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ETI 3MEM80-BEVRSPO Manual

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Type
Description
3MEM80-BEVRSPO
3phase, 80A, IR, S0, RS485, EVSE, bidirectional
COMPACT THREE-PHASE DIRECT CONNECTED DIN-RAIL MOUNTING METER.
•
CLASS B FOR ACTIVE ENERGY AND CLASS 2 FOR REACTIVE ENERGY, MID APPROVED.
•
MAXIMUM CURRENT 80 A (I
•
Communication: S0 & RS485 (Modbus)
•
TARIFF INPUT.
•
SIDE IR COMMUNICATION FOR ADDONS.
•
NFC FOR EASY SETTING AND READING.
•
70°C AMBIENT OPERATIONAL TEMPERATURE.
•
max
).
Code
Weight [kg]
004657206 0,248
Packaging [pcs]
1/96

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  • Page 1 Type Description Code Weight [kg] Packaging [pcs] 3MEM80-BEVRSPO 3phase, 80A, IR, S0, RS485, EVSE, bidirectional 004657206 0,248 1/96 COMPACT THREE-PHASE DIRECT CONNECTED DIN-RAIL MOUNTING METER. • CLASS B FOR ACTIVE ENERGY AND CLASS 2 FOR REACTIVE ENERGY, MID APPROVED. •...
  • Page 2 FEATURES Connecting terminals can be sealed up against non- authorised access with protection covers. Three phase direct connected DIN-rail mounting Communication: meter. Class 1 for active energy according to EN 62053- RS485 serial communication with the • MODBUS protocol ― data is available in 21 and class B according to EN 50470-3.
  • Page 3 Alarms are useful tool for fast detection of exceeded parameters, monitoring proper magnitude level and notification in combination with alarm outputs. INSTALLATION WARNING: Installation must be carried out and inspected by a specialist or under his supervision. When working on the meter, switch off the mains voltage! It is recommended to use 3x80 A fuse for the line protection.
  • Page 4 Figure 5: Connection diagram of S0 output, impulse counter, RS485 - Modbus and tariff clock DIMENSIONAL DRAWINGS Figure 6: Dimensional drawing...
  • Page 5 TECHNICAL DATA Accuracy: Active energy: class 1 EN 62053-21 • ±1.5 % from I to I Rail mounting according DIN EN60715. class B EN 50470-3 • ±1 % from I to I Mechanical characteristics of input: • • Main inputs Reactive, Apparent energy: ±2.5 % from I to I...

  • Page 6: Modbus Rtu

    Pulse output S0 NFC: Pulse rate: 500 imp/kWh Protocol: ISO/IEC 14443 Part 2 and 3 compliant Pulse duration: 32 ms ± 2 ms Frequency range: 13.56 Mhz Rated voltage DC (max): 27 V Baudrate: 106 kbps Switched current (max): 27 mA Operating distance: up to 15 mm from LCD Standard:...
  • Page 7 EU DIRECTIVES CONFORMITY EU Directive on Measuring Instruments 2014/32/EU. EU Directive on EMC 2014/30/EU. EU Directive on Low Voltage 2014/35/EU. EC Directive WEEE 2002/96/EC. DISPOSAL It is forbidden to deposit electrical and electronic equipment as municipal waste. The manufacturer or provider shall take waste equipment free of charge.
  • Page 9 December 2024 • Version 1.06 Three-phase electrical energy meter 3MEM65 User and Installation manual 3MEM65-BPO 3MEM65-BMB 3MEM65-BRS 3MEM65-BT General hardware features MID approval Pulse output ● Tariff input ● MODBUS comm. Protocol × × ● RS485 M-bus serial comm. × ●...
  • Page 10 ASIC DESCRIPTION AND OPERATION 3MEM65-BPO-MID 3MEM65-BMB-MID 3MEM65-BRS-MID 3MEM65-BT-MID General hardware features MID approval ● ● ● ● Pulse output ● Tariff input ● MODBUS comm. Protocol × × ● RS485 M-bus serial comm. × ● × User’s Manual...
  • Page 11 Installation and use of a device also includes handling with dangerous currents and voltages therefore should be installed, operated, serviced and maintained by qualified personnel only. ETI Company assumes no responsibility in connection with installation and use of the product. If there is any doubt regarding installation and use of the system in which the device is used for measuring or supervision, please contact a person who is responsible for installation of such system.
  • Page 12 Used symbols on devices’ housing and labels SYMBOL EXPLANATION DANGER Indicates proximity of hazardous high voltage, which might result in serious injury or death if not handled with care. WARNING Indicates situations where careful reading of this manual is required and following requested steps to avoid potential injury is advised.
  • Page 13 Table of contents BASIC DESCRIPTION AND OPERATION ESCRIPTION OF THE DEVICE HREE PHASE ENERGY METERS APPLICATION AIN FEATURES CONNECTION OUNTING LECTRICAL CONNECTION FIRST STEPS ISPLAY OF DEVICE INFO LCD U NTERFACE IMITS REEZE COUNTERS MEASUREMENTS ELECTION OF AVAILABLE QUANTITIES ALCULATION AND DISPLAY OF MEASUREMENTS TECHNICAL DATA CCURACY ECHANICAL CHARACTERISTICS OF INPUT...

