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Contents

MR33 Series (75K-600K) Modular UPS

User Manual

Contents

1 Safety Description......................................................................................................................... 1

1.1 Safety Announcements ..................................................................................................................................... 1

1.1.1 Safety Instructions .................................................................................................................................. 1

1.1.2 Use Announcements for Battery ............................................................................................................. 4

1.1.3 Anti-Static Protection .............................................................................................................................. 5

1.1.4 Grounding Requirements ........................................................................................................................ 5

1.1.5 Safety Warning Label Setting ................................................................................................................. 5

1.2 Operation and Maintenance Requirements ...................................................................................................... 5

1.3 Environment Requirements .............................................................................................................................. 7

2 Overview ......................................................................................................................................... 8

2.1 Product Intro..................................................................................................................................................... 8

2.2 Features ............................................................................................................................................................ 8

2.3 Work Principle ................................................................................................................................................ 10

2.3.1 Work Principle Diagram........................................................................................................................ 10

2.3.2 Work Mode ........................................................................................................................................... 10

2.4 Structure ......................................................................................................................................................... 12

2.4.1 Operation Panel ..................................................................................................................................... 13

2.5 Sturcture Layout ............................................................................................................................................. 14

2.5.1 MR3375, MR33125, MR33200, MR33300 (Bottom wiring) ............................................................... 14

2.5.2 MR33200, MR33300 (Top wiring) ....................................................................................................... 15

2.5.3 MR33400, MR33500, MR33600 .......................................................................................................... 16

2.5.4 Power Module ....................................................................................................................................... 16

2.5.5 Bypass Module ...................................................................................................................................... 18

2.5.6 System Control Box .............................................................................................................................. 19

Содержание MR33 Series

Страница 1: ...ular UPS User Manual Remark 32K 210mm 140mm 16K 210mm 285mm 8K 420mm 285mm 130mm 150mm _______ 157g m2 100g m2 105g m2 128g m2 100g m2 _______ WI02 ET 266 _______ _______ _______ _______ Modify Figure...

Страница 2: ...MR33 Series 75K 600K Modular UPS User Manual...

Страница 3: ......

Страница 4: ...the purchase scope or the usage scope Unless otherwise specification in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees o...

Страница 5: ...Please save the manual after reading in order to consult in the future Suitable Model MR3375 MR33125 MR33200 MR33300 MR33400 MR33500 MR33600 Symbol Conventions The manual quotes the safety symbols th...

Страница 6: ...mpting Provides a tip that may help you solve a problem or save time Provides additional information to emphasize or supplement important points in the main text Product standard Q ZZKJ 007 Change His...

Страница 7: ...5 Safety Warning Label Setting 5 1 2 Operation and Maintenance Requirements 5 1 3 Environment Requirements 7 2 Overview 8 2 1 Product Intro 8 2 2 Features 8 2 3 Work Principle 10 2 3 1 Work Principle...

Страница 8: ...3 3 3 Transportation and Unpacking 33 3 3 1 Transportation 33 3 3 2 Unpacking 35 3 4 Mechanical Installation 36 3 5 System Wiring 40 3 5 1 MR3375 MR33125 Compatible with top and bottom incoming wires...

Страница 9: ...6 3 Mode Configuration 73 4 6 4 Function Configuration 75 4 6 5 Communication Setting 78 4 6 6 Debug Set 79 4 6 7 Record Manage 80 4 6 8 HMI Set 80 4 6 9 Password Set 81 4 7 Information Query 82 4 7 1...

Страница 10: ...ystem 97 5 4 3 Emergency Power Off EPO 98 6 Maintenance and Troubleshooting 99 6 1 Maintenance Guide 99 6 1 1 Safety Precautions 99 6 1 2 Preventive Maintenance 99 6 2 Battery Maintenance 100 6 3 Anno...

Страница 11: ......

Страница 12: ...ad the announcements and operation instructions in this section carefully which is to avoid accident The DANGER WARNING CAUTION in the manual are not all the safety announcements that you must abide b...

Страница 13: ...is safe Touching high voltage directly or through damp objects will lead to lethal risk During a lightning storm it is strictly prohibited to perform high voltage and AC operation as well as in the t...

Страница 14: ...ase of fire please use dry power fire extinguisher If using liquid fire extinguisher it may cause electric shock No liquid or other objects are allowed to enter the cabinet Keep good ventilation Ensur...

