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This material shows the user about the Huawei TP48200A cabinet. it details about how to install and the general cabinet features.
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www.huawei.com
Security Level: INTERNAL
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
TP48200A V300R001C03Training Slide
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 2
Preface
This course describes TP48200A V300R001C03 (TP48200A for short) in terms of its working principles, system installation, routine maintenance, and troubleshooting.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page3
Reference Documentation
TP48200A V300R001C03 User Manual
TP48200A V300R001C03 Engineer Manual
TP48200A V300R001C03 Technical Proposal
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page4
Upon completion of this course, you should be able to:
Understand the features and working principles of the
TP48200A.
Understand the installation, commissioning, and routine
maintenance for the TP48200A.
Understand how to rectify common TP48200A faults.
Course Objectives
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 5
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
1.1 Development History of the Communication Power Supply
Fourth generation
full-digital and
high-efficiency
power supply
Third generation
switch mode power supply
First generation
linear power supply
Second generation
phase-controlled power supply
Efficiency: 50%–60%Key part: power triodeControl mode: analog control
Efficiency: < 80%Key part: silicon controlled thyristor (SCR)Control mode: analog control
Efficiency: < 92%Key parts: insulated gate bipolar transistor (IGBT) and metal-oxide semiconductor (MOS)Control mode: analog and half-digital control
Green powerIntelligent
power supply
Efficiency: > 96%Key parts: CoolMOS and digital signal processor (DSP)Control mode: full-digital and adaptive control
Before 1980
1980–1990
1990–2008
Since 2009
Page 6
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
1.2 Application Scenarios of the Communication Power Supply
Remote area/Pole-mount power supply
Enterprise Desktop power supply
Indoor power supply
Remote area/Outdoor power cabinet
Outdoor cabinet-type power supply
TP48200A
Residential blockResidential block
Residential block
Core network
Backbone network
Access network
Outdoor cabinet/Remo
te area
Twisted pair
Optical fiber
Wireless network
Indoor power supply
Indoor power supply
Outdoor cabinet
Category 5 cable
Wind power supply
Solar power supply
Outdoor cabinet-type power supply
Page 7
TP48200A
TP48200A
TP48200A
TP48200A
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page8
1.3 Working Principles of the Communication Power Supply
Rectifier unittwo to four rectifiers
Rectifier unittwo to four rectifiers
SMU02BSMU02B
Mains input -48 V
RS485 port
Batterystring
Batterystring
Standby AC output
TCP/IP Intellige
nt equipm
ent communication protocol
TCP/IP Intellige
nt equipm
ent communication protocol
Local monitoring on the console
MODEM
SwitchRemote monitoring
Dry contact
Signal control
Environment monitoring
ACpower
distribution
ACpower
distribution
DCpower
distribution
DCpower
distribution
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
1.3 Working Principles of the Communication Power Supply (Continued)Working principle of rectifiersRectifiers convert AC power into stable DC power, functioning as the heart of a system power supply.
Rectifiers provide the following functions:
Power conversion
Signal detection, such as voltage, current, and temperature signals
Protection against faults such as over-temperature, overvoltage, and short circuits
Communication and monitoring
AC/DC220 V AC –48 V
SMU
RS485 port
Page 9
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page10
1.3 Working Principles of the Communication Power Supply (Continued)
Topology of a rectifier
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Master/Slave
Local/Web
1.3 Working Principles of the Communication Power Supply (Continued)
Page11
Transmission
Application
Collection
Management
Working principle of site monitoring
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Explanation:
The SMU is connected to the busbar. The power is
supplied by the unit or the storage batteries.
The collection layer collects data of analog
parameters, Boolean value, and southbound
equipment.
The data is processed by the data processing layer
and is sent to the subordinate equipment.
The data processing layer processes data such as
alarms and logs collected by the collection layer.
The data display layer displays the processing
results to users over LUI, Web, or protocols.
1.3 Working Principles of the Communication Power Supply (Continued)
Page12
The SMU controls the operating status of the entire system, functioning as the brain of a system power supply.
Collection layer (CAN, RS485, main board)
Boolean value input
Boolean value output
Southbound equipment
Data processing layer
Analog input
Data display layer
LUI WEBProtoco
l
Northbound equipment
SMU
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
SMU
Environment monitoring
Battery management
Detection and control
Alarm processing
Power management
Communication management
G enerato r
1.3 Working Principles of the Communication Power Supply (Continued)
Page13
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
CAN busPlug and play
Intelligent hibernation
Power management
Page14
1.3 Working Principles of the Communication Power Supply (Continued)
Power management
RS485 port
Multi-level low voltage
disconnect (LVD)Shutdown
against over-temperature and alarm correlation
Voltage:Total loads:
Active alarmsHistorical
alarmsSystem logs
AC power distributionDC power distribution
Battery parameters
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page15
1.3 Working Principles of the Communication Power Supply (Continued)Intelligent battery management by the SMU
Battery voltage
Battery current
Normal float charging
Battery discharge caused by AC power
absence or other factors
LLVD BLVDConstant-current equalized charging after preliminary
current limiting
Constant-voltage equalized charging
RestorationTemperature compensation
Capacity test
Restoration after
preliminary current limiting
Brief Battery Management Graph
Voltage curveCurrent curve
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Alarm Medium
Alarm signal
Record
Severity
buzzerindicatorLCD/WEB
Reports alarms through
communication
Dry contactreporting
Mains absenceBusbar undervoltageCharge overcurrentBattery disconnectionLoad power-offBattery string loop brokenAmbient temperature alarm
Too high or low ambient humidity Water intrusion
Smoke generationDoor status alarmRectifier alarm Load fuse blown alarmSPD failure alarm200 active
alarms
1000 historical alarms
Type, date, and time
Level 4 alarm
Severity level can be set.
Critical alarm
Major alarms
1.3 Working Principles of the Communication Power Supply (Continued)Alarm management
Critical alarm
Minor alarms
Warning alarm
Page16
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
1.3 Working Principles of the Communication Power Supply (Continued)
FE/RS485/Dry contact
In-band Out-of-band Third-party Dry contact
NMS
Remote monitoring AC input voltage DC Load Current Battery string current DC busbar voltage Battery temperature Temperature and humidity
Rectifier startup and shutdown Boost and floating charge of
the rectifier Rectifier voltage and current
adjustment Battery/Load connection and
disconnection Battery string test
Remote control Remote communication Mains availability and mains
phase loss Mains undervoltage or
overvoltage DC overvoltage or undervoltage Rectifier status Load fuse status Battery fuse status Boolean value status
Page17
Communication processing
Note:At present, the TP48200A provides only an in-band management port without software commissioning. Therefore, do not publicize this feature.
Third-party device
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page18
Questions
What parts does the communication power supply consist of? What functions does each part provide?
