SolarEdge SE330K User manual

Installation Guide
SE330K Inverter
P/N: SE330K-xxxxxxxxx
for North America
Version 1.0

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 website (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.
This manual describes the installation of the SE330K Inverter Installation Guide. Read
this manual before you attempt to install the product, and follow the instructions
throughout the installation process. If you are uncertain about any of the requirements,
recommendations, or safety procedures described in this manual, contact SolarEdge
Support immediately for advice and clarification. The information included in this
manual is accurate at the time of publication. However, the product specifications are
subject to change without prior notice. In addition, the illustrations in this manual are
meant to help explain system configuration concepts and installation instructions. The
illustrated items may differ from the actual items at the installation location.
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules.
Disclaimers1
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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:
Increase the separation between the equipment and the receiver.
Reorient or relocate the receiving antenna.
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.
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2 FCC Compliance

Revision History
Version 1.1(Jan. 2024)
Updated maintenance chapter.
Version 1.0 - Initial release
Revision History3
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Contents
Disclaimers 1
Important Notice 1
FCC Compliance 1
Revision History 3
HANDLING AND SAFETY INSTRUCTIONS 6
Safety Symbols Information 6
IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES 7
Chapter 1: System Overview 12
The SE330K Inverter 12
Combiner Box 13
The H1300 Power Optimizer 13
Designer 14
Monitoring Platform 14
SetApp 15
Installation Tools and Material List 15
Chapter 2: Inverter Overview 16
Inverter Features 16
Chapter 3: Installing the Power Optimizers 23
General Description 23
Safety 24
Package Contents 28
Installation Guidelines 28
Mounting and Grounding the Power Optimizers 29
Connecting a PV module to a Power Optimizer 34
Connecting Power Optimizers in PV Strings 35
String Tests 38
Chapter 4: Installing the Inverter 40
Mounting the Inverter 40
Drilling Conduit Holes 50
Connecting PV Strings and Arrays 51
Connecting AC to the Inverter 52
Connecting Communication 58
Chapter 5: Activating, Commissioning and Configuring the System 66
Verifying Proper Activation and Commissioning 70
Central Commissioning 71
Reporting and Monitoring Installation Data 72
Appendix A: Errors and Troubleshooting 74
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4 Revision History

Identifying Errors 74
Power Optimizer Troubleshooting 75
Troubleshooting Communication 77
Isolation Fault 78
Appendix B: Maintenance 79
Routine Maintenance of the System 79
Monitoring the Solar System Performance 83
Appendix C: Interconnection Standards 84
Performance Categories and Interconnection Standards 84
Enter Service Settings 84
Grid Support Functions 85
Appendix D: Immunity Standards 87
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.

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.
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6 HANDLING AND SAFETY INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS /
CONSIGNES DE SÉCURITÉ IMPORTANTES
SAVETHESEINSTRUCTIONS / CONSERVEZ CES INSTRUCTIONS
WARNING!
To reduce the risk of injury, read all instructions in this document.
 AVERTISSEMENT!
 Pour réduire le risque de blessure, lisez toutes les instructions de ce document.
WARNING!
When servicing or replacing SolarEdge equipment, instructions in the
SolarEdge Inverter Installation Guide must be followed to maintain the integrity
of the PV hazard control system. SolarEdge Power Optimizers and/or inverters
may only be replaced with SolarEdge Power Optimizers and/or inverters. Third
party equipment is not compatible with SolarEdge equipment.
 AVERTISSEMENT!

Lors de l'entretien ou du remplacement de l'équipement SolarEdge, les
instructions du guide d'installation de l'onduleur SolarEdge doivent être suivies
pour maintenir l'intégrité du système de contrôle des risques photovoltaïques.
Les optimiseurs de puissance SolarEdge et/ou les onduleurs ne peuvent être
remplacés que par des optimiseurs de puissance SolarEdge et/ou des
onduleurs. Les équipements tiers ne sont pas compatibles avec les
équipements SolarEdge.
WARNING!
Using this equipment in a manner not specified by SolarEdge in this document
may impair the protection provided by this equipment.
 AVERTISSEMENT!

L'utilisation de cet équipement d'une manière non spécifiée par SolarEdge dans
ce document peut nuire à la protection fournie par cet équipement.
WARNING!
The inverter cover should be opened only after shutting off the inverter, by
moving the ON/OFF/P switch to the OFF(0) position. 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.
IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES7
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
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.
WARNING!
High DC Voltage on PV strings at night when Potential Induced Degradation
(PID) rectifier / Volt-Ampere Reactive (VAR) control function is active. DO NOT
touch any component or perform any maintenance operation on the PV strings.
 AVERTISSEMENT!

Tension CC élevée sur les chaînes photovoltaïques la nuit lorsque le redresseur
à dégradation induite potentielle (PID) / la fonction de contrôle Volt-Ampère
Réactif (VAR) est active. NE touchez AUCUN composant et n'effectuez aucune
opération de maintenance sur les chaînes photovoltaïques.