  • Page 15: Basic Description And Operation

    1 BASIC DESCRIPTION AND OPERATION The following chapter presents basic information about a three-phase energy meter 3MEM65 required to understand its purpose, applicability and basic features connected to its operation. In this chapter you will find: ESCRIPTION OF THE DEVICE HREE PHASE ENERGY METERS APPLICATION AIN FEATURES...

  • Page 16: Description Of The Device

    1.1 Description of the device The three-phase energy meters 3MEM65, 3MEM65 (MID certified) are intended for energy measurements in three-phase electrical power network and can be used in residential, industrial and utility applications. Meters measure energy directly in 4-wire networks according to the principle of fast sampling of voltage and current signals.

  • Page 17: Main Features

    1.2 Three-phase energy meters application Optional the meter can be equipped with the following communications: RS485 serial communication with the MODBUS protocol,  M-BUS serial communication,  Communication modules enables data transmission and thus connection of the measuring places into the network for the control and management with energy.
  • Page 18 Connection shall therefore be performed ONLY by a qualified person using an appropriate equipment. ETI, d.o.o. does not take any responsibility regarding the use and connection. If any doubt occurs regarding connection and use in the system which device is intended for, please contact a person who is responsible for such installations.
  • Page 19 2.1 Mounting Threee-phase electrical energy meter 3MEM65 is intended for DIN-rail mounting. In case of using the stranded wire, the ferrule must be attached before the mounting. Figure 2: Dimensional drawing and rear connection terminals position User’s Manual...

  • Page 20: Electrical Connection

    2.2 Electrical connection WARNING Wrong or incomplete connection of voltage or other terminals can cause non-operation or damage to the device. Meter is used for direct connection into the four-wire networks. Recommended installation: Mounting to DIN rail according to DIN EN60715 Power contacts: Power contacts capacity 2.5 mm –...
  • Page 21 Figure 4: Connection diagram for M-BUS option Figure 5: Connection diagram for pulse output option Figure 6: Connection diagram for tariff input option User’s Manual...

  • Page 22: Communication Connection

    Figure 7: Connection diagram for RS485 Complete 3MEM65 system is assembled with three main units and optionally communication unit: • Individual phase measurement unit. • Power supply unit (based on configuration). • Processing unit (MCU) with IR communication, LED indicator, LCD support and EEPROM. •...
  • Page 23 Auxiliary terminal M-Bus Table Survey Pulse output communication Tariff input connection RS485* *It is recommended to use ferrite bead on communication line RS485 (two turns) to reduce radiated emission. PLEASE NOTE Check labels on the side of the meter to check what modules are built in. User’s Manual...

