Huawei SUN2000 Series User manual

SUN2000 Smart PV Optimizer
User Manual
Issue 03
Date 2022-09-20
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Copyright © Huawei Digital Power Technologies Co., Ltd. 2022. All rights reserved.
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The purchased products, services and features are stipulated by the contract made between Huawei
Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features
described in this document may not be within the purchase scope or the usage scope. Unless otherwise
specied in the contract, all statements, information, and recommendations in this document are
provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every eort has been made in the
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Huawei Digital Power Technologies Co., Ltd.
Address: Huawei Digital Power Antuoshan Headquarters
Futian,Shenzhen 518043
People's Republic of China
Website: https://e.huawei.com
Issue 03 (2022-09-20) Copyright © Huawei Digital Power Technologies Co., Ltd. i

About This Document
Purpose
This document describes the functions, electrical specications, and structure of
the smart photovoltaic (PV) optimizer.
Figures provided in this document are for reference only.
Intended Audience
This document is intended for:
● Sales engineers
● Technical support engineers
● Maintenance engineers
Symbol Conventions
The symbols that may be found in this guide are dened as follows.
Symbol Description
Indicates a hazard with a high level of risk which, if
not avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk which,
if not avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if
not avoided, could result in minor or moderate
injury.
Indicates a potential hazard which, if not avoided,
could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to
personal injury.
SUN2000 Smart PV Optimizer
User Manual About This Document
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Symbol Description
Supplements the important information in the main
text.
NOTE is used to address information not related to
personal injury, equipment damage, and
environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue
contains all updates made in previous issues.
Issue 03 (2021-09-20)
● Updated 5.1 SUN2000-600W-P Technical Specications.
● Updated 5.2 SUN2000-450W-P Technical Specications.
● Updated 5.3 SUN2000-450W-P2 Technical Specications.
Issue 02 (2021-03-25)
● Updated 2.1 Overview.
● Updated 5.1 SUN2000-600W-P Technical Specications.
● Updated 5.3 SUN2000-450W-P2 Technical Specications.
Issue 01 (2021-10-30)
This issue is the rst ocial release.
SUN2000 Smart PV Optimizer
User Manual About This Document
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Contents
About This Document................................................................................................................ ii
1 Safety Precautions...................................................................................................................1
2 Product Introduction...............................................................................................................4
2.1 Overview.................................................................................................................................................................................... 4
2.2 Structure..................................................................................................................................................................................... 5
2.3 Application Scenarios............................................................................................................................................................. 7
2.4 Conguration Principles........................................................................................................................................................ 8
3 Smart PV Solution Documentation...................................................................................11
4 System Maintenance............................................................................................................ 12
4.1 Setting the Physical Layout of the Smart PV Optimizers....................................................................................... 12
4.2 Detecting Optimizer Disconnection................................................................................................................................14
4.3 Rapid Shutdown.................................................................................................................................................................... 15
4.4 Troubleshooting.....................................................................................................................................................................16
4.5 Replacing an Optimizer...................................................................................................................................................... 17
5 Technical Specications....................................................................................................... 19
5.1 SUN2000-600W-P Technical Specications................................................................................................................. 19
5.2 SUN2000-450W-P Technical Specications................................................................................................................. 20
5.3 SUN2000-450W-P2 Technical Specications...............................................................................................................22
A Acronyms and Abbreviations............................................................................................. 24
SUN2000 Smart PV Optimizer
User Manual Contents
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1 Safety Precautions
General Safety
● Follow the precautions and special safety instructions provided by Huawei
when operating this product. Installation or maintenance personnel must be
well trained, fully understand all safety precautions, and be able to correctly
perform all operations. Huawei will not be liable for any consequences that
may arise due to violations of general safety requirements or safety standards
concerning the usage of the equipment.
● Before performing operations, read through the safety precautions to prevent
accidents. The information provided under the "NOTICE", "CAUTION",
"WARNING", and "DANGER" headings within this manual is not intended to
cover all applicable safety policies, and instead acts as a supplement to the
comprehensive safety information provided.
● Follow local laws and regulations when operating the equipment. The safety
instructions in this document are considered supplementary to local laws and
regulations.
● Do not operate the equipment or cables during thunderstorms.
● Before operating the product, remove any conductors such as jewelry or
watches.
● Use insulated tools during operations.
● Tighten screws using a torque wrench, and mark them in red and blue for
double-check. Installation personnel should mark tightened screws in blue.
Inspection personnel should conrm that the screws are tightened and then
mark them in red. If screws or bolts used to secure the equipment are not
tightened to the required torque, the equipment may fall o the mounting
kits.
