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I4MC & i4MV 

iSTAT Single-Phase Transducers 

 

 

Manual 

i4MC & i4MV 

iSTAT Single-Phase Transducers 

Publication Reference:  

i4MC&V/EN/M/C 

 

 

 

i4MC&V/EN/M/C © 2014. ALSTOM, the ALSTOM logo and any alternative version thereof are trademarks and service marks of ALSTOM. The other names 
mentioned, registered or not, are the property of their respective companies. The technical and other data contained in this document is provided for information only. 
Neither ALSTOM, its officers or employees accept responsibility for, or should be taken as making any representation or warranty (whether express or implied), as to 
the accuracy or completeness of such data or the achievement of any projected performance criteria where these are indicated. ALSTOM reserves the right to revise or 
change this data at any time without further notice. 

GRID 

 

 

Summary of Contents for i4MC

Page 1: ...rty of their respective companies The technical and other data contained in this document is provided for information only Neither ALSTOM its officers or employees accept responsibility for or should...

Page 2: ......

Page 3: ...pment will be familiar with the contents of the Safety Section 1 2 Explanation of symbols and labels The meaning of symbols and labels may be used on the equipment or in the product documentation is g...

Page 4: ...terminated the correct crimp terminal and tool for the wire size should be used Before energising the equipment it must be earthed using the protective earth terminal or the appropriate termination o...

Page 5: ...are disconnected 3 3 Opening Enclosure There are no customer replaceable PCB cards or components within the enclosure so the enclosure should not be opened 4 DECOMMISSIONING AND DISPOSAL Decommission...

Page 6: ...ver voltage IEC 61010 1 2001 Category III EN 61010 1 2001 Category III Distribution level fixed installation Equipment in this category is qualification tested at 5kV peak 1 2 50 s 500 0 5J between al...

Page 7: ...tective fuse rating 1 9 INTRODUCTION 1 1 9 General 1 2 9 KEY MESSAGES 1 3 9 ISTAT i4Mx Family 1 3 1 9 i4MV class 0 5 Voltage Transducer 1 3 2 9 i4MC class 0 5 Current transducer 1 3 3 10 Software 1 4...

Page 8: ...Communication 3 6 1 17 Serial Communication parameters COM1 3 6 2 17 Modbus Table of Addresses 3 6 3 17 USB Communications 3 7 17 Security 3 7 1 17 Password setting 3 7 2 17 Password modification 3 8...

Page 9: ...ual iSTAT i4MC V Page 7 6 24 TECHNICAL DATA 7 28 WIRING DIAGRAMS 8 29 RELATED DOCUMENTS 9 30 APPENDIX A MODBUS COMMUNICATION PROTOCOL 10 33 APPENDIX B CALCULATIONS EQUATIONS 10 1 33 Definitions of sym...

Page 10: ...User Manual i4MC V EN M C iSTAT i4MC V Page 8 BLANK PAGE...

Page 11: ...se and single phase transducers all of which are 0 5 multifunction instruments This manual details the single phase transducer models i4MC and i4MV 1 3 1 i4MV class 0 5 Voltage Transducer i4MV is inte...

Page 12: ...need to specify this information at the order stage 1 6 Communications i4MC V can be supplied with either RS232 or RS485 communications via screw terminals which has to be defined at the time of orde...

Page 13: ...voltages and phase rotation supply voltage and nominal frequency Check protective fuse rating the recommended maximum rating of the external protective fuse for this equipment is 6A Red Spot type or...

Page 14: ...he RS485 network Connection Label TABLE 2 1 RS232 AND RS485 CONNECTIONS 2 4 2 USB communications The i4MC V transducer is always supplied with a USB port on the underside under a removable plastic cov...

Page 15: ...ersal AC DC auxiliary power supply Connection details and ratings are shown on a label as detailed in TABLE 2 4 Connection of universal power supply to terminals 13 and 14 TABLE 2 4 AUXILAIRY SUPPLY N...

Page 16: ...rs which scan the communications networks attached to the PC and identify all of the devices connected with their addresses and communications parameters This can be done on RS232 RS485 or USB program...

Page 17: ...hical tree structure of settings the right hand part displays parameter values of the chosen setting group see Figure 3 1 FIGURE 3 1 QDSP INTERFACE 3 4 General Settings General Settings are essential...

Page 18: ...nected with the setting of the analogue output Using a value that matches the expected measurement range with overload will achieve the highest quality of measurements If the Used ranges are changed a...