What are main parameters and indexes of the communication power supply?
What external ports do the SMU and rectifiers provide?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 19
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
2.1 Introduction to AC-to-DC Converter SeriesHuawei develops power supplies from the perspective of networks and therefore understands customer requirements better than other power supply vendors do. At present, Huawei provides the following self-developed power supplies (including under-development power supplies), and the types of power supplies are continuously increasing:
TP48600A-V3F0
TP48300/A
TP48300B-N16B2 TP48600B-N16B2
ETP48240-C2
TP48200AX3H5
Embedded
RRU, Micro site, FTTX, Micro wave
Wireless BTS, Fixed network access, Transmission, Intranet
Core network
30 A 60 A 120 A 200 A 240 A 300 A 600 A 10000
Outdoor
Wall hung
TP4830H-10 ATP4830H-30 A
Cabinet-type
Indoor
Outdoor
Indoor
TP4830H-N06B1
10 A
ETP48200 (8 U)
TP48200B-N20A5TP48200B-N20A6TP48200B-L20A5
TP48200B-N20B1
TP48200AX3H4 TP48200AX3H6
TP4890C-I TP4890C-D06A5TP4890C-D06A3 TP4890C-D06A6
TP4890C-IITP4890C-D06A2TP4890C-D06A1TP4890C-D06A7
ETP48120-C1ETP48200-A6ETP48200-B6
Page20
TP48200AV3R1C03
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 21
2.2 Introduction to the TP48200A
Cabinet BOM Number Model Remarks
A 01071337 TP48200A-H15A3 Integrated cabinet, heat exchange southern-type power cabinet
B 01071338 TP48200A-H15A5 Integrated cabinet, heat exchange northern-type power cabinet
C 01071339 TP48200A-D15A1 Integrated cabinet, natural ventilation southern-type power cabinet
D 01071340 TP48200E-H09A1 Split-type cabinet, heat exchange southern-type power cabinet
E 01071342 TP48200E-D09A1 Split-type cabinet, natural ventilation southern-type power cabinet
F 01071343 TBC300A-DCA1 Split-type cabinet, natural ventilation southern-type battery cabinet
G 01071344 TBC300A-TCA1 Split-type cabinet, thermoelectric cooler (TEC) battery cabinet
Scenario Cabinet Remarks
1 A Used independently
2 B Used independently
3 C Used independently
4 D Used independently
5 E Used independently
6 D+F Used in combination
7 D+G Used in combination
8 E+F Used in combination
9 E+G Used in combination
Names and models of cabinets for the TP48200A
Mapping between application scenarios and cabinets for the TP48200A
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page22
2.2 Introduction to the TP48200A (Continued)
Space for customer equipment (8 U)
Door status sensor
SMU
Rectifier
PDM
Battery compartment
Heat exchanger
Heater (optional for northern-type products)
Composition of the TP48200A-H15A3/H15A5 Composition of the TP48200A-D15A1
Space for customer equipment (8 U)
Door status sensor
SMU
Rectifier
Power distribution module (PDM)
Battery compartment
DC fan
Filter
TP48200E-H09A1 TP48200E-D09A1 TBC300A-DCA1 TBC300A-TCA1
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page23
2.2 Introduction to the TP48200A (Continued)No. Specifications
1
Environmental specificationsOperating temperature of northern-type products (TP48200A-H15A5 and TP48200E-H09A1): –40 C (–40 F) to +45 C (+113 F), with solar radiationOperating temperature of southern-type products (TP48200A-H15A3, TP48200A-D15A1, TP48200E-D09A1, TBC300A-DCA1, and TBC300A-TCA1):–10 C (+14 F) to +45 C (+113 F), with solar radiationStorage temperature: –40 C (–40 F) to +70 C (+158 F)Altitude: ≤ 4000 m (13123.20 ft). When the altitude ranges from 2000 m (6561.6 ft) to 4000 m (13,123.20 ft), the operating temperature decreases as the altitude increases.Humidity: 5% to 95% RH
2 AC power distribution2.1 Three-phase inputs, compatible with single-phase inputs2.2 Number of inputs: 12.3 Maximum input current: 82 A (involving a 16 A maintenance socket)2.4 Rated input voltage: three-phase 346 V AC to 415 V AC/200 V AC to 240 V AC
single-phase 200 V AC to 240 V AC2.5 Input frequency range: 45–65 Hz Rated frequency: 50 Hz or 60 Hz2.6 Surge protection for mains input: class C2.7 One 16 A circuit breaker for the maintenance socket and one 16 A circuit breaker applied to the heater in northern-type products3 DC power distribution3.1 Maximum system output capacity: 200 A3.2 Battery circuit breakers: two single-pole 125 A circuit breakers3.3 Number of disconnection routes:
Load low voltage disconnection (LLVD): two 63 A circuit breakers and two 32 A circuit breakersBattery low voltage disconnection (BLVD): two 16 A circuit breakers and one 10 A circuit breaker (installed in the split-type power cabinet to supply power to fans of the battery cabinet in cabinet combination scenarios)
3.6 Surge protection: surge protection device (SPD): differential mode: 10 kA common mode: 20 kA3 Rectifier3.1 Input voltage: ranging from 85 V AC to 300 V AC, with a rated value of 220 V AC (capable of bearing long-term 350 V AC voltage inputs without damage)3.2 Output voltage: ranging from 42 V DC to 58 V DC, with a rated value of 53.5 V DC. The output voltage is adjustable.3.3 Output power of a single rectifier:
2 U standard 50 A rectifier: 2900 W (176 V AC to 290 V AC)/1200 W (90 V AC to 175 V AC);2 U highly efficient 50 A rectifier: 3000 W (176 V AC to 290 V AC)/1200 W (90 V AC to 175 V AC).
3.4 Efficiency of a 2 U standard 50 A rectifier: ≥ 92%Efficiency of a 2 U highly efficient 50 A rectifier: ≥ 96%
3.5 Voltage regulation precision: ≤ ±0.6%3.6 Current equalization rate: ≤ ±5%4 International protection rating4.1 TP48200A-H15A3/H15A5: IP55 for the equipment compartment and IP45 for the battery compartment
TP48200A-D15A1/ TP48200E-D09A1: IP45TP48200E-H09A1/ TBC300A-TCA1: IP55TBC300A-DCA1: IP34
5 Heat dissipation capacity5.1 TP48200A-H15A3/H15A5/TP48200E-H09A1: 85 W/K
TP48200A-D15A1/TP48200E-D09A1: 140 W/K
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 24
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 25
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 26
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 27
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 28
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 29
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 30
2.2 Introduction to the TP48200A (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
2.3 System Composition of the TP48200A
Page31
No. Component Name Description Remarks
1 PDM Provides power input and output ports.
2 Door status sensor Detects door status and provides the antitheft function.
3 SMUControls the operating of the entire power system, monitors the communication with the host, and monitors the battery compartment or cabinet.