Страница 15: ...ttery If doubted please consult the manufacturer for support Battery operation must be done according to instructions Battery operation must be done according to instructions especially battery wiring...

Страница 16: ...permanently Before operating please check the electric connection and ensure the device has been connected to earth reliably 1 1 5 Safety Warning Label Setting To avoid irrelevant person close to or...

Страница 17: ...le connection cable labels are in accordance with the actual installation Only authorized professionals are allowed to open the UPS chassis The input and output of UPS are dangerous high voltage Touch...

Страница 18: ...ation about any electronics device in explosive environment is exceeding danger while using or storing the UPS please strictly according to the environment mentioned in the manual The operation enviro...

Страница 19: ...m and precision instrument of financial communication insurance transportation tax army security energy source education government enterprise etc 2 2 Features Hot swappable The power module adopts no...

Страница 20: ...cannot satisfy the user s power supply requirement it will switch to inverter output and this guarantee the reliability of power supply and also save energy Manual maintenance bypass design It design...

Страница 21: ...and maintenance bypass power supply mode Normal mains power supply mode When the mains normal AC power is transformed to DC power by PFC and supply power for inverter While rectifying the AC power in...

Страница 22: ...verter will shut down to avoid damage automatically If mains still normal at this time it will turn to bypass to supply power for load The specific work process is as follows If the inverter circuit f...

Страница 23: ...bypass breaker At this time the inner UPS has no electricity maintainer can perform the maintenance safely 2 4 Structure MR series modular UPS is mainly made up of cabinet operation panel power modul...

Страница 24: ...erved Kehua Hengsheng Co Ltd 13 Figure2 3 Appearance of MR33400 MR33500 MR33600 2 4 1 Operation Panel Figure2 4 Operation panel of MR series modular UPS Table2 1 Illustration for the operation panel N...

Страница 25: ...indicator On green battery low voltage 6 OVERLOAD indicator On red overload 7 ON combination button Press the two buttons for 3s the system will power on 8 OFF combination button Press the two button...

Страница 26: ...Manual 2 Overview All rights reserved Kehua Hengsheng Co Ltd 15 Figure2 5 System layout diagram of MR3375 MR33125 MR33200 MR33300 bottom wiring 2 5 2 MR33200 MR33300 Top wiring Figure2 6 System layout...

Страница 27: ...ar UPS User Manual 16 All rights reserved Kehua Hengsheng Co Ltd 2 5 3 MR33400 MR33500 MR33600 Figure2 7 System layout diagram of MR33400 MR33500 MR33600 open front door 2 5 4 Power Module Appearance...

Страница 28: ...wer module stay in standby status 2 ALARM indicator yellow On power module input voltage abnormal fan abnormal overload etc 3 FAULT indicator red On power module fault 4 Ready switch Place the ready s...

Страница 29: ...0 Appearance of bypass module Operation panel Figure2 11 Operation panel of bypass module Table2 3 Illustration for the operation panel of bypass unit NO Name Illustration 1 RUN indicator green On byp...

Страница 30: ...system will start from battery status 2 5 6 System Control Box The system control box unit is as shown inFigure2 12 Figure2 12 System control box unit Table2 4 Illustration for system control box unit...

Страница 31: ...user s monitor port by network wire Pin definition Pin4 Pin5 3 3V Pin1 TXP Pin2 TXP Pin3 REP Pin6 RXN Pin11 GND 2 E indicator red On communication fault 3 C indicator yellow Flicker communicating 4 R...

Страница 32: ...em has N pieces of UPS the connection needs N pieces of parallel control wire to ensure every UPS has 2 parallel control wires at least to connect which is to enhance the reliability of parallel syste...

Страница 33: ...4 RS232 communication port It supports RS232 communication Pin definition Pin4 Pin6 Tx Pin3 Pin5 Rx 5 MODBUS RS485 communication port The communication protocol supports MODBUS RTU or kehua standard...

Страница 34: ...le withstand voltage is 250V 1A The signal can be set to bypass fault or output overload default is bypass fault Input dry contact Table2 9 Function illustration for input dry contact NO Silk screen S...

Страница 35: ...ge Shut down all inverter output and turns to bypass output Inverter output over voltage Inverter output under voltage Inverter overload protection Parallel system sovereignty fault Parallel system co...

