SolarEdge SE K Series User manual

Installation Guide
Three Phase Inverter with
Synergy Technology
P/N: SExxK-xxxxIxxxx
For Europe, APACand South Africa
Version 1.1

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 (www.solaredge.com) 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 http://www.solaredge.com/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.
Disclaimers 1
Three Phase Inverter with Synergy Technology P/N: SExxK-xxxxIxxxx SExxK-xxxxIxxxx

Emission Compliance
This equipment has been tested and found to comply with the limits applied by the
local regulations.
These limits are designed to provide reasonable protection against harmful interference.
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.
CAUTION!
Where EN55011 Class A is deemed applicable, the following requirements apply:
This equipment is not intended for use in residential environments and may
not provide adequate protection to radio reception in such environments.
This equipment should be connected to inverters with a rated power > 20
kVA and is intended to be installed in a large photovoltaic power generating
system by a professional.
This equipment should be physically separated from residential
environments by a distance greater than 30 m, and can be equipped with
additional filtering if necessary.
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2 Emission Compliance

Revision History
Version 1.1 (May. 2021)
Added Synergy Unit connectors drawing
Version 1.0, April 2021: Initial release
Revision History 3
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Contents
Disclaimers 1
Important Notice 1
Emission Compliance 2
Revision History 3
HANDLING AND SAFETY INSTRUCTIONS 6
Safety Symbols Information 6
Chapter 1: Introducing the SolarEdge Power Harvesting System 9
Power Optimizer 9
Three Phase Inverter with Synergy Technology 10
Monitoring Platform 11
Designer 11
Supported ACGrids 11
Installation Tools and Material List 11
Installation Procedure 12
Chapter 2: Installing the Power Optimizers 14
Safety 14
Installation Guidelines 15
Step 1: Mounting the Power Optimizers 18
Step 2: Connecting a PV module to a Power Optimizer 18
Step 3: Connecting Power Optimizers in Strings 19
Step 4: Verifying Proper Power Optimizer Connection 20
Chapter 3: Installing the Synergy Manager and Synergy Units 22
Synergy Manager Package Contents 22
Synergy Unit Package Contents 22
Identifying the Units 22
Front Interface of Synergy Manager 23
Inverter Interconnection Cable Interfaces 27
Synergy Manager External Cable Interface 28
Synergy Unit Interface Connectors 29
Mounting and Connecting the Synergy Manager and Synergy Units 30
Chapter 4: Connecting AC and PV Strings to the Synergy Manager 34
Grid Connection Guidelines 34
Connecting the ACGrid to the Synergy Manager 34
Connecting the PV Strings to the Synergy Manager 36
Connecting Ground and AC to the Synergy Manager 39
Chapter 5: Activating, Commissioning and Configuring the System 45
On-grid Commissioning of the inverter 46
Step 3: Verifying Proper Activation and Commissioning 48
Pre-commissioning (Off-Grid) 48
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4 Revision History

Reporting and Monitoring Installation Data 50
Chapter 6: Setting Up Communication with the Monitoring Platform 53
Communication Options 53
Communication Connectors 54
Creating an Local Area Network (LAN) Connection 57
Creating an RS485 Bus Connection 61
RS485 Bus Configuration 64
Verifying the Connection 64
Signaling Options 65
Appendix A: Errors and Troubleshooting 67
Identifying Errors 67
Power Optimizer Troubleshooting 68
Troubleshooting Communication 70
Appendix B: Adding Optional Components 72
AC Surge Protection Device (SPD) 72
DC Surge Protection Device (SPD) 72
Appendix C: Mechanical Specifications 73
Appendix D: SafeDC™ 74
Revision History 5
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HANDLING AND SAFETY INSTRUCTIONS
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.
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.
NOTE
Denotes additional information about the current subject.
IMPORTANTSAFETYFEATURE
Denotes information about safety issues.
Disposal requirements under the Waste Electrical and Electronic Equipment (WEEE)
regulations:
NOTE
Discard this product according to local regulations or send it back to SolarEdge.
Warning!
To reduce the risk of injury, read all instructions in this document.
WARNING!
Using this equipment in a manner not specified by SolarEdge in this document
may impair the protection provided by this equipment.
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.