4 Rectifier Converts AC power into DC power.
5Space for customer equipment
Provides 19-inch space for customer equipment.
6Battery compartment/cabinet
Provides space for installing two battery strings.
7 TCU Exhausts heat out of a cabinet.
8 Heater Heats the battery compartment in the case of low temperature. Optional for northern-type products
The TP48200A consists of the PDM, door status sensor, SMU, rectifiers, space for customer equipment, battery compartment or cabinet, and temperature control unit (TCU).
PDM
Door status sensor
SMU
Rectifier
Space for customer equipment
Battery compartment
TCU
Heater (optional for northern-type
products)
PDM
Door status sensor
SMU
Rectifier
Space for customer equipment
TCUPDM
Door status sensor
SMU
Rectifier
Equipment cabinet
TCU of the equipment cabinet
TCU of the battery cabinet
Battery cabinet
Space for customer
equipment
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page32
2.4 Parts of the TP48200A — Mandatory PartsRectifier
SMU
Uses highly efficient 50 A rectifiers in standard configuration and optional standard 50 A rectifiers.
Provides a maximum efficiency of no less than 96%.
Provides a grid voltage ranging from 85 V AC to 300 V AC.
Runs with the operating temperature ranging from –40˚C (–40˚F) to +70˚C (+158˚F).
Provides access to hot swap.
Supports communication over the RS485 serial port.
Supports alarming by indicators.
Supports voltage adjustment and current limiting.
Complies with Restriction of Hazardous Substances (RoHS), Technical Inspection Association (TUV), Conformity with European (CE), Underwriters Laboratories (UL), and Certification Bodies' Scheme (CB).
Displays information on the LCD and provides buttons for ease of operation. Supports the Transfer Control Protocol/Internet Protocol (TCP/IP), Hypertext
Transfer Protocol (HTTP), Simple Network Management Protocol (SNMP), and intelligent equipment communication protocol.
Detects power distribution status, reports alarms, and sends commands by communicating with the host over the COM port.
Supports the remote and local upgrade of software. Hot swap
(1) Run indicator (2) Protection indicator (3) Fault indicator
(1) Run indicator (2) Minor alarm indicator (3) Major alarm indicator(4) Liquid crystal display (LCD) (5) Locking latch (6) Button(6) USB port (reserved) (8) RS485/RS232 serial port (9) FE communications port
Item Color Status Description
Run indicator Green Off The SMU is faulty or has no power input.Blinking at a frequency of 0.5 Hz
The SMU02B is running properly and communicating with the host properly.
Blinking at a frequency of 4 Hz
The SMU02B is running properly but is not communicating with the host properly.
Minor alarm indicator
Yellow Off No minor or warning alarm is generated.Steady on A minor or warning alarm is generated.
Major alarm indicator
Red Off No critical or major alarm is generated.Steady on A critical or major alarm is generated.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page33
2.4 Parts of the TP48200A — Mandatory Parts (Continued)
MonitoringMonitoring on the console Remote
communicationMains absence
Battery equalized charging management Mains overvoltage
Battery float charging management Mains undervoltage
Battery discharge test AC SPD alarm
Battery current limiting management DC overvoltage
Battery temperature compensation DC undervoltage
Battery capacity monitoring and backup time calculation Load fuse blown
Intelligent battery hibernation parameters Charge overcurrent
Remote monitoring Battery string current Load disconnection
Battery imbalance (battery absence) (six ways) Battery disconnection
DC busbar voltage Over-high ambient temperature
Battery temperature (one way) Over-low ambient temperature
Ambient temperature and humidity (one way) Ambient humidity excessively high
Ambient temperature (two ways) Ambient humidity excessively low
n# Rectifier fault
Remote control Rectifier startup and shutdown n# Rectifier protection
Equalized and float charging for rectifiers Single-rectifier fault
Rectifier voltage adjustment Multi-rectifier fault
Rectifier current limiting Battery over-temperature protection
Intelligent rectifier hibernation Battery root open sensor
Load disconnection Door status
Battery disconnection Water sensor
Battery connection Smoke sensor
Powering on loads Spare Boolean value (six ways)
Dry contact output (eight ways)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page34
2.4 Parts of the TP48200A — Mandatory Parts (Continued)
User interface module (UIM)
The UIM02C provides eight dry contact outputs, six Boolean value inputs, and seven ports for sensors such as the smoke sensor, door status sensor, water sensor, and temperature and humidity sensor.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page35
2.4 Parts of the TP48200A — Mandatory Parts (Continued)
PDM panel
Item Requirements RemarksAC input circuit breaker 63 A, three-pole NoneClass C AC surge protection Class C surge protection Along the guide railCircuit breaker for the maintenance socket
One single-pole 16 A circuit breaker
Maintenance socket Universal maintenance socket, complying with CE
Load circuit breakers F1 to F7
Load protection: two single-pole 63 A circuit breakers and two single-pole 32 A circuit breakersBattery protection: two single-pole 16 A circuit breakersBattery circuit breakers: two single-pole circuit breakers
One additional 10 A circuit breaker in the split-type power cabinet, used to control the temperature control power supply of the battery cabinet in cabinet combination scenarios
Battery current divider FL 200 A, 25 mVLLVD contactor Normally closedBLVD contactor Normally open
DC SPD10 kA in differential mode and 20 kA in common mode, alarms generated when the SPD is faulty
Battery circuit breaker Two 125 A circuit breakers None
Voltage drop in the subrack ≤ 0.5 V (full load test)Voltage drop between the battery input port and the load output port
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page36
2.5 Features of the TP48200A
Easy installation
Three-phase inputs, compatible with single-phase inputs
High-level safety and regulatory design
Remote monitoring
Intelligent hibernation
The SMU and rectifiers are hot-swappable, which facilitates the system installation and maintenance. This reduces the operational expenditure (OPEX).
The TP48200A performs comprehensive self-management and battery management functions. The SMU communicates with rectifiers through an RS485 serial port, communicates with the host throughan RS-232, RS422, or RS485 serial port, communicates with third-party equipment through a Huawei SNMP module, and provides dry contact outputs. This enables remote monitoring when the TP48200A is left unattended and reduces the OPEX.
Rectifiers comply with UL, CE, TUV, and CE.
To conserve energy, the power system automatically enables one or more rectifiers to enter the hibernation mode based on the actual load power.
Rated input voltage: three-phase 346 V AC to 415 V AC/200 V AC to 240 V AC
single-phase 200 V AC to 240 V AC
Meeting medium-capacity requirements
Solutions are provided to meet the requirements for medium-capacity outdoor power supplies.
