SolarEdge SE9KUS User manual

Installation Guide
Three Phase System with
SetApp Configuration
For North America
Version 1.2

Disclaimers 1
Disclaimers
Important Notice
Copyright © SolarEdge Inc. All rights reserved.
No part of this document may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photographic,
magnetic or otherwise, without the prior written permission of SolarEdge Inc.
The material furnished in this document is believed to be accurate and reliable.
However, SolarEdge assumes no responsibility for the use of this material. SolarEdge
reserves the right to make changes to the material at any time and without notice. You
may refer to the SolarEdge web site (https://www.solaredge.com/us/) for the most updated
version.
All company and brand products and service names are trademarks or registered
trademarks of their respective holders.
Patent marking notice: see https://www.solaredge.com/us/patent
The general terms and conditions of delivery of SolarEdge shall apply.
The content of these documents is continually reviewed and amended, where
necessary. However, discrepancies cannot be excluded. No guarantee is made for the
completeness of these documents.
The images contained in this document are for illustrative purposes only and may vary
depending on product models.
Three Phase System Installation Guide MAN-01-00527-1.2

FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on,
you are encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for
compliance may void the user’s authority to operate the equipment.
-Three Phase System Installation Guide MAN-01-00527-1.2
2 FCC Compliance

Support and Contact Information
If you have technical problems concerning SolarEdge products, please contact us:
Support Center: https://www.solaredge.com/service/support
USA and Canada: 1 510 498 3200
Worldwide: [phone]
Fax: [phone]
Email: [e-mail].
Support Center: https://www.solaredge.com/us/service/support
Before contact, make sure to have the following information at hand:
Model and serial number of the product in question.
The error indicated on the Inverter SetApp mobile application or on the
monitoring platform or by the LEDs, if there is such an indication.
System configuration information, including the type and number of modules
connected and the number and length of strings.
The communication method to the SolarEdge server, if the site is connected.
The inverter software version as appears in the status screen.
Support and Contact Information 3
Three Phase System Installation Guide MAN-01-00527-1.2

Revision History
Version 1.2 (Feb. 2019)
Added appendix 'Determining the Circuit Breaker Size' and paragraph.
referencing to it, in the 'Grid Connection Guidelines' section.
Updated guidelines for use of extension cables in power optimizer installation.
Torque for plastic cover screws 10.3 N*m/ 7.5 lb-ft.
In Specifications removed 'Recommended OCPD size per grid' table.
Version 1.1 (Dec. 2018)
Updated communication options and menus
Version 1.0 (Sept. 2018)
Initial release
-Three Phase System Installation Guide MAN-01-00527-1.2
4 Revision History
Added Proposition 65 warning (for California).

Contents
Disclaimers 1
Important Notice 1
FCC Compliance 2
Support and Contact Information 3
Revision History 4
Contents 5
HANDLING AND SAFETY INSTRUCTIONS 7
Safety Symbols Information 7
IMPORTANTSAFETYINSTRUCTIONS 8
Chapter 1: Introducing the SolarEdge Power Harvesting System 12
Power Optimizer 12
Inverter with Safety Switch 13
Monitoring Platform 13
Supported ACGrids 14
Installation Procedure 14
Installation Equipment List 14
Inverter Transport and Storage 15
Chapter 2: Installing the Power Optimizers 16
Safety 16
Package Contents 18
Installation Guidelines 18
Step 1: Mounting and Grounding the Power Optimizers 22
Step 2: Connecting a PV Module to a Power Optimizer 25
Step 3: Connecting Power Optimizers in Strings 25
Step 4: Verifying Proper Power Optimizer Connection 26
Chapter 3: Installing the Inverter 28
Inverter Package Contents 28
Identifying the Inverter 28
Inverter Interfaces 28
Opening Conduit Drill Guides 34
Mounting the Inverter 35
Chapter 4: Connecting the AC and the Strings to the Safety Switch 41
Grid Connection Guidelines 42
Setting the Inverter to Support 208V 3-wire Grid 43
Connecting the AC Grid to the Safety Switch 44
Connecting the Strings to the Safety Switch 48
Chapter 5: Activating, Commissioning and Configuring the System Using the
Inverter SetApp 51
Contents 5
Three Phase System Installation Guide MAN-01-00527-1.2

