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Acuvim L Manual - K

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1. EET E us Se 35 90 le 96 00 50 70 Front view Side view Fig 2 2 Dimensions of Acuvim L Maand 2 2 Installation of Acuvim L A Note Temperature and humidity of the environment must accord with the requirement of acuvim L Otherwise it may cause the meter damaged Environment Please check the environmental temperature and humidity according to Acuvim L s requirement to ensure the power meter can work well 1 Temperature Operation 20 C to 70 C Storage 40 to 85 C 2 Humidity 5 to 95 No condensation 3 Location Acuvim L power meter should be installed in dry environment with no dust and kept away from heat radiation and high electrical noise source Installation steps Normally Acuvim L is installed on the panel of the switch gear 1 firstly cut a square or round hole which according to the standard of DIN or ANSI on the panel of the switch gear The cutting size shows as Fig 2 3 unit mm Cutting Panel LT 101 6 98 929 Panel lt Fig 2 3 Panel cutting 2 secondly remove the clips from the meter and put Acuvim L into the square hole from the front side Panel Panel Fig 2 4 Put the meter into the square 3 Finally put the clips to the meter from backside and push the clip tightly so that the
2. 0600 0601 Frequency F Float R 0602H 0603H Phase voltage V1 Float R 0604 0605 Phase voltage V2 Float R 0606H 0607H Phase voltage V3 Float R 0608H 0609H Line voltage V12 Float R 060 060 Line voltage V23 Float R 060CH 060DH Line voltage V31 Float R 060 060 Phase line current 11 Float R 0610H 0611H Phase line current 12 Float R 0612H 0613H Phase line current 13 Float R 0614 0615 Neutral line current In Float R 0616H 0617H Phase power Pa Float R 0618H 0619H Phase power Pb Float R 061AH 061BH Phase power Pc Float R 061CH 061DH System power Pcon Float R 061EH 061FH Phase reactive power Qa Float R 0620 0621 Phase reactive power Float R 0622H 0623H Phase reactive power Qc Float R 0624H 0625H System reactive power Qcon Float R 0626H 0627H System apparent Scon Float R 0628H 0629H Phase power factor PFa Float R 062AH 062BH Phase power factor PFb Float R 062CH 062DH Phase power factor PFc Float R 062 062 System power Float R 0630 0631 Voltage unbalance factor U_unbl Float R 0632H 0633H Current unbalance factor unbl Float R 0634 0635 Reserved 68 0636 0637 Reserved 0638 0639 Reserved 063AH 063BH Reserved 063CH 063DH Reserved 063EH 063FH Reserved 0640 0641 power demand DEMA Float R 0642 0643 reactive power demand Float R 0644H 0645H Phas
3. 0100H code word 0 9999 R W Communication address word 0 247 R W Baud rate word 1200 38400 R W Voltage input wiring type word 0 3Ln 1 2ln 2 2LL 3 3LL R W Current input wiring type word 0 3 1 1 2 2 R W m 2 DWord 50 0 1000000 0 R W PT2 Word 50 0 400 0 R W CT1 Word 1 50000 R W CT2 Word 5 R W Definition of reactive power word 1 R W time of back light word 0 120 R W Time of Demand slid window word 1 30 R W Clear Max Word clear R W Clear energy enable Word O disable 1 enable R W 0 do not clear Clear energy Word clear R W Clear run time Word clear R W Table 4 18 Data address of setting parameter Note 1 data type Word unsigned integer of 16 bit Integer signed integer of 16 bit DWord unsigned integer of 32 bit Float float data of 32 bit 2 type of access R read only data read by using function code 03 R W read and write data read by using function 03 and written by using function code 16 It is forbidden to write data address which dose not possesses property to be written 3 Energy and run time Energy and run time data is represented in 32 bit Both high 16 bit and low 16 bit have successive address alone The high 16 bit should be multiplied by 65535 and plus low 16 bit data to get the energy and run time data in master software The unit is 0 1kWh 0 1kVarh and 0 1hou
4. 1 1 1 Characteristics of Acuvim L 2 1 2 Application fields 1 3 Acuvim L 5 Chapter 2 5 2 1 Appearance and Dimensions of Acuvim L 8 2 2 Installation of 10 2 3 Wiring connection of 12 Chapter 3 Meter Operations and Parameter Setting 29 3 1 Display panel and keys 3 2 Metering data reading 3 3 Statistics Display 3 4 System parameter setting of Acuvim L 43 3 5 DO parameter setting of Acuvim L 49 3 6 Introduction of measurement and functions of Acuvim L 55 Chapter 4 1 59 4 1 Introducing Modbus protocol 60 4 2 Modbus 61 4 3 Format of communication 63 4 4 Data address table of Acuvim L 65 Appendix A Technical data and Specification 7
5. 400 Continental Blvd Suite 600 El Segundo CA90245 USA hitp wwW accuenergy com Beijing Accuenergy Technelegy Co Ltd Manufacturer 1 F Bldg 3 No 8 Shangai Chuangye Rd Haidian District Beijing 10085 P RERIna Tel 86 10 51290033 486 40 62972073 http yww accuenergy cn
6. Table 4 2 Function code Data field The data field is constructed using sets of two hexadecimal digits in the range of 00 to FF hexadecimal The data field of messages sent from a master to slave devices contains additional information which the slave must use to take the action defined by the function code This can include items like discrete and register addresses the quantity of items to be handled and the count of actual data bytes in the field For example if the master requests a slave to read a group of holding registers function code 03 the data field specifies the starting register and how many registers are to be read If the master writes to a group of registers in the slave function code 10 hexadecimal the data field specifies the starting register how many registers to write the count of data bytes to follow in the data field and the data to be written into the registers If no error occurs the data field of a response from a slave to a master contains the data requested If an error occurs the field contains an exception code that the master application can use to determine the next action to be taken The data field can be nonexistent of zero length in certain kinds of messages 6 Error Check Field Messages include an error checking field that is based on a Cyclical Redundancy Check CRC method The CRC field checks the contents of the entire message It is applied regardless of any pari
7. Acuvim L Fig 2 17 1 Frequently used wiring method The voltage and current wiring method are put together in one drawing The Acuvim L meter will display normally only that the setting of the meter is assorted with the wiring of the voltage and current input 1 3LN 3CT with 3 CTs Wiring mode 3Ln 3CT LINE A BC 1AFUSE me Terminal block 1 111 2 2 come oe LOAD QD m 68 131 132 V 6600 w vs V2 VI Acuvim L Fig 2 18 3Ln 3CT with 3CTs qm L 132 iS Y 22 2 with 2 CTs Wiring mode LINE A B C N 1AFUSE Terminal block 3 s Om 2 2 12 39un e 02 Acuvim L LOAD 4 09 131 Lg 132 X Fig 2 19 with 2CTs 3 2LN 2CT Wiring mode 2Ln 2CT LINE A 1A FUSE 4 5 1 5 BEC mE Terminal block fom 0000 Va Vi LOAD come Acuvim L Fig 2 20 2Ln 2CT 4 2LN 1CT Wiring mode 2Ln 1CT LINE A BCN 1AFUSE om OO d va Vi 2 112 OU Aouvim L HY 122 131 L 132 LOAD Ps dy Fig 2 21 2Ln 1 5 2LL Wiring mode 2LL
8. Keep communication cables away as much as possible from sources of electrical noise Use RS232 RS485 or USB RS485 converter with optical isolated output and surge protection 2 Chapter 3 Meter Operation N and Parameter Setting Display panel and keys Metering data reading Statistics display Meter Parameter Setting Introduction of measurement and functions 29 eant d Detail human machine of the meter will be described in this chapter This includes how to get the metering data and set the parameter of the meter 3 1 Display panel and keys There are one display panel and four keys in front of Acuvim L All display segments are shown as Fig 3 1 below D e my Lid N88 A Demand AF Ey acus zT 5 gt Li LI Mmmm Li X g SE IU 2 LI 5 23 Fig 3 1 display segments 30 Display metering data 1 TES lines of letter Voltage current power power factor THD in the metering area frequency demand unbalance factor max min etc Status display area Display currant status 2 One line letter at Meter metering status Max maximum value Min minimum value THD display THD Har display data the top of display panel harmonic Item label Y voltage 1 Current P active power
