TP48600B-N20B1 V500R002. User Manual. Issue 01. Date HUAWEI TECHNOLOGIES CO., LTD.

Transcription

1 V500R002 Issue 01 Date HUAWEI TECHNOLOGIES CO., LTD.

2 2015. 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: Website: Huawei Industrial Base Bantian, Longgang Shenzhen People's Republic of China support@huawei.com i

3 About This Document About This Document Overview This document describes the DC power system in terms of product introduction, component introduction, and system maintenance. The figures of this document are for reference only. Intended Audience This document is intended for: Sales engineers Technical support engineers Maintenance engineers Symbol Conventions The symbols that may be found in this document are defined as follows. Symbol Description Indicates 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. 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. ii

4 About This Document Change History Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues. This issue is the first official release. iii

5 Contents Contents About This Document... ii 1 Safety Precautions General Safety Precautions Electrical Safety Battery Safety Cable Layout Mechanical Safety Overview Introduction Features Working Principle System Configurations Components Interior PDU Rectifier SMU02B UIM02C (Optional) Communications Expansion Module NIM01C Battery Temperature Sensor Maintenance Routine Maintenance Rectifying Common Faults AC Failure AC Over Volt AC Under Volt Phase A/B/C Failure DC Over Volt DC Under Volt Batt Chg. Overcur LLVD Disconnected iv

6 Contents BLVD Disconnected Battery Fuse Break High Amb. Temp Low Amb. Temp High Amb. Humi Low Amb. Humi Batt. High Temp Batt. Low Temp Rectifier Missing Rect Fault Rect Protection Rect Comm Fault Load Fuse Break AC SPD Alarm DC SPD Alarm Identifying Component Faults Identifying AC SPD Faults Identifying Circuit Breaker Faults Identifying Rectifier Faults Identifying SMU Faults Parts Replacement Replacing a Rectifier Replacing an SMU Replacing an AC SPD Module Replacing a Circuit Breaker Replacing the PCB of UIM02C Replacing a Battery Temperature Sensor A Technical Specifications A.1 Environment Specifications A.2 Electrical Specifications A.3 EMC Specifications A.4 Cabinet Specifications A.5 Rectifier Specifications B Electrical Conceptual Diagram C Associations Between Dry Contacts and Alarms D Acronyms and Abbreviations v

7 1 Safety Precautions 1 Safety Precautions 1.1 General Safety Precautions Ensure that the product is used in environments that meet its design specifications to avoid damaging components and voiding the warranty. Ensure that only trained and qualified personnel install, operate, and maintain Huawei equipment. Comply with local laws and regulations. The safety instructions in this document are only supplements to local laws and regulations. Do not operate the device or cables during thunderstorms. Remove metal objects such as watches, bracelets, and rings when using the product. Use insulated tools on the product. Follow specified procedures during installation and maintenance. Measure contact point voltage with an electric meter before touching a conductor surface or terminal. Ensure that the contact point has no voltage or it is within the specified range. Note that the load may power off during maintenance or fault location if the power system is not connected to a battery or if battery capacity is insufficient. Store cables for at least 24 hours at room temperature before laying out them if they were previously stored at sub-0ºc. Routinely check installed equipment and perform maintenance according to the user manual; replace faulty components quickly to ensure that the device works properly. 1.2 Electrical Safety Grounding Requirements When installing a device, install the ground cable first. When removing a device, remove the ground cable last. Before operating a device, ensure that the device is properly grounded. AC and DC Operation Requirements 1

8 1 Safety Precautions ESD Requirements The power system is powered by high-voltage power sources. Direct or indirect contact (through damp objects) with high-voltage power sources may result in serious danger. Non-standard and improper operations may result in fire and electric shocks. Before electrical connections, turn off the upstream protection switch for the device. Before connecting the AC power supply, ensure that electrical connections are complete. Before you connect cables to loads or battery cables, check cable and terminal polarities, preventing reverse connections. To prevent electrostatic-sensitive components from being damaged by the static on human bodies, wear a well-grounded ESD wrist strap or gloves when touching circuit boards. When holding a board, hold its edge without components. Do not touch chips. Removed boards must be packaged with ESD packaging materials before storage and transportation. Liquid Prevention Requirements Place this product far away from areas with liquid. Do not place the product under positions prone to leakage, such as air conditioner vents, ventilation vents, and feeder windows of the equipment room. Prevent liquid from entering the inside of the device to avoid short circuits, and ensure that there is no condensation inside the equipment room or device. If detecting any liquid inside the device, immediately disconnect the power supply and contact the administrator. 1.3 Battery Safety Basic Requirements Before installing, operating, and maintaining batteries, read the instructions provided by the battery vendor. The safety precautions in this document are for special attention. For more safety precautions, see the instructions provided by the battery vendor. Before installation and maintenance, wear goggles, rubber gloves, and protective clothes to prevent injury caused by electrolyte overflow. When handling a battery, ensure that its electrodes are upward. Leaning or reversing batteries is prohibited. Keep the battery loop disconnected during installation and maintenance. Secure battery cables to a torque specified in battery documentation. Loose connections will result in excessive voltage drop or cause batteries to burn out when the current is large. 2