Intelligent temperature control design
1. The TCU uses the intelligent design. Fans provide linear speed regulation, reducing power consumption and extending the service life. 2. The equipment compartment uses heat exchange for heat dissipation, meeting IP55 protection requirements and applying to category C adverse environment. Natural-ventilation cabinets meet IP45 protection requirements and apply to category B environment.
Operability and maintainability
Cable connections, operations, and maintenance are performed in the front of the cabinet, meeting the operation and maintenance requirements of outdoor power supplies.
Features
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page37
2.6 Installation Scenarios of the TP48200A
Note:
Application regions: The TP48200A-H15A3, TP48200A-H15A5, TP48200E-H09A1, and TBC300A-TCA1 apply to category C outdoor environment. The TP48200A-D15A1, TP48200E-D09A1, and TBC300A-DCA1 apply to category B outdoor environment.
Definition of category B environment: rooms inside which the temperature and humidity are not controlled or general outdoor environment, including scenarios with a simple shield such as an awning and an occasional humidity of 100%.
Definition of category C environment: sea, land near a pollution source, or environment with simple shields. If a site is near a pollution source, it is at most 3.7 km (2.30 mi.) away from salt water such as the sea and salt lakes, 3 km (1.86 mi.) away from heavy pollution sources such as smelteries, coal mines, and thermal power plants, 2 km (1.24 mi.) away from medium pollution sources such as chemical, rubber, and galvanization industries, and 1 km (0.62 mi.) away from light pollution sources such as packinghouses, tanneries, and boiler rooms.
Application scenario:
Medium-capacity base station
Installation mode:Ground-mount, outdoor
AC power supply:Three-phase inputs, compatible with single-phase inputs
Rated input voltage: three-phase 346 V AC to 415 V AC/200 V AC to 240 V AC
single-phase 200 V AC to 240 V AC
D.G.
Mains
AC load
DC load
Storage battery
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page38
Questions
What models does the TP48200A provide? What parts does the TP48200A consist of?
What are main features of the TP48200A?
What environments does the TP48200A apply to?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 39
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page40
3.1 Installation Process of the TP48200A
Installation flowchart of the TP48200A
Prepare for the installation.
Install a power cabinet.
Optional when an independent battery cabinet is required
Install a battery cabinet.
Install storage batteries and
sensors.
Connect cables.Verify the installation.
Power on and commission the
system.End
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
3.2 Preparations for Installation
Obtain required tools and cables before installation. For details about cable configurations, see the TP48200A V300R001C03 Configuration Manual V1.0. Ensure that colors of the cables meet local power cable standards.
Tools
Page41
Phillips screwdriverM3 and M4
Flat-head screwdriverM3 and M4
Adjustable wrench Claw hammer
Diagonal pliers Crimping tool
Wire stripper Hydraulic pliers Torque wrench Insulation tape Multimeter Electrician's knife
Nylon binding strap Heat gun Socket wrench Marker Heat shrink tubing
A-shaped ladder (2 m) Brush
Vacuum cleaner
Insulation glovesESD gloves
Protective gloves
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page42
3.3 Cabinet Installation Determine the installation space required for the cabinet by referring to the following figure. For details about the installation, see the TP48200A-D15A1 & H15A3 & H15A5 Quick Installation Guide (V300R001_01),
TP48200E-D09A1 & H09A1 Quick Installation Guide (V300R001_01), and TBC300A-DCA1 & TCA1 Quick Installation Guide (V300R001_01).
Observe the following requirements when you install the TP48200A: 1. Check whether delivered cabinets are intact, and whether paint or electroplated layer flakes off. 2. Check whether
configurations of delivered cabinets are consistent with configurations on the system. 3. Route cables based on requirements in the quick installation guide, ensuring that AC power cables are routed on the left of the cabinet and DC power cables and signal cables are routed on the right of the cabinet. 4. Switch off the battery circuit breaker before you install the battery cable. The TP48200A uses positive grounding. Therefore, connect the negative terminal before you connect the positive terminal, avoiding short circuits on the batteries caused by contact between the screwdriver and the shell.
After the cabinet is installed, block the cable outlets using sealing mud.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page43
3.3 Cabinet Installation — Installing Parts (Continued)
Installing rectifiers
Installing batteries
rectifier rectifiers
rectifiers
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page44
3.4 Electrical Installation — Installing Cables
Note: Switch off all circuit breakers including the battery circuit breaker before you install cables.
Cables are installed in the following sequence: ground cable > signal cable > load cable > battery cable > AC input cable.
The ground cable and AC input cable are routed out of the cabinet from the left leading-out hole at the bottom. The signal cable and load cable are routed out of the cabinet from the right leading-out hole at the bottom.
Sequence for installing cables:
Rules for routing cables out of the cabinet:
Installing the ground cable
Example: TP48200A-H15A3 and TP48200A-H15A5 (heat exchange)
Installing a Ground Cable
Ground Cable
Site ground bar
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page45
3.4 Electrical Installation — Installing Cables (Continued)
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page46
3.5 Verification After Installation
Obtain fireproof mud from the packing box of the cabinet base, block cable holes using fireproof mud, and insert rubber plugs in unused cable holes. Fireproof mud
Leading-out hole
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
3.6 Power-On and Commissioning
Page47
(1) Manual battery switch (with a cover) (2) SMU02B (3)UIM02C
SMU
PDM
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
3.6 Power-On and Commissioning (Continued)
Page48
SMU.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
3.6 Power-On and Commissioning (Continued)
Page49
SMU
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Questions
What installation mode does the TP48200A use?
What is the procedure for installing the TP48200A?
What precautions must be taken before you power on the TP48200A?
What parameters need to be verified before you complete the installation and leave the site?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 51
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
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4.1 Preparations for Acceptance
Purpose:
Acceptance is an activity performed after the installation to check whether
the system meets the delivery criteria. It is an important step before delivery.
Generally, customers participate in or authorize the acceptance. Accepted
systems can be delivered to customers.
Document:
The acceptance manual provided by R&D personnel is the basis of the
acceptance.
Acceptance items and criteria, for example, parameter settings, are
determined based on specific requirements.
Tool:
A multimeter is required for testing large currents. Clip-on ammeter Fluke
337 is recommended.
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4.2 Acceptance Method
Acceptance process
The acceptance process is as follows: verify the overall installation; verify the
system before power-on; verify the installation of rectifiers; verify the installation
of the SMU; verify the installation of the PDM; verify parameter settings; verify
system functions and performance.
Generally, acceptance of a system power supply is performed based on the
proceeding process. After the acceptance is completed, customers verify and
accept the system.
Method
Verify perceptual items such as overall installation with customer representatives
and ask customer representatives to sign after confirmation.
Verify parameter settings and system performance using a tool such as a
multimeter, record related data, and ask customer representatives to sign after
confirmation.
