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Power Quality

PEM735_D00084_00_M_XXEN/02.2015

7.2 Flicker

Flicker can be caused by short-term operating voltage fluctuations. Every occurrence of
flicker is recorded for each phase and represented in tabular form on the display.
For detailed description refer to the standard DIN EN 61000-4-15.

Fig. 7.3: Display "Flicker"

Summary of Contents for B 9310 0735

Page 1: ...Manual EN PEM735 Universal measuring device 100 690 V 50 Hz Software version 2 00 xx PEM735_D00084_00_M_XXEN 02 2015 B 9310 0735...

Page 2: ...ostfach 1161 35301 Gruenberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E Mail info bender de www bender de Bender GmbH Co KG All rights reserved Reprinting only with permission of the publisher Su...

Page 3: ...eral safety instructions 11 3 Device description 13 3 1 Area of application 13 3 2 Device features 13 3 3 Versions 15 3 4 Application example 16 3 5 Description of function 17 4 Installation and conne...

Page 4: ...ing 29 5 1 Check proper connection 29 5 2 Before switching on 29 5 3 Switching on 29 5 4 System 29 6 Operation 31 6 1 Getting to know the operating elements 31 6 2 LED indication Energy pulsing 32 6 3...

Page 5: ...7 12 Metering 81 13 Power Energy 85 14 System 87 15 Events 89 16 Settings 91 16 1 Info 92 16 2 Basic 92 16 2 1 Ethernet 94 16 2 2 COM communication interface 96 16 2 3 Advanced advanced settings 97 16...

Page 6: ......

Page 7: ...in the drafting of this operating manual it may nev ertheless contain errors and mistakes Bender cannot accept any liability for injury to persons or damage to property resulting from errors or mistak...

Page 8: ...er products Hardware and software update for Bender devices Delivery of replacement devices for faulty or incorrectly delivered Bender devices Extended warranty for Bender devices with in house repair...

Page 9: ...eminars 1 4 Delivery conditions guarantee warranty and liability The conditions of sale and delivery set out by Bender apply For software products the Softwareklausel zur berlassung von Standard Softw...

Page 10: ...Making effective use of this document 10 PEM735_D00084_00_M_XXEN 02 2015...

Page 11: ...Only electrically skilled persons are authorised to install and commission this device Electrically skilled persons are those who have the relevant education knowledge and experience as well as knowl...

Page 12: ...signs must always be clearly legible Replace damaged or illegible signs immediately If the device is overloaded by overvoltage or a short circuit current load it must be checked and replaced if necess...

Page 13: ...uality and energy management is characterised by the following features Class A power analyser certified according to DIN EN 61000 4 30 Monitoring the power quality in accordance with DIN EN 50160 Acc...

Page 14: ...g operations Communication Galvanically isolated RS 485 interface 1 200 to 19 200 bit s Modbus RTU protocol Modbus TCP 10 100 Mbit s Measurements at a glance Measuring quantities Phase voltages UL1 UL...

Page 15: ...P Q S and Fundamental component for active and reactive energy import and export Total harmonics for active energy Individual harmonics 2 31 for active energy import Report in accordance with EN 50160...

Page 16: ...ig 3 1 Application example Modbus TCP Ethernet BMS 1 12 Modbus RTU Fileserver L PEN PE L N PE U I Modbus TCP Modbus RTU PAS PEM7xx U I NSHV UV1 1 12 RCMS UV2 U I U I U I RCMS Modbus TCP Modbus RTU Mod...

Page 17: ...11 The current inputs are connected via external 1 A or 5 A measuring current trans formers The large displayof the panel mountingdevice makes the relevant measured quantities easily legible and enab...

Page 18: ...Device description 18 PEM735_D00084_00_M_XXEN 02 2015...

Page 19: ...nly electrically skilled persons are allowed to connect and commission the device Such persons must have read this manual and understood all instructions relating to safety 4 3 Installing the device 4...

Page 20: ...ront panel mounting A front panel cutout of 138 mm x 138 mm is required for the device 1 Loosen the screws of the fixing brackets 2 Slide the fixing brackets along the grooves provided in the enclosur...

Page 21: ...2011 07 9 6 1 Over current protection A suitable separator must be provided For details refer to the operating manuals of the measuring current transformers currently used 4 4 3 Measuring current tra...