9 1 Safety Precautions Preventing Battery Short Circuit Preventing Flammable Gas Short circuits will generate high transient currents and release a great deal of energy, which may cause personal injury. If conditions permit, disconnect the batteries in use before performing any other operations. Preventing Battery Leakage Do not use unsealed lead-acid batteries. Place and secure lead-acid batteries horizontally to prevent device inflammation or corrosion due to flammable gas emitted from batteries. Lead-acid batteries in use emit flammable gas. Therefore, store the batteries in a place with good ventilation, and take measures against fire. High temperatures may result in battery distortion, damage, and electrolyte overflow. When the battery temperature is higher than 60 C, check the battery for electrolyte overflow. If the electrolyte overflows, absorb and counteract the electrolyte immediately. When moving or handling a battery whose electrolyte leaks, exercise caution because the leaking electrolyte may hurt human bodies. When you find electrolyte leaks, use sodium bicarbonate (NaHCO 3 ) or sodium carbonate (Na 2 CO 3 ) to counteract and absorb the leaking electrolyte. Preventing Battery Overdischarge After you connect batteries, ensure that the battery fuse is disconnected or the circuit breaker is OFF before powering on the power system. This prevents battery overdischarge, which damages batteries. 1.4 Cable Layout When cables are used in a high temperature environment, the insulation layer may age and be damaged. Ensure that a sufficient distance exists between the cables and the DC busbar, shunt, and fuse. 3

10 1 Safety Precautions Signal cables must be bound separately from strong-current cables and high-voltage cables. Cables prepared by the customer must have the fire resistance capability. Cables must not pass behind the air exhaust vents of rectifiers in the cabinet. 1.5 Mechanical Safety Hoisting Devices Using a Ladder Do not walk under cantilevers or raised objects. Only trained and qualified personnel are allowed to perform hoisting operations. Before hoisting objects, check that all hoisting tools are available and in good condition. Before hoisting objects, ensure that hoisting tools are firmly fixed onto a weight-bearing object or wall. Ensure that the angle formed by two cables is less than 90 degrees. Use only ladders that are in good condition. Find out and do not exceed the maximum weight capacity. The recommended angle for a ladder against another object is 75 degrees. Measure the gradient with a right angle or your arms, as shown in Figure 1-1. Ensure that the wider end of the frame is at the bottom, the base cannot slide, and that the ladder is securely positioned. Figure 1-1 Correct angle for ladders When climbing a ladder: Ensure that your body's center of gravity does not shift outside the legs of the ladder. 4

11 1 Safety Precautions To minimize the risk of falling, steady your balance on the ladder before performing any operation. Do not climb higher than the fourth rung from the top. To climb onto a roof, ensure that the ladder top is at least one meter higher than the roofline, as shown in Figure 1-2. Figure 1-2 One meter higher than the roofline Drilling Holes Moving Heavy Objects Do not drill holes into a cabinet without permission. Non-standard drilling may affect the electromagnetic shielding of the cabinet and damage interior cables. Metal shards generated during drilling may short-circuit circuit boards if they get into the cabinet. Before drilling holes into a cabinet, remove interior cables. Wear goggles and protective gloves when drilling holes. After drilling, clean up metal shards immediately. Be cautious to prevent injury when moving heavy objects. Wear protective gloves when moving heavy objects. 5

12 2 Overview 2 Overview 2.1 Introduction The TP48600B-N20B1 is an indoor telecom power system that converts AC power into stable DC power and supplies power to and backs up power for 48 V communications equipment with a maximum output current of 600 A. Figure 2-1 shows the exterior of the TP48600B-N20B1. 6

13 2 Overview Figure 2-1 Cabinet exterior 2.2 Features Wide range of AC input voltage from 85 V AC to 300 V AC Comprehensive battery management Comprehensive AC and DC surge protection design One fast Ethernet (FE) port and one RS485/RS232 port for network connections Huawei network management system (NMS) protocol and telecom protocol for communicating with HUAWEI Network Ecosystem (NetEco), M2000, and a third-party NMS; remote management and unattended operation A liquid crystal display (LCD) for display and buttons for user operations. A web user interface (WebUI) for user operations. Multiple display languages, such as English, Chinese, Spanish, Portuguese, Italian, French, and Russian Hot-swappable rectifiers and site monitoring unit (SMU) Rectifier power factor (PF) of 0.99 High-efficiency rectifier with a maximum efficiency of 96%, and standard-efficiency rectifier with a maximum efficiency of 94% 7

14 2 Overview 2.3 Working Principle Figure 2-2 shows the working principle of the power system. AC power enters rectifiers through the AC power distribution unit (PDU). Rectifiers convert the input AC power into 48 V DC power, and then the DC PDU supplies power to multiple routes of loads. If the AC power is normal, rectifiers power DC loads and charge batteries. If the AC power fails, rectifiers stop working and batteries start to power DC loads. After the AC power resumes, rectifiers power DC loads again and recharge batteries. The SMU monitors the operating status of each component in the power system in real time and performs appropriate intelligent control operations. If any abnormal cases occur, the SMU reports the alarm signals. Figure 2-2 Working principle of the power system 2.4 System Configurations Table 2-1 System configurations Item System Configurations PDU AC power distribution: AC input circuit breaker DC power distribution: battery low voltage disconnection (BLVD) circuit breaker, load low voltage disconnection (LLVD) circuit breaker and fuse, and battery fuse 8

15 2 Overview Item AC input system SMU User interface module (UIM) Rectifier Communications expansion module Battery AC SPD DC SPD Sensor System Configurations 220/380 V AC three-phase four-wire, compatible with 220 V AC three-phase three-wire SMU02B UIM02C A maximum of 12 R4850G2 or R4850N2 rectifiers A maximum of two NIM01Cs A maximum of three 150 Ah battery strings Nominal lightning strike discharge current: 20 ka (8/20 µs); maximum lightning strike discharge current: 40 ka (8/20 µs) Differential mode: 10 ka (8/20 μs); common mode: 20 ka (8/20 μs) One battery temperature sensor (mandatory) 9