Step 1: Activating the Installation 51
Step 2: Commissioning and Configuring the Installation 52
Step 3: Verifying Proper Activation and Commissioning 56
Viewing System Status 57
Reporting and Monitoring Installation Data 63
Chapter 6: Setting Up Communication 66
Communication Options 66
Communication Connectors 68
Removing the Inverter Cover 69
Creating an Ethernet (LAN) Connection 69
Creating an RS485 Bus Connection 73
Verifying the Connection 77
Appendix A: Errors and Troubleshooting 79
Identifying Errors 79
Troubleshooting Communication 81
Power Optimizer Troubleshooting 82
Appendix B: Mechanical Specifications 84
Appendix C: External Fan Maintenance and Replacement 85
Fan Maintenance 85
External Fan Replacement 85
Appendix D: Replacing and Adding System Components 88
Replacing an Inverter 88
Replacing the Safety Switch 89
Adding, Removing, or Replacing Power Optimizers 92
Appendix E: Determining the Circuit Breaker Size 93
Revision History 93
Introduction 93
Using Transformers in Commercial Three Phase Inverter Installations 93
Determining the Size of an Inverter Circuit Breaker 95
Technical Specifications - Three Phase Inverters (North America) 97
Default Trip Limits and Times According to IEEE1547 99
Safety Switch 99
-Three Phase System Installation Guide MAN-01-00527-1.2
6 Contents

HANDLING AND SAFETY INSTRUCTIONS
During installation, testing and inspection, adherence to all the handling and safety
instructions is mandatory. Failure to do so may result in injury or loss of life and
damage to the equipment.
Safety Symbols Information
The following safety symbols are used in this document. Familiarize yourself with the
symbols and their meaning before installing or operating the system.
WARNING!
Denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in injury or loss of life. Do not proceed
beyond a warning note until the indicated conditions are fully understood and
met.
AVERTISSEMENT!
Dénote un risque: il attire l'attention sur une opération qui, si elle n'est pas faite
ou suivi correctement, pourrait causer des blessures ou un danger de mort. Ne
pas dépasser une telle note avant que les conditions requises soient
totallement comprises et accomplies.
CAUTION!
Denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in damage or destruction of the
product. Do not proceed beyond a caution sign until the indicated conditions
are fully understood and met.
ATTENTION!
Dénote un risque: il attire l'attention sur une opération qui, si elle n'est pas faite
ou suivi correctement, pourrait causer un dommage ou destruction de
l'équipement. Ne pas dépasser une telle note avant que les conditions requises
soient totallement comprises et accomplies.
NOTE
Denotes additional information about the current subject.
IMPORTANTSAFETYFEATURE
Denotes information about safety issues.
HANDLING AND SAFETY INSTRUCTIONS 7
Three Phase System Installation Guide MAN-01-00527-1.2

IMPORTANTSAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS
CONSIGNES DE SÉCURITÉ IMPORTANTES
CONSERVEZ CES INSTRUCTIONS
WARNING!
The inverter cover must be opened only after switching the inverter ON/OFF/P
switch located at the bottom of the inverter to OFF. This disables the DC voltage
inside the inverter. Wait five minutes before opening the cover. Otherwise, there
is a risk of electric shock from energy stored in the capacitors.
AVERTISSEMENT!
Ne pas ouvrir le couvercle de l'onduleur avant d'avoir coupé l'interrupteur situé
en dessous de l'onduleur. Cela supprime les tensions CC et CA de l'onduleur.
Attendre cinq minutes avant d’ouvrir le couvercle. Sinon, il y a un risque de
choc électrique provenant de l'énergie stockée dans le condensateur.
WARNING!
Before operating the inverter, ensure that the inverter is grounded properly. This
product must be connected to a grounded, metal, permanent wiring system, or
an equipment-grounding conductor must be run with the circuit conductors
and connected to the equipment grounding terminal or lead on the product.
AVERTISSEMENT!
Avant d'utiliser l'onduleur monophasé, assurez-vous que l'onduleur est
correctement mis à la terre. Ce produit doit être raccordé à un système de
câblage fixe, métallique, l'équipement-le conducteur de mise à la terre doit être
exécuté avec les conducteurs de circuit et raccordé à l'équipement borne de
mise à la terre ou de plomb sur le produit.
WARNING!
Opening the inverter and repairing or testing under power must be performed
only by qualified service personnel familiar with this inverter.
AVERTISSEMENT!
L’unité ne doit être ouverte que par un technicien qualifié dans le cadre de
l'installation et de la maintenance.
-Three Phase System Installation Guide MAN-01-00527-1.2
8 IMPORTANTSAFETYINSTRUCTIONS

