Huawei UPS5000-E-600K-SC User manual

UPS5000-E-(600 kVA-800 kVA)
User Manual
Issue
02
Date
2016-01-20
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd.
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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

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User Manual
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About This Document
Purpose
This document describes the UPS5000-E-(600 kVA-800 kVA) in terms of its features,
performance, working principles, appearance as well as instructions for installation, and
operation and maintenance (O&M).
Intended Audience
This document is intended for:
Sales engineers
Technical support engineers
System engineers
Hardware installation engineers
Commissioning engineers
Data configuration engineers
Maintenance engineers
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 death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
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.

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iii
Symbol
Description
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, and environment
deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Issue 02 (2016-01-20)
Updated the maximum voltage and current which the monitoring interface card can support,
optimized the dual bus scenario, and updated the routine maintenance.
Issue 01 (2015-06-25)
This is the first release.

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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
1.1 General Safety ..............................................................................................................................................................1
1.2 Electrical Safety............................................................................................................................................................3
1.3 Operating Environment.................................................................................................................................................6
1.4 Battery Safety ...............................................................................................................................................................7
1.5 Mechanical Safety ........................................................................................................................................................9
1.6 Laying Out Cables......................................................................................................................................................10
2 Overview.......................................................................................................................................11
2.1 Model Description...................................................................................................................................................... 11
2.2 Working Principle....................................................................................................................................................... 11
2.2.1 Conceptual Diagram ................................................................................................................................................11
2.2.2 Working Modes........................................................................................................................................................12
2.2.2.1 Normal Mode........................................................................................................................................................12
2.2.2.2 Bypass Mode ........................................................................................................................................................13
2.2.2.3 Battery Mode........................................................................................................................................................14
2.2.2.4 Maintenance Bypass Mode...................................................................................................................................15
2.2.2.5 ECO Mode............................................................................................................................................................16
2.3 Overview ....................................................................................................................................................................17
2.3.1 Appearance ..............................................................................................................................................................17
2.3.2 Product Structure .....................................................................................................................................................19
2.4 Control Module...........................................................................................................................................................23
2.4.1 Overview .................................................................................................................................................................23
2.4.2 ECM.........................................................................................................................................................................23
2.4.3 Dry Contact Card.....................................................................................................................................................24
2.4.4 (Optional) Backfeed Protection Card.......................................................................................................................26
2.4.5 (Optional) Dry Contact Extended Card ...................................................................................................................26
2.4.6 Monitoring Interface Card .......................................................................................................................................26
2.5 Typical Configurations................................................................................................................................................28
2.5.1 Single UPS...............................................................................................................................................................29
2.5.2 N+X Parallel System ...............................................................................................................................................29
2.5.3 Dual-Bus System .....................................................................................................................................................30

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2.6 Optional Components .................................................................................................................................................31
3 Installation....................................................................................................................................33
3.1 Installation Preparations .............................................................................................................................................33
3.1.1 Site...........................................................................................................................................................................33
3.1.1.1 UPS Weight and Size............................................................................................................................................33
3.1.1.2 Installation Environment.......................................................................................................................................35
3.1.1.3 Installation Clearances..........................................................................................................................................35
3.1.2 Tools ........................................................................................................................................................................37
3.1.3 Power Cables ...........................................................................................................................................................39
3.1.4 Unpacking and Checking.........................................................................................................................................42
3.2 Single UPS Installation...............................................................................................................................................45
3.2.1 Installing the UPS....................................................................................................................................................46
3.2.1.1 Installing the UPS on the Ground.........................................................................................................................46
3.2.1.2 Installing the UPS on Channel Steels ...................................................................................................................67
3.2.2 Installing Batteries...................................................................................................................................................69
3.2.3 Routing Cables.........................................................................................................................................................70
3.2.3.1 Top Cable Routing................................................................................................................................................70
3.2.3.2 Bottom Cable Routing ..........................................................................................................................................77
3.2.4 Connecting Ground Cables......................................................................................................................................83
3.2.5 Connecting AC Input Power Cables ........................................................................................................................86
3.2.5.1 Single Mains.........................................................................................................................................................86
3.2.5.2 Dual Mains............................................................................................................................................................88
3.2.6 Connecting AC Output Power Cables......................................................................................................................94
3.2.7 Connecting Battery Cables ......................................................................................................................................96
3.2.8 Remote EPO ............................................................................................................................................................99
3.2.9 Connecting Communications Cables.....................................................................................................................100
3.3 Parallel System Installation ......................................................................................................................................102
3.3.1 Connecting Power Cables......................................................................................................................................102
3.3.2 Connecting Signal Cables......................................................................................................................................107
3.4 Installing Optional Components ...............................................................................................................................109
3.4.1 Installing Antiseismic Kits.....................................................................................................................................109
3.4.2 Installing an IP21 Component ............................................................................................................................... 114
3.4.3 Installing an Ambient Temperature and Humidity Sensor..................................................................................... 116
3.4.4 Installing a BMU ................................................................................................................................................... 116
3.4.5 Installing a Battery Grounding Failure Detector.................................................................................................... 117
3.5 Installation Verification.............................................................................................................................................119
4 User Interface.............................................................................................................................122
4.1 LCD Interface...........................................................................................................................................................122
4.1.1 LCD.......................................................................................................................................................................122
4.1.2 LCD Menu.............................................................................................................................................................123
4.1.2.1 Menu Hierarchy..................................................................................................................................................123

