Huawei PDU8000 Series User manual

PDU8000 DC Combiner Cabinet
User Manual
Issue 02
Date 2022-08-10
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Copyright © Huawei Digital Power Technologies Co., Ltd. 2022. 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 Digital Power Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are the property 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
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
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 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 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. i

About This Document
Purpose
This document describes the PDU8000 DC combiner cabinet in terms of its
overview, installation, routine maintenance, troubleshooting, and parts
replacement, helping users understand how to use and maintain the DC combiner
cabinet.
Figures provided in this document are for reference only.
Intended Audience
This document is intended for:
● Technical support engineers
● Hardware installation engineers
● Commissioning engineers
● Maintenance engineers
Symbol Conventions
The symbols that may be found in this document 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.
PDU8000 DC Combiner Cabinet
User Manual About This Document
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. ii

Symbol Description
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.
Change History
Issue Date Description
02 2022-08-10 ● Updated tool images.
● Updated the description in
section "Input PDU."
● Updated the description in
section "Quarterly
Maintenance."
01 2022-05-20 This issue is the rst ocial
release.
PDU8000 DC Combiner Cabinet
User Manual About This Document
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. iii

Contents
About This Document................................................................................................................ ii
1 Safety Information.................................................................................................................. 1
1.1 General Safety.......................................................................................................................................................................... 1
1.2 Personnel Requirements....................................................................................................................................................... 4
1.3 Electrical Safety........................................................................................................................................................................4
1.4 Installation Environment Requirements.......................................................................................................................... 6
1.5 Mechanical Safety................................................................................................................................................................... 8
2 Product Description.............................................................................................................. 11
2.1 Application Scenario............................................................................................................................................................ 11
2.2 Model Number Description............................................................................................................................................... 11
2.3 Components............................................................................................................................................................................ 13
2.4 Input PDU................................................................................................................................................................................ 14
2.5 Output PDU............................................................................................................................................................................ 15
3 Technical Specications....................................................................................................... 16
4 Installation..............................................................................................................................18
4.1 Installation Requirements.................................................................................................................................................. 18
4.2 Installation Preparations.................................................................................................................................................... 19
4.2.1 Tools....................................................................................................................................................................................... 19
4.2.2 Cables.................................................................................................................................................................................... 23
4.3 Unpacking and Checking................................................................................................................................................... 24
4.4 Moving the Combiner Cabinet......................................................................................................................................... 24
4.5 Installing the Combiner Cabinet...................................................................................................................................... 26
4.5.1 Installing the Combiner Cabinet (Concrete Floor).................................................................................................27
4.5.2 Installing the Combiner Cabinet (ESD Floor).......................................................................................................... 30
4.6 Installing Cables.................................................................................................................................................................... 33
4.6.1 Cable Routing Rules......................................................................................................................................................... 33
4.6.2 Determining Cable Routes............................................................................................................................................. 36
4.6.3 Removing Rodent-proof Meshes and Protective Panels at the Top.................................................................36
4.6.4 Installing an Equipotential Cable for the Cabinet..................................................................................................37
4.6.5 Installing Input Power Cables....................................................................................................................................... 37
4.6.6 Installing Output Power Cables....................................................................................................................................38
4.6.7 (Optional) Installing Signal Cables............................................................................................................................. 39
PDU8000 DC Combiner Cabinet
User Manual Contents
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. iv

4.6.8 Installing Rodent-proof Meshes and Protective Panels at the Top.................................................................. 40
4.6.9 Preparing Cable Terminals............................................................................................................................................. 41
4.7 Verifying the Installation.................................................................................................................................................... 42
5 Power-On Commissioning................................................................................................... 44
6 Routine Maintenance........................................................................................................... 47
6.1 Monthly Maintenance......................................................................................................................................................... 47
6.2 Quarterly Maintenance....................................................................................................................................................... 48
6.3 Yearly Maintenance.............................................................................................................................................................. 49
7 Troubleshooting.....................................................................................................................50
8 Component Replacement.................................................................................................... 52
8.1 Component Locations..........................................................................................................................................................53
8.2 Replacing an SPD.................................................................................................................................................................. 54
8.3 Replacing a Power Indicator............................................................................................................................................. 55
8.4 Replacing an SPD or PSU Fuse.........................................................................................................................................56
8.5 Replacing an Output Branch Fuse.................................................................................................................................. 57
8.6 Replacing a Leakage Current Sensor............................................................................................................................. 58
8.7 Replacing an Insulation Monitoring Instrument........................................................................................................ 60
8.8 Replacing PSU 1 for the Insulation Monitoring Instrument.................................................................................. 61
8.9 Replacing PSU 2 for the Insulation Monitoring Instrument.................................................................................. 63
A Electrical Diagram................................................................................................................ 65
PDU8000 DC Combiner Cabinet
User Manual Contents
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. v

