Huawei SmartACBox-12/1-JP User manual

SmartACBox 12-In 1-Out Smart AC Combiner
Box
User Manual
Issue
03
Date
2018-05-15
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd.
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Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei 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 specified 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 effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
https://e.huawei.com

SmartACBox 12-In 1-Out Smart AC Combiner Box
User Manual
About This Document
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About This Document
Purpose
This document describes the SmartACBox-12/1-JP (SmartACBox for short) in terms of its
installation, electrical connections, commissioning, maintenance, and troubleshooting. Before
installing and operating the SmartACBox, ensure that you are familiar with the features,
functions, and safety precautions provided in this document.
Intended Audience
This document is intended for operators of the grid-tied photovoltaic (PV) power system and
electrical technicians.
Symbol Conventions
The symbols that may be found in this document are defined 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 potentially hazardous situation 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.
Supplements the important information in the main text.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.

SmartACBox 12-In 1-Out Smart AC Combiner Box
User Manual
About This Document
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Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 03 (2018-05-15)
Updated 4.6 Opening the Enclosure Door.
Updated 4.7 Installing the Router.
Updated 5.5 Installing Router Cables.
Issue 02 (2018-02-12)
Updated 5.1 Cable Specifications.
Issue 01 (2017-10-16)
This issue is used for first office application (FOA).

SmartACBox 12-In 1-Out Smart AC Combiner Box
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Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Overview.........................................................................................................................................4
2.1 Introduction ..................................................................................................................................................................4
2.2 Appearance ...................................................................................................................................................................6
2.3 Label Description..........................................................................................................................................................8
2.4 Working Principles......................................................................................................................................................10
2.5 Monitoring System Networking .................................................................................................................................10
3 Storage...........................................................................................................................................12
4 Installation....................................................................................................................................13
4.1 Checking Before Installation ......................................................................................................................................13
4.2 Tools and Instruments.................................................................................................................................................13
4.3 Determining the Installation Position .........................................................................................................................15
4.4 Installing the Mounting Bracket .................................................................................................................................16
4.4.1 Wall-mounted Installation........................................................................................................................................17
4.4.2 Support-mounted Installation ..................................................................................................................................19
4.4.3 Pole-mounted Installation........................................................................................................................................21
4.5 Installing the SmartACBox.........................................................................................................................................22
4.6 Opening the Enclosure Door.......................................................................................................................................24
4.7 Installing the Router ...................................................................................................................................................26
5 Electrical Connections................................................................................................................30
5.1 Cable Specifications ...................................................................................................................................................30
5.2 Crimping the OT Terminal..........................................................................................................................................31
5.3 Knocking Off Barrier Chips from Cable Holes ..........................................................................................................32
5.4 Installing the PE Cable ...............................................................................................................................................33
5.5 Installing Router Cables..............................................................................................................................................34
5.5.1 Installing the Power Cable Between the Power Adapter and the Router .................................................................35
5.5.2 Installing the Network Cable Between the Router and the SmartLogger1000 ........................................................35
5.5.3 Installing the Router Antenna ..................................................................................................................................36
5.6 Installing the RS485 Communications Cable.............................................................................................................38
5.7 Connecting a single-phase power cable......................................................................................................................39

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5.8 Installing the AC Input Power Cable ..........................................................................................................................41
5.9 Installing the AC Output Power Cable........................................................................................................................42
6 Operation ......................................................................................................................................45
6.1 Checking Before Power-On........................................................................................................................................45
6.2 Installing the Cover.....................................................................................................................................................45
6.3 Powering On the System.............................................................................................................................................46
6.4 Powering Off the System............................................................................................................................................46
6.5 Closing the Enclosure Door........................................................................................................................................47
6.6 Configuring the Router Network ................................................................................................................................47
6.7 Setting the SmartLogger1000 Communications Parameters ......................................................................................47
6.7.1 LCD Monitoring Panel ............................................................................................................................................48
6.7.2 Embedded WebUI....................................................................................................................................................56
7 Maintenance.................................................................................................................................61
7.1 Routine Maintenance..................................................................................................................................................61
7.2 Parts Replacement ......................................................................................................................................................62
7.2.1 Replacing the Single-Phase Power Circuit Breaker or AC Input Circuit Breaker ...................................................62
7.2.2 Replacing the AC Output Circuit Breaker ...............................................................................................................64
7.2.3 Replacing the SmartLogger1000 .............................................................................................................................65
7.2.4 Replacing the RS485 Signal SPD............................................................................................................................67
7.2.5 Replacing the Power SPD........................................................................................................................................67
7.2.6 Replacing the Power Adapter ..................................................................................................................................68
7.2.7 Replacing the USB Port...........................................................................................................................................69
8 Technical Specifications ............................................................................................................71
A Acronyms and Abbreviations..................................................................................................72