● Follow specied procedures during installation and maintenance. Do not
modify the equipment structure or the recommended installation procedures
without prior consent from the manufacturer.
● Install the product in strict accordance with the quick guide.
Declaration
Huawei will not be liable for any consequences in any of the following
circumstances:
SUN2000 Smart PV Optimizer
User Manual 1 Safety Precautions
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● Damage during transportation
● Storage conditions that do not meet the requirements specied in this
document
● Incorrect installation or use
● Installation or use by unqualied personnel
● Failure to follow the operation instructions and safety precautions on the
product and in this document
● Operation beyond the conditions specied in this document
● Operation beyond the specied parameter ranges
● Unauthorized modications to the product or software code or removal of the
product
● Equipment damage due to force majeure (such as lightning, re, and storms)
● Warranty expired and not extended
● Installation or use in environments which are not specied in relevant
international standards
Personnel Requirements
Only qualied electricians are allowed to install, connect cables for, maintain,
troubleshoot, and replace the optimizer.
● Receive professional training.
● Read through this document and understand all safety precautions.
● Get familiar with the safety specications about the electrical system.
● Understand the composition and working principles of the grid-tied PV power
system and local regulations.
● Wear proper personal protective equipment (PPE).
Label Protection
● Do not scrawl or damage any warning labels on the optimizer because these
labels contain important information about safe operation.
● Do not scrawl or damage the nameplate on the back of the optimizer
because it contains important product information.
System Installation
● Ensure that the optimizer is not powered on during the installation.
● Reserve appropriate clearances around the optimizer for installation and heat
dissipation.
Electrical Connections
D ANGER
Before connecting cables, ensure that the optimizer is not damaged. Otherwise,
electric shocks or re may occur.
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● Ensure that all electrical connections comply with local electrical standards.
● Ensure that the cables used in a grid-tied PV power system are properly
connected and insulated and meet specications.
● The output wiring terminals of the optimizer are not hot-swappable. If the
terminals are hot-swapped, the optimizer may be damaged.
Operation
D ANGER
High voltage from the optimizer in operation may cause an electric shock,
resulting in serious property damage, injury, or death. Strictly comply with the
safety precautions in this document and other related documents when operating
the optimizer.
● Do not touch the optimizer in operation as its surface temperature is high and
may cause burning.
● When operating the equipment, comply with local laws and regulations.
Maintenance and Replacement
D ANGER
High voltage from the optimizer in operation may cause an electric shock,
resulting in serious property damage, injury, or death. Before maintenance, power
o the optimizer and strictly comply with the safety precautions in this document
and other related documents when operating the optimizer.
● Maintain the optimizer with proper understanding of this document and
appropriate tools and testing equipment.
● Place temporary warning signs or erect fences to prevent unauthorized access
to the maintenance site.
● The optimizer can be powered on only after all faults are rectied. Otherwise,
faults may escalate or equipment may be damaged.
● Observe ESD precautions and wear ESD gloves during maintenance.
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User Manual 1 Safety Precautions
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2 Product Introduction
2.1 Overview
The smart PV optimizer is a DC to DC converter which implements maximum
power point tracking (MPPT) of each PV module to improve the energy yield of
the PV system. It enables module-level shutdown and monitoring, and supports
long-string design.
Functions and Features
● Module-level MPPT: Implements maximum power point tracking of each PV
module to improve the energy yield of the PV system.
● Module-level shutdown: Adjusts the module output voltage to a safe range
when the output is disconnected or the inverter shuts down.
● Module-level monitoring: Monitors the operating status of each PV module.
● Long PV string supported: If all PV modules are congured with optimizers, a
PV string can contain more PV modules than conventional PV strings.
Model
This document involves the following product models:
● SUN2000-600W-P (Long input cable / Short input cable)
● SUN2000-450W-P
● SUN2000-450W-P2
Figure 2-1 Model description (The SUN2000-600W-P optimizer is used as an
example)
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User Manual 2 Product Introduction
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Optimizer Model Rated Input
Power
Input Cable
Length
Output Cable
Length
SUN2000-600W-P (Long input cable) 600 W 1000 mm 1300 mm
SUN2000-600W-P (Short input cable) 600 W 150 mm 1300 mm
SUN2000-450W-P 450 W 150 mm 1200 mm
SUN2000-450W-P2 450 W 150 mm 1300 mm
2.2 Structure
Optimizer Ports
Figure 2-2 Ports
(1) Output port (positive) (2) Output port (negative)
(3) Input port (negative) (4) Input port (positive)
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Optimizer Dimensions
Figure 2-3 SUN2000-600W-P (short input cable)/SUN2000-450W-P2 dimensions
Figure 2-4 SUN2000-600W-P (long input cable) dimensions
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Figure 2-5 SUN2000-450W-P dimensions
2.3 Application Scenarios
NO TE
● Select PV modules with appropriate cable length to ensure that the optimizer can
connect to PV modules.