Page 22: ...the bus con nection of all devices is 1200 m 4 6 Wiring diagram Connect the device according the wiring diagram The connections are located on the back of the device Fig 4 4 Wiring diagram l41 l31 l11...

Page 23: ...4 wire system e g TN S system 4 7 2 Three phase 3 wire system The universal measuring device PEM735 can be used in three phase 3 wire systems 1 Connection to the system to be monitored 2 Measuring vol...

Page 24: ...transformers The coupling of the voltage transformers allows the use of the measuring device in me dium and high voltage systems The transformation ratio can be adjusted in the PEM735 1 1 000 000 When...

Page 25: ...igital inputs The universal measuring device PEM735 provides 8 digital inputs The inputs are sup plied by a galvanically isolated DC 24 V voltage An external circuit providing at least a current of Im...

Page 26: ...4 9 Digital outputs DO1 2 The universal measuring device PEM735 features two configurable outputs N O con tacts Solid State Relay Tab 4 1 Digital outputs Fig 4 10 Digital outputs internal connection...

Page 27: ...lay outputs Tab 4 2 Relay outputs 4 11 Modbus TCP connector pin assignment Tab 4 3 Modbus TCP connector pin assignment Rated operational voltage 250 V AC DC Rated operational current 3 A RJ45 Pin assi...

Page 28: ...Installation and connection 28 PEM735_D00084_00_M_XXEN 02 2015...

Page 29: ...ching on To switch the device on follow the steps below 1 Connect the supply voltage 2 Set the bus address IP address 3 Set the CT transformer ratio for each channel 4 Change the measuring current tra...

Page 30: ...00084_00_M_XXEN 02 2015 Help and examples of system integration can be found on the Bender homepage www bender de or you can contact our Bender Service for personal advice see chapter 1 2 Technical su...

Page 31: ...tion 1 LED kWh Pulse output see LED indication Energy pulsing on page 32 2 LED kvarh 3 LC display 4 Back Submenu scroll move left on display 5 Main menu move upwards in the menu increase number select...

Page 32: ...easured by the measuring device In order to relate the flashing frequency to the amount of energy the transformation ratios and the pulse constant have to be considered 8 ENTER but ton ok switch to th...

Page 33: ...nu Current Power Quality Voltage Waveform Harmonics Phasor Diagram Flicker EN50160 U Sum I Sum L1 L2 L3 U1 U2 U3 U4 I1 I2 I3 I4 ULn ULL I1 I2 I3 I4 Iavg ENTER Ger tetaster 0 2 4 6 8 10 Main Menu Power...

Page 34: ...Operation 34 PEM735_D00084_00_M_XXEN 02 2015...

Page 35: ...illus trations can be displayed Fig 7 1 Display Power Quality default display screen In addition to the phasor diagram an overview of the flicker events and the starting point for the report accordin...

Page 36: ...t green and dark green red and orange In this way the phase angles be tween the sinusoidal curves caneasilybe assigned The currentsaredepicted within the inner circle while the voltages are shown with...

Page 37: ...r Flicker can be caused by short term operating voltage fluctuations Every occurrence of flicker is recorded for each phase and represented in tabular form on the display For detailed description refe...

Page 38: ...voltages ripple control signals Voltage interruptions 1 Voltage dips 1 Voltage swells 1 Transient overvoltages 1 Note 1 These values are recorded and when applicable subdivided into classes But the DI...

Page 39: ...ent values you have to switch between the different display representations using the arrow buttons The start page of the DIN EN 50160 report provides an overview of the measurements and the errors oc...

Page 40: ...isplay text Description Note Timestamp Observation period for the report Measured values comply with the specified threshold values Measured values do not comply with the specified threshold values De...

Page 41: ...erview Fig 7 5 Power Frequency selection of the parameters fn 50 Hz fn 1 during min 99 5 of a year 49 5 50 5 Hz fn 6 4 for all measured values of a year 47 52 Hz Basic value Mean value Integration int...

Page 42: ...ble deviation for 99 5 of the measured values narrow limits Right column max 6 4 for all measured values wide limits Tolerance Number of the measured values which must be in the tolerance band within...

Page 43: ...values of a year must be in the interval of 195 5 253 0 V wide limits To consider the voltage level 10 minute mean r m s values of the voltage are applied Measurement overview Nominal voltage Un 230 V...

Page 44: ...Power Quality 44 PEM735_D00084_00_M_XXEN 02 2015 Fig 7 7 Supply voltage variations selection of the parameters Fig 7 8 Supply voltage variations subpage...

