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UPS5000-S-1200 kVA
User Manual

4 User Interface

Issue 04 (2019-06-25)

123

User Settings

Figure 4-35

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Figure 4-36

User settings 2

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French, German,
Italian, Polish,
Portuguese,
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Swedish,
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Password

000001

password
complexity
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If the password complexity check
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Summary of Contents for UPS5000-S-1200 kVA

Page 1: ...UPS5000 S 1200 kVA User Manual Issue 04 Date 2019 06 25 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...stomer 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 ...

Page 3: ... engineers Technical support engineers System engineers Hardware installation engineers Commissioning engineers Data configuration engineers Maintenance engineers Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates an imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially h...

Page 4: ...alls attention to important information best practices and tips NOTE is used to address information not related to personal injury equipment damage and environment deterioration Change History Changes between document issues are cumulative The latest document issue contains all the changes made in earlier issues Issue 04 2019 06 25 Added the optional fan unit Issue 03 2019 04 02 Updated descriptio...

Page 5: ...n 10 2 Overview 12 2 1 Model Number Description 12 2 2 Working Principle 12 2 2 1 Conceptual Diagram 13 2 2 2 Working Modes 13 2 2 2 1 Normal Mode 13 2 2 2 2 Bypass Mode 14 2 2 2 3 Battery Mode 15 2 2 2 4 Maintenance Bypass Mode 15 2 2 2 5 ECO Mode 16 2 2 2 6 Joint Power Mode 17 2 3 Product Introduction 18 2 3 1 Appearance 18 2 3 2 Product Structure 19 2 3 3 Power Module 20 2 3 4 Bypass Module 22 ...

Page 6: ... Installation 51 3 2 1 Installing a Cabinet 51 3 2 1 1 Floor Installation 51 3 2 1 2 Channel Steel Installation 55 3 2 2 Installing Busbars 57 3 2 3 UPS Cable Connection Reference 62 3 2 4 Connecting Cables 64 3 2 5 Installing Optional Components 67 3 2 5 1 Installing a Battery Grounding Failure Detector 67 3 2 5 2 Installing the Maintenance Bypass Unit 69 3 2 5 3 Installing a Fan Unit 73 3 2 5 4 ...

Page 7: ...MD Event Shutdown and Message Sending 156 4 2 5 3 UPS Alive Check Function 157 5 Operations 160 5 1 Powering On and Starting the UPS 160 5 1 1 Powering On the UPS 160 5 1 2 Initial Startup 160 5 1 2 1 Obtaining Startup Password 161 5 1 2 2 Settings Wizard 161 5 1 3 Starting the Inverter 163 5 1 4 Powering On Loads 165 5 1 5 Optional Setting Parameters for the BCB Box 165 5 1 6 Optional Setting Par...

Page 8: ...tion Mode 179 6 Routine Maintenance 180 6 1 UPS Maintenance 180 6 1 1 Monthly Maintenance 180 6 1 2 Quarterly Maintenance 181 6 1 3 Annual Maintenance 181 6 2 Battery Maintenance 182 6 2 1 Precautions for Battery Maintenance 183 6 2 2 Monthly Maintenance 183 6 2 3 Quarterly Maintenance 184 6 2 4 Annual Maintenance 185 7 Troubleshooting 186 8 Technical Specifications 189 9 Optional TN C System Appl...

Page 9: ...e precautions and special safety instructions provided by Huawei when operating Huawei products Huawei will not be liable for any consequences that are caused due to violations regarding general safety regulations and equipment design production and usage safety standards Declaration Huawei does not take responsibilities for the following situations Operation under severe environments that are not...

Page 10: ...ace or change the devices or components including software Operation personnel must report faults or errors that might cause serious safety issues to related owners This product should be installed and used according to the installation and technical specification requirements found in this manual Otherwise the product may be damaged and the resulting product exceptions or component damage will be...

Page 11: ...nstallation rack Ensure ventilation vents are unblocked while the system is operating Before powering on the device ensure that all the screws inside it are securely tightened and will not fall off during operation After the installation remove packing materials from the equipment area Replace danger signs that have worn out or are unreadable A UPS can be used to serve resistive capacitive loads r...

Page 12: ...y to prevent electric shocks The UPS can generate high leakage currents Using a circuit breaker that has the leakage current protection function is not recommended Power Cable Do not install or remove power cables when the device is on Transient contact between the core of the power cable and the conductor may generate electric arcs or sparks which may cause fire or damage eyesight Before moving o...

Page 13: ...ESD wrist strap when touching the device or handling boards or application specific integrated circuits ASICs When holding a board hold its edge without touching any components especially chips Package boards with ESD packaging materials before storing or transporting them Figure 1 1 shows how to wear an ESD wrist strap Figure 1 1 Wearing an ESD wrist strap Liquid Prevention Do not place the produ...

Page 14: ...tor in ETSI EN 300 019 1 class 3 6 Do not expose the equipment or perform any operations in an environment with flammable or explosive gas or smoke Any operation on any electrical device in an environment that has flammable air can cause extreme danger Strictly obey the operating environmental requirements specified in related use manuals when using or storing the device Do not use the UPS in the ...

Page 15: ...ified type Otherwise the batteries may be damaged Check battery connections periodically to ensure that all screws are securely tightened Install or store batteries in clean cool and dry environments Do not decompose transform or damage batteries Otherwise battery short circuit electrolyte leakage and even personal injury may occur Preventative Measures When installing and maintaining batteries pa...

Page 16: ...r electrolyte overflow If electrolyte overflows handle the leakage immediately Electrolyte Leakage In the case of electrolyte leakage counteract and absorb the leaking electrolyte immediately When moving or handling a battery whose electrolyte leaks note that the leaking electrolyte may harm human bodies If the electrolyte leaks use the following substances to counteract and absorb the leaking ele...

Page 17: ...oned to ensure that the device does not topple No excessive tilt or jolt is allowed during the transportation and the maximum tolerance of the tilting angle during loading and unloading is 15 To avoid toppling secure the device to the pallet truck by using ropes before moving and assign persons to watch out the device during movement Move the cabinet with caution Any bumping or falling may damage ...

Page 18: ...bout Foreign Objects near UPS Equipment Installation The purpose of this note is to provide information and warnings about the potential risks of the operational integrity of an installed UPS These risks are caused by foreign objects in or near the UPS modules and relevant auxiliary equipment components These risks are particularly high if conductive materials have entered the UPS modules units or...

Page 19: ...200 kVA User Manual 1 Safety Precautions Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 11 manager to ensure that no foreign object enters the UPS modules units or relevant auxiliary equipment components ...

Page 20: ... Product category UPS power supply and distribution product UPS is short for uninterruptible power system 2 UPS family 5000 3 UPS subcategory S series 4 Output capacity 1200 kVA 5 Solution FusionPower The maximum capacity of UPS5000 S 1200 kVA FP is 1200 kVA and it is compatible with a capacity of 1100 kVA 990 kVA 880 kVA 770 kVA and 660 kVA 2 2 Working Principle indicates an input mode indicates ...

Page 21: ...lligent control Its power module consists of a rectifier inverter and DC DC converter The UPS5000 converts inputs into pure high quality sine wave outputs by using the high frequency switching technology Figure 2 2 UPS conceptual diagram 2 2 2 Working Modes 2 2 2 1 Normal Mode In normal mode the rectifier converts AC power into DC power then the inverter converts DC power into high precision AC ou...

Page 22: ... 2 Bypass Mode The UPS automatically transfers to bypass mode upon detecting power module overtemperature overload or other faults that may cause the inverter to shut down The bypass power supply is not protected by the UPS which means it may be affected by mains outage and incorrect AC voltage or frequency Figure 2 4 UPS conceptual diagram in bypass mode ...

Page 23: ...ery mode The power module obtains DC power from batteries and the power is converted into AC output by the inverter Figure 2 5 UPS conceptual diagram in battery mode 2 2 2 4 Maintenance Bypass Mode The maintenance bypass unit has been installed When the UPS works in maintenance bypass mode the current flows through the maintenance bypass instead of the power module You can maintain the circuit ins...

Page 24: ...peration ECO mode is an economical working mode which can be configured on the LCD or web user interface WebUI In ECO mode when the bypass input is within the ECO voltage and frequency ranges and other ECO power supply conditions are met the UPS works in bypass mode and the inverter is in standby state When the bypass voltage is outside the ECO voltage range the UPS transfers from bypass mode to n...

Page 25: ...r is in standby state and the power flow has reached the inverter 2 2 2 6 Joint Power Mode If the UPS works properly and the AC input power of the rectifiers is insufficient the UPS transfers to joint power mode In this case the power module obtains energy from both the mains and batteries and the energy is converted into AC outputs over the inverter Figure 2 8 Conceptual diagram in joint power mo...

Page 26: ...00 kVA User Manual 2 Overview Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 18 2 3 Product Introduction 2 3 1 Appearance Figure 2 9 UPS 1 Power Unit 1 2 Power Unit 2 3 Bypass Unit 4 Input and output Unit ...

Page 27: ...ule 3 Monitor control module 4 Power modules 5 SPD and SPD switch 6 Mains input circuit breaker 1 Q1 1 7 Mains input circuit breaker 2 Q1 2 8 Bypass input switch Q2 9 Output circuit breaker 1 Q5 1 10 Output circuit breaker 2 Q5 2 11 Filler panels 12 Bypass module 13 Bypass control module 14 System output switch Q5 Modules in each power unit are numbered in ascending order that is module 1 and modu...