● To minimize electromagnetic interference, ensure that the distance between the positive
and negative cables of an optimizer is minimized.
Optimizers congured for all PV modules
All PV modules are connected to optimizers.
In this scenario, the MPPT function, module-level shutdown and monitoring, and
long-string design are supported.
Figure 2-6 Optimizers congured for all PV modules
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2.4 Conguration Principles
The optimizer models supported by dierent inverters may vary, and dierent
optimizers may be congured for the same inverter. Select the optimizer model as
required.
Conguration Principles
The number of optimizers supported in a PV string, the upper limit of the string
power, and requirements for connecting PV strings in parallel vary according to the
inverter model. The conguration principles for dierent inverter models are as
follows:
NO TE
If two strings are connected in parallel to the inverter under the same MPPT circuit, the
restrictions for conguring optimizers are as follows:
● The PV strings connecting to the same MPPT should contain the same number and
model of PV modules and optimizers.
● All PV modules in the two strings must have the same orientation and tilt angle.
You are advised to use long strings instead of Y-shaped terminals.
Table 2-1 SUN2000-600W-P/SUN2000-450W-P2 conguration principles
Supported Inverter Models Number of Optimizers
Supported in the String
String Power Upper
Limit
SUN2000-2/3/3.68/4/4.6/5/6KTL-L1 4 to 25 6 kW
SUN2000-3/4/5/6/8/10KTL-M1 6 to 35 10 kW
SUN2000-8/10/12/15/17/20KTL-M2 6 to 35 12 kW
SUN2000-29.9/30/36/40KTL-M3 6 to 25 12 kW
SUN2000-20KTL-M3 (Brazil and
Japan)
6 to 25 8 kW
SUN2000-4.95KTL-JPL1 4 to 25 6 kW
SUN2000-4.95KTL-NHL2 4 to 25 6 kW
Table 2-2 SUN2000-450W-P conguration principles
Supported Inverter Models Number of Optimizers
Supported in the String
String Power
Upper Limit
SUN2000-2/3/3.68/4/4.6/5/6KTL-L1 4 to 25 5 kW
SUN2000-3/4/5/6/8/10KTL-M1 6 to 35 10 kW
SUN2000-8/10/12/15/17/20KTL-M2 6 to 35 10 kW
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User Manual 2 Product Introduction
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Supported Inverter Models Number of Optimizers
Supported in the String
String Power
Upper Limit
SUN2000-29.9/30/36/40KTL-M3 6 to 25 10 kW
SUN2000-20KTL-M3 (Brazil) 6 to 25 7 kW
Optimizers supported by Inverters
The optimizer models supported by dierent inverters may vary, as described in
the following table.
NO TE
"√" indicates supported. "×" indicates not supported.
Inverter Model SUN2000-600W-
P
SUN2000-450W-
P
SUN2000-450W-P2
SUN2000-2/3/3.68/4/4.6/5/6KTL-
L1
√ √ √
SUN2000-3/4/5/6/8/10KTL-M1 √ √ √
SUN2000-8/10/12/15/17/20KTL-
M2
√ √ √
SUN2000-29.9/30/36/40KTL-M3 √ √ √
SUN2000-4.95KTL-JPL1 √ × √
SUN2000-4.95KTL-NHL2 √ × √
SUN2000-20KTL-M3 (Brazil) √ √ √
SUN2000-20KTL-M3 (Japan) √ × √
Compatibility Between Optimizers
Dierent models of optimizers can be used in the same string. The compatibility
between dierent optimizers is described in the following table.
NO TE
"√" indicates mixed use supported. "×" indicates mixed use not supported.
Optimizer Compatibility SUN2000-600W-
P
SUN2000-450W-
P
SUN2000-450W-P2
SUN2000-450W-P √ √ √
SUN2000-600W-P √ √ √
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Optimizer Compatibility SUN2000-600W-
P
SUN2000-450W-
P
SUN2000-450W-P2
SUN2000-450W-P2 √ √ √
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User Manual 2 Product Introduction
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3 Smart PV Solution Documentation
Quick Guide
Quick installation guides for dierent optimizers are:
● SUN2000-600W-P: SUN2000-(600W-P, 450W-P2) Smart PV Optimizer
Quick Guide
● SUN2000-450W-P: SUN2000-450W-P Smart PV Optimizer Quick Guide
● SUN2000-450W-P2: SUN2000-(600W-P, 450W-P2) Smart PV Optimizer
Quick Guide
Optimizer Installation Video
See SUN2000-(600W-P, 450W-P2, 450W-P) Smart PV Optimizer Installation
Video.
