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Huawei ETP4830-A1 User Manual

Huawei ETP4830-A1 User Manual

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ETP4830-A1 Embedded Power
User Manual
Issue
14
Date
2020-03-02
HUAWEI TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei ETP4830-A1

  • Page 1 ETP4830-A1 Embedded Power User Manual Issue Date 2020-03-02 HUAWEI TECHNOLOGIES CO., LTD.
  • Page 2 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"...

  • Page 3: Preface

    NOTICE is used to address practices not related to personal injury. Supplements the important information in the main text. NOTE is used to address information not related to personal Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 4 "4.2.8 Connecting the Dual-Live of IT 230 V Net or TN 208 V Net AC Input Power Cable". Issue 08 (2014-10-30) Added section "6.5 Setting Battery Parameters". Issue 07 (2014-07-18) Modified "6.5 Setting Battery Parameters". Added section "6.6 (Optional) Setting DC Parameters". Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 5 Issue 03 (2013-04-18) Modify operating temperature, input voltageand output voltage. Issue 02 (2012-12-03) Port description is modified. Issue 01 (2012-05-11) This issue is the first official release. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 6: Table Of Contents

    4.1.4 Installing a MUE02B ............................39 4.2 Installing Cables ..............................40 4.2.1 Connecting the Ground Cable ..........................40 4.2.2 (Optional) Installing Dry Contact Signal Cables ....................40 4.2.3 Connecting the Communications Cable ......................41 4.2.4 Installing Cables for MUE02B ...........................44 Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 7 7.2.3 AC Under Volt ..............................66 7.2.4 DC Over Volt ..............................67 7.2.5 DC Under Volt ..............................67 7.2.6 Amb. Over Temp ...............................67 7.2.7 Amb. Under Temp .............................68 7.2.8 Batt Over Temp ..............................68 7.2.9 Batt Under Temp ...............................69 Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 8 7.3.2 Identifying SMU Faults .............................74 7.4 Replacing Components ............................75 7.4.1 Replacing a Rectifier ............................75 7.4.2 Replacing an SMU.............................76 A Technical Specifications ....................... 78 B Preparing Terminals ......................81 C Acronyms and Abbreviations ....................82 Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 9: Safety Precautions

    The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. Huawei will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards.
  • Page 10 Before installing, operating, or maintaining a cabinet, clean up any water, ice, snow, or other sundries on the top of the cabinet to prevent sundries from falling into the cabinet when you open the cabinet door. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 11 To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telecommunication network voltage (TNV) circuits.  Do not power on the equipment before it is installed or confirmed by professionals. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 12 2. If there are multiple output ports, use the symbol near the output ports. Connect cables according to the rated power output and configuration parameter information in the instruction. 3. If there are multiple slots, use the symbol near the slot Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 13: Personnel Requirements

    1.2 Personnel Requirements  Personnel who plan to install or maintain Huawei equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations. ...
  • Page 14 When holding a board, hold its edge without touching any components. Do not touch the components with your bare hands.  Package boards with ESD packaging materials before storing or transporting them. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 15: Installation Environment Requirements

    Do not mount it on an insecure moveable object or metal object with sharp edges. Make sure that the hooks will not slide off. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 16: Mechanical Safety

    Before hoisting objects, ensure that hoisting tools are firmly secured onto a load-bearing object or wall.  Ensure that the angle formed by two hoisting cables is no more than 90 degrees, as shown in the following figure. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 17 75 degrees, as shown in the following figure. An angle rule can be used to measure the angle. When climbing a ladder, take the following precautions to reduce risks and ensure safety: Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 18 Moving Heavy Objects  Be cautious to avoid injury when moving heavy objects.  When moving the equipment by hand, wear protective gloves to prevent injuries. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 19: Battery Safety