Page 28: ...ut port Table 2 2 Indicator description Indicator Color Status Description Run indicator Green Steady on The system is working in inverter mode Blinking at long intervals The inverter is ready and in standby state blinking at 0 5 Hz on for 1s and off for 1s The inverter is not started blinking at 0 2 Hz on for 2 5s and off for 2 5s Blinking at short intervals The module is not configured the inver...

Page 29: ...fier FPGA software is being upgraded Fault indicator Red Steady on A critical alarm is generated for the inverter or rectifier Off There is no critical alarm for the inverter or rectifier or the rectifier FPGA software is being upgraded Functions The power module consists of a power factor correction PFC rectifier inverter and DC DC converter The power module performs AC DC or DC DC conversion on ...

Page 30: ...6 Bypass module 7 Bypass control module Table 2 3 Indicator description Indicator Color Status Description Run indicator Green Steady on The system is working in bypass mode Blinking at long intervals The bypass has no output blinking at 0 2 Hz on for 2 5s and off for 2 5s Blinking at short intervals The bypass is not configured or the DSP software is being upgraded blinking at 4 Hz on for 0 125s ...

Page 31: ...If the power module overload times out the UPS transfers to bypass mode In normal mode if both the active and standby ECMs of the bypass unit are faulty the bypass takes over power supply The system fails to run properly and transfers to bypass mode A manual operation is performed to transfer to bypass mode Specifications Dimensions H x W x D Bypass module 263 5 mm x 642 mm x 668 mm Bypass control...

Page 32: ... 1 4 Ready switch on ECM 1 5 Indicators for ECM 1 6 Parallel port 2 7 BSC port 2 8 Ready switch on ECM 2 9 Indicators for ECM 2 10 Dry contact card 11 Dry contacts 12 MDU port 13 RS485 port 14 Fast Ethernet FE port 15 COM2 port 16 COM1 port 17 Battery temperature sensor port 18 Optional card subrack cover Ports are protected by a security mechanism 2 3 5 2 ECM Appearance The control module consist...

Page 33: ...configured ALM Yellow Steady on The ECM has a minor alarm but it does not need to be replaced Off The ECM has no minor alarm or the DSP of the ECM is being upgraded FAULT Red Steady on The ECM has a critical alarm Off The ECM has no critical alarm or the DSP of the ECM is being upgraded Functions As a control interface for the entire system the ECM communicates with each module and provides a bus ...

Page 34: ... the entire UPS system Reserved Port for detecting diesel generator D G mode Connected D G mode Disconnected non D G mode Disconnected 0V Port for signal ground BCB_OL Reserved In use Controls the power unit Port for detecting the BCB box Grounded BCB box connected Disconnected BCB box not connected Grounded BCB_STA Port for monitoring the battery switch Connected battery switch ON Disconnected ba...

Page 35: ...rcuit breaker Disconnected circuit breaker ON Connected circuit breaker OFF Disconnected SWITCH STATUS_0 V Port for signal ground SWITCH STATUS_B P Port for monitoring the bypass input circuit breaker Connected circuit breaker ON Disconnected circuit breaker OFF Connected SWITCH STATUS_0 V Port for signal ground SPD Reserved Port for monitoring the system output switch Connected system output swit...

Page 36: ...n fails Dry contact signals take effect after you set them Disable unused dry contact signals on the monitoring system In a parallel system ensure that used dry contacts properly connect to each UPS The monitoring interface card provides external ports as well as monitoring and control functions for the MDU The ports include the ambient temperature and humidity sensor port iBattery port FE port ba...

Page 37: ...t to indicate critical alarms minor alarms battery mode or low battery voltage COM DO_4 NO DO_4 is used to output alarms and indicates battery mode by default It can be set to indicate critical alarms minor alarms bypass mode or low battery voltage COM Southbound communication s port 1 COM1 In use Controls the entire UPS system In use Control the power unit Connects to an ambient temperature and h...

Page 38: ...ed twisted cables If the cable length is 25 50 m the cross sectional area must be 0 5 1 5 mm2 RS485 cables and FE cables must be shielded cables Figure 2 17 and Figure 2 18 are recommended wiring methods for DO ports Figure 2 17 Wiring method 1 Figure 2 18 Wiring method 2 Figure 2 19 COM1 pins Table 2 8 COM1 pin definition Pin Description ...

Page 39: ...sue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 31 Pin Description 1 GND 2 N A 3 RS485 4 RS485 5 N A 6 12V_PORT Figure 2 20 COM2 pins Table 2 9 COM2 pin definition Pin Description 1 RS485 2 RS485 3 N A 4 RS485 5 RS485 6 GND 7 CANH0 8 CANL0 ...

Page 40: ...S485_R 6 GND 7 N A 8 N A If cables are prepared onsite follow the three methods below Connect pin 1 and pin 2 Pin 1 connects to RS485 and pin 2 connects to RS485 Connect pin 4 and pin 5 Pin 4 connects to RS485 and pin 5 connects to RS485 Connect pins 1 2 4 and 5 Twist cables to pin 1 and pin 4 into one cable and then connect it to RS485 Twist cables to pin 2 and pin 5 into one cable and then conne...

Page 41: ...resistive touchscreen It is recommended that you use your fingernails for accurate selection and quick response Figure 2 23 Touching the LCD Table 2 11 Status indicator Status Color Meaning On Red A critical alarm has been generated and the buzzer sounds continuously Yellow A minor alarm has been generated and the buzzer buzzes at 2 Hz Green The UPS is running properly or a warning has been genera...

Page 42: ...rt 3 CAN Reserved 4 RS485_1 Reserved 5 USB Host After installing the WiFi module connect the WiFi module to the UPS using the app on the mobile phone to obtain the initial startup password Insert the USB flash drive import and export the configuration file export run logs and upgrade software 6 RST Restart switch for the MDU 7 SD Reserved 8 DIP switch Implements specific functions by using the DIP...

Page 43: ...m is used to supply power to important loads such as large cloud computing centers and enterprise data centers to ensure high reliability The N bus system provides N power routes A single point of failure does not lead to a power failure and therefore the N bus system provides higher reliability than that of the single route power supply system The reliability of the N bus system is slightly lower...

Page 44: ...stem consists of one or two 1 2 MW UPS systems One of the two UPS systems is a master system and the other is a slave system This design makes the dual bus system highly reliable and suitable for loads with multiple input terminals An optional static transfer switch STS can be installed to start the bus synchronization controller BSC The UPS systems work in normal mode or bypass mode The conceptua...

Page 45: ...U8000 0630DCV8 BXA001 PDU8000 0800DCV8 BXA001 Controls the connection between battery strings and the UPS and supports overload protection short circuit protection and remote trip control PDU8000 0125 0250 0400 0630 0800 DCV8 BXA001 BCB Box User Manual BBB box PDU8000 1250DCV8 BGA001 PDU8000 2000DCV8 BGA001 Converges the energy from multiple battery strings PDU8000 0630 1250 2000 DCV8 BGA001 BBB B...

Page 46: ... can be applied to batteries UPS Ambient Temperature and Humidity Sensor User Manual Battery grounding failure detector N A Detects current leakage and generates alarms When equipped with a remote trip switch the detector protects devices and prevents the outbreak of a fire Detects battery grounding failures and generates alarms when the ground leakage current exceeds a specified value UPS Battery...

Page 47: ... water sources heat sources and flammable or explosive materials Keep the UPS away from direct sunlight dust volatile gases corrosive materials and air dense with salt particles Do not install the UPS in environments with conductive metal scraps in the air The optimal operating temperatures for valve regulated lead acid batteries VRLA batteries are 20 30 C Operating temperatures higher than 30 C s...

Page 48: ...from the rear of the cabinet for ventilation Reserve at least 200 mm from the rear of the cabinet if there are ventilation clearances reserved at the top left and right of the cabinet Reserve at least 800 mm if you need to perform operations at the rear of the cabinet If the fan unit is configured no space is reserved at the rear 3 1 2 Tools and Instruments Insulate installation tools to prevent e...

Page 49: ...oy hole saw Heat gun Diagonal pliers Crimping tools Wire stripper Electric hydraulic pliers Clamp meter Multimeter Cable tie Level instrument Polyvinyl chloride PVC insulation tape Cotton cloth Label Electrician s knife Electrostatic discharge ESD gloves Protective gloves Insulated gloves Insulation protective shoes Torque screwdriver Cable cutter Brush Flat head screwdriver 2 5 mm ...

Page 50: ...ch Table 3 1 lists only the common tools for installation and cable connection For more dedicated tools required see the corresponding component manuals Prepare tools based on site requirements 3 1 3 Preparing Power Cables and Copper Bars The UPS can generate large leakage currents A circuit breaker that provides leakage current protection is not recommended Prepare wiring copper bars based on the...

Page 51: ...i Technologies Co Ltd 43 Figure 3 2 Distances between the top copper bars of the bypass unit and input and output unit unit mm 1 The area marked by the line box is reserved for dense busway 2 No power distribution box PDB or cabling is allowed inside the area marked by the line box ...

Page 52: ...ces between top copper bars unit mm Figure 3 4 Copper bar specifications unit mm Table 3 2 Recommended cross sectional areas for power cables Item Specifications Mains input Mains input current A 2420 Bypass input Bypass input current A 2000 Output Output current A 2000 Battery input Battery nominal discharge current A 3152 ...