  • Page 24: First Steps

    3 FIRST STEPS Programming a three-phase electrical energy meter 3MEM65 is very transparent and user friendly. Numerous settings are organized in groups according to their functionality. In this chapter you will find basic programming steps: ISPLAY OF DEVICE INFO LCD U NTERFACE IMITS REEZE COUNTERS...
  • Page 25 3.1 Display of device info Energy meters have LCD display with following layout. Tariff setting for displayed counter/actual tariff (→) Energy import/active power import (←) Energy export/active power export − kWh display kvarh display Actual Value Info: VAh display − −...

  • Page 26: Lcd User Interface

    3.2 LCD User Interface After the electrical connection, the display shows a welcome screen for two seconds then the firmware version for the next two seconds. The following is a measurement screen automatically cycling on the screen, regarding the period that is defined in settings. Regarding the period that is defined in settings, measurement screen cycling is started until any key is pressed.

  • Page 27: Energy Counters

    3.2.1 Energy counters Energy counters are represented as shown on LCD examples bellow (up to 4 resettable counters, letter r representing it). At the top of the screen is settings of energy counter (tariff, import/export/total, active/reactive/apparent), the 8-digit numerical number shows the value of the energy and the letter at the bottom shows actual activity (counting (A)/not counting ( )).
  • Page 28 Phase Voltages: Phase to phase Voltages: Reactive powers: Apparent powers: Power factors: Power angle: Frequency: User’s Manual...

  • Page 29: Display Menu Structure

    3.2.3 Display menu structure The display menu is entered by holding the push button for more than one second. Blinking of the screen indicates that. Short clicks then move user through the main menu. By holding the button when positioned on certain screen ( e.g. measure, set, etc…) the sub-menu is entered. User’s Manual...
  • Page 30 3.2.3.1 Measure sub-menu When in measure sub-menu, short clicks move user through it, allowing her/him to select a dedicated menu. User’s Manual...

  • Page 31: Counter Menu

    3.2.3.1.1 Counter menu Holding button on any of screens 2.1.1 through 2.1.8 sets this screen as a meter screen. In the Counter menu all counters (resettable and non-resettable) are displayed for both – MID and non MID meters. 3.2.3.1.2 Power menu Holding button on any of screens 2.2.1 through 2.2.4 sets this screen as a meter screen.
  • Page 32 3.2.3.1.4 Voltage menu Holding button on any of screens 2.4.1 through 2.4.6 sets this screen as a meter screen. 3.2.3.1.5 Reactive and apparent power menu Holding button on any of screens 2.5.1 through 2.5.8 sets this screen as a meter screen. 3.2.3.1.6 Power factor, power angle and frequency menu Holding button on any of screens 2.6.1 through 2.6.6 sets this screen as a meter screen.
  • Page 33 3.2.3.2 Set sub-menu When in set sub-menu, short clicks move user through it, allowing her/him to select a dedicated menu. The screens 3.2 to 3.4 appear only in case the actual option is available on the meter. User’s Manual...
  • Page 34 3.2.3.2.1 Reset counters menu Holding button on any of screens 3.1.1 through 3.1.5 resets any of counters or all of them respectively. 3.2.3.2.2 RS485 menu Screen 3.2.1 shows the address of RS 485 communication and screen 3.2.2 shows the baud rate. 3.2.3.2.3 M-bus menu Screens 3.3.1 shows the primary address of M-bus communication, screen 3.3.2 shows baud rate and screen 3.3.3 shows the secondary address.