9. LINE A BC TAFUSE 3 1 4 3E 5 Terminal block Im 9 0 va CL Om Acuvim L 02 131 3H LOAD Fig 2 22 2LL 3CT 23 i N 6 2LL 2CT Wiring mode 2LL 2CT LINE A BC TAFUSE e F X D Terminal block gt rom t 2 Acuvim L Ow 3 i 131 o 2 p LOAD Y Fig 2 23 211 2CT 7 2LL 1CT Wiring mode 2LL 1CT LINE A B C 1AFUSE d 4 EES 67 Terminal block E om 666 Ww Va o O M2 Acuvim L Fm 2 2 H 132 LOAD N Fig 2 24 211 1 24 8 Single Phase 2 Line wiring mode LINE N 1AFUSE vv Terminal block 0000 LOAD Ww va Va Vi 2 Acuvim L Fig 2 25 Single Phase 2 Lines 9 Single Phase 3 Line Wiring mode 3LN 3CT LINE A N B 1AFUSE Terminal block 0000 Va Vi LOAD Acuvim L Fig 2 26 Single Phase 3 Lines 25 2 Digital output DO There are two digital outputs for Acuvim BL The terminals of the digital output are DO1 DO2 14 15 and DOC 16 These two digital outputs can be used as energy pulse output or over limit alarm
10. go to the next screen Fig 3 13 import energy The 2 screen display the generation energy Ep_exp 1 8kwh as in Fig 3 14 Press E go to the next screen Fig 3 14 Export reactive energy 314 screen display the inductive reactive energy Eq_imp 3 9kvarh as in Fig 3 15 Press E go to the next screen Fig 3 15 import reactive energy The 4 screen display the capacitive reactive energy Eq_exp 1 5kvarh as in Fig 3 16 Press E go to the next screen Fig 3 16 Export reactive energy 5 screen display the run time As in Fig 3 17 Run_Hour 12 3 hours Press E go back to the 1 screen Fig 3 17 Run time Press H key display data of power quality The 1 screen display THD of voltage The display will be THD of line to line voltage THD_U12 THD_U23 THD_U31 when the wiring of voltage input is 211 3LL The display will be THD of phase voltage THD_U1 THD_U2 THD_U3 when the wring of the voltage input is 2LN or 3LN Fig 3 18 Voltage THD of phase As in Fig 3 18 THD_U1 2 32 THD_U2 2 35 THD_U3 2 28 Fig 3 19 Voltage THD of line to line Fig 3 20 Current THD 3 3 Statistics Display 38 When the wiring of the voltage is set to be 2LL or 3LL the display will be THD of line to line voltage As in Fig 3 19 THD_U12 2 30 THD_U23 2 28 THD_U31 2 25 Press H key go to the next screen 2 scree
11. Fig 3 34 Baud rate setting page Fig 3 32 is the access code page The 1 screen setting Acuvim L address page for commutation purpose It is any digit number from 1 247 it s shown as Fig 3 33 the address of Acuvim L is 1 Press H to move the cursor to the digit that needed to be changed press P for increasing and press E for decreasing press for the acknowle dgment Note every meter should have different address according to the Modbus RTU protocol in the same RS 485 net The 2 screen baud rate setting page The asynchronous communication setting of Acuvim L is 8 bit no parity 1 start bit and 1 stop bit Baud rate can be set as follows 1200 2400 4800 9600 19200 38400 Press P or E to change the baud rate Press V A go to the next screen Fig 3 35 Voltage input wiring Fig 3 36 Current input wiring Fig 3 37 PT primary 3 d screen voltage input wiring setting page Voltage input could be one of four modes 3Ln 2Ln 2LL and 3LL As in Fig 3 35 the voltage input mode is set to 3Ln Press V A go to the next screen The 4 screen current input wiring setting page Current input could be one of three modes 3Ct 1Ct and 2Ct As in Fig 3 36 the current input mode is set to 3Ct Press V A go to the next screen The 5 screen PT primary rating voltage PT1 setting page The value range of PT1 is from 50 0 1000 000 0 Unit is volt As in Fig
12. 2 Safety IEC61010 1 UL61010 1 EMC 61000 4 2 3 4 5 6 8 11 Dimension DIN43700 ANSI C39 1 79 Output form Photo MOS Form A Max voltage 250 300 50 Optical isolation 2500 Vac Rms Type RS485 2 wire half duplex optical isolated Protocol Modbus RTU Baud rate 1200 38400 bps Dimensions mm 96x96x51 cutting out 92x92 or 4inch Round Protection level IP52 front IP30 cover Weight 350g Operating Temp range 25 C 70 C Storage temp range 40 C 85 C Humidity 0 95 non condensation Power supply 100 415 50 60Hz 100 300 Power consumption 3W Appendix Ordering Information 01 A Acuvim AL Basic model B Acuvim BL Basic models2DO C Acuvim CL Basic model RS 485 Note 1 5A of the current input is the standard product Please contact factory if 1A current needed 2 The range of power supply 100 415Vac 50 60Hz 100 300Vdc Please contact factory if low DC voltage power supply needed 81 d Appendix C Revision History 1 0 20070915 Add primary data address table of basic measurements I 20010450 data and Statistics measurements data 82 Your Power and Automation Partner ALTUEVEAGY
13. 3 37 PT1 380 0V press H E and P to change the value Press V A key for acknowledgement and go to next page Maand Maand 46 Fig 3 38 PT secondary The 6 screen PT secondary rating voltage PT2 setting page The value range of PT2 is from 50 0 400 0 Unit is Volt As in Fig 3 38 PT2 380 0V press and to change the value Press V A key for acknowledgement and go to next page Note If there is no PT on the voltage input side of Acuvim L the PT1 and PT2 should be the same and equal to the input rated voltage Fig 3 39 CT primary Fig 3 40 CT secondary The 7 screen CT primary rating current CT1 setting page CT1 is an integer from 5 50000 Unit is Amp As in Fig 3 39 CT1 5A press and to change the value Press V A key for acknowledgement and go to next page The 8 screen CT secondary rating current CT2 setting page CT2 is a constant equal 5 unit is Amp If 1A specification needed it should be ordered As in Fig 3 40 CT1 5A Press V A key go to next page Fig 3 41 Definition of reactive power Fig 3 42 Back light on time Fig 3 43 Sliding windows time The 9 screen definition setting of reactive power 0 sinusoidal reactive power 1 Budeanu s reactive power Please refer to lt lt Introduction of measurement and functions of Acuvim L gt gt for de
14. 4 Data address table of Acuvim L Basis measurements The data address of basis measurements includes primary data address and secondary data address Function code 03 read 65 66 0130H Frequency 0 65535 word R 0131H phase voltage V1 0 65535 word R 0132H phase voltage V2 0 65535 word R 0133H phase voltage V3 0 65535 word R 0134H Line voltage V12 0 65535 word R 0135H Line voltage V23 0 65535 word R 0136H Line voltage V31 0 65535 word R 0137H Phase line current 11 0 65535 word R 0138H Phase line current 12 0 65535 word R 0139H Phase line current 13 0 65535 word R 013AH Neutral line current In 0 65535 word R 013BH Phase power 32768 32767 Integer R 013CH Phase power Pb 32768 32767 Integer R 013DH Phase power Pc 32768 32767 Integer R 013EH System power Pcon 32768 32767 Integer R 013FH Phase reactive power Qa 32768 32767 Integer R 0140H Phase reactive power Qa 32768 32767 Integer R 0141H Phase reactive power Qb 32768 32767 Integer R 0142H System reactive power Qcon 32768 32767 Integer R 0143H System Apparent power Scon 0 65535 word R 0144H Phase power factor PFa 1000 1000 Integer R 0145H Phase power factor PFb 1000 1000 Integer R 0146H Phase power factor PFc 1000 1000 Integer R 0147H System power factor PFcon 1000 1000 Integer R 0148H Voltage unba
15. need to press P and E simultaneously to exit and back to system parameter setting mode press H and V A simultaneously to exit the system pentameter setting mode and enter the metering data display page The following figures show how to set the DO items 1 screen DO1 output mode setting page 0 pulse output 1 alarm output As Fig 3 49 DO1 is set as pulse output mode Press V A key for acknowledgement Fig 3 49 DO1 output mode and going to next page setting The 274 screen 002 output mode setting page 0 pulse output 1 alarm output As Fig 3 50 DO2 is set as alarm output mode Press V A key for acknowledgement Fig 3 50 DO2 output mode and going to next page setting Fig 3 51 DO pulse rate Fig 3 52 DO pulse width Fig 3 53 DO1 output items Y 3 screen Pulse rate setting page Pulse rate means the energy value pulse It can be the integer of 1 to 6000 One digit is 0 1kWh or 0 1kVarh As Fig 3 51 the pulse rate is 10 The 4 screen the DO pulse width setting The DO pulse width is integer from 1 to 50 One digit is 20ms As in Fig 3 52 the pulse width is set to 5 that is 5x20 100ms Press V A key for acknowledgement and going to next page 5 screen 001 output item setting The DO1 output can be one of the following energy items shown in table below As in Fig 3 53 DO1 has no pulse output It