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4.3 Acceptance Criteria
Specific requirements and customer requirements are described:
Specific requirements are described for parameters such as the float voltage,
battery capacity, and power-off parameters. These parameters must be
specified in the acceptance manual as acceptance criteria.
Perceptual items such as appearance and cable management must be
verified and signed by customers after confirmation.
No requirement is specified:
If no requirement is specified, the acceptance must be performed based on
the TP48200A V300R001C03 Power System Acceptance Manual.
For details, see the TP48200A V300R001C03 Power System Acceptance
Manual.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page55
Questions
What is the purpose of the acceptance?
What preparations are required before the acceptance?
What is the acceptance process of the TP48200A?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 56
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page57
5 Routine Maintenance
This chapter contains the following content:
Objective and principle for maintenance
Requirements for maintenance personnel
Routine maintenance tasks and period
Routine maintenance content and methods for the system power supply
Replacement of key fragile parts
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5.1 Objective and Principle for Maintenance
After long-term operating, a power system may fail to function properly or even
become faulty because of part aging, adverse weather such as lightning,
adverse environments, or human factors. To remove the hazards and avoid
system breakdown caused by power supply faults, perform periodic
maintenance for power supplies on the live network.
Principles for the maintenance:
Ensure equipment security and personal safety during the maintenance. For
details, see the TP48200A V300R001C03 User Manual.
Take proper measures to prevent faults from being intensified during the
maintenance.
Note that the objective of maintenance is not only to rectify faults but also to
remove hazards and avoid faults.
Check customer requirements, for example, whether power failures are
allowed.
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5.2 Maintenance Personnel
Maintenance personnel must have basic electrical operation skills and electrical
safety knowledge and obtain electrician certificates recognized by the local
government or other organizations. Maintenance personnel in China must have
a low-voltage electrician certificate.
Maintenance personnel must understand the system composition and working
principles and understand the failure modes and maintenance modes of parts
such as AC input modules, rectifiers, DC contactors, SMUs, and circuit
breakers.
Maintenance personnel must understand common operation methods and
consequences of misoperations, avoiding power failures caused by
misoperations during the maintenance.
Maintenance personnel must know how to use common instruments such as
multimeters and oscilloscopes.
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5.3 Routine Maintenance Tasks for the System Power Supply
Routine maintenance checklist
Perform preventive maintenance inspection (PMI) against the system power supply every half year. Rectify faults in time during the maintenance. Perform PMI more frequently in harsh environments, for example, an environment with much dust.
Task Content Measures Remarks
Cabinet appearanceThe paint or electroplated coating flakes off and scratches occur.
Repaint or repair the surface.TP48200A V300R001C03
Fan An alarm for a fan failure is generated. Replace the fan.TP48200A V300R001C03
Heat exchanging core
The heat exchanging core, air intake vent, or air exhaust vent is blocked. An alarm is generated for temperature rise in the cabinet.
Clean the exchanging core, air intake vent, and air exhaust vent using a water gun.
TP48200A V300R001C03 heat exchange cabinets
Air filter
The air filter, air intake vent, or air exhaust vent is blocked. An alarm is generated for temperature rise in the cabinet.
Replace the air filter. Perform the maintenance every six to twelve months in favorable environments. Perform the maintenance every three to six months in harsh environments.
TP48200A V300R001C03 natural-ventilation cabinets
Electrical connection Indicators are in normal statusFor details about how to rectify the fault, See chapter 5 "Troubleshooting."
TP48200A V300R001C03
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5.3 Routine Maintenance Tasks for the System Power Supply (Continued)
Electrical check
Check the system output voltage over the LUI, Web, or console and measure the
output voltage using a multimeter. Check whether the difference between the
displayed value and the actual value is within 0.5 V. If the output voltage does not
meet the requirements, the system is faulty. Take proper measures to rectify the
fault.
Check the system load current and battery current over the LUI, Web, or console
and measure the current using a clip-on ammeter. Check whether the difference
between the displayed value and the actual value is within 1 A. If the current does
not meet the requirements, take proper measures to rectify the fault.
Check electrical devices such as contactors, circuit breakers, and cables with
your eyes. If any electrical devices are aging or faulty, make records and perform
maintenance.
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5.3 Routine Maintenance Tasks for the System Power Supply (Continued)
PMI
Check the monitoring unit. If any alarms are generated, take proper measures
to clear the alarms.
Check indicators on the SMU and rectifiers. When the SMU operates properly,
the green indicator blinks, and the red indicator is off. When a rectifier
operates properly, the green indicator is steady on, and the yellow indicator
and red indicator are off.
If any errors occur, take proper measures by referring to the TP48200A
V300R001C03 User Manual.
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5.4 Part Replacement AC SPD
Possible causes of an AC SPD fault are as follows:
The SPD is faulty. In this case, replace the SPD.
The terminal is loose. In this case, tighten the terminal. If the alarm persists, replace the SPD.
The window becomes red when the SPD is faulty. The terminal becomes loose during
the transportation and installation.Replacing an AC SPD:
Remove the faulty AC SPD.
Install a new SPD.
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5.4 Part Replacement (Continued)
Replacing a rectifier:
Unscrew the rectifier panel using a flat-head screwdriver.
Gently draw the handle outwards, and then remove the rectifier from the subrack, as shown in Figure 6-1.
Insert a new rectifier into the subrack. Then loosen the screws on the handle and pull out the handle.
Slide the new rectifier into the subrack slowly along the guide rail, and then lock the handle.
Tighten the screws on the handle, as shown in Figure 6-1.
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5.4 Part Replacement (Continued)Replacing an SMU:
Push the locking latch towards the left.
Draw the handle outwards to remove the SMU, as shown in Figure 6-3.
Insert a new rectifier into the corresponding subrack, push the locking latch towards the left, and pull out the handle. Gently insert the PW48S24C along the guide rails into the subrack. When the PW48S24C is completely inserted, flip the locking latch towards the right, as shown in Figure 6-1.
Reset parameters on the SMU.
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5.4 Part Replacement (Continued)Replacing a circuit breaker:Disconnect the power supply from the circuit breaker. For example, when you replace an input circuit breaker, interrupt the inputs and switch the circuit breaker to the OFF position.Remove the cables or copper bars connected to the circuit breaker using a Phillips screwdriver, and then wrap the cables or copper bars using polyvinyl chloride (PVC) insulation tapes to avoid hazards.Press the contact plate at the bottom of the circuit breaker using a flat-head screwdriver and remove the circuit breaker, as shown in the following figure.Press the contact plate at the bottom of the circuit breaker using a flat-head screwdriver again to install a new circuit breaker to the correct position. Then push the contact plate upwards using the screwdriver.Install the cables or copper bars on the circuit breaker using a Phillips screwdriver.Switch the circuit breaker to the ON position and connect the power supply to the circuit breaker, as shown in the following figure.