Страница 36: ...he communication of cabinet inner busbar 2 abnormal The communication of cabinet inner busbar 3 abnormal BSC synchronization wire abnormal Battery low temperature alarm The static startup is not allow...

Страница 37: ...ns over voltage Mains under voltage Mains voltage unbalance is too large Mains over frequency Mains under frequency Mains phase sequence is wrong Mains lack phase Mains over current Mains current DC c...

Страница 38: ...and test etc The UPS installation should be performed by authorized person who is special trained and achieve the qualification of high voltage and AC power The UPS is just suitable for installing on...

Страница 40: ...re that the AC input voltage and mains input wire capacity meet the UPS requirements and considering if there has current carrying capacity descending caused by wire aging The mains input voltage rang...

Страница 41: ...as shown in Figure3 2 Figure3 2 Installation space unit mm The installation space requirement for the UPS is the same in above figure we take MR33400 as an example to illustrate Avoid any object bloc...

Страница 42: ...95 Wire terminal model DT35 DT95 Output Output current A 114 189 Recommended wire diameter mm2 U V W N for non linear load it needs to increase the wire diameter of neutral wire 4 35 4 95 Wire termina...

Страница 43: ...ent A 303 455 606 758 909 Recommended wire diameter mm2 U V W N 2 4 70 2 4 95 2 4 150 2 4 185 3 4 240 Wire terminal model DT 70 DT 95 DT 150 DT 185 DT 240 Output Output current A 303 455 606 758 909 R...

Страница 44: ...GB or UL certification The wires quality is excellent and all meet the production compliance The cross sectional areas above are recommended for 5 meters long wires Longer wires require larger cross s...

Страница 45: ...packing it is suggested to package the UPS with original plastic bag The UPS can be transported by motor driven forklift as shown in Figure3 3 or manual forklift as shown in Figure3 4 While lifting pl...

Страница 46: ...k the external package Remove the foam pad and plastic bag and take out the accessories and built in documents Step 4 Check the UPS Inspect the appearance of the UPS and check if there has any damage...

Страница 47: ...den bracket by socket wrench the bolt position is as shown in Figure3 6 Figure3 6 Bolt position End 3 4 Mechanical Installation In this section we take ground installation as an example to illustrate...

Страница 48: ...e The recommended wiring groove size is as follows for MR3375 MR33125 MR33200 MR33300 A D H 650 200 300 mm for MR33400 MR33500 MR33600 A D H 245 500 300 mm Step 1 Determine and plan the installation p...

Страница 49: ...ole size as shown in Figure3 10 Figure3 11 If the UPS is installed on U steel drill 4 hole hole diameter is 14 on the U steel directly and then perform Step 4 directly Figure3 10 Bottom size of MR3375...

Страница 50: ...higher than ground which is to avoid effect the following cabinet installation The outer height of expansion bolts should be within the range of 30 50mm Step 4 Move the UPS from wooden bracket to the...

Страница 51: ...ng There are two types of MR3375 MR33125 MR33200 MR33300 UPS with up and bottom wiring The MR33400 MR33500 MR33600 UPS are compatible with top and bottom wiring 3 5 1 MR3375 MR33125 Compatible with to...

Страница 52: ...heng Co Ltd 41 Step 2 Connect the input output and battery wires according to Figure3 16 and fasten the bolts Figure3 15 Inlet and outlet schematic diagram Figure3 16 Wiring terminal It is suggested t...

Страница 53: ...connection diagram Step 3 After finishing the wire connection install the bottom wiring cover plate and fill the empty party with insulation fireproofing mud then the wiring is completed Figure3 18 W...

Страница 54: ...wire 1 neutral wire 2 neutral wire 4 neutral wire 5 ground wire 1 of MR3375 MR33125 Top wiring from the left side of the UPS Output wires neutral wire 3 ground wire 2 of MR3375 MR33125 Top wiring fro...

Страница 55: ...er Manual 44 All rights reserved Kehua Hengsheng Co Ltd Figure3 20 Remove the sealing plate schematic diagram Step 2 Connect the input output and battery wires according to Figure3 21 and fasten the b...

Страница 56: ...22 Wiring diagram It is suggested to equip DC breaker for battery DC input specific wire connection is as shown in Figure3 23 Figure3 23 Battery wire connection diagram Step 3 After finishing the wir...