16. q reactive 3 jitem label power PF power factor when display harmonic rate the little 8 letter displays harmonic number 4 3 phase unbalance Unb Unbalance label W Capacitor label capacitive load 3 Load nature 4 Inductor label inductive load 6 Energy label E Imp consumption energy exp generating energy Communication indicator No label no communication 7 With label communication Energy pulse 8 loutput indicator 1 1 ith label pulse outpu 9 Time label Run Hrs With label display running time Indicate data unit Voltage V kV Current kA A Power kW and MW 10 Unit Reactive Power kvar and Mvar Apparent Power kVA and MVA Frequency Hz Energy kWh Reactive Power kvarh Percentage 96 There are four delicate keys in the front panel labeled as H P E and V A from left to right Use these four keys to read metering data and set the parameters 3s 32 2 Metering data reading Normally Acuvim L displays the metering data such as voltage current power etc There are several key patterns press key press key P press key E and press key V A press key and key E simultaneously Press V A to read voltage and current in the metering area The screen will roll to the next display as you press V A each time It will go back to the first screen if you press V A at the last screen The 1 screen display U1
17. voltage Fig 3 25 Max value of current Fig 3 26 Min value of current The 4 screen display the Min value of line to line voltage As in Fig 3 24 U12_Min 657 8V U23_Min 657 7V U31 Max 657 6V Press go to the next screen The 5 screen display the Max value of current As in Fig 3 25 1 2 502 12_Max 2 503A 2 502 Press V A go to the next screen The 6 screen display the Min value of current As in fig 3 26 1 2 498 12 2 496 2 497 Press V A go to the next screen The 7 screen display the Max value of current demand As in fig 3 27 11_Demand_Max 2 505A 12_Demand_Max 2 504A Demand 2 504 Press V A key go back to the 1st screen Fig 3 27 Max value of demand current 3 3 2 Display the Max value of power and reactive power demand Press P key under the statistics display mode to display the Max value of power and reactive power demand As in Fig 3 28 P_Demand_Max 1 435kW Q Demand Max 2 478kvar Note when the wiring of voltage input Fig 3 28 value of demand 1 set to 2LL or 3LL there is no the 1st and power and reactive power 2nd screen 3 3 3 Display power quality parameter Press H key under the statistics display mode to display the unbalance factor of voltage and current and harmonic rate of voltage and current The 1 screen display three pha
18. 3 0 10000 word R Harmonic content of V1 or V12 0406H 0413H 2nd 15th 0 10000 word R Harmonic content of V2 or V23 0414 0421 2nd 15th 0 10000 word 31 0422 042 2nd 15th 0 10000 word R 0430H 043DH Harmonic content of 11 2nd 15th 0 10000 word R 043EH 044BH Harmonic content of I2 2nd 15th 0 10000 word R 044 0459 Harmonic content of 2nd 15th 0 10000 word R Table 4 13 Data table of Power quality measurements The relationship between numerical value register of Acuvim L and i the real physical value is as following table Rx is numerical value in register of Acuvim L THD THD Rx 10000x100 5 NA Harmonic content THDn Rx 10000x100 NA Table 4 14 Conversion relationship of Power quality measurements Statistics measurements The data address of Statistics measurements includes primary data address and secondary data address Function code 03 read of V1 V1 max 0 65535 word R 0461H Max of V2 2 max 0 65535 word R 0462H Max of V3 V3 max 0 65535 word R 0463H Max of V12 12 max 0 65535 word R 0464H Max of V23 V23 max 0 65535 word R 0465H Max of V31 V31 max 0 65535 word R 0466H Max of 11 11 max 0 65535 word R 0467H of I2 2 max 0 65535 word R 0468H of max 0 65535 word R 0469H Max of power demand PDmd_max 32768
19. 32767 integer R 046AH Max of reactive power demand 32768 32767 integer R QDmd_max 046BH Max of current demand la 0 65535 word laDEMA_max 046CH of current demand 0 65535 word IbDEMA_max 046DH Max of current demand Ic 0 65535 word ICDEMA max 72 046 reserved 046 reserved 0470H Min of V1 V1 min 0 65535 word R 0471H Min of V2 V2 min 0 65535 word R 0472H Min of V3 V3 min 0 65535 word R 0473H Min of V12 V12 min 0 65535 word R 0474H Min of V23 V23 min 0 65535 word R 0475H Min of V31 V31 min 0 65535 word R 0476H Min of 11 min 0 65535 word R 0477H Min of I2 12 min 0 65535 word R 0478H Min of I3 min 0 65535 word R 0479H reserved 047 reserved 047 reserved 047CH Run time High 16 bit 047DH Run time Low 16 bit 95999999999 R Table 4 15 Secondary data address of Statistics measurements The relationship between numerical value in register of Acuvim L and the real physical value is as following table Rx is numerical value in register of Acuvim L The data formant of statistics measurements is the same as that of Basis measurements except for run time of meter the conversion relationship refers to Table 4 8 The table below is the conversion relationship for run time Run time of meter Run_Hour Rx 10 Hour Table 4 16 Conver
20. 5kW P2 0 475kW P3 0 474kW Inductive load communication status is normal Press go to the next screen The 2 screen display the reactive power of each phase As in Fig 3 8 Q1 0 823kvar Q2 0 823kvar Q3 0 822kvar Press P go to the next screen 3 screen display system total power reactive power and apparent power As in Fig 3 9 Psum 1 426kW Qsum 2 471kvar Ssum 2 853kVA Press P go to the next screen The 4 screen display power factor of each phase PF1 PF2 PF3 As in Fig 3 10 PF1 0 500 PF2 0 499 PF3 0 500 Press P go to the next screen Fig 3 10 Three phase power factor 5 screen display system average power factor PF and system frequency F As in Fig 3 11 PF 0 500 F 50 01Hz Press P go to the next screen Fig 3 11 Power factor and frequency 6 screen display system power demand Dmd_P and reactive power demand Dmd_Q As in Fig 3 12 Dmd_P 1 425kW Dmd_Q 2 472kvar Press P go back to the 1st screen Fig 3 12 System power demand Note when the voltage wiring of the meter is set to 211 or 3LL there is no phase power phase reactive power and phase power factor screen Only the 3rd 5th and 6th screen displayed 35 Maand 36 Press key display energy and run time The 1 screen display the consumption energy Ep_imp 50 9kwh as in Fig 3 13 Press
21. 8 Appendix B Ordering 1 81 Appendix Revision 1 82 d Congratulations You have gotten an advanced versatile and multifunction power meter You may call it a Remote terminal unit RTU Your power system will benefit a lot from this multifunction power meter Open the package you will find the following items 1 Acuvim L power meter 1 2 Terminal 3 2 for basic model 3 Installation clips 4 4 Installation manual 1 5 maintenance guarantee card 1 Please read the manual carefully before operate and set the Acuvim L power meter You can read part of the manual depends on how you use the Acuvim L power meter Chapter 1 helps you understand the fundamental function specification and application of Acuvim L Chapter 2 describes installation and connection of Acuvim L Chapter 3 tells you the data display and parameter setting method of Acuvim L Chapter 4 gives the address table of Acuvim L Appendix lists the technical data and specifications of Acuvim L and ordering information a eT a Chapter 1 Introduction Characteristics of Acuvim L Application fields Acuvim L Series 1 1 Characteristics of Acuvim L Head Multifunction high accuracy Acuvim L series multifunction power meter is designed using latest microprocessor and digit