Page 45: ...or swells are met the occurring events are often considered as voltage dips or swells rather than rapid voltage changes Display text Description Note Limit Permissible deviations from the nominal volt...

Page 46: ...nges subpage The display shows Un 230 V Rapid voltage changes 5 10 Basic value r m s value Integration interval 10 ms Observation period 1 day Display text Description U1 3 counts Counts the number of...

Page 47: ...tibility unit short term Pst measured over a period of 10 minutes Long term flicker severity perceptibility unit long term Plt calculated from a sequence of 12 Pst values two hour interval according t...

Page 48: ...Power Quality 48 PEM735_D00084_00_M_XXEN 02 2015 Fig 7 10 Flicker severity selection of the parameters Fig 7 11 Flicker severity subpage1...

Page 49: ...olerance band within one measurement period 1 U1 3 P95 value Measured flicker value of the 95th percentile P95 during an observation period U1 3 Actual Number of measured values within the tolerance b...

Page 50: ...e supply voltage must be within the range of 0 2 of the positive phase sequence component fundamental In some areas with partly single phase or two phase connected network users installa tions unbalan...

Page 51: ...lance Voltage unbalance ratios of the negative to the positive phase sequence component 2 in special cases 3 Percentage 95 of the measured values in the meas urement period Basic value r m s value Int...

Page 52: ...e deviations from the nominal supply voltage unbal ance tolerance band Tolerance Number of the measured val ues which must be in the toler ance band within one measurement period Unbalance u2 P95 Valu...

Page 53: ...order 40 must be 8 Overview of the limits for individual harmonics Tab 7 1 Limits for individual harmonics Note table 7 1 The 3n harmonics are highlighted They contribute significantly to the unwante...

Page 54: ...ltage subpage 1 Total harmonic distortion THD including harmonics up to the order 40 max 8 Percentage 95 of the measured values must be smaller than or equal to the limit Basic value r m s value Integ...

Page 55: ...e Measured value of the 95th percentile P95 during an observation period U1 3 Actual Number of measured values within the tolerance band of one measurement period Result Specifications complied with P...

Page 56: ...terharmonic voltages at closely adjacent frequencies can appear at the same time forming a wide band spectrum The level of interharmonics is increasing due to the de velopment of frequency converters...

Page 57: ...oidal voltage signals in the frequency range 110 3 000 Hz Mains marking signals Superimposed short time alterations transients at selected points of the voltage waveform Display text Description Note...

Page 58: ...d by the network operators for the transmission of signals For 99 of a day the 3 s mean value of the signal voltages must be less or equal to the values given in Fig 7 17 PEM735 can detect the voltage...

Page 59: ...Power Quality 59 PEM735_D00084_00_M_XXEN 02 2015 Fig 7 18 Mains signaling subpage 1 Fig 7 19 Mains signaling subpage 2...

Page 60: ...ber of the measured values which must be in the tolerance band within one measurement period U1 3 P95 Value V Measured value of the 95th percentile P95 during an observation period U1 3 Actual Latest...

Page 61: ...ell start threshold is equal to 110 of Un the hysteresis is 2 In addition to the threshold the duration of the voltage swell is also determined Voltage swells can trigger up to two of the following Re...

Page 62: ...ominal supply voltage Un is used as reference The volt age dip start threshold is equal to 90 of the Un the hysteresis is 2 The ratio as a percentage between the residual voltage Ures and the nominal...

Page 63: ...s u are summarized as follows 90 u 80 80 u 70 70 u 40 40 u 5 5 u The display shows Display text Description Residual Volt age U res Residual voltage level Ures t Duration of the voltage dip ms Un Nomi...

Page 64: ...lace and from time to time For the time being it is not possible to give fully representative statistical results of measurements of interruption frequency covering the whole of Eu ropean networks The...

Page 65: ...rruption threshold should not be set be low the uncertainty of the residual voltage Ures measurement plus the value of the hys teresis Typically the hysteresis is 2 of Us Udin The voltage interruption...

Page 66: ...The display shows When the transient measurement is activated transients can trigger the following ac tions Switching of outputs digital outputs DO1 2 relay outputs RO1 4 Starting waveform recorders W...

Page 67: ...ltage due to lightning generally has a higher amplitude but lower energy content than an overvoltage caused by switching because of the generally longer duration of such switching overvoltages Note 3...