  • Page 35: Info Sub-Menu

    3.2.3.4 Info sub-menu When in info sub-menu, short clicks move user through it, allowing her/him to get required information about smart meter. Screen 4.1 shows the serial number of the smart meter. Screen 4.2 shows the software version present on the smart meter and below the number of Firmware upgrades. Screen 4.3 shows CRC32 of code.
  • Page 36 3.2.4 Set device ModBus address Non configured devices have the same factory Modbus address set to 33. One of the options for changing the Modbus address is the following. Holding the button for more than 6 seconds, the energy meter will switch to Modbus address configuration mode (you will see the screen below). During this time, the 3MEM65 responds to the 149 address via the ModBus.
  • Page 37 3.3.1 Limit A User can set the ON state of an output A, when the threshold is reached (any from the above specified measured values can be set as a threshold). Likewise the OFF state can be set, when the same measured value falls below the OFF state threshold.
  • Page 38 Limit A AND Limit B Limit A AND Limit B is a logical operation, which sets the output A AND B ON, when both output A and output B are in ON. Figure below (example 3) shows the example of output A AND B being ON. For clearer picture refer also to output A (example 1) and output B (example 2) figures.
  • Page 39 Following Modbus registers define Limit function: Address Contents Data Values P. Level LIMIT 40187 Limits enabled None Limit 1 Limit 2 Limit 1 OR Limit 2 Limit 1 AND Limit 2 40188 Display notification None Relay ON Relay OFF 40189 Limit 1: Parameter See OutTypes 40190...
  • Page 40 Power Factor Phase 3 (PF3) PA angle between U and I 100° j1 (angle between U1 and I1) j2 (angle between U2 and I2) j3 (angle between U3 and I3) fi U12 j12 (angle between U1 and U2) 100° fi U23 j23 (angle between U2 and U3) 100°...
  • Page 41 3.4 Freeze counters 3.4.1 Meaning Since 3MEM65 energy meter does not support internaly synchronised real-time clock (RTC) for the purpose of simultaneous capture of measurements, the freeze function is implemented. Use is enabled only when the meter is on. Freeze function enables using 3MEM65 smart meters for billing or sub-billing purposes and to compare sub-metering data with main energy meter.
  • Page 42 3.4.5 Status register of freeze (41905) The purpose of the status register is to test the reliability of RS485 communication. Enter the broadcast command of different identification codes between 1 to FFFD in the freeze status register (41905). Repeatedly send a different identification code to the freeze status register (41905) in order to increase the reliability of receiving commands.
  • Page 43 User’s Manual...
  • Page 44 4 MEASUREMENTS The 3MEM65 is bidirectional energy meter measures voltage and current. From which it is able to calculate two quantities, imported and exported energy. The 3MEM65 energy meter performs measurements with a sampling frequency equal to 3906,25 Hz. ELECTION OF AVAILABLE QUANTITIES ALCULATION AND DISPLAY OF MEASUREMENTS User’s Manual...

  • Page 45: Selection Of Available Quantities

    4.1 Selection of available quantities Microprocesor calculates the RMS voltage, RMS current, active, reactive and apparent power, U-I phase angle, first harmonic of voltage, first harmonic of current, peak to peak voltage, THD of voltage and THD of current. Complete selection of available online measuring quantities is shown in a table below. Meas.

  • Page 46: Calculation And Display Of Measurements

    4.2 Calculation and display of measurements This chapter deals with capture, calculation and display of all supported measurement quantities. For more information about display presentation see chapter 3.2 LCD User Interface. Only the most important equations are described; however, all of them are shown in a chapter APPENDIX C: EQUATIONS with additional descriptions and explanations.

  • Page 47: Power Factor And Power Angle

    4.2.4 Power factor and power angle PF or distortion power factor is calculated as the quotient of active and apparent power for each phase separately and total power angle. It is called distortion power factor since true (distorted) signals are using in equation (all equations are presented in chapter APPENDIX C: EQUATIONS).

  • Page 48: Table Of Contents

    5 TECHNICAL DATA In following chapter all technical data regarding operation of a three-phase electrical energy meter is presented. CCURACY ECHANICAL CHARACTERISTICS OF INPUT LECTRICAL CHARACTERISTICS OF INPUT AFETY AND AMBIENT CONDITIONS DIRECTIVES CONFORMITY IMENSIONS User’s Manual...