16 3 Components 3 Components 3.1 Interior Figure 3-1 Cabinet interior 10

17 3 Components (1) Battery switch (2) Battery fuses (3) SMU (4) Space for the communications expansion module (5) Space for rectifiers (6) Space for batteries (7) RTN+ busbar (8) Load low voltage disconnection (LLVD) circuit breakers and fuses (10) AC SPD (11) AC input circuit breakers and terminals (9) Ground bar (12) Battery low voltage disconnection (BLVD) circuit breakers (13) User interface module (UIM) 3.2 PDU The TP48600B-N20B1 uses AC and DC PDUs. Table 3-1 lists PDU specifications. Table 3-1 TP48600B-N20B1 PDU specifications Item AC power distribution AC input circuit breaker AC input system Power Distribution Specifications One 3-pole 125 A circuit breaker 220/380 V AC three-phase four-wire, compatible with 220 V AC three-phase three-wire DC power distribution Load route BLVD: two 63 A circuit breakers, two 32 A circuit breakers, and two 10 A circuit breakers LLVD: two 63 A circuit breakers, six 32 A circuit breakers, and two 10 A circuit breakers LLVD: four 160 A fuses Battery route Four 250 A fuses 3.3 Rectifier Rectifiers convert AC input into stable DC output. 11

18 3 Components Figure 3-2 Rectifier (1) Power indicator (2) Alarm indicator (3) Fault indicator (4) Locking latch (5) Handle Table 3-2 Rectifier indicators Indicator Color Status Description Power indicator Green Steady on The rectifier has an AC power input. Off The rectifier has no AC power input. The rectifier is faulty. Blinking at 0.5 Hz Blinking at 4 Hz The rectifier is being queried. The rectifier is loading an application program. Alarm indicator Yellow Off No alarm is generated. Steady on The rectifier generates an alarm for power limiting due to ambient overtemperature. The rectifier generates an alarm for shutdown due to ambient overtemperature or undertemperature. The rectifier protects against AC input overvoltage or undervoltage. The rectifier is hibernating. Blinking at 0.5 Hz The communication between the rectifier and the SMU is interrupted. Fault indicator Red Off The rectifier is running properly. Steady on The rectifier locks out due to output overvoltage. The rectifier has no output due to an internal fault. 12

19 3 Components 3.4 SMU02B Appearance Figure 3-3 shows an SMU02B. Figure 3-3 SMU02B appearance Panel Figure 3-4 shows an SMU02B panel. Figure 3-4 SMU02B panel (1) Run indicator (2) Minor alarm indicator (3) Major alarm indicator (4) Buttons (5) USB port (reserved, the port is protected by a security mechanism.) (6) RS485/RS232 port (7) Handle (8) Locking latch (9) FE port (10) Liquid crystal display (LCD) 13

20 3 Components Indicators Table 3-3 describes the indicators on the SMU02B panel. Table 3-3 SMU02B indicator description Name Color Status Description Run indicator Green Off The SMU is faulty or has no DC input. Blinking at 0.5 Hz Blinking at 4 Hz The SMU is running properly and communicating with the host properly. The SMU is running properly but is not communicating with the host properly. Minor alarm indicator Yellow Off The SMU does not generate any minor alarms. Steady on The SMU generates a minor alarm. Major alarm indicator Red Off No critical or major alarm is generated. Steady on A critical or major alarm is generated. Buttons Table 3-4 describes the buttons on the SMU02B panel. Table 3-4 SMU02B button description Button Name Description Up Down Turns to the previous menu or sets parameter values. When setting parameter values, you can hold down quickly adjust values. Turns to the next menu or sets parameter values. When setting parameter values, you can hold down quickly adjust values. to to Back Returns to the previous menu without saving the settings. Confirm Enters the main menu from the standby screen. Enters a submenu from the main menu. Saves the menu settings. Communication Ports Table 3-5 describes the communication ports on the SMU02B panel. 14

21 3 Components Table 3-5 SMU02B communication port description Communication Port Communications Parameter Communications Protocol Function FE port 10/100 M auto-adaptation HTTPS, NetEco network management system (NMS), and SNMP protocols Connects to an upper-level NMS. RS485/RS232 port Baud rate: 9600 bit/s, bit/s NetEco NMS protocol, YDN protocol Connects to an upper-level device such as BBU. NOTE All the ports mentioned are protected by a security mechanism. Figure 3-5 Pins in the FE port and RS485/RS232 port Table 3-6 Pin definitions for the FE port Pin Signal Description 1 TX+ Sends data over FE. 2 TX- 3 RX+ Receives data over FE. 6 RX- 4, 5, 7, and 8 None N/A. Table 3-7 Pin definitions for the RS485/RS232 port Pin Signal Description 1 TX+ Sends data over RS TX- 4 RX+ Receives data over RS

22 3 Components Pin Signal Description 5 RX- 3 RX232 Receives data over RS TX232 Sends data over RS PGND Connects to the ground. 8 None N/A. 3.5 UIM02C Panel The user interface module (UIM02C) supports eight dry contact outputs, nine dry contact inputs (including six universal dry contact inputs, one smoke sensor input, one water sensor input, and one door status sensor input), and four analog parameter inputs (including one ambient temperature and humidity input, two ambient temperature inputs, and one battery temperature input). Figure 3-6 shows a UIM02C panel. Figure 3-6 UIM02C panel Ports Table 3-8 UIM02C ports Port Type Silk Screen Description Sensor ports TEM-HUM Ambient temperature and humidity sensor WATER Water sensor TEMP1 Ambient temperature sensor 1 TEMP2 Ambient temperature sensor 2 GATE SMOKE BTEMP Door status sensor Smoke sensor Battery temperature sensor 16

