Huawei DPU40D-N06A3 User manual

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
Issue
04
Date
2020-02-29
HUAWEI TECHNOLOGIES CO., LTD.

Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2020. 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

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
About This Document
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
ii
About This Document
Purpose
This document describes the distributed power system in terms of overview, components,
maintenance, and technical specifications.
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 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.

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
About This Document
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
iii
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Issue 04 (2020-02-29)
Modified 2.3 System Configuration.
Modified A Technical Specifications.
Issue 03 (2019-11-28)
Modified 1 Safety Precautions.
Modified A Technical Specifications.
Issue 02 (2019-07-22)
Update LIVE-C APP content.
Issue 01 (2019-06-30)
This is the first official release.

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
Contents
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
iv
Contents
About This Document ............................................................................................................... ii
1 Safety Precautions.................................................................................................................... 1
1.1 General Safety....................................................................................................................................................... 1
1.2 Personnel Requirements ........................................................................................................................................ 5
1.3 Electrical Safety.................................................................................................................................................... 5
1.4 Installation Environment Requirements.................................................................................................................. 7
1.5 Mechanical Safety................................................................................................................................................. 8
1.6 Battery Safety.......................................................................................................................................................11
2 Overview ................................................................................................................................. 15
2.1 Introduction..........................................................................................................................................................15
2.2 Features................................................................................................................................................................16
2.3 System Configuration...........................................................................................................................................17
3 Components ............................................................................................................................ 19
3.1 PSU (DPU40D-N06A3) .......................................................................................................................................19
3.2 Lithium Battery (DBU20B-N12A3/DBU50B-N12A1)..........................................................................................23
4 (Optional) LIVE-C APP ......................................................................................................... 27
4.1 Installing the LIVE-C APP ...................................................................................................................................27
4.2 Logging In to the LIVE-C APP.............................................................................................................................27
5 Maintenance............................................................................................................................ 30
5.1 Preventive Maintenance........................................................................................................................................30
5.1.1 Exterior.............................................................................................................................................................30
5.1.2 Distributed Power Unit......................................................................................................................................31
5.1.3 Lithium Battery .................................................................................................................................................31
5.1.4 Cable.................................................................................................................................................................32
5.2 Rectifying Common Faults...................................................................................................................................33
5.2.1 AC Power Failure ..............................................................................................................................................33
5.2.2 AC Overvoltage.................................................................................................................................................33
5.2.3 AC Undervoltage...............................................................................................................................................34
5.2.4 DC Overvoltage.................................................................................................................................................34
5.2.5 DC Undervoltage...............................................................................................................................................34
5.2.6 Parallel Fail.......................................................................................................................................................34

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
Contents
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
v
5.2.7 Communication Failure .....................................................................................................................................35
5.2.8 Rectifier Fault....................................................................................................................................................35
5.2.9 Rectifier Power Failure......................................................................................................................................35
5.2.10 Communication Failure (ESMU)......................................................................................................................36
5.2.11 All ESMU Communication Failure...................................................................................................................36
5.2.12 Board Hardware Fault......................................................................................................................................36
5.2.13 Low Temperature Protection ............................................................................................................................36
5.2.14 High Temperature Protection............................................................................................................................36
5.2.15 Overcharge Protection......................................................................................................................................37
5.2.16 Overdischarge Protection.................................................................................................................................37
5.2.17 Battery Cell N Fault.........................................................................................................................................37
5.2.18 Discharge Overcurrent Protection.....................................................................................................................37
5.2.19 Charge Overcurrent Protection.........................................................................................................................38
5.2.20 Heater Fault.....................................................................................................................................................38
5.2.21 BMU Missing..................................................................................................................................................38
5.3 Component Replacement......................................................................................................................................38
5.3.1 Replacing a Quick Connector (PSU) ..................................................................................................................39
5.3.2 Replacing a Quick Connector (Lithium Battery).................................................................................................42
5.3.3 Replacing a PSU (PSU Only).............................................................................................................................43
5.3.4 Replacing PSUs (Interconnected PSUs)..............................................................................................................45
5.3.5 Replacing a PSU (PSU Plus Lithium Battery).....................................................................................................48
5.3.6 Replacing a Lithium Battery (Lithium Battery Only)..........................................................................................49
5.3.7 Replacing a Lithium Battery (PSU Plus Lithium Battery) ...................................................................................51
5.3.8 Replacing a DC Fuse.........................................................................................................................................53
A Technical Specifications....................................................................................................... 56
B Alarm Description ................................................................................................................. 62
C Acronyms and Abbreviations.............................................................................................. 63

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
1 Safety Precautions
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
1
1 Safety Precautions
1.1 General Safety
Statement
Before installing, operating, and maintaining the equipment, read this document and observe
all the safety instructions on the equipment and in this document.
The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document
do not cover all the safety instructions. They are only supplements to the safety instructions.
Huawei will not be liable for any consequence caused by the violation of general safety
requirements or design, production, and usage safety standards.
Ensure that the equipment is used in environments that meet its design specifications.
Otherwise, the equipment may become faulty, and the resulting equipment malfunction,
component damage, personal injuries, or property damage are not covered under the warranty.
Follow local laws and regulations when installing, operating, or maintaining the equipment.
The safety instructions in this document are only supplements to local laws and regulations.
Huawei will not be liable for any consequences of the following circumstances:
Operation beyond the conditions specified in this document
Installation or use in environments which are not specified in relevant international or
national standards
Unauthorized modifications to the product or software code or removal of the product
Failure to follow the operation instructions and safety precautions on the product and in
this document
Equipment damage due to force majeure, such as earthquakes, fire, and storms
Damage caused during transportation by the customer
Storage conditions that do not meet the requirements specified in this document
General Requirements
Before installing, operating, or maintaining the equipment, remove any conductive
objects such as watches or metal jewelry like bracelets, bangles, and rings to avoid
electric shock.