22. Acuvim L Series Power Meter User s Manual 0101 1001010101101110100101010101 10110001010101011100101 EE WE EIE 101 101 Acuvim LL Copyright 2007 V1 1 This Manual may not be reproduced in whole or in part by any means without written permission of Accuenergy The information contained in this document is believed to be accurate at the time of publication however Accuenergy assumes no responsibility for any errors which may appear here and reserves the right to make changes without notice Please consult the local represent for latest product specifications before ordering Please read this manual carefully before installation operation maintenance of Acuvim L power meter Following symbols used in this user s manual and on Acuvim L power meter are to alert the danger or to prompt the operating or setting process Dangerous symbol Failure to observe the information may result in 4 injury or death Alert symbol Alert the potential danger D Observe the information after the symbol to avoid possible injury or death 5 LISTED This mark is on product for UL Listed product Installation and maintenance of the Acuvim L power meter should only be performed by qualified competent personnel that have appropriate training and experience with high voltage and current device Chapter 1 1
23. As in Fig 3 58 the DO1 limit is set to 1800 Fig 3 58 DO1 alarm limit 54 Fig 3 59 DO2 alarm output items Fig 3 60 DO2 inequality sign Fig 3 61 DO2 alarm limit 11 screen 002 alarm output items setting The same is as DO1 for setting 12 screen 002 inequality sign setting page 0 lt 1 The 10 screen the setting page of DO2 alarm limit Setting steps refer to content of digital output As in Fig 3 61 the DO2 limit is set to 4500 This is the last screen of DO parameter setting Press V A key for acknowledgement and go to the first screen Press key and key simultaneity to exit the setting mode DO Parameter and enter the setting mode of system parameter Press H key and V A key simultaneity to exit the setting mode of system Parameter and enter the metering data display page 3 6 Introduction of measurement and functions of Acuvim L Almost all the electric parameters in power systems can be measured by Acuvim L Some parameters that the users are not familiar will be introduced in the part Voltage U True RMS value of three phase voltages three line to line voltages are measured and displayed in Acuvim L Current True RMS value of three phase current neutral current are measured and displayed in Acuvim L Power P Three phase power and system total power are measured and displa
24. F V1 and V2 F 1388H 50 00Hz V1 03E7H 99 9V V2 03E9H 100 1 is shown as Table4 9 Addr Fun Byte Data1 Data1 Data 2 Data2 Data3 Data3 CRC16 CRC16 count hi Lo hi lo hi Lo hi lo 11H 03H 06 13H 88H 03H E7H 03H E9H 7FH 04H Table 4 5 Read F V1 and V2 Message of response 2 Preset Reset Multi Register Function Code 16 Query Function 16 allows the user to modify the contents of a Multi Register Any Register that exists within the Acuvim L can have its contents changed by this message The example below is a request to an Acuvim L number 17 to Preset Ep_imp 17807783 3KWH while its Hex Value 0A9D4089H Ep_imp data address is 0156H and 0157H Addr Fun Data start Data start Data reg Data of reg Byte Count reg hi reg lo hi lo 11H 10H 01H 56H 00H 02H 04H Value Hi Value Lo Value Hi Value lo CRC hi CRC Lo OAH 9DH 40H 89H 4DH B9H Table 4 6 Preset KWH Query Message Response The normal response to a preset Multi Register request includes the Acuvim L address function code data start register the number of registers and error checking Data start Data start Data of Data of CRC16 CRC16 Addr Fun g reg hi reg lo reg hi Reg lo hi lo 11H 10H 01H OCH 00H 02H A2H B4H Table 4 7 Preset Multi Registers Message of Response 4
25. IN THE END USE EQUIPMENT OR BUILDING INSTALLATION THE SWITCH SHALL BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND WITHIN EASY REACH OF THE OPERATOR THE SWITCH SHALL BE MARKED AS THE DISCONNECTING DEVICE FOR THE EQUIPMENT This chapter tells you how to install Acuvim L power meter Please read this chapter carefully before your installation 2 1 Appearance and Dimensions of Acuvim L Appearance 980908 OOOOO Figure 2 1 Appearance Acuvim L D Enclosure Made of high strength anti combustion engineering plastic 2 Front casing Revealed out of Panel 8 LCD display Large bright LCD display key Select what to be displayed and set Parameter 5 Voltage input terminals Voltage inputs 6 Current input terminals Current inputs Power input terminals Power supply inputs RS 485 or digital output RS 485 port is used to communication digital output terminals port is used for pulse output or alarm output 9 Installation clips Used to fix the power meter Table 2 1 Parts of Acuvim L Dimensions mm 4 ES E Multifunction Power Meter 96 00 91 00 5 o os
26. U2 and U3 as Fig 3 2 U1 380 2V U2 380 0V U3 379 8V Load nature is inductive and communication is normal Note load nature and communication status is system information they will display in every screen Fig 3 2 Three phase voltage Press V A go to next screen The 2 screen display voltage of line to line as shown in Fig 3 3 U12 658 5V U23 658 0 U31 657 8 Press V A go to the next screen Fig 3 3 Three phase voltage The 314 screen display current of each phase 11 I2 and shown as Fig 3 4 2 501 12 2 500 13 2 499 Press V A go to the next screen Fig 3 4 Three phase current 4 screen display neutral current As in Fig 3 5 In 0 000A Press V A go to the next screen Fig 3 5 Neutral current 5 screen display current demand of each phase As in Fig 3 6 11 2 503 12 2 501 13 2 500A Press V A go back to the 1st screen Fig 3 6 Demand current Note when the voltage wiring of the meter is set to 2LL there is no phase voltage and natural current screen namely no 1st and 4th screen only 2nd 3rd and 5th screen 33 34 Press P key display metering readings related power Fig 3 7 Three phase power Fig 3 8 Three phase reactive Fig 3 9 Power reactive and apparent power The 1 screen display the power of each phase As in Fig 3 7 P1 0 47
27. al signal process technology It can measure voltage current active power reactive power power factor for three phases and also the apparent power harmonic content up to 15 THD real and reactive energy demand current and power max min values for real time readings Expanded digital output and RS 485 communication interface perform the functions of energy pulse output event alarm remote data collection and control etc You can read the measuring data even in dim environment easily with large and high clarity LCD screen Except for strong function Acuvim L can also save you money Small size easy installation The installation dimension is according to IEC DIN 96x96mm square and ANSI 39 1 4 inch round standard the installation thickness is only 51mm Acuvim L power meter can be installed in a small cabin And also with the self fasten design the Acuvim L meter can be easily installed and removed without fasten bolt Easy to use Acuvim L has large screen high clarity LCD and bright backlight so you can read the data very easy even in dim environment All the readings and setting parameters can be accessed by using the panel keys or communication port The setting parameters are stored in EEPROM which can maintain its content even if the power of Acuvim L shut off Flexible wiring connection 2 Whether in high or low voltage system whether in 3 phase 3 wire 3 phases 4 wire or single phase sys
28. current harmonic rate the corresponding current CO Note The setting should be done by the professional personnel who have read the user s manual and understood the application situation Note When we press H and V A keys simultaneously to exit the setting mode the setting of current page will not be stored screen is 17 to 29 3 4 System parameter setting of Acuvim L Under the metering data display mode press the and V A key simultaneously get into system parameter setting mode of the meter All of the settings can be done through the keys on the panel Under the meter parameter setting mode press H key to move cursor Right move one digit each time Press P for increasing and press E for decreasing Press V A for acknowledgment and going to the next setting item page Press H and V A keys simultaneously to exit from any setting item page Access code is needed for going into the system parameter setting mode Only the person who knows the access code can do the parameter setting The access code is 4 digits decimal number It is from 0000 to 9999 The factory 43 2 44 default is 0000 After key in the right access code press V A to go to the first parameter setting page otherwise go back to the metering data display page Fig 3 32 Access code page Fig 3 33 Address setting page
