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VEGA 76 - El-forsyninganalysator

1. Range Accuracy Resolution Input impedance overloads 0 03 eet 0 5 2digit EN 100 ka 5V Minimal Current measurable is equal to 0 5 of Clamp Full Scale 13 1 4 Power measurement cos 0 5c 0 5i Value Range Accuracy Resolution 0 999 9W 0 1W Active power 1KW 999 9KW 0 1KW 1MW 999 9MW 0 1MW 0 999 9VAR 0 1VAR Reactive power 1KVAR 999 9KVAR 0 1KVAR 1MVAR 999 9MVAR 0 1MVAR 0 999 9VA 0 1VA Apparent power 1KVA 999 9KVA 1 0 2digit 0 1KVA 1MVA 999 9MVA 0 1MVA 0 999 9Wh 0 1Wh Active energy 1KWh 999 9KWh 0 1KWh 1MWh 999 9MWh 0 1MWh PE 0 999 9VARh 0 1VARh energy 1KVARh 999 9KVARh 0 1KVARh 1MVARh 999 9MVARh 0 1MVARh 13 1 5 Cos measurement Cosa Resolution Accuracy expressed in degrees 0 20 0 50 0 01 0 7 0 80 1 EN 44 Hien VEGA 76 13 1 6 Measurement of harmonics Range Accuracy Resolution DC 25h 5 0 2digit 26h 33h 10 0 2digit 0 1V 0 1A 34h 49h 15 0 2digit 13 1 7 Frequency measurement Instrument set to 50Hz Range Accuracy Resolution 47 53 1 0 1 digit 0 1Hz Instrument set to 60Hz Range Accuracy Resolution 57 63 6 1 0 1digit 0 1Hz 13 1 8 Compliance VEGA 76 complies with the Standards prescribed for e class 2 EN61036 static counters of active energy e class 3 IEC1268 static counters of rea
2. Erct Erc1 Erc2 Erc3 Values of the total capacitive reactive Energy of phase 1 phase 2 phase 3 respectively Est Es1 Es2 Es3 Values of the total Apparent Energy of phase 1 phase 2 phase 3 respectively Tab 4 Symbols used in the position ENERGY The symbols i and c stand for reactive powers Q and energies Er inductive and capacitive respectively EN 33 Hien VEGA 76 6 4 2 METER mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5 2 27 09 00 ee 27 09 00 TZ 27 09 00 1735212 ENERGY ENERGY ENERGY SINGLE PHASE THREE PHASE THREE PHASE Eal 0 000 kWh Eat 0 000 kWh Eat 0 000 kWh Ercl 0 000 KVARh Erct 0 000 KVARh Erct 0 000 kVARh Eril 0 000 kVARh Erit 0 000 kVARh Erit 0 000 kVARh Esl 0 000 kVAh Est 0 000 kVAh Est 0 000 kVAh P1 36 38 kW Pt 36 38 kW Pt 167 7 kw Ql 6 375 KVAR Qt 6 375 KVAR Qt 30 47 kVAR S1 36 94 KVA St 36 94 KVA St 170 4 KVA Meas Time 00 00 00 Meas Time 00 00 00 Meas Time 00 00 00 Meas Meas ChgP Meas Example of screen in single Example of screen in 3 wire Example of screen in 4 wire phase mode three phase mode three phase mode The symbols used are described in Tab 4 For eventual messages displayed see chapter 14 Fo
3. EN 18 Awa VEGA 76 5 4 ANALYZER MEMORY This option permits to display e The present content of the instrument memory e The size of memorized data e The residual space available for future recordings expressed in days and hours All stored data can be displayed only if downloaded to a PC by means of the software After selecting ANALYZER MEMORY from the Main Menu the screen below will be displayed ANALYZER MEMORY 01 Smp 02 01 01 23 02 Rec 02 01 02 01 03 R amp a 02 01 02 01 04 Rec 02 01 02 01 05 R amp a 02 01 02 01 06 Rec 04 01 05 01 DATA SIZE 0 11Mb REC TIME 0d 06h T J LAST ALL Example of ANALYZER MEMORY screen e Rec recordings effected with respective Start and Stop dates expressed in the format day month start day month stop without Voltage Sag and Surge detection e R amp a recordings effected with respective Start and Stop dates expressed in the format day month start day month stop with Voltage Anomalies Sag and Surge detection only for Skylab e Smp values of the samples of voltage and current stored by pressing SAVE e DATASIZE size of saved data e RECTIME size of available memory calculated on the basis of the parameters selected for recording therefore the most complete one expressed in the format days hours to make recordings The maximum quantity of Rec R amp a Smp which can be contained by the instrument is 35
4. Aw VEGA 76 Vin RMS value of kth voltage harmonic between n phase and Neutral lkn RMS value of kth current harmonic of n phase fkn Phase displacement angle between kth voltage harmonic and kth current harmonic of n phase Note It is to be noted that the expression of the phase Reactive Power with non sine waveforms would be wrong To understand this it may be useful to consider that both the presence of harmonics and the presence of reactive power produce among other effects an increase of line power losses due to the increased current RMS value With the above given relation the increasing of power losses due to harmonics is added to that introduced by the presence of reactive power In effect even if the two phenomena contribute together to the increase of power losses in line it is not true in general that these causes of the power losses are in phase between each other and therefore that can be added one to the other mathematically The above given relation is justified by the relative simplicity of calculation of the same and by the relative discrepancy between the value obtained using this relation and the true value It is to be noted moreover how in case of an electric installation with harmonics another parameter called distorted Power Factor dPF is defined In practice this parameter represents the theoretical limit value that can be reached for Power Factor if all the harmonics could be eliminated from the ele
5. 49 Voltage Total Harmonic Distortion Harmonics respectively DC Component 01 49 THD 01 03 05 07 Vref only if ANOM REC flag has been setON RMS reference value for Voltage used in Voltage Anomalies detection Voltage Sag and Surge The Reference is a Voltage Phase to Neutral for Single Phase and 4 wire three phase system b Voltage Phase to Phase for 3 wire three phase system Single phase 230V 3 wire 400V 4 wire 230V LIM LIM only if ANOM REC flag has been set ON High and Low Voltage Percent threshold used in Voltage Anomalies detection Voltage Sag and Surge Example Three Phase System 4 wire Vref 120 LIM 6 LIM 10 gt High Lim 127 2V Low Lim 108 0V The Instrument will detect a voltage Anomalies if the RMS Voltage Values calculated every 10ms beyond the above calculated thresholds see paragraph 16 1 Single phase 120V 3 wire 480V 4 wire 277V RMS value of the current of phase 1 phase 2 phase 3 and of the Harmonics respectively 11 12 13 IN Single phase I1 neutral respectively 3 wire 11 12 13 4 wire 11 12 13 IN THD DC 01 49 Current Total Harmonic Distortion DC Component 01 49 THD 01 03 05 07 EN 17 Hien VEGA 76 CO GENERATION ON the instrument is able to face situations of CO GENERATION of electrical equipment that is the equipment under test is able to generate energy bes
6. Following keys are enabled e F1 F2 only if the quantity of Rec R amp a Smp is higher than 7 to run over all the recordings stored in the instrument memory e F3 to cancel the last recording effected e F4 to cancel all the recordings effected EN 19 Hien VEGA 76 5 5 RESET This option re establishes the default settings of the instrument The default settings of the instrument consist of e ANALYZER CONFIG Frequency 50Hz Full scale of the clamps 1000A Transforming ratio of voltmetric transformers 1 Clamp Type FLEX Type of electrical equipment 4 wire Password enabled e RECORDER CONFIG Start Manual the recording is started at 00 sec mark on clock after pressing the START STOP key Stop Manual Integration period 15min Recording of harmonics ON Recording of Voltage anomalies Sag and Surge ON Voltage Reference for Sag and Surge detection 230V Upper Limit for Sag and Surge detection 6 Lower Limit for Sag and Surge detection 10 Selected voltages V1 V2 V3 Selected voltage harmonics THD 01 03 05 07 Selected currents 11 12 13 IN Selected current harmonics THD 01 03 05 07 CO GENERATION OFF Powers Pf and cosq selected Pt P1 P2 P3 Ati Q1i Q2i Q3i Qtc Qic Q2c Q3c St S1 S2 S3 Pft Pf1 Pf2 Pf3 dpft dpf1 dpf2 dpf3 Energies Eat Ea1 Ea2 Ea3 Erit Eri1 Eri2 Eri3 Erct Erc1 Erc2 Erc3 Est Es1 Es2 Es3 The RESET command will not erase the
7. systems Select TV RATIO in the ANALYZER CONFIG menu Set the desired value by pressing the multifunction keys F3 and F4 5 2 6 How to enable disable the password The instrument is provided with a protective routine to avoid the risk of being disturbed or interrupted during a recording or an energy measurement Once a recording or a direct energy measurement has been started with the option PASSWORD enabled after about 3 minutes from the last pressure on keys or selector rotation it won t be possible to press START STOP to stop the recording PASSWORD will be displayed and it will be necessary to insert the password In order to insert the password which is not changeable press the multifunction keys in the following sequence within 10 seconds F1 F4 F3 F2 If you wait more than 10 seconds the display will return to the meter mode and the instrument will continue recording If you insert a wrong password the message Password error will be displayed under PASSWORD After a few seconds the display will return to meter mode and the instrument will continue recording In order to enable disable this option the correct password must be entered The display will return to meter mode and START STOP will have to be pressed again to stop the recording You will then need to re enter the ANALYZER CONFIG menu and scroll up or down to the item PASSWORD ON by pressing the multifunction keys F1 and F2 Th