Страница 57: ...MR33500 MR33600 Step 1 Open the front door of distribution cabinet place the input switch POWER output switch OUTPUT maintenance switch MAINTENANCE bypass switch BYPASS to OFF as shown in Figure3 25 F...

Страница 58: ...reserved Kehua Hengsheng Co Ltd 47 Figure3 26 Dismantle the wiring cover plate of distribution cabinet Step 3 Connect the input output and battery wires according to Figure3 27 in proper order and th...

Страница 59: ...cables onto the front isolation beam of the cabinet shipshape It is suggested to equip DC breaker for battery DC input specific wire connection is as shown in Figure3 28 Figure3 28 Battery wire conne...

Страница 60: ...600K Modular UPS User Manual 3 Installation All rights reserved Kehua Hengsheng Co Ltd 49 Figure3 29 Wiring diagram of distribution cabinet top wiring Figure3 30 Wiring diagram of distribution cabine...

Страница 61: ...el system BSC PARALLEL NORMAL ALARM FAULT BSC PARALLEL NORMAL ALARM FAULT UPS 1 UPS 2 BSC PARALLEL NORMAL ALARM FAULT BSC PARALLEL NORMAL ALARM FAULT System control card System control card Figure3 31...

Страница 62: ...3 Parallel system connection diagram of MR3375 MR33125 MR33200 MR33300 top wiring The wire color above is just used to distinguish the different ports the actual wire color may not be the same as show...

Страница 63: ...t used to distinguish the different ports the actual wire color may not be the same as shown in the figure s Parallel system connection of MR33400 MR33500 MR33600 Figure3 35 Parallel system connection...

Страница 64: ...distribution unit is complete Yes No 4 Check if the wire connection point is firmly Yes No 5 Check if the battery is connected in right polarity and sequence Yes No 6 Check if the cable identificatio...

Страница 65: ...engsheng Co Ltd 3 7 3 Connect Load After the UPS starting and working stably turn on the load Start big power devices before small power ones Some devices has large starting current which may cause ov...

Страница 66: ...interval time Charge setting Test status discharge current discharge capacity discharge time Battery test Generator Starting mode generator charging output charger power setting generator battery low...

Страница 67: ...ser can monitor the system conveniently The icon meaning on the main page is as follows System bypass input When bypass input abnormal the icon flickers and shows as System mains input When mains inpu...

Страница 68: ...n the main page shows the system running status and module running condition directly 4 3 System Work Status Display The system work status includes initializing fault protection shutdown exit paralle...

Страница 69: ...4 Touch Screen Operation and Setting MR33 Series 75K 600K Modular UPS User Manual 58 All rights reserved Kehua Hengsheng Co Ltd Figure4 4 Fault protection with no output Figure4 5 Shutdown...

Страница 70: ...MR33 Series 75K 600K Modular UPS User Manual 4 Touch Screen Operation and Setting All rights reserved Kehua Hengsheng Co Ltd 59 Figure4 6 Exit parallel system Figure4 7 Bypass output...

Страница 71: ...4 Touch Screen Operation and Setting MR33 Series 75K 600K Modular UPS User Manual 60 All rights reserved Kehua Hengsheng Co Ltd Figure4 8 Battery INV output Figure4 9 Mains INV output...

Страница 72: ...MR33 Series 75K 600K Modular UPS User Manual 4 Touch Screen Operation and Setting All rights reserved Kehua Hengsheng Co Ltd 61 Figure4 10 Grid connected aging running Figure4 11 ECO bypass output...

Страница 73: ...uch Screen Operation and Setting MR33 Series 75K 600K Modular UPS User Manual 62 All rights reserved Kehua Hengsheng Co Ltd Figure4 12 Frequency conversion INV output Figure4 13 Maintenance bypass out...

Страница 74: ...in page will show fault alarm indicator click the fault alarm it will show the current fault information as shown in Figure4 15 Figure4 15 Current fault information page 4 4 Buzzer Control Function Wh...

Страница 75: ...tem bypass information page as shown in Figure4 16 In the page it shows the bypass three phase voltage current active power apparent power and frequency Figure4 16 Bypass information 4 5 2 Mains Infor...

Страница 76: ...sitive and negative battery group voltage charge discharge current remaining capacity battery remaining time battery temperature battery status It shows the charging current or discharging current acc...