29. e A current demand la_DEMA Float R 0646H 0647H Phase B current demand Ib_DEMA Float R 0648H 0649H Phase C current demand Float R 064AH 064BH Reserved Table 4 10 primary data address of basic measurements Energy measurements Function code 03 read 16 Pre set 0156H High 16 bit 0157H Low 16 bit Import Energy Ep imp 0 99999999 9 DWord R W Men e D Export Energy _ 0 99999999 9 DWord R W a 9 99999999 9 DWord R W em DE Export ga enersY 0 99999999 9 DWord R W Table 4 11 Data address of energy measurements 69 The relationship between numerical value in register of Acuvim L and the real physical value is as following table Rx is numerical value in register of Acuvim L Energy Ep_imp Ep_exp Ep Rx 10 kWh Reactive energy Eq_imp Eq_exp Eq Rx 10 kvarh Table 4 12 Conversion relationship of Energy dada Power quality measurements Function code 03 read Total harmonic distortion of V1 or V12 0400H THD V1 0 10000 word R Total harmonic distortion of V2 or V23 0401H THD V2 0 10000 word R Total harmonic distortion of V3 or V31 0402H THD V3 0 10000 word R 0403H Total harmonic distortion of 11 11 0 10000 word R 0404H Total harmonic distortion of 12 THD 12 0 10000 word R 0405H Total harmonic distortion of 13 THD_ 1
30. ed if the rated current over 5A The wire number of current input could be AWG15 10 or 1 5 2 5mm Note The CT loop should not be open circuit in any circumstance when the power is on There should not be any fuse or switch in the CT loop and one end of the CT loop should be well connected to the ground Vn connection Vn is the reference point of Acuvim L voltage input The lower is the wire resistance the less is the error Three phase wiring diagram Acuvim L can satisfy almost all kinds of three phase wiring diagram Please read this part carefully before you begin to do the wiring so that you may chose a wiring diagram suitable for your power system The voltage and current input wiring mode can be set separately in the meter parameter setting process The voltage wiring mode could be 3 phase 4 line Wye 3LN 3 phase 4 line 2PT Wye mode 2LN 3 phase 3 line open delta 2LL and 3 phase 3 line direct connection mode 3LL The current input wiring mode could be 3CT 2CT and 1CT Any voltage mode could be group with one of the current mode Voltage Input Wiring 3 Phase 4 Line Wye mode The 3 Phase 4 Line Wye mode is popularly used in low voltage electric distribution power system The power line can be connected to the meter voltage input directly as in fig 2 10a In the high voltage input system 3PT Wye mode is often used as in fig 2 10b The voltage input mode of the Acuvim L should be set 3LN for both voltage inp
31. em value 0 Energy select No output Ep_imp Ep_exp Eq_imp Maand 52 Fig 3 54 DO2 output items Fig 3 55 DO delay time of alarm setting Fig 3 56 DO1 alarm output items The 6 screen DO2 output item setting The same as DO1 for setting and they don t effect each other at all Press V A key for acknowledgement and going to next page The 7 screen DO delay time of alarm setting page When the metering data is over pre setting limit how long the alarm output is generated The delay time can be an integer from 0 255 One digit is 300ms The 8 screen 001 alarm output items setting The DO1 alarm output can be one of the following energy items shown in table below 1 0 1 2 3 4 5 6 7 i item Hz V1 v2 v3 v12 V23 V31 1 Var 8 9 10 11 12 13 14 15 item 12 13 In 1 2 Psum 01 16 17 18 19 20 21 22 23 item Q2 Q3 Qsum Ssum PF1 PF2 PF3 PFsum Var 24 25 26 27 28 29 30 item U unbl I unbl P Q 11 12 9 screen 001 inequality sign setting page 45 T As Fig 3 57 the inequality sign is set to 1 that is when the metering data is over the pre setting limit an alarm output is generated Fig 3 57 DO1 inequality sign The 10 screen the setting page of DO1 alarm limit Setting steps refer to content of digital output
32. es or No Yes clear energy No do not clear energy Press V A key go to next page Fig 3 47 Alear running time Fig 3 48 Access code setting 15 screen the setting page of clearing running time The running time of Acuvim L can be cleared via panel and then the new time is registered Press P or E to select yes or No No do not clear running time Yes clear running time Press V A key go to next page The 16 screen access code setting page It is the last screen of system parameter setting page The access code can be changed in the page It s important to remember the new access code As in Fig 3 48 the access code is 0001 Press V A key the access code will be stored in Acuvim L Press H key and V A key to exit the system setting mode when all the setting has been finished 3 5 DO parameter setting of Acuvim L Acuvim BL meter has two digital outputs Each can operate as energy pulse output or alarm output All parameters about DO can be set via panel To distinguish with system parameter setting mode we call the setting mode about DO as DO parameter setting mode 49 50 Press H key and E key simultaneity under the system parameter setting mode will enter the DO parameter setting mode The operation of keys is the same as in pre setting pages You
33. f the voltage fundamental and Un is Rms value of the voltage harmonic with order n Each harmonic rate the percentage of each harmonic divided by fundamental HRU GE x100 HRI 100 1 1 Demand demand of total power and reactive power system demand of three phase current The demand statistics method in Acuvim L is sliding windows The sliding window time can be chose from 1 to 30 minute The window slides one minute each time For example the sliding window time is supposed to be three minutes If average power of the 1 minute is 12 that of the 274 minute is 14 and that of the 3 minute is 10 then the total power demand the last three minute is 12 14 10 3 12 at the end of the 3 minute If another minute passed the average power of the minute is 9 then the total power demand of the last three minute is 14 10 9 3 11 at the end of the 4 minute Unbalance factor Acuvim L can measure the unbalance factor of three phase voltage and current using method of sequence vector Max Min Acuvim L can measure the max value of system total power reactive power and apparent power and the max min of the three phase voltage and current The value of metering data is stored in NV RAM and can be accessed or cleared via control panel or communication Over limit alarming In Acuvim BL when the metering data is over the pre setting limit and over presetting time interval the over limit alarming will be picked up The digital ou
34. g mode LINE A B C TAFUSE EE Ov Acuvim L va E AE vn 2 M LOAD D Fig 2 13 2LL with 2PTs Current Input Wiring 3CT All the current input of three phase system can be looked as 3CT one whether there are 2 CTs or 3 CTs in the input side The current input mode of the Acuvim L should be set 3CT for this current input wiring mode LINE Terminal block 9 fom 9 d r2 OU AeNm L 2 Gat t t 5 132 LOAD 4 Fig 2 14 LINE A BC Terminal block 1 112 DU Acuvim L reum 131 8 132 LOAD E Fig 2 15 3CT b 2CT The difference of the fig 2 16 and the fig 2 15 is that there is no current input the 121 and 122 terminals The 12 value is calculated from formula 11 12 13 0 The current input mode of the Acuvim L should be set 2CT for this current input wiring mode LINE A B C Terminal block 0m FG 12 4 10 Acuvim L 4 181 132 LOAD C D N Fig 2 16 2CT 1CT If it is a three phase balance system 1 CT connection method can be 20 used the other two current are calculated according to the balance supposing LINE Terminal block LOAD 2 112 lt 2 124 00122 131