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4.1.2.2 Initial Startup ......................................................................................................................................................124
4.1.2.3 Main Menu..........................................................................................................................................................125
4.1.3 System Info Screen................................................................................................................................................127
4.1.3.1 Cabinet Data Screen............................................................................................................................................127
4.1.3.2 Runn Info Screen ................................................................................................................................................128
4.1.3.3 Alarms Screen.....................................................................................................................................................134
4.1.3.4 Settings Screen....................................................................................................................................................136
4.1.3.5 Maintenance Screen............................................................................................................................................158
4.1.3.6 About Screen.......................................................................................................................................................163
4.1.4 System Status Screen.............................................................................................................................................164
4.1.5 Common Functions Screen....................................................................................................................................164
4.2 WebUI.......................................................................................................................................................................165
4.2.1 Login......................................................................................................................................................................165
4.2.2 Monitoring Page ....................................................................................................................................................167
4.2.2.1 Active Alarms Page.............................................................................................................................................168
4.2.2.2 Real-time Data Page ...........................................................................................................................................169
4.2.2.3 Param. Settings Page...........................................................................................................................................169
4.2.2.4 Comm. Config. Page...........................................................................................................................................170
4.2.2.5 Control Page .......................................................................................................................................................170
4.2.3 Query Page ............................................................................................................................................................171
4.2.3.1 Historical Alarms Page .......................................................................................................................................171
4.2.3.2 Logs Page ...........................................................................................................................................................172
4.2.4 Config. Page ..........................................................................................................................................................172
4.2.5 Maint. Page............................................................................................................................................................175
5 Operations ..................................................................................................................................178
5.1 Single UPS Operations .............................................................................................................................................178
5.1.1 Powering On and Starting the UPS........................................................................................................................178
5.1.2 Shutting Down and Powering Off the UPS ...........................................................................................................189
5.1.3 Starting the UPS in Battery Mode .........................................................................................................................192
5.1.4 Transferring to Bypass Mode.................................................................................................................................194
5.1.5 Setting ECO Mode.................................................................................................................................................195
5.1.6 Testing Batteries ....................................................................................................................................................197
5.1.6.1 Forced Equalized Charge Test ............................................................................................................................197
5.1.6.2 Shallow Discharge Test.......................................................................................................................................198
5.1.6.3 Capacity Test.......................................................................................................................................................199
5.1.6.4 Test Data Download............................................................................................................................................201
5.1.7 Transferring to Maintenance Bypass Mode ...........................................................................................................203
5.1.8 Transferring from Maintenance Bypass Mode to Normal Mode ...........................................................................205
5.1.9 Performing EPO.....................................................................................................................................................206
5.1.10 Clearing the EPO State ........................................................................................................................................207
5.2 Setting Hibernation Mode.........................................................................................................................................210