1 Safety Information
1.1 General Safety
Statement
Before installing, operating, and maintaining the equipment, carefully read this
document and observe all safety instructions provided herein and written on the
equipment itself.
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. The Company 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
specications. Otherwise, the equipment may become faulty, and the resulting
equipment malfunction, component damage, personal injuries, or property
damage will not be 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.
The Company will not be liable for any consequences of the following
circumstances:
● Operation beyond the conditions specied in this document
● Installation or use in environments which are not specied in relevant
international or national standards
● Unauthorized modications 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, re, and
storms
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 1

● Damage caused during transportation by the customer
● Storage conditions that do not meet the requirements specied in this
document
General Requirements
● 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 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.
● 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 gure.
● Follow the specied procedures for installation, operation, and maintenance.
● Before handling a conductor surface or terminal, measure the contact point
voltage and ensure that there is no risk of electric shock.
● 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 re, immediately leave the building or the equipment area
and activate the re alarm or call emergency services. Do not re-enter the
building or aected area until it has been deemed safe by qualied
professionals.
● 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.
● Use insulated tools or tools with insulated handles, as shown in the following
gure.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 2

● All cable holes should be sealed. Seal the used cable holes with restop putty.
Seal the unused cable holes with the caps delivered with the cabinet. The
following gure shows the criteria for correct sealing with restop putty.
● Do not scrawl, damage, or block any warning label on the equipment.
● When installing the equipment, use a torque wrench with a proper range to
tighten the screws. When using a wrench to tighten the screws, ensure that
the wrench does not tilt and the torque error does not exceed 10% of the
specied value.
● Do not work with power on during installation.
● Repaint any paint scratches caused during equipment transportation or
installation in a timely manner. Equipment with scratches cannot be exposed
to an outdoor environment for an extended period of time.
● Before operations, ensure that the equipment is rmly secured to the oor or
other solid objects, such as a wall or an installation rack.
● Do not use water to clean electrical components inside or outside of a
cabinet.
● Do not change the structure or installation sequence of equipment without
permission.
● Do not touch a running fan with your ngers, components, screws, tools, or
boards before the fan is powered o or stops running.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 3

Personal Safety
● If there is a likelihood of personal injury or equipment damage during
operations, immediately stop, 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 conrmed by
professionals.
1.2 Personnel Requirements
● Personnel who plan to install or maintain the equipment must receive
thorough training, understand all necessary safety precautions, and be able to
correctly perform all operations.
● Only qualied professionals or trained personnel are allowed to install,
operate, and maintain the equipment.
● Only qualied professionals are allowed to remove safety facilities and inspect
the equipment.
● Personnel who will operate the equipment, including operators, trained
personnel, and professionals, should possess the local national required
qualications in special operations such as high-voltage operations, working
at heights, and operations of special equipment.
● Professionals: personnel who are trained or experienced in equipment
operations and are clear of the sources and degree of various potential
hazards in equipment installation, operation, maintenance
● Trained personnel: personnel who are technically trained, have required
experience, are aware of possible hazards on themselves in certain operations,
and are able to take protective measures to minimize the hazards on
themselves and other people
● Operators: operation personnel who may come in contact with the
equipment, except trained personnel and professionals
● Only professionals or authorized personnel are allowed to replace the
equipment or components (including software).
1.3 Electrical Safety
Grounding
● For the equipment that needs to be grounded, install the ground cable rst
when installing the equipment and remove the ground cable last when
removing the equipment.
● Do not damage the ground conductor.
● Do not operate the equipment in the absence of a properly installed ground
conductor.
● Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is securely grounded.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 4

General Requirements
Use dedicated insulated tools when performing high-voltage operations.
AC and DC Power
D ANGER
Do not connect or disconnect power cables with power on. Transient contact
between the core of the power cable and the conductor will generate electric arcs
or sparks, which may cause re or personal injury.
● If a "high electricity leakage" tag is attached on the equipment, ground the
protective ground terminal on the equipment enclosure before connecting the
AC power supply; otherwise, electric shock as a result of electricity leakage
may occur.
● Before installing or removing a power cable, turn o the power switch.
● Before connecting a power cable, check that the label on the power cable is
correct.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
● A circuit breaker equipped with a residual current device (RCD) is not
recommended.
● A damaged power cable must be replaced by the manufacturer, service agent,
or professionals to avoid risks.
● High voltage operations and installation of AC-powered facilities must be
performed by qualied personnel.
Cabling
● When routing cables, ensure that a distance of at least 30 mm exists between
the cables and heat-generating components or areas. This prevents damage
to the insulation layer of the cables.
● Do not route cables behind the air intake and exhaust vents of the
equipment.
● Ensure that cables meet the VW-1 or ZB ame spread rating requirements or
higher.
● Bind cables of the same type together. When routing cables of dierent types,
ensure that they are at least 30 mm away from each other.
● If an AC input power cable is connected to the cabinet from the top, bend the
cable in a U shape outside the cabinet and then route it into the cabinet.
● When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
– Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
– Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 5