35. ing output Digital output circuit form is Photo MOS The simplified circuit is as below VCC oDO1 Photo MOS External 4 OUT Power Supply ACDC o DOC Acuvim L Fig 2 27 Digital output circuit The Max output voltage and current are 250Vac 300Vdc and 50mA When the digital output is used as over limit alarm output the up and low limit of the parameter time interval and output port can be set Communication The communication port and protocol of Acuvim L are RS485 and Modbus RTU The terminals of communication are A B and S 14 15 and 16 A is differential signal B is differential signal and S is connected to shield of twisted pair cable Up to 32 devices can be connected on a RS485 bus Use good quality shielded twisted pair cable AWG22 0 5mm or larger The overall length of the RS485 cable connecting all devices can not exceed 1200m 4000ft Acuvim L is used as a slave device of master like PC PLC data collector or RTU If the master does not have RS485 communication port a converter has to be used Normally a RS232 RS485 or USB RS485 is adopted The topology of RS485 net can be line circle and star The recommendations for the high quality communication Good quality shielded twisted pair of cable AWG22 0 6mm or larger is very important The shield of each segment of the RS485 cable must be connected to the ground at one end only
36. lance factor U_unbl 0 1000 word R 0149H Current unbalance factor _unbl 0 1000 word R 014AH Load nature RT L C R 76 67 82 word R 014BH reserved 014 reserved 014DH reserved 014 reserved 014FH reserved 0150 power demand DEMA 32768 32767 Integer R 0151H reactive power demand DEMA 32768 32767 Integer R Phase A current demand 0152H la 0 65535 word R Phase B current demand 0153H Ib DEMA 0 65535 word R Phase C current demand 0154H Ic 0 65535 word R 0155H reserved Table 4 8 data address of basic measurements The relationship between numerical value in register of Acuvim L and the real physical value is as following table Rx is numerical value in register of Acuvim L Voltage V1 V2 V3 V12 V23 V31 U Rx x PT1 PT2 10 Volt V Current 11 12 13 In 1 x CT1 CT2 1000 Amp A Power Pa Pb Pc Psum P Rx PT1 PT2 x CT1 2 Watt W Reactive power Qa Qc Qsum Q Rx x PT1 PT2 x CT1 CT2 Var Apparent power Ssum S Rx x PT1 PT2 x CT1 CT2 VA Power factor PFa PFc 1000 NA Frequency F Rx 100 Hz Load nature R L C 76 67 82 NA S Unbl Rx 1000 x100 NA Table 4 9 Conversion relationship of basic measurements
37. meter is fixed on the panel Fig 2 5 Use clips to fix the meter 2 2 3 Wiring connection of Acuvim L There are four or three terminal strips on the back of Acuvim L according to different model They are voltage input terminal strips current input terminal strips DO output terminal strips or communication terminal strips and power supply terminal strips The 1 2 and 3 are used to represent each phase of three phase system They have the same meaning as A and C or T S and in three phase system Current input terminal strips 111 12 121 122 1 132 oo Voltage input terminal strips 2020202 8 9 10 V4 V2 V3 VN Power supply terminal strips 20202 OA TIEPE e Power Supply Communication terminal strips JIL O Er 14 15 16 Digital output terminal strips JIL O r3 r3 Digital Output 001 DO2 DOC 14 15 16 Fig 2 6 Terminal diagram of Acuvim L Note Model Acuvim AL has no digital output and communication terminal strips Model Acuvim BL has digital output terminal strips only and Acuvim CL has communication terminal strips only Danger Only the qualified personnel could do the wi
38. n display THD of phase current 11 THD 12 13 As fig 3 20 THD of three phase current THD_I1 1 89 _12 1 83 _13 1 85 Press key go back to the 1st screen Press the E and H Keys simultaneously the Max and Min value of metering data three phase voltage and current unbalance factor and harmonic rate will display on the screen Press the E and H Keys simultaneously go to the statistics screen 3 3 1 Display Max and Min of the voltage and current and peak value of current demand The 1 screen Display the Max value of voltage The Max label display on the top of screen As in Fig 3 21 01 380 3 U2_max 380 2V U3_max 380 5V Fig 3 21 Max value of phase voltage Press V A key under the statistics display mode to display the Min and Max value of voltage current and current demand The 274 screen display the Min value of voltage The Min label display on the top of screen As in Fig 3 22 U1_Min 379 6V U2_Min 379 8V U3_Min 379 7V Press V A go to the next screen Fig 3 22 Min value of phase voltage 3 screen display the Max value of line to line voltage As in fig 3 23 U12_Max 658 6V 023 658 3 031 Max 658 3V Press V A go to the next screen Fig 3 23 Max value of line to line voltage 40 Fig 3 24 Min value of line to line
39. oltage unbalance factor U unbl e 4 unbalance factor Voltage THD T THD_V2 e e Power Quality Current THD 11 THD_I2 THD 13 Voltage 2nd to 15st 5 Current 2nd to 15st 5 Peak power 11 max Dmd 12 4 demand max 22 Peak current Dmd_Psum_max e Statistics demand Dmd_Qsum_max Max Min voltage Uo Pulse output Alarm output RS 485 MODBUS Protocol Note e Possessed functions Chapter 2 Installation Appearance Dimesions Installation method Wiring of Acuvim L Head Considerations When Installing Meters O Installation of the Meter must be performed by only qualified personnel who follow standard safety precautions during all procedures Those personnel should have appropriate training and experience with high voltage devices Appropriate safety gloves safety glasses and protective clothing are recommended O During normal operation of the Meter dangerous voltages flow through many parts of the meter including Terminals and any connected CTs Current Transformers and PTs Potential Transformers all 1 0 Modules Inputs and Outputs and their circuits All Primary and Secondary circuits can at times produce lethal voltages and cur
40. om 0 to 4 corresponding to none Ep_imp Ep_exp Eq_imp Eq_exp Pulse constant ranges from 1 to 6000 integer with a unit of 0 1kWh kvarh apparently that is the resolving power of energy output Pulse width ranges from 1 to 50 integer with a unit of 20ms The narrowest interval between two pulses is 20ms In practice the pulse width and the pulse ratio are selected according to system power The relation of the two parameters should satisfied following expression pulse ratio gt pulse width 1 xPmax 18000 In the expression the Pmax is the maximum power or reactive power The unit is kW or kvar Recommend pulse ratio is 3 to 5 times the right side value of the above expression Chapter 4 Communication j Introducing Modbus Protocol Format of Communication Data Address Table 59 This chapter will mainly discuss how to operate the meter via communication port using software To master this chapter you should be familiar with Modbus and read other chapters of this manual to make sure that you have generously mastered the function and application of this product This chapter includes Modbus protocol format of communication and data address table and Acuvim L application details 2 4 1 Introducing Modbus protocol The Modbus RTU protocol is used for communication in Acuvim L The data format and error check methods are defined in Modbus protocol The half duplex query and respond mode is ado
41. pted in Modbus protocol There is only one master device in the communication net The others are slave devices waiting for the query of the master Transmission mode The mode of transmission defines the data structure within a frame and the rules used to transmit data The mode is defined in the following which is compatible with Modbus RTU Mode Modbus is trademark of Modicon Inc Coding system 8 bit binary Start bit 1 Data bits 8 Parity No parity Stop bit 1 Error checking CRC check 4 2 Modbus Protocol Maand Framing 8 bit 8 bit Nx8 bit 16 bit Table 4 1 data frame format Address field The address field of a message frame contains eight bits Valid slave device addresses are in the range of 0 247 decimal A master addresses a slave by placing the slave address in the address field of the message When the slave sends its response it places its own address in this address field of the response to let the master know which slave is responding Function field The function code field of a message frame contains eight bits Valid codes are in the range of 1 255 decimal When a message is sent from a master to a slave device the function code field tells the slave what kind of action to perform 03 Read data Obtain current binary value in one or more registers 16 Preset multiple registers Place specific value of consecutive multiple registers