Page 68: ...Power Quality 68 PEM735_D00084_00_M_XXEN 02 2015...

Page 69: ...asured ULL or ULn as well as the average voltage U Uavg from U1 U3 as a bar graph Fig 8 1 Display Voltage voltage measurement Use the and buttons to switch between the individual displays To reset the...

Page 70: ...Voltage 70 PEM735_D00084_00_M_XXEN 02 2015...

Page 71: ...easured and calculated currents I0 4 as well as the average current I Iavg as a bar graph Fig 9 1 Display Current current measurement Use the and buttons navigate between the displays IL and I0 I4 Tor...

Page 72: ...Current 72 PEM735_D00084_00_M_XXEN 02 2015...

Page 73: ...eric values the waveform recorder represents the waveforms of the measured voltages and currents on the display Here a comprehensive view of all voltages UL1 3 and currents I1 3 and the consideration...

Page 74: ...Waveform 74 PEM735_D00084_00_M_XXEN 02 2015 Use the ENTER button to enable full screen display Fig 10 2 Display Waveform full screen display Fig 10 3 Display Waveform frozen...

Page 75: ...o that you can analyse the graphs in more detail By pressing the Enter button once more the display will unfreeze and return to the full screen display mode Leave the frozen display mode and return di...

Page 76: ...Waveform 76 PEM735_D00084_00_M_XXEN 02 2015...

Page 77: ...istortion This setting can be car ried out directly on the device Settings Advanced HD Calculation Uk UFUND Fundamental THD calculation of an individual harmonic related to the fundamental U1 or I1 of...

Page 78: ...Harmonics 78 PEM735_D00084_00_M_XXEN 02 2015 Fig 11 1 Display Harmonics voltages of one phase Fig 11 2 Display Harmonics currents of one phase...

Page 79: ...istortion When RMS is selected the harmonics are displayed as r m s values V or A When Distortion is selected the harmonics are indicatedasa percentage based on the set HD calculation that means as a...

Page 80: ...Harmonics 80 PEM735_D00084_00_M_XXEN 02 2015...

Page 81: ...3 Actual min max only shows r m s voltages UL1L2 L3L1 Actual min max F Actual U4 Actual I I1 3 Actual min max only shows r m s current I4 Actual min max I0 Actual min max RMS UL1 3 Actual shows a comb...

Page 82: ...Metering 82 PEM735_D00084_00_M_XXEN 02 2015 Fig 12 1 Display Metering voltages Fig 12 2 Display Metering currents...

Page 83: ...Metering 83 PEM735_D00084_00_M_XXEN 02 2015 Fig 12 3 Display Metering r m s values Fig 12 4 Display Metering fundamentals...

Page 84: ...Metering 84 PEM735_D00084_00_M_XXEN 02 2015...

Page 85: ...ation of the active and reactive power as measured values and as vectors in the quadrants Q1 4 The power values are displayed either as total measurement Sum or for each individual conductor L1 3 Fig...

Page 86: ...r import Reactive power export Quadrant 1 Power factor Active power export Reactive power import Quadrant 2 Power factor Active power export Reactive power import IEEE Reactive power import Active pow...

Page 87: ...s can be read from the LC display or the connected system components Ex ternal status changes are stored as events in the SOE log with a resolution of 1 ms One of the digital inputs can be programmed...

Page 88: ...System 88 PEM735_D00084_00_M_XXEN 02 2015...

Page 89: ...stamp an event description in clear text format and the associat ed value are displayed Fig 15 1 Display Events event log start page Press ENTER to go back a menu level You can use the and buttons to...

Page 90: ...Events 90 PEM735_D00084_00_M_XXEN 02 2015 Fig 15 2 Display Events event log page 1 of 3 Fig 15 3 Display Events PQ log...

Page 91: ...ice can be set here password protected Fig 16 1 Display Settings Press ENTER to go to the Settings menu Usethe and buttonstonavigate betweentheindividual items For changing parameters press the Enter...

Page 92: ...92 PEM735_D00084_00_M_XXEN 02 2015 16 1 Info Fig 16 2 Settings Info view You cannot carry out settings in the Info view This page is only for information purpos es 16 2 Basic Fig 16 3 Settings menu it...

Page 93: ...you have to enter the correct password factory setting 000000 Fig 16 4 Settings password entry You can change the value of a digit using the and buttons Use the and buttons to navigate between the ind...