     Dispose of waste batteries in accordance with local laws and regulations. Do not dispose of batteries as household waste. If a battery is disposed of improperly, it may explode. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 20  If permitted, disconnect the batteries in use before performing any other operations.  To avoid battery short-circuit, do not maintain batteries with power on. Flammable Gas Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 21 When the ambient temperature is lower than the lower limit of the operating temperature (charge is forbidden at 0° C), do not charge the battery. Otherwise, a short circuit would occur inside the battery.  Do not throw a lithium battery in fire. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 22 ETP4830-A1 Embedded Power User Manual 1 Safety Precautions  When maintenance is complete, return the waste lithium battery to the maintenance office. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 23: Overview

    User Manual 2 Overview Overview 2.1 Introduction The ETP4830-A1 is a box-type power system that supplies power for -48 V DC communications equipment. It uses 15 A rectifiers and provides a maximum output current of 30 A. 2.2 Features The ETP4830-A1 has the following features: ...

  • Page 24: Configuration

    One SMU01B  One SMU01C Rectifier The following rectifiers are supported:  One to two R4815G1s  One to two R4815N1s NOTE  The R4815G1 and R4815N1 can be installed together. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 25: Components

    Do not mix up the slots for installing the SMU and rectifier. Otherwise, the SMU and rectifier may be damaged. 3.2 Rectifier A rectifier converts AC input power into stable DC power. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 26  The rectifier has generated a protection shutdown alarm due to ambient overtemperature or undertemperature. AC input overvoltage or undervoltage protection has been triggered. The rectifier is in hibernation state. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 27: Smu

    The rectifier is normal. Steady on The rectifier locks out due to output overvoltage. The rectifier has no output due to an internal fault. 3.3 SMU 3.3.1 SMU01A Appearance Figure 3-3 SMU01A appearance Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 28 Blinking at 4 Hz The SMU01A runs properly but does not communicate with the host properly. Alarm indicator No critical or major alarm is generated. Steady on A critical or major alarm is generated. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 29 DB50 Port The DB50 port is connected to the sensor signal converter by using the DB50 transfer cable. The DB50 port detects analog parameters and Boolean values, and provides controlled signal outputs. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 30 Figure 3-6 DB50 port pin definitions Table 3-4 DB50 port pin definitions Signal Description Signal Description 12V+ 12 V power JK1+ Dry contact supply output Signal ground JK1- SIM1 Battery midpoint JK2+ voltage SIM2 JK2- Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 31 DOOR Door status 43~49 None sensor detector WIRE Distribution 5V_OUT 5 V power frame monitoring supply result USB Port The universal serial bus (USB) port is not used in this version. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 32 COM port used as an RS485/RS232 port. Table 3-6 Pins in the COM port (used as an FE port) Signal Description Sends data over FE. Receives data over FE. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 33 Table 3-8 Pins in the RS485/RS232 port Signal Description Sends data over RS485. Receives data over RS485. RX232 Receives data over RS232. TX232 Sends data over RS232. PGND Protective grounding. Reserved Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 34: Smu01B

    (8) Locking latch (9) Four buttons (10) Liquid crystal display (LCD) Indicators Table 3-9 Indicator description Name Color Status Description Running status Green The SMU01B is faulty or has no power Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 35 You need to log in again if no button is pressed within 8 minutes. Communications Ports The communication port is used for communication with the host and can also manage southbound equipment. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 36 Table 3-12 Pins in the RS485/RS232 port Signal Description Sends data over RS485. Receives data over RS485. RX232 Receives data over RS232. TX232 Sends data over RS232. PGND Protective grounding. Reserved Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 37: Smu01C

    (4) Dry contact output (5) Ambient temperature (6) Battery temperature ports sensor port sensor port (7) RS485/RS232 port (8) Handle (9) COM port (10) Locking latch (11) Four buttons (12) Liquid crystal display (LCD) Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 38 Saves the menu settings. NOTE  The LCD screen becomes dark if no button is pressed within 5 minutes.  You need to log in again if no button is pressed within 8 minutes. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 39 The COM ports and RS485/RS232 ports work in active/standby mode. Either of them is at work.  The RS485 and RS232 serial ports are mutually exclusive.  All the preceding ports are protected by a security mechanism. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 40: Power Monitor Interface Unit Mue02B