42. r The energy register can be cleared or preset via communication The register of run time can be cleared and can not be preset Appendix Technical data and specifications Appendix B Ordering Information Appendix C Revision History Til 1 Appendix A Technical data and Specification Input ratings Voltage rating 400 LN 690 LL Vac RMS 3 phase 400 LN Vac RMS single phase With 20 overage 3LN or 2LN wiring Installation Category Pollution Degree 2 Frequency range 45 65 2 overload 2 times continuously 2500Vac per second no recurrence Voltage range through PT 1000KV highest at primary side PT burden lt 0 2VA Measuring True Rms Current rating 5Amp AC 1Amp AC Optional Current range 50000A highest at primary side Overload 10A continuously 100A per sec no recurrence CT burden lt 0 5VA Measuring True Rms Voltage 0 5 Current 0 5 Current demand 0 5 Power 1 0 Reactive power 1 0 Apparent power 1 0 Power demand 1 0 Reactive power demand 1 0 Power factor 1 0 Frequency 0 5 Energy 1 0 Reactive energy 1 0 Unbalance factor 1 0 Harmonic 2 0 Drift with temperature lt 100 Stability 0 1 year measuring IEC 61036 Class1 ANSI C12 16 Class10 Environmental IEC60068
43. re connection work Make sure that the power supply is cut off and all the wires are powerless Failure to observe it may result in severe injury or death Safety Earth Connection Before doing the meter wiring connection please make sure that the switch gear has a safety Earth system Connect the meter safety earth terminal to the switch gear safety earth system The following safety earth symbol is used in this user s manual Fig 2 7 Earth ground symbol Note Make sure the voltage of power supply is the same as what the meter needed for its auxiliary power Auxiliary power The auxiliary power supply of the Acuvim L is 100 415Vac 50 60Hz or 100V 300Vdc Typical power consumption of the meter is less than 2W A regulator or a UPS should be used when the power supply undulates too much The terminals for the auxiliary power supply 11 12 13 L 1 The typical wiring connection is shown as Fig 2 8 1AFUSE eL Power Supply Ground HON Acuvim L Fig 2 8 wiring connection of power supply The wire of power su typical 1A 250Vac shoul pply could be AWG22 16 or 0 6 1 3mm A fuse d be used in auxiliary power supply loop No 13 terminal must be connected to the safety earth system of switchgear An isolated transformer or EMC filter should be used in the auxiliary power supply loop if there i
44. rents Avoid contact with any current carrying surfaces O Do not use the meter or any I O Output Device for primary protection or in an energy limiting capacity The meter can only be used as secondary protection Do not use the meter for applications where failure of the meter may cause harm or death Do not use the meter for any application where there may be a risk of fire 1 All meter terminals should be inaccessible after installation O Do not apply more than the maximum voltage the meter or any attached device can withstand Refer to meter and or device labels and to the Specifications for all devices before applying voltages Do not HIPOT Dielectric test any Outputs Inputs or Communications terminals ACCUENERGY recommends the use Shorting Blocks and Fuses for voltage leads and power supply to prevent hazardous voltage conditions or damage to if the meter needs to be removed from service CT grounding is optional O ACCUENERGY recommends use dry cloth to wipe the meter NOTE IF THE EQUIPMENT IS USED MANNER SPECIFIED BY THE MANUFACTURER THE PROTECTION Q PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED NOTE THERE IS NO REQUIRED PREVENTIVE MAINTENANCE OR INSPECTION NECESSARY FOR SAFETY HOWEVER ANY REPAIR OR MAINTENANCE SHOULD BE PERFORMED BY THE FACTORY DISCONNECT DEVICE The following part is considered the equipment disconnect device A SWITCH OR CIRCUIT BREAKER SHALL BE INCLUDED
45. s power quality problem in the power supply 1AFUSE L OL Power Siy NO Acuvim L Ground e NM Fig 2 9 wiring connection of auxiliary power supply w ith EMC filters Voltage input Input Voltage of Acuvim L should be 40 400Vac L N 70 690Vac L L The meter is suitable for low voltage or high or medium voltage system three phase system which voltage or secondary of PT lower than this range 5 Note The secondary of PT can not be shorted otherwise it may cause the severe damage of the instrument A fuse typical 1A should be used in voltage input loop PT should be used to transform the high voltage into measurement range of Acuvim L if it is used in high voltage system The wire number of voltage input could be AWG16 12 or 1 3 2 0mm Note In no circumstance could the secondary of PT be shorted The secondary of PT should be well grounded at one end Head Current input In a practical engineering application CTs should be installed in the loop of measuring Normally the secondary of CT is 5A 1A is possible in the ordering option A of accuracy over 0 5 rating over 3VA is recommended and it will influence the measuring accuracy The wire between CT and Acuvim L should be as shorter as possible The length of the wire may increase the error of the measurement CTs must be requir
46. se voltage unbalance factor and three phase Fig 3 29 Unbalance factor of current unbalance factor voltage and current 41 Maand 42 As in fig 3 29 voltage unbalance factor 0 3 current unbalance factor 0 5 Press H key go to the next screen Press H key to display harmonic rate of voltage and current The screen will roll from 274 harmonic rate of voltage to 15 harmonic rate of current as you press each time The HARMO label displays on the top of screen The following screens show the 2 and 16 screen as example Fig 3 30 2nd harmonic rate of phase voltage Fig 3 31 2nd harmonic rate of line to line voltage The 2 display 2 harmonic rate of voltage As fig 3 30 U1_Hr2 0 12 U2 Hr2 0 12 U3_Hr2 0 12 Note when the wiring of voltage input is set to 2LL or 3LL there is no harmonic rate of phase voltage the harmonic rate of line to line voltage will be shown as in Fig 3 30 274 screen display 274 harmonic rate of line to line voltage As in Fig 3 31 U12_Hr2 0 12 U23 Hr2 0 14 U31_Hr2 0 12 Press key in turn display 3 to 15 voltage harmonic rate the corresponding screen is 3 to 15 16 screen display 2nd harmonic rate of current As in Fig 3 32 11_ 2 3 08 12_ 2 3 05 2 3 01 Press key in turn display 3 to 15 Fig 3 32 2nd harmonic rate of
47. sion relationship of run time 064CH 064DH of V1 V1_max Float R 064 064 of V2 V2 max Float R 0650H 0651H Max of V3 V3_max Float 0652H 0653H of V12 V12 max Float R 0654H 0655H of V23 V23 max Float R 0656 0657 Max of V31 V31 max Float R 0658H 0659H of 11 11 max Float R 065AH 065BH Max of 12 2 max Float R 065CH 065DH of max Float R 065EH 065FH Max of power demand PDmd max Float R 0660H 0661H Max of reactive power demand Float R QDmd max 0662H 0663H of current demand la Float R laDEMA max 0664H 0665H Max of current demand Ib Float R max 0366H 0667H of current demand Ic Float R max 0368H 0669H Reserved 036AH 066BH Reserved 066CH 066DH Min of V1 V1 min Float R 066EH 066FH Min of V2 V2 min Float R 0670H 0671H Min of V3 V3 min Float R 0672H 0673H Min of V12 V12 min Float R 0674H 0675H Min of V23 V23 min Float R 0676H 0677H Min of V31 V31 min Float R 0678H 0679H Min of I1 min Float R 067 067 Min of I2 12 min Float R 067CH 067DH Min of min Float R 067EH 067FH Reserved 73 Maand 0680 0681 Reserved 0682 0683 Reserved Table 4 17 primary data address of Statistics measurements Parameter setting Function code 03 read 16 preset
48. tails The 109 screen back light on time setting page The on time can be set from 0 to 120 Minute The back light will always be on if the setting value is 0 If it is other value it means after the setting time it will goes off if no key has been pressed It will be on whenever you press any key if it is off As in Fig 3 42 the setting time of back light is 2 minute namely the back light will go off automatically if there is no touch on the keys 11 screen sliding windows time of demand setting page Sliding windows time of demand is from 1 30 minute The window slides once per minute As in Fig 3 43 the sliding windows time is 8 minute Maand 48 Fig 3 44 Clear Max and Min page Fig 3 45 Clear energy enable Fig 3 46 Acknowledgement to clear energy 12 screen the setting page of clearing Max and Min The Max and Min value of Acuvim L can be cleared via panel and then the new data is registered Press P or E to select yes or No No do not clear Max and Min Yes clear Max and Min Press V A key go to next page The 13 screen clear energy enable setting page The energy of Acuvim L can be cleared via panel and then the new data is registered 1 enable 0 disable 14 screen the setting page of acknowledgement to clear energy Press or to select y