Note:
Do not wear any conductive objects on your hands during the operation.
Use insulation tools during the operation.
Check the polarities of power cables and connectors.
The DC power distribution space is limited. Therefore, select proper operation space before any operation.
When you perform any operations after the system is powered on, control your hands, wrists, arms, and whole body, preventing tools from slipping and therefore avoiding accidents caused by large movement of the tools or human body.
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Questions
What tasks does routine maintenance of the TP48200A contain?
How to identify whether the parts are damaged?
How to replace the parts?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 68
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
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6.1 Troubleshooting Process of the TP48200A
Start
Observe indicators
End
Is the fault rectified?
YN
Check system statuson the SMU
Perform troubleshooting
Analyze the problem
Formulate a solution
Query system status
Implement the solution Record the operation steps
Note:
If you have trouble identifying
faults and analyzing causes,
see the maintenance manual
and troubleshooting cases.
Record every key step during
solution implementation. Such
key steps are the reference for
reformulating a solution if the
fault is not rectified.
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6.2 Common Faults and Troubleshooting MeasuresSymptom Possible Cause Measures
AC power failure The AC input power cable is faulty. The mains supply or D.G. is faulty.
1. If the AC input power cable is not connected properly, reconnect it.2. If the AC input power is unavailable, check that no open or short circuits occur in the AC input loop. If the
AC input loop is normal, contact the mains supplier. If the D.G. provides the AC input, check and repair the D.G. by referring to the D.G. User Manual. If the power failure is for a short time, use storage batteries to power DC-powered loads. When the outage lasts long, use other energy sources to supply power.
AC overvoltage or undervoltage
The AC overvoltage or undervoltage alarm threshold is not set properly on the SMU.
The mains supply or D.G. is faulty.
If the AC overvoltage or undervoltage alarm threshold is not set properly, adjust it to a proper range.If the AC input is mains, for the electrical grid where the mains voltage is greater than the maximum value or less than the minimum value for a long time, negotiate with the related electrical grid maintenance personnel to improve the electrical grid. If the D.G. provides the AC input, check and repair the D.G. by referring to the D.G. User Manual.
DC overvoltage and undervoltage
The DC overvoltage or undervoltage alarm threshold is not set properly on the SMU.
rectifiers faults
Adjust the DC overvoltage or undervoltage alarm threshold to a proper value.Remove all rectifiers and insert them again while ensuring proper AC power supply. If an undervoltage alarm is generated when you connect a certain rectifier, replace this rectifier.
The rectifier is faulty.
The rectifier has poor contact with the monitoring backplane.
The rectifier is faulty.
Check the fault indicator on the rectifier panel. If the indicator is steady red, the rectifier is faulty. Remove the faulty rectifier and insert it again after a while. If the alarm persists, replace the rectifier. Check for other faulty rectifiers and take proper measures to rectify the faults.
Rectifier protection The input voltage to the rectifier is not in the normal range.
The rectifier is faulty.
Check whether the AC input voltage is higher than the AC overvoltage threshold (300 V) of the rectifier or lower than the AC undervoltage threshold (85 V) of the rectifier. If the power grid is in an overvoltage or undervoltage condition for a long period, contact maintenance personnel of mains supplier to improve the mains grid. If the input voltage to the rectifier is within the specified range but the alarm persists, replace the rectifier.
Rectifier communication interruption
The signal cable to the rectifier is not connected properly.
The rectifier is not installed. The rectifier has poor contact with the monitoring backplane. The rectifier is faulty. The monitoring backplane is faulty.
Check whether the rectifier is installed and whether it is properly connected. If the SMU is inserted into another position, insert the SMU into the correct position. If the communication of a single rectifier fails, reseat the rectifier on which a yellow indicator is blinking. Check whether the rectifier is securely connected. If yes, replace the rectifier. If the communication of all rectifiers fails, reseat the SMU. Check whether the SMU is securely connected. If yes, replace the SMU. If the alarm persists, replace the AC/DC power distribution subrack.
Charge overcurrent Rectifier communication failure The battery loop is faulty.
Check whether the rectifier is installed in the subrack and whether the rectifier is properly connected. Install the rectifier in the correct subrack. If the SSU has poor contact with the SSR, remove and then insert the SSU, and ensure that the SSU is fastened to the SSR. Check that the battery loop is not faulty or short-circuited. Check the storage batteries and replace faulty ones.
System alarms of the TP48200A are classified into four types: critical alarms, major alarms, minor alarms, and warning alarms.
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6.2 Common Faults and Troubleshooting Measures (Continued)Symptom Possible Cause Measures
Load disconnection The load circuit breaker is in the OFF position.
The contactor is faulty. The SMU load disconnection voltage is set too high. The load power is greater than the configured rectifier power, causing a low output voltage.
1.Check whether the load cable is loose.2.If the load circuit breaker is in the OFF position, check whether a short circuit or overcurrent occurs. If no, switch the
load circuit breaker to the ON position.3.Check whether the contactor is faulty and whether the contactor can be connected or disconnected. If the contactor is
faulty or cannot be connected or disconnected, replace the contactor. Check whether the LLVD voltage is overhigh. If it is overhigh, adjust the voltage to the normal range. Check whether the load power is higher than the preset rectifier power. If the load power is higher than the preset rectifier power, add rectifiers. If the load power is greater than the maximum power supported by the TP48200A, reduce the loads.
Battery disconnection The battery parameters are not properly set on the SMU.
The contactor is faulty.
1.If the mains supply fails or the battery voltage is below the BLVD threshold, contact the mains supplier.2.Check that the BLVD is enabled on the SMU. Check the battery cables and connectors, and replace faulty ones. Check
whether the contactor is faulty and whether the contactor can be connected or disconnected. If the contactor is faulty or cannot be connected or disconnected, replace the contactor.
Battery root open sensor
The battery loop is faulty. The contactor is faulty. The storage
batteries are faulty.
1.Check the battery cables and connectors on the battery loop, and replace faulty ones.2.Check whether the contactor is faulty and whether the contactor can be connected or disconnected. If the contactor is
faulty or cannot be connected or disconnected, replace the contactor. Check the storage batteries and replace faulty ones.
Overhigh or over low ambient temperatureThis alarm can be generated only when an ambient temperature sensor is installed.
The alarm threshold for ambient temperatures is not properly set on the SMU.
The temperature inside the shelter where the ambient temperature sensor is installed is beyond a normal range. The temperature sensor is faulty.
1.Check that the alarm threshold for ambient temperatures is properly set on the SMU.2.Repair the temperature control system in the shelter if it is faulty. After the temperature inside the shelter is adjusted to a
normal range, the alarm is automatically cleared. If the alarm still persists, check whether the temperature sensor is faulty.