8. 1 phase 2 and phase 3 respectively dpft dpf1 dpf2 dpfa Values of the cosg total of phase 1 phase 2 and phase 3 respectively Single phase Pfl dPfl 3 wire Pft dPft 4 wire Pft Pf1 Pf2 Pf3 dPft dPfl dPf2 dPf3 Eat Eat Ea2 Ea3 Values of the active energy total of phase 1 phase 2 phase 3 Single phase Eal 3 wire Eat 4 wire Eat Eal Ea2 Ea3 Erit Erit Eri2 Er Values of the inductive reactive energy total of phase 1 phase 2 and phase 3 Erct Erc1 Erc2 Erc3 Values of the capacitive reactive energy total of phase 1 phase 2 phase 3 Single phase Eril Ercl 3 wire Erit Erct 4 wire Erit Eril Eri2 Eri3 ErctErcl Erc2 Erc3 Est Es1 Es2 Es3 Values of the Apparent Energy total of phase 1 phase 2 phase 3 Single phase Es1 3 wire Est 4 wire Est Es1 Es2 Es3 The value of the network frequency is automatically selected if at least one phase voltage for the single phase mode or the 4 wire three phase mode or at least one phase to phase voltage for the 3 wire three phase mode is selected The symbols i and c stand for reactive powers Q power factors Pf and cos dpf inductive and capacitive respectively Selecting a power factor Pf or a cose dPf for the recording automatically their inductive value and their capacitive value will be recorded separately For eventual messages displayed see Appendix 1 MESSAGES DISPLAYED
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10. For eventual messages displayed see chapter 14 Following keys are enabled e F1 only for three phase mode to display the values relevant to the following phase On the basis of the settings made as per paragraph 5 2 following screens are displayed cyclically e 3 wire three phase values of the Wattmeter 1 2 values of the wattmeter 2 3 e 4 wire three phase values of phase 1 phase 2 and phase 3 e ESC to return back to METER mode see paragraph 6 3 2 e SAVE to save in the instrument memory a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording e ENTER HOLD to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement e MENU to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement e START STOP to record selected parameters according to the instrument s settings see chapter 7 EN 32 Hien VEGA 76 6 4 POSITION ENERGY This function permits to display the values of the
11. Press HOLD again to disable this function activated Password A recording has been started and at least 5 minutes have Insertthe password passed from the last activity of the instrument see F1 F4 F3 F2 paragraph 7 Invalid date The inserted date is not correct Check the inserted date Energy Measuring The instrumentis taking an energy measurement Press F1 to stop it Memory Full The memory of the instrument is full Cancel some recordings after transferring them to a PC No ext supply A recording has been started without connecting the Verify it you really wantto start the recording external power supply without the extemal power supply In that case press START again No parameter sel A recording has been started without selecting any value to Press START STOP and select at least a be recorded value entering the MENU No Phase selected Voltage and or current harmonics have been selected and Select at least one phase voltage and or the corresponding flag has been enabled HARMONICS ON but no phase voltage or currenthas been selected current PASSWORD ERROR The inserted password is wrong see paragraph 7 Check the password PASSWORD OK The inserted password is correct Please wait The instrument is waiting for the recording to be started see paragraph 6 Recording The instrumentis recording see paragraph 6 Too many param More than 63 parameters have been selected harmonics Deselectsome values included o
12. RECORDING According to paragraph 5 3 a recording can be started manually or automatically Therefore after setting all parameters and leaving the Menu the instrument will start to record e MANUALLY the recording starts when the instrument time reaches 00 seconds value after pressing START STOP e AUTOMATICALLY If the operator has pressed START STOP the instrument will remain in stand by until the date and time previously set then the recording will start While if the operator doesn t press START STOP the recording will never start CAUTION For recordings ALWAYS use the external power supply although the A instrument allows the operator to perform a recording using internal batteries If you press START a recording without the external power supply the instrument will display a warning message No ext supply Press START key again to run the recording or press ESC to quit If during a recording the external power supply is de energized the instrument will continue the recording using the internal battery power until batteries are exhausted the data stored until the definitive turning off won t get lost For this we recommend you ALWAYS insert a new set of batteries before a long recording The instrument applies sophisticated algorithms to prolong the battery life Particularly e it automatically switches off the backlight after 5 seconds e f the instrument is displaying in real time and the external power sup
13. be easily overloaded EN 51 Aw VEGA 76 The 5 and the 11 harmonic contrast the current flow through the motors making its operation harder and shortening their average life In general the higher the ordinal harmonic number the smaller its energy is and therefore the impact it will have on the devices except for transformers 16 3 POWER AND POWER FACTOR DEFINITIONS In a standard electric installation powered by three sine voltages the following is defined Phase Active Power P V n I cos n 1 2 3 Phase Apparent Power S Vae l n 1 2 3 Phase Reactive Power 2 pi 0 15 P _F n S Phase Power Factor n 1 2 3 P Total Active Power Prop P P P Total Reactive Power Qor Q 0 0 Total Apparent Power 2 2 P SS Pn Total Power Factor Fror e TOT Van RMS value of voltage between phase n and Neutral TE RMS value of n phase current fn Phase displacement angle between voltage and current of n phase where In presence of distorted voltages and currents the previous relations vary as follows Phase Active Power n 1 2 3 P Phase Apparent Power n 1 2 3 Phase Power Factor n 1 2 3 Pp 7 n Distorted Power Factor APFn C0Sfin phase displacement between the n 1 2 3 fundamentals of voltage and current of n phase Total Active Power Pror P P P Total Reactive Power Qor Q 0 0 Total Apparent Power Total Power Factor where EN 52
14. input voltage is not sufficient to recognize the frequency value for example only current clamps are connected In this case the instrument generates an internal synchronism equal to the value of the set frequency 5 2 3 How to set the current range The value of this parameter must be always equal to the full scale of the current clamps used to take the measurement In case multi scale clamps are used the value of this parameter must be equal to the scale selected on the clamps Set the desired value by pressing the multifunction keys F3 and F4 EN 10 Aw VEGA 76 5 2 4 How to set the type of clamp The value of this parameter must be always equal to the type of clamp being used Three types of clamps are available e STD standard clamps or current transformers e FlexINT flexible clamps without integrator e FlexEXT flexible clamps with integrator Set the desired value by pressing the multifunction keys F3 and F4 CAUTION A If FlexINT is chosen the current range can be set only at 1000A or 3000A 5 2 5 How to set the value of the transformer voltage ratio TV RATIO The instrument can be also interfaced with step down transformers of the equipment under test it can display the value of the voltages present on the primary winding of these transformers To do this it will be necessary to set the value of the transformers windings ratio from 2 1 to 3000 1 The default is set at 1 1 for measurements of none transformer
15. phase and neutral voltage wires respecting the connections shown in the picture 4 If you want to measure current and power connect the clamp meter to the phase conductor respecting the specifications shown on the clamp and the connections shown in the picture In case of doubts select POWER and check if the active power P is positive If it s negative remove current transducer from the wire and reconnect it so the transducer label faces the opposite direction 5 Apply voltage to the electrical equipment under test if previously shut off for the instrument connection 6 The values of the available electrical parameters will be displayed on the display of the instrument For further details see the paragraph relevant to the position of the switch 7 You can press HOLD to interrupt the updating in real time of the displayed values 8 If you want to record a Check and if needed modify the values of the basic parameters see paragraphs 5 2 and 5 3 b Check and if needed modify the recording parameters by pressing MENU see the paragraph corresponding to the position of the rotary switch selected c To start the recording press START see chapter 6 EN 40 HT VEGA 76 11 2 USING THE INSTRUMENT IN A THREE PHASE 4 WIRE SYSTEM 1 350V phase earth or 600V CATIII 300 V phase to earth A If possible before connecting the instrument to the electrical equipment to CAUTION The maximum voltage between