● Do not perform any improper operations, for example, dropping cables
directly from a vehicle.
● When selecting, connecting, and routing cables, follow local safety regulations
and rules.
ESD
NO TICE
The static electricity generated by human bodies may damage the electrostatic-
sensitive components on boards, for example, the large-scale integrated (LSI)
circuits.
● Wear ESD gloves or a well-grounded ESD wrist strap when touching the
device or handling boards or application-specic integrated circuits (ASICs).
● When holding a board, hold its edge without touching any components. Do
not touch the components with your bare hands.
● Package boards with ESD packaging materials before storing or transporting
them.
Figure 1-1 Wearing an ESD wrist strap
Neutral-Ground Voltage
It is recommended that the three-phase loads be equalized and the neutral-
ground voltage be kept at less than 2 V to meet power distribution requirements.
1.4 Installation Environment Requirements
● To prevent re due to high temperature, ensure that the ventilation vents or
heat dissipation system are not blocked when the equipment is running.
● Install the equipment in an area far away from liquids. Do not install it under
areas prone to condensation, such as under water pipes and air exhaust vents,
or areas prone to water leakage, such as air conditioner vents, ventilation
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 6

vents, or feeder windows of the equipment room. Ensure that no liquid enters
the equipment to prevent faults or short circuits.
● If any liquid is detected inside the equipment, immediately disconnect the
power supply and contact the administrator.
● Do not expose the equipment to ammable or explosive gas or smoke. Do
not perform any operation on the equipment in such environments.
● Ensure that the equipment room provides good heat insulation, and the walls
and oor are dampproof.
● Install a rat guard at the door of the equipment room.
Installation at Heights
● Working at heights refers to operations that are performed at least 2 meters
above the ground.
● Do not work at heights if the steel pipes are wet or other potential danger
exists. After the preceding conditions no longer exist, the safety director and
relevant technical personnel need to check the involved equipment. Operators
can begin working only after obtaining consent.
● When working at heights, comply with local relevant laws and regulations.
● Only trained and qualied personnel are allowed to work at heights.
● Before working at heights, check the climbing tools and safety gears such as
safety helmets, safety belts, ladders, springboards, scaolding, and lifting
equipment. If they do not meet the requirements, take corrective measures or
disallow working at heights.
● Wear personal protective equipment such as the safety helmet and safety belt
or waist rope and fasten it to a solid structure. Do not mount it on an
insecure moveable object or metal object with sharp edges. Make sure that
the hooks will not slide o.
● Set a restricted area and eye-catching signs for working at heights to warn
away irrelevant personnel.
● Carry the operation machinery and tools properly to prevent them from
falling o and causing injuries.
● Personnel involving working at heights are not allowed to throw objects from
the height to the ground, or vice versa. Objects should be transported by
tough slings, hanging baskets, highline trolleys, or cranes.
● Ensure that guard rails and warning signs are set at the edges and openings
of the area involving working at heights to prevent falls.
● Do not pile up scaolding, springboards, or other sundries on the ground
under the area involving working at heights. Do not allow people to stay or
pass under the area involving working at heights.
● Inspect the scaolding, springboards, and workbenches used for working at
heights in advance to ensure that their structures are solid and not
overloaded.
● Any violations must be promptly pointed out by the site manager or safety
supervisor and the involved personnel should be prompted for correction.
Personnel who fail to stop violations will be forbidden from working.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 7

1.5 Mechanical Safety
Hoisting
● Do not walk under hoisted objects.
● Only trained and qualied personnel should perform hoisting operations.
● Check that hoisting tools are available and in good condition.
● Before hoisting objects, ensure that hoisting tools are rmly secured onto a
load-bearing object or wall.
● Ensure that the angle formed by two hoisting cables is no more than 90
degrees, as shown in the following gure.
● Do not drag steel ropes and hoisting tools or bump hoisted objects against
hard objects during hoisting.
Using Ladders
● Use wooden or berglass ladders when you need to perform live working at
heights.
● When a step ladder is used, ensure that the pull ropes are secured and the
ladder is held rm.
● Before using a ladder, check that it is intact and conrm its load bearing
capacity. Do not overload it.
● Ensure that the ladder is securely positioned. The recommended angle for a
ladder against the oor is 75 degrees, as shown in the following gure. An
angle ruler can be used to measure the angle. Ensure that the wider end of
the ladder is at the bottom, or protective measures have been taken at the
bottom to prevent the ladder from sliding.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 8

