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Chapter 2 Operating the EM720 

Controls and Indicators 

 

 

14 

EM720 Power Quality and Revenue Meter 

Chapter 2   Operating the EM720 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Controls and Indicators 

Push Buttons 

The EM720 provides two sealable push buttons that do not 
have labels. They allow you to scroll through the multi-page 
display screens for local meter reading, to inspect or change 
meter setup parameters, and to control display operations. 

See 

Navigation Buttons

 in Chapter 3 for buttons location and 

functionality. 

Graphical Display Indicators 

The EM720 graphical display is used both for displaying billing 
and instrumentation data, and for indication of the present 
tariff rate and important diagnostic information. See 

Status 

Indicators

 in Chapter 3 for information on graphical status 

indicators. 

Energy Pulse LED Indicators 

The EM720 is provided with two red LED indicators labeled as 
“kWh” and “kvarh” that flash when a load is applied to the 
meter. 

The LED pulse rate in NORMAL mode is indicated on the 
meter nameplate. The standard LED pulse rates are listed in 
the following table. All indicated rates are in secondary units. 

Содержание expertmeter EM720

Страница 1: ...POWER QUALITY AND REVENUE METER EM720 EM720T Operation Manual BG0451 Rev A3 ...

Страница 2: ...lation operation or maintenance of this instrument contact the manufacturer or your local representative or distributor WARNING Read the instructions in this manual before performing installation and take note of the following precautions Ensure that all incoming AC power and other power sources are turned OFF before performing any work on the instrument Failure to do so may result in serious or e...

Страница 3: ...secondary protection if needed Read this manual thoroughly before connecting the device to the current carrying circuits During operation of the device hazardous voltages are present on input terminals Failure to observe precautions can result in serious or even fatal injury or damage to equipment All trademarks are property of their respective owners January 2011 Copyright 2008 2011 SATEC Ltd ...

Страница 4: ...order 25 Operating the Fault Recorder 25 Communicating with the EM720 25 Auxiliary AC DC Backup Power Supplies 29 Chapter 3 Using Front Display 30 Display Operations 30 Navigation Buttons 30 Navigating in Data Display Mode 31 Status Indicators 32 Display Features 33 Measurement Units 34 Data Displays 35 TEST Mode Data Display 35 Billing Period Data Displays 35 Engineering Maximum Demand Data Displ...

Страница 5: ...p 74 Local Settings 76 Display Setup 80 Configuring Digital Inputs 82 Configuring Relay Outputs 84 Using Counters 86 Using Periodic Timers 87 Using Control Setpoints 88 Configuring Billing TOU 93 Configuring Billing Tariff Registers 94 Configuring the Daily Tariff Schedule 95 Configuring the Season Tariff and DST Schedule 96 Configuring Recorders 98 Configuring Meter Memory 98 Configuring the Even...

Страница 6: ...ions with Files 150 Viewing Options 150 Customizing Views 150 Working with Tables 151 Working with Graphic Windows 152 Viewing the Event Log 155 Viewing the Power Quality Event Log 157 Viewing the Fault Log 160 Viewing the Data Log 162 Viewing Waveforms 163 Viewing a Waveform Graph 163 Viewing an RMS Plot 164 Viewing a Frequency Plot 165 Viewing a Spectrum Chart 165 Viewing a Spectrum Table 167 Wa...

Страница 7: ...EM720 Power Quality and Revenue Meter 7 Appendix F Data Scales 215 Appendix G Device Diagnostic Codes 216 Appendix H OBIS Identification Codes 217 ...

Страница 8: ... communication options A high contrast graphical LCD display with backlight allows easy local meter readings and servicing Two serial communication ports infrared and RS232 RS485 a USB port Ethernet and a wireless GSM GPRS modem allow local and remote automatic meter readings and setup though the supplemental communication software or user data acquisition software Meter Highlights Internal Rechar...

Страница 9: ...ylight savings switch dates Tariff switching options automatic via a tariff calendar schedule external via communications or digital inputs Configurable triggering an end of billing period automatic monthly local from the front display remote via communications Automatic recording billing energy maximum demand and cumulative maximum demand registers for last 24 billing periods Automatic 120 day da...

Страница 10: ...tware Fault Recorder Digital Fault recorder three voltage and four current channels up to 8 external digital triggers for monitoring circuit breakers and protection relays onboard overcurrent and undervoltage fault detector zero sequence voltage and current voltage and current unbalance programmable fault thresholds and hysteresis Up to 50 Amp fault currents Ready for use fault reports with the su...

Страница 11: ...thresholds and delays relay control event driven data recording 8 digital counters for counting pulses from external sources and internal events 4 programmable timers from 1 cycle to 24 hours for periodic recording and triggering operations on a time basis Time and Clock High accuracy real time clock with a lithium backup battery 1 ms satellite synchronized clock option IRIG B time code input SNTP...

Страница 12: ...thernet port Modbus TCP and DNP3 TCP protocols IEC 61850 future releases up to 5 simultaneous connections Plug in wireless GSM GPRS modem Modbus TCP and DNP3 TCP protocols Expansion I O and Communication slots 3 expansion slots for plug in I O and communication modules Backup Power Supplies Rechargeable auxiliary battery more than 3 hours operation time with a NiMH battery up to 7 hours operation ...

Страница 13: ... of detecting transient overvoltages with peaks up to 2kV and durations of less than 20 microseconds See the EM720 Installation Manual for technical specifications and ordering options Supplemental Documents BG0450 EM720 Installation Manual BG0457 EM720 Modbus Reference Guide BG0458 EM720 DNP3 Reference Guide BG0460 EM720 IEC 62056 21 Reference Guide BG0459 EM720 IEC 61850 Reference Guide BG0337 P...

Страница 14: ...ttons location and functionality Graphical Display Indicators The EM720 graphical display is used both for displaying billing and instrumentation data and for indication of the present tariff rate and important diagnostic information See Status Indicators in Chapter 3 for information on graphical status indicators Energy Pulse LED Indicators The EM720 is provided with two red LED indicators labele...

Страница 15: ...ng the device energy measurement accuracy without affecting the billing energy and demand data All instrumentation data is still available in TEST mode The front pulse LED indicators flash at a programmable rate in TEST mode and the billing data display shows separate test kWh and kvarh energy readings with an extended 0 001 kWh resolution See Device Options and Mode Control in Chapter 5 on how to...

Страница 16: ...e failures are normally non critical recoverable faults that do not cause a system failure but may cause data loss Hardware failures are often caused by excessive electrical noise in the region of the device If the device continuously resets itself contact your local distributor Device Fault Alarm The EM720 provides a global DEVICE FAULT event flag that is asserted all the time while one of the di...

Страница 17: ...eter billing and tariff system and for the power quality and fault recorders so that events and disturbances can be compared to one another The EM720 can receive time synchronization signal either from a GPS satellite clock that has an IRIG B time code output or from another device that can provide minute aligned time synchronization pulses through relay contacts The EM720 IRIG B port uses unmodul...

Страница 18: ...illing and Energy Metering The EM720 provides true four quadrant energy measurements with Class 0 2S IEC 62053 22 accuracy The following energy quantities are available for instrumentation and billing kWh import Q1 Q4 kWh export Q2 Q3 kWh net Q1 Q4 Q2 Q3 instrumentation kvarh import Q1 Q2 kvarh export Q3 Q4 kvarh net Q1 Q2 Q3 Q4 instrumentation kvarh Q1 Q2 Q3 Q4 quadrants kVAh import Q1 Q4 kVAh ex...

Страница 19: ...ergy billing See Configuring Billing TOU in Chapter 5 on how to configure the meter billing registers and tariff schedule for your application Maximum Demand Registers Any of billing energy registers can be individually linked to the maximum demand and cumulative maximum demand registers providing the same demand tariff structure as you selected for energy registers Tariff Rates The EM720 provides...

Страница 20: ...nergy and maximum demand profile for the last 120 days 15 min energy load profile for 120 days or 30 min profile for 240 days Maximum demand profiling for monthly and daily billing data profiles can be individually configured for every register See Factory Preset Data Log Files in Chapter 5 and Billing and Load Profile Log Files in Appendix C for more information on the file layout and contents Bi...

Страница 21: ...easurement channel 2 Only for power quality evaluation 3 Not affected by loss compensation Instrument Transformer Correction Ratio and phase angle error correction can be applied to external CTs and PTs to achieve overall metering installation accuracy or be used in any metering installation to optimize the accuracy of the metering data The user can program up to 8 test points for both ratio corre...

Страница 22: ...he load side while the billing point is on the supply side and negative in the opposite direction The instantaneous kW and kvar losses for iron and copper can be read and inspected via communications See Transformer Line Loss Compensation Setup in Chapter 5 on how to program the loss constants and enable compensation in your meter See Device Options and Mode Control on how to enable and disable co...

Страница 23: ...der in Chapter 5 External synchronization of power demand intervals select a digital input as an external power demand sync source see Basic Meter Setup in Chapter 5 External synchronization of the meter clock select a digital input as a time synchronization input see Local Settings in Chapter 5 and provide minute aligned pulses from the external master clock source All digital inputs have a user ...

Страница 24: ...ices All controller operations can be recorded to the meter Event log with indication of the event time source and a trigger value See Using Control Setpoints in Chapter 5 on how to configure the meter logical controller for your application Operating the Event Recorder The Event recorder automatically records time tagged self supervision events related to configuration changes resets and device d...

Страница 25: ...nt voltages between phase conductors and a ground terminal and between the neutral and a ground terminal regardless of a wiring configuration See the EM720 Installation Manual for the terminal location and wiring diagrams To help you check your voltage connections the EM720 provides 1 cycle phase RMS voltages V1x through V3x and 1 cycle neutral voltage V4x relative to the ground terminal that you ...

Страница 26: ...cations Most of the replaceable communication modules you can order with your EM720 have an additional RS 232 RS 485 serial port It is easily configurable for either RS 232 or RS 485 serial communications See the EM720 Installation Manual for the serial port wiring An RS 232 RS 485 serial port is identified in the EM720 as port COM3 If you installed communication modules with more than one serial ...