16. the voltage of phase 1 must be associated to the clamp meter no 1 Apply voltage to the electrical equipment under test if previously shut off for the instrument connection The values of the available electrical parameters will be displayed For further details see the paragraph relevant to the position of the switch You can eventually press HOLD to interrupt the updating in real time of the displayed values If you want to record a Check and if needed modify the values of the basic parameters see paragraphs 5 2 and 5 3 b Check and if needed modify the recording parameters by pressing MENU see the paragraph corresponding to the position of the rotary switch selected c To start the recording press START see chapter 6 EN 41 Aw VEGA 76 11 3 USING THE INSTRUMENT IN A THREE PHASE 3 WIRE SYSTEM 1 f phase earth or 600V CATIII 300 V phase to earth cable on phase 2 e f possible before connecting the instrument to the electrical equipment CAUTION The maximum voltage between B1 and B4 inputs is 600 V CATII 350V Do not measure voltages exceeding the limits prescribed by this manual Should you exceed the voltage limits you could damage the instrument and or its components or endanger your safety Fig 3 Instrument connection in a 3 wire three phase system CAUTION e Please note that in this case the blue cable is connected to the green to be tested tak
17. with 10ms resolution It s possible to analyze recorded data ONLY by transferring them to a PC CAUTION Please note the difference between memorize and record These terms will be used repeatedly in this manual Please focus on their definitions and distinctions 2 3 INITIAL SCREEN When turning on the instrument by pressing ON OFF this screen will appear for a few seconds Vega 76 HT ITALIA SN 00000000 VER a CALIBRATION DATE 00 00 00 BAUD RATE 57600 Here you can see serial number of the instrument SN firmware software release VER calibration date CALIBRATION transmission speed through serial UO Baud Rate EN 5 Aw VEGA 76 3 PREPARING THE INSTRUMENT 3 1 PRELIMINARY CHECK This instrument was checked both mechanically and electrically prior to shipment All possible cares and precautions were taken to let you receive the instrument in perfect conditions Notwithstanding we suggest you to check it rapidly eventual damages may have occurred during transport if so please contact the local distributor from whom you bought the item Make sure that all standard accessories mentioned in paragraph 13 3 are included Should you have to return back the instrument for any reason please follow the instructions mentioned in paragraph 17 3 2 POWER SUPPLY The instrument can be powered by batteries refer to paragraph 13 1 11 for details on model no and battery life and
18. 2 respectively see paragraph 16 3 2 Pft pf1 pf2 pf3 Values of the power factors total of phase 1 phase 2 phase 3 respectively dPft dpf1 dpf2 dpf3 Value of the cosg total of phase 1 phase 2 phase 3 respectively Ead Pd Values of the Total Active Energy and Active Power On demand respectively Esd Sd Values of the Total Apparent Energy and Apparent Power On demand respectively Tab 3 Symbols used in the position POWER The symbols i and c stand for reactive powers Q power factors Pf and coso dpf respectively inductive and capacitive EN 29 Aw VEGA 76 6 3 2 METER mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5 2 27 09 00 SS Oe 27 09 00 E 27 09 00 17535212 SINGLE PHASE POWER POWER POWER THREE WIRE THREE PHASE VI 230 0 V Pt 64 19 kW Pt 135 8 kw Il 145 3 A Qt 10 99 KVAR Qt 24 59 KVAR P1 32 91 kW St 65 12 KVA St 138 0 KVA Q1 5 767 KVAR pft 0 99 i pft 0 98 i S1 33 41 KVA dpft 1 00 i dpft 1 00 i pfl 0 99 i Phseg 123 dpfl 0 99 i WAVE ChgP WAVE ChgP WAVE Example of screen in Example of screen in 3 Example of screen in 4 single phase mode wire three phase mode wire three phase mode The symbols used are described in Tab 3 For eventual messages dis
19. 25 5 V v31 383 7 V V3 230 6 V ThAV 0 0 freq 50 0 Hz v12 384 2 V freq 50 0 Hz V23 385 4 V v31 383 7 V freq 50 0 Hz Phseq 123 HARM WAVE HARM WAVE HARM WAVE Example of screen in Example of screen in 3 Example of screen in 4 single phase mode wire three phase mode wire three phase mode The symbols used are described in Tab 1 For eventual messages displayed see chapter 14 Following keys are enabled F1 F2 SAVE ENTER HOLD MENU START STOP to pass to HARMONIC mode see paragraph 6 1 3 to pass to WAVE mode see paragraph 6 1 4 to save in the instrument memory a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter in the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 22 H
20. 3 and 6 2 3 respectively These modes will be described in detail in the next paragraphs The symbols used are described below Symbol Description V1 V2 V3 RMS value of the voltage of phase 1 phase 2 phase 3 respectively V12 V23 V32 V31 RMS Value of the phase to phase voltages freq Network frequency Phseq Phase sequence indicator 123 correct 132 inverted 023 null voltage on the black wire 103 null voltage on the red wire 120 null voltage on the blue wire 100 null voltages on the red and blue wires 020 null voltages on the black and blue wires 003 null voltages on the black and red wires 11 12 13 RMS value of the current of phase 1 phase 2 phase 3 respectively IN RMS value of the current of the neutral Pt P1 P2 P3 Values of the active power total of phase 1 phase 2 phase 3 respectively P12 P32 only for 3 wire measurement Value of the power measured by the Wattmeter 1 2 and 3 2 respectively see paragraph 16 3 2 Qt Q1 Q2 Q3 Values of the reactive power total of phase 1 phase 2 phase 3 respectively Q12 Q32 only for 3 wire measurement Value of the power measured by the VAR meter Va1 2 and 3 2 respectively see paragraph 16 3 2 St 1 S2 3 Values of the apparent power total of phase 1 phase 2 phase 3 respectively 12 S32 only for 3 wire measurement Value of the power measured by the VA meter Va1 2 and 3
21. B1 B2 B3 B4 inputs is 600 V CATII Do not measure voltages exceeding the limits prescribed by this manual Should you exceed the voltage limits you could damage the instrument and or its components or endanger your safety Fig 2 Instrument connection in a three phase 4 wire system CAUTION be tested take the power supply off the electrical equipment Check and if needed modify the basic settings of the instrument see paragraphs 5 2 and 5 3 Particularly the 3PH4W mode must be set Rotate the switch to the position corresponding to the type of analysis desired In case of doubts select POWER see paragraph 6 3 Connect the phase and neutral voltage wires respecting the connections shown in the picture If you want to measure current and power connect the clamp meter to the phase conductor respecting the specifications shown on the clamp and the connections shown in the picture In case of doubts select POWER and connecting one clamp at a time check if a the phase sequence is correct see paragraph 6 1 2 b the active power P of each phase is positive If it s negative remove current transducer from the wire and reconnect it so the transducer label faces the opposite direction c the value of the Pf of each phase is not excessively low typically it s not lower than 0 4 In case the Pf is lower than 0 4 check if the phase voltage is associated to the right clamp meter for example
22. By pressing the multifunction keys F1 and F2 position the cursor on CONTRAST and confirm it by pressing ENTER By pressing the multifunction keys F3 and F4 adjust the contrast higher values correspond to a higher contrast lower values correspond to a lower contrast Press ENTER to SAVE the change or press ESC to quit the modification This setting will remain unchanged also after turning off the instrument 5 1 2 Howto set date and time By pressing the multifunction keys F1 and F2 position the cursor on DATE amp TIME and confirm by pressing ENTER By pressing the multifunction keys F1 and F2 position the cursor on the Date format FORMAT and by pressing the F3 or F4 keys select one of the following Date formats DD MM YY 2 digits for day 2 digits for Month 2 digits for Year or MM DD YY 2 digits for Month 2 digits for Day 2 digits for Year By pressing the multifunction keys F1 and F2 position the cursor on the value to be modified and change the value by pressing F3 and FA The time is expressed as hh mm 2 digits for hours 2 digits for minutes on a 24 hours basis Press ENTER to SAVE the change or press ESC to quit the modification This setting will remain unchanged also after turning off the instrument 5 1 3 Howto set the language By pressing the multifunction keys F1 and F2 position the cursor on LANGUAGE EN or LINGUA IT and confirm by pressing ENTER By pressing the multifunction keys F1 and F2 position the cu
23. CE IE User s Manual ITALIA Copyright HT ITALIA 2004 Release EN 2 00 08 06 2004 Hien VEGA 76 Contents 1 PRECAUTIONS AND SAFETY MEASURES rr rene 3 TAG GENERA Legoe a E 3 1 2 PRELIMINARY INSTRUCTIONS acli 3 1 3 DURING USE nericedeecne a a a E EE e EE 4 lhi e GE 4 2 GENERAL DESCRIPTION in 5 21 INTRODUCTION a 5 22 Ren lei 5 E GT Me E I peio aa aE aaa Ae Rasa tiene AEAEE AEE aE E 5 3 PREPARING THE INSTRUMENT wissisesnnisaiaosacsadzsansdarnsnsassnesarionsnsasanneasantenrnoneneneacaasene 6 3 1 PRELIMINARY E 6 3 2 POWER SUPPLY lea 6 3 3 CALIBRATION ai 6 34 STORAGE EE 6 4 HOWTOOPERATE L cara 7 4 1 INSTRUMENT DESCRIPTION cuccia 7 4 2 KEYBOARD DESEN reueg GEAR 7 4 3 DISPLAY DESCRIPTION E 8 44 BACKLIGHT dE 8 5 IMENUGENERAL i aa 9 Sle INITIAL CAR Hl e 9 5 1 1 How to adjust the COMMAS ic cccciceccvesteeceoes toes sees eee 9 5 1 2 How to set date DEER 9 5 1 9 HOWTO SEE ING TANGLAGS zoro eboli 9 5 2 BASIC SETTING ANALYZER CONFIG w ccccscscseccncssssstscocesstecsencsssencecndecsenecesenes 10 5 2 1 How to set the type of electrical system under test 10 5 2 2 _ How to set the fundamental frequency ii 10 5 2 3 How to set the Current range ee 10 5 2 4 How to set the type Of camp 11 5 2 5 How to set the value of the transformer voltage ratio TV RATIO 11 5 2 6 Howto enable disable the p a