23 3 Components Port Type Silk Screen Description Dry contact input ports Dry contact output ports DIN1 DIN2 DIN3 DIN4 DIN5 DIN6 ALM1 ALM2 ALM3 ALM4 ALM5 ALM6 ALM7 ALM8 NOTE For the associations between the dry contact input ports and alarms, see the appendix. NOTE For the associations between the dry contact output ports and alarms, see the appendix. Communications port COM RS485 port Communication Port Table 3-9 COM communication port description Communication Port Communications Parameter Communications Protocol Function COM port Baud rate: 9600 bit/s, bit/s M/S and Modbus protocol Connects to lower-level devices such as the battery voltage detector, DC Air Conditioner. NOTE The COM port supports the security mechanism. 17

24 3 Components Figure 3-7 Pins in the COM port Table 3-10 Pin definitions for the COM port Pin Signal Description 1 RX+ Receives data over RS RX- 4 TX+ Sends data over RS TX- 6 PGND Connects to the ground. 3, 7, 8 None N/A Pins Figure 3-8 shows the pin numbers of the sensor ports. Table 3-11 defines the pins. Figure 3-8 UIM02C pin numbers 18

25 3 Components Table 3-11 UIM02C pin definitions Silkscreen No. Pin Definitions TEM-HUM 1 12 V 2 ENV_TEMP 3 12 V 4 ENV_HUM WATER 1 12 V 2 WATER 3 GND 4 Not defined TEMP1 1 GND 2 TEMP1 TEMP2 1 GND 2 TEMP2 GATE 1 GATE+ 2 GATE- SMOKE 1 SMOKE 2 12 V BTEMP 1 GND 2 BTEMP 3.6 (Optional) Communications Expansion Module NIM01C Panel Figure 3-9 shows a NIM01C panel. 19

26 3 Components Figure 3-9 NIM01C Panel (1) 3G indicator (unavailable if the module does not provide 3G functions) (4) ANT communications port (unavailable if the module does not provide 3G functions) (2) Alarm indicator (5) COM1 port (7) COM3/CAN port (8) COM4 port (3) Run indicator (6) COM2 port (9) Handle Indicators Table 3-12 describes the indicators on the NIM01C panel. Table 3-12 Indicator description Indicator Color Status Description 3G indicator Green Steady on The dial-up connection is in the data service state. Blinking at a period of 2s (on for 0.1s and then off for 1.9s) Blinking at a period of 2s (on for 0.1s, off for 0.1s, on for 0.1s and then off for 1.7s) The network has been registered. A network is in search, or no network is connected. Alarm indicator Run indicator Red Off No alarm is generated. Steady on An alarm is generated. Green Off The NIM01C is not running because it is faulty or has no DC input. Blinking at 0.5 Hz Blinking at 4 Hz The NIM01C is running and communicating with the host properly. The NIM01C is running properly, but fails to communicate with the host. 20

27 3 Components Communications Ports The NIM01C provides four communications ports, which are described in Table Table 3-13 Communications port description Communications Port Communications Parameter Description COM1 port COM2 port Baud rate: 9600 bit/s, 19,200 bit/s, or 115,200 bit/s Baud rate: 9600 bit/s, 19,200 bit/s, or 115,200 bit/s Supports master/slave protocols and Modbus. Supplies 12 V power. Supports master/slave protocols and Modbus. Supplies 12 V power. COM3/CAN port Baud rate: 9600 bit/s COM3: Supports master/slave protocols and Modbus. CAN: Supports CAN protocol. COM4 port Baud rate: 9600 bit/s, 19,200 bit/s, or 115,200 bit/s Supports Modbus. Figure 3-10 Pins in the COM1, COM2, and COM3 ports Table 3-14 Description for the pins in the COM1 and COM2 ports Pin Signal Description 1 RS485+ RS485 data + 2 RS485 RS485 data V Supply power 4 RS485+ RS485 data + 5 RS485 RS485 data - 6 Left blank N/A 7 Left blank N/A 8 GND Grounded 21

28 3 Components Table 3-15 Description for the COM3/CAN port pins Pin Signal Description 1 RX+ Receives data over RS RX 3 Left blank N/A 4 TX+ Sends data over RS TX 6 GND Grounded 7 CANH CAN data + 8 CANL CAN data - Table 3-16 Description for the COM4 port pins Silk Screen Signal Description R+ RS485+ RS485 data + R RS485 RS485 data Battery Temperature Sensor Figure 3-11 Battery temperature sensor 22

29 4 Maintenance 4 Maintenance 4.1 Routine Maintenance Routine maintenance is required periodically based on the site requirements. The recommended maintenance interval is six months. If any fault is detected, rectify it in time. Table 4-1 Routine maintenance checklist Maintenance Task Maintenance Item Check Whether Check Method Repair When Measures Cabinet door lock The door lock is damaged. Observing and using the lock. The door lock is too damaged to use. Replace the door lock. Electrical specifications Preventive maintenance inspection (PMI) The output voltage is normal. The fault indicator is normal and the LCD displays an alarm. Using a multimeter. Observing the indicators and the LCD. The output voltage exceeds the threshold. An alarm is generated. For details, see Rectifying Common Faults. Appearance The paint or electroplated coating on the cabinet flakes off or has scratches. Observing the appearance. The surface is damaged or distorted. Repaint or repair the shell. Grounding The ground point properly connects to the ground bar in the equipment room. Observing the grounding and using a screwdriver or wrench. The cable connecting the ground point and the ground bar in the equipment room is damaged or loose. Secure or replace the cable. 23