Page 94: ...mp from one field to another using the arrow buttons To change the settings you have to enter the currently selected field highlighted in black using the Enter button where you can adjust the values a...

Page 95: ...he arrow buttons Activate the field with the Enter key The field that can be edited is marked and can be set using the arrow buttons You can change the value of a digit using the and buttons Use the a...

Page 96: ...N 02 2015 Fig 16 7 Display Settings Ethernet change settings 16 2 2 COM communication interface PEM735 features two communication interfaces the settings of which can be carried out directly at the de...

Page 97: ...etermine the calculation method for the power factor and apparent power S and the calculation settings for the harmonics Fig 16 9 Display Settings Advanced Display text Description Protocol COM1 Timin...

Page 98: ...Value of the harmonic related to the fundamental or the r m s value of all values fundamental and fundamental of FUND of RMS Harmonicscalc type Group or Sub_Group Current Kth Harmonic Calc Display of...

Page 99: ...import Reactive power export Quadrant 1 Power factor Active power export Reactive power import Quadrant 2 Power factor Active power export Reactive power import IEEE Reactive power import Active powe...

Page 100: ...d date Fig 16 11 Display Settings time The display shows Note The clock is automatically set by a connected CP700 Display text Description Note Time Local time Relate to GMT Time zone Time zone Relati...

Page 101: ...ttings Others The display shows Note In the case of LCD timeout 0 min the background lighting remains permanently lit max 24 h Display text Description Note LCD Timeout To set the time after which the...

Page 102: ...Settings 102 PEM735_D00084_00_M_XXEN 02 2015...

Page 103: ...range of US DC 44 440 Hz Power consumption 14 VA Measuring circuit Measuring voltage inputs UL1 N L2 N L3 N 400 V UL1 L2 L2 L3 L3 L1 690 V Measuring range 10 120 UN CT transformation ratio Primary 1...

Page 104: ...terface Interface protocol 2 x RS 485 Modbus RTU Baud rate 1 2 19 2 kbits s Cable length 0 1200 m Cable shielded shield connected to SH terminal on one side recommendedJ Y St Ymin 2x0 8 Interface Ethe...

Page 105: ...IEC 61000 4 30 DIN EN 61557 12 VDE 0413 12 ElektrischeSicherheitinNiederspannungsnetzenbisAC 1000 VundDC 1500 V Ger te zum Pr fen Messen oder berwachen von Schutzma nahmen Teil 12 Kombinierte ger te z...

Page 106: ...Technical data 106 PEM735_D00084_00_M_XXEN 02 2015...

Page 107: ...t Flagged data Flagged measured values Measurement results measured or aggre gated which were flagged to indicate that the results may be influ enced by interruptions voltage swells or voltage dips Fu...

Page 108: ...are root of the arithmetic mean of the squares of the instantaneous values of a quantity taken over a speci fied time interval and a specified bandwidth Ripple con trol signal Mains signaling voltages...

Page 109: ...onent ratio expressed as a percentage u0 U0 U1 x 100 U0 I0 Zero sequence component voltage current U0 I0 Unb Zero sequence voltage current unbalance U1 Positive sequence component U1 I1 Positive seque...

Page 110: ...all measured channels falls below the voltage interruption swell threshold ends when the Urms voltag on any one channel is equal to or greater than the interruption threshold plus the hysteresis Typic...

Page 111: ...rms voltage rises above the swell threshold ends when the Urms voltage is equal to or below the swell threshold minus the hysteresis voltage Typically the swell threshold is 110 of Udin typically the...

Page 112: ...Glossary and terms 112 PEM735_D00084_00_M_XXEN 02 2015...

Page 113: ...ection diagram voltage inputs 23 Connection of measuring current transformers 21 Connection via voltage transformers 25 Current 71 D Date 100 Description of function 17 Device features 13 Digital inpu...

Page 114: ...er Energy 85 Power factor rule 86 99 Power frequency 40 Power Quality 35 103 R Rapid Voltage Changes 45 Rapid voltage changes 45 Reactive power 85 Relay outputs 27 Report EN 50160 15 38 Ripple control...

Page 115: ......

Page 116: ...GmbH Co KG Postfach 1161 35301 Gruenberg Germany Londorfer Str 65 35305 Gruenberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E Mail info bender de www bender de Photos Bender and bender systembau a...

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