Huawei ACBox2000-21-D0-A-US User manual

Part Number: 31010WDW
ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
Issue
01
Date
2016-12-15
HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2016-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2016. 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:
http://e.huawei.com

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
About This Document
Issue 01 (2016-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
ii
About This Document
Purpose
This document describes theACBox2000-21-D0-A-US (ACBox2000 for short) in terms of
the installation, cable connections, and maintenance. Read through this document to
understand the safety information as well as theACBox2000 functions and features before
installing and operating theACBox2000.
Intended Audience
This document is intended for grid-tied photovoltaic (PV) power system personnel and
qualified electrical technicians.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
Indicates an imminently hazardous situation which, if not
avoided, will result in serious injury or death.
Indicates a potentially hazardous situation which, if not
avoided, could result in serious injury or death.
Indicates a potentially hazardous situation which, if not
avoided, may 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.
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal
injury, equipment damage, or environment deterioration.

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
About This Document
Issue 01 (2016-12-15)
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Copyright © Huawei Technologies Co., Ltd.
iii
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 01 (2016-12-15)
This issue is the first official release.

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Product Overview .........................................................................................................................4
2.1 Introduction ..................................................................................................................................................................4
2.2 Label Conventions........................................................................................................................................................6
2.3 Working Principle.........................................................................................................................................................7
3 ACBox2000 Storage.......................................................................................................................9
4 Installation....................................................................................................................................10
4.1 Checking Before Installation ......................................................................................................................................10
4.2 Tools ...........................................................................................................................................................................10
4.3 Installation Dimensions ..............................................................................................................................................14
4.4 Determining the Installation Position .........................................................................................................................14
4.5 Wall-Mounted Installation ..........................................................................................................................................15
4.6 Support-Mounted Installation.....................................................................................................................................17
4.7 Pole-Mounted Installation...........................................................................................................................................20
5 Electrical Connections................................................................................................................22
5.1 Safety Precautions ......................................................................................................................................................22
5.2 Cable Specifications ...................................................................................................................................................22
5.3 Opening the Chassis Door ..........................................................................................................................................23
5.4 Connecting a Ground Cable........................................................................................................................................24
5.5 Connecting AC Input Power Cable 1..........................................................................................................................26
5.6 Connecting AC Input Power Cable 2..........................................................................................................................28
5.7 Connecting an AC output power cable .......................................................................................................................30
5.8 Closing the Chassis Door............................................................................................................................................32
6 System Commissioning .............................................................................................................35
6.1 Checking Before Power-On........................................................................................................................................35
6.2 System Power-On.......................................................................................................................................................36
6.3 Powering Off the ACBox2000....................................................................................................................................36
7 Routine Maintenance .................................................................................................................37
8 Technical Specifications ............................................................................................................38

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
1 Safety Precautions
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1 Safety Precautions
General Safety
Huawei equipment can be installed, operated, and maintained only by personnel who have
received a thorough training, understood all necessary safety precautions, and are able to
correctly perform all operations.
Only trained and qualified personnel are allowed to install, operate, and maintain Huawei
equipment.
Only qualified 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
consequence 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 will 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
When operating Huawei equipment, you must follow the local laws and regulations. The
safety instructions in this document are only supplements to local laws and regulations.
Grounding Requirements
Comply with the following requirements for devices to be grounded:
When installing a device, install the ground cable first. When removing a device, remove
the ground cable at the very end.

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
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Do not damage the ground conductor.
Do not operate the device in the absence of a properly installed ground conductor.
The device must be connected permanently to the protection ground before any
operation.
Before operating the device, check the electrical connection of the device to ensure that
it is securely grounded.
Personal Safety
To avoid electric shock, ensure thatAC INPUT andAC OUTPUT connections are not
reversed.
Before using a device, remove any conductors such as jewelry or watches to avoid
electric shock or burns.
In case of fire, immediately leave the building or the equipment area, and turn on the fire
alarm bell or make an emergency call. Do not enter the building on fire in any case.
When the operation is performed in a damp environment, ensure that the device is dry. If
detecting water or signs of dampness in the cabinet, disconnect the power supply
immediately.
Device Safety
The device must be fixed securely on the floor or to other immovable objects such as
walls and mounting racks before performing operations.
Tighten the screws by using a tool when installing components.
After the installation, remove packing materials from the equipment area.
High Voltage
The high voltage power supply provides power for the device operation. Direct or indirect
contact (especially with a damp object) with the high voltage power supply may result in
fatal injury.
Non-standard and improper high voltage operations may result in fire and electric shock.
Personnel who perform high voltage operations and installAC facilities must be
qualified to perform high voltage andAC operations.
Comply with local laws and regulations when bridging and wiringAC cables.
Follow local laws and regulations when operatingAC-powered devices.
Use dedicated tools when performing high voltage andAC operations.
Power Cable

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
1 Safety Precautions
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Do not install or remove power cables for a device which is powered on. Transient contact
between the core of a power cable and a conductor may generate electric arcs or sparks, which
may cause fire or hurt eyes.
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.
Component
To ensure that a device runs safely, replace a failed device component with a component of
the same type and specifications.

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2 Product Overview
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2 Product Overview
2.1 Introduction
Function
The ACBox2000 is mainly used to combine inverterAC outputs. It also functions as a
maintenance switch that turns off when the inverter is being maintained to isolate the AC
voltage at the low-voltage side of the box-type transformer.
Model
Figure 2-1 describes the model number for theACBox2000.
Figure 2-1 Model number description
Network Application
Figure 2-2 shows the location of the ACBox2000 in a grid-tied PV power system.