  • Page 49: Accuracy

    5.1 Accuracy Measured values Accuracy class Active energy: class 1 EN 62053-21 ±1.5% from ���� to ���� class B EN 50470-3 ���� ���� ���� ���� ���� ±1% from ���� to ���� �������� ������������ ±2.5% from ���� to ���� Reactive energy: class 2 EN 62053-23 ��������...
  • Page 50 Pulse output (option) Pulse rate: 1000 imp/kWh Pulse duration: 32 ms ± 2 ms Rated voltage DC: 27 V max Switched current 27 mA max Standard: EN 62053-31 (A&B) M-BUS Serial communication (option) Type: M-BUS Speed: 300 bit/s to 9600 bit/s (default 2400 bit/s) Protocol: M-BUS Primary address:...

  • Page 51: Safety And Ambient Conditions

    5.4 Safety and ambient conditions According to standards for indoor active energy meters. Temperature and climatic condition according to EN 62052-11. Dust/water protection: IP50 (For IP51 it should be installed in appropriate cabinet.) Operating temperature: -25 °C - +55 °C (non-condensig humudity) Storage temperature: -40 °C - + 70 °C Enclosure:...

  • Page 52: Eu Directives Conformity

    5.5 EU directives conformity 5.5.1 3MEM65 MID certified meters MID approval applies to non-resettable active energy counters. EU Directive on Measuring Instruments 2014/32/EU EU Directive on EMC 2014/30/EU EU Directive on Low Voltage 2014/35/EU EU Directive WEEE 2002/96/EC EU RED Directive 2014/53/EU 5.6 Dimensions 5.6.1 Dimensional drawing Construction...
  • Page 53 6 ABBREVIATION/GLOSSARY Abbreviations are explained within the text where they appear the first time. Most common abbreviations and expressions are explained in the following table: Term Explanation MODBUS Industrial protocol for data transmission Alternating quantity Infrared (optical) communication Root Mean Square Pulse output Power angle (between current and voltage) Power factor...

  • Page 54: Appendix A: Modbus Communication Protocol

    PLEASE NOTE The Modbus table is subject to change without notice. For the latest and complete Modbus table please visit ETI web page. Communication operates on a master-slave basis where only one device (the master) can initiate transactions called ‘Requests’. The other devices (slaves) respond by supplying the requested data to the master.
  • Page 55 Request Frame Starting Register Register Count Slave Function Response Frame Register Data Slave Address Function Code Byte Count HI LO HI LO FE 00 59 96 Request- response cycle example Address number of slave: 21 Function code: 04  30000 Starting register HI…LO: 00…6B ...
  • Page 56 Contents Data Values / Dependencies Address Input Registers 30029 I/O 1 No I/O Tariff Input Digital input 30030 I/O 2 No I/O Pulse Output (SO) Load control Output 30047 30048 Calibration Time Stamp 30051 Digital input voltage range 230V 63V - 110V 30052 Digital input 2 voltage range See Digital input 1 voltage range...
  • Page 57 Contents Data Values / Dependencies Address Input Registers ACTUAL MEASUREMENTS 30105 30106 Frequency 30107 30108 30109 30110 30111 30112 30113 30114 Uavg (phase to neutral) 30115 j12 (angle between U1 and U2) 30116 j23 (angle between U2 and U3) 30117 j31 (angle between U3 and U1) 30118 30119...
  • Page 58 Contents Data Values / Dependencies Address Input Registers ACTUAL MEASUREMENTS 30172 Power Angle Total (atan2(Pt,Qt)) 30173 ϕ1 (angle between U1 and I1) Valid: Reg 30001<7 30174 ϕ2 (angle between U2 and I2) 30175 ϕ3 (angle between U3 and I3) 30181 Internal Temperature 30182 U1 THD%...
  • Page 59 Contents Data Values / Dependencies Address Input Registers ENERGY 30400 CheckSum Status No Error (OK) Bit 0 Error Parameter CRC Bit 1 Error Firmware CRC Bit 2 Error MID-lock Bit 3 Error phase module 1 CheckSum Bit 4 Error phase module 2 CheckSum Bit 5 Error phase module 3 CheckSum Bit 6...
  • Page 60 Address Data Values Contents Level RAM logger 36000 Measurement parameter See OutTypes 36001 Time interval minutes 36002 Number of valid results 36003 Time stamp of last result minutes since midnight (<0 if no time) 36004 36515 Logger table (newest to oldest) Normalised values User’s Manual...