Страница 77: ...the charging current or discharging current according to battery charge discharge status as shown in Figure4 19 Figure4 19 Battery information page 4 5 4 Power Module Information In main page click ic...

Страница 78: ...shown in Figure4 21 Click Select Module it can check the information of each power module Figure4 21 Inverter module information 4 5 6 Output Information In main page click icon it will enter system o...

Страница 79: ...k icon it will enter user login page as shown in Figure4 23 Figure4 23 Use login page After entering right password the icon will show as Click the left icon it will turn to setting interface as shown...

Страница 80: ...it will enter system manage page as shown in Figure4 25 System manage includes system setting bypass setting Click enter box to change parameter Click save button to save the setting System setting F...

Страница 81: ...ng page as shown in Figure4 28 Click enter box such as the max time turn INV to bypass synchronous ms it will show as Figure4 29 At the top of the enter box it shows the setting range once setting exc...

Страница 82: ...ng management page click Battery Manage icon it will enter battery manage page as shown in Figure4 30 Figure4 31 The page includes battery setting charging setting battery test Click enter box to chan...

Страница 83: ...ure4 31 Battery setting 2 Charging setting Click Charging Setting it will turn to charging setting page as shown in Figure4 32 Figure4 33 Click enter box to change the parameter Click Save button to s...

Страница 84: ...est page as shown in Figure4 34 Figure4 34 Battery test 4 6 3 Mode Configuration In setting management page click Mode config icon it will enter mode configuration page The page includes parallel conf...

Страница 85: ...36 Click enter box to change the setting Click Save button to save the setting The mark of setting success and setting failure is the same as that of system setting Figure4 36 ECO setting page Click S...

Страница 86: ...wn in Figure4 38 Click enter box to change the setting Click Save button to save the setting The mark of setting success and setting failure is the same as that of system setting Figure4 38 Other mode...

Страница 87: ...iton configuration page click Generator it will enter the generator configuration page as shown in Figure4 39 Click Save button to save the setting The mark of setting success and setting failure is t...

Страница 88: ...td 77 Figure4 40 Dedusting configuration Start delay configuration Click StartDelay it will enter the delay starting configuration page as shown in Figure4 41 Click Save button to save the setting The...

Страница 89: ...2 Click Save button to save the setting The mark of setting success and setting failure is the same as that of system setting Figure4 42 Dry contact configuration 4 6 5 Communication Setting In settin...

Страница 90: ...ng Co Ltd 79 Figure4 43 Communication setting 4 6 6 Debug Set In setting management page click Debug Set icon it will enter debug set page as shown in Figure4 44 Click Save button to save the setting...

Страница 91: ...click Record Manage icon it will enter record manage page as shown in Figure4 45 Figure4 46 Click Save button to save the setting The mark of setting success and setting failure is the same as that of...

Страница 92: ...eal time which is to keep the veracity of system event log and master the system status of some time and maintain conveniently 4 6 9 Password Set In setting management page click Password Set icon it...

Страница 93: ...ies 75K 600K Modular UPS User Manual 82 All rights reserved Kehua Hengsheng Co Ltd Figure4 48 Password setting 4 7 Information Query In main page click icon it will enter information query page as sho...

Страница 94: ...overed by new one All records are ranked in inverted order of time 4 7 1 Event log In information query page click Event log icon it will enter event log page as shown in Figure4 50 This page records...

Страница 95: ...served Kehua Hengsheng Co Ltd Figure4 51 User log 4 7 3 Device Information In information query page click Device Info icon it will enter device information page This page shows the S N product name m...

Страница 96: ...d Kehua Hengsheng Co Ltd 85 Figure4 53 Product information 2 Figure4 54 Product information 3 When the probation function is enabled the device status shows as Lock as shown in Figure4 55 At this time...

Страница 97: ...bled 4 8 ON OFF In main page click icon it will enter ON OFF page when the system is OFF click the icon to enter the confirm page as shown in Figure4 56 click OK button to perform the start operation...

Страница 99: ...ad protection it is better to start this equipment before others If the UPS needs to be shut down turn off the load first When mains power outage if the UPS is power supplied by generator it is necess...

Страница 100: ...t and output Step 4 Measure the AC voltage of mains input terminal and the voltage should be in the range of 80V 280V or it only can be started from battery status Step 5 Measure the DC voltage of bat...