Страница 27: ...ons Connection through the Ethernet port does not require device identification The meter responds to any device address and returns the received address in the response message The meter also provides three TCP clients SNTP client for periodic synchronization of the meter clock with a publicly available SNTP server see Setting Up SNTP Client eXpertPowerTM client for communications with the propri...

Страница 28: ...cond bad quality the signal strength is less than 109 dBm Shut off the signal strength is not known or not detected See Setting Up Dial Up GPRS Network in Chapter 5 on how to configure the GPRS modem and how to check a dynamically assigned IP address the meter got from the GPRS network You can also check the meter IP address and the quality of the received signal via the Device Info display see De...

Страница 29: ...Supplies An auxiliary 24VDC or 85 265VAC 90 290VDC backup power supply module can be provided for powering the meter from an external power source like a station battery in the event of power outages It can be used either as a replacement for the internal auxiliary backup battery or as an additional backup source for maintaining continuous uninterrupted operation of the meter The module can be ins...

Страница 30: ...factory set meter parameters or resetting maximum demands counters and device diagnostics messages The display is normally updated once per second except of the clock display where the update rate changes to twice per second Navigation Buttons The EM720 is provided with two sealable navigation buttons that do not have labels See the picture above for button locations and their functionality You ca...

Страница 31: ...nd then released the current display returns to the start page in some pages an extended press for more than 5 seconds is used as a shortcut for immediate entering a specific programming menu Navigating in Data Display Mode The following table gives a summary of the button operations in data display mode Button Press Operations SCROLL Short press Scroll through pages SELECT ENTER Short press Scrol...

Страница 32: ...tor Icon Event Priority Description High Low lithium battery indicator with auto reset Indicates that the battery voltage is below its operational limit The battery should be checked and replaced See the meter installation manual for the battery replacement procedure The icon is automatically shut down after the battery voltage returns to its normal value The battery date and operation time can be...

Страница 33: ...dicator Icon Description All voltages are present and above the voltage dip threshold Blinking phase indicator the phase voltage is below the defined voltage dip threshold Possibly indicates an incorrect meter nominal voltage setting see Basic Meter Setup in Chapter 5 Dashed phase indicator the phase voltage is either missing or below the voltage interruption threshold If the phase voltage is belo...

Страница 34: ... display automatically enters auto scrolling if no button is pressed for the Auto Return interval when the Auto Return feature is enabled or in 1 minute if this feature is disabled In the last case the scroll sequence is restored from the point where it was interrupted To stop auto scrolling press briefly any button if the backlight is on else press briefly any button twice since the first press o...

Страница 35: ...test kWh and kvarh energy registers readings in primary units with an extended 0 001 kWh resolution Extended press SCROLL SELECT ENTER is a shortcut for immediate entering the TEST mode setup menu Billing Period Data Displays The EM720 provides four billing data displays one for the present billing period and others for three previous billing periods All displays have a layout shown in the followi...

Страница 36: ...illing period displays for four configured billing registers kWh imported and exported kvarh imported and exported and for three active tariff rates The actual register contents in your installation may be different depending on your selection of register sources Clock display Indicates present time and date The date order can be changed via the Local Settings setup menu see Local Settings in Chap...

Страница 37: ...rh Tariff 1 energy reading of register 1 imported kWh Tariff 2 energy reading of register 1 imported kWh Tariff 3 energy reading of register 4 exported kvarh Total maximum demand reading of register 1 imported kW Total maximum demand reading of register 4 exported kvar Tariff 1 maximum demand reading of register 1 imported kW Tariff 3 maximum demand reading of register 4 exported kvar Total cumula...

Страница 38: ...trates billing displays for the three previous billing periods Displays for the last billing period BILL 1 and for two preceding billing periods BILL 2 and BILL 3 look the same Previous billing period data general page period start date and time period end date and time and period duration in days Total energy reading of register 1 imported kWh Total energy reading of register 2 exported kWh Tarif...

Страница 39: ...ported kW Tariff 1 cumulative maximum demand reading of register 1 imported kW Tariff 3 cumulative maximum demand reading of register 4 exported kvar Engineering Maximum Demand Data Display Maximum demand displays show engineering maximum demands not billing maximum demands for powers voltages currents and total harmonics Each quantity is displayed with the date and time of the last update From an...

Страница 40: ...kVA maximum demand kW export maximum demand kvar export capacitive maximum demand V1 maximum demand Indicate V12 voltage in line to line configurations V3 maximum demand Indicate V31 voltage in line to line configurations I1 maximum demand I4 maximum demand V1 THD maximum demand V3 THD maximum demand I1 THD maximum demand ...

Страница 41: ...phase angles displays to check the order of phases when connecting wires to the meter terminals Phase to neutral voltages Only displayed in 4 wire configurations with a neutral Phase to phase voltages Phase currents Auxiliary current Neutral current Frequency Total powers Total power factor Voltage unbalance Current unbalance Phase voltage THD Indicate phase to phase voltage THD in line to line co...

Страница 42: ...the nominal device voltage Primary ratings of the external current transformers main and auxiliary current inputs and the nominal device frequency Power demand period number of blocks x block demand period and voltage and ampere demand periods Device Info Display The device info display provides different service information that may be required for meter identification and inspection like product...

Страница 43: ...eration time Auxiliary battery status and operation time Battery status and voltage Battery replacement date Meter firmware information Host processor firmware version Fast transient coprocessor firmware version Host boot loader firmware version Memory information Program flash memory size Data flash memory size Serial communication ports info network address baud rate and communication protocol E...

Страница 44: ...here are diagnostic messages the i diagnostic icon at right on the display flashes until you clear the device diagnostics Some of the diagnostics events are cleared automatically as the event source disappears See Device Diagnostic Codes in Appendix G for a full list of diagnostic messages and their meanings See Clearing Device Diagnostics for information on how to clear the device diagnostics fro...

Страница 45: ...just continue moving through the rest of digits until you reach the desired place Once the number is set to the desired value press and hold the SELECT ENTER button for 1 2 seconds to save your new setting To reject your changes and restore the previous value use a short press on the SELECT ENTER button to return to the higher level window Password Security The setup menus are secured by 8 digit u...

Страница 46: ...al port setup Low Medium COM3 COM3 serial port setup Low Medium Net Ethernet network setup Low Medium Local Local settings Low Medium Access Meter passwords setup High High Loader Launches flash download via a local serial port Medium Medium Access to the RESET menu entries is allowed depending on your security level as shown in Section Resetting Accumulators and Log Files in Chapter 6 If your sec...

Страница 47: ...ess on the SELECT ENTER button to move through digits 3 Once the desired value is selected press the SELECT ENTER button for more than 1 second to save your new setting You return to the upper right window and can continue scrolling through the rest of options or can return to the main menu If you wish to leave the option value unchanged use a short press on the SELECT ENTER button to return to th...

Страница 48: ... EM720 If you connect your PC to the EM720 via s serial infrared or RS 232 RS 485 port ensure that the port is set to the Modbus RTU mode Software Installation Installing PAS You need PAS V1 4 or higher to work with the EM720 To install PAS on your PC 1 Insert the installation CD supplied with your EM720 into CD drive 2 Open My Computer on your Desktop 3 Click on your CD drive icon select the PAS ...

Страница 49: ...SB cable When the EM720 is powered up Windows automatically detects the meter and launches the hardware installation wizard The following example demonstrates an installation of the USB driver on Windows XP 1 The Found New Hardware Wizard dialog box is displayed as follows 2 Select Install from a list or specific location and click Next 3 Click Browse ...

Страница 50: ...ing PAS Software Software Installation 50 EM720 Power Quality and Revenue Meter 4 Point to the USB folder located in the PAS installation directory and click OK 5 Click Next 6 Click Finish to complete installation ...

Страница 51: ...mmunication and configuration data for your meter in a configuration database called a site database During configuration store all setup data to the site database so that PAS recognizes device properties regardless of whether your meter is online or offline To create a new database for your meter 1 Select Configuration from the Tools menu 2 Click the Sites button on the right hand side 3 From the...

Страница 52: ...rom the Tools menu Under the Communication group on the Instrument Setup tab select the type of connection for your device 2 Set the device communication address you assigned to the EM720 port When communicating via the Ethernet or a GPRS modem the EM720 responds to any address you select 3 In the Sampling Rate box select a rate at which PAS updates data on your screen when you continuously poll t...

Страница 53: ...ct Modbus ASCII communications If there are many applications running on your PC PAS might be prevented from responding to received characters fast enough and may close the communication while the device is still transmitting If you frequently receive the Communication error message try to increase Break Time out This time is added to the message transfer time and excessive increasing it may slow ...

Страница 54: ...ait for answer box adjust the time that PAS waits for a connection before announcing an error and the number of retries PAS uses to receive a response from the device if communications fail Communicating through a GSM GPRS Modem You should use Windows Dial Up networking to access the EM720 via your wireless GSM GPRS modem See your local GSM GPRS modem manual and Windows help on how to create a new...

Страница 55: ... you select the protocol Select Modbus RTU TCP for Modbus TCP or DNP3 for DNP3 TCP 5 In the Wait for answer box adjust the time that PAS should wait for a connection before announcing an error and the number of re tries that PAS should use to receive a response from the device if communications fail 6 In the Connection box select the Dial up connection you created for the EM720 See Dial Up Network...

Страница 56: ...Chapter 4 Using PAS Software Setting up Communications 56 EM720 Power Quality and Revenue Meter 2 Click Dial Communicating through a USB On the Instrument Setup tab click USB Port and then click OK ...

Страница 57: ... the site database first PAS uses this data as a reference when arranging other meter setups To save your setup to another site database 1 Click the Save as button 2 Select the target database from the file pane 3 Click OK You can also reuse a setup from another site by copying it to your present site database To copy a setup from another site s database 1 Click Open 2 Select the desired source si...