Page 53: ...ed The maximum battery discharge current refers to the current when forty 12 V batteries that is two hundred and forty 2 V battery cells 1 67 V cell stop discharging The battery cable specifications are selected based on 40 batteries and compatible with application scenarios with 30 50 batteries When the mains input and bypass input share a power source configure input power cables as mains input ...

Page 54: ...ream input and downstream output circuit breakers Circuit Breaker Name Specificationsa Mains input circuit breaker 2500 A 3P Bypass input circuit breaker 2500 A 3P Downstream output circuit breaker The system has a general output switch There is no need to add an external circuit breaker a recommended model when the short circuit current where the circuit breaker is located is less than 65 kA The ...

Page 55: ... UPS steady during unpacking If the UPS installation environment is in poor condition and the UPS will be stored for a long time after it is unpacked wrap the UPS with the original plastic coat to prevent dust Procedure Step 1 Use a pallet truck to transport the UPS to the installation position Step 2 Remove the UPS outer packing Step 3 Remove the bolts that secure the UPS to the pallet and remove...

Page 56: ... 6 N L1 L2 and L3 copper bars M12x45 40 U V and W copper bars M12x45 6 Top epoxy plate M8x20 3 Bottom epoxy plate M6x30 4 Top connecting plate M6x30 4 Middle connecting plate M6x30 8 Bottom connecting plate M12x45 8 Procedure Step 1 Open the front door of the bypass unit and input and output unit Step 2 Remove the rear covers from the bypass unit and input and output unit Step 3 Remove the PE N L1...

Page 57: ...i Technologies Co Ltd 49 Figure 3 7 Remove the cable terminal copper bars and epoxy plate Step 5 Remove the top middle and bottom connecting plates in sequence from the bypass unit and input and output unit Use a step ladder to remove the top connecting plates as the cabinet is high ...

Page 58: ...ss Unit and Input and Output Unit Procedure Step 1 Install the bottom middle and top connecting plates for the bypass unit and input and output unit based on screw specifications in the table Step 2 Install the removed copper bars and epoxy plate components based on their numbers by referring to screw specifications in the table Step 3 Reconnect the removed cables Step 4 Check that the bypass unit...

Page 59: ...tion Otherwise the front door will not be properly closed 3 2 1 Installing a Cabinet 3 2 1 1 Floor Installation Prerequisites Ensure that the installation floor is flat Context During delivery two power units are transported separately and the bypass unit and input output unit are transported together Procedure Step 1 Determine the cabinet installation positions on the floor based on holes in the ...

Page 60: ... Technologies Co Ltd 52 Figure 3 9 Power unit hole dimensions unit mm Figure 3 10 Dimensions for the holes for the bypass unit and input output unit unit mm Step 2 Use a hammer drill to drill holes for installing the expansion bolts and then install the expansion sleeves in the holes ...

Page 61: ... sleeves must be completely buried under the ground to properly facilitate subsequent installation Figure 3 12 Installing expansion bolts unit mm 1 Drill holes in the ground by using a hammer drill The hole depth is 52 mm to 60 mm 2 Partially tighten the expansion bolt and vertically insert it into the hole Hit the expansion bolt using a rubber mallet until the expansion sleeve is fully inserted i...

Page 62: ...right Huawei Technologies Co Ltd 54 Step 3 Remove the side panel from the bypass unit Figure 3 13 Removing the side panel from the bypass unit Step 4 Combine the power units and bypass unit and install the connecting plates in the following sequence bottom top and middle ...

Page 63: ... Installing connecting plates Step 5 Use M12x60 expansion bolts to secure the power units bypass unit and input output unit to the expansion bolt mounting holes on the floor in sequence Step 6 Install anchor baffle plates Figure 3 15 Installing anchor baffle plates End 3 2 1 2 Channel Steel Installation Prerequisites ...

Page 64: ...sitions on the channel steel based on holes in the marking off template for channel steel installation Step 2 Drill mounting holes on the channel steels using a hammer drill Step 3 Remove the side panel from the bypass unit Step 4 Combine the power units and bypass unit and install the connecting plates in the following sequence bottom top and middle Step 5 Use M12x60 common bolts to secure the po...

Page 65: ...meter high At least two persons are required to carry a busbar At least two persons are required to hold the busbar on the top of the cabinet When moving a busbar hold both ends of the busbar component It is recommended that the soft copper bar face downward Do not move the busbar upward by holding the soft copper bar Procedure Step 1 Remove the front panels and dustproof covers from the top of th...

Page 66: ...s numbered 02 and 03 secure them to the cabinet and use copper bars numbered 04 06 to connect the two busbar components Before installation remove the screws that are partially tightened from the busbar component Figure 3 20 Installing busbar component 1 Insulator The two insulators do not need to be secured with screws Step 4 Install the busbar component numbered 07 and secure it to the cabinet ...

Page 67: ...019 06 25 Copyright Huawei Technologies Co Ltd 59 Figure 3 21 Installing busbar component Step 5 Install the left sealing plate numbered 08 Figure 3 22 Installing sealing plates Step 6 Install the side sealing plate numbered 09 for the input and output unit ...

Page 68: ...e 04 2019 06 25 Copyright Huawei Technologies Co Ltd 60 Figure 3 23 Installing sealing plates Step 7 Install the right sealing plate numbered 10 Figure 3 24 Installing sealing plates Step 8 Install the rear sealing plate numbered 11 for the power unit ...

Page 69: ... 06 25 Copyright Huawei Technologies Co Ltd 61 Figure 3 25 Installing sealing plates Step 9 Install the sealing plates numbered 12 for the bypass unit and input and output unit Figure 3 26 Installing sealing plates Step 10 Install supports for the busbar covers ...

Page 70: ...wei Technologies Co Ltd 62 Figure 3 27 Installing supports for the busbar covers Step 11 Install sealing plates for the battery wiring protective covers Figure 3 28 Installing sealing plates for the battery wiring protective covers End 3 2 3 UPS Cable Connection Reference Context ...

Page 71: ... the same as that of the part of the terminal that covers the conductor Procedure Step 1 Route a cable into the cabinet and bind it to a nearby beam Step 2 Pull the cable to the copper bar to which the cable is to be connected determine the cable length and mark the cable at the position where the cable is to be cut Step 3 Pull the marked cable out of the cabinet cut the cable from the marked posi...

Page 72: ...t Procedure Step 1 Connect the equipotential ground point and the ground bar in the equipment room Step 2 Remove the copper bars between the mains input and bypass input Perform this step only when the mains input and bypass input use different power sources Figure 3 31 Removing copper bars Step 3 Connect input and output busbars and battery cables based on the top copper bar position diagram Step...

Page 73: ...hnologies Co Ltd 65 Figure 3 32 Connecting the signal cables Step 5 Connect the PARALLEL ports on the power units and bypass unit to form a loop by using parallel signal cables Figure 3 33 Connecting the signal cables Step 6 Install supports and covers on the top of the protective covers ...

Page 74: ...nologies Co Ltd 66 Figure 3 34 Installing top supports and covers Step 7 Install mounting plates Figure 3 35 Installing mounting plates 1 Mounting plate numbered 13 2 Power unit 2 plate 2 Power unit 1 plate 4 Bypass unit plate 5 Input and output unit plate Step 8 Install the busbar covers ...

Page 75: ...f the power units Figure 3 37 Removing the protective covers End 3 2 5 Installing Optional Components 3 2 5 1 Installing a Battery Grounding Failure Detector Prerequisites If the power units share battery strings you need to install a battery grounding failure detector only in power unit 1 If the power units do not share battery strings you need to install battery grounding failure detectors in bo...

Page 76: ...tery grounding failure detector onto the bracket and reinstall the bracket in the cabinet Figure 3 39 Installing a battery grounding failure detector Step 3 Connect cables 1 Connect the power cables of the battery grounding failure detector to copper bars U and N on the top of the cabinet 2 Connect the signal cable of the battery grounding failure detector to the dry contact card MUE05A of the con...

Page 77: ...cover on the top of the power unit End 3 2 5 2 Installing the Maintenance Bypass Unit Prerequisites No busbars have been installed for the UPS Procedure Step 1 Determine the installation position for the maintenance bypass unit based on the cabinet securing holes in the marking off template A mounting holes on the channel steel B mounting holes on the floor ...

Page 78: ...gies Co Ltd 70 Figure 3 41 Hole dimensions unit mm Step 2 Remove the side panel and PC panel from the input and output unit and remove the rear and front covers from the input and output unit and maintenance bypass unit Step 3 Combine the maintenance bypass unit with the input and output unit ...

Page 79: ...ue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 71 Figure 3 42 Installing connecting plates Step 4 Secure the maintenance bypass unit to the mounting surface Step 5 Connect copper bars inside the maintenance bypass unit and input and output unit ...

Page 80: ... Technologies Co Ltd 72 Figure 3 43 Connecting internal copper bars Step 6 Install sealing plate supports and sealing plates for the maintenance bypass unit Figure 3 44 Installing sealing plate supports and sealing plates Step 7 Install mounting plates for the maintenance bypass unit ...

Page 81: ...o the maintenance bypass unit Figure 3 46 Connecting signal cables Step 9 Install anchor baffle plates for the maintenance bypass unit Step 10 Reinstall the front and rear covers and install the side panel removed from the input and output unit on the maintenance bypass unit End 3 2 5 3 Installing a Fan Unit Configure the fan unit if you install the cabinet against the wall ...