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5.2.1 LCD....................................................................................................................................................................... 211
5.2.2 WebUI....................................................................................................................................................................212
5.3 Setting Intelligent Power Mode ................................................................................................................................213
5.3.1 LCD.......................................................................................................................................................................213
5.3.2 WebUI....................................................................................................................................................................218
5.3.3 Reused Scenario.....................................................................................................................................................221
5.3.4 ATS Scenario .........................................................................................................................................................222
5.4 Parallel System Operations.......................................................................................................................................224
6 Routine Maintenance ...............................................................................................................225
6.1 UPS Maintenance .....................................................................................................................................................225
6.2 Battery Maintenance.................................................................................................................................................227
7 Troubleshooting........................................................................................................................231
8 Technical Specifications ..........................................................................................................233
8.1 Physical Specifications .............................................................................................................................................233
8.2 Environmental Specifications...................................................................................................................................233
8.3 Safety Regulations and EMC....................................................................................................................................234
8.4 Mains Input Electrical Specifications .......................................................................................................................234
8.5 Bypass Input Electrical Specifications......................................................................................................................235
8.6 Battery Specifications...............................................................................................................................................235
8.7 Output Electrical Specifications ...............................................................................................................................235
8.8 System Electrical Specifications...............................................................................................................................236
A Menu Hierarchy .......................................................................................................................237
A.1 Menus on the LCD...................................................................................................................................................237
A.2 Menus on the WebUI ...............................................................................................................................................239
B Alarm List...................................................................................................................................255
C Acronyms and Abbreviations................................................................................................268

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1 Safety Precautions
1.1 General Safety
This section describes the safety precautions that you must take before installing, maintaining,
and operating the UPS.
To minimize the risk of personal injury and damage to equipment, read and follow all the
precautions in this document before performing any operation. The "DANGER",
"WARNING", "CAUTION", and "NOTICE" statements in this document do not represent all
the safety instructions. They are only supplements to the safety instructions. Only trained and
qualified personnel are allowed to install, operate, and maintain Huawei equipment, and they
must understand basic safety precautions to avoid hazards.
Follow the precautions and special safety instructions provided by Huawei when operating
Huawei products. Huawei will not be liable for any consequences that are caused by the
violation of the general safety regulations and equipment design, production, and usage safety
standards.
Declaration
Huawei does not take responsibilities for the following situations:
Operation under severe environments which are not specified in this document.
Installation or use in environments which are not specified in related international
standards.
Unauthorized product changes and software code modification.
Operations not complying with the operation instructions and safety precautions in this
document.
Damage caused by abnormal natural environments.
Damage caused by using batteries provided by Huawei for non-Huawei UPSs.
Damage caused by using batteries not provided by Huawei.

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Power Grid Requirements
A standard UPS can connect to a three-phase, five-wire (L1, L2, L3, N, PE) TT, TN-C, TN-S,
and TN-C-S AC power distribution system (IEC60364-1).
Local Laws and Regulations
When operating the equipment, you must comply with local laws and regulations. The safety
instructions in this document are only supplements to local safety regulations.
Personal Requirements
Only engineers certified by the manufacturer or its agents are allowed to perform UPS
commissioning and maintenance. Otherwise, human injury or equipment damage may occur,
and the resulting UPS faults are beyond warranty scope.
Personnel who plan to install or maintain Huawei equipment must receive a thorough training,
understand all necessary safety precautions, and master the correct operation methods.
Only trained and qualified personnel are allowed to install, operate, and maintain the
equipment.
Only trained and qualified personnel are allowed to remove safety facilities and inspect
the equipment.
Only personnel certified or authorized by Huawei are allowed to replace or change the
devices or components (including software).
Operation personnel must report faults or errors that might cause serious safety issues to
related owners.
This product should be installed and used by following the specification requirements
(see the chapters related to installation and technical specifications) specified in this
manual. Otherwise, the product may be damaged, and the resulting product exceptions or
component damage are beyond the warranty scope.
Grounding Requirements
Devices to be grounded (excluding the energy storage unit) must meet the following
requirements:
When installing a device, install the ground cable first. When removing a device, remove
the ground cable at the very end.
Do not damage the ground conductor.
Do not operate devices if the ground conductor is not installed.
The devices must be grounded permanently. Before operating a device, check the
electrical connection of the device to ensure that it is securely grounded.
Personal Safety
Do not operate the product or handle cables during thunderstorms.