Страница 58: ... once 1 Check the On line button on the toolbar 2 Select the device site from the list box on the toolbar 3 Select Download Setups from the Meter Setup menu NOTE The passwords setup is not downloaded via the Batch Download You can only download it individually via the Administration Setup Passwords dialog see Configuring Meter Passwords in Chapter 5 Uploading Setups from the Meter Individual Uploa...

Страница 59: ...tch Upload and may not be read from the meter When you open the Passwords setup dialog all passwords are zeroed Authorization and Security Every time you try to send the setup data to the meter you are prompted for the password Enter the password and click OK If your authorization was successful you are not prompted for the password again until you close the dialog window See Meter Security in Cha...

Страница 60: ...ter 4 Configuring Communications Setting Up Serial Communication Ports Using the Front Display Select COM1 through COM3 from the main menu See Viewing and Changing Setup Options in Chapter 3 for information on navigating in menus See the table below for available communication options Using PAS Select Communications Setup from the Meter Setup menu and then click on the Serial Ports Setup tab In th...

Страница 61: ...1 0 65532 1 Device network address Baud Rate Baud rate COM1 300 19200 kbps COM2 3 300 115 2 kbps 19 2 kbps The port baud rate Data Parity Data format and parity 7E 8N 8E 8N 7E data format should not be used with the Modbus RTU and DNP3 protocols Send Delay Response delay 0 1000 ms 5 ms The minimum time after the last request character is received to start the transmission Chr Timeout Character tim...

Страница 62: ...ommunications Setup from the Meter Setup menu and then click on the Network Setup tab The following table lists available network options Display Label Parameter Default IP Address Device IP Address 192 168 0 203 Subnet Mask Network Subnet Mask 255 255 255 0 Def Gateway Network Default Gateway 192 168 0 1 NOTE When you change the device network settings through the Ethernet port the device port re...

Страница 63: ...eway 192 168 10 204 The PPP network default gateway Not used in a GPRS network Redial Attempts 0 1000 0 forever 0 The number of dial attempts to connect to a remote modem if a connection was unsuccessful Connection Timeout 0 9999 sec 120 The modem cancels a call if not connected within the connection timeout time Time Between Redial Attempts 0 9999 sec 60 A time delay between redials Idle Time Bef...

Страница 64: ...ame APN internet The mobile network APN name consult with your network operator NOTE Do not change the default modem connection options Consult with your GPRS network operator if the network subnet mask needs to be extended Setting Up SNTP Client Select Communication Setup from the Meter Setup menu and then click on the SNTP Client Setup tab The SNTP client can provide periodic synchronization of ...

Страница 65: ...f a secondary SNTP server in the event of temporary unavailability of the primary server The default SNTP server IP addresses belong to Stockholm and Berlin university servers Setting Up eXpertPower Client Select Communication Setup from the Meter Setup menu and then click on the ExpertPower Client Setup tab The EM720 has an embedded eXpertPowerTM client that provides communications with the eXper...

Страница 66: ...XpertPower server NOTES 1 Do not enable the eXpertPower client in your meter if you do not use the eXpertPowerTM service 2 Do not change the connection period setting The eXpertPower server updates it automatically Setting Up TCP Notification Client Select Communication Setup from the Meter Setup menu and then click on the TCP Notification Client Setup tab The TCP notification client can establish...

Страница 67: ...t notifications to a server configure a setpoint to respond to desired triggers or to periodic time events and add the Send notification action to the end of the setpoint actions list see Using Control Setpoints Setpoint operation events triggered by regular analog and digital triggers are reported twice when the event starts and when it ends except of the pulsed events and time triggers that will...

Страница 68: ...g and Changing Setup Options in Chapter 3 for information on navigating in menus See the table below for available options Using Pas Select General Setup from the Meter Setup menu The following table lists available meter configuration options Display Label Parameter Options Default Description Basic Configuration Wiring Wiring Mode See Table below 4LN3 The wiring connection of the device PT Ratio...

Страница 69: ...re Demand Period 0 9000 sec 900 sec The length of the demand period for ampere demand calculations Hrm Dmd Per THD Demand Period 0 9000 sec 900 sec The length of the demand period for THD demand calculations TDD Setup Max Dmd Load I Max Load Current 0 20 000 A 0 CT primary 0 The maximum demand load current for phase current inputs I4 M Dmd Load I4 Max Load Current 0 20 000 A 0 CT primary 0 The max...

Страница 70: ...from the clock display as a shortcut for immediate entering the TEST mode setup See Viewing and Changing Setup Options in Chapter 3 for information on navigating in menus See the table below for available options Using PAS Select General Setup from the Meter Setup menu and then click on the Device Options tab NOTE Test Mode options and other device options have different security levels You may no...

Страница 71: ...led OFF Enables instrument transformer correction only via the front display Loss Comp OFF disabled ON enabled OFF Enables transformer line loss compensation only via the front display Test Mode Test Mode Energy LED Test OFF disabled ON enabled Disabled Setting this option puts the meter into TEST mode Pulse Const Energy LED pulse rate Wh impulse 0 01 0 25 Wh imp 100 000 4 000 imp kWh 0 10 Wh imp ...

Страница 72: ...ications by writing a tariff number to the meter tariff register see the EM720 Modbus Reference Guide for information on the active tariff register location external via digital inputs by providing a tariff code on the meter tariff inputs If a digital input option is selected you can use 1 to 3 consequent digital inputs as tariff inputs The following table shows the number of inputs required depen...

Страница 73: ...ion factor and phase angle error are specified Ratio Correction Factor 0 900 1 100 The ratio of the true transformer ratio to the marked ratio Phase Angle Error 600 minutes The phase displacement in minutes between the primary and secondary values The phase angle of a transformer is positive when the secondary value leads the primary value You can define a total of 56 correction points for ratio a...

Страница 74: ...e power and energy readings of the meter when the metering point and point of billing are physically separated by a power transformer or a power line Select General Setup from the Meter Setup menu and then click on the Transformer Line Loss Compensation tab The available options are described in the following table Parameter Options Description Metering and Location Loss Compensation Enabled Disab...

Страница 75: ...m Reactance Ohm mile Power line inductance in Ohm mile or Ohm km Load side Power Line Data Length miles Power line length in miles or km Resistance Ohm mile Power line resistance in Ohm mile or Ohm km Reactance Ohm mile Power line inductance in Ohm mile or Ohm km Loss Constants Iron Watt Losses LWFe Percent watt losses due to iron Copper Watt Losses LWCu Percent watt losses due to copper Iron VAR ...

Страница 76: ...transformer datasheet All transformer data is given for a 3 phase system 6 If the supply side or and load side power line losses are to be included in compensation specify the length of power lines and their resistance and reactance per mile or km To change the length units select Options from the Tools menu click on the Preferences tab and then check the preferred distance units 7 After all data ...

Страница 77: ...ylight saving time DST Disabled Enabled Scheduled Disabled Disabled the RTC operates in standard time only Enabled the time is automatically updated at the predefined fixed DST switch dates Scheduled the time is automatically updated at the calendar scheduled DST switch dates Start Month DST Start Month January December March The month when DST begins Start Week DST Start Week First Second Third F...

Страница 78: ... option is disabled the device clock should be manually adjusted for daylight saving time Time Synchronization Sources The EM720 can synchronize its clock with a remote SNTP server via the Internet or receive the time synchronization signal either from a GPS clock with an IRIG B time code output or from an external device providing second aligned 1PPS or minute aligned 1PPM pulses Using the IRIG B...

Страница 79: ... SNTP Enable SNTP client operation and configure it if required see Setting Up SNTP Client When an SNTP server is not available or when a connection with a server is restored the corresponding event is automatically recorded to the device Event log Using Time Synchronization Pulses Select one of the available digital inputs as either 1PPS or 1PPM synchronization input The transition edge of an ext...

Страница 80: ...information on navigating in menus See the table below for available display options Using PAS Select General Setup from the Meter Setup menu and then click on the Display Setup tab The available options are listed in the table below See Display Operations in Chapter 3 for more information on display functionality and configuring display options See Data Displays for information on display page co...

Страница 81: ...9 1 9 1 2 9 1 3 9 1 4 9 1 9 Selects the display sequence for auto scrolling from 9 data displays see Data Displays for display enumeration Auto Return Auto Return Disabled 1 5 10 15 20 25 30 min 5 Defines the time delay before returning to the default page Def Page Default Page 1 2 1 10 2 1 2 10 9 1 9 10 1 2 Specifies the default display page If a page is not available in present mode the followin...

Страница 82: ... meter select General Setup from the Meter Setup menu and then click on the Digital Inputs tab Digital inputs that are not present in your meter are not shown The available options are shown in the following table Parameter Options Default Description Pulse input mode PULSE MODE KYZ MODE PULSE MODE Pulse mode either leading or trailing edge of the input pulse is recognized as an event KYZ mode bot...

Страница 83: ...roup Triggering the Fault Recorder through Digital Inputs Check the Fault recorder boxes for digital inputs you wish to use as triggers for the Fault recorder When an open to closed state transition is detected on the digital input the global External Trigger event is generated in the meter If the external triggers are enabled in the Fault recorder see Configuring the Fault Recorder it triggers th...

Страница 84: ...er Options Default Description Operation mode UNLATHCED LATCHED PULSE KYZ UNLATCHED Unlatched mode the relay goes to its active state when the control setpoint is in active operated state and returns to its non active state when the setpoint is released Latched mode the relay goes to its active state when the control setpoint goes to active state and remains in the active state until it is returne...

Страница 85: ...stored to what it was prior to loss of power Pulse width 20 1000 ms 100 ms The actual pulse width is a multiple of the 1 2 cycle time rounded to the nearest bigger value The pause time between pulses is equal to the pulse width Pulse source NONE kWh IMP kWh EXP kvarh IMP kvarh EXP kvarh TOT kVAh NONE Links a pulse relay to the internal energy pulse source The relay must be set into either pulse or...

Страница 86: ...ter Each counter can also be incremented through the Control Setpoints in response to any internal or external event To configure the meter counters select General Setup from the Meter Setup menu and then click on the Pulse Event Counters tab The available options are described in the following table Option Range Default Description Pulse Input None DI1 DI8 None Links a digital input to the counte...