Page 82: ...Installation Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 74 Product Appearance Figure 3 47 UPS 1 Fan unit left 2 Power unit 2 3 Power unit 1 4 Bypass unit 5 Input output unit 6 Fan unit right Figure 3 48 Fan unit structure ...

Page 83: ... a Cabinet Step 1 Determine the cabinet installation positions on the floor based on holes in the marking off template for floor installation A mounting holes on the channel steel B mounting holes on the floor Figure 3 49 Fan unit hole dimensions unit mm Figure 3 50 Power unit hole dimensions unit mm 1 This hole is not required when power unit 1 is installed ...

Page 84: ...lling expansion bolts and then install expansion sleeves in the holes Step 3 Install side plates for the bypass unit and input output unit Step 4 Remove the rear door from the cabinet Step 5 Remove the door header from the rear of the cabinet Figure 3 52 Removing the door header rear view of the cabinet Step 6 Install the fan unit accessories at the rear of the cabinet Figure 3 53 Installing the f...

Page 85: ... at the rear of each cabinet Figure 3 54 Installing the anchor baffle plate at the rear of the cabinet Step 9 Install the bottom top and middle connecting plates for each cabinet in the sequence of bypass and input output unit power unit 1 power unit 2 and fan unit Install the screws that secure the cabinet to the ground Figure 3 55 Installing the connecting kits 1 Connecting kits without floating...

Page 86: ... remove the bottom cover tighten the anchor screws and reinstall the cover End Installing a Busbar The procedure for installing the sealing plate is different For details about other steps see the procedure for installing the busbar Step 1 Install the right sealing plate of the input output unit Figure 3 57 Install the right sealing plate Step 2 Remove the rear sealing plate from the power unit ...

Page 87: ...pyright Huawei Technologies Co Ltd 79 Figure 3 58 Removing the rear sealing plate from the power unit Step 3 Install the rear sealing plate of the power unit Figure 3 59 Installing the rear sealing plate of the power unit Step 4 Install the fan baffle plate numbered 50 ...

Page 88: ...e left fan unit Step 5 Install the rear sealing plate assembly for the bypass unit Figure 3 61 Installing the rear sealing plate assembly for the bypass unit 1 Part L numbered 51 2 Part R the part removed from the rear sealing plate of the power unit Step 6 Install the front and rear sealing plates numbered 12 of the bypass unit and input output unit ...

Page 89: ...ront and rear sealing plates numbered 52 of the fan unit Figure 3 63 Installing the front and rear sealing plates of the fan unit End Installing a Cable The procedure for installing a cable for the fan unit and installing a mounting plate is different For details about how to install cables for the power cabinet bypass cabinet and input output bypass cabinet see the preceding steps Step 1 Install ...

Page 90: ...le of the fan unit Step 2 Install the mounting plate Figure 3 65 Installing the mounting plate 1 Mounting plate numbered 13 2 Fan unit left mounting plate 3 Power unit 2 mounting plate 4 Power unit 1 mounting plate 5 Bypass unit mounting plate 6 Input Output unit mounting plate 7 Fan unit right mounting plate 8 Right mounting plate End ...

Page 91: ... Ambient temperature and humidity sensor N A N A COM1 port on the monitoring interface card MUS05A in the control module of the bypass unit Battery temperature sensor COM1 port on the monitoring interface card MUS05A in the control module of power unit 1 Connect the temperature sensor of the battery string of each power unit to the COM1 port on the monitoring interface card MUS05A in the control m...

Page 92: ...atic bypass but does not disconnect the UPS mains input To power off the UPS completely open the front end input switch when triggering EPO Connect the requisite EPO switch to the bypass unit dry contacts Figure 3 66 Cable connection for an NC EPO switch Figure 3 67 Cable connection for an NO EPO switch When the EPO switch is in the NC state remove the jumper between EPO_NC and EPO_12V before conn...

Page 93: ... 3 3 1 Connecting Power Cables Procedure Step 1 Ground each UPS in a parallel system separately and connect power cables and battery cables Step 2 Choose a parallel mode and connect cables to the parallel system based on site requirements Figure 3 68 1 1 parallel system schematic diagram Connect power cables according to port silk screen ...

Page 94: ...chematic diagram The length and specifications of power cables on each UPS must be the same to achieve current equalization in bypass mode The power cables include bypass input power cables and UPS output power cables End 3 3 2 Connecting Signal Cables Connecting Signal Cables to a Parallel System Figures show only the CM which stands for the UPS ...

Page 95: ... Bypass Unit of UPS1 4 Power Unit 2 of UPS2 5 Power Unit 1 of UPS2 6 Bypass Unit of UPS2 Figure 3 71 Single UPS dual bus system schematic diagram 1 Power Unit 2 of UPS1 2 Power Unit 1 of UPS1 3 Bypass Unit of UPS1 4 Power Unit 2 of UPS2 5 Power Unit 1 of UPS2 6 Bypass Unit of UPS2 Connecting Other Signal Cables Connect signal cables for each UPS 3 4 Installation Verification Table 3 7 lists check ...

Page 96: ... are secured evenly and no burr exists 06 Cable connections The input output and battery cables are securely connected For the cables secured by screws the spring washers are flattened 07 Grounding The resistance between the UPS ground bar and the equipment room ground bar is less than 0 1 ohm 08 AC phase sequence The mains input bypass input and output phase sequences are correct 09 Battery cable...

Page 97: ...are drilled for routing cables or covers are removed for routing cables after routing cables and checking cable connections use sealing putty to fill in the gap between the cables and the cabinet 2 After verifying the installation reinstall all the covers 3 Do not remove the dustproof cover before power on to prevent dust inside the UPS ...

Page 98: ...layed in this document correspond to the MDU version V300R002C10SPC130 and are for reference only The LCD screen is divided into three parts status bar alarm bar and information area Figure 4 1 Main menu Table 4 1 Main screen description Number Area Function 1 Status bar Displays the UPS model capacity configuration current date and time USB flash drive status and buzzer status ...

Page 99: ...ch as load and battery information Tap the Bypass Mains Battery and Load icons to view details Table 4 2 Functions of common buttons Button Function Returns to the main screen Scrolls the page down Scrolls the page up Returns to the upper level menu Logs a user out Table 4 3 LCD user passwords Default User Preset Password admin administrator 000001 operator common user 000001 On the System Info sc...

Page 100: ... and bypass unit 4 1 2 Menu Hierarchy Table 4 4 LCD menu hierarchy Menu Position Main Menu Second Level Menu Third Level Menu System System Status Bypass Mains Load Battery System Info Runn Info AC Output UPS Load Mains Input Bypass Input Power Unit 1 Batt Power Unit 2 Batt Total Runtime Environment Data Alarms Active Alarms Historical Alarms ...

Page 101: ...m Settings System Settings Input Settings Output Settings Bypass Settings Dry Contact Set Settings Wizard User Settings Parameter Sync DST Settings Maintenance USB Operations Inv ON Inv OFF Screen Calib About Common Functions AC Output UPS Load Mains Input Inv ON Inv OFF Buzzer Off Historical Alarms Power Unit Power Unit Status Mains Load Battery Power Unit Info Runn Info AC Output UPS Load Mains ...

Page 102: ...arms Active Alarms Historical Alarms Settings Comm Settings Battery Settings iBOX Settings Dry Contact Set Maintenance Battery Maint ECM Switchover iBOX Control Fan Life About Common Functions AC Output UPS Load Mains Input Historical Alarms Bypass Unit Bypass Unit Status Bypass Load Bypass Unit Info Runn Info AC Output UPS Load Bypass Input Total Runtime Alarms Active Alarms Historical Alarms Mai...

Page 103: ...d data of the bypass unit Mains Input System mains input data Mains input data of this power unit N A Bypass Input System bypass input data N A System bypass input data Power Unit 1 Batt Power unit 1 battery data N A N A Power Unit 2 Batt Power unit 2 battery data N A N A Total Runtime System inverter and bypass runtime Inverter runtime of this power unit System bypass runtime Environment Data Sys...

Page 104: ...ht Huawei Technologies Co Ltd 96 Figure 4 3 System running 1 Figure 4 4 System running 2 On the System Info screen tap the power unit icon to access the Power Unit N battery screen and tap to access the Runn Info screen of the current power unit Figure 4 5 Power unit running 1 ...

Page 105: ...t power Table 4 7 UPS load Item Description Active power kW Output active power of each phase on the UPS Apparent power kVA Output apparent power of each phase on the UPS Reactive power kvar Output reactive power of each phase on the UPS that is square root of the difference between the square of output apparent power and the square of output active power Load ratio Load ratio of each phase on the...

Page 106: ...Bypass input phase current Frequency Hz Bypass input frequency Power factor Proportion of the bypass input active power to the bypass input apparent power Table 4 10 Power Unit N Batt Item Description Battery status Battery status which can be Not connected Equalized charging Float charging Hibernating discharging or Not chg or dis Voltage V Voltage of the battery string Current A Current of the b...

Page 107: ... sensor is required If no sensor is connected the ambient temperature sampled by the bypass unit is displayed Ambient humid RH Humidity measured by the ambient temperature and humidity sensor If the sensor is not installed NA is displayed Module Data reflects each data of a module Battery Detailed Data Batt String Data reflects the voltage current SOC and SOH data of each battery string Battery De...