Page 19: ...if not the Warranty on the product will be void 3 7 Security Parameter settings are divided into 2 groups regarding security level 1 If the passwords are set to AAAA default there is no restriction to...

Page 20: ...t Signal Defines the actual range and output curve shape of the required analogue signal Up to 5 break points can be programmed to achieve the required curve FIGURE 3 7 ANALOGUE OUTPUT SETTINGS If the...

Page 21: ...i4MC V EN M C User Manual iSTAT i4MC V Page 19 3 9 Reset Operations 3 9 1 Reset MD values on i4MC Current and stored MD s are reset 3 9 2 Reset the last MD period on i4MC Current MD value is reset...

Page 22: ...sampled values At higher signal frequencies the number of samples reduces and the number of harmonics included in the calculations is also reduced 4 2 Glossary The following terms are used TABLE 4 1 G...

Page 23: ...r of the fundamental frequency This sum of the powers is a geometric total formed by taking the square root of the sum of the squares of the amplitude of each of the harmonics The i4MC provides THD va...

Page 24: ...User Manual i4MC V EN M C iSTAT i4MC V Page 22 Thermal function 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time min Measured value Present MD MD peak Input...

Page 25: ...ommunication parameters of the i4MC V can be obtained by using the Scan the network feature in the QDSP setting software 5 2 QDSP Setting and Monitoring Software See the separate QDSP Manual for detai...

Page 26: ...oidal Maximum range 12 5A sinusoidal Burden 0 3 VA Frequency Nominal Frequency Fn 50 60Hz 400Hz Measuring range 16 to 400Hz Power Supply Universal AC voltage range 40 to 276Vac Frequency range 45 to 6...

Page 27: ...nt except when it is stated as an absolute value accuracy on communication ANALOGUE OUTPUT General Linearization Linear Quadratic No of break points 5 Output value limits 120 of nominal output Respons...

Page 28: ...me Input to communications Calculated during averaging interval setting 8 to 256 periods resetting 64 periods typically 1 28 seconds at 50Hz Status LED PWR Red Instrument power ON SAFETY FEATURES Prot...

Page 29: ...on condensing Altitude 2000m MECHANICAL Dimensions W45 H75 D105 mm Max conductor cross section for terminals 2 5 mm2 with pin terminal 4 mm2 solid wire Vibration withstand 7g 3 100 Hz 1 oct min 10 cyc...

Page 30: ...User Manual i4MC V EN M C iSTAT i4MC V Page 28 7 WIRING DIAGRAMS FIGURE 10 1 EXTERNAL WIRING DIAGRAM I4MV FIGURE 10 2 EXTERNAL WIRING DIAGRAM I4MC FIGURE 10 4 ENCLOSURE DIMENSIONS...

Page 31: ...i4MC V EN M C User Manual iSTAT i4MC V Page 29 8 RELATED DOCUMENTS Ref Document 1 i4MT Multifunction Transducer Manual 2 QDSP Technical Manual...

Page 32: ...nication via RS232 communication and multi drop communication via RS485 communication Modbus protocol is a widely supported open interconnect originally designed by Modicon The memory reference for in...

Page 33: ...e FREQUENCY 30049 30050 T5 U1 30057 30058 T5 U1 THD 30639 T16 Internal Temperature 30126 T17 Register table for the actual measurements for i4MC MODBUS Register Parameter Start End Type Frequency 3004...

Page 34: ...Signed Measurement 32 bit Decade Exponent Signed 8 bit Binary Signed value 24 bit Example 123456 10 3 FDFE 1DC0 16 T7 bits 31 24 bits 23 16 bits 15 00 Power Factor 32 bit Sign Import Export 00 FF Sig...

Page 35: ...riod 6 n Sample number 0 n N 7 x y Phase number 1 2 or 3 8 in Current sample n 9 ufn Phase voltage sample n 10 ufFn Phase to phase voltage sample n 11 f Power angle between current and phase voltage f...

Page 36: ...l i4MC V EN M C iSTAT i4MC V Page 34 THD 100 1 2 2 I In THD I N n Current THD I1 value of first harmonic n number of harmonic 100 1 2 2 U Un THD U N n Voltage THD U1 value of first harmonic n number o...

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Page 38: ...for information only Neither ALSTOM its officers or employees accept responsibility for or should be taken as making any representation or warranty whether express or implied as to the accuracy or com...

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