Страница 101: ...erter by touch screen 2 In main page of touch screen click icon it will enter the ON OFF page as shown in Figure5 2 click OK to perform the start operation Figure5 2 ON OFF page Step 5 After start the...

Страница 102: ...Shut down the inverter Shut down the inverter by panel OFF combination button 1 Long press the panel OFF combination button for 3s system will turn to bypass supply power from inverter output Check t...

Страница 103: ...exceeds the setting value shutting down the inverter will cause system without output and the power supply for load will be interrupted 5 3 5 Switch to Maintenance Bypass Mode From Normal Output Unles...

Страница 104: ...e that the system bypass input is normal Step 1 Close the BYPASS switch POWER switch external battery breaker OUTPUT switch successively Step 2 After the power supply normal and the energy flow on tou...

Страница 105: ...supply for load is interrupted When the system stay in maintenance bypass status after pressing EPO button the UPS still has output 5 3 8 Emergency Power Off Recovery Step 1 Ensure that the dry contac...

Страница 106: ...t the battery to parallel system Step 4 After the monitor interface of each UPS without abnormal alarm close the battery input breaker of each UPS if there are many groups battery it needs to close th...

Страница 107: ...witch of other UPS disconnected keep the multimeter in AC position one pen connect with the output switch front end phase A of UPS2 the other pen connect with the output switch back end phase A of UPS...

Страница 108: ...ill turn to bypass power supply mode if the system bypass is abnormal after shutting down the UPS the system will turn to no output mode the system output is outage Before shutting down please ensure...

Страница 109: ...tem the UPS will shut down and close all output Multi UPS running in parallel EPO linkage is enabled Press the EPO button of the UPS or the EPO button of total system all the paralleled UPS will shut...

Страница 110: ...tays in safe status Before close the battery breaker at any time use a multimeter to measure if the voltage of wiring terminal is normal and the polarity is reverse connected If the result is abnormal...

Страница 111: ...t also needs to charge the battery every 3 months and the charge time of each time cannot less than 24h Clean battery shells by cloth Oil and organic solvents such as petrol and diluents are prohibite...

Страница 112: ...he requirement or overload Table6 1only includes some simple diagnosis If the diagnosis is not clear or not sufficient to solve the problem please contact with local agency or dealer to deal with Tabl...

Страница 113: ...e the UPS shut down automatically This phenomenon is normal Once mains normal system will start and charge battery automatically Warning if the battery stays in under voltage status for long time it w...

Страница 114: ...cy Dispose for System Fault How to deal with the system fault in emergency When system fault shut down the power supply of UPS by the touch screen if necessary close the user load and disconnect the i...

Страница 115: ...ect is not allowed to shipping with the device While midway transportation do not put the device in the open air The device cannot suffer any rain snow or liquid material or mechanical damage 7 3 Stor...

Страница 116: ...need to decrease rated power to use Vin 80Vac 175Vac for linear load it is necessary to decrease rated power to use Input frequency range Hz 40 70 Bypass synchro tracking range Hz 50 60 6 Bypass inpu...

Страница 117: ...alance load 1 Wave form distortion THDv Linear load 1 non linear load 4 Bypass inverter transform time ms Synchro 0 Unsync 15 System efficiency 96 Overload capacity For less than 105 load it runs for...

Страница 118: ...m function Alarm for input abnormal battery low voltage overload fault etc Communication function Provide dry contact communication RS232 RS485 MPDBUS and it can select SNMP optional to realize the sm...

Страница 119: ...m upside and downside it cannot be changed in customer site Supports wiring from upside wiring from downside is optional Weight kg Cabinet without module 155 Power module 33 Bypass module 20 Cabinet w...

Страница 120: ...and downside Supports wiring from upside and downside Supports wiring from upside and downside Weight kg Cabinet without module 427 Power module 33 Bypass module 27 Cabinet without module 427 Power m...

Страница 121: ...Manual 110 All rights reserved Kehua Hengsheng Co Ltd C Acronyms and Abbreviations A AC Alternating Current D DC Direct Current DSP Digital Signal Processor E ECO Energy Control Operation EPO Emergen...

Страница 122: ...ms and Abbreviations All rights reserved Kehua Hengsheng Co Ltd 111 RS232 Recommend Standard 232 RS485 Recommend Standard 485 S SNMP Simple Network Management Protocol T THDv Total Harmonic Distortion...

Страница 123: ...4402 02833 004...

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