Page 108: ...nfo screen to access the Alarms screen Figure 4 7 System alarms Active Alarms This screen displays alarm information including the severity name ID location and generation time Figure 4 8 Active alarms Historical Alarms This screen displays alarm information including the severity name ID location generation time and clear time ...

Page 109: ...layed on the operation screen 4 1 3 3 Settings Table 4 14 Setting data description Setting Item System Power Unit Comm IP Settings System IP settings IP settings of this power unit Comm RS485 Settings System RS485 settings RS485 settings of this power unit Comm ModbusTCP Settings System ModbusTCP settings ModbusTCP settings of this power unit Comm Amb T H Sensor Ambient temperature and humidity se...

Page 110: ...Contact System dry contact settings Dry contact settings of this power unit Settings Wizard Settings wizard User Settings User settings Parameter Sync Synchronizing parameters of the power units and bypass unit DST Settings DST settings Battery Settings Battery settings of this power unit iBOX Settings iBOX settings of this power unit On the System Info screen tap to access the Settings screen of ...

Page 111: ...es Co Ltd 103 Figure 4 11 System settings 2 On the System Info screen tap the power unit icon to access the Power Cabinet N Info screen and tap to display the Settings screen of the current power unit Figure 4 12 Power unit settings Communication Settings Figure 4 13 System communication settings ...

Page 112: ...AN switch or router with the DHCP function the IP address can be allocated manually or automatically Manual allocation is used by default Manual Check that their IP addresses are two different values on the same network segment Set the UPS IP address to be in the same subnet as the PC IP address Perform the bitwise AND operation for the UPS IP address and the PC IP address with the subnet mask res...

Page 113: ...ected network Ensure that the MDU and PC are on the same network segment After you restart the device IP address allocation changes back to Manual The IP address is set to the IP address set previously Item Description Default Value Value Range IP address Specifies the IP address for the Ethernet NOTICE Ensure that the UPS IP address is unique on the network segment Otherwise the WebUI display fun...

Page 114: ...to match the user s network management conditions onsite 9600 9600 19200 115200 Parity mode Verify the validity of RS485 communication characters When a device node adopts RS485 communication ensure that the parity modes for the device nodes are set to the same mode None None Odd Even Stop bit Stop bit in the Modbus communication frame format When the UPS is connected over the serial port Modbus s...

Page 115: ...ModbusTCP encryption If Modbus TCP is used for communication communication links do not implement encryption or implement encryption based on the selected encryption mode Enable Disable Enable Figure 4 18 Ambient temperature and humidity sensor Item Description Default Value Value Range Start address 32 32 44 Quantity Number of cascaded ambient temperature and humidity sensors 0 0 4 ...

Page 116: ...es Co Ltd 108 Figure 4 19 Battery temperature sensor Item Description Default Value Value Range Start address 16 16 28 Quantity Number of cascaded battery temperature sensors 0 0 4 Figure 4 20 BMU Item Description Default Value Value Range Start address 112 Quantity Number of cascaded BMUs 0 0 12 ...

Page 117: ...tion Default Value Value Range SSID When using the mobile app for site setup or inspection set WiFi SSID after connecting a WiFi module over a USB port to identify the WiFi device to which the mobile phone is connected UPS_WIFI Last six characters of the MAC address Password The password for accessing WiFi Changeme System Settings Figure 4 22 System settings 1 ...

Page 118: ...arallel mode Single Single Parallel Requisite modules Matches the system capacity 12 22 Redundant modules Set this parameter based on load capacity and redundancy requirements 0 0 10 Working mode UPS working mode Normal mode Normal mode ECO Self load mode Converter mode ECO voltage range In ECO mode when the difference between the bypass voltage and the rated voltage is greater than this value the...

Page 119: ...rly connected and that BSC related hardware is properly installed Non BSC mode Non BSC mode Standard BSC mode Optional BSC card BSC N R mode Altitude m Set this parameter based on the altitude of the place where the rack is used 1000 1000 1000 2000 2000 3000 3000 4000 4000 5000 Top outlet fan If the fan unit is configured set this parameter to Enable Disable Disable Enable Air filter maintenance p...

Page 120: ...ries depending on the rack number and module number 1 module in rack 1 does not have a start delay Maintenance bypass cabinet If the maintenance bypass unit is configured set this parameter to Enable Disable Disable Enable Intelligent detection module N A Disable Disable Enable Input Settings Figure 4 25 Input settings Item Description Default Value Value Range D G mode Set this parameter to Enabl...

Page 121: ...00 50 200 Output Settings Figure 4 26 Output settings Item Description Default Value Value Range Output voltage level Specifies the system output voltage level This parameter is configurable only after the inverter shuts down After you change the voltage level the upper limit of the bypass voltage restores to the default value If the voltage level is 380 V or 400 V the default upper limit is 15 If...

Page 122: ...ut freq track rate Hz s is slow the inverter frequency is different from the bypass frequency when the bypass frequency changes If output is overloaded or the inverter is faulty an interruption less than 20 ms occurs when the UPS transfers from normal mode to bypass mode If Output freq track rate Hz s is fast the inverter frequency is unstable 0 6 Hz s 0 1 Hz s to 2 0 Hz s Bypass Settings Figure 4...

Page 123: ...xceeds the upper threshold for the bypass voltage the system determines that the bypass voltage is not normal and that the bypass is unavailable 20 10 15 20 30 40 50 Bypass frequency range Hz When the difference between the bypass input frequency and the rated frequency is greater than the specified value the system determines that the bypass frequency is abnormal so the bypass is unavailable The ...

Page 124: ...cause a data backup fault When you set parameters ensure the following Dis cur 0 1C EOD Dis cur 0 3C EOD Dis cur 0 5C EOD Dis cur 1 0C EOD A cell consists of electrodes and electrolyte which is the basic unit for the battery Each cell has a nominal voltage of 2 V A battery is a module consisting of single or multiple cells in a shell Each battery has a nominal voltage of 2 V 6 V or 12 V In a 1 1 p...

Page 125: ... in the battery string in series Depends on the actual model 5 9999 Batteries in a battery string Specifies the number of batteries in a battery string 2 V battery 240 6 V battery 80 12 V battery 40 2 V battery 180 300 6 V battery 60 100 12 V battery 30 50 Number of battery strings Specifies the number of battery strings connected in parallel 1 1 4 Installation time A battery maintenance reminder ...

Page 126: ...e discharging current is 0 1C 0 3C 0 5C and 1 0C respectively 1 80 V cell 1 8 1 9 Dis cur 0 3C EOD V cell 1 80 V cell 1 8 1 9 Dis cur 0 5C EOD V cell 1 75 V cell 1 75 1 85 Dis cur 1 0C EOD V cell 1 60 V cell 1 6 1 75 Sched shallow dis test When certain conditions are met the charger shuts down and batteries supply power to loads The system records the battery discharge data as the reference for ba...

Page 127: ...it 0 0 4 iBOX start address Communication address when the southbound device queries iBOX data 60 iBAT number of iBOXN The number of iBATs managed by the iBOX 0 0 300 iBOX logical start addr Communication address when the northbound device queries iBOX data 0 0 124 Figure 4 33 Advanced parameters Item Description Default Value Value Range Current source Specifications of the Hall effect sensor use...

Page 128: ...positive or negative terminal of a battery string Multi Hall cur setting 1 1 1 8 Figure 4 34 Battery string configuration Set the iBOX and iBAT number for each battery string Dry Contact Settings Set only the dry contacts that are needed Otherwise the UPS may not run properly When a dry contact card is disabled its dry contact signals are disabled After a dry contact card is enabled its dry contac...

Page 129: ... In use D G connection GEN Enable or disable D G connection detection In use BCB connection OL Enable or disable BCB connection detection In use Battery breaker STA Enable or disable battery circuit breaker status detection In use PDC output breaker OUT Enable or disable PDC output circuit breaker status detection In use PDC maintenance breaker MT Enable or disable PDC maintenance circuit breaker ...

Page 130: ...is closed the corresponding DI port executes the specified action for example raises an alarm when the DI port detects a short circuit If the DI port valid setting is open the corresponding DI port executes the specified action for example raises an alarm when the DI port detects an open circuit MUS05A DO_1 MUS05A DO_2 MUS05A DO_3 MUS05A DO_4 Corresponds to the signal of the output dry contact DO ...

Page 131: ...on Default Value Value Range Language Twelve languages are supported English English Chinese Spanish Dutch French German Italian Polish Portuguese Russian Swedish Turkish Password 000001 password complexity check If the password complexity check is disabled the user password is required to be a string of six to eight digits If the password complexity check is enabled the Enable Disable Enable ...

Page 132: ...ns USB operations Inv ON Starting the inverter of the single UPS Inv OFF Shutting down the inverter of the single UPS Screen Calib Calibrating the touchscreen Battery Maint Battery maintenance of this power unit ECM Switchover Switchover of active and standby ECMs of this power unit Switchover of active and standby ECMs of the bypass unit iBOX Control Controlling the iBOX of this power unit Fan Li...

Page 133: ...5 Copyright Huawei Technologies Co Ltd 125 Figure 4 37 System maintenance On the System Info screen tap the power unit icon to access the Power Cabinet N Info screen and tap to display the Maintenance screen of the current power unit Figure 4 38 Power unit maintenance ...

Page 134: ...tery maintenance when no alarm is active on the UPS Otherwise the UPS may supply no power A proportion of battery capacity will discharge during battery maintenance This reduces the discharge time before the next charge Do not perform battery maintenance when a D G is connected Perform battery maintenance periodically to increase the battery lifespan and improve the UPS reliability Battery mainten...