49. tem Acuvim L is easily to use 1 2 Application fields Acuvim L series can work as Remote Terminal Unit RTU for collecting remote data and controlling in SCADA system and also can work as multifunction power meter for monitoring and measuring in power distribution automation system Acuvim L adopts real RMS measure method and digital signal process technology so that it s especially fit for serious environment with nonlinear load The main application fields are Power Distribution Automation Intelligent Electric Switch Gear Industry Automaton Building Automation Energy Manage System Large UPS system 1 3 Acuvim L series The Acuvim L series have three kinds of products They are Acuvim AL basic model Acuvim BL basic model 2do and Acuvim CL basic model RS485 All functions shows in table 1 1 Table 1 1 Functions of Acuvim L series Phase voltage U1 U2 U3 Real time Line voltage U12 U23 U31 Measuring Current 12 13 In Power P1 P2 P3 Psum aand Reactive Power Q1 02 03 Qsum e e Real time Apparent Power Ssum e e Measuring Power Factor PF1 PF2 PF3 PF Load Character L C R Real Energy Ep_imp Ep_exp Energy Reactive Ener Eq_imp Eq_e amp demand Iv gy Eq Imp Eq exp Current Demand 11 Dmd 12 Power Demand Dmd_Psum Dmd_Qsum e e V
50. tput DO can be used as trigger to light or sound alarming An example is given following to describes how the over limit alarming work For example When current Ib goes over 180A and duration is over 15 seconds an over limit alarming will be generated Suppose that the Ct ratio is 200 and output via DO1 the setting steps is as following 1 firstly set the mode of DO1 as alarming output namely the value of DO1 mode is set to 1 2 secondly delay time is 15 seconds for the basic unit of delay time is 300ms the setting value of delay time is 15 0 3 50 3 Thirdly alarm parameter is Ib the value of alarm parameter is set to 8 2 2 4 Ib is greater than 180A so the alarm inequality sign is set to 1 5 The setting value of alarm limit is calculated as the following equation Real value setting valuexCt1 Ct2 1000 So the setting value of alarm limit is 4500 Then we have completed the setting of over limit alarming Energy pulse output The two digital outputs of Acuvim BL can be used as energy pulse output The output energy can be selected among all kinds of energy and reactive energy Pulse constant and pulse width can be set to meet your requirements Pulse constant is the kWh a pulse stands for pulse width is the time that a pulse lasts When the accumulated energy reaches the pulse constant there will be a pulse on DO Related parameters pulse energy output ranges fr
51. ty check method used for the individual characters of the message The CRC field is two bytes containing a 16 bit binary value The CRC value is calculated by the transmitting device which appends the CRC to the message The receiving device recalculates a CRC during receipt of the message and compares the calculated value to the actual value it received in the CRC field An error results if the two values are not equal The CRC is started by first preloading a 16 bit register to all 1 s Then a process begins of applying successive 8 bit bytes of the message to the current contents of the register Only the eight bits of data in each character are used for generating the CRC Start and stop bits and the parity bit do not apply to the CRC During generation of the CRC each 8 bit character is exclusive ORed with the register contents Then the result is shifted in the direction of the least significant bit LSB with a zero filled into the most significant bit MSB position The LSB is extracted and examined If the LSB was a1 the register is then exclusive ORed with a preset fixed value If the LSB was a 0 no exclusive OR takes place This process is repeated until eight shifts have been performed After the last eighth shift the next 8 bit byte is exclusive ORed with the register current value and the process repeats for eight more shifts as described above The final contents of the register after all the bytes of the message ha
52. ut wiring mode LINE A B N 1AFUSE Qvi V2 Acuvim L St LOAD Fig 2 10a 3Ln direct connection LINE A B N TAFUSE FR gt 7 Acuvim L i Sle e Ov LOAD Fig 2 10b connection with 3PTs 3 Phase 4 Line 2PT mode 21 In some 3 Phase 4 Line Wye system 2PT Wye mode is often used as in Fig 2 11 balanceable The voltage of V2 is It is supposed that the 3 phases of power system are calculated according to the V1 and V3 The voltage input mode of the Acuvim L should be set 2LN for 2PT voltage input wiring mode LINE N TAFUSE 3 LOAD NE N LJ Fig 2 11 2Ln connection with 2PTs 3 Phase 3 Line direct connection mode 3LL In a 3 Phase 3 Line system power line A B and C are connected to V1 V2 and V3 directly Vn is floated The voltage input mode of the Acuvim L should be set 3LL LINE 1AFUSE 7 v1 LOAD V2 Acuvim L 4 E 3 8 Fig 2 12 3LL 3 phase 3 line direct connection 3 Phase 3 Line open Delta Mode 211 Open delta wiring mode is often used in high voltage system V2 and Vn connected together in this mode The voltage input mode of the Acuvim L should be set 2LL for voltage input wirin
53. ve been applied is the CRC value When the CRC is appended to the message the low order byte is appended first followed by the high order byte 4 3 Format of communication Explanation of frame Addr Fun Data start Data start Data Data of CRC16 CRC16 reg hi reg lo regs hi regs lo Hi Lo 06H 03H 00H 00H 00H 21H 84H 65H Table 4 3 Explanation of a frame As shown in table 4 3 the meaning of each abbreviated word is Addr address of slave device Acuvim L2 Fun function code Data start reg hi start register address high byte Data start reg lo start register address low byte Data of reg hi number of register high byte Data of reg lo number of register low byte CRC16 Hi CRC high byte CRC16 Lo CRC low byte 1 Read Data Function Code 03 Query This function allows the master to obtain the measurement results of Acuvim L Table 4 4 is an example to read the 3 measured data F V1 and V2 from slave device number 17 the data address of F is 0130H V1 is 0131H and V2 is 0132H Data start Datastart Data of Data of gadi addr hi Addr Lo Regs hi Regs lo CRC16l0 11H 03H 01H 30H 00H 03H 06H A8H Table 4 4 Read F V1 and V2 Query Message Response The Acuvim L response includes the address code function code quantity of data byte data and error checking An example response to read
54. yed in Acuvim L Reactive power Q Acuvim L adopts two definitions of reactive power 1 Sinusoidal reactive power The formula is as following D S P 2 Nonsinusoidal reactive power The formula is as following 40 D Where Budeanu s distortion power Q Budeanu s reactive power Apparent power S System total apparent power is measured and displayed in Acuvim L Power factor PF Three phase power factor and system total power factor are measured and displayed in Acuvim L 55 Head Frequency F The frequency of V1 phase voltage input is measured as system frequency Energy kWh Energy is time integral of power The unit is kWh As power has direction positive means consumption and negative means generating So the energy also has the nature of consumption or generating Import energy imp consumption energy Export energy exp generating energy Reactive energy kVarh reactive energy is time integral of reactive power The unit is kVarh As reactive power has direction positive means inductive and negative means capacitive So the energy also has the nature of inductive or capacitive Import energy imp inductive energy Export energy exp capacitive energy Harmonic parameter Total harmonic distortion this factor is often used to express the power quality of the power system The formula is as following U 2 THD 2 100 h 2 1 In the formula Ui is Rms value o

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