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Figure 2-2 Networking
The ACBox2000 functions as only the local maintenance isolation switch of the inverter
and turns off when the inverter needs to be maintained to ensure that the inverter is
isolated from the power grid.
If theACBox2000 is used in a grid-tied PV power system, the system on the AC side
should meet the safety design specifications, such as NFPA_70.
It is recommended that theACBox2000 be installed near the inverter.
Appearance
Figure 2-3 shows an ACBox2000.

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Figure 2-3 Appearance
2.2 Label Conventions
Identifiers
Symbol
Name
Meaning
High voltage warning
The ACBox2000 operates
at high voltage. All
operations on the
ACBox2000 may only be
carried out by a trained
electrician.
Operation warning
Before removing the
ACBox2000 cover,
disconnect all AC power
supplies.
Refer to instructions
Remind operators to refer
to the instructions shipped
with the ACBox2000.

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Nameplate
The ACBox2000 is labeled with a nameplate on the side that contains the model information,
technical specifications, and compliance symbols, as shown in Figure 2-4.
Figure 2-4 Nameplate
(1) Trademark, product name, and model
number
(2) Important technical specifications
(3) Compliance symbols
(4) Company name and country of
manufacture
Table 2-1 describes the compliance symbols.
Table 2-1 Compliance symbols
Symbol
Name
Meaning
Compliance with CSA
certification of America
and Canada
This ACBox2000
complies with CSA
certification standards.
Environmentally friendly
use period (EFUP)
The ACBox2000 is
environmentally friendly
for the specified period.
EU WEEE mark
The ACBox2000 must not
be disposed of as
domestic waste.
2.3 Working Principle
Figure 2-5 shows the ACBox2000 working principle.

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Figure 2-5 Working principle

ACBox2000-21-D0-A-US
User Manual (U.S. Edition)
3 ACBox2000 Storage
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3 ACBox2000 Storage
If theACBox2000 will not be used immediately, store it according to the following
requirements:
Do not remove the outer packing of theACBox2000.
Keep the storage temperature at –40°C (–40°F) to +70°C (+158°F) and the humidity at
4%–100% RH.
The ACBox2000 should be stored in a clean and dry place and be protected from dust
and water vapor.
A maximum of six ACBox2000s can be stacked.
Periodic inspections are required during storage. If any rodent bites are found, replace
the packing materials promptly.
Before using anACBox2000 that has been stored for a long period, ensure that it is
inspected and tested by professionals.

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4 Installation
4.1 Checking Before Installation
Checking the Outer Packing
Before unpacking theACBox2000, examine the outer packing for damage such as holes and
cracks. If any such damage is found, do not unpack theACBox2000 and contact the dealer
immediately.
Remove the outer packing only 24 hours before installing the ACBox2000.
Checking the Product and Accessories
After unpacking theACBox2000, check the product and accessories. If any damage is found
or any component is missing, contact the dealer.
For the number of items included in the delivery, see the Packing List in the packing case.
4.2 Tools
Tool
Model
Function
Hammer drill
Drill bit: Φ14 mm (0.55
in.) and Φ16 mm (0.63
in.)
Drill bit: Φ14 mm (0.55 in.),
used for drilling holes in
supports
Drill bit: Φ16 mm (0.63 in.),
used for drilling holes in walls

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Tool
Model
Function
Socket wrench
N/A
Secures bolts and AC output
terminals.
Torque wrench
Open end: 18 mm (0.71
in.)
Secures bolts.
Diagonal pliers
N/A
Cut cable ties.
Wire stripper
N/A
Peels cable jackets.
Rubber mallet
N/A
Hammers expansion bolts into
holes.
Utility knife
N/A
Removes packages.

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Tool
Model
Function
Cable cutter
N/A
Cuts power cables.
Vacuum cleaner
N/A
Cleans up dust after drilling holes.
Marker
Diameter ≤ 10 mm (0.39
in.)
Marks signs.
Measuring tape
N/A
Measures distances.
Level
N/A
Levels hole positions.
Protective gloves
N/A
Protect your hands during
installation.

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Tool
Model
Function
Safety goggles
N/A
Protect your eyes during hole
drilling.
Anti-dust respirator
N/A
Protects you from dust during hole
drilling.
Hydraulic pliers
N/A
Crimp OT terminals.
Heat shrink tubing
N/A
Wraps the cable crimping area of
an OT terminal.
Heat gun
N/A
Heat-shrinks a tube.
Cable tie
N/A
Binds cables.

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4.3 Installation Dimensions
Figure 4-1 shows the installation dimensions for the ACBox2000.
Figure 4-1 Installation dimensions
The following table describes the waterproof cable connector specifications.
Silk Screen
Model
Diameter Range
AC INPUT1
PG48
37–42 mm (1.46–1.65 in.)
AC INPUT2
PG48
37–42 mm (1.46–1.65 in.)
AC OUTPUT
PG48
37–42 mm (1.46–1.65 in.)
GND
1NPT
18–23 mm (0.71–0.91 in.)
4.4 Determining the Installation Position
The ACBox2000 is protected to IP65/Type 3R and can be installed indoors or outdoors.
Do not install theACBox2000 in areas with flammable or explosive materials.
Do not install theACBox2000 on flammable building materials.
The carrier where theACBox2000 is installed must be fireproof.
The ACBox2000 weighs 11 kg (24.25 lb). Ensure that installation surface is solid enough
to bear the ACBox2000.

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The ACBox2000 chassis dimensions (W x H x D) are 400 mm (15.75 in.) x 450 mm
(17.72 in.) x 140 mm (5.51 in.). Reserve sufficient space around theACBox2000 to
facilitate installation and cable connection.
Figure 4-2 Installation space
4.5 Wall-Mounted Installation
Procedure
Step 1 Locate the positions for drilling holes based on the ACBox2000 installation dimensions, level
the hole positions using a level, and mark holes using a marker.
Figure 4-3 Marking holes