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To avoid electric shocks, do not connect safety extra-low voltage (SELV) circuits to
telecommunication network voltage (TNV) circuits.
Before operating a device, wear electrostatic discharge (ESD) clothes, ESD gloves, and
an ESD wrist strap. Remove any conductors such as jewelry or watches before the
operation to avoid electric shocks or burns.
In the case of fire, leave the building or the equipment room immediately, and turn on the
fire alarm bell or make an emergency call. Never enter the building on fire in any case.
If the cabinet provides an ESD jack, wear an ESD wrist strap and insert the ground
terminal of the ESD wrist strap into the jack.
Keep all switches OFF during device installation.
Power on the UPS only after authorized engineers arrive at the site.
If you use a C2 UPS in residential areas, take installation restriction or additional
measures to prevent radio frequency interferences.
If you use the UPS for life-supporting medical apparatus and facilities such as lifts where
adequate care has to be taken to ensure personal safety, discuss with the manufacturer in
advance about the applicability, settings, management, and maintenance of the UPS,
which require special considerations during design.
Device Safety
Before operation, ensure that the device is firmly anchored to the floor or other solid
objects, such as a wall or an installation rack.
Do not block ventilation vents while the system is operating.
Before powering on the device, ensure that all the screws inside it are securely tightened
and will not fall off during operation.
After the installation, remove packing materials from the equipment area.
Replace warning labels that have worn out.
A UPS can be used to serve resistive-capacitive loads, resistive loads, and
micro-inductive loads. It is recommended that a UPS not be used for pure capacitive
loads, pure inductive loads, and half-wave rectification loads. It does not apply to energy
feedback loads.
Without prior consent from the manufacturer, do not alter the UPS internal structure or
installation procedure.
Never use water to clean electrical components inside or outside the UPS.
1.2 Electrical Safety
High Voltage

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The high voltage power supply provides power for the device operation. Direct or indirect
contact (through damp objects) with the high voltage power sources may result in fatal
injury.
Non-standard and incorrect high voltage operations may result in fire and electric shocks.
The personnel who install the AC facility must be qualified to perform high voltage and
AC operations.
When selecting, connecting, and routing power cables, follow local laws and regulations.
When installing the AC power supply facility, follow local laws and regulations.
Before connecting cables to the UPS, ensure that the input power and mains power
distribution switches and output power distribution switch are turned off.
Use dedicated tools during high voltage and AC operations. Do not use ordinary tools.
When the operation is performed in a damp environment, ensure that the device is dry.
When water is found in the rack or the rack is damp, switch off the power supply
immediately.
High Leakage Current
Ground a device before powering it on. Otherwise, personal injury or device damage may
occur.
If a "high leakage current" tag is attached to the panel of the device, you must ground the
protective ground terminal on the device enclosure before connecting the AC power supply,
thereby preventing electric shocks.
The UPS can generate high leakage currents. A circuit breaker that has the leakage current
protection function is not recommended.
Power Cable
Do not install or remove power cables when the device is on. Transient contact between the
core of the power cable and the conductor may generate electric arcs or sparks, which may
cause fire or hurt human eyes.
Before moving or reconnecting the UPS, disconnect the mains and batteries, turn off the
output power distribution switch, and wait more than 5 minutes after the UPS completely
powers off. Otherwise, electric shocks may occur.
Before installing or removing the power cable, turn off the power switch.
Before connecting a power cable, check that its label is correct.