Page 135: ...he battery discharge performance data ECM Switchover Only professional personnel are allowed to use this function Clear faults before performing ECM active standby switchover After an ECM is inserted active and standby switchover is supported only after the ECM is configured and starts working properly about 30 seconds If the ECM to be maintained is still working perform ECM active standby switcho...

Page 136: ... Huawei Technologies Co Ltd 128 Figure 4 41 About 4 1 4 System Status On the System Status screen you can view the data and information related to the mains input bypass input load and battery by tapping corresponding icons Figure 4 42 System status Figure 4 43 Power unit status ...

Page 137: ... AC output data of the bypass unit UPS Load System load data Load data of this power unit System load data Mains Input System mains input data Mains input data of this power unit N A Inv ON Starting the inverter of the single UPS N A N A Inv OFF Shutting down the inverter of the single UPS N A N A Buzzer Off Buzzer off N A N A Historical Alarms All historical alarms Historical alarms of this power...

Page 138: ...rd and click Login The preset UPS IP address is 192 168 0 10 You can set the UPS Ethernet IP address on the LCD or WebUI The value range is 1 0 0 0 223 255 255 255 Table 4 18 User description Default User Preset Password User Rights admin system administrator Changeme Performs all operations on the LCD and WebUI including system running information browsing system information exporting parameter s...

Page 139: ...er a user logs in to the WebUI if another user logs in with the same user name the current account will be logged out It is advised to change the password after the first login using User Mgmt on the Config page to prevent unauthorized access End 4 2 2 Monitoring Page Figure 4 46 Monitoring page If NA is displayed for load ratio the value is invalid or outside the range When the message Don t let ...

Page 140: ...ring information The parameters that have been introduced in the LCD section are not described in the WebUI section The information displayed in Active Alarms and Real time Data is the same as that on the LCD so the information is not described in the WebUI section 4 2 2 1 Parameter Settings Figure 4 47 System parameter settings Figure 4 48 Power unit parameter settings System Settings Item Descri...

Page 141: ...Bus Capa Life If this parameter is set to Enable the UPS detects the bus capacitor lifespan Disable Disable Enable Paral sys hibernate When customer loads are light enable parallel hibernation to alternate modules in hibernation mode which can prolong their service life and improve the system efficiency Disable Disable Enable Module cycle hiber period d Indicates the rotation interval of modules i...

Page 142: ...g 40 ms after the fault occurs are recorded and the like 0 ms 0 ms 20 ms 40 ms 60 ms 80 ms Collect real time site waveform If this parameter is set to Enable one waveform can be stored manually Disable Disable Enable Fan life Indicates the life detection for fans in the power modules and bypass module Enable Disable Enable Pre warn time for fan life mon Indicates the time when a warning about fan ...

Page 143: ... 120 ms Max BPM transfer times Cross currents occur during the transfer between bypass mode and inverter mode which impacts the system This parameter specifies the number of transfers between bypass mode and inverter mode within 1 hour which ensures system security 5 1 10 Current equal detection Monitors the current differences between racks or modules If this parameter is set to Enable the Mod Cu...

Page 144: ...ry time 5s 5s 1min 5min 10min Capacitor failure detection If Capacitor failure detection is set to Enable the power module power unit performs inverter capacitor fault detection based on the settings of Capacitor failure detection upper limit and Capacitor failure detection lower limit If the power module determines that the inverter capacitor is faulty it shuts down the inverter to prevent the fa...

Page 145: ...ries in each battery string have the same charge voltage and discharge voltage When a value exceeds the specified range an alarm is generated The calculation formula is Charge Discharge voltage Average voltage Average voltage x 100 The charge discharge voltage and average voltage are obtained from the BMU If the BMU is not configured these two parameters do not need to be set Item Description Defa...

Page 146: ...arts when the non equalized charging time exceeds Scheduled equalized charging interval 60 30 180 Equalized charging protection interval d 7 0 15 Forced equalized charging protection time h When batteries are continuously under float charging or hibernation enable forced equalized charging When the forced equalized charging time reaches the value of this parameter batteries automatically transfer ...

Page 147: ...ngle batt dis voltage deviation alarm thres are used to check whether the cells in each battery string have the same charge voltage and discharge voltage When a value exceeds the specified range an alarm is generated The calculation formula is Charge Discharge voltage Average voltage Average voltage x 100 10 5 30 Single batt dis voltage deviation alarm thres 20 10 30 Batt charging capacity mismatc...

Page 148: ...s of low batt SOC over dry contact If an output dry contact is set to Low battery SOC and the battery SOC is lower than this threshold the output dry contact will output signals 75 5 80 Thres of low batt volt over dry contact V cell If an output dry contact is set to Batt Volt Below Threshold and the battery voltage is lower than this threshold the output dry contact will output signals 1 70 1 70 ...

Page 149: ...shut down the inverter of this power unit Figure 4 52 Power unit control 4 2 3 Query 4 2 3 1 Historical Alarms Table 4 20 Query description Cabinet Historical Records System Query all historical alarms Power unit Query historical alarms of the current power unit Bypass unit Query historical alarms of the bypass unit The following figure uses system query as an example ...

Page 150: ...rical alarms 4 2 3 2 Logs Table 4 21 Query description Cabinet Log Record System Export historical logs of all units excluding battery test logs Power unit Query and export the battery test logs of the current power unit Bypass unit Figure 4 54 Logs 4 2 4 Config 4 2 4 1 User Management On the home page choose Config User Mgmt ...

Page 151: ...ters and can contain only uppercase and lowercase letters digits and underscores The password contains 6 to 20 characters and at least two types of uppercase letters lowercase letters digits and underscores If the LUI password complexity check is disabled the user password is required to be a string of six to eight digits If the password complexity check is enabled the user password is required to...

Page 152: ...ost or not reported in time The certificate is used for Secure Sockets Layer SSL encryption protection for WebUI login You need to apply to a third party institution for the certificate Configuration Management is used to upload and export configuration parameters in the monitoring system Multi brand Management is used to import the brand information of a partner to the corresponding WebUI Specify...

Page 153: ... the validity of the ModbusTCP access certificate ModbusTCPAuthentication Verify the identity legitimacy of both parties to ensure data security for both parties in ModbusTCP communication After eUPS certificate management is configured a certificate can be imported on the WebUI to replace the preset eUPS certificate 4 2 4 3 RCCMD RCCMD RCCMD function is set to Disable by default as shown in Figur...

Page 154: ...set on the page of the UPS5000 monitor display module MDU must be the same as the setting on the RCCMD client SSL Encrypted Transmission is set to Enable by default as shown in Figure 4 59 If it is set to Disable the RCCMD certificate controls will not be displayed on the page as shown in Figure 4 60 If SSL Encrypted Transmission is set to Disable a message indicating there is a risk will be displ...

Page 155: ...SL encrypted transmission enabled by default Figure 4 60 SSL encrypted transmission disabled Event Configuration The MDU supports 17 alarm events and a maximum of 50 jobs can be added for each event as shown in Figure 4 61 Figure 4 61 shows the buttons on the Event Configuration page and Table 4 22 describes these buttons ...

Page 156: ...ou can view all jobs of all events by clicking this button 2 Button for expanding one event You can view all jobs of the event by clicking this button 3 Button for adding one job You can add one job for the event by clicking this button 4 Button for adding one job for events Select multiple events and you can add one job for the selected events at the same time by clicking this button 5 Button for...

Page 157: ...ne job You can delete the job by clicking this button 3 Button for test If you click this button the job will be performed and a message showing test succeeds or fails will be displayed on the page Adding one job for one event Select one event for example Inverter on click the button for adding one job and the page for adding a job for the event is displayed When adding a job the job types to be s...

Page 158: ...to specify the RCCMD client IP address and port When the RCCMD client receives the job it will shut down the computer Figure 4 63 RCCMD shutdown RCCMD Message Specify the RCCMD client IP address port and message to be conveyed The RCCMD client will receive the message For example enter This is a test message Figure 4 64 RCCMD message ...

Page 159: ... command Figure 4 65 RCCMD execute RCCMD TRAP When the event happens the MDU will send the TRAP message to all connected RCCMD clients based on the sending mechanism If you want to define the TRAP message by yourself you can use the TRAP signal to display the UPS information For example if you enter INVOLT V the RCCMD client will receive the UPS input voltage value for example single phase 220 V t...

Page 160: ...Output voltage V OUTCURR Output current A OUTLOAD Output load rate BATTCAP Remaining battery capacity INVOLT Input voltage V BYPASSINVOLT Bypass input voltage V TEMPDEG Temperature inside the UPS Celsius AUTONOMTIME Battery backup time minutes STATUS UPS status N A RUNTIME UPS operating time minutes BATTVOLT Battery voltage V INFREQ Input frequency Hz BYPASSINFREQ Bypass input frequency Hz OUTFREQ...

Page 161: ...er the battery mode is activated for X seconds the job will be sent to the RCCMD client once At X seconds remaining time When the battery backup time has only X seconds left the job will be sent to the RCCMD client once X and Y are variables and stand for time RCCMD Certificate Management After replacing the certificate on the MDU WebUI replace the certificate on the RCCMD client too Otherwise com...