24. F2 to position the cursor on the desired voltage harmonic and use the multifunction keys F3 F4 to select deselect it s Selected if highlighted in black Press ENTER to confirm Press ESC to leave the Menu without modifying the existing settings The instrument will record the values of the selected harmonics corresponding to the voltages selected in one of the two pages of the Menu previously illustrated NHT VEGA 76 Use the multifunction keys F1 F2 to position the cursor on the desired word and use the multifunction keys F3 F4 to modify the value or select deselect the desired parameter it s selected if marked in black Press ENTER to confirm Press ESC to leave the Menu without modifying the existing settings From 2 page of RECORDER CONFIG MENU ENTER L Es RECORDER CONFIG RECORDER CONFIG RECORDER CONFIG CURRENT REC CURRENT REC CURRENT REC HARM REC Pg ON HARM REC Pg ON HARM REC Pg ON EZ ETEA EN ETETEN EA Example of gs page in single Example of SCH page in 3 wire Example of ale page in 4 wire phase mode three phase mode three phase mode If you want to change Current Harm Selection place Cursor on the corresponding Pg symbol then Press F3 Use the multifunction keys F1 F2 to position the cursor on the RECORDER CONFIG desired current harmonic and CURRENT HARMONICS use the multifunction keys F3 F4 to select deselect it s sel
25. ICAL SPECIFICATIONS cricca nici iii 44 i FEATURES Lella 44 13 1 1 Voltage measurement Autoranging cette eeeeeeeeeeeeeeeeeeeeeeeeeeeee 44 13 1 2 Detection of voltage anomalies manual range selection 44 13 1 3 Current measurement using external transducer 44 13 1 4 Power measurement cos 0 50 Ob 44 13 1 5 GOSH measurement ae n egedegt ege 44 13 1 6 Measurement of harmonics EEN 45 13 1 7 Frequency Measurement 45 13 1 8 COMPRO 45 13 1 9 Temperature Ollio 45 Tos WO SONNY r a a aaa 45 13 1 11 General FEslUles rron ceca 45 E E CR WE 46 13 2 1 Environmental condtons Au 46 il Bee ai 46 13 3 ACCESSORIES ee 46 13 3 1 Standard accessories ac seccccnccereddnederesecenerencnaneneuencuenendinecdnenemevencuouendnentnanerends 46 13 3 2 e e TEE 46 14 APPENDIX 1 MESSAGES DISPLAYED nn erre 47 15 APPENDIX 2 RECORDABLE PARAMETERS SYMBOLS 48 16 APPENDIX 3 THEORETICAL OUTLINES vvccettieintensincateriscntdimnianduecsieisuansuniduausudces 49 16 1 VOLTAGE ANOMALIES VOLTAGE SAG AND SURGE 49 16 2 VOLTAGE AND CURRENT HARMONICS i 49 1621 E 49 16 2 2 Limit values for ue TE 50 16 2 3 Presence of harmonics Causes ENEE 51 16 2 4 Presence of harmonics CONSEQUENCES 51 16 3 POWER AND POWER FACTOR DEFINITIONS i 52 16 3 1 Co
26. OWER and pressing F1 key thrice you can reach the Peak Demand mode This mode shows the values corresponding to the running recording or to last performed recording if any recording is running The Peak Demand screen shows the Max Average value of Active Power and the corresponding Energy or Max Average value of Apparent Power and the corresponding Energy measured during the last or running recording The Average value is evaluated in the Integration Period set for the recording This screen also shows the corresponding Active Energy and the corresponding Peak Date and Time 27 09 00 17 35 12 27 09 00 e e 12 PEAK DEMAND PEAK DEMAND THREE PHASE THREE PHASE Ead 98 36 kWh Esd 120 84 kVAh Pd 24 59 kW sd 30 21 kVA Peak Date Peak Date 25 09 00 17 00 25 09 00 18 15 Int Period 15min Int Period 15min Rec n 06 Rec n 06 ChgP Wh VAh ChgP Wh VAh Examples of PEAK ENERGY DEMAND screen The symbols used are described in Tab 3 For eventual messages displayed see chapter 14 Following keys are enabled e F1 to display the previous or the following screen On the basis of the settings made as per paragraph 5 2 following screens are displayed cyclically e Three phase 3 wire total three phase values Wattmeter phases 1 2 and 2 3 values Peak Demand e Three phase 4 wire total three phase values phasel phase2 and phase3 values Peak Demand e F3 to show Active Power and Act
27. T PERIOD HARM REC ON ANOM REC ON 15min 17 Page of the RECORDER CONFIG MENU ENTER L RECORDER CONFIG ge A 1 REC Pg ON 230V 243 8V 207 0V P N 06 10 pe tt ECH o Example of 2 page in single phase mode with ANOM flag enabled RECORDER CONFIG VOLTAGE REC HARM REC Pg ON Vref P P LIM 06 LIM 10 400V 424 0V 360 0V Ez RR EZ Es Example of 2 page in 3 wire three phase mode with ANOM flag enabled If you want to change Voltage Harm Selection place the cursor on the corresponding Pg symbol then Press F3 ENTER RECORDER CONFIG VOLTAGE HARMONICS a ee ee Example of sub page VOLTAGE HARMONICS EN 13 To Select MANUAL or AUTOMATIC start stop mode place the cursor on MANU or AUTO using the a multifunction key F1 or F2 and select the desired mode using F3 or F4 Use the multifunction keys F1 F2 to position the cursor on the desired word and use the multifunction keys F3 F4 to modify the value Press ENTER to confirm and proceed inside the Menu the Menu keeping the settings made Press ESC to leave the Menu without modifying the existing parameters RECORDER CONFIG VOLTAGE REC 1 2 3 v12 V32 V31 HARM REC Pg ON Vref P N LIM 06 LIM 10 230V 243 8V 207 0V ae ee WC E Example of 2 page in 4 wire three phase mode with ANOM flag enabled Use the multifunction keys F1
28. aused by non linear loads such as electric household appliances personal computers or speed control units for motors Harmonic distortion causes significant currents at frequencies that are odd multiples of the fundamental frequency Harmonic currents affect considerably the neutral wire of electric installations In most countries the mains power is three phase 50 60Hz with a delta primary and star secondary transformers The secondary generally provides 230V AC from phase to neutral and 400V AC from phase to phase Balancing the loads on each phase has always represented an headache for electric systems designers Until some ten years ago in a well balanced system the vectorial sum of the currents in the neutral was zero or quite low given the difficulty of obtaining a perfect balance The devices were incandescent lights small motors and other devices that presented linear loads The result was an essentially sinusoidal current in each phase and a low current on the neutral at a frequency of 50 60Hz Modern devices such as TV sets fluorescent lights video machines and microwave ovens normally draw current for only a fraction of each cycle thus causing non linear loads and subsequent non linear currents All this generates odd harmonics of the 50 60Hz line frequency For this reason the current in the transformers of the distribution boxes contains only a 50Hz or 60Hz component but also a 150Hz or 180Hz component a 50Hz or 300Hz c
29. by an external power supply refer to paragraph 13 3 1 for details on the model supplied with the instrument as a standard accessory When batteries are low a low battery indication is displayed To replace insert batteries follow the instructions indicated in paragraph 12 2 CAUTION For recordings use ALWAYS the external power supply although the AN instrument allows the operator to perform a recording using internal batteries The instrument applies sophisticated algorithms to prolong the battery life Particularly e it automatically switches off the backlight after 5 seconds e H the instrument is displaying in real time and the external power supply is not connected after about 5 minutes from the last pressure on keys or selector rotation the instrument automatically turns off AUTOPOWER OFF procedure e lf the instrument is recording or is measuring energy and the external power supply is not connected after about 5 minutes from the last pressure on keys or selector rotation the instrument starts a special procedure to save batteries ECONOMY MODE the instrument keeps recording but the display is turned off 3 3 CALIBRATION The instrument complies with the technical specifications contained in this manual and such compliance is guaranteed for 1 year Annual recalibration is recommended 3 4 STORAGE After a period of storage in extreme environmental conditions exceeding the limits mentioned in paragraph 13 2 let th
30. cal shocks 1 2 PRELIMINARY INSTRUCTIONS e This instrument has been designed for use in environments of pollution degree 2 e t can be used for voltage and current measurements on installations of overvoltage category Ill 600V phase to phase 300V phase to earth or CATII 350V phase to earth up to and no more than 2000 meters altitude e You are recommended to respect the usual safety regulations aimed at protecting you against dangerous currents and protecting the instrument against improper use e Only the original accessories supplied along with the instrument guarantee compliance with the safety Standards in force They must be in a good conditions and if necessary replaced with identical ones e Do not test nor connect to any circuit exceeding the specified overload protection e Do not take measurements under environmental conditions exceeding the limits indicated in this manual e Before connecting cables test probes crocodiles and clamps to the installation to be tested make sure that the rotary selector is positioned on the right function EN 3 NHT VEGA 76 1 3 DURING USE CAUTION An improper use may damage the instrument and or its components or injure the operator e When the instrument is connected to the circuit under test do not touch any unused terminal e When measuring current other currents located near the leads may affect the measuring accuracy e When measuring current always position the wire i