  • Page 61: Average Measurements

    INTERVAL MEASUREMENTS Interval measurements are intended for data collection and synchronization of the time for data reading, trough the communication. The time interval of data reading is programmable, by default is one minute. The minimum and maximum measurements could be read within a given time interval.
  • Page 62 Contents Data Values / Dependencies Address Input Registers AVERAGE MEASUREMENTS THD HARMONIC DATA 35582 U1 THD% 35583 U2 THD% 35584 U3 THD% 35588 I1 THD% 35589 I2 THD% 35590 I3 THD% MAXIMUM MEASUREMENTS 35600 35604 Reserved 35605 35606 Frequency 35607 35608 35609 35610...
  • Page 63 Input Registers AVERAGE MEASUREMENTS THD HARMONIC DATA 35682 U1 THD% 35683 U2 THD% 35684 U3 THD% 35688 I1 THD% 35689 I2 THD% 35690 I3 THD% MINIMUM MEASUREMENTS 35700 35704 Reserved 35705 35706 Frequency 35707 35708 35709 35710 35711 35712 35713 35714 Uavg (phase to neutral) 35715...

  • Page 64: System Commands

    THD HARMONIC DATA 35782 U1 THD% 35783 U2 THD% 35784 U3 THD% 35788 I1 THD% 35789 I2 THD% 35790 I3 THD% LIMIT P MEASUREMENTS (option) 35900 Limit P Value 35901 Limits Status Bit 0 Limit Output State Bit 1 Average P > Limit P Bit 2 Predicted P >...
  • Page 65 Address Contents Data Values P. Level 40013 Reset command register 1 Bit-0 Reset counter 1 Bit-1 Reset counter 2 Bit-2 Reset counter 3 Bit-3 Reset counter 4 Bit-4 Reset alarm output relay 2 40015 IR external relay command action 40016 Load control Output state 40017 Digital input function...
  • Page 66 40184 LCD parameters Bit 0 Counter 1 (Always) 65535 Bit 1 Counter 2 Bit 2 Counter 3 Bit 3 Counter 4 Bit 4 Active Power Total (Pt) Bit 5 Reactive Power Total (Qt) Bit 6 Apparent Power Total (St) Bit 7 Power Factor Total (PFt) Bit 8 Power Angle total...
  • Page 67 Address Contents Data Values P. Level LIMIT 40189 Limit 1: Parameter See OutTypes 40190 Limit 1: Compare relation measurement > limit measurement < limit 40191 Limit 1: ON level % of parameter value -300 40192 Limit 1: OFF level % of parameter value -300 40193 Limit 1: Compare time delay...
  • Page 68 Address Contents Data Values P. Level ENERGY 40401 Active Tariff Tariff input 1..2 Tariff 1..2 40421 Energy Counter 1 Parameter Active Power Reactive Power Apparent Power Active Power Phase 1 Reactive pover Phase 1 Apparent Power Phase 1 Active Power Phase 2 Reactive pover Phase 2 Apparent Power Phase 2 Active Power Phase 3...
  • Page 69 Address Contents Data Ind Values Level LIMIT P 41201 Limit P Value 65535 41202 Predicted Time Counter freeze 41901 Auto freeze interval [minutes] 41902 time to freeze [s] 41903 41904 time from freeze [s] 41905 Freeze status 41906 Current Active Tariff 41907 41908 Energy Counter 1 (resettable)
  • Page 70 SUPPORTED FUNCTIONS AND USAGE Code Code Function References to read from holding registers (4XXXX memory references) to read from input registers (3XXXX memory references) to write to a single holding register (4XXXX memory references) to write to one or more holding register (4XXXX memory references) DATA TYPES DECODING Registers defined in the Modbus database will define data as one of the data types described in the following table:...
  • Page 71 Type Value / Bit Mask Description Unsigned Measurement (32 bit) bits # 31..24 Decade Exponent(Signed 8 bit) bits # 23..00 Binary Unsigned Value (24 bit) Example: 123456*10 stored as FD01 E240 (16) Signed Measurement (32 bit) bits # 31..24 Decade Exponent (Signed 8 bit) bits # 23..00 Binary Signed value (24 bit) Example: - 123456*10...
  • Page 72 Type Value / Bit Mask Description T_Time Time and Date (64 bit) bits # 63..56 1/100s 00 - 99 (BCD) bits # 55..48 Seconds 00 - 59 (BCD) bits # 47..40 Minutes 00 - 59 (BCD) bits # 39..32 Hours 00 - 24 (BCD) bits # 31..24 Day of month 01 - 31 (BCD) bits # 23..16...