WARNING!
The Safety Switch meets all requirements for a code-compliant installation of
this system. The DC Disconnect Switch disconnects both the positive and
negative conductors.
AVERTISSEMENT!
Le sectionneur externe (inclus) repond aux exigences de conformité pour
l’installation de ce système . Le coupeur CC ouvre les conducteurs positifs et
négatifs.
WARNING!
The inverter input and output circuits are isolated from the enclosure. This
system does not include an isolation transformer and should be installed with
an ungrounded PV array in accordance with the requirements of NEC Articles
690.35 and 690.43 National Electric Code, ANSI/NFPA 70, 2011 (and Canadian
Electrical Code, Part I, for installations in Canada).
Equipment grounding is the responsibility of the installer and must be
performed in accordance with all applicable Local and National Codes.
AVERTISSEMENT!
Les circuits d’entrée et de sortie de l’onduleur sont isolés de l’enveloppe. Ce
système n’inclut pas d’isolation galvanique (transformateur) et devra être
installé sans mise à la terre du champ PV et en accord avec les articles 690.35 et
690.43 du National Electric Code (NEC), ANSI/NFPA 70, 2011 (et du Code
Electrique Canadien, Partie 1, pour les installations faites au Canada).
La mise à la terre des équipements est la responsabilité de l’installateur et doit
être faite en accord avec les toutes les règles locales et nationales applicables.
WARNING!
Three phase 9,10, 20 kW inverter must be connected to a dedicated AC branch
circuit with a maximum Overcurrent Protection Device (OCPD) of 40A.
Three phase 14.4, 33.3 kW inverters must be connected only to a dedicated AC
branch circuit with a maximum Overcurrent Protection Device (OCPD) of 60A.
AVERTISSEMENT!
Les onduleurs triphasés 9,10,20 kW doivent être connectés à un branchement
AC dédié avec un disjoncteur de 40A.
L’onduleur triphasés 14.4, 33.3 kW doivent être connectés à un branchement AC
dédié avec un disjoncteur de 60A.
IMPORTANTSAFETYINSTRUCTIONS 9
Three Phase System Installation Guide MAN-01-00527-1.2

ATTENTION!
Cette unité doit être utilisée selon les spécifications de fonctionnement, comme
décrit dans la dernière fiche technique des spécifications.
CAUTION!
HEAVY OBJECT. To avoid muscle strain or back injury, use proper lifting
techniques, and if required - a lifting aid.
ATTENTION!
Objet lourd. Pour éviter la fatigue musculaire ou des blessures au dos, utilisez
des techniques de levage appropriées et, si nécessaire - un auxiliaire de levage
lors du retrait.
NOTE
The inverter is NEMAtype 3R rated . Unused conduit openings and glands
should be sealed with appropriate seals.
NOTE
Use only copper conductors rated for a minimum of 90°C/ 194°F.
For the SE10KUS, SE20KUS, SE33.3KUS three phase inverters where
opposite polarity DC conductors are routed in the same conduit, 1000V
rated cables must be used.
NOTE
This inverter is provided with an IMI (Isolation Monitor Interrupter) for ground
fault protection.
NOTE
The symbol appears at grounding points on the SolarEdge equipment. This
symbol is also used in this manual.
-Three Phase System Installation Guide MAN-01-00527-1.2
10 IMPORTANTSAFETYINSTRUCTIONS
CAUTION!
This unit must be operated according to the technical specification datasheet
provided with the unit.
WARNING!
SolarEdge products can expose you to chemicals including antimony
trioxide, which is known to the State of California to cause cancer. Fo r more
information, go to www.P65Warnings.ca.gov .
AVERTISSEMENT!
Les produits SolarEdge peut vous exposer à des agents chimiques, y compris
trioxyde d'antimoine, identifiés par l'État de Californie comme pouvant
causer le cancer. Pour de plus amples informations, prière de consulter
www.P65Warnings.ca.gov.