30 4 Maintenance 4.2 Rectifying Common Faults AC Failure Possible Causes The AC input power cable is faulty. The AC input circuit breaker is OFF. The mains grid is faulty. Measures 1. Check whether the AC input cable is loose. If yes, secure the AC input cable. 2. Check whether the AC input circuit breaker is OFF. If yes, handle the back-end circuit failure and then switch on the circuit breaker. 3. Check whether the AC input voltage is lower than 50 V AC. If yes, handle the mains grid fault AC Over Volt Possible Causes The AC overvoltage alarm threshold is not set properly on the SMU. The power grid is faulty. Measures 1. Check whether the AC overvoltage alarm threshold is properly set. If no, adjust it to a proper value. 2. Check whether the AC input voltage exceeds the AC overvoltage alarm threshold (280 V AC by default). If yes, handle the AC input fault AC Under Volt Possible Causes The AC undervoltage alarm threshold is not set properly on the SMU. The power grid is faulty. Measures 1. Check whether the AC undervoltage alarm threshold is properly set. If no, adjust it to a proper value. 2. Check whether the AC input voltage is below the AC undervoltage alarm threshold (180 V AC by default). If yes, handle the AC input fault Phase A/B/C Failure Possible Causes The AC input power cable is faulty. 24

31 4 Maintenance The rectifier is in poor contact. The monitoring unit is faulty. Measures 1. Check whether the AC input power cable is correctly and securely installed. If no, reinstall the cable. If the insulation layer deteriorates, replace the cable. 2. Check whether a short circuit occurs in the AC input power cable or the insulation layer is damaged. If yes, replace the cable. 3. If the AC input is normal and the Alarm indicators on certain rectifiers are steady yellow, reinstall the rectifiers. 4. If the alarm persists, replace the monitoring unit DC Over Volt Possible Causes The DC overvoltage alarm threshold is not set properly on the SMU. The power system voltage is set too high in manual mode. Rectifiers are faulty. Measures 1. Check whether the DC overvoltage alarm threshold (58 V DC by default) is properly set. If no, adjust it to a proper value. 2. Check whether the system voltage is set too high in manual mode. If yes, confirm the reason and adjust the voltage to normal after the operation. 3. Remove the rectifiers one by one and check whether the alarm is cleared. If the alarm still exists, reinstall the rectifier. If the alarm is cleared, replace the rectifier DC Under Volt Possible Causes An AC power failure occurs. The DC undervoltage alarm threshold is not set properly on the SMU. The system configuration is not proper. The power system voltage is set too low in manual mode. Rectifiers are faulty. Measures 1. Check whether an AC power failure occurs. If yes, resume the AC power supply. 2. Check whether the DC undervoltage alarm threshold (45 V DC by default) is properly set. If no, adjust it to a proper value. 3. Check whether the load current is greater than the current power system capacity. If yes, expand the power system capacity or reduce the load power. 4. Check whether the system voltage is set too low in manual mode. If yes, confirm the reason and adjust the voltage to a proper value after the operation. 25

32 4 Maintenance 5. Check whether the power system capacity is insufficient for the loads due to rectifier failures. If yes, replace the faulty rectifier Batt Chg. Overcur. Possible Causes The rectifier communication is interrupted. Poor contact of the SMU. The SMU is faulty. Measures 1. Check whether an alarm is generated for rectifier communication interruption. If yes, remove the rectifier and reinstall it to check whether the alarm is cleared. If the alarm still exists, replace the rectifier. 2. Remove the SMU and reinstall it to check whether the alarm is cleared. If the alarm still exists, replace the SMU LLVD Disconnected Possible Causes An AC power failure occurs. Loads are manually disconnected. The load disconnection voltage is set too high on the SMU. Rectifiers are faulty. The system configuration is not proper. Measures 1. Check whether an AC power failure occurs. If yes, resume the AC power supply. 2. Check whether loads are manually disconnected. If yes, confirm the reason of the manual disconnection, and reconnect the loads after the operation. 3. Check whether the load disconnection voltage (44 V DC by default) is set too high on the SMU. If yes, adjust it to a proper value. 4. Check whether the power system capacity is insufficient for the loads due to rectifier failures. If yes, replace the faulty rectifier. 5. Check whether the load current is greater than the current power system capacity. If yes, expand the power system capacity or reduce the load power BLVD Disconnected Possible Causes An AC power failure occurs. Batteries are manually disconnected. The battery disconnection voltage is set too high on the SMU. Rectifiers are faulty. The system configuration is not proper. 26

33 Measures 1. Check whether an AC power failure occurs. If yes, resume the AC power supply. 4 Maintenance 2. Check whether batteries are manually disconnected. If yes, confirm the reason of the manual disconnection, and reconnect the batteries after the operation. 3. Check whether the battery disconnection voltage (43.2 V DC by default) is set too high on the SMU. If yes, adjust it to a proper value. 4. Check whether the power system capacity is insufficient for the loads due to rectifier failures. If yes, replace the faulty rectifier. 5. Check whether the load current is greater than the current power system capacity. If yes, expand the power system capacity or reduce the load power Battery Fuse Break Possible Causes The battery fuse detection cable is disconnected. The battery circuit breaker trips or battery fuse is blown. Measures 1. Check whether the battery fuse detection cable is disconnected. If it is disconnected, reconnect it. 2. Check whether the battery circuit breaker is disconnected or the battery fuse is blown. If the battery breaker is disconnected or the battery fuse is blown, rectify the battery loop fault and then switch on the circuit breaker or replace the fuse High Amb. Temp. This alarm is generated only for the power system that has ambient temperature sensors installed. Possible Causes The ambient overtemperature alarm threshold is not set properly on the SMU. The indoor temperature control system is faulty. The ambient temperature sensor is faulty. Measures 1. Check whether the ambient temperature alarm threshold (55 C by default) is properly set on the SMU. If no, adjust it based on site requirements. 2. Check whether the indoor temperature control system is faulty. If yes, rectify the fault. The alarm is cleared when the cabinet temperature falls within the allowed range. 3. Check whether the ambient temperature sensor is faulty. If yes, replace the temperature sensor Low Amb. Temp. This alarm is generated only for the power system that has ambient temperature sensors installed. 27