Страница 87: ... expired the timer generates an internal event that can trigger any setpoint see Using Control Setpoints The programmable time interval can be from 1 cycle and up to 24 hours Though it is defined in 0 001 second units the actual value will be rounded in the meter to a nearest bigger 1 2 cycle multiple To configure interval timers select General Setup from the Meter Setup menu and then click on the...

Страница 88: ... with up to four arguments using OR AND logic Whenever an expression is evaluated as true the setpoint performs up to four concurrent actions that can send a command to the output relays increment or decrement a counter or trigger a recorder To program the setpoints select General Setup from the Meter Setup menu and then click on the Control Alarm Setpoints tab The available setpoint options are d...

Страница 89: ...is linked to the meter clock and triggers Data logs 1 and 2 on a 15 minute time basis Setpoint 16 is factory preset to provide energy load profile recording to Data log 12 at 15 minute intervals It is protected from changes except of the time trigger operate limit that you can set to any value from 1 to 60 minutes on your selection Using Logical Expressions Logical operators OR AND are treated in ...

Страница 90: ... for a trigger only once when a positive transition edge is detected on the trigger input The examples of pulsed events are pulse inputs transition pulses on the digital inputs internal pulsed events energy pulses and time interval pulses and events generated by the interval timers The logical controller automatically clears pulsed events at the end of each scan so that triggers that used pulsed e...

Страница 91: ...t Operations Two optional delays can be added to each setpoint to extend monitoring setpoint triggers for a longer time before making a decision on whether the expected event occurred or not When a delay is specified the logical controller changes the setpoint status only if all conditions are asserted for a period at least as long as the delay time Although a delay can be specified with a 1 ms re...

Страница 92: ...ecords related to the same time Recording Setpoint Events Time tagged setpoint events can be recorded to the Event log if you put the corresponding action to the setpoint action list If you select to record setpoint operations into the Event log define in the action target box which transition events you want to be recorded when the setpoint is operated when it is released or both events The Event...

Страница 93: ... for energy registers The meter tariff structure supports 8 different tariff rates using an arbitrary tariff schedule A total of 4 types of days and 4 seasons are supported with up to eight tariff changes per day The first four billing registers in your meter are pre configured at the factory to store imported and exported kWh and imported and exported kvarh You can change the factory assignments ...

Страница 94: ...gisters if TOU is enabled Always enabled for all configured billing registers Dmd Profile Unchecked Checked Unchecked Enables recording maximum demand registers in monthly daily billing profile files both total and tariff registers if TOU is enabled Sum Profile Unchecked Checked Checked Enables recording total summary registers in monthly daily billing profile files Always enabled for all configur...

Страница 95: ...Register Source List Source Input None kWh IMPORT KWh EXPORT kvarh IMPORT kvarh EXPORT kvarh Q1 kvarh Q2 kvarh Q3 kvarh Q4 kVAh TOTAL kVAh IMPORT kVAh EXPORT DI1 DI8 None Links an internal or external energy source to the billing register Multiplier 0 001 to 100 000 1 000 The multiplication factor for the energy source Not effective for internal sources Target Reg 1 Reg 10 None Defines the target ...

Страница 96: ...u specified will be in use until 00 00 hours on the next day NOTE The billing monthly and daily profile files and your billing data display are automatically configured for the number of active tariffs you defined in the meter TOU daily profile Configuring the Season Tariff and DST Schedule The EM720 TOU calendar provides a season tariff schedule and an option for scheduled daylight savings switch...

Страница 97: ...t does not matter which order of weekdays or months you select the meter recognizes the correct order 3 For exception days like designated holidays select a specific day either by specifying a day and month or by selecting a month a week and a weekday within the month NOTE The EM720 TOU calendar provides an embedded schedule of Hebrew holidays till 2039 for Israeli customers To enable the automati...

Страница 98: ...s survey data You cannot change the file records structure but you can still change the amount of memory allocated for these files The remaining memory can be freely partitioned If you wish to change the factory settings follow the guidelines in the next section Configuring Meter Memory To view the present memory settings select Memory Log from the Meter Setup menu and then click on the Log Memory...

Страница 99: ...6 The number of parameters in a single data record The device memory can be partitioned for a total of 22 log files Event log 16 Data logs 3 Waveform logs EN50160 PQ event log Fault event log Memory is allocated for each file statically when you set up your files and will not change unless you re organize the files To change the file properties or to create a new file 1 Double click on the file yo...

Страница 100: ...ents Factory set Configuration 1 Event log 21504 1000 1000 2 Data log 1 439296 5760 5760 Instrumentation 15 min data trending for 60 days 3 Data log 2 439296 5760 5760 Instrumentation 15 min data trending for 60 days 10 Data log 9 102400 12 56 56 EN50160 compliance statistics 11 Data log 10 38912 3 56 56 EN50160 harmonics survey 13 Data log 12 600064 11520 11520 15 min energy load profile for 120 ...

Страница 101: ... operations Each setpoint should be individually enabled for recording to the Event log To log setpoint operations add the Event log action to the setpoint actions list When a setpoint event happens the Event recorder logs all setpoint conditions that caused the event and all setpoint actions performed in response to the event Logging actions themselves are not recorded to the Event log Configurin...

Страница 102: ...OK and then send your new setup to the meter or save to the device database To define the contents of the file 1 Highlight the data log file row with the left mouse button and then click on the Setup Recorder button or click on the Data Recorder tab and select the corresponding log number 2 Configure the list of parameters to be recorded in a log file You are not allowed to select more parameters ...

Страница 103: ...ntities You can freely change the list of recorded parameters and the update rate for both files Periodic recording data to these files is triggered by Setpoint 1 that is linked to the meter clock To change the periodic rate at which data is recorded change the time interval for the MINUTE INTERVAL trigger in Setpoint 1 See Using Control Setpoints in Chapter 5 Data Log 1 Data Log 1 is configured f...

Страница 104: ... factory pre configured list of parameters for Data log 13 is shown in the following table Data Log 13 No Parameter 1 1 2 cycle voltage V1 V12 2 1 2 cycle voltage V2 V23 3 1 2 cycle voltage V3 V31 4 1 2 cycle neutral zero sequence voltage V4 5 1 2 cycle current I1 6 1 2 cycle current I2 7 1 2 cycle current I3 8 1 2 cycle current I4 9 1 2 cycle zero sequence voltage Data Log 14 Data Log 14 is linke...

Страница 105: ...d for last 24 billing periods The file is updated at an end of billing period normally once a month Data log 16 is pre configured for daily billing energy and maximum demand recording for the last 120 days It is automatically updated once a day You cannot manipulate these files and may not reset them unless you have special permissions See Billing and Load Profile Log Files in Appendix C for the f...

Страница 106: ...xtend for as long as trigger conditions exist plus a user defined post event time of up to 2048 cycles possibly extended to complete a file record The maximum length for an active trigger is limited to avoid continuous triggering The minimum record length can be extended by post event time if needed NOTE In event controlled mode waveform triggering on end of a PQ or fault event or by a pulsed even...

Страница 107: ...te to store the required number of events series is defined as follows Number of Records Number of Records per Series x Number of Series For example to record 64 cycle waveforms sampled at a rate of 32 samples per cycle the number of records required for one waveform series would be Number of Records per Series 32 x 64 512 4 To allocate space sufficient to store 20 waveform events series the wavef...

Страница 108: ...4 at 64 samples cycle 4 2712 at 128 samples cycle 2 1356 at 256 samples cycle 1 at 1024 samples cycle The maximum waveform length per event in cycles including pre event and post event time Pre event Cycles 1 20 Pre event time in cycles to be recorded prior to event Post event Cycles 0 2048 Post event time in cycles to be recorded after end of event in event controlled mode Num of Channels 1 7 The...

Страница 109: ...Chapter 5 Configuring the EM720 Configuring Recorders EM720 Power Quality and Revenue Meter 109 5 Save your waveform setup to the device database and then send it to the meter ...

Страница 110: ...r synchronous recording during fault events To configure the Fault recorder 1 Select Memory Log from the Meter Setup menu and then click on the Fault Recorder tab 2 Enable fault triggers suitable for your application 3 If you wish to change the default settings adjust thresholds and hysteresis for your fault triggers 4 Select the waveform and data logging options for fault events 5 Download your s...

Страница 111: ... fault event To enable or disable the Fault recorder in your meter 1 Check or uncheck the Recorder Enabled checkbox 2 Send the new setting to the device Configuring Analog Triggers Voltage and current thresholds are normally specified as a percent of a nominal reference voltage and current The voltage reference is the line to neutral PT secondary voltage for the 4LN3 and 3LN3 wiring configurations...

Страница 112: ...the Fault recorder FAULT DETECTED the fault detector has detected a fault event using the device s own measurements EXTERNAL TRIGGER the Fault recorder has been launched by an external trigger through one of the digital inputs FAULT EVENT the Fault recorder has been launched either by its own fault detector or by an external trigger These events can be found under the STATIC EVENTS group in the se...

Страница 113: ...50160 Compliance Statistics Log Data log file 9 is automatically configured in the EM720 for recording EN50160 compliance statistics Appendix D lists parameters recorded to the file The file is arranged as a multi section data log file where each voltage characteristic statistics is stored in a separate section Along with EN50160 compliance statistics recorded at the end of each evaluation period ...

Страница 114: ...urve chart for assessing the minimum equipment immunity The PQ recorder is programmable to trigger the waveform recorder to record the fault waveforms before during and after the PQ event for detailed event analysis EN50160 Evaluation Limits and Options Limits for evaluation of the EN50160 voltage characteristics can be set via the EN50160 PQ Recorder Setup and for harmonic and interharmonic volta...

Страница 115: ...Check the Enabled box for the voltage characteristics you want to be recorded to the PQ event log You can individually enable or disable recording PQ events related to specific characteristics Notice that the interharmonic voltage and mains signaling voltage evaluation should be also enabled in the meter via the EN50160 Advanced Setup 4 Disabling recording events to the PQ log does not prevent the...