31. ch phase voltage and current 6 x 128 samples are acquired on a module of 16 x 20ms repeated for the three phases 16 4 1 Integration periods The storage of all the data would require a huge memory capacity Therefore we ve tried to find out a storage method which permits to compress the information to be memorized though providing significant data The chosen method is the integration one after a certain period called integration period which can be set from 5 seconds to 60 minutes 3600sec the instrument extracts from the sampled values the following values e Minimum value of the parameter during the integration period harmonics excluded e Medium value of the parameter intended as arithmetic average of all the values registered during the integration period e Maximum value of the parameter during the integration period harmonics excluded Only this information repeated for each parameter to be memorized are saved in the memory along with starting time and date of the integration period Once these data are memorized the instrument restarts to take measurements for a new period 16 4 2 Power factor calculations According to the standards in force the medium power factor can t be calculated as average of the instantaneous power factors It must be obtained from the medium values of active and reactive power Each single medium power factor of phase or total is therefore calculated at the end of each integra
32. chapter 7 INT PERIOD The value of this parameter determines every how many seconds the values of all the selected parameters will be memorized see chapter 16 4 1 Available choices 5sec 10sec 30sec 1min 2min 5min 10min 5min 30min 60min 15min HARM REC ON the instrument will record the values of the selected voltage and current harmonics corresponding to the voltages and currents selected in the corresponding pages Voltage and Current Example If the following parameters are selected a Phase Voltage 1 and 2 THd Harmonics 1 3 5 b Phase Current 2 and 3 THd Harmonics 3 5 7 The instrument will record a The Phase Voltage 1 and 2 THD and Harmonics 1 3 5 of the Phase Voltage 1 and 2 while it will not record anything about Phase Voltage 3 b The Phase Current 2 and 3 THD and Harmonics 3 5 7 of the Phase Current 2 and 3 while it will not record nothing about Phase Current 1 OFF the instrument will not record any voltage or current harmonic selected ANOM REC ON the instrument will record Voltage Anomalies voltage Sag and Surge See paragraph 16 1 OFF the instrument will not record any voltage Sag and Surge V1 V2 V3 V12 V23 or V32 V31 RMS value of the voltage of phase 1 phase 2 phase 3 respectively values of the phase to phase voltages 1 2 2 3 or 3 2 and 3 1 Single phase V1 3 wire Vi2 V32 Vai 4 wire Vi Vo V3 THD DC 01
33. ctive energy 13 1 9 Temperature drift Temperature drift 13 1 10 Safety The instrument complies with Insulation Pollution Overvoltage category 13 1 11 Dimensions Weight including battery Power supply Battery type Indication of low battery Battery life External power supply Display Specifications Resolution Dot size Visible area Sampling Sampling speed No of samples per period General Features Mechanical characteristics 0 1 x accuracy K EN 61010 1 A2 1996 Class 2 2 CAT III 300V CAT Il 350V Phase Earth CAT III 600V Phase Phase 225 L x 165 W x 105 H mm 1 5kg 6 batteries x 5V series AA LR6 the symbol is displayed when the battery is low approx 50 hours Use only the provided power supplier dot matrix with backlight 128 x 128 dots 16384 dots 0 5mm x 0 5mm 73mm x 73mm 156 25usec 50Hz 128 EN 45 Hien VEGA 76 13 2 ENVIRONMENT 13 2 1 Environmental conditions Reference temperature 73 F 2 F 23 C 1 C Operating temperature 32 F to 122 F 0 C 50 C Relative humidity lt 70 Storage temperature 14 F to 140 F 10 C 60 C Storage humidity lt 80 13 2 2 EMC This instrument has been designed in compliance with the EMS standards in force and its compatibility has been tested for EN61326 1 1997 A1 1997 This instrument complies with the prescriptions of the European directive on low volta
34. ctric installation 16 3 1 Conventions on powers and power factors As for the recognition of the type of reactive power of the type of power factor and of the direction of the active power the below conventions must be applied The stated angles are those of phase displacement of the current compared to the voltage for example in the first panel the current is in advance from 0 to 90 compared to the voltage Equipment under test Inductive Generator gt Equipment under test Capacitive Load 90 P 0 P P P P P 0 Pfc 1 Pfc 1 Pfc Pf Pfc 1 Pfi 1 Pfi Pf Pfit 1 Pfi 1 Qc 0 Qc 0 Qc Q Qc 0 Qi 0 Qi Q Qi 0 Qi 0 180 0 P 0 P P P P P 0 Pfc 1 Pfc Pf Pfc 1 Pfc 1 Pfi 1 Pfi 1 Pfi Pf Pfi 1 Qc 0 Qc Q Qc 0 Qc 0 Qi 0 Qi 0 Q Q Qi 0 270 Equipment under test Capacitive Generator gt Equipment under test Inductive Load EN 53 NHT VEGA 76 Symbol Significance Remarks Value of the active power Positive parameter user Value of the active power Negative parameter generator Qiz Valueoftheinductive reactive power Value The active power positive or TT n T is defined in the panel and therefore acquires the value of the active power in that moment The reactive power inductive or capacitive positive or negative is defined in the panel and therefore acquires the value of
35. ctrical shocks Disconnect cables and clamps from the circuit under test Turn off the instrument by pressing ON OFF Remove the cables from the input terminals Unscrew the battery cover and remove it Replace batteries with new ones of the same type refer to paragraph 13 1 11 observing the proper polarities Reposition the cover and screw it again Use the appropriate battery disposal methods for your area SE NO 12 3 CLEANING Use a soft dry cloth to clean the instrument Never use wet clothes solvents water and so on EN 43 Hien VEGA 76 13 TECHNICAL SPECIFICATIONS 13 1 FEATURES The accuracy is stated as of the reading number of digits It refers to the following atmospheric conditions temperature 73 F 2 F 23 C 1 C with relative humidity lt 75 13 1 1 Voltage measurement Autoranging Range Accuracy Resolution Input impedance 15 310V A Sen 0 2V 300KQ phase neutral 310 600V Ao er ecg 0 4V 600kQ phase phase 13 1 2 Detection of voltage anomalies manual range selection Voltage Range Accuracy Resolution Input impedance 15 310V o az 0 2V 300kQ phase neutral 30 600V SES 0 4V 600kQ phase phase Time Accuracy ref to 50Hz Resolution 10ms 1 2 period of fundamental 10ms 1 2 period of fundamental 13 1 3 Current measurement using external transducer Protection against
36. e multifunction keys F1 F2 to position the cursor on the corresponding Pg Symbol and then press F3 ENTER L RECORDER CONFIG RECORDER CONFIG RECORDER CONFIG GER SEH GER Erit Eril eEri2 Erct Ercl Erc2 G GEN GER Li La NEE SASSI RE SG SE RECH WE Example of ENERGY sub page Example of ENERGY sub page Example of ENERGY sub page in single phase mode in 3 wire three phase mode in 4 wire three phase mode By selecting deselecting the active energies for the recording the corresponding active powers will be automatically selected deselected By selecting deselecting the reactive energies for the recording the corresponding reactive powers will be selected deselected By selecting deselecting the reactive energies for the recording the corresponding reactive powers will be selected deselected EN 16 Hien VEGA 76 Symbols Description Advised settings START MAN The recording of all selected parameters will start at 00 seconds after pressing START STOP see chapter 7 STOP MAN The recording of all selected parameters will be interrupted manually by pressing START STOP see chapter 9 START AUTO STOP AUTO The recording of all selected values will be started interrupted at the set dates and times In order to start the recording the user will have to press START STOP to set the instrument in Stand by mode until the start date and time previously set see
37. e help file In order to transfer the memorized data from the instrument to the PC the following procedure after Software Installation must be followed 1 Switch ON the instrument and wait for the initial screen to disappear 2 Connect the serial output of the instrument to the serial output of the PC through the serial cable 3 Run the Program and Close the introduction window 4 Select the Download command 5 Refer to the software help file for further instructions EN 39 NHT VEGA 76 11 MEASURING PROCEDURES 11 1 USING THE INSTRUMENT IN A SINGLE PHASE SYSTEM CAUTION The maximum voltage between B1 and B4 inputs is 600 V CATII 350V phase earth or 600V CATIII 300 V phase to earth Do not measure voltages exceeding the limits prescribed by this manual Should you exceed the voltage limits you could damage the instrument and or its components or endanger your safety BLUE Fig 1 Instrument connection in a single phase system CAUTION If possible before connecting the instrument to the electrical equipment to be tested take the power supply off the electrical equipment 1 Check and if needed modify the basic settings of the instrument see paragraphs 5 2 and 5 3 Particularly the single phase mode must be set 2 Rotate the switch to the position corresponding to the type of analysis desired In case of doubts select POWER see paragraph 6 3 3 Connect the