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6 HANDLING AND SAFETY INSTRUCTIONS

WARNING!
Before operating the inverter, ensure that the inverter AC power cable and wall
outlet are 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.
WARNING!
Opening the inverter and repairing or testing under power must be performed
only by qualified service personnel familiar with this inverter.
WARNING!
Do not touch the PV panels or any rail system connected when the inverter
switch is ON, unless grounded.
WARNING!
SafeDC complies with IEC60947-3 when installing the system with a worst case
SafeDC voltage (under fault conditions) < 120V.
The worst case voltage is defined as: Voc, max+ (String Length-1)*1V, where:
Voc,max = Maximum Voc (at lowest temperature) of the PV modules in the
string (for a string with multiple modules, use the max value)
String Length = number of Power Optimizers in the string
CAUTION!
This unit must be operated according to the technical specification datasheet
provided with the unit.
CAUTION!
HEAVY OBJECT. To avoid muscle strain or back injury, use proper lifting
techniques, and if required - a lifting aid.
NOTE
Use PV modules rated according to IEC 61730 class A.
NOTE
The symbol appears at grounding points on the SolarEdge equipment. This
symbol is also used in this manual.
HANDLING AND SAFETY INSTRUCTIONS 7
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NOTE
SolarEdge inverters can be installed in sites with an alternative power source
such as a generator. SolarEdge requires installing a physical or electronic
interlock, which will signal to the inverter when the grid has been
disconnected. 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.
For more information on connecting an alternative power source
to SolarEdge inverter, refer to
https://www.solaredge.com/sites/default/files/se-inverter-
support-of-voltage-sources.pdf.
NOTE
The following warning symbols appear on the inverter warning label:
Risk of electric shock
Risk of electric shock from energy stored in the capacitor. Do
not remove cover until 5 minutes after disconnecting all
sources of supply.
Hot surface – To reduce the risk of burns, do not touch.
Caution, risk of danger
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8 Safety Symbols Information

Chapter 1: Introducing the SolarEdge Power
Harvesting System
The SolarEdge power harvesting solution is designed to maximize the power output
from any type of solar Photovoltaic (PV) installation while reducing the average cost
per Watt. Figure 1 shows and the following sections describe the components of the
SolarEdge power harvesting system.

Figure 1: The SolarEdge power harvesting system components
Power Optimizer
The Power Optimizers are DC-DC converters connected to PV modules 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/P switch is turned OFF
Chapter 1: Introducing the SolarEdge Power Harvesting System 9
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The DC Disconnect Switch on the Synergy Manager is turned OFF
The inverter AC breaker is turned 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
Three Phase Inverter with Synergy Technology
The Three Phase Inverter with Synergy Technology (referred to as 'inverter' in this
manual) efficiently converts DC power from the PV 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 the
SolarEdge Monitoring platform (requires a land-line or cellular connection to the
Internet).
The inverter is comprised of one Synergy Manager with DC Disconnect Switch for
disconnecting the DCpower, depending on the inverter's model. The Inverter may
include two or three Synergy Units, depending on the inverter's model.
The Synergy Unit are connected to the Synergy Manager via AC, DC and
communication cables.
Each Synergy Unit operates independently and continues to work in case others
stopped operating.
A chain of up to 31 inverters can be set to operate together via Modbus on RS485 line.
When setting a chain of inverters, the inverter that manages communication interface
to the internet is called Leader and the rest are Followers.
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10 Three Phase Inverter with Synergy Technology