Страница 116: ...nute rate Before Cycles 0 20 cycles 4 The number of cycles to be recorded prior to the event After Cycles 0 20 cycles 4 The number of cycles to be recorded after the event Log No 14 14 Specifies the data log file used for data recording on the fault event Waveform log options allow recording waveforms both at the start and at the end of an event Since voltage variations can last from some seconds ...

Страница 117: ...nts When the PQ recorder detects a power quality fault it generates the specific internal event PQ EVENT that can be monitored through a control setpoint The event is asserted all the time while the fault condition exists The PQ EVENT trigger is used to give a power quality fault indication via relay contacts or can be combined using the AND operator with timer ticks for periodic data recording at...

Страница 118: ...ed Setup tab 2 Change the EN50160 evaluation options if required 3 Download your setup to the device The default EN50160 evaluation options set in your device are shown in the picture below The available options are listed in the following table Option Range Default Description EN50160 Compliance Statistics Evaluation Disabled Enabled Enabled Enables the EN50160 evaluation Evaluation Period Daily ...

Страница 119: ...nics up to order 25 50 25 Defines the highest harmonic order for evaluation of the interharmonic voltages Mains Signaling Voltage Evaluation Disabled Enabled Disabled Enables the evaluation of the mains signaling voltages 1st Signaling Frequency 110 3000 Hz 183 0 Hz Specifies the mains signaling frequency for the compliance evaluation 2nd Signaling Frequency 110 3000 Hz 191 0 Hz Specifies the main...

Страница 120: ...sed using a single request by re mapping them to adjacent addresses Initially these registers are reserved and none of them points to an actual data register To build your own Modbus register map 1 From the Meter Setup menu select Protocol Setup and click on the Modbus Registers tab 2 Click on the Default button to cause the assignable registers to reference the actual default device register 1177...

Страница 121: ...DNP3 Data Object Library document available from the DNP User s Group on the DNP3 object types Parameter Options Default Description Binary Inputs BI Number of BI to Generate events 0 64 3 21 The total number of BI change event points for monitoring Binary Input Object Single bit With Status Single bit The default BI object variation for requests with qualifier code 06 when no specific variation i...

Страница 122: ...iation is requested DNP General Options 16 bit AI Scaling Disabled Enabled Enabled Allows scaling 16 bit analog input objects see description below 16 bit BC Scaling x1 x10 x100 x1000 x1 Allows scaling 16 bit binary counter objects see description below Re mapping Event Points Disabled Enabled Disabled Allows re mapping event points starting with point 0 SBO Timeout 1 2 30 sec 10 Defines the Selec...

Страница 123: ... counter value is reported being divided by the selected scaling unit from 10 to 1000 To get the actual value multiply the counter reading by the scaling unit Configuring DNP Class 0 Response The most common method of getting static object information from the device via DNP is to issue a read Class 0 request The EM720 allows you to configure the Class 0 response by assigning ranges of points to b...

Страница 124: ... or Class 3 requests You can link any change event point to any event class upon the event priority Refer to the EM720 DNP3 Reference Guide for more information on polling event classes via DNP A change event point index is normally the same as for the corresponding static object point To use independent numeration for event points enable re mapping event point indices via DNP Options setup see ab...

Страница 125: ...ter for each event point 3 For AI and BC points select a relation and an operating threshold or a deadband to be used for detecting events All thresholds are specified in primary units The following relations are available Delta a new event is generated when the absolute value of the difference between the last reported point value and its current value exceeds the specified deadband value More th...

Страница 126: ...he return threshold is 0 05 Hz for frequency and 2 of the operating threshold for all other points 4 Check the Ev On box for the points you wish to be included into event poll reports 5 In the Ev Class box select the event poll class for the change event points 6 Repeat these steps for all points you want to be monitored for events 7 Click Send to download your setup to the device ...

Страница 127: ... setting 5 Setup the remaining passwords and save them to the meter Using PAS PAS allows you to prepare and save the passwords in the meter site database and then download them at once to your meter or to multiple meters or you can change any password individually online To configure passwords offline or to update them all together select Administration Setup from the Meter Setup menu The present ...

Страница 128: ...and Revenue Meter To setup a password online 1 From the Monitor menu select Administration Change Password and then click on the password you wish to change 2 Enter the new password and repeat it in the following Confirm new password box 3 Click Send to update the password in the meter ...

Страница 129: ...ly the SELECT ENTER button 2 Adjust the selected item with the SCROLL button 3 Highlight the next item you wish to change and adjust it in the same manner 4 To store your new clock setting press the SELECT ENTER button for more than 1 second If you confirm the clock change from the highlighted seconds window the seconds are zeroed 5 To exit menu press the SELECT ENTER button for more than 1 second...

Страница 130: ...he Device Diagnostics dialog select Device Control from the Monitor menu and then click on the Device Diagnostics tab To clear the device diagnostics events click on Clear Refer to Device Diagnostic Codes in Appendix G for the list of diagnostic codes and their meanings You can also clear the device diagnostics via the Clear Operation Event Counters entry in the Reset dialog see the following sect...

Страница 131: ...try 1 Use the SCROLL button to scroll through the menu entries until a required reset entry appears in the window 2 Press briefly SELECT ENTER button to highlight the Do entry 3 Press and hold the SELECT ENTER button for more than 5 seconds until the Do entry is replaced with Done indicating that the operation is complete 4 Release the button If your security level does not allow access to a menu ...

Страница 132: ...ry has more than one target you are allowed to select targets from the dialog box 2 Check the corresponding boxes and then click OK 3 Confirm your command to send it to the meter Remote Relay Control From PAS you can send a command to any relay in your meter or to release a latched relay except of the relays that are linked to the internal pulse sources Such relays cannot be operated outside of th...

Страница 133: ...atus and whether it is latched by a remote command or locally from the setpoint Operating Event Flags The EM720 has 8 common event flags that are intended for use as temporary event storage and can be tested and operated from the control setpoints You can transfer an event to the setpoint and trigger its operation remotely by changing the event status through PAS To enter the Event Flags dialog se...

Страница 134: ...Chapter 6 Device Control and Upgrading Operating Event Flags 134 EM720 Power Quality and Revenue Meter ...

Страница 135: ...ode It is also recommended to set the serial port baud rate to 115 200 bps See Configuring Communications on how to remotely change the protocol and baud rate in your meter To download a firmware file to your meter 1 Check the On line button on the PAS toolbar select Flash Downloader from the Monitor menu and then confirm changes 2 Point to the firmware upgrade file click Open and then confirm upg...

Страница 136: ... GPRS networks are both restart so communications may be temporarily lost You may need to wait a short duration before PAS restores a connection with your meter 2 If you are connected to the meter via a wireless GPRS network the meter will logout of the network and logon again so the IP address you used for connecting to the meter will no longer be supported You should check the meter for a new GP...

Страница 137: ...2 Select the device site from the list box on the PAS toolbar 3 Point to RT Data Monitor on the Monitor menu and then select a data set you want to view Organizing Data Sets PAS supports 33 programmable data sets with up to 40 data parameters Set 0 is intended for simple meters which have a limited number of parameters and is not recommended for the use with the EM720 To re organize data sets sele...

Страница 138: ...different data sets An open data monitor window is linked to the current site and does not change if you select another site in the site list You can view acquired data in a tabular form or in a graphical form as a data trend The following picture shows a typical data monitor window Polling Options To change the polling options click on the Data Monitor window with the right mouse button and selec...

Страница 139: ...retrieved records exceeds the number of rows in the window the window scrolls up so that older records are erased See Working with Tables in Chapter 9 for more information on working with tables Viewing Data Trend To view a data trend click on the button on the local toolbar To change the time range for your graph click on the button on the local toolbar and then select the desired date and time r...

Страница 140: ...update rate for automatic recording It must be a multiple of the sampling rate that you defined in the Instrument Setup dialog 6 Click Save When you run real time data polling PAS automatically saves retrieved records to a database at the rate you specified The RT Logging On Off button on the toolbar should be checked all the time You can suspend logging by un checking the button and then resume l...

Страница 141: ...m views Viewing Real time Waveforms To retrieve real time waveforms from your meter 1 Check the On line button on the PAS toolbar 2 Select the device site from the list box on the toolbar 3 Select RT Waveform Monitor from the Monitor menu Use the Poll button for a single step poll or the Continuous poll button for continuous polling To stop continuous polling click on the Stop button PAS normally ...

Страница 142: ...defined schedule for example daily weekly or monthly If you do not change the destination database location new data is added to the same database so you can store long term data profiles in one database regardless of the upload schedule you selected Uploading Files on Demand To retrieve the log files from your device 1 Select a device site from the list box on the PAS toolbar 2 Check the On line ...

Страница 143: ...and select the start date for retrieving data 7 If you wish to retrieve data recorded before a known date check the To box and select the last date for retrieving data 8 Click OK Using the Upload Scheduler To setup the Upload Scheduler 1 Select Upload Scheduler from the Logs menu 2 Click Add Site point to the site database for which you want to organize the schedule and then click OK ...

Страница 144: ...availability of your device and the delay between attempts in minutes and seconds 7 If you wish to use the schedule to synchronize the device clock with your PC check the RTC Synchronization Enable box If your device is password protected by a communications password type in the password you set in the device to allow PAS to update the clock 8 Click on the Select Logs button check the boxes for lo...

Страница 145: ...S Upload Scheduler automatically retrieves the EN50160 statistics files on a daily or weekly basis depending on the EN50160 evaluation period selected in your device Select the Daily or Weekly schedule for the EN50160 statistics files when configuring the upload schedule see Using the Upload Scheduler Check the Data log 9 and 10 boxes in the Select Logs dialog box for uploading the EN50160 Complia...

Страница 146: ...ference between reading waveforms on line and viewing waveform files Online waveforms are read one record a time so a multi record waveform series may not be viewed as a single waveform See Chapter 9 Viewing Log Files and Reports for information on using different log views Retrieving Waveforms On line on Events Looking after a specific event in a waveform file may take much time especially with l...