● When climbing a ladder, take the following precautions to reduce risks and
ensure safety:
– Keep your body steady.
– Do not climb higher than the fourth rung of the ladder from the top.
– Ensure that your body's center of gravity does not shift outside the legs
of the ladder.
Drilling Holes
When drilling holes into a wall or oor, observe the following safety precautions:
NO TICE
Do not drill holes into the equipment. Doing so may aect the electromagnetic
shielding of the equipment and damage components or cables inside. Metal
shavings from drilling may short-circuit boards inside the equipment.
● Obtain consent from the customer and contractor before drilling holes.
● Wear goggles and protective gloves when drilling holes.
● When drilling holes, protect the equipment from shavings. After drilling, clean
up any shavings that have accumulated inside or outside the equipment.
Moving Heavy Objects
D ANGER
When pulling the equipment out of a cabinet, be aware of unstable or heavy
objects on the cabinet to prevent injury.
● Be cautious to avoid injury when moving heavy objects.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 9

● When moving the equipment by hand, wear protective gloves to prevent
injuries.
● Move or lift the equipment by holding its handles or lower edges. Do not hold
the handles of modules (such as power supply units, fans, and boards) that
are installed in the equipment because they cannot support the weight of the
equipment.
● Avoid scratching the cabinet surface or damaging cabinet components and
cables during equipment transportation.
● When transporting the equipment using a forklift truck, ensure that the forks
are properly positioned so that the equipment does not topple. Before moving
the equipment, secure it to the forklift truck using ropes. When moving the
equipment, assign dedicated personnel to take care of it.
● Choose a road with good conditions or sea for transportation to ensure
equipment safety. Avoid tilt or jolt during transportation.
● Move the cabinet with caution. Any bumping or falling may damage the
equipment.
PDU8000 DC Combiner Cabinet
User Manual 1 Safety Information
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 10

2 Product Description
2.1 Application Scenario
The upstream input for the PDU8000 DC combiner cabinet is a lithium battery
cabinet or lead-acid power control cabinet, and the downstream output is multiple
FusionCol8000-E modular indirect evaporative cooling systems (EHUs for short).
Based on a battery sharing design solution, the combiner cabinet uses the output
voltage of lithium battery cabinets or lead-acid battery power control cabinets as
backup power for EHUs, supporting continuous cooling of the EHUs.
Figure 2-1 Application scenario
2.2 Model Number Description
This document involves the following product model:
PDU8000-1250D9-BS310
PDU8000 DC Combiner Cabinet
User Manual 2 Product Description
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 11

Figure 2-2 Model number
No. Meaning Description
1 Data center power
distribution product
PDU8000: data center power
distribution product
2 Rated current 1250: The rated current is 1250 A.
3 Power supply D: direct current
4 Rated output voltage 9: The rated output voltage is 800
V.
5 Power distribution product
type
BS: battery switch cabinet
6 Serial number 310: The serial number is 310.
PDU8000 DC Combiner Cabinet
User Manual 2 Product Description
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 12

2.3 Components
Figure 2-3 Components
No. Name Description
1 Power
indicator
Indicates whether the system bus is energized.
2 Insulation
monitoring
indicator
Detects the bus insulation status. If the insulation status is
abnormal, the external alarm indicator turns on.
● RUN: system running indicator
● COM: communication indicator
● ALA: insulation abnormality indicator
3 SPD Surge protective device
4 Output
disconnect
or
Connects or disconnect a load branch.
PDU8000 DC Combiner Cabinet
User Manual 2 Product Description
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 13

No. Name Description
5 Output
power
distribution
unit (PDU)
The output PDU consists of eight identical output power
distribution circuits, which connect to loads.
● Each output power distribution circuit receives power
from the positive and negative copper bars and feeds
the power to output wiring terminals through a 4-pole
250 A output disconnector and 250 A fuse.
● The leakage current sensor connected in each output
power distribution circuit detects branch leakage current.
6 Input PDU Provides power input connectors.
7 Feeder
window
Position for routing input power cables into the cabinet and
routing load branch output cables out of the cabinet.
2.4 Input PDU
Figure 2-4 Input PDU
(1) Power supply unit (PSU) 2
for the insulation monitoring
instrument
(2) Insulation monitoring
instrument
(3) PSU 1 for the insulation
monitoring instrument
(4) SPD (5) SPD fuses FU9/FU10 (6) PSU fuses FU11/FU12
(7) PE bar (8) Negative input wiring
terminal BAT–
(9) Positive input wiring
terminal BAT+
NO TE
● (1) PSU 2 for the insulation monitoring instrument: converts 24 V DC to 220 V AC.
● (3) PSU 1 for the insulation monitoring instrument: converts 800 V DC to 24 V DC.
PDU8000 DC Combiner Cabinet
User Manual 2 Product Description
Issue 02 (2022-08-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 14