IMPORTANT SAFETY INFORMATION
Building or structures with both utility service and a PV system,
complying with NEC 690.12, shall have a permanent plaque or directory
including the following wording:PHOTOVOLTAIC SYSTEM EQUIPPED
WITH RAPID SHUTDOWN. The term “PHOTOVOLTAIC” may be
replaced with “PV.” The plaque or directory shall be reflective, with all
letters capitalized and having a minimum height of 9.5mm (3/8 in.) in
white on red background.
Attention -The system status indicator shall be installed in a location in
close proximity to the system actuator, where the indication of safe
shutdown can be clearly seen.
This rapid shutdown system is required to be provided with an
actuating device or a status indicator which shall be installed in a
location accessible to first responders, or be connected to an
automatic system which initiates rapid shutdown upon the activation
of a system disconnect or activation of another type of emergency
system.
Additionally, in a prominent location near the actuator device the end
use installation shall be provided with a permanent marking including
the following wording:PHOTOVOLTAIC SYSTEM EQUIPPED WITH
RAPID SHUTDOWN. The term “PHOTOVOLTAIC” may be replaced with
“PV”. The plaque or directory shall be reflective, with all letters
capitalized and having a minimum height of 9.5mm (3/8 in.) in white
on red background.
IMPORTANTSAFETYINSTRUCTIONS 11
Three Phase System Installation Guide MAN-01-00527-1.2
NOTE
A SolarEdge inverter may be installed in a site with a generator, however must
not operate at the same time as the generator.
Operating an inverter and a generator simultaneously will void the warranty.
SolarEdge requires installing a physical or electronic interlock, which will
prevent the generator and inverter from operating simultaneously. Interlock
procurement, installation, maintenance and support are the responsibility of
the installer. Damage to the inverter due to incorrect interlock installation or
use of an interlock that is incompatible with the SolarEdge system will render
the SolarEdge warranty invalid.

Chapter 1: Introducing the SolarEdge Power
Harvesting System
The SolarEdge power harvesting solution maximizes the power output from any type of
solar Photovoltaic (PV) installation while reducing the average cost per watt. The
following sections describe each of the system’s components.
Figure 1: The SolarEdge power harvesting system components
Power Optimizer
The power optimizers are DC-DC converters connected to PV modules in order to
maximize power harvesting by performing independent Maximum Power Point
Tracking (MPPT) at the module level.
The power optimizers regulate the string voltage at a constant level, regardless of string
length and environmental conditions.
The power optimizers include a safety voltage function that automatically reduces the
output of each power optimizer to 1 Vdc in the following cases:
During fault conditions
The power optimizers are disconnected from the inverter
The inverter ON/OFF switch is turned OFF
The safety switch on the Safety Switch is turned OFF
The inverter AC breaker is turned OFF
-Three Phase System Installation Guide MAN-01-00527-1.2
12 Chapter 1: Introducing the SolarEdge Power Harvesting System

Chapter 1: Introducing the SolarEdge Power Harvesting System 13
The Rapid Shutdown (PVRSS)is initiated by one of the following methods:
Inverter AC breaker is turned OFF, or AC to the inverter is disconnected
by another method (intentionally or as result of a fault)
Inverter ON/OFF switch is turned OFF
The Safety Switch is turned OFF
For inverters with Manual Rapid Shutdown, initiation is done by
switching the Safety Switch OFF
Each power optimizer also transmits module performance data over the DC power line
to the inverter.
Two types of power optimizers are available:
Module Add-on power optimizer – connected to one or more modules
Smart modules - the power optimizer is embedded into a module
Inverter with Safety Switch
The i nverter efficiently converts DC power from the modules into AC power that can be
fed into the main ACservice of the site and from there to the grid. The inverter also
receives the monitoring data from each power optimizer and transmits it to a central
server (the monitoring platform; requires Internet connection).
The Safety Switch has a manually operated switch for disconnecting the DC power of a
SolarEdge system.
The Safety Switch is located below the inverter and is connected to the inverter with AC
and DC wires.
Monitoring Platform
The monitoring platform enables monitoring the technical and financial performance of
one or more SolarEdge sites. It provides past and present information on the system
performance both at the system and module levels.
Three Phase System Installation Guide MAN-01-00527-1.2