You can also scan the QR code below to obtain the installation video:
SUN2000 Smart PV Optimizer
User Manual 3 Smart PV Solution Documentation
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4 System Maintenance
4.1 Setting the Physical Layout of the Smart PV
Optimizers
NO TE
● If smart PV optimizers are congured for PV strings, ensure that the smart PV
optimizers have been successfully connected to the SUN2000 before performing the
operations in this section.
● Check that the SN labels of smart PV optimizers are correctly attached to the physical
layout template.
● Take and save a photo of the physical layout template. Keep your phone parallel to the
template and take a photo in landscape mode. Ensure that the four positioning points in
the corners are in the frame. Ensure that each QR code is attached within the frame.
● For some unidentied QR codes, log in to the FusionSolar WebUI to manually bind
them. For details, see section "FAQ 3'' of FusionSolar App Quick Guide.
● For details about the physical layout of smart PV optimizers, see FusionSolar App
Quick Guide
. You can scan the QR code to download the quick guide.
Scenario 1: Setting on the FusionSolar Server Side (Solar Inverter Connected
to the Management System)
Step 1 Log in to the FusionSolar app and tap the plant name on the Home screen to
access the plant screen. Select Layout, tap , and upload the physical layout
template photo as prompted.
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Figure 4-1 Uploading the physical layout template photo
NO TE
You can also upload the physical layout template photo on the WebUI as follows: Log in to
https://intl.fusionsolar.huawei.com to access the WebUI of the FusionSolar Smart PV
Management System. On the Home page, click the plant name to go to the plant page.
Choose Layout, click Click to Upload, and upload the physical layout template photo.
Figure 4-2 Uploading the physical layout template photo (Web)
Step 2 Log in to https://intl.fusionsolar.huawei.com to access the WebUI of the
FusionSolar Smart PV Management System. On the Home page, click the plant
name to go to the plant page. Select Layout. Choose Generate layout, and create
a physical layout as prompted. You can also manually create a physical location
layout.
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Figure 4-3 Physical layout design of PV modules
----End
Scenario 2: Setting on the Solar Inverter Side (Solar Inverter Not Connected
to the Management System)
Step 1 Access the Device Commissioning screen on the FusionSolar app to set the
physical layout of Smart PV Optimizers.
1. Log in to the FusionSolar app. On the Device Commissioning screen, choose
Maintenance > Optimizer layout. The Optimizer layout screen is displayed.
2. Tap the blank area. The Identify image and Add PV modules buttons are
displayed. You can use either of the following methods to perform operations
as prompted:
– Method 1: Tap Identify image and upload the physical layout template
photo to complete the optimizer layout. (The optimizers that fail to be
identied need to be manually bound.)
– Method 2: Tap Add PV modules to manually add PV modules and bind
the optimizers to the PV modules.
Figure 4-4 Physical layout design of PV modules
----End
4.2 Detecting Optimizer Disconnection
Log in to the FusionSolar app, choose Device Commissioning > Maintenance >
Optimizer disconnection detection, tap the detection button to detect the
optimizer disconnection, and rectify the fault based on the detection result.
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Figure 4-5 Detect optimizer disconnection
4.3 Rapid Shutdown
When the output is disconnected or the inverter shuts down, the optimizer can
adjust the module output voltage to a safe range to ensure the safety of the
construction and O&M personnel as well as reghters.
NO TE
● The rapid shutdown function is not supported if optimizers are congured for some PV
modules.
● You are advised to periodically check whether the rapid shutdown function is normal.
If optimizers are congured for all PV modules, the PV system can perform a rapid
shutdown to decrease the output voltage to below 120 V within 15s and to below
30 V within 30s.
Perform the following steps to trigger a rapid shutdown:
● Method 1: Turn o the AC switch between the inverter and the power grid.
● Method 2: Turn o the DC switch on the inverter.
● Method 3: Connect a switch to the DI and GND ports of the inverter to form a
circuit. (For details about the DI port, see the corresponding inverter user
manual.) The switch is turned on by default. Turn o the switch to trigger a
rapid shutdown.
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