38. e instrument resume normal measuring conditions before using it Hien VEGA 76 4 HOW TO OPERATE 4 1 INSTRUMENT DESCRIPTION Legend Inputs for voltage and current RS232 serial output Plug for external power supply Display Selector switch Keyboard DAUN 4 2 KEYBOARD DESCRIPTION The following keys are available ON OFF F1 F2 F3 F4 MENU e ESC amp ENTER HOLD amp SAVE amp START STOP turning on turning off Backlight ON automatic switching off after 5 sec multifunction keys The various functions are deducible from the symbols shown on the bottom of the display by pressing MENU it s possible to check and modify the recording parameters to leave a menu or a sub menu double function key v ENTER to confirm the settings made v HOLD to block the value updating in real time on all screens This function is disabled when recording or measuring energy When this function is active its not possible to record or take energy measurements to save a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to start stop manually a recording see chapter 7 EN 7 NHT VEGA 76 4 3 DISPLAY DESCRIPTION The display is a graphic module with a resolution of128 x 128 pixels 16384 pixels overall Each pixe
39. e the power supply off the electrical equipment Check and if needed modify the basic settings of the instrument see paragraphs 5 2 and 5 3 Particularly the 3 wire mode must be set Rotate the switch to the position corresponding to the type of analysis desired In case of doubts select POWER see paragraph 6 3 Connect the phase and neutral voltage wires following the connections shown in Fig 3 If you want to measure current and power connect the clamp meter to the phase conductor respecting the specifications shown on the clamp and the connections shown in the picture In case of doubts set temporarily the 3PH4W mode then select POWER connect the blue wire of the instrument to earth and connecting one clamp at a time check if a The phase sequence is correct see paragraph 6 1 2 b The active power P of each phase is positive If negative turn the clamp of the phase in uestion c The value of the Pf of each phase is not excessively low typically it s not lower than 0 4 In case the Pf is lower than 0 4 check if the phase voltage is associated to the right clamp meter for example the voltage of phase 1 must be associated to the clamp meter no 1 d After checking and if needed modifying the connection of the instrument to the equipment re set the 3 wire mode and the connections shown in the picture blue and green wire together Apply voltage to the electrical equipment under test if previously shut off
40. ected if marked in black Press ENTER to confirm Press ESC to leave the Menu without modifying the existing settings The instrument will record the values of the selected harmonics corresponding to the currents selected in one of the two pages WE oe __ of the Menu previously Example of sub page illustrated CURRENT HARMONICS g ENTER EN 14 NHT VEGA 76 From 3 page of RECORDER CONFIG MENU ENTER L RECORDER CONFIG CO GENERATION ON POWER Pg ENERGY Pg Example of 4 page In order to select the POWER to be recorded use the multifunction keys F1 F2 to position the cursor on the corresponding Pg Symbol and then press F3 ENTER L RECORDER CONFIG RECORDER CONFIG RECORDER CONFIG Ha SE P dPf1 ESTEA RES EES REG SN RE RES W I REG RG EC WE Example of POWER sub page in Example of POWER sub page Example of POWER sub page in single phase mode in 3 wire three phase mode 4 wire three phase mode By selecting the active powers for the recording the corresponding active energies will be automatically selected By selecting the reactive powers for the recording the corresponding reactive energies will be automatically selected EN 15 y INVHT VEGA 76 From 3 page of RECORDER CONFIG MENU ENTER L RECORDER CONFIG CO GENERATION ON POWER Pg ENERGY Pg Example of 4 page In order to select the ENERGIES to be recorded use th
41. en turn off the password by pressing the multifunction keys F3 and F4 EN 11 NHT VEGA 76 5 3 BASIC SETTING RECORDER CONFIG This option permits to check and eventually modify the recording parameters and the selected parameters up to a maximum of 64 The calculation of the selected values is not affected by the selectors position If the number of selected values exceeds 64 the message sine asi will be displayed The MENU mode is divided into 4 separate sub pages v 1 page This page permits to set the START STOP mode AUTO or MANUAL the START and STOP time if AUTO mode is selected the Integration Period value the Enabling Disabling of Voltage Anomalies detection the Enabling Disabling of Harmonics detection Press ENTER to confirm the settings and pass to the following page Press ESC to leave the Menu without modifying the existing parameters v_2 page This page is dedicated to the settings related to the VOLTAGE recording Press ENTER to confirm the settings and pass to the following page Press ESC to leave this page without modifying the existing parameters From this page you can enter the sub page Harmonics which permits to select the voltage harmonics to be recorded Press ENTER to confirm the settings and leave the Menu Harmonics Press ESC to leave the Menu Harmonics without modifying the existing parameters v 3 page This page is dedicated to the settings related to the CURRENT recording Pres
42. ent present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 27 Hien VEGA 76 6 2 4 WAVE mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5 2 The screens show the waveform of the phase currents 27 09 00 Le Sor 2 27 09 00 Ee Example of screen in single Example of screen in 3 wire phase mode or 4 wire three phase mode The symbols used are described in Tab 2 For eventual messages displayed see chapter 14 Following keys are enabled F1 ESC SAVE ENTER HOLD MENU START STOP only for three phase mode to display the values relevant to the following phase to return back to METER mode see paragraph 6 2 2 to save in the instrument memory a record of Smp type
43. eutral DC Continuous component of voltage or current h01 h49 Harmonic 01 Harmonic 49 of voltage or current ThdV Factor of total harmonic distortion of the voltage see paragraph 16 2 Thdl Factor of total harmonic distortion of the current see paragraph 16 2 Pt P1 P2 P3 Values of the total active power of phase 1 phase 2 phase 3 respectively P12 P32 only for 3 wire measurement Value of the power measured by the Wattmeter 1 2 and 3 2 respectively see paragraph 16 3 2 Qt Q1 Q2 Q3 Values of the total reactive power of phase 1 phase 2 phase 3 respectively Q12 Q32 only for 3 wire measurement Value of the power measured by the VARmeter 1 2 and 3 2 respectively see paragraph 16 3 2 St 1 S2 3 Values of the total apparent power of phase 1 phase 2 phase 3 respectively 12 S32 only for 3 wire measurement Value of the power measured by the VAmeter 1 2 and 3 2 respectively see paragraph 16 3 2 Pft pf1 pf2 pf3 Value of the total power factors power factors of phase 1 phase 2 phase 3 respectively dP t dpf1 dpf2 dpf3 Values of the total cose of phase 1 phase 2 phase 3 respectively Eat Ea1 Ea2 Ea3 Values of the total active energy of phase 1 phase 2 phase 3 respectively Erit Erit Eri2 Eri3 Values of the total inductive reactive Energy of phase 1 phase 2 phase 3 respectively Erct Erc1 Erc2 Erc3 Values of the total capacitive reactive Energy
44. f during a recording the external power supply is de energized the instrument will continue the recording using the internal battery power until batteries are exhausted the data stored up to the point the instrument shuts down won t get lost For this we recommend you ALWAYS insert a new set of batteries before a long recording The instrument uses sophisticated algorithms to prolong the battery life Particularly if the instrument is recording or is measuring energy and the external power supply is not connected after about 5 minutes from the last key pressure or switch rotation the instrument starts a special procedure to save the batteries ECONOMY MODE the instrument keeps recording but the display is turned off During a recording the following keys and functions are disabled AUTOPOWER OFF ON OFF HOLD SAVE Press MENU and the following screen will appear INFO REC n XX START 09 18 01 11 35 INT PERIOD 15min REC PERIODS 00004 REC TIME 139d 02h HARM REC ON ANOM REC 0 N ANOMALIES esa N 00000 This page includes START Date and Time Integration Period Actual Number of Elapsed Integration Periods Actual Recording Time Status of Harmonic Flag Status of Voltage Anomalies Flag Number of Voltage anomalies occurred during the recording AR EN 37 Aw VEGA 76 9 STOPPING A RECORDING OR AN ENERGY MEASUREMENT The instrument uses a protective routine to avoid the risk of being disturbed
45. for the instrument connection The values of the available electrical parameters will be displayed of the instrument For further details see the paragraph relevant to the position of the switch You can press HOLD to interrupt the updating in real time of the displayed values If you want to record a Check and eventually modify the values of the basic parameters see paragraphs 5 2 and 5 3 b Check and eventually modify the recording parameters by pressing MENU see the paragraph corresponding to the position of the rotary switch selected c To start the recording press START see chapter 6 EN 42 Aw VEGA 76 12 MAINTENANCE 12 1 GENERAL This is a precision instrument Strictly follow the instructions for use and storage reported in this manual to avoid any possible damage or danger during use Do not use this tester under unfavorable conditions of high temperature or humidity Do not expose to direct sunlight Be sure to turn off the tester after use If the instrument is not to be used for a long period you are recommended to remove batteries to avoid leakages of battery liquid which may damage its internal circuits 12 2 BATTERY REPLACEMENT When the low battery indication refer to paragraph 13 1 11 is displayed the batteries are to be replaced CAUTION f Only qualified technicians should operate the instrument Before replacing the battery disconnect test leads from any energised circuits to avoid ele