Supported ACGrids
Figure 2: AC grids supported by SolarEdge three phase inverters
NOTE
Grid support depends on the inverter model. Some three phase inverters
support the 208V 3-wire grid. Refer to Setting the Inverter to Support 208V 3-
wire Grid on page 43.
Installation Procedure
The following is the procedure for installing and setting up a new SolarEdge site. Many
of these also apply to modification of an existing site.
1. Connecting Power Optimizers in Strings, page 25.
2. Recording power optimizer serial numbers (optional), page 64.
3. Mounting the inverter, Page 35.
4. Connecting the strings and the AC to the Safety Switch, page 41.
5. Commissioning and activating the installation, page 51.
6. Connecting the inverter to the monitoring platform, page 65.
Installation Equipment List
Standard tools can be used during the installation of the SolarEdge system. The
following is a recommendation of the equipment needed for installation:
Allen screwdriver for 5mm screw type for the inverter cover, Safety Switch cover,
and inverter side screws
Standard flat-head screwdrivers set
-Three Phase System Installation Guide MAN-01-00527-1.2
14 Supported ACGrids

Non-contact voltage detector
Cordless drill (with a torque clutch)or screwdriver and bits suitable for the
surface on which the inverter and optimizers will be installed and for opening
the Safety Switch drill guides. Use of an impact driver is not allowed.
Appropriate mounting hardware (for example: stainless bolts, nuts, and
washers) for attaching:
the mounting brackets to the mounting surface
the power optimizer to the racking (not required for smart modules)
Wire cutters
Wire strippers
Voltmeter
For installing the communication options, you may also need the following:
For Ethernet:
CAT5/6 twisted pair Ethernet cable with RJ45 connector.
If using a CAT5/6 cable spool: RJ45 plug and RJ45 crimper
For RS485:
Four- or six-wire shielded twisted pair cable.
Watchmaker precision screwdriver set
Inverter Transport and Storage
Transport the inverter in its original packaging, facing up and without exposing it to
unnecessary shocks. If the original package is no longer available, use a similar box that
can withstand the weight of the inverter (refer to the inverter weight in the specification
datasheet provided with the unit), has a handle system and can be closed fully.
Store the inverter in a dry place where ambient temperatures are -13°F to 140°F /
-25°C to +60°C.
Chapter 1: Introducing the SolarEdge Power Harvesting System 15
Three Phase System Installation Guide MAN-01-00527-1.2

Chapter 2: Installing the Power Optimizers
Safety
The following notes and warnings apply when installing the power optimizers. Some of
the following may not be applicable to smart modules:
WARNING!
The metallic enclosure of the power optimizer must be grounded in accordance
with the product's listing and local and national codes.
AVERTISSEMENT!
L'enceinte métallique de l’optimiseur de puissance doit être mise à la terre en
accord avec les régulations locales et nationales.
WARNING!
When modifying an existing installation, turn OFF the inverter ON/OFF switch,
the Safety Switch and the AC circuit breaker on the main AC distribution panel.
AVERTISSEMENT!
Avant de faire ces étapes, éteignez l'onduleur monophasé en mettant sur OFF
l'interrupteur ON/OFF situé au bas de l'onduleur.
CAUTION!
Power optimizers are IP68/NEMA6P rated. Choose a mounting location where
optimizers will not be submerged in water.
ATTENTION!
Les optimiseurs de puissances sont compatibles à la norme IP68/NEMA6P.
Choisissez le lieu de montage tel que l’optimiseur ne puisse pas être submergé
par l’eau.
CAUTION!
This unit must be operated according to the operating specifications provided
with the unit.
ATTENTION!
Cette unité doit être opérée suivant les instructions trouvées dans le manuel
fourni avec le produit.
CAUTION!
Cutting the power optimizer input or output cable connector is prohibited and
will void the warranty.
ATTENTION!
Sectionner les cables d’entrées ou de sortie de l’optimiseur est interdit et annule
sa garantie.
-Three Phase System Installation Guide MAN-01-00527-1.2
16 Chapter 2: Installing the Power Optimizers