  • Page 73: Appendix B: M-Bus

    Secondary Address (UD) consists of: Identification Number: 00000000 – 99999999 8-digit Secondary Address number Manufacturer’s Code: 73 26 2 Byte Company Constant (ETI = “73 26”) Version Number: 01 – FF 1 Byte Medium: 1 Byte Constant Electricit User’s Manual...
  • Page 74 Reset, Restart M-BUS MC350 via Primary/Secondary Address (SND_UD) This Telegram reset/restarts M-BUS MC350. The M-BUS 3MEM65 confirms correct receipt by ACK. If the telegram was not correctly received the M-BUS 3MEM65 will not send an acknowledgement. M-Bus Telegram Total Energy counters 0, 1, 2, 3 Energy counters could represent: +/- active energy, +/-reactive energy or apparent energy and one of 4-th tariff.
  • Page 75 System frequency (Hz/1000) Contains the line frequency 32-bit integer in mHz. DIFE DIFE VIFE VIFE VIFE DATA xx.xx.xx.xx Active Power in Phase 1, 2, 3 (W) Active power in 32bit x 10 (2-3) DIFE DIFE VIFE VIFE DATA xx.xx.xx.xx Current in Phase 1, 2, 3, Neutral (A) Phase current as 32 bit x 10 (9-12) DIFE...

  • Page 76: Appendix C: Equations

    7.4 Appendix C: Equations Definitions of symbols No Symbol Definition Average interval Phase voltage (U or U Phase-to-phase voltage (U or U Total number of samples in a period Sample number (0 ≤ n ≤ N) x, y Phase number (1, 2 or 3) Current sample n Phase voltage sample n Phase-to-phase voltage sample n...
  • Page 77 Power Active power by phases �(���� × i ���� �������� �������� N − a number of periods n − index of sample in a period f − phase designation ���� = ���� + ���� + ���� Total active power ���� t −...
  • Page 78 � ∑ ���� ����=2 �������� ������������ ( % ) = ���� Current THD ���� ���� − value of first harmonic ����1 n − number of harmonic � ∑ ���� ����=2 �������� ������������ ( % ) = ���� Phase voltage THD ����...
  • Page 79 Published by ETI, d.o.o. • Subject to change without notice • Version 1.06 December 2024 • EN K22.433.920...

This manual is also suitable for:

3mem80-bpo-mid3mem65-bt3mem65-brs3mem65-bmb3mem80-bevrspo-mid3mem80-bmb-mid

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