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1 Safety Precautions
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1 Safety Precautions
General Safety
Personnel who plan to install or maintain Huawei equipment must receive a thorough training,
understand all necessary safety precautions, and be able to correctly perform all operations.
Only certified personnel are allowed to remove safety facilities and inspect the
equipment.
Only personnel certified or authorized by Huawei are allowed to replace devices or
components (including software).
Any fault or error that might cause safety problems must be reported immediately to a
supervisor.
Read this document thoroughly before operations. Huawei shall not be liable for any device
damage caused by violation of the storage, transportation, installation, and operation
regulations specified in this document.
The safety precautions provided in this document do not cover all the safety precautions.
Huawei shall not be liable for any consequence caused by the violation of the safety operation
regulations and design, production, and usage standards.
Local Laws and Regulations
Follow local laws and regulations when operating equipment. The safety instructions in this
document are only supplements to local laws and regulations.
Grounding
Equipment to be grounded must meet the following requirements:
When installing equipment, connect the protective earthing (PE) cable first. When
removing equipment, disconnect the PE cable last.
Do not damage the ground conductor.
Do not operate equipment in the absence of a properly installed ground conductor.
Equipment must be connected permanently to the PE point before an operation.

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Before operating equipment, check the electrical connection of the equipment to ensure
that it is securely grounded.
Personal Safety
To avoid electric shocks, ensure that AC INPUT andAC OUTPUT connections are not
reversed.
Before operating equipment, remove any conductors such as jewelry and watches to
avoid electric shock or burns.
For personal safety during operation and maintenance, insulation gloves and safety shoes
must be put on.
Use tools in correct methods to avoid hurting people or damaging devices.
In the case of a fire, immediately leave the building or the equipment area, and turn on
the fire alarm bell or make an emergency call. Never enter the building on fire in any
case.
When the operation is performed in a damp environment, ensure that the equipment is
dry. When water is found in the cabinet or the cabinet is damp, switch off the power
supply immediately.
Equipment Security
Before operation, ensure that the equipment is firmly anchored to the floor or other solid
objects, such as a wall or an installation rack.
Use a tool to tighten screws when installing components.
After the installation, remove the packing materials from the equipment area.
High voltage
High-voltage power is supplied to equipment. Direct contact with the high-voltage power
or indirect contact through damp objects is fatal.
Non-standard and improper operations will result in fire or electric shocks.
The installation and operation of high-voltage AC equipment must be performed only by
certified personnel.
Comply with local laws and regulations when bridging and routingAC cables.
When operating AC equipment, follow local laws and regulations.
Use dedicated tools when performing high voltage andAC operations.
Put on insulation gloves before powering on or off cabinets.
Power Cables

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Do not connect or disconnect power cables under power. Transient contact between the core
wire of a power cable and the conductor will generate electric arcs or sparks, which may
cause fire or personal injury.
Before installing or removing a power cable, turn off the upstream power switch, and use
a multimeter to check that theAC voltage of the input port is zero.
Before connecting a power cable, check that the label on the power cable is correct.
Do not connect a single-phase AC power cable reversely. Otherwise, equipment may be
damaged.
Component
To ensure the safe operation of equipment, replace a faulty component with a component of
the same type and specifications.

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2 Overview
2.1 Introduction
Function
The SmartACBox combines the AC outputs from single-phase string inverters. The
SmartACBox works with Huawei SUN2000L and combines the outputs from the following
types of SUN2000Ls:
Up to 12 SUN2000L-4.125KTL-JP units
Up to 10 SUN2000L-4.95KTL-JP units
The SUN2000L-4.125KTL-JP and SUN2000L-4.95KTL-JP are both abbreviated as SUN2000L in the
following text.
The SmartACBox is embedded with a SmartLogger that connects to Huawei SUN2000L over
RS485 to collect data from SUN2000Ls, so that the SUN2000Ls can be managed in a
centralized manner. The user purchases and installs a 3G/4G router and connects the router to
the 3G/4G network over which the collected SUN2000L data is uploaded to the cloud server.
The utility company remotely controls SUN2000Ls through the obtained SUN2000L data file.
Models
Figure 2-1 shows the designation explanation of the SmartACBox.
Figure 2-1 Designation explanation

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System Application
The SmartACBox applies to a low-voltage single-phase three-wire grid-tied PV system that
typically consists of PV strings, grid-tied inverters, andAC combiner boxes. Figure 2-2 shows
the position of the SmartACBox in a low-voltage single-phase three-wire grid-tied PV system.
Figure 2-2 System application
(A) PV string
(B) SUN2000L
(C) SmartACBox
(D) Low-voltage power grid

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2.2 Appearance
Dimensions
Figure 2-3 Dimensions
Front View
Figure 2-4 Front view
(1) Monitoring compartment door
(2) Enclosure door lock
(3) Power compartment door