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
1 Safety Precautions
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
2
When installing, operating, or maintaining the equipment, wear dedicated protective
gears such as insulation gloves, goggles, and safety clothing, helmet, and shoes, as
shown in the following figure.
Use insulated tools or tools with insulated handles, as shown in the following figure.
Follow the specified procedures for installation, operation, and maintenance.
Ensure that bolts are tightened with a torque wrench and marked using red or blue color.
Installation personnel mark tightened bolts in blue. Quality inspection personnel confirm
if the bolts are tightened and then mark them in red. (The marks should cross the edges
of the bolts, as shown in the following figure.)
Before installing, operating, or maintaining a cabinet, clean up any water, ice, snow, or
other sundries on the top of the cabinet to prevent sundries from falling into the cabinet
when you open the cabinet door.

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
1 Safety Precautions
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
3
Do not install, use, or operate outdoor equipment and cables (including but not limited to
moving equipment, operating equipment and cables, inserting connectors to or removing
connectors from signal ports connected to outdoor facilities, working at heights, and
performing outdoor installation) in harsh weather conditions such as lightning, rain,
snow, and level 6 or stronger wind.
Before handling a conductor surface or terminal, measure the contact point voltage and
ensure that there is no risk of electric shock.
Ensure that all slots are installed with boards or filler panels. Avoid hazards caused by
hazardous voltages or energy on boards. Ensure that the air channel is normal, control
electromagnetic interference, and prevent dust and other sundries on the backplane,
baseplate, and boards.
After installing the equipment, remove idle packing materials such as cartons, foam,
plastics, and cable ties from the equipment area.
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. Do not enter the building on fire in any
case.
Do not stop using protective devices. Pay attention to the warnings, cautions, and related
precautionary measures in this document and on the equipment. Promptly replace
warning labels that have worn out.
Keep irrelevant people away from the equipment. Only operators are allowed to access
the equipment.
All cable holes should be sealed. Seal the used cable holes with firestop putty. Seal the
unused cable holes with the caps delivered with the cabinet. The following figure shows
the criteria for correct sealing with firestop putty.
Do not use water, alcohol, oil, or other solvents to clean electrical components inside and
outside a cabinet.
Personal Safety
If there is a probability of personal injury or equipment damage during operations on the
equipment, immediately stop the operations, report the case to the supervisor, and take
feasible protective measures.
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to
telecommunication network voltage (TNV) circuits.
Do not power on the equipment before it is installed or confirmed by professionals.

DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
1 Safety Precautions
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
4
Symbol Conventions
To ensure personal and equipment safety, observe all the safety instructions marked on the
equipment when installing, operating, and maintaining the equipment.
Symbol
Description
Indicates a part exposed to high voltage. This symbol warns
operators that both direct and indirect contact with the power grid
is fatal. Such areas include hazardous voltage points or protective
power supply covers that may be removed during maintenance.
Warns users of overheating. This symbol is attached to a device
surface that may overheat and cause scalding. It warns users not to
touch the surface during operations or maintenance. Users should
wear heat insulation gloves before operations to prevent scalding.
or
Indicates protection earthing. This symbol is attached next to a
protection ground terminal next to grounded equipment and an
external ground system. An equipment ground cable is connected
to an external ground bar through the protection ground terminal.
Indicates equipotential bonding. This symbol is found with
equipotential terminals inside equipment.
Indicates electrostatic discharge (ESD). This symbol is used in all
electrostatic sensitive areas. Before operating equipment in these
areas, wear ESD gloves or an ESD wrist strap.
Indicates that the equipment is safe to use at altitudes below 2000
m (6561.6 ft.).
Indicates that the equipment is not safe to use in tropical climates.
or
Indicates a fan assembly or moving part. This symbol is
silkscreened on or attached to the panel of a fan assembly,
warning operators to keep away. Do not touch the blades when the
fan is rotating.
or
or
Indicates that users should refer to the instruction. This symbol is
used when the usage of a device port cannot be clearly described.
For example, this symbol can be used in but not limited to the
following scenarios:
1. For a multi-power device, use it near the power supply to
replace the multi-power supply identifier. The symbol indicates
that the device has multiple power inputs. Therefore, when
powering off the device, you must disconnect all power inputs.
2. If there are multiple output ports, use the symbol near the
output ports. Connect cables according to the rated power
output and configuration parameter information in the
instruction.
3. If there are multiple slots, use the symbol near the slot