Страница 147: ...ou do not want your files to be compressed uncheck the Compress box before saving the file In COMTRADE format each waveform event is recorded into a separate file A COMTRADE waveform file name contains a site name followed by an ID of the fault or power quality event which triggered the waveform record PQDIF file names contain a site name followed by a timestamp of the first event recorded to the ...

Страница 148: ...ou want to store converted files type in the converted file s name select a desired output file format and then click on Save 6 Repeat the same for all tables you wish to be converted 7 Click OK Exporting Files in Excel Format PAS can automatically convert data files into the Microsoft Excel workbook format while retrieving data from your meters via the Upload Scheduler To store files in Excel for...

Страница 149: ...weekly monthly or yearly schedule When archiving data a new database is created to where older data from your present database with the expired archiving date is moved An archive file keeps the original database name to which the date of the oldest database record is added so you can easily identify your archives and work with them as you work with a regular database To provide a schedule for arch...

Страница 150: ...Select a desired table on the right pane and then click Open or double click on the table name Names of the last 16 files you opened are stored in the File menu so you can select them directly from the menu Saving Data to a File To save data from the open database table to a file 1 Click on the Save button and select a directory where you want your file to be stored 2 Select a database or type the...

Страница 151: ...ht mouse button select Options select the desired units for voltages and currents and then click OK Copying a Table To copy the entire table or its part into the Clipboard or into another application such as Microsoft Excel or Word 1 Click on the data window with the right mouse button and choose Select All or click on the upper left corner of the table where the No label is commonly displayed 2 C...

Страница 152: ...ons click on the Axes tab select the desired units and then click OK Selecting Line Styles and Colors Channel waveforms can be displayed using different colors and line styles To change the colors or line styles click on the graph window with the right mouse button select Options click on the Display tab adjust colors and styles and then click OK Selecting Grid and Frame Colors Click on the graph ...

Страница 153: ...the buttons on your local toolbar to zoom in and zoom out One click gives you a 100 percent horizontal or 50 percent vertical zoom Two buttons representing magnifying glasses give you a proportional zoom in both directions Changing Region Size In overlapped waveforms and in the ITI curve graph you can change the scale of a selected graph region Click on the graph window with the right mouse button...

Страница 154: ...Chapter 9 Viewing Files and Reports Viewing Options 154 EM720 Power Quality and Revenue Meter To print a graph to a printer click on the print button on the toolbar select a printer and click OK ...

Страница 155: ...more information on viewing options Filtering and Sorting Events You can use filtering to find and work with a subset of events that meet the criteria you specify Click on the Filter button or click on the report window with the right mouse button and select Filter Check the causes of events you want to display and then click OK PAS temporary hides rows you do not want displayed To change the defa...

Страница 156: ...or which PAS found related data is blue colored Click on the colored ID to check a list of the event links Click on a list item to move to the related waveform or data log record Retrieving Waveforms Online If you found an event for which you expect a waveform to be recorded in the meter but it has not yet been stored to the database you can retrieve it online Events for which PAS did not find a c...

Страница 157: ...l bar to view the entire log contents See Working with Tables for more information on viewing options Filtering and Sorting Events To filter events click on the Filter button or click on the report window with the right mouse button and select Filter check the categories of events you want to display and then click OK To change the default event sorting order click on the Sort button or click on t...

Страница 158: ...e database you can retrieve it online Events for which PAS did not find a corresponding waveform in the database are still black colored Click on the event ID then click on the Retrieve Waveform prompt and point to a database to which you want the waveform to be stored Viewing the ITI CBEMA Curve Impulsive transients and short duration voltage variations sags and swells can be viewed as magnitude ...

Страница 159: ...les and Reports Viewing the Power Quality Event Log EM720 Power Quality and Revenue Meter 159 See Using a Zoom and Changing Region Size for information on how to change the graph scale to separate closely located elements ...

Страница 160: ... contents See Working with Tables for more information on viewing options Filtering and Sorting Events To filter events click on the Filter button or click on the report window with the right mouse button and select Filter check the categories of events you want to display and then click OK To change the sorting order click on the Sort button or click on the report window with the right mouse butt...

Страница 161: ...links Click on a list item to move to the related waveform or data log records Data log records associated with the fault event are taken into a separate window for easy viewing and trending Retrieving Waveforms Online If you found an event for which you expect a waveform to be recorded in the meter but it has not yet been stored to the database you can retrieve it online Events for which PAS did ...

Страница 162: ...e displayed in a tabular view one data record per row or in a graphical view as a data trend graph Viewing Data Trend To view data in a graphical form click on the Data Trend button on the local toolbar To change the time range for your graph click on the Time Range button on the local toolbar and then select the desired date and time range ...

Страница 163: ...ch waveform window has a local toolbar from where you can open another window to examine the waveforms in a different view When you move to another waveform record all views are updated simultaneously to reflect the changes You can open all five views together to analyze different properties of the waveform like a wave shape waveform disturbance unbalance or spectrum Viewing a Waveform Graph When ...

Страница 164: ...orm Scrolling through the Database The status bar at the bottom shows you how many records the database contains Use green arrowheads on the window toolbar to scroll through records If you wish to find a waveform related to a specific time click on the button on the window toolbar select the time range and click OK Viewing an RMS Plot Click on the button to see a cycle by cycle RMS plot of the vol...

Страница 165: ...on the window with the right mouse button select Channels check the channel you want displayed and then click OK Spectrum components are calculated over four cycles of the waveform from the point where the left marker line is located If more than one view are open PAS gives the priority to the overlapped waveform view The order of the highest displayed harmonic component is equal to the half sampl...

Страница 166: ...Chapter 9 Viewing Files and Reports Viewing Waveforms 166 EM720 Power Quality and Revenue Meter ...

Страница 167: ... and in harmonic tables Harmonics that exceed selected compliance levels are colored in red on the graph and in the tables Viewing a Spectrum Table Click on the button on the local toolbar to display the harmonics spectrum in a tabular view for a selected phase or for all phases together The spectrum table shows voltage current active power and reactive power harmonic components both in percent of...

Страница 168: ...th the right mouse button select Options click on the Phasor tab check the channel you want to make a reference channel and then click OK If you leave the Triangle box checked PAS connects the ends of the voltage and current vectors showing you three phase voltage and current triangles This is useful when analyzing voltage and current unbalances Phasor diagrams are calculated over one waveform cyc...

Страница 169: ...f devices with synchronized clocks you can view waveforms recorded at different locations in one window PAS can synchronize the time axes for different waveforms so they could be displayed in a single plot To get synchronized waveforms 1 Put the databases with waveforms into the same folder or put the sites from which you uploaded data to the same group in the sites tree 2 Open a waveform you want...

Страница 170: ... Viewing Waveforms 170 EM720 Power Quality and Revenue Meter 4 Click on the Channels button and select channels for each site 5 Click OK To change the channels click on the waveform window with the right mouse button and select Channels ...

Страница 171: ...is reported within the selected time range on a daily weekly or yearly basis depending on the observation periods stated in the EN50160 for voltage characteristics If the time range includes a number of the observation intervals each interval s statistics is given in a separate row For power frequency both weekly and yearly compliance statistics are provided For characteristics provided with defin...

Страница 172: ...Power Quality and Revenue Meter Selecting the Time Range To change the time range or contents of the report click on the report with the right mouse button select Options select the required time range check the voltage characteristics to be included in the report and then click OK ...

Страница 173: ...the Reports menu or click on the report window with the right mouse button and then select Report Setup 2 Click on the Change button and select a logo image file Check the Show box to include your logo into a report 3 Type the header text in the Page Header box Check the Enabled box to include the header into a report 4 Click on the Footer tab and type the footer text Check the Enabled box to incl...

Страница 174: ...cs in the same manner as the EN50160 Compliance statistics report Select EN50160 Online Statistics from the Reports menu point to the database where you stored the retrieved online statistics uncheck the voltage characteristics tables that you do not want to be reported and then click Open Viewing the EN50160 Harmonics Survey Report To view the EN50160 harmonics survey report on the collected stat...

Страница 175: ...ed See Fault Indication and Cross Triggering FAULT DETECTED The embedded fault detector has detected a fault EXTERNAL TRIGGER Fault recorder has been triggered via a digital input DEVICE FAULT Device fault See Device Fault Alarm NO VOLTAGE No measured voltage PULSED EVENTS Internal Pulsed Events setpoint triggers only kWh IMP PULSE kWh Import pulse kWh EXP PULSE kWh Export pulse kvarh IMP PULSE kv...

Страница 176: ...nce current unbalance I ZSEQ UNB Zero sequence current unbalance RMS 1 2 cycle 1 2 Cycle Values V1 V1 V12 voltage 1 V2 V2 V23 voltage 1 V3 V3 V31 voltage 1 V12 V12 voltage V23 V23 voltage V31 V31 voltage I1 I1 current I2 I2 current I3 I3 current I4 I4 current In In current V ZERO SEQ Zero sequence voltage 7 I ZERO SEQ Zero sequence current 7 V UNB Voltage unbalance 6 I UNB Current unbalance 6 FREQ...

Страница 177: ...e 1 I LOW Low current kW LOW Low kW 8 kvar LOW Low kvar 8 kVA LOW Low kVA 8 PF LAG LOW Low lagging PF 8 PF LEAD LOW Low leading PF 8 THD LOW Low voltage THD 2 3 V THD LOW Low current THD 3 KF LOW Low K Factor 3 I TDD LOW Low current TDD 3 V L L LOW Low line to line voltage RT HIGH 1 Cycle High Values on any Phase V HIGH High line to neutral line to line voltage 1 I HIGH High current kW HIGH High k...