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8 IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES

WARNING!
The Safety Unit 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!
SE330K SolarEdge inverter for the 690VAC L-L is rated above 1250VDC. As such
installers are required to mark " DANGER — HIGH VOLTAGE" adjacent to each
DC wiring compartment.
NOTE
Utility interconnection may require approval from the authority having
jurisdiction.
Approval from the authority having jurisdiction is required for making
adjustments to utility interactive setpoints.
NOTE
SolarEdge inverters always opens a disconnecting means when the inverter
ceases to deliver power because of abnormal Voltage or frequency conditions
or in response to a detected unintentional island.
IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES9
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NOTE
The current unbalance shall be defined as the maximum deviation of line
current on any phase, from the average line current of all phases, expressed as a
percentage.
The measured maximum inverter current unbalance is as specified in the below
table:
Model % Current unbalance
phase A
% Current unbalance
phase B
% Current unbalance
phase C
SE330K 2.0082 0.0171 1.9908
WARNING!
SolarEdge products can expose you to chemicals including antimony trioxide,
which is known to the State of California to cause cancer. For 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.
CAUTION!
This unit must be operated according to the technical specification datasheet
provided with the unit.
 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
This inverter is provided with an IMI (Isolation Monitor Interrupter) for ground
fault protection.
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10 IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES

NOTE
The state of the ungrounded PV array may temporarily change during
Isolation tests (resistor is connected between DC+ and DC- and GND points)
and PID rectifier operation (small resistance is connected between DC- and
GND points).
NOTE
The inverter is rated for:
• Overvoltage category: IV
• Pollution degree: 2
NOTE
The symbol appears at grounding points on the SolarEdge equipment. This
symbol is also used in this manual.
All SolarEdge inverters incorporate a certified, built-in Ground Fault Current Interrupter
(GFCI). The GFCI protects against electrocution in case of a malfunction in the PV array,
DC cables, or DC section of the inverter. The GFCI in the SolarEdge inverter can detect
current leakage on the DC side. There are two trip thresholds for the GFCI. The lower
threshold is used to protect against rapid changes in current leakage - typically due to
direct contact by people. The higher threshold detects slowly rising leakage currents in
the grounding conductors and limits the currents to ensure fire safety.
IMPORTANT SAFETY INSTRUCTIONS / CONSIGNES DE SÉCURITÉ
IMPORTANTES11
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Chapter 1: System Overview
SolarEdge Large Scale PV Plants Solution is a part of SolarEdge grid services solution,
that enables cloud-based, real-time aggregative control, management, and reporting of
distributed energy resources, for the creation of solar power plants.
Virtual power plants are interconnected and decentralized energy networks that offer
improved grid reliability, services, stability, and costs. They can help utilities, energy
retailers, and large fleet solar owners to meet energy supply shortages and maintain
grid stability.
This 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 shows SolarEdge Large Scale PV Plants
Solution.
Figure 1: The SolarEdge Large Scale PV Plants Solution
The SE330K Inverter
The SE330K Inverter (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
landline connection to the Internet).
Chapter 1: System Overview12
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A chain of up to 13 inverters can be set to communicate together over CAN bus and
connect to a single transformer.
Each inverter operates independently and continues to work in case others stopped
operating.
When setting a chain of inverters, the inverter that manages communication interface
to the internet is called Leader and the rest are Followers.
Figure 2: SE330K Inverter
Combiner Box
NOTE
The combiner box is not part of SolarEdge offering and should be purchased
separately.
A combiner box is an enclosure that aggregates the DC output of multiple solar panels
and combines them into a single DC circuit. It contains fuses, disconnect switches, and
wiring to combine the outputs of two PV arrays into a single larger output, routed to
the inverter.
The H1300 Power Optimizer
The SolarEdge H1300 Power Optimizer is a device that connects to two PV modules and
optimizes and maximizes power harvesting performance by performing module-level
maximum power point tracking (MPPT). The Power Optimizers regulate the PV string
Voltage at a constant level, regardless of PV string length and environmental
conditions. It also provides module-level monitoring and safety features such as
automatic voltage shutdown. The H1300 Power Optimizer is designed only for
SolarEdge inverters and is used for commercial and large field installations.
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13 Combiner Box

