurs,
contrôleurs et de l'équipement d'interconnexion de systèmes pour une
utilisation avec des ressources énergétiques décentralisées. CSA C22.2
NO.107.1-01 - Fournitures générales d'utilisation de puissance
Do not come within 8 inches (20cm) of the microinverter for any length
of time while it is in operation.
Ne pas entrer dans un rayon minimum de 8 pouces (20 cm) du micro-
onduleur pour toute longueur de temps lors de l’opération.
CAUTION！
Risk of Electric Shock, Do Not Remove Cover. No User Serviceable Parts
Inside. Refer Servicing To Qualified Service Personnel. Both ac and dc
voltage sources are terminated inside this equipment. Each circuit must be

LeadSolar LS1400 User Manual 5
individually disconnected before servicing. When the photovoltaic array
is exposed to light, it supplies a dc voltage to this equipment.
Attention!
Risque de choc électrique, ne pas enlever le couvercle. Aucune pièce
interne réparable par l’utilisateur. Toute réparation doit être uniquement
confiée à du personnel qualifié. A l’intérieur de l’onduleur on retrouve 2
tensions AC et DC. Chaque circuit doit être déconnectéindividuellement
avant chaque entretien. Lorsque le panneau photovoltaïque est exposéàla
lumière, il fournit une tension DC àcet appareil.
CAUTION！
Hot surfaces –To reduce the risk of burns –Do not touch
Attention!
Les surfaces chaudes –pour réduire le risque de brûlure –Ne pas toucher
Read manual first
Please read the installation manual first before installation, operation and
maintenance.
Lire d’abord le manuel
Veuillez lire le manuel d’installation avant toute installation, opération et
maintenance.
5 minutes
CAUTION！
Do not remove cover until 5 minutes after disconnecting all sources of
supply.
Attention!
Ne pas enlever le couvercle durant 5 minutes après la déconnexion
électrique totale.

LeadSolar LS1400 User Manual 6
LeadSolar LS1400 System Introduction
Welcome to the growing family of high performance LS1400 microinverter system owners. The
LeadSolar 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™ Communications Gateway
•LeadSolar Management™ 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 to the entire lifetime of the system.
LeadSolar Smart Solar: More Flexibility, More Productivity
Microinverters are what make a distributed solar system possible. Conventional solar grids 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 chimneys. Particularly for roof-top residential and commercial PV
applications, the output power from a central inverter architecture is usually not maximized, no
matter how advanced PV modules or inverter technologies are used.
Traditional String Inverter
LeadSolar Microinverter

LeadSolar LS1400 User Manual 7
Warranty (yrs)
5
15 - 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
Separate inverter installation
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.
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 60°C. The microinverter housing is
designed for outdoor installation and complies with the NEMA 6 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.
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 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.

LeadSolar LS1400 User Manual 8
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 modules and connect the DC andAC 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 lethal
doses of voltage (up to 600V), which is common in a string or central inverter system.

LeadSolar LS1400 User Manual 9
Installation
Follow the instructions in this section to install LeadSolar LS1400 Microinverters.
Only qualified personnel should connect the LeadSolar Microinverter to the
utility grid. Installation includes risk of electric shock. PV modules connected
to LeadSolar Microinverters must be grounded before installation.
Compatibility & Capacity
The LS1400 model is compatible with both 60-cell and 72-cell PV modules. For more information,
see Technical Data. The LS1400 should only be connected to the grid type listed below:
Electrical Compatibility
Part Number
AC Grid
Compatible PV Module Type
PV Module Connector Type
LS1400-208-Z
208V
60-cell or 72-cell PV Module
MC-4 compatible
LS1400-240-Z
240V
60-cell or 72-cell PV Module
MC-4 compatible
LS1400-277-Z
277V
60-cell or 72-cell PV Module
MC-4 compatible
Maximum # Microinverters per 32 ampAC Branch Circuit
Grid Voltage
MaximumAllowed LS1400 inverters
208V
3
240V
4
277V
4
Packaging
Included in a LeadSolar Microinverter System package are:
Object description
Quantity
1. Microinverter
1
2. Grounding terminal
1 set
3. User Manual/Operation Guide
1
4. Warranty terms and conditions
1

LeadSolar LS1400 User Manual 10
Required Parts & Tools
During installation, the following parts and tools may be required in addition to the hardware
provided:
LeadSolar Parts:
•LeadSolar Quick Connect Cables
The LeadSolar quick connect cable is designed to facilitate the system installation. Order the
correct cable type according to the grid voltage type.
•Cable clips, sealing caps, as needed (for any unused drops on the cable)
•Terminators, as needed (one needed at the end of each AC branch circuit)
Other Items
•AC junction boxes
•Gland or strain relief fitting (one perAC junction box)
•Continuous grounding conductor, grounding washers
•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)
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 suggested.
Additional surge protection devices are strongly recommended to fully protect
your system.