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Rear view
Figure 2-5 Rear view
(1) Mounting plate
Bottom view
Figure 2-6 Bottom view
Table 2-1 Bottom description
No.
Component Name
Silk Screen
Description
1
Cable gland for the
RS485
communications cable
COM
Connects to a peripheral RS485
communications cable.
Inner diameter: 25.5 mm

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No.
Component Name
Silk Screen
Description
2
Cable gland for the
3G/4G antenna
3G/4G
Connects to the antenna of a 3G/4G
router.
Inner diameter: 16.5 mm
3
Cable gland for the
single-phase power
cable
AC INPUT
Connects to the external
single-phase input power cable for
the SmartLogger1000 and router.
Inner diameter: 25.5 mm
4
Cable hole for the AC
output power cable
AC OUTPUT
Connects to the AC output power
cable.
Inner diameter: 76 mm
5
Cable hole 1 for the
AC input power cable
AC INPUT1
Connects to the AC input power
cable.
Inner diameter: 76 mm
6
Cable hole 2 for the
AC input power cable
AC INPUT2
Connects to the AC input power
cable.
Inner diameter: 76 mm
7
USB port
USB
Connects to a USB flash drive for
the SmartLogger1000 to import data,
export data, and upgrade firmware.
8
Ventilation valve
N/A
N/A
9
PE point
N/A
N/A
2.3 Label Description
Enclosure Labels
Table 2-2 describes the labels on the SmartACBox enclosure.
Table 2-2 Enclosure label description
Label
Name
Meaning
Electric shock
High voltage exists after the
SmartACBox is powered on. Only
certified electricians may install and
operate the SmartACBox.
Grounding
Indicates the position for connecting
the PE cable.

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Label
Name
Meaning
Operation warning
Before removing the SmartACBox
cover, disconnect all AC power
supplies.
Weight label
The SmartACBox is heavy and needs
to be carried by more than one person.
Nameplate
The SmartACBox is labeled with a nameplate on the side that contains the model information,
technical specifications, and compliance symbols, as shown in Figure 2-7.
Figure 2-7 Nameplate
(1) Trademark, product name, and model
number
(2) Important technical specifications
(3) Compliance symbols
(4) Company name and country of
manufacture
The nameplate figure is for reference only.
Table 2-3 Compliance label description
Label
Name
Meaning
Environmentally friendly use
period (EFUP)
This product is environmentally
friendly for at least 50 years.
European Union (EU) waste
electrical and electronic
equipment (WEEE)
This product must not be disposed of
as domestic waste.

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2.4 Working Principles
The SmartACBox works with Huawei SUN2000L. It combines the outputs from up to 12
SUN2000L-4.125KTL-JP units or 10 SUN2000L-4.95KTL-JP units and provides surge
protection and overcurrent protection. In addition, the SmartACBox is embedded with a
SmartLogger that forms a monitoring system by working with the router purchased and
installed by users. The monitoring system uploads collected SUN2000Linformation to the
cloud server in order to monitor SUN2000Ls in real time.
Figure 2-8 shows the SmartACBox working principles by using the access from 12
SUN2000L-4.125KTL-JP units as an example.
Figure 2-8 Working principles
2.5 Monitoring System Networking
Figure 2-9 shows the network diagram for the monitoring system of the SmartACBox, in
which the router needs to be purchased and installed by yourself.

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Figure 2-9 Monitoring system network diagram

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3 Storage
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3 Storage
The following requirements should be met when the SmartACBox needs to be stored prior to
installation:
Do not unpack the SmartACBox.
Keep the storage temperature at –30°C to +70°C and the humidity at 5%–95% RH.
The SmartACBox should be stored in a clean and dry place and be protected from dust
and water vapor corrosion.
A maximum of three SmartACBoxes can be stacked.
Regular inspection is required during the storage. Replace the packing materials when
necessary.
After long-term storage, an inspection and test conducted by qualified persons are
necessary before the SmartACBox is put into use.

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4 Installation
4.1 Checking Before Installation
Outer Packing Materials
Before unpacking the SmartACBox, check the outer packing materials for damage, such as
holes and cracks. If any damage is found, do not unpack the SmartACBox and contact the
dealer immediately.
You are advised to remove the outer packaging within 24 hours before installing the SmartACBox.
Package Contents
After unpacking the SmartACBox, check that the contents are intact and complete. If any
damage is found or any component is missing, contact your dealer.
For details about the number of contents, see the Packing List in the packing case.
4.2 Tools and Instruments
Type
Tools and Instruments
Installati
on tools
Hammer drill (drill bit: Ф14
mm and Ф16 mm)
Socket wrench
Torque wrench

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Type
Tools and Instruments
Torque screwdriver
Wire stripper
Diagonal pliers
Rubber mallet
Utility knife
Cable cutter
Hydraulic pliers
Crimping tool
Multimeter
SPD module extracting unit
Flat-head screwdriver
Adjustable wrench (open end:
32 mm)
Vacuum cleaner
Marker
Measuring tape
Bubble or digital level
Heat shrink tubing
Heat gun