Figure 3: The H1300 Power Optimizer
The Power Optimizers include a safety Voltage mechanism 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
The inverter AC breaker is turned OFF
Each power optimizer also transmits module performance data over the DC power line
to the inverter.
Designer
SolarEdge Designer is a powerful tool and a user-friendly web application that simplifies
solar energy system design. It offers an intuitive interface and advanced optimization
features to help professionals create efficient PV designs. With accurate simulation
algorithms and integration with SolarEdge products, it maximizes system performance.
The application also enables financial analysis and supports collaboration.
Monitoring Platform
SolarEdge Monitoring Platform is a user-friendly solution for monitoring and managing
solar energy systems. The platform presents real-time monitoring, historical data
analysis, alerting capabilities, and remote troubleshooting features.
The platform empowers users to optimize energy production, detect and resolve issues
efficiently, and make data-driven decisions to enhance the performance and efficiency
of their solar installations.
For more information on the Monitoring Platform, refer to the C&I One User Guide,
available at https://utility.solaredge.com/hub/ci_one_user_guide.pdf
Chapter 1: System Overview14
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SetApp
SolarEdge SetApp is a mobile application developed and designed to simplify the
process of commissioning and configuring SolarEdge inverters and power optimizers
by providing an intuitive and efficient interface for installers.
With SetApp, installers can easily access and configure SolarEdge inverters and power
optimizers through their smartphone or tablet. The user-friendly app guides installers
step-by-step through the entire commissioning process, ensuring that each component
is properly connected and configured for optimal performance. This eliminates the
need for complex manual setup procedures and significantly reduces the time and
effort required for system installation.
Installation Tools and Material List
Standard tools can be used during the installation of the SolarEdge system.
The following recommended tools are required for installation:
Allen screwdriver for 5mm screw type for the inverter cover, inverter cover 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 are installed and for opening the
inverter AC and DC conduit holes. The use of an impact driver is not allowed
Ratchet torque & extension for 25.8 lb*ft / 35 N*m, 13.3 lb*ft /18 N*m
A/F 19 mm ,A/F 17 mm
Torque screwdriver with extension for Allen bits 3.5 lb*ft / 4.7 N*m, 2.9 lb*ft / 3.9
N*m, 1.8 lb*ft / 2.4 N*m, 0.9 lb*ft / 1.2 N*m
Ring terminals crimping tool
Wire cutters
Wire strippers
Multimeter
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15 SetApp

Chapter 2: Inverter Overview
Inverter Features
Figure 4: SE330K Inverter Features
DC Disconnect Switch
The DC Disconnect Switch is a manually operated safety switch for disconnecting the
DC power of the SolarEdge system. The switch is used to disconnect the solar array
from the inverter in case of fire or lower the chance of damage to the inverter caused by
weather.
Chapter 2: Inverter Overview16
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WARNING! 
When the inverter is OFF (for example during maintenance)
it must be locked to prevent a safety hazard:
Pull the white tab out away from the blue handle and insert
a padlock through one of the holes.

AVERTISSEMENT! 
Lorsque l'onduleur est éteint (par exemple pendant la
maintenance), il doit être verrouillé pour éviter tout
risque de sécurité:
Retirez la languette blanche de la poignée bleue et
insérez un cadenas dans l'un des trous.

ON/OFF/P Switch
Figure 5 shows the ON/OFF/P switch of the SE330K Inverter.
Figure 5: ON/OFF/P switch
ON (1) - Turning this switch ON (after Power Optimizer pairing) starts the operation
of the Power Optimizers, enables power production, and allows the inverter to
begin exporting power to the utility grid.
OFF (0) - Turning this switch OFF reduces the Power Optimizer Voltage to a low
safety Voltage and inhibits exportation of power. When this switch is OFF, the
Inverter control circuitry remains powered up.
P - Holding the switch pressed in P position allows performing the following
functions:
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17 Inverter Features

P Position duration Function Comments
Switch moved to P for
less than 5 seconds, then
released.
Displays production information
for 5 seconds on the SetApp
screen.
Displays error type indications (if
exist) for 5 seconds.
Activates the Wi-Fi access point
for connecting to the SolarEdge
Inverter SetApp
While the
switch is in P,
all LEDs are
ON
Switch moved to P for
more than 5 seconds,
then released.
Starts pairing 
WARNING!
The inverter cover should be opened only after shutting off the inverter, by
moving the ON/OFF/P switch to the OFF(0) position. 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!

N'ouvrir le couvercle qu'après avoir arrêté l'onduleur à l'aide de
l'interrupteur ON/OFF/P. Ceci coupe la tension DC à l'intérieur de
l'onduleur. Attendez cinq minutes avant d'ouvrir le couvercle. Sinon, il y a
risque d'électrocution du à l'énergie stockée dans les condensateurs.
Chapter 2: Inverter Overview18
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Indication LEDs
LEDs indication consists of color and state (on/ off/ blinking(1)/ flickering(2)/alternating
(3)). The LEDs indicate different system information, such as errors or performance.
Figure 6 shows the Indication LEDs of the inverter.
Generally, the main LED indications are:
COMM. ON - the inverter is communicating with the monitoring platform
POWER ON- the system is producing
POWER blinking - AC is connected but the system is not producing power
FAULT ON - system error
Figure 6: Indication LEDs
(1)Blinking = Turns ON and OFF for the same duration
(2)Flickering = Turns ON for 100 mS and turns OFF for 5 seconds
(3)Alternating = Alternate LEDs flash
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19 Inverter Features