CAUTION!
All PV modules must be connected to a power optimizer.
ATTENTION!
Tous les modules doivent être connectés à un optimiseur de puissance.
CAUTION!
If you intend to mount the optimizers directly to the module or module frame,
first consult the module manufacturer for guidance regarding the mounting
location and the impact, if any, on module warranty. Drilling holes in the
module frame should be done according to the module manufacturer
instructions.
ATTENTION!
Pour installation à même le module ou la monture du module, consultez
d'abord le fabricant du module sur la position et son impact sur la garantie du
module. Le perçage de trous dans le cadre du module devra se faire suivant les
instructions du fabricant.
CAUTION!
Installing a SolarEdge system without ensuring compatibility of the module
connectors with the optimizer connectors may be unsafe and could cause
functionality problems such as ground faults, resulting in inverter shut down. To
ensure mechanical compatibility of the power optimizers’ connectors with the PV
modules’ connectors to which they are connected:
Use identical connectors from the same manufacturer and of the same
type on both the power optimizers and on the modules; or
Verify that the connectors are compatible in the following way:
The module connector manufacturer should explicitly verify
compatibility with the SolarEdge optimizer connector; and
A third-party test report by one of the listed external labs (TUV,
VDE, Bureau Veritas UL, CSA, InterTek) should be
obtained,verifying the compatibility of the
connectors.
For more information, refer to
https://www.solaredge.com/sites/default/files/optimizer-input-
connector-compatibility.pdf
Chapter 2: Installing the Power Optimizers 17
Three Phase System Installation Guide MAN-01-00527-1.2

ATTENTION!
Les connecteurs du module doivent être mécaniquement compatibles avec les
optimiseurs de puissance. Sinon, le système SolarEdge installé peut être
dangereux ou causer des problèmes fonctionnels, tels que les défauts de terre,
qui peuvent provoquer un arrêt de l’onduleur. Afin d'assurer la compatibilité
mécanique entre les optimiseurs de puissance SolarEdge et les modules auxquels
ils sont connectés:
Utiliser des connecteurs identiques du même fabricant et du même type
aussi bien pour les optimiseurs de puissance que pour les modules.
Vérifiez que les connecteurs sont compatibles de la manière suivante:
Le fabricant du connecteur doit explicitement vérifier la
compatibilité avec le connecteur SolarEdge.
Un rapport de test de tierce partie doit être effectué par l’un des
laboratoires externes indiqués ci-dessous:(TUV, VDE, Bureau
Veritas UL, CSA,Intertek), qui vérifiera la
compatibilité des connecteurs.
Pour plus d’informations, consultez
https://www.solaredge.com/sites/default/files/optimizer-input-
connector-compatibility.pdf
IMPORTANTSAFETYFEATURE
Modules with SolarEdge power optimizers are safe. They carry only a low safety
voltage before the inverter is turned ON. As long as the power optimizers are
not connected to the inverter or the inverter is turned OFF, each power
optimizer will output a safe voltage of 1V.
Package Contents
Power optimizers
Stainless steel grounding lock washers
Installation Guidelines
The minimum and maximum string length guidelines are stated in the power
optimizer datasheets. Refer to the Designer for string length verification. The
Designer is available on the SolarEdge website at
https://www.solaredge.com/us/products/installer-tools/designer#/.
-Three Phase System Installation Guide MAN-01-00527-1.2
18 Package Contents

Frame-mounted power optimizers are mounted directly on the
module frame , regardless of racking system (rail-less or with rails).
For installation of frame-mounted power optimizers, refer to
http://www.solaredge.com/sites/default/files/installing_frame_mounted_
power_optimizers.pdf.
The steps in this chapter refer to module add-on power optimizers. For smart
modules, start from Step 3: Connecting Power Optimizers in Strings on page
25 Step 3: Connecting Power Optimizers in Strings on page 25 Also refer to the
documentation supplied with the smart modules.
The power optimizer can be placed in any orientation.
If connecting more modules than optimizer inputs in parallel, use a branch
cable. Some commercial power optimizer models have a dual input.
Position the power optimizer close enough to its module so that their cables
can be connected.
Make sure to use power optimizers that have the required output conductor
length:
Do not use extension cables between a module and a power optimizer,
between two modules connected to the same optimizer, or between two
optimizers other than in the cases specified below.
You can use extension cables between power optimizers only from row
to row, around obstacles within a row, and from the end of the string to
the inverter, as long as the maximum distance is not exceeded.
Chapter 2: Installing the Power Optimizers 19
Three Phase System Installation Guide MAN-01-00527-1.2