    Sends data over RS485. Receives data over RS485. RX232 Receives data over RS232. TX232 Sends data over RS232. PGND Protective grounding. Reserved 3.4 Power Monitor Interface Unit MUE02B Figure 3-14 Appearance Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 41 Reserved JTM1 Signal cable Digital signal, indicating the door status monitoring result +12 V SMOKE Signal cable Digital signal, indicating the smoke sensor monitoring result +12 V Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 42 Ground cable WATER +12 V Digital signal, indicating the water sensor monitoring result Signal cable Ground cable Reserved CAB_E-LABEL +5 V Electronic cabinet label Clock signal cable Data signal cable Ground cable Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 43 RS485 receive + RS485 transmit – VTEM1 4–20 mA B485_T– temperature VTEM2 NTC temperature B485_T+ RS485 transmit + 16–22 JTD1–JTD7 Reserved digital 39–40 Reserved signals 1–7 SMOKE Smoke sensor SCL_BK communication signal Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 44 ETP4830-A1 Embedded Power User Manual 3 Components Description Description Definition Definition WATER Water SCL_BK communication signal DOOR Door status 43–49 Reserved sensor WIRE Distribution 5 V_OUT 5 V power supply frame monitoring result Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 45: Installation

    Install the subrack in 19-inch rack, as shown in Figure 4-1. Figure 4-1 Installing a subrack 4.1.2 Installing an SMU Procedure Step 1 Push the locking latch towards the left, and pull out the handle. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 46: Installing A Rectifier

     The filler panel has been removed from the rectifier slot.  If the rectifier is damaged, contact your local Huawei office.  The rectifier slot presents a risk of electric shock. Do not touch the slot with your hands.

  • Page 47: Installing A Mue02B

    4.1.4 Installing a MUE02B Prerequisites If a MUE02B is configured, perform the following steps to install it. Procedure Step 1 Install the MUE02B in 19-inch rack. Figure 4-4 Installing a MUE02B ----End Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 48: Installing Cables

    Step 1 Press the contact plate using a flat-head screwdriver to flip the metal spring inside each dry contact. Step 2 Connect the signal cables to the corresponding dry contacts. Step 3 Remove the flat-head screwdriver and check that the signal cables are connected securely. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 49: Connecting The Communications Cable

    Power and environment monitoring device Connect a communications cable to the COM port on the SMU01A when you use the NetEco, or SNMP to remotely manage the power supply system, as shown in Figure 4-8. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 50 (2) Remote management Connecting a Communications Cable to the SMU01B Connect the COM port on the SMU01B to the corresponding serial port on the Huawei access network communications equipment using a communications cable when you use the U2000 network management system to remotely manage the power supply system, as shown in Figure 4-9.
  • Page 51 Figure 4-10 Connecting the SMU01C and the power and environment monitoring device Alarm signals of the power system can be uploaded over dry contacts. Connect dry contact signal cable to the EXT-ALM0 port on the BBU. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 52: Installing Cables For Mue02B

    4 Installation Figure 4-11 Connecting the SMU01C and the BBU (1) BBU (2) EXT-ALM0 port 4.2.4 Installing Cables for MUE02B Prerequisites If SMU01A and MUE02B are configured, perform the following steps. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 53: Connecting The Dc Output Power Cable

    Figure 4-13 Installing a signal cable for the battery temperature sensor ----End 4.2.5 Connecting the DC Output Power Cable Procedure Step 1 Cut off the two 2-pin terminals at one end of the DC output power cable. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 54: Connecting The Battery Cable

    4.2.6 Connecting the Battery Cable The method of installing the battery cable is the same as that of installing the DC output power cable. For details, see 4.2.5 Connecting the DC Output Power Cable. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 55: Connecting The 230 V Ac Single-Phase Of Tn 400 V Net Or Tt 400 V Net Input Power Cable

    Step 3 Connect the live wire (an M4 OT terminal is used for the cable) to the wiring terminal marked as L. Figure 4-17 Connecting the single-phase AC input power cable Step 4 Reinstall the protective cover. ----End Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 56: Connecting The Dual-Live Of It 230 V Net Or Tn 208 V Net Ac Input Power Cable