Page 162: ... enter the key password 4 2 4 4 Managing the UPS by Using the NMS Complying with RFC1628 Standard Installing the UPS MIB The MIB is in the MDU Click Download UPS RFC1628 MIB on the page of the web browser to download the MIB file which allows the third party NMS to manage the UPS remotely Figure 4 68 Download the MIB The UPS RFC1628 MIB has more alarms than RFC1628 Download the UPS RFC1628 MIB bef...

Page 163: ...le The method for managing the UPS by using the UNMS II is the same as the method for managing other devices by using the UNMS II For details see the UNMS II user manual 4 2 5 Protecting the Server by Using the RCCMD Software 4 2 5 1 Introduction to the Software The RCCMD shutdown software is part of the centralized monitoring system of the Generex network The UPS5000 MDU integrates the functions ...

Page 164: ...n to Enable Step 3 On the WebUI of the MDU the SSL encryption is set to Enable by default and does not need to be set If the RCCMD client is set to the unencrypted mode you need to set the SSL encryption to Disable on the server WebUI Step 4 Configure events If you set the job type to RCCMD Message under Inverter on specify the IP address and port of the RCCMD client The port is 6003 by default If...

Page 165: ...the IP address of the MDU that detects heartbeat needs to be added Then the UPS alive check function is supported the RCCMD can check whether the UPS and RCCMD communicate properly the RCCMD can receive messages sent by the MDU Procedure Step 1 On the RCCMD client add the IP address of the MDU that detects heartbeat as shown in Figure 4 71 Step 2 The UPS5000 MDU supports both ways of heartbeat det...

Page 166: ...A User Manual 4 User Interface Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 158 Figure 4 71 Heartbeat detecting mode on the RCCMD client You can also manually detect heartbeat by clicking Run alive check now ...

Page 167: ...00 S 1200 kVA User Manual 4 User Interface Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 159 Figure 4 72 Detecting heartbeat manually Figure 4 73 Detecting heartbeat manually and successfully End ...

Page 168: ...owering on the UPS ensure that all the UPS switches and upstream switch are OFF Procedure Step 1 Close the upstream bypass and mains input switches Measure the voltage and frequency of the UPS input switch and upstream input switch The line voltage range is 138 485 V AC and the frequency range is 40 70 Hz Step 2 Turn on output circuit breaker 1 Q5 1 and output circuit breaker 2 Q5 2 Step 3 Turn on...

Page 169: ...e UPS_WIFI signal and connect to the WiFi signal The password is Changeme b Set the Site and Device Type as required and connect the device Set IP to 192 168 0 10 Port to 443 Username to admin Password to Changeme and click Login c After login tap Power on password activation on the screen A message is displayed indicating whether to start the UPS Tap OK Offline Startup a Set Site and Device Type ...

Page 170: ...me Figure 5 1 Settings Wizard Set the time and date correctly Incorrect time and date will cause false fault analysis during maintenance or repair After you set network parameters connect the UPS to the network over a network cable which enables you to remotely manage the UPS If you do not need remote management retain the default network parameter settings Step 2 Optional On the LCD of the system...

Page 171: ...te EPO switch you need to choose Monitoring Param Settings System Settings on the WebUI and check that EPO detection is set to Enable Step 4 View the system running diagram on the MDU to check that the UPS is working in bypass mode End 5 1 3 Starting the Inverter Starting the UPS on the LCD Step 1 Choose Common Functions Inv ON You can also start the inverter by choosing System Info Maintenance In...

Page 172: ...etting the Internet options Step 3 In the address box of the browser enter https UPS IP address Step 4 Enter the correct user name and password and click Login Figure 5 3 Logging in to the WebUI Step 5 On the home page of the WebUI choose Monitoring Control click Inv ON and confirm the operation to start the inverter ...

Page 173: ...al mode The Bypass mode alarm disappears Procedure Step 1 After confirming that the battery strings are properly connected close the battery string input circuit breaker If there are multiple battery strings close the circuit breaker for each battery string and then the general circuit breaker between battery strings and the UPS The No battery alarm disappears from the MDU Step 2 Turn on the syste...

Page 174: ...n to Enable and set BCB connection OL and Battery breaker STA to Enable Figure 5 5 BCB connection setting End 5 1 6 Optional Setting Parameters for the Maintenance Bypass Unit Prerequisites The maintenance bypass cabinet has been configured Procedure Step 1 Choose System Info Settings System Settings Set Maintenance bypass cabinet to Enable Figure 5 6 Setting parameters for the maintenance bypass ...

Page 175: ...able Figure 5 7 Setting parameters for the top outlet fan End 5 2 Shutting Down and Powering Off the UPS Context After the inverter is shut down if the bypass is normal the UPS transfers to bypass mode if the bypass is not normal the UPS supplies no power Before shutting down the UPS ensure that all loads have shut down Procedure Step 1 Shut down the inverter Shutting down the inverter on the LCD ...

Page 176: ...layed on the LCD Figure 5 8 Normal bypass Figure 5 9 Abnormal bypass Step 2 After the inverter shuts down turn off the downstream output switch Q5 Step 3 Turn off the battery string circuit breaker of each power unit If there are multiple battery strings turn off the general circuit breaker between battery strings and the UPS and then turn off the circuit breaker for each battery string Step 4 Tur...

Page 177: ...ber of batteries in the battery string which indicates that the batteries are connected properly Step 4 Press and hold down the BATT START button on the bypass module for at least 2 seconds The system automatically enters the battery cold start status The LCD displays the Huawei logo and an initialization progress bar Step 5 After LCD initialization start the inverter End 5 4 Transferring to Bypas...

Page 178: ... less than 10 Before transferring the UPS to ECO mode ensure that the bypass module works properly Procedure Step 1 On the LCD of the system choose System Info System Settings and set Working mode to ECO The information indicating that the UPS works in ECO mode is displayed on the LCD Step 2 Set the ECO voltage range Figure 5 10 ECO parameters Step 3 If you set ECO mode in bypass mode manually sta...

Page 179: ... the equalized charging state If the battery strings of two power units are shared you only need to perform the forced equalized charging test for one power unit to complete all battery tests If the battery strings are not shared you need to perform the forced equalized charging test on the LCD of both power units to complete all battery tests Procedure Step 1 On the home screen of the power unit ...

Page 180: ...tery overtemperature overvoltage or overcurrent alarm No generator is connected to the UPS The mains batteries charger and discharger are normal No overload alarm is generated If the battery strings of two power units are shared you only need to perform the shallow discharge test for one power unit to complete all battery tests If the battery strings are not shared you need to perform the shallow ...

Page 181: ...pecified value 10 50 20 by default The discharge voltage reaches the warning threshold calculated in real time The load ratio fluctuation exceeds 10 An alarm is generated End 5 6 3 Capacity Test Context Before a capacity test ensure that The UPS is working in normal mode float charging or hibernation has lasted for 2 hours after the state of charge SOC reaches 100 and the load ratio fluctuation is...

Page 182: ...ny of the following cases The battery discharge voltage reaches the end of discharge EOD voltage plus 0 01 V The load fluctuation exceeds 10 An alarm is generated When the battery discharge voltage reaches the EOD voltage plus 0 01 V the test is complete The test data is used as capacity test data Save the capacity test data record with the largest discharge capacity in a month as the capacity tes...

Page 183: ...nstalled Context Strictly observe the following procedure to transfer the UPS to maintenance bypass mode Otherwise loads may power off In maintenance bypass mode the mains supplies power to the loads directly over the maintenance bypass If the mains is abnormal the loads may power off Procedure Step 1 Manually switch the UPS to bypass mode Step 2 Turn on the maintenance bypass switch After the UPS...

Page 184: ...aintenance bypass switch The Maint breaker closed alarm disappears from the MDU Step 2 Start the inverter End 5 9 Performing EPO After the EPO button is turned on the UPS supplies no power and the loads shut down In maintenance bypass mode the UPS continues to supply power even after the EPO button is turned on Press the external EPO switch that connects to the dry contact card or remove the 4 pin...

Page 185: ...rd of the bypass unit Step 2 Clear the EPO alarm On the LCD On the LCD of the system choose System Info Alarms and tap Clear Faults After confirmation the EPO alarm will be cleared Figure 5 17 Clear Faults On the WebUI On the WebUI of the system choose Monitoring Control System Commands and Tests and click Clear Fault to clear the EPO alarm Figure 5 18 Clear Fault Step 3 Check that the EPO alarm i...

Page 186: ...p 4 Start the inverter End 5 11 Data Export Prerequisites You have logged in to the WebUI Context The following data can be exported Historical alarms Logs E Label Fault Data This topic describes how to export Historical Alarms Procedure Step 1 Choose Query Historical Alarms and set Severity Generated and Cleared Figure 5 19 Querying historical alarms You do not need to query logs Choose Query Log...

Page 187: ...wer is small and stable you can shut down the inverters in some power modules so that these power modules enter hibernation mode and other power modules bear all the load power This improves the system efficiency in the case of small load power and increases the power module service life The hibernation function can be set on the WebUI Procedure Step 1 On the WebUI of the system choose Monitoring ...

Page 188: ... Huawei technical support Only maintenance engineers can maintain power modules and bypass modules Maintain UPSs regularly based on the following requirements Otherwise the UPSs may fail to operate properly and the service life may be shortened 6 1 1 Monthly Maintenance Table 6 1 Monthly maintenance Check Item Expected Result Troubleshooting Operating environment Ambient temperature 0 40 C Humidit...