34 4 Maintenance Possible Causes The ambient undertemperature alarm threshold is not set properly on the SMU. The indoor temperature control system is faulty. The ambient temperature sensor is faulty. Measures 1. Check whether the ambient undertemperature alarm threshold (-20 C by default) is properly set on the SMU. If no, adjust it based on site requirements. 2. Check whether the indoor temperature control system is faulty. If yes, rectify the fault. The alarm is cleared when the cabinet temperature falls within the allowed range. 3. Check whether the ambient temperature sensor is faulty. If yes, replace the ambient temperature sensor High Amb. Humi This alarm is generated only for the power system that has humidity sensors installed. Possible Causes The ambient overhumidity alarm threshold is not set properly on the SMU. The humidity is too high in the cabinet where the humidity sensor is located. The humidity sensor is faulty. Measures 1. Check whether the ambient overhumidity alarm threshold (95%RH by default) is properly set on the SMU. If no, adjust it based on site requirements. 2. Check whether the humidity is too high in the cabinet. If yes, wipe the water with dry cotton or other tools and rectify the fault. 3. Check whether the humidity sensor is faulty. If yes, replace the humidity sensor Low Amb. Humi. This alarm is generated only for the power system that has humidity sensors installed. Possible Causes The ambient underhumidity alarm threshold is not properly set on the SMU. The humidity is too low in the cabinet where the humidity sensor is located. The humidity sensor is faulty. Measures 1. Check whether the ambient underhumidity alarm threshold (5% RH by default) is properly set on the SMU. If no, adjust it based on site requirements. 2. Check whether the cabinet humidity is too low. If yes, adjust the cabinet humidity. The alarm is cleared when the humidity falls within the allowed range. 3. Check whether the humidity sensor is faulty. If yes, replace the humidity sensor. 28

35 4 Maintenance Batt. High Temp. This alarm is generated only for the power system that has battery temperature sensor installed. Possible Causes The battery overtemperature alarm threshold is not set properly on the SMU. The ambient temperature of batteries is too high. The battery temperature sensor is faulty. Measures 1. Check whether the battery overtemperature alarm threshold (50 C by default) is properly set. If no, adjust it to a proper value. 2. Check whether the indoor temperature control system is faulty. If yes, rectify the fault. The alarm is cleared when the battery temperature falls within the allowed range. 3. Check whether the battery temperature sensor is faulty. If yes, replace the temperature sensor Batt. Low Temp. This alarm is generated only for the power system that has battery temperature sensor installed. Possible Causes The battery undertemperature alarm threshold is not set properly on the SMU. The ambient temperature of batteries is too low. The battery temperature sensor is faulty. Measures 1. Check whether the battery undertemperature alarm threshold (-10 C by default) is properly set. If no, adjust it to a proper value. 2. Check whether the indoor temperature control system is faulty. If yes, rectify the fault. The alarm is cleared when the battery temperature falls within the allowed range. 3. Check whether the battery temperature sensor is faulty. If yes, replace the temperature sensor Rectifier Missing Possible Causes Certain rectifiers are not powered on. The rectifier is faulty. The subrack or slot connector is faulty. The monitoring unit is faulty. 29

36 Measures 4 Maintenance 1. Check whether the rectifier circuit breakers corresponding to undetected rectifiers are ON. If no, switch them on. 2. Check whether the rectifier is removed. If yes, find the cause and reinstall it. 3. Replace the rectifier if it is faulty. 4. Check whether certain rectifiers in the rectifier subrack do not work properly. If yes, remove the rectifiers that do not work and check whether their slot connectors are damaged or deformed. If yes, repair or replace the subrack or slot connectors. 5. If the alarm persists after the preceding measures are taken and the monitoring unit is restarted, replace the monitoring unit Rect Fault Possible Causes The rectifier is in poor contact. The rectifier is faulty. Measures 1. Check the Fault indicator on the rectifier panel. If it is steady red, remove the rectifier, and then reinstall it after the indicator turns off. 2. If the alarm still exists, replace the rectifier Rect Protection Possible Causes The rectifier input voltage is too high. The rectifier input voltage is too low. The ambient temperature is too high. The rectifier is abnormal. Measures 1. Check whether the AC input voltage exceeds the upper threshold of the rectifier working voltage. If yes, rectify the power supply fault and then resume the power supply. 2. Check whether the AC input voltage is below the lower threshold of the rectifier working voltage. If yes, rectify the power supply fault and then resume the power supply. 3. Check whether the ambient temperature is higher than the normal operating temperature of the rectifier. If yes, check and rectify the temperature unit fault. 4. Remove the rectifier that generates the alarm and reinstall it after the indicator turns off. If the alarm still exists, replace the rectifier Rect Comm Fault Possible Causes The rectifier is removed. The rectifier is in poor contact. 30