Figure 2: Synergy Manager with three Synergy Units
Monitoring Platform
The monitoring platform enables monitoring the technical and financial performance of
one or more SolarEdge sites. It provides past and online information on the system
performance, both at the system and PV module levels.
Designer
Designer recommends inverter and Power Optimizer selection per site size and enables
report generation. You can create a project in Designer and export the site design with
the string layout to the monitoring platform.
Supported ACGrids
This section details the AC grids supported by SolarEdge inverters (model dependent).
Ground connection is required for all grids, as described in "Connecting Ground and AC
to the Synergy Manager" on page39.
For overview of common AC grids and the compatibility of SolarEdge inverters, refer to
Grids Supported by SolarEdge Inverters.
Installation Tools and Material List
Standard tools can be used during the installation of the SolarEdge system.
The following recommend tools is required for installation:
Chapter 1: Introducing the SolarEdge Power Harvesting System 11
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Allen screwdriver for 5mm screw type for the inverter cover, Synergy Manager cover
and inverter side screws
Allen screwdriver for M5/M6/M8 screw types
Standard flat-head screwdrivers set
Non-contact Voltage detector
Cordless drill (with a torque clutch)or screwdriver and bits suitable for the surface
on which the inverter and Power Optimizers will be installed. Use of an impact driver
is not allowed.
MC4 crimping tool
Ring terminals crimping tool
Wire cutters
Wire strippers
Voltmeter
For installing the communication options, you may also need the following:
For Ethernet:
CAT6 twisted pair Ethernet cable with RJ45 connector
If using a CAT6 cable spool: RJ45 plug and RJ45 crimper
For RS485:
Four- or six-wire shielded twisted pair cable
Watchmaker precision screwdriver set
For secondary grounding:
Ring/lug terminal crimper tool for the Ground wire
Ring/lug terminal
Serrated washer
Grounding screw
Two washers
Installation Procedure
The following procedures, are required for installing and setting up a new SolarEdge
site. Some of these procedures also apply to modification of an existing site.
1. Installing the Power Optimizers
2. Installing the Synergy Manager and Synergy Units
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12 Installation Procedure

3. Connecting AC and PV Strings to the Synergy Manager
4. Activating, Commissioning and Configuring the System
5. Setting Up Communication with the Monitoring Platform
Chapter 1: Introducing the SolarEdge Power Harvesting System 13
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Chapter 2: Installing the Power Optimizers
Safety
The following notes and warnings apply when installing the SolarEdge Power
Optimizers. Some of the following may not be applicable to smart modules:
WARNING!
When modifying an existing installation, turn OFF the inverter ON/OFF switch,
the Synergy Manager and the AC circuit breaker on the main AC distribution
panel.
CAUTION!
Power Optimizers are IP68/NEMA6P rated. Choose a mounting location where
optimizers will not be submerged in water.
CAUTION!
This unit must be operated according to the operating specifications provided
with the unit.
CAUTION!
Cutting the Power Optimizer input or output cable connector is prohibited and
will void the warranty.
CAUTION!
All PV modules must be connected to a Power Optimizer.
CAUTION!
If you intend to mount the Power 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.
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.
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14 Chapter 2: Installing the Power Optimizers

CAUTION!
Installing a SolarEdge system without ensuring compatibility of the module
connectors with the Power 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 SolarEdge 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 Power 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.
Installation Guidelines
For the minimum and maximum number of Power Optimizers in a string (string
length), see 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/products/installer-tools/designer#/.
Do not use extension cables between a module and a Power Optimizer, between
two modules connected to the same Power Optimizer, or between two Power
Optimizers other than in the following cases:
Between a Power Optimizer and a module:
Residential Power Optimizers P300-P601 - extension cables up to 0.90 m can be
installed per Power Optimizer (0.90 m for DC+ and 0.90 m for DC -).
Power Optimizers with the 4-type suffix in their part number (Pxxx-4xxxxxx) -
extension cables of up to 16 m can be installed per Power Optimizer (8 m for
DC+ and 8 m for DC-).
Power Optimizers manufactured starting from working week 42, 2019, as
indicated in the serial number (Example:S/N SJ5019A-xxxxxxxx - working week
50, 2019) - extension cables of up to 16 m can be installed per Power Optimizer
(8 m for DC+ and 8 m for DC-).
Chapter 2: Installing the Power Optimizers 15
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Between two Power Optimizers or between a Power Optimizer and the inverter:
Extension cables can be installed between Power Optimizers only from row to
row, around obstacles or pathways within a row and from the end of the string
to the inverter. The total length of the extension cables must not exceed the
following values:
Single Phase Inverters Three Phase Inverters
All - 300 m SE17K and below - 300 m /1000 ft
SE20K and above - 700 m / 2300 ft
For connecting homerun DCcables from Power Optimizers to the inverter, use
cables with the following cross-sections:
For MC4 connectors: 2.5-10 mm²
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 Power Optimizer can be placed in any orientation.
If connecting more modules than Power 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 and input
conductor length.
Completely shaded modules may cause their Power Optimizers to temporarily shut
down. This will not affect the performance of the other Power Optimizers in the
string, as long as the minimum number of unshaded Power Optimizers connected in
a string of modules is met. If under typical conditions fewer than the minimum
Power Optimizers are connected to unshaded modules, add more Power Optimizers
to the string.
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16 Installation Guidelines