Overhigh or over low ambient humidityThis alarm can be generated only when a humidity sensor is installed.
The alarm threshold for ambient humidity is not set properly on the SMU.
The humidity inside the shelter that houses the humidity sensor is not in the normal range. The humidity sensor is faulty.
1.Check that the alarm threshold for ambient humidity is properly set on the SMU.2.If there is water in the shelter, remove water by using a dry cotton cloth or dehumidifier. If the ambient humidity is within a proper range but the alarm persists, check the humidity sensor. If the humidity sensor is faulty, replace it.
Overhigh or over low battery temperatures
Temperature inside the battery compartment is greater than the maximum value.
The alarm threshold of battery temperature is not properly set on the SMU. The charge current of storage batteries is too high. The temperature sensor is faulty.
1.Check that the alarm threshold for battery temperatures is properly set on the SMU.2.Check whether the temperature inside the battery cabinet is overhigh. If it is, lower the temperature inside the battery
cabinet. The alarm is automatically cleared after the temperature lowers to the proper range. If the charge current is greater than the maximum value, change equalized charging into float charging and check whether the charge current is lowered. If the charge current is still overhigh, reduce the charge current. If the battery temperature is still too high, replace faulty storage batteries.
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6.2 Common Faults and Troubleshooting Measures (Continued)Symptom Possible Cause Measures
Door status alarm(This alarm can be generated only when a door status sensor is installed.)
The cabinet door is open.
The door status sensor is faulty.
1. Close the cabinet door.2. If the alarm persists after the cabinet door is closed, check and repair the door status
sensor.
Water sensor alarm(This alarm is generated when a water sensor is installed.)
There is water in the shelter.
The water sensor is faulty.
1. If there is water in the shelter, remove water by using a dry cotton cloth or dehumidifier.
2. If there is no water but this alarm persists, check and repair the water sensor.
Smoke sensor alarm(This alarm can be generated only when a smoke sensor is installed.)
There is smoke in the shelter.
The smoke sensor is faulty.
1. If there is smoke in the shelter, put out the fire immediately and open the shelter door for ventilation.
2. If there is no smoke but the alarm persists, check and repair the smoke sensor.
Load fuse blown
The load fuse is blown.
The load circuit breaker is in the OFF position.
1. Check whether the detection cable of the load fuse is loose.2. Check whether the load circuit breaker is in the OFF position. If it is, switch it to the
ON position. If the alarm persists after the circuit breaker is set to ON, check the load fuse. If the voltage between both ends of the fuse is close to 0 V, the fuse is functional. Otherwise, the fuse is blown. Then replace the fuse. If the alarm persists after the fuse is replaced, check the new fuse. If the new fuse is blown or the load circuit breaker is automatically switched to the OFF position, the load power on this route may be excessive or a short circuit may occur. In this case, you need to rectify the fault on this load loop.
AC SPD fault The AC SPD is faulty.
Observe the indication window on the AC surge protection module. If it turns red, replace the surge protection module. If it remains green, check whether the cable for detecting AC SPD faults is connected properly and whether the cable is damaged or cracked. If the cable is not connected properly or is faulty, replace the cable and connect it properly. If the cable is connected properly and in good condition, the alarm loop in the SMU is faulty. Then replace the SMU.
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6.2 Common Faults and Troubleshooting Measures (Continued)Troubleshooting rectifiers
Indicator Color Status Description Solution
Run indicator Green
On Outputs of the rectifier are normal. No operation is required.
Off The rectifier has no output.Check AC inputs. If AC inputs are normal, replace the rectifier.
Alarm indicator Yellow
Off No alarm is generated for the rectifier. No operation is required.
On
A power limiting pre-warning alarm is generated for the rectifier because of an overhigh temperature.
A shutdown alarm is generated because of an overhigh or overlow ambient temperature.
Ensure that the air intake vent and air exhaust vent of the rectifier are not blocked and that the ambient temperature is normal.
An AC overvoltage/undervoltage protection alarm is generated.
Check the voltage of the grid.
The rectifier is hibernated or shut down. No operation is required.
Fault indicator Red
Off The rectifier is operating properly. No operation is required.
OnThe rectifier is locked because of output overvoltage.
Remove the rectifier and insert it again after 1 minute.
The rectifier is faulty and has no output. Replace the rectifier.
Blinking at a frequency of 4 Hz
Applications are being loaded to the rectifier.
No operation is required. The rectifier automatically recovers after the loading is completed.
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Questions
What is the basic process of troubleshooting the system power supply?
How to rectify common faults?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page 75
Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
7.1 Engineering Design — Rectifier Quantity Calculation
Six steps for calculating power system parameters
Determine the following parameters:
Calculate the battery capacity.
Calculate the maximum battery charge current.
Calculate the output power (P∑) required for the system.
Determine the AC-to-DC converter type.
Calculate the number of rectifiers.
Maximum power of DC equipment loads, average power of loads, input power of inverters, and battery backup time
Design requirements
DC load voltage, load power, and battery backup time
Pcmax = Vequalize x η x CN, where η is the charge factor of storage batteries, ranging from 0.1 to 0.2, with the default value of 0.1. The equalized charging voltage is 56.4 V.
P∑ = Max (Pmax + Punit, Pavg + Pcmax)
Select the AC-to-DC power system type based on the power system list.
N = Roundup (0.95 x P∑/Punit – 0.1, 0)Roundup is a function.
Page76
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7.2 Engineering Design — Battery Capacity Calculation
In the preceding formula:
C indicates the total battery capacity in the unit of Ah. W is the load power in the unit of watts. In economic configuration,
W equals Pavg, and in standard configuration, W equals Pmax. t indicates the backup time of storage batteries in the unit
of hour. 1.25 indicates the aging coefficient.1.04: voltage coefficient. Vr indicates the rated voltage of the battery string (V).
For –48 V power supply system, set the parameter to 48. For 24 V power supply system, set the parameter to 24. ŋ
indicates the capacity coefficient of the storage battery (related to the discharge hour rate of the storage battery).
Note: C10 refers to 10 hour rate capacity of the storage battery, that is, nominal capacity of the storage battery. In the
formula, the battery capacity coefficient (η) relates to the discharge time (in hours) in –48 V systems. The discharge time
increases in proportion to the value of η. The following table lists the mapping.
The battery capacity can be calculated in the following formula:
Discharge time (hour) 0.5 1 1.5 2 3 4 5 6 8 9 10 12 ≥ 16
η 0.4 0.55 0.63 0.7 0.75 0.8 0.85 0.9 0.95 0.98 1 1.01 1.03
Page77
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Cross-sectional area of a conductor
Ampacity (A)
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Ampacity (A)
Ampacity (A)
Ampacity (A)
Ampacity (A)
7.3 Engineering Design — Cable Specifications
Note:The preceding tables source from the DKBA3265-2010.12 Power Cable Design and Selection Specification.If the ambient temperature is high, the related data must be derated accordingly. Select cables based on customer requirements.