Page 189: ... a white paper and the paper does not turn black Remove the dust especially from the air filter on the front door or replace the air filter Parameter configuration The configuration of the output voltage grade frequency number of batteries and battery capacity meets requirements Reset the parameters Status record Record the three phase load rate and output power factor If an exception occurs check...

Page 190: ...ion of some key UPS components you are advised to check the key components on a regular basis and replace them within the service life Table 6 4 Service life parameters for replaceable components and recommended replacement intervals Key Component Design Service Life Recommended Replacement Interval Power module 15 years 10 years Bypass module 15 years 10 years Fan 15 years 10 years LCD screen 10 ...

Page 191: ...owed to perform the maintenance tasks 6 2 2 Monthly Maintenance Table 6 5 Monthly maintenance Item Expected Result Troubleshooting Battery management alarm No battery management alarm is generated Identify the cause of an alarm based on the alarm information Battery appearance 1 The surface is clean and tidy without stains 2 The battery terminals are intact 3 Batteries are free from damage and cra...

Page 192: ...ss than 3 C 1 Install the temperature sensor in the correct position 2 Replace the battery temperature sensor Battery management parameter settings The settings of battery management parameters meet the requirements in the user manual Set parameters correctly Tightness of battery screws The location of the signs marked on battery terminals indicating tight connections does not change Take photos f...

Page 193: ...ity Test When the UPS is backed up discharge a battery to the undervoltage alarm threshold to refresh the capacity of the battery 1 Locate the cause when an exception is identified 2 If the fault persists contact Huawei technical support Battery connection reliability 1 Each battery terminal is connected reliably When battery strings are powered off check the reliability of each terminal in the or...

Page 194: ...box is configured To restore battery discharge close the battery switch in the BCB box if any first To restore battery discharge after batteries reach EOD use one of the following methods 1 Switch to another battery string Ensure that each battery has a voltage greater than the EOD voltage and 11 3 V cell 2 Restore the mains power supply to start the inverter Close the battery switch and charge ba...

Page 195: ... s an alarm The buzzer is activated the Fault indicator is on and the charging function fails The charger fails Replace the power module The charger experiences overcurrent Replace the power module The charger experiences undervoltage Check whether the configured number of batteries is correct If the value is correct but the alarm persists replace the power module The UPS works in bypass mode and ...

Page 196: ...r Manual 7 Troubleshooting Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 188 For details about component replacement and maintenance involved in Troubleshooting and Alarm List consult Huawei maintenance engineers ...

Page 197: ...MP Dimensions H x W x D 2200 mm x 2800 mm x 1000 mm without a maintenance bypass unit and fan unit 2200 mm x 3400 mm x 1000 mm with a maintenance bypass unit 2200 mm x 3600 mm x 1000 mm with a fan unit Weight 2360 kg without a maintenance bypass unit and fan unit 2590 kg with a maintenance bypass unit 2660 kg with a fan unit Table 8 2 Environmental specifications Item Specifications Operating temp...

Page 198: ...susceptibility EN IEC62040 2 EN IEC61000 4 6 Radiated susceptibility EN IEC62040 2 EN IEC61000 4 3 Electrical fast transient EFT EN IEC62040 2 IEC61000 4 4 Surge protection EN IEC62040 2 IEC61000 4 5 Power frequency magnetic field IEC61000 4 8 Table 8 4 Mains input electrical specifications Item Specifications System Three phase four wire and PE Rated voltage 380 V AC 400 V AC 415 V AC line voltag...

Page 199: ...batteries 40 batteries by default If there are 40 to 50 batteries the output power is not derated If there are 36 to 39 batteries the output power is derated to 90 If there are 32 to 35 batteries the output power is derated to 80 If there are 30 to 31 batteries the output power is derated to 70 2 V batteries 180 300 batteries 240 batteries by default If there are 240 to 300 batteries the output po...

Page 200: ... normal mode the frequency is synchronous with the bypass input frequency In battery mode the frequency is 50 60 Hz with a tolerance of 0 05 THDv THDv 1 full linear load THDv 4 full non linear load Power factor 1 Transfer time Uninterruptible transfer 0 ms Interruptible transfer 20 ms Output voltage imbalance Voltage imbalance 3 phase imbalance 2 Overload capability Inverter overload capability 10...

Page 201: ...at 125 150 load The UPS runs for 5 minutes at bypass single phase or three phase load 150 200 at 40 C runs for 1 minute at bypass single phase or three phase load greater than 200 at 40 C The UPS runs for 100 ms when the load is greater than 1000 Table 8 8 System electrical specifications Item Specifications Parallel reliability of power units Redundant parallel signals Parallel ECO function of po...

Page 202: ...wei Technologies Co Ltd 194 9 Optional TN C System Application If the TN C system is adopted short circuit the input N and PE and connect the input PE and N to the terminal on the N bar Recommended cable cross sectional area 240 mm2 Recommended screw M16 Figure 9 1 Short circuiting the input N and PE ...

Page 203: ...is not normal Replace the faulty module 3 Check whether the output or battery is incorrectly grounded 0001 2 Cable connections are incorrect The mains is not normal The mains input fuse for the power module is blown 1 Check whether cables to mains are disconnected loose or incorrectly connected 2 If cable connections are correct measure the mains voltage with a multimeter If the mains voltage is l...

Page 204: ...nnections with a multimeter 2 Check the bypass input frequency Check the rated frequency and frequency range configured on the LCD 0011 1 Bypass phase reversed Minor The phase sequence of the three phase bypass input is reversed Check whether the cable phase sequence is correct using a multimeter If no multimeter is available exchange the positions of any two cables 0012 1 Bypass neutral absent Mi...

Page 205: ...lty 3 Check whether the battery neutral wire is correctly connected 0026 1 Low battery voltage Minor Battery discharge results in low battery voltage The battery neutral wire is not installed properly The charger is faulty 1 If the low battery voltage alarm is generated in battery mode check whether the mains voltage recovers If yes charge batteries immediately 2 Check whether the battery neutral ...

Page 206: ...ck that the configured number of batteries matches the actual number 3 Check that the actual number of batteries meets requirements 0036 2 Battery maintenance reminder Warning The time for maintenance arrives Maintain the batteries 0037 1 Battery undervoltage Critical The UPS has worked in battery mode for an extended amount of time The charger is faulty 1 Check whether the battery voltage is norm...

Page 207: ...r abnormal Critical A load short circuit occurs A short circuit occurs inside the module This fault seldom occurs The output is incorrectly grounded 1 Check load cable distributions 2 Check whether the output is grounded 3 If the load cable connections are normal and the output is correctly grounded replace the power unit or module 0061 2 Inverter alarm Minor The I2C bus is not normal The E2PROM i...

Page 208: ...1 Load impact transfer to byp ass Minor A large power RCD load is instantly connected or the output load short circuits The inverter bridge short circuits 1 Check the load 2 If the load is normal replace the power module 0566 1 Output overload Minor The load is excessive Derating reduces the rated system power The module is damaged 1 Check that there is no overload 2 Check that the module power is...

Page 209: ...e disconnection or short circuit fault 3 Replace the ECM 0583 4 The inter rack industrial frequency synchronization cable is broken Replace the inter rack parallel cable 0583 5 The inter rack carrier synchronization cable is broken 0583 6 The intra rack INVBYP cable is broken The parallel CAN bus is broken 0584 2 Inter rack par cable alarm Minor The inter rack parallel cable is faulty Replace the ...

Page 210: ...d remove some loads or expand the UPS power capacity if the UPS is overloaded Check that the configured rack capacity meets requirements 0090 1 Dry contact board fault Critical I2C communication with the dry contact board MUE05A fails Replace the dry contact board MUE05A 0090 2 I2C communication with the dry contact board MUE06A fails Replace the dry contact board MUE06A 0356 Battery Mode Minor Th...

Page 211: ...aker is OFF The running status is displayed No further measures are required 0340 Maint breaker closed Minor The maintenance circuit breaker is ON The running status is displayed No further measures are required 0335 Generator connected Warning The generator is connected The running status is displayed No further measures are required 0594 1 Insufficient redundant racks Minor The load is excessive...

Page 212: ...N 2 Check that bypass input and output power cables on each rack meet the length requirements 3 Rectify any bypass SCR open circuit 0150 1 Inverter asynchronous Minor The bypass frequency changes fast The output frequency track rate is incorrectly set 1 Check that the bypass output frequency does not change fast 2 Check that the Output freq track rate is properly set 0101 1 BSC signal abnormal Min...

Page 213: ... Issue 04 2019 06 25 Copyright Huawei Technologies Co Ltd 205 Alarm ID Alarm ID Cause ID Alarm Name Severity Cause Solution start the inverter 0380 In self check Warning The inverter is in self check Wait until the inverter self check is complete ...

Page 214: ...rican wire gauge B BSC bus synchronization controller BCB BOX battery circuit breaker box BBB BOX battery bus bar box C CE Conformite Europeenne D DSP digital signal processing E ECO economic control operation EPO emergency power off ECM energy control module EOD end of discharge I IEC International Electrotechnical Commission L LCD liquid crystal display M MDU monitor display unit P ...

Page 215: ...U power distribution unit R RS485 Recommend Standard 485 S SOC state of charge STS static transfer switch SNMP Simple Network Management Protocol T THDi total distortion of the input current waveform THDv total harmonic distortion of output voltage U UPS uninterruptible power system USB Universal Serial Bus V VRLA valve regulated lead acid battery ...

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