46. ge 73 23 CEE LVD and EMC directive 89 336 EEC amended by 93 68 EEC 13 3 ACCESSORIES 13 3 1 Standard accessories Description Model name Instrument VEGA 76 Carrying case BORSA2051 External power supply 12VDC A0050 flexible head 300 3000A without integrator 3x HTFLEX33 Kit composed of 4 cables banana crocodile KITENERGY2 black red blue green software on CD ROM and serial cable TOPLINK User s manual ISO9001 calibration certificate 13 3 2 Optional accessories Description Model name Kit of straps and hooks to hang the instrument on CN0050 the neck Case 3x1 5A 1V for connection to TA HT903 Clamp for AC currents 200 2000A HP30C2 Clamp for AC currents 3000A HP30C3 Clamp 10 100 1000A HT97U Clamp 1 100 1000A HT96U EN 46 Hien VEGA 76 14 APPENDIX 1 MESSAGES DISPLAYED Message Description Advices AUTONOM Available memory autonomy for the recording which is being effected CLEAR ALL Enter The operator is trying to cancel all the recordings effected Press ESC in order not to cancel the whole memory press ENTER to confirm CLEAR LAST Enter The operator is trying to cancel the last recording effected Press ESC in order not to cancel the last recording press ENTER to confirm Data saved The data have been saved DATA SIZE Dimensions of the stored data HOLD By pressing the proper key the HOLD function has been
47. harmonics of the other voltages available The voltage displayed is indicated above the F3 key to display the page of the harmonics h01 h24 symbol h24 or the page of the harmonics h25 h49 symbol h49 to return back to METER mode see paragraph 6 1 2 to save in the instrument memory a record of Smp type see paragraph 5 4 and the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 23 Hien VEGA 76 6 1 4 WAVE mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5 2 The screens show the waveform of the phase or phase to phase voltage 27 09 00 e L2 27 09 00 E E 27 09 00 I7 35412 V12 400 2 V Vpk12 565 5 V freq 50 0 Hz pe de DD Examp
48. ics THD 01 03 05 07 Selected currents 11 12 13 IN Selected current harmonics THD 01 03 05 07 CO GENERATION OFF Powers Pf and cosq selected Pt P1 P2 P3 Ati Q1i Q2i Q3i Qtc Qic Q2c Q3c St S1 S2 S3 Pft Pf1 Pf2 Pf3 dpft dpf1 dpf2 dpf3 Energies Eat Eat Ea2 Ea3 Erit Erit Eri2 Eri3 Erct Erc1 Erc2 Erc3 Est Es1 Es2 Es3 If the user changed the instrument s settings can quickly resume the above configuration using the RESET option see paragraph 5 5 By pressing START STOP the recording of the selected parameters is started according to the settings made in the MENU see paragraphs 5 2 and 5 3 The rotary switch position doesn t affect the recording setting As the default value of the integration periods is set at 15 minutes the instrument will store data in the temporary memory for 15 minutes Afterwards the instrument will elaborate the results saved in the temporary memory and will save the first series of values in the definitive memory Therefore if an integration period of 15 minutes has been set the recording will continue for about 15 minutes before producing a series of recorded values If the recording is interrupted before the selected integration period has completely elapsed the data stored in the temporary memory will not be elaborated and the corresponding series of values won t be transferred to the definitive memory EN 36 NHT VEGA 76 8 DURING A RECORDING I
49. ides absorbing it Accordingly the instrument will record the powers and energies both absorbed and generated see paragraph 16 3 1 If this flag is enabled the maximum number of parameters which can be selected decrease to 38 OFF the instrument will record ONLY the powers and energies absorbed Pt P1 P2 P3 P12 P32 Values of the active power total of phase 1 phase 2 and phase 3 only for 3 wire measurement value of the power measured by the Wattmeter 1 2 and 3 2 respectively Single phase P1 3 wire Pt 4 wire Pt P1 P2 P3 Qti Qui Q2i Q3i Q12i Q32i Values of the inductive reactive power total of phase 1 phase 2 phase 3 only for 3 wire measurement value of the reactive inductive power measured by the VAR meters 1 2 and 3 2 respectively Qtc Qic Q2c Q3c Q12c Q32c Values of the capacitive reactive power total of phase 1 phase 2 phase 3 only for 3 wire measurement value of the reactive capacitive power measured by the VA meters 1 2 and 3 2 respectively Single phase Qli Q1c 3 wire Qt Qtc 4 wire Qt Q1i Q2i Q3i Qtc Q1c Q2c Q3c St 1 S2 S3 12 32 Values of the apparent power total of phase 1 phase 2 phase 3 only for 3 wire measurement value of the power measured by the VA meters 1 2 and 3 2 respectively Single phase 1 3 wire St 4 wire St 1 2 3 Pft Pf1 Pf2 Pf3 Values of the power factors total of phase
50. ien VEGA 76 6 1 3 HARM mode By selecting the HARM mode one of the below screens will be displayed according to the settings made as per paragraph 5 22 The screens show the harmonics see paragraph 16 2 of the phase or phase to phase voltage 27 09 00 17235312 27 09 00 17 35 12 27 09 00 RE Re Example of screen in single Example of screen in 3 wire Example of screen in 4 wire phase system three phase system three phase system The symbols used are described in Tab 1 For eventual messages displayed see chapter 14 The displayed histograms represent the harmonic content of the voltage under test The value of the first harmonic h01 fundamental at 50Hz is not represented in scale along with the other harmonics in order to maximize the display of the latter In case both voltage and current are connected to the instrument inputs eventual negative values of harmonics therefore represented under the horizontal axis indicate that such voltage harmonics are generated by the load Following keys are enabled F3 F4 F1 F2 ESC SAVE ENTER HOLD MENU START STOP to move the cursor of the selected harmonic leftwards and rightwards respectively At the same time the values relevant to the order no of the selected harmonic and to the corresponding absolute and relative values calculated on the basis of the fundamental are updated only for three phase mode to display the values of the
51. instruments memory EN 20 HT VEGA 76 6 SWITCH FUNCTIONS For a simple usage the main functions of the instrument can be selected by rotating the selector e Position VOLTAGE to display voltage and corresponding harmonics see paragraph 6 1 e Position CURRENT to display current and corresponding harmonics see paragraph 6 2 e Position POWER to display all the parameters measurable by the instrument voltage current active reactive and apparent power power factor cos and energy see paragraph 6 3 e Position ENERGY to display active reactive and apparent power power factor coso and energy see paragraph 6 4 More practically we may schematize the right procedure of use as follows Check and eventually modify the basic settings of the instrument By rotating the switch select the desired type of measurement Connect the instrument to the electrical system to be tested Evaluate the values of the parameters under test If you want to record a Decide what to record b Press MENU and check if the existing parameters meet your requirements 6 Connect the external power supply 7 Start the recording by pressing START STOP 6 1 POSITION VOLTAGE This function permits to display in real time the RMS value of AC DC voltage the peak and Thd value of the 3 phase voltages see paragraph 16 2 the waveform and the harmonic spectrum of the 3 phase voltages 6 1 1 Symbols The VOLTAGE position has three
52. ive Energy values e F4 to show Apparent Power and Apparent Energy values e SAVE to save in the instrument memory a record of Smp type see paragraph 5 4 and the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording e ENTER HOLD to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement e MENU to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement e START STOP to record selected parameters according to the instrument s settings see chapter 7 EN 31 NHT VEGA 76 6 3 3 WAVE mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5 2 The screens show the waveform of the phase currents and the phase or phase to phase voltage 27 09 00 aby prone nan er 27 09 00 E E 27 09 00 iso Example of screen in single Example of screen in 3 wire Example of screen in 4 wire phase mode three phase mode three phase mode The symbols used are described in Tab 3
53. l has a dimension of 0 5mm x 0 5mm the visible area is a square of 73mm x 73mm The first line of the display shows date and time If not correct you can set the exact ones according to the procedure described at paragraph 5 1 2 On the top right corner of the display you can always see a battery indicator and if the external power supply is connected the corresponding symbol vortace I VOLTAGE v1 230 2 V v1 230 2 V v2 230 5 V v2 230 5 V v3 230 6 V v3 230 6 V V12 384 2 V V12 384 2 V v23 385 4 V v23 385 4 V vii 383 7 V V31 383 7 V freq 50 0 Hz freq 50 0 Hz Phseq 123 Phseq 123 HARM WAVE HARM WAVE These symbols will be omitted in the following illustrations 4 4 BACKLIGHT FUNCTION When the instrument is turned on press ON briefly to activate the backlight The backlight automatically turns off after 5 seconds If batteries are too low the instrument automatically disables the backlight function A repeated use of the backlight function affects the battery life EN 8 NHT VEGA 76 5 MENU GENERAL By pressing MENU the following screen will be displayed MENU GENERAL ANALYZER MEMORY RESET ANALYZER CONFIG RECORDER CONFIG CONTRAST DATE amp TIME LANGUAGE 4 Li It s not possible to enter the MENU during a recording or a Real Time Energy measurement 5 1 INITIAL SETTINGS 5 1 1 Howto adjust the contrast