For details on the AC cable design, see the following tables.
Ampacity of two loaded copper conductors (single-loop) under the following conditions: PVC insulation, conductor temperature of 70 C (158 F), and ambient temperature in the air of 30 C (86 F)
Ampacity of two loaded copper conductors (single-loop) under the following conditions: cross-linked polyethylene (XLPE) insulation, conductor temperature of 90 C (194 F), and ambient temperature in the air of 30 C (86 F)
Page78
Cross-sectional area of a conductor
Ampacity (A)
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Cross-sectional area of a conductor
Ampacity (A)
Ampacity (A)
Ampacity (A)
Ampacity (A)
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7.3 Engineering Design — Cable Specifications (Continued)
Voltage drop is involved in DC cable configuration. The DC cable must be configured based on the following formulas.
The cross-sectional area of a power cable can be calculated in the following formula:
U
LIS
*
*
In the preceding formula:
I is the working current of the equipment in the unit of Ampere (A). L is the loop length of the power cable in the unit of meter (m). This value is set based on the actual survey. γ is the electrical conductivity of copper conductors, equal to 57 m/Ω·mm 2.
ΔU is the voltage drop value of the loop, with the unit of V. For the value of this parameter, see the following figure. S is the cross-sectional area of the power cable, with the unit of mm2. The calculation result must be rounded up to a standard value. For example, if the calculation result is 14.8 mm2, it must be rounded up to the standard value 16 mm2.
Rated operating voltage
of equipment
–48 V +24 V
Minimum input voltage of
equipment
38.4 V 40 V 19.2 V 20 V
ΔU 2.6 V 1.0 V 1.3 V 0.4 V
Note: The preceding table sources from the DKBA3265-2010.12 Power Cable Design and Selection
Specification. Select cables based on customer requirements.
Page79
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Installation position and environment of the power cabinet: describes the altitude, position, and surrounding environment of the equipment room.Power supply: involves the power supply mode, position of the AC power distribution cabinet, cable routing, and cabling distance.Power load: involves the load position and distance between the load and the power system.Installation materials: involves the calculation of installation materials.
Huawei engineers and customer engineers conduct the engineering survey. Huawei and
customers determine the installation place, cable layout, and installation materials and
specifications. After onsite survey and data collection are completed, the customer
representative and Huawei project preventative sign the onsite survey report and data
collection report.
7.4 Engineering Survey
Page80
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Questions
How to calculate the number of rectifiers?
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Contents
Chapter 1 Working Principles
Chapter 2 Introduction to the TP48200A
Chapter 3 Installation and Commissioning
Chapter 4 Acceptance
Chapter 5 Routine Maintenance
Chapter 6 Troubleshooting
Chapter 7 Engineering Design
Chapter 8 Test
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page83
8 Test
In a system test, measures (visual inspection or using instruments) are taken
to check whether the performance, functions, and serviceability of a product
meet the design requirements. Product tests after GA are performed to show
the compliance of tested equipment with customer specifications.
Product tests after GA are admission tests performed based on customer
requirements to strengthen customers' confidence.
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8.1 Test Network of the System Power Supply
AC power supply
Power analyzer
TP48200A Multimeter DC load
Current divider
Storage battery
PC
Oscilloscope
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8.2 Test Instruments
Power analyzer: obtains AC input information, such as AC input voltage,
current, power, THD, and PF, and is mandatory. The model of WT1600 is
recommended.
Multimeter: obtains the output voltage, input voltage, and dry contact status.
Fluke 87 multimeter is recommended. Current divider: obtains system output
current. It is mandatory for efficiency tests. The clip-on ammeter (for
example, Fluke 337) can be used based on customer requirements.
Oscilloscope: monitors the system output voltage. Generally, it is not
required. The model of Agilent 5014 is recommended.
DC load: functions as the system load. It can be a resistance load or an
electronic load.
PC: monitors and controls the system, communicates with the host, and
verifies communication with the host.
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8.3 Common Test Items
Efficiency
Efficiency is a key index of a system. It indicates the power conversion efficiency
of a system. It can be calculated in the following formula: η = Po/Pin.
Obtain the system input power (Pin) on the power analyzer.
Obtain the output current (Io) on the current divider. Obtain the output voltage
(Uo) on the multimeter. Po is equal to Uo multiplied by Io.
Obtain the system input THD and PF on the power analyzer. Test and record the
efficiency, THD, and PF under different input voltages (85% Un, Un, or 110% Un)
and loads (10% to 100%).
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page87
8.3 Common Test Items (Continued)
Unbalance of load sharing
Unbalance of load sharing indicates the load sharing status among all rectifiers in
a system. Generally, it is no more than 5%.
Obtain the output current (Io1, Io2, ..., Ion) of each rectifier on the SMU.
Obtain the system output current (Io) on the current divider.
Record the rated current of each rectifier as In1, In2, ..., Inn.
I = In1 + In2 + ... + Inn
Unbalance of load sharing = max (abs (Io1/In1 – Io/I), abs (Io2 – Io/I), ..., abs
(Ion/Inn – Io/I)
Test and record the unbalance of load sharing under different output voltages and
loads.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page88
8.3 Common Test Items (Continued)
Peak-to-peak noise voltage
The peak-to-peak noise voltage indicates the ripple content of the system
output voltage. It is a key index of the system output performance.
Use an oscilloscope to test the peak-to-peak noise voltage.
Set the bandwidth of the oscilloscope to 20 MHz. (Operations vary based on
oscilloscopes. For details, see the oscilloscope specifications.) Select the AC
coupling mode.
Set the time axis of the oscilloscope to 5 seconds per scale. Obtain the peak-to-
peak value (namely, the peak-to-peak noise voltage) on the oscilloscope.
Test and record the peak-to-peak noise voltage under different output voltages
and loads.
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page89
8.3 Common Test Items (Continued)
Others
Space is limited. Therefore, some test items are not described here.
For more test items, see the attachment.
For details about the test methods, see the DKBA 2038-2010.11 AC-to-DC
Power system Test Specification.
TP48200A V300R001C03 Test Item Manual.xl
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved. Page90
Questions
What is the purpose of performing the system test?
What basic test instruments are required for performing a system test? How to perform an efficiency test?
Copyright © 2012 Huawei Technologies Co., Ltd. All rights reserved.
Summary
This slide describes the development history of AC-to-
DC converters and the positioning of Huawei power
supply series. It describes the TP48200A in terms of its
system composition, working principles, installation and
commissioning, acceptance, routine maintenance,
troubleshooting, engineering design, and system tests.
It provides reference for customer service engineers in
site design, installation and maintenance,
troubleshooting, and customer tests.
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