    Step 3 Connect the L2 wire (an M4 OT terminal is used for the cable) to the wiring terminal marked as N. Figure 4-18 Connecting the dual-live wire AC input power cable Step 4 Reinstall the protective cover. ----End Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 57: Verifying The Installation

    Check that all cables are arranged neatly and bound properly to their nearest cable ties, and are not twisted or overly bent.  Check that cable labels are properly and securely attached in the same direction. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 58: Commissioning

    If an undesired language is selected, reinstall and restart the SMU and then select the desired language. 6.3 Setting the Date and Time 6.3.1 SMU01A Set the date and time for the SMU01A as required. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 59: Smu01B And Smu01C

    6-3. If the SMU01B or SMU01C is configured, you do not need to reset the system type. Table 6-3 Setting system type Main Menu Second-Level Third-level Menu Default Value Setting Value Menu Settings Site Summary System Type Standard ETP4830 Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 60: Setting Battery Parameters

    Menu Menu Settings Batt Settings Battery String Capacity 40 Ah Battery string capacity Charge Coef 0.15 C10 Range: 0.05 C10-0.25 C10 6.6 (Optional) Setting DC Parameters Set DC parameters as required. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 61: Optional) Setting Hibernation Parameters

    Set Sleep Enable to Yes if you need to use the intelligent hibernation function of the rectifiers. Table 6-8 Hibernation parameter for the SMU01B and SMU01C Main Menu Second-Level Third-Level Default Value Setting Menu Menu Settings Rect Settings Sleep Enable Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 62: Optional) Setting Alarm Parameters

    Volt alarm as an example. Digital Alarm Digital No. 1 NOTE Take Digital No. 1 as an example. Mode High Set the parameter as required. Relay Relate AC Volt Low/High (Alarm) NOTE Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 63: Optional) Setting Communications Parameters

    6.9.1 SMU01A Set SMU01A communications parameters based on actual requirements. The SMU01A is connected to Huawei communications equipment over an RS485/RS232 port. You can set communications addresses of Huawei communications equipment on the LCD. If the SMU01A is connected to an Ethernet over a COM port, you need to set the IP address, subnet mask, and gateway on the LCD based on those assigned by customers and then perform other operations.
  • Page 64 SMU network management system (NMS) Figure 6-2 Connecting a communications cable for Huawei communications monitoring device (1) RS485/RS232 port on the SMU (2) Huawei communications monitoring device Step 3 Set host communications address and host communications baud rate on the LCD.
  • Page 65 SNMPv3 is used. After the authentication succeeds, the SMU can communicate with the NMS. Trap IP IP address and port number used for reporting alarm trap packets Trap Port Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 66 Step 3 Set IP Address, Subnet Mask, and Gateway on the SMU's LCD. Table 6-14 IP parameters Main Menu Second-Level Default Value Settings Menu Quick Settings IP Address 192.168.0.10 Set this parameter according to the address assigned by the network administrator. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 67 Step 7 Enter https://NetEco IP address: port number for NetEco login (for example, https://10.10.10.1:31943) in the address box of the browser and press Enter to go to the NetEco login page. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 68 Gateway 192.168.0.1 Set this parameter according to the address assigned by the network administrator. Step 3 Connect the network port on your PC to the FE port on the SMU. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 69 The standard encryption algorithms MD5 and DES have security risks. You are advised to use the secure encryption algorithms SHA and AES. If the SNMP version is SNMPv1 or SNMPv2c, set SNMP Port, Read Community, and Write Community, as shown in Figure 6-6. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 70 If the SNMP version is SNMPv3, set User Name, Authentication Protocol Password, and Privacy Protocol Password, as shown in Figure 6-7. Figure 6-7 SNMPv3 parameters Step 7 Set the SNMP trap destination address and trap port. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 71: Smu01B And Smu01C

    The trap IP address is the server IP address. The IP port is the alarm listening port and its default value is 162. Step 8 After obtaining the MIB file from Huawei technical support, upload the MIB libraries HUAWEI-MIB.mib and HUAWEI-SITE-MONITOR-MIB.mib to the NMS.
  • Page 72 Step 5 Observe the power system for 15 minutes. If no alarm (excluding door alarms) is generated on the LCD of the SMU during this period, the voltage and current for batteries and loads are normal. ----End Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 73: Maintenance