Страница 178: ...ance 6 AVR PHASE 1 Second Phase Values V1 V1 V12 voltage 1 V2 V2 V23 voltage 1 V3 V3 V31 voltage 1 I1 I1 current I2 I2 current I3 I3 current kW L1 kW L1 kW L2 kW L2 kW L3 kW L3 kvar L1 kvar L1 kvar L2 kvar L2 kvar L3 kvar L3 kVA L1 kVA L1 kVA L2 kVA L2 kVA L3 kVA L3 PF L1 Power factor L1 PF L2 Power factor L2 PF L3 Power factor L3 V1 THD V1 V12 Voltage THD 2 4 V2 THD V2 V23 Voltage THD 2 4 V3 THD ...

Страница 179: ...gh kW kvar HIGH High kvar kVA HIGH High kVA PF LAG HIGH High PF Lag PF LEAD HIGH High PF Lead V THD HIGH High voltage THD 2 4 I THD HIGH High current THD 4 KF HIGH High K Factor 4 I TDD HIGH High current TDD 4 V L L HIGH High line to line voltage AVR TOTAL 1 Second Total Values kW Total kW kvar Total kvar kVA Total kVA PF Total PF PF LAG Total PF lag PF LEAD Total PF lead kW IMP Total kW import kW...

Страница 180: ...equence voltage unbalance I UNB Negative sequence current unbalance FREQ Frequency V PSEQ Positive sequence voltage V ZSEQ UNB Zero sequence voltage unbalance RMS 3 sec 3 Second RMS Values V1 V1 V12 voltage 1 V2 V2 V23 voltage 1 V3 V3 V31 voltage 1 V12 V12 voltage V23 V23 voltage V31 V31 voltage I1 I1 current I2 I2 current I3 I3 current I4 I4 current In In current V ZERO SEQ Zero sequence voltage ...

Страница 181: ...HD I4 THD I4 THD V1 THD I V1 V12 interharmonics THD 2 V2 THD I V2 V23 interharmonics THD 2 V3 THD I V3 V31 interharmonics THD 2 I1 THD I I1 interharmonics THD I2 THD I I2 interharmonics THD I3 THD I I3 interharmonics THD I4 THD I I4 interharmonics THD I1 TDD I1 TDD I2 TDD I2 TDD I3 TDD I3 TDD I4 TDD I4 TDD I1 KF I1 K Factor I2 KF I2 K Factor I3 KF I3 K Factor I4 KF I4 K Factor HRM TOT 3 sec 3 Seco...

Страница 182: ...2 THD I I2 interharmonics THD I3 THD I I3 interharmonics THD I4 THD I I4 interharmonics THD I1 TDD I1 TDD I2 TDD I2 TDD I3 TDD I3 TDD I4 TDD I4 TDD I1 KF I1 K Factor I2 KF I2 K Factor I3 KF I3 K Factor I4 KF I4 K Factor PHASORS Phasors 3 V1 Mag V1 V12 voltage magnitude 2 V2 Mag V2 V23 voltage magnitude 2 V3 Mag V3 V31 voltage magnitude 2 I1 Mag I1 current magnitude I2 Mag I2 current magnitude I3 M...

Страница 183: ...mand kvar EXP SD kvar export sliding window demand kW EXP ACD kW export accumulated demand kvar EXP ACD kvar export accumulated demand kW EXP PRD kW export predicted sliding window demand kvar EXP PRD kvar export predicted sliding window demand I4 DMD I4 Ampere demand HRM DMD Present Harmonic Demands V1 THD DMD V1 V12 THD demand 2 V2 THD DMD V2 V23 THD demand 2 V3 THD DMD V3 V31 THD demand 2 I1 TH...

Страница 184: ...er 2 SUM REG10 Summary energy register 10 HD V1 V1 V12 Harmonic Distortions 2 3 V1 HD01 H01 Harmonic distortion V1 HD02 H02 Harmonic distortion V1 HD50 H50 Harmonic distortion HD V2 V2 V23 Harmonic Distortions 2 3 V2 HD01 H01 Harmonic distortion V2 HD02 H02 Harmonic distortion V2 HD50 H50 Harmonic distortion HD V3 V3 V31 Harmonic Distortions 2 3 V3 HD01 H01 Harmonic distortion V3 HD02 H02 Harmonic...

Страница 185: ...gle V3 H02 ANG H02 Harmonic angle V3 H50 ANG H50 Harmonic angle ANG I1 I1 Harmonic Angles 3 I1 H01 ANG H01 Harmonic angle I1 H02 ANG H02 Harmonic angle I1 H50 ANG H50 Harmonic angle ANG I2 I2 Harmonic Angles 3 I2 H01 ANG H01 Harmonic angle I2 H02 ANG H02 Harmonic angle I2 H50 ANG H50 Harmonic angle ANG I3 I3 Harmonic Angles 3 I3 H01 ANG H01 Harmonic angle I3 H02 ANG H02 Harmonic angle I3 H50 ANG H...

Страница 186: ...t term 10 min flicker severity 2 V1 Plt V1 V12 long term 2 hours flicker severity 2 V2 Plt V2 V23 long term 2 hours flicker severity 2 V3 Plt V3 V31 long term 2 hours flicker severity 2 MIN PHASE Minimum 1 Cycle Phase Values V1 MIN V1 V12 voltage 1 V2 MIN V2 V23 voltage 1 V3 MIN V3 V31 voltage 1 I1 MIN I1 current I2 MIN I2 current I3 MIN I3 current kW L1 MIN kW L1 8 kW L2 MIN kW L2 8 kW L3 MIN kW ...

Страница 187: ... MIN Voltage unbalance 6 I UNB MIN Current unbalance 6 MAX PHASE Maximum 1 Cycle Phase Values V1 MAX V1 V12 voltage 1 V2 MAX V2 V23 voltage 1 V3 MAX V3 V31 voltage 1 I1 MAX I1 current I2 MAX I2 current I3 MAX I3 current kW L1 MAX kW L1 8 kW L2 MAX kW L2 8 kW L3 MAX kW L3 8 kvar L1 MAX kvar L1 8 kvar L2 MAX kvar L2 8 kvar L3 MAX kvar L3 8 kVA L1 MAX kVA L1 8 kVA L2 MAX kVA L2 8 kVA L3 MAX kVA L3 8 ...

Страница 188: ... demand I3 DMD MAX I3 maximum ampere demand kW IMP SD MAX Maximum kW import sliding demand kvar IMP SD MAX Maximum kvar import sliding demand kVA SD MAX Maximum kVA sliding demand kvar IMP SD MAX Maximum kW export sliding demand kvar EXP SD MAX Maximum kvar export sliding demand I4 DMD MAX I4 maximum ampere demand MAX HRM DMD Maximum Harmonic Demands V1 THD DMD MAX V1 V12 THD demand 2 V2 THD DMD M...

Страница 189: ... Tariff 2 register REG3 TRF8 Tariff 8 register TOU REG4 Billing TOU Energy Register 4 REG4 TRF1 Tariff 1 register REG4 TRF2 Tariff 2 register REG4 TRF8 Tariff 8 register TOU REG5 Billing TOU Energy Register 5 REG5 TRF1 Tariff 1 register REG5 TRF2 Tariff 2 register REG5 TRF8 Tariff 8 register TOU REG6 Billing TOU Energy Register 6 REG6 TRF1 Tariff 1 register REG6 TRF2 Tariff 2 register REG6 TRF8 Ta...

Страница 190: ...e maximum demand REG2 TRF8 CMD Tariff 8 cumulative maximum demand TOU MAX DMD REG3 Billing TOU Maximum Demand Register 3 REG3 TRF1 MD Tariff 1 maximum demand REG3 TRF2 MD Tariff 2 maximum demand REG3 TRF8 MD Tariff 8 maximum demand REG3 TRF1 CMD Tariff 1 cumulative maximum demand REG3 TRF2 CMD Tariff 2 cumulative maximum demand REG3 TRF8 CMD Tariff 8 cumulative maximum demand TOU MAX DMD REG4 Bill...

Страница 191: ...ximum demand REG8 TRF1 CMD Tariff 1 cumulative maximum demand REG8 TRF2 CMD Tariff 2 cumulative maximum demand REG8 TRF8 CMD Tariff 8 cumulative maximum demand TOU MAX DMD REG9 Billing TOU Maximum Demand Register 9 REG9 TRF1 MD Tariff 1 maximum demand REG9 TRF2 MD Tariff 2 maximum demand REG9 TRF8 MD Tariff 8 maximum demand REG9 TRF1 CMD Tariff 1 cumulative maximum demand REG9 TRF2 CMD Tariff 2 cu...

Страница 192: ... simplified technique as a relation of the maximum deviation of phase values from a 3 phase average value to a 3 phase average 7 The value is calculated using a simplified technique as a one third of the RMS value of a 3 phase vector sum 8 Not affected by loss compensation always indicate readings at the metering point NOTE Designations of some enginering demands and billing energy and demand regi...

Страница 193: ... SW DMD Billing summary total register sliding demand REG1 SUM REG1 Billing summary total energy register REG1 MD SUM REG1 DMD MAX Billing summary total register maximum demand REG1 TRF1 TOU REG1 TRF1 Billing tariff energy register REG1 TRF1 MD DMD1 TRF1 MAX Billing tariff register maximum demand TRF1 SEASON TRF1 Generic billing tariff energy register TRF1 MD SEASON TRF1 Generic billing tariff reg...

Страница 194: ...ter 1 8 RESET ALL COUNTERS Clear all counters RESET DEMANDS ALL Reset all engineering maximum demands RESET DEMANDS POWER Reset engineering maximum power demands RESET DEMANDS VOLT AMP Reset maximum volts and ampere demand RESET DEMANDS VOLT Reset maximum volt demand registers RESET DEMANDS AMP Reset maximum ampere demand registers RESET DEMANDS HRM Reset maximum harmonic demand registers RESET TO...

Страница 195: ...G9 Summary total energy register 9 reading 10 REG10 Summary total energy register 10 reading The number of parameters in a record is automatically configured depending on the number of billing registers for which you selected a source input in the Billing TOU Register setup Montly Billing Profile Billing Period Data Log Data Log 15 Field No Designation Description Energy Register 1 1 REG1 Summary ...