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Fuse
To ensure that the system runs safely, if a fuse is to be replaced, the new fuse must be of the
same type and specifications.
Backfeed Protection Dry Contact
The UPS can be configured with a backfeed protection dry contact to work with an external
automatic circuit breaker, preventing the voltage from flowing back to input terminals over
static bypass circuits. If the device installation and maintenance personnel do not need to use
backfeed protection, paste labels on the external bypass input circuit breakers, informing that
the circuit is connected to the UPS. Disconnect the device from the UPS before performing
operations on the circuit.
Electrostatic Discharge
The static electricity generated by human bodies may damage the electrostatic-sensitive
components on boards, for example, the large-scale integrated (LSI) circuits.
Human body movement, friction between human bodies and clothes, friction between
shoes and floors, or handling of plastic articles causes static electromagnetic fields on
human bodies. These static electromagnetic fields cannot be eliminated until the static is
discharged.
To prevent electrostatic-sensitive components from being damaged by the static on
human bodies, you must wear a pair of ESD gloves or a well-grounded ESD wrist strap
when touching the device or handling boards or application-specific integrated circuits
(ASICs).
Figure 1-1 shows how to wear an ESD wrist strap.

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Figure 1-1 Wearing an ESD wrist strap
1.3 Operating Environment
Do not expose the equipment to flammable or explosive gas or smoke. Never perform any
operation in such an environment.
Any operation on any electrical device in an environment that has flammable air can cause
extreme danger. Strictly obey the operating environmental requirements specified in related
use manuals when using or storing the device.
Keep the UPS away from the following environments:
Places where the temperature and humidity are beyond the range of 0–40°C and
0%–95% RH respectively.
Places in direct sunlight or near heat sources.
Places subject to vibrations or shocks.
Dusty places, or places exposed to corrosive substances or salts.
Marine environments or outdoor land environments (with simple shielding measures)
near pollution sources. If a site is near a pollution source, it is at most:
−3.7 km away from saline water areas such as the ocean and salinas.
−3 km away from serious pollution sources, such as metallurgic plants, coal mines,
and thermal power plants.
−2 km away from secondary pollution sources, such as chemical, rubber, and
galvanization industries.
−1 km away from light pollution sources, such as packing houses, tanneries, and
boiler rooms.

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1.4 Battery Safety
This section describes precautions for operating batteries.
Before operating batteries, carefully read the safety precautions for battery handling and
connection.
To ensure battery safety and efficient battery management, use the batteries delivered with
the UPS. Huawei shall not be responsible for battery damage caused by using non-Huawei
batteries for Huawei UPSs.
Handle lead-acid batteries according to local regulations.
Incorrect handling of batteries causes hazards. When operating batteries, avoid battery
short circuits and electrolyte overflow or leakage.
Electrolyte overflow may damage the device. It will corrode metal parts and circuit
boards, and ultimately damage the circuit boards.
Short circuits caused by incorrect operations may cause serious injuries due to high
power of batteries.
Do not reversely connect positive and negative battery terminals.
Use batteries of the specified type. Otherwise, the batteries may be damaged.
Check battery connections periodically to ensure that all screws are securely tightened.
Install or store batteries in clean, cool, and dry environments.
Do not decompose, transform, or damage batteries. Otherwise, battery short circuit,
electrolyte leakage, and even personal injury may occur.
Technical Specifications
Table 1-1 Battery specifications
Battery Type
Minimum/Ma
ximum
Number of
Batteries
Cell Float
Voltage
Cell
Equalized
Voltage
Cell
Minimum
Voltage
Sealing
lead-acid
battery
Thirty to
forty-six 12 V
batteries
2.23–2.27
V/cell
2.3–2.4 V/cell
1.6–1.9 V/cell
Open lead-acid
battery
Thirty to
forty-six 12 V
batteries
2.23–2.27
V/cell
2.3–2.4 V/cell
1.6–1.9 V/cell

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A cell indicates a 2 V cell, each 12 V battery consists of six cells.
Preventative Measures
When installing and maintaining batteries, pay attention to the following points:
Use dedicated insulated tools.
Take measures to protect your eyes, such as using eye protection devices.
Avoid skin contact with electrolyte overflow. Wear rubber gloves and protective
clothing.
When handling a battery, ensure that its electrodes always point upward. Do not tilt or
overturn batteries.
Switch off the power supply during installation and maintenance.
Short Circuit
Battery short circuits may cause personal injury. The high transient current generated by a
short circuit may release a surge of power and cause a fire.
To avoid battery short circuits, do not maintain batteries in use.
Harmful Gas
Do not use unsealed lead-acid batteries. Lead-acid batteries emit flammable gas. Therefore,
place and secure lead-acid batteries horizontally to prevent fire or corrosion.
Store lead-acid batteries in a place with good ventilation, and take fire safety precautions.
Battery Temperature
High temperature may result in battery distortion, damage, and electrolyte overflow.
Install or store batteries far away from fire sources and heating devices such as
transformers. Never burn batteries.