To allow for heat dissipation, maintain clearance as specified below.
All Power Optimizers, except for the P860 and P960 Power Optimizers
P860, P960 and M1600 Power Optimizers
Figure 3: Power Optimizers clearance
When installing PV modules in a confined space such as Building-integrated
photovoltaic (BIPV) modules, ventilation measures may be required to ensure that
the Power Optimizers are not exceeding the maximum temperatures stated in their
specifications.
Chapter 2: Installing the Power Optimizers 17
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Step 1: Mounting the Power Optimizers
For each of the Power Optimizers(1):
1. Determine the Power Optimizer mounting location and use the Power
Optimizer mounting brackets to attach the Power Optimizer to the
support structure . It is recommended to mount the Power Optimizer
in a location protected from direct sunlight. For frame-mounted
Power Optimizers follow the instructions supplied with the optimizers,
or refer to https://www.solaredge.com/sites/default/files/installing_frame_
mounted_power_optimizers.pdf.
2. If required, mark the mounting hole locations and drill holes.
CAUTION!
Drilling vibrations may damage the Power Optimizer and will void the
warranty. Use a torque wrench or an electric drill with adjustable clutch that
meets the mounting torque requirements. Do not use impact drivers for
mounting the Power Optimizer.
Do not drill through the Power Optimizer or through the mounting holes.
3. Attach each Power Optimizer to the rack using M6 stainless steel bolts, nuts and
washers or other mounting hardware. Apply torque of 9-10 N*m.
4. Verify that each Power Optimizer is securely attached to the module support
structure.
5. Record Power Optimizer serial numbers and locations, as described in Reporting and
Monitoring Installation Data on page 50.
Step 2: Connecting a PV module to a Power Optimizer
NOTE
Improper wiring may cause electrical faults in a PV system. To avoid electrical
faults, verify proper locking of connectors and avoid cable tension and
friction. Proper planning, materials and installation reduce the risk of electric
arcs, short-circuits and ground faults in the PV system.
NOTE
Images are for illustration purposes only. Refer to the label on the product to
identify the plus and minus input and output connectors.
For each of the Power Optimizers:
(1)Not applicable to smart modules.
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18 Step 1: Mounting the Power Optimizers

Connect the Plus (+) output connector of the module to the Plus (+) input
connector of the Power Optimizer.
Connect the Minus (-) output connector of the module to the Minus (-) input
connector of the Power Optimizer.
Figure 4: Power Optimizer connectors
Step 3: Connecting Power Optimizers in Strings
You can construct parallel strings of unequal length, that is, the number of Power
Optimizers in each string does not have to be the same. The minimum and maximum
string lengths are specified in the power datasheets. Refer to the SolarEdge Site
Designer for string length verification.
NOTE
The DC bus of each unit is separate and not shared for all units. Therefore, in
addition to following the inverter design rules, each unit should follow the
unit design rules as detailed in the Technical Specifications.
1. Connect the Minus (-) output connector of the string’s first Power Optimizer to the
Plus (+) output connector of the string’s second Power Optimizer.
2. To minimize electromagnetic interference (EMI), make sure to minimize the distance
between the positive and negative DC cables.
For detailed instructions, see:
https://www.solaredge.com/sites/default/files/se-emi-
performance-application-note.pdf.
3. Connect the rest of the Power Optimizers in the string in the same manner.
Chapter 2: Installing the Power Optimizers 19
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