54. le of screen in single Example of screen in 3 wire Example of screen in 4 wire phase system three phase system three phase system The symbols used are described in Tab 1 For eventual messages displayed see chapter 14 Following keys are enabled F1 ESC SAVE ENTER HOLD MENU START STOP only for three phase mode to display the values corresponding to the following phase to return back to METER mode see paragraph 6 1 2 to save in the instrument memory a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 24 Hien 6 2 POSITION CURRENT This function permits to display in real time the RMS value of AC DC currents the peak and Thdl value see pa
55. llowing keys are enabled F2 F1 SAVE ENTER HOLD MENU START STOP to start stop immediately a direct energy measurement The energy counters will start increasing proportionally to the active power absorbed by the load The results obtained cannot be memorized If the active power is negative the counters will not increase only for 4 wire measurement to display the following screen On the basis of the settings made as per paragraph 5 2 following screens are displayed cyclically Overall three phase values values of phase 1 phase 2 and phase 3 to save in the instrument memory a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 34 HT VEGA 76 7 STARTING A
56. mode wire three phase mode The symbols used are described in Tab 2 For eventual messages displayed see chapter 14 Following keys are enabled F1 F2 SAVE ENTER HOLD MENU START STOP to pass to HARMONIC mode see paragraph 6 2 3 to pass to WAVE mode see paragraph 6 2 4 to save in the instrument memory a record of Smp type see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 26 Hien VEGA 76 6 2 3 HARM mode By selecting the HARM mode one of the screens below will be displayed according to the settings made as per paragraph 5 2 The screens show the harmonics see paragraph 16 2 of the phase currents 27 09 00 17 35 12 27 09 00 17 35 12 E E Example of
57. n the very middle of the jaws in order to obtain the highest accuracy e A measured value remains constant if the HOLD function is active Should you notice that the measured value remains unchanged disable the HOLD function 1 4 AFTER USE e After use turn off the instrument by pressing ON OFF for a few seconds e f you expect not to use the instrument for a long time please keep to the storage instructions described at paragraph 3 4 HT VEGA 76 2 GENERAL DESCRIPTION 2 1 INTRODUCTION VEGA 76 represents a new approach to the world of electrical measurements Computer assisted instruments like this permit an easy and fast analysis of a huge quantity of data 2 2 FUNCTIONS The instrument can e display in real time the electrical parameters of single phase and three phase systems with and without neutral wire e perform a harmonic analysis of voltages and currents e perform a direct energy measurement without storing data e memorize by pressing SAVE the sampled values of the parameters present at the instrument s input by generating a Smp record inside the memory It s possible to analyze memorized data ONLY by transferring them to a PC e record simultaneously by pressing START after a proper setting RMS values of voltages currents corresponding harmonics active reactive and apparent powers power factors and cosg active reactive and apparent energies voltage anomalies voltage sags and surges
58. nventions on powers and power foachors 53 16 3 2 3 Phase 3 WIRE SYST acre cimocreiccnn nat cnctndetaa snare dnnethastwerecstmaceinateteen 54 16 4 MEASURING METHOD OUTLINES A 55 16 4 1 Integration perlods nea eo 55 16 4 2 Power factor calculations i 55 Te AFTER SALE SERVICE suciniriiricniicanizini viziare aiar 56 lle WARRANTY ella 56 17 2 SERVICE alan 56 NHT VEGA 76 1 PRECAUTIONS AND SAFETY MEASURES 1 1 GENERAL This instrument has been designed in compliance with Standard EN 61010 CAUTION For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes preceded by this symbol A When taking measurements e avoid doing that in humid or wet places make sure that humidity is within the limits indicated in section environmental conditions e avoid doing that in rooms where explosive gas combustible gas steam or excessive dust is present e keep you insulated from the object under test e do not touch exposed metal parts such as test lead ends sockets fixing objects circuits etc e avoid doing that if you notice anomalous conditions such as breakages deformations fractures leakages of battery liquid blind display etc The following symbols are used CAUTION refer to the instruction manual an improper use may damage the instrument or its components A HIGH VOLTAGE risk of electri
59. of phase 1 phase 2 phase 3 respectively Est Es1 Es2 Es3 Values of the total Apparent Energy of phase 1 phase 2 phase 3 respectively EN 48 NHT VEGA 76 16 APPENDIX 3 THEORETICAL OUTLINES 16 1 VOLTAGE ANOMALIES VOLTAGE SAG AND SURGE VEGA 76 is able to record as voltage anomalies all those rms values calculated every 10ms beyond the percentage thresholds of the Voltage Reference Vref set during the programming from 1 to 30 with step of 1 The Reference must be set to Nominal Voltage Phase to Neutral for Single Phase and 4 wire three phase system Nominal Voltage Phase to Phase for 3 wire three phase system Example1 Three Phase System 3 wire Example2 Three Phase System 4 wire Vref 400V LIM 6 LIM 10 gt Vref 230V LIM 6 LIM 10 gt High Lim 400 x 1 6 100 424 0V High Lim 230 x 1 6 100 243 08V Low Lim 400 x 1 10 100 360 Low Lim 230 x 1 10 100 207 0V The Instrument will detect Voltage Anomalies if the RMS Voltage Values calculated every 10ms are beyond the above calculated thresholds These limits remain unchanged throughout the recording period When a Voltage anomaly occurs the instrument records e The number corresponding to the phase where the anomaly occurred e The direction of the anomaly UP and DN identify respectively voltage drops sag and peaks Surge e The date and time of the beginning of the event in the f
60. omponent and other significant components of harmonic up to 750Hz or 900Hz and higher The vectorial sum of the currents in a well balanced system that feeds non linear loads may still be quite low However the sum does not eliminate all current harmonics The odd multiples of the third harmonic called TRIPLENS are added together in the neutral and can cause overheating even with balanced loads 16 2 4 Presence of harmonics consequences In general even harmonics i e the 2 4 etc do not cause problems Triple harmonics odd multiples of three are added on the neutral instead of cancelling each other thus creating a condition of overheating of the wire which is extremely dangerous Designers should take into consideration the three issues given below when designing a power distribution system that will contain harmonic current e The neutral wire must be of sufficient gauge e The distribution transformer must have an additional cooling system to continue operating at its rated capacity when not suited to the harmonics This is necessary because the harmonic current in the neutral wire of the secondary circuit circulates in the delta connected primary circuit This circulating harmonic current heats up the transformer e Phase harmonic currents are reflected on the primary circuit and continue back to the power source This can cause distortion of the voltage wave so that any power factor correction capacitors on the line can
61. or interrupted during a recording or an energy measurement Once a recording or a direct energy measurement see paragraph 6 4 2 has been started with the option PASSWORD enabled after about 3 minutes from the last pressure on keys or switch rotation it won t be sufficient to press START STOP if a recording is running or F2 if an energy measuring is running to stop the recording it will be necessary to insert the password In order to insert the password which is not changeable press the multifunction keys in the following sequence within 10 seconds F1 F4 F3 F2 In order to enable disable this option see paragraph 5 2 If a wrong password is inserted the instrument will display an error message and will repeat the request If no key is pressed after about 10 seconds the instrument returns back to the original screen EN 38 NHT VEGA 76 10 CONNECTING THE INSTRUMENT TO A PC The instrument can be connected to a PC by means of the serial cable C232NG1 supplied as a standard accessory NOTE A standard RS 232 cable will not work with VEGA 76 The available transmission speeds are the following 9600 19200 57600 default value The value of the transmission speed Baud Rate is displayed on the initial screen immediately after turning on the instrument see paragraph 2 3 The value of this parameter can be modified only with the management software For download instructions please consult the softwar
62. orm day month year hour minutes seconds hundredths of second e The duration of the event in seconds