37 4 Maintenance The rectifier is faulty. Measures 1. Check whether the rectifier is removed. If yes, reinstall it. 2. If the rectifier is in position, remove the rectifier and reinstall it. 3. If the alarm still exists, replace the rectifier Load Fuse Break Possible Causes The load circuit breaker trips or fuse is blown. The load circuit breaker or fuse detection cable is disconnected. Measures 1. Check whether the load circuit breaker trips or fuse is blown. If yes, rectify the back-end circuit fault and then switch on the circuit breaker or replace the fuse. 2. Check whether the load circuit breaker or fuse detection cable is disconnected. If yes, reconnect the cable AC SPD Alarm Possible Causes The AC SPD is faulty. The AC SPD detection cable is disconnected. Measures 1. Check whether the AC SPD indication window turns red. If yes, replace the SPD. 2. Check whether the AC SPD detection cable is disconnected. If yes, reconnect the cable DC SPD Alarm Possible Causes The DC SPD detection cable is disconnected. The DC SPD is faulty. Measures 1. Check whether the DC SPD detection cable is disconnected. If yes, reconnect the cable. 2. Check whether the DC SPD detection cable is disconnected. If no, replace the DC SPD. 31

38 4 Maintenance 4.3 Identifying Component Faults Identifying AC SPD Faults Check the color of the AC SPD indication window. Green indicates that the AC SPD is normal. Red indicates the AC SPD is faulty Identifying Circuit Breaker Faults The following lists main circuit breaker faults: The circuit breaker cannot be switched to ON/OFF after the short circuit fault for its end circuit is rectified. When the circuit breaker is switched to ON and its input voltage is normal, the voltage between the two ends of the circuit breaker exceeds 1 V. The input voltage is normal, but the resistance between both ends of the circuit breaker is less than 1 kω when the circuit breaker is OFF Identifying Rectifier Faults If any of the following occurs, the rectifier is faulty: The AC input and slot connector are normal, but the Fault indicator (red) is steady on or all indicators are off. The slot connector and SMU are normal, but the Alarm indicator (yellow) still blinks after the rectifier is reseated. The AC input and SMU are normal, but the SMU cannot control the rectifier Identifying SMU Faults The following are the main symptoms of SMU faults: The DC output is normal while the green indicator on the SMU is off. The SMU breaks down or cannot be started. Its LCD has abnormal display or buttons cannot be operated. With the alarm reporting enabled, the SMU does not report alarms when the power system is faulty. The SMU reports an alarm while the power system does not experience the fault. The SMU fails to communicate with the connected lower-level devices while the communications cables are correctly connected. Communication between the SMU and all rectifiers fails while both the rectifiers and the communications cables are normal. The SMU cannot monitor AC or DC power distribution when communications cables are intact and AC and DC power distribution is normal. Parameters cannot be set or running information cannot be viewed on the SMU. 4.4 Parts Replacement 32

39 4 Maintenance Ensure that loads are powered on during replacement. For example, keep the circuit breakers for primary loads ON, and do not disconnect both the battery input and AC input from the loads. Seek the customer's prior consent if load disconnection is required. Rectifiers and the SMU are hot-swappable Replacing a Rectifier Prerequisites Prepare an ESD wrist strap, a pair of protective gloves, an ESD box or bag, and the cabinet door key. Check that the new rectifier is intact. Ensure that the AC input to the power system is normal and batteries are in float charging mode. Procedure Step 1 Put on protective gloves. Step 2 Push the locking latch on the right of the rectifier panel upwards. To avoid burns, exercise caution when removing a rectifier because it is hot during operation. Step 3 Gently draw the handle outwards, and then remove the rectifier from the slot, as shown in Figure 4-1. Figure 4-1 Removing the rectifier Step 4 Push the locking latch on the new rectifier upwards, and pull out the handle. Step 5 Place the new rectifier in the appropriate slot. Step 6 Slide the new rectifier gently along the guide rail, and push the locking latch downwards, as shown in Figure

40 4 Maintenance Figure 4-2 Installing a new rectifier Step 7 Take off protective gloves. ----End Follow-up Procedure Replacing an SMU Pack the removed component, and return it to Huawei local warehouse. Prerequisites You have obtained the cabinet door key. The new SMU is intact. Procedure Step 1 Push the locking latch towards the left. Step 2 Pull the handle outwards to remove the SMU, as shown in Figure 4-3. Figure 4-3 Removing an SMU Step 3 Insert a new SMU into the subrack, push the locking latch towards the left, and pull out the handle. Step 4 Slide the new SMU into the subrack slowly along the guide rail, pull in the handle, and then push the locking latch towards the right. Step 5 Reset parameters on the SMU. 34

41 4 Maintenance Figure 4-4 Installing an SMU ----End Follow-up Procedure Pack the removed component, and return it to Huawei local warehouse Replacing an AC SPD Module Prerequisites You have obtained an ESD wrist strap or a pair of ESD gloves, an ESD box or bag, and the cabinet door key. The new AC SPD module is intact and the indication window is green. Do not replace an AC SPD module during a thunderstorm. Procedure Step 1 Connect the ground cable to the ESD wrist strap and wear the ESD wrist strap and ESD gloves. Step 2 Hold down the faulty AC SPD module and pull it out, as shown in Figure 4-5. Step 3 Install a new AC SPD module, as shown in Figure