Страница 196: ...x demand 23 TIME7 Tariff 7 max demand timestamp 24 TRF7 CMD Tariff 7 cumulative max demand 25 TRF8 MD Tariff 8 max demand 26 TIME8 Tariff 8 max demand timestamp 27 TRF8 CMD Tariff 8 cumulative max demand Monthly Maximum Demand Register 10 1 REG10 MD Summary total max demand 2 TIME0 Summary total max demand timestamp 3 REG10 CMD Summary total cumulative max demand 4 TRF1 MD Tariff 1 max demand 5 TI...

Страница 197: ... reading Energy Register 10 1 REG10 Summary total energy reading 2 TRF1 Tariff 1 energy reading 3 TRF2 Tariff 2 energy reading 4 TRF3 Tariff 3 energy reading 5 TRF4 Tariff 4 energy reading 6 TRF5 Tariff 5 energy reading 7 TRF6 Tariff 6 energy reading 8 TRF7 Tariff 7 energy reading 9 TRF8 Tariff 8 energy reading Daily Maximum Demand Register 1 1 REG1 MD Summary total max demand reading 2 TRF1 MD Ta...

Страница 198: ...d Revenue Meter Field No Designation Description 8 TRF7 MD Tariff 7 max demand reading 9 TRF8 MD Tariff 8 max demand reading The number of parameters in each section is automatically configured depending on the number of actual tariffs you defined in the TOU Daily Profiles ...

Страница 199: ...r of polyphase incidents 10 15 N2 5 N1 N EN50160 compliance ratio N1 N 6 N2 N EN50160 compliance ratio N2 N 7 V1 N1 Number of incidents 10 on phase V1 8 V1 Min Minimum voltage on phase V1 9 V1 Max Maximum voltage on phase V1 10 V2 N1 Number of incidents 10 on phase V2 11 V2 Min Minimum voltage on phase V2 12 V2 Max Maximum voltage on phase V2 13 V3 N1 Number of incidents 10 on phase V3 14 V3 Min M...

Страница 200: ... N13 70 20s Number of polyphase incidents u 70 t 20s 20 N14 40 20s Number of polyphase incidents u 40 t 20s 21 N11 90 60s Number of polyphase incidents u 90 t 60s 22 N12 85 60s Number of polyphase incidents u 85 t 60s 23 N13 70 60s Number of polyphase incidents u 70 t 60s 24 N14 40 60s Number of polyphase incidents u 40 t 60s 25 N11 90 180s Number of polyphase incidents u 90 t 180s 26 N12 85 180s ...

Страница 201: ...s u 300 6 V1 N1 120 Number of incidents u 120 on phase V1 7 V1 N2 150 Number of incidents u 150 on phase V1 8 V1 N3 200 Number of incidents u 200 on phase V1 9 V1 N4 250 Number of incidents u 250 on phase V1 10 V1 N5 300 Number of incidents u 300 on phase V1 11 V2 N1 110 Number of incidents u 120 on phase V2 12 V2 N2 150 Number of incidents u 150 on phase V2 13 V2 N3 200 Number of incidents u 200 ...

Страница 202: ... compliance ratio N1 N 6 N2 N EN50160 voltage THD compliance ratio N2 N 7 V1 N1 Number of harmonic voltage incidents on phase V1 8 V1 N2 Number of voltage THD incidents on phase V1 9 V1 HD Max Worst case harmonic magnitude on phase V1 Un 10 V1 H Worst case harmonic component number on phase V1 11 V1 THD Max Worst case voltage THD on phase V1 12 V2 N1 Number of harmonic voltage incidents on phase V...

Страница 203: ... phase V1 Un 8 V1 Frq3 Un Maximum 3rd signaling voltage magnitude on phase V1 Un 9 V1 Frq4 Un Maximum 4th signaling voltage magnitude on phase V1 Un 10 V2 N1 Number of incidents on phase V2 11 V2 Frq1 Un Maximum 1st signaling voltage magnitude on phase V2 Un 12 V2 Frq2 Un Maximum 2nd signaling voltage magnitude on phase V2 Un 13 V2 Frq3 Un Maximum 3rd signaling voltage magnitude on phase V2 Un 14 ...

Страница 204: ...MAX Maximum H03 harmonic voltage magnitude Un 52 HD50 MAX Maximum H50 harmonic voltage magnitude Un V3 Harmonic Voltage 1 THD MAX Maximum THD 2 THDO MAX Maximum odd harmonics THD 3 THDE MAX Maximum even harmonics THD 4 HD02 MAX Maximum H02 harmonic voltage magnitude Un 5 HD03 MAX Maximum H03 harmonic voltage magnitude Un 52 HD50 MAX Maximum H50 harmonic voltage magnitude Un ...

Страница 205: ...e voltage characteristics the standard provides definite limits that can be complied with for most of the time considering the possibility of relatively rare excursions beyond these limits Limits are set with a view to compliance for a percentage of the observation time e g 95 of the observations in any period of one week The following table gives the characteristics for which definite limits have...

Страница 206: ... 61000 4 15 2003 Electromagnetic compatibility EMC Part 4 Testing and measurement techniques Section 15 Flickermeter Functional and design specifications IEC 61000 4 30 2003 Electromagnetic compatibility EMC Part 4 30 Testing and measurement techniques Power quality measurement methods Eurelectric Union of the Electricity Industry publications Application guide to the European Standard EN 50160 on...

Страница 207: ...evaluation periods used for collecting data Whenever needed PAS will aggregate records within a number of the evaluation intervals to provide correct observation periods Some of the characteristics like rapid voltage changes or mains signaling voltage may require daily assessments If you intend to use daily evaluated voltage characteristics select the daily evaluation period via the EN50160 Advanc...

Страница 208: ...oltage between two intervals selected from three 1 second consecutive intervals and compares it with the target compliance limit A rapid voltage change is not classified if it crosses a voltage tolerance limit 10 Un as it would be considered a voltage dip or a temporary overvoltage Target Values The maximum rate of rapid voltage changes in normally once per hour or less For voltage variations repe...

Страница 209: ...age Dips A voltage dip is a sudden reduction of the RMS voltage below 90 of the nominal value followed by a return to a value higher than 90 of the nominal in a time varying from 10 ms to 60 s Method of Evaluation A voltage dip is classified as one polyphase event regardless of the shape and of the number of phases affected as per Eurelectric s Application guide to the European Standard EN 50160 a...

Страница 210: ...ng the classification recommended by Eurelectric s Measurement guide for voltage characteristics Interruptions are classified by duration as shown in Appendix D Indicative Values Under normal operating conditions the expected number of short voltage interruptions in a year may be from up to a few tens to up to several hundreds Short interruptions generally last less than a few seconds The annual f...

Страница 211: ...nd duration from 20 us with the Fast Transient coprocessor option or from 75 us without it and to cycle The impulse magnitude is evaluated either by the peak voltage value or by the impulse amplitude and is referenced to the nominal voltage amplitude 1 414 Un The meter can detect transient overvoltages with a magnitude of up to 2 kV with the fast transient coprocessor option or up to 700V without ...

Страница 212: ... 25 since the EN50160 provides target values for individual harmonic voltages only for orders up to 25 The highest harmonic order for evaluating individual harmonic voltages and THD can be changed in the meter in the range of 25 to 50 via the EN50160 Advanced Setup Harmonic voltages are not evaluated if the supply voltage crosses a voltage tolerance limit 15 Un Target Values The ranges of harmonic...

Страница 213: ... Relative Voltage 2 0 2 3 15 1 0 16 25 0 5 You can change the compliance limit for the interharmonic THD via the EN50160 PQ Recorder setup The individual interharmonic voltage limits can be changed via the EN50160 Harmonics setup Mains Signaling Voltage This characteristic defines the magnitude of the signal voltages used in some countries for signal transmission over public supply networks These ...

Страница 214: ...tolerance limit 15 Un Target Values The voltage levels given by the EN50160 in Figure 1 of Clause 2 13 are taken from the so called Meister curve which defines the maximum permissible ripple control voltages in LV networks Compliance with the EN50160 requires that the 3 second mean of signal voltages shall be less or equal to the specified limits for 99 of a day ...

Страница 215: ...les in your meter The following table shows the meter data scales Scale Range Maximum voltage V max Voltage scale PT Ratio V 1 Maximum current I max Current scale CT Ratio A 2 3 Maximum Power P max 4 V max I max 2 W Maximum frequency 100 Hz 1 The default voltage scale is 144V 120V 20 2 CT Ratio CT primary current CT secondary current 3 The default current scale is 2 CT secondary 2 0A with 1A secon...

Страница 216: ...rupted 13 Low battery Battery low Low lithium battery With auto reset Battery check or replacement is required 14 Exp memory fault Expanded memory fault Hardware failure 15 CPU EEPROM fault CPU EEPROM fault Hardware failure 18 Coprocessor fault Coprocessor fault Hardware failure 20 Library error C Library error Hardware failure 22 Task error Task error Hardware failure 24 IRIG B No signal IRIG B s...

Страница 217: ...evious last period 2 for the second previous billing period and so on The following table lists the OBIS codes used in the EM720 billing data displays OBIS Code Unit Description 0 1 0 Billing period counter 0 1 2 F Timestamp of the billing period 0 8 6 F Day Billing period duration 1 8 0 kWh kWh import Q1 Q4 total 1 8 1 1 8 8 kWh kWh import Q1 Q4 tariff 1 8 2 8 0 kWh kWh export Q2 Q3 total 2 8 1 2...

Страница 218: ...export maximum demand tariff 1 8 1 2 0 kW MW kW import cumulative maximum demand total 1 2 1 1 2 8 kW MW kW import cumulative maximum demand tariff 1 8 2 2 0 kW MW kW export cumulative maximum demand total 2 2 1 2 2 8 kW MW kW export cumulative maximum demand tariff 1 8 3 2 0 kvar Mvar kvar import cumulative maximum demand total 3 2 1 3 2 8 kvar Mvar kvar import cumulative maximum demand tariff 1 ...

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