    Secure or replace inspection between the ground multimeter the ground point and the the ground cable. point and the ground ground bar is greater than 0.1 ohm. bar in the cabinet is normal. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 74: Rectifying Common Faults

    Check whether the AC undervoltage alarm threshold is correctly set. If not, set the threshold to the correct value. Check whether the AC input voltage is below the AC undervoltage alarm threshold (180 V AC by default). If so, handle the AC input fault. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 75: Dc Over Volt

    7.2.6 Amb. Over 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. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 76: Amb. Under Temp

    If no, adjust it to a proper value. Check whether the battery temperature controlling system is faulty. If yes, rectify the fault. The alarm is cleared when the battery temperature falls within the allowed range. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 77: Batt Under Temp

    Check whether the load circuit breaker has tripped or the load fuse has blown. If so, locate and rectify the circuit fault, and then switch on the circuit breaker or replace the fuse. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 78: Batt Loop Trip

    7.2.14 Door Alarm This alarm is generated only for the power system that has door status sensor installed. Possible Causes  The cabinet doors are open. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 79: Water Alarm

    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. If the alarm persists, replace the rectifier. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 80: Rect Protection

    Reinstall the rectifiers. If the alarm persists, replace the rectifiers. Restart the SMU. If the alarm persists, replace the SMU. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 81: Rect Comm Fault

    If the air intake or exhaust AC input overvoltage or vent is blocked, remove undervoltage. the blockage.  The rectifier is faulty.  If the AC input is abnormal, ask maintenance personnel for the mains Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 82: Identifying Smu Faults

    SMU and the host is normal. The Alarm indicator (red) is A major or critical alarm has Query the active alarm on steady on. been generated. the host or SMU LCD to Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 83: Replacing Components

    Step 2 Push the locking latch on the right side of the panel towards the left. Step 3 Gently draw the handle outwards, and then remove the rectifier from the subrack, as shown in Figure 7-1. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 84: Replacing An Smu

    Figure 7-2 Installing a rectifier Step 7 Remove the protective gloves. ----End Follow-up Procedure Pack the removed component and send it to the local Huawei warehouse. 7.4.2 Replacing an SMU Prerequisites  You have obtained an ESD wrist strap, a pair of protective gloves, an ESD box or bag.
  • Page 85 Step 5 Reset SMU parameters. Figure 7-4 Installing an SMU ----End Follow-up Procedure Pack the removed component and have it sent to the local Huawei warehouse. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 86: A Technical Specifications

    -42 V DC- -58 V DC Default output voltage -53.5 V DC Maximum output power 2000 W ≤ ± 0.6% Regulated voltage precision ≤ 200 mV (0–20 MHz) Peak-to-peak noise voltage Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 87 (criterion B)  (For the DC power port) differential mode: ± 2 kV/2 ohms; common mode: ± 2 kV/12 ohms, ± 4 kV/12 ohms (+48 V and PE are short-circuited); isolation protection Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.
  • Page 88 Maintenance mode Maintained from the front 1: This is Class A Product. In a domestic environment this product may cause radio interference; therefore, the user is required to take appropriate measures. Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 89: B Preparing Terminals

    Figure B-1 Preparing a cord end terminal (1) Cable (2) Cord end terminal (3) Crimping tool Figure B-2 Preparing an OT terminal (1) Cable (2) OT terminal (3) Heat shrink tubing (4) Hydraulic pliers (5) Heat gun Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

  • Page 90: C Acronyms And Abbreviations

    C Acronyms and Abbreviations Acronyms and Abbreviations electromagnetic compatibility International Electrotechnical Commission Internet Protocol liquid crystal display Power Distribution Unit protective earth power supply unit site monitoring unit Transmission Control Protocol Universal Serial Bus Issue 14 (2020-03-02) Copyright © Huawei Technologies Co., Ltd.

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