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When the battery temperature exceeds 60°C, check the battery for electrolyte overflow.
If electrolyte overflows, handle the leakage immediately.
Electrolyte Leakage
In the case of electrolyte leakage, counteract and absorb the leaking electrolyte immediately.
When moving or handling a battery whose electrolyte leaks, note that the leaking electrolyte
may hurt human bodies. When you find the electrolyte leaks, use the following substances to
counteract and absorb the leaking electrolyte:
Sodium bicarbonate (baking soda): NaHCO3
Sodium carbonate (soda): Na2CO3
When using substances to counteract and absorb electrolytes, strictly follow the guidelines
provided by the battery manufacturer.
If your body comes in contact with battery electrolyte, wash with clean water immediately
and seek medical advice if the situation is serious.
1.5 Mechanical Safety
Moving Sharp Objects
Wear protective gloves when moving sharp objects.
Moving Heavy Objects
Perform operations by strictly following the symbols of instructions on the device.
Be cautious to avoid injury when moving heavy objects.
When moving or lifting a device, hold the handle or bottom of the device.
Handling Fans
Do not insert your fingers or boards into the operating fans until the fans are switched off and
stop running.

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1.6 Laying Out Cables
Binding Signal Cables
Signal cables must be bound separately from strong-current cables and high-voltage cables.
Laying Out Cables
When the temperature is low, violent strike or vibration may damage the 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 (32°F).
Before laying out cables that have been stored in a temperature lower than 0°C (32°F),
move the cables to an environment of the ambient temperature and store them at the
ambient temperature for at least 24 hours.
Handle cables with caution, especially at a low temperature. Do not drop the cables
directly from the vehicle.
As the insulation layer of a cable may age or be damaged at high temperatures, ensure a
sufficient distance between cables and the DC busbars, shunts, and fuses. Cables
prepared by the customer should be flame resistant. Cables must not be routed behind the
air exhaust vent of the cabinet. The air exhaust vent should not be blocked by any
foreign matter.
Before connecting a cable, ensure that the cable and cable label to be used meet the actual
installation requirements.

UPS5000-E-(600 kVA-800 kVA)
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2 Overview
2.1 Model Description
This document describes the following UPS models:
UPS5000-E-600K-SC
UPS5000-E-600K-FC
UPS5000-E-800K-SC
UPS5000-E-800K-FC
Figure 2-1 shows a UPS model number.
Figure 2-1 UPS model number
The UPS5000-E-600K-SC/FC uses 40 kVA power modules. It can expand up to 600 kVA and is
compatible downwards to 40 kVA. This document describes the 600 kVA UPS.
The UPS5000-E-800K-SC/FC uses 40 kVA power modules. It can expand up to 800 kVA and is
compatible downwards to 40 kVA. This document describes the 800 kVA UPS.
2.2 Working Principle
2.2.1 Conceptual Diagram
The UPS5000-E is an online UPS with a modular design that facilitates maintenance and
capacity expansion. All the modules are under digital signal processing (DSP) intelligent
control.A power module consists of a rectifier and an inverter. The power module converts

UPS5000-E-(600 kVA-800 kVA)
User Manual
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Issue 02 (2016-01-20)
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Copyright © Huawei Technologies Co., Ltd.
12
inputs into pure, high-quality sine wave outputs by using high-frequency switching. Figure
2-2 shows the UPS conceptual diagram.
Figure 2-2 UPS conceptual diagram
2.2.2 Working Modes
indicates an input mode.
indicates the energy flow direction.
2.2.2.1 Normal Mode
In normal mode, the rectifier convertsAC power into DC power. Then the inverter converts
DC power into high-precision AC outputs. The conversions protect loads from interference
such as input harmonics, glitches, and voltage transients. Figure 2-3 shows the conceptual
diagram of the UPS working in normal mode.