42 4 Maintenance Figure 4-5 Replacing an AC SPD module Step 4 Disconnect the ground cable from the ESD wrist strap and take off the ESD wrist strap and ESD gloves. ----End Follow-up Procedure Check that the alarm for the AC SPD is cleared Replacing a Circuit Breaker Prerequisites Procedure Before replacing an AC circuit breaker, switch off the upstream input circuit breaker. You have obtained the cabinet door key, insulation tape, and tool kit. The new circuit breaker is intact and has the same specifications as the old one. Step 1 Switch off the circuit breaker that is to be replaced. Step 2 Record the positions where the output cable and signal cable terminals connect to the circuit breaker. Step 3 Loosen the screw that secures the upper port of the circuit breaker by using a Phillips screwdriver, and remove the output power cable and signal cable terminals. Wrap the cable and terminals by using the insulation tape to prevent hazards. 36

43 4 Maintenance Step 4 Loosen the screw that secures the lower port of the circuit breaker by using a Phillips screwdriver, and loosen the buckle at the circuit breaker base by using an insulated flat-head screwdriver. Step 5 Remove the circuit breaker from the guide rail. Figure 4-6 shows how to remove the circuit breaker. Figure 4-6 Removing a circuit breaker Step 6 Switch off the new circuit breaker. Press the buckle at the circuit breaker base by using an insulated flat-head screwdriver and install the new circuit breaker. Then loosen the buckle and secure the circuit breaker to the guide rail. Step 7 Tighten the screw that secures the lower port of the circuit breaker. Step 8 Remove the insulation tape from the output power cable and signal cable terminals. Then connect the output power cable and signal cable terminals to the upper port of the circuit breaker and tighten the screw. Step 9 Switch on the circuit breaker. Figure 4-7 shows how to install the new circuit breaker. Figure 4-7 Installing a circuit breaker ----End 37

44 4 Maintenance Replacing the PCB of UIM02C Prerequisites You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, the cabinet door key, and tools. The new printed circuit board (PCB) of UIM02C is intact. Procedure Step 1 Connect the ground cable to the ESD wrist strap, and wear the ESD wrist strap and ESD gloves. Step 2 Record the positions on the UIM02C panel for connecting signal cables and disconnect the cables. Step 3 Unscrew the UIM02C panel and remove the UIM02C, as shown in Figure 4-8. Figure 4-8 Taking out the UIM02C Step 4 Record the positions where the PCB connects to all the cables, and then disconnect the cables. Step 5 Remove the PCB. 38

45 4 Maintenance Figure 4-9 Removing the PCB of UIM02C Step 6 Take out the new PCB and install it. Step 7 Connect all cables back to the new PCB based on the record made previously. Step 8 Push in the UIM02C and tighten the screws. Step 9 Reconnect signal cables to the UIM02C panel based on the records made previously. Step 10 Disconnect the ground cable from the ESD wrist strap, and remove the ESD wrist strap or ESD gloves. ----End Follow-up Procedure Pack the removed component, and return it to Huawei local warehouse Replacing a Battery Temperature Sensor Prerequisites You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, the cabinet door key, and a tool kit. The new battery temperature sensor is intact. Procedure Step 1 Connect the ground cable to the ESD wrist strap, and put on the ESD wrist strap and ESD gloves. Step 2 Remove the battery temperature sensor cable from the UIM, as shown in Figure

46 4 Maintenance Figure 4-10 Removing a battery temperature sensor cable Step 3 Cut off the cable tie of the battery temperature sensor and remove the sensor. Figure 4-11 Position of a battery temperature sensor Step 4 Properly place the new battery temperature sensor and bind it securely with a cable tie. Step 5 Reconnect the battery temperature sensor cable to the UIM. Step 6 Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and ESD gloves. ----End 40

47 A Technical Specifications A Technical Specifications A.1 Environment Specifications Table A-1 Environment specifications Item Operating temperature Transport temperature Storage temperature Operating humidity Storage humidity Altitude Noise level Specifications 10ºC to +45ºC (with built-in batteries); 10ºC to +50ºC (without built-in batteries) 40ºC to +70ºC 40ºC to +70ºC 5% 95% RH (non-condensing) 5% 95% RH (non-condensing) m When the altitude ranges from 2000 m to 4000 m, the operating temperature decreases by 1ºC for each additional 200 m. Complies with YD/T Acoustic pressure level < 60 dba A.2 Electrical Specifications Table A-2 Electrical specifications Item Specifications AC input Input system 220/380 V AC three-phase four-wire, compatible with 220 V AC three-phase three-wire Input voltage Input frequency V AC Frequency range: Hz; nominal 41

48 A Technical Specifications Item Specifications Power factor Total harmonic distortion (THD) frequency: 50 Hz or 60 Hz 0.99 (rated input and full load) 10% (50% 100% load) DC output Output voltage range 42 V DC to 58 V DC AC input protection Default output voltage Output power Regulated voltage precision Ripple and noise Psophometrically weighted noise Current imbalance AC input overvoltage protection threshold AC input overvoltage recovery threshold AC input undervoltage protection threshold AC input undervoltage recovery threshold 53.5 V DC Maximum output power = Output power of a single rectifier x Number of rectifiers ±1% 200 mvp-p 2 mv ±5% (20% 100% load) > 300 V AC When the voltage is restored to 290 V AC, the output resumes. < 85 V AC When the voltage is restored to 90 V AC, the output resumes. DC output protection AC surge protection DC surge protection DC output overvoltage protection threshold 58.5 V DC to 60.5 V DC 1. If overvoltage occurs inside a rectifier, the rectifier locks out. 2. If the external voltage is greater than 63 V for more than 500 ms, the rectifier locks out. Nominal lightning strike discharge current: ±20 ka (8/20 µs); maximum lightning strike discharge current: ±40 ka (8/20 µs) Differential mode: 10 ka (8/20 μs); common mode: 20 ka (8/20 μs) Safety compliance Complies with IEC Mean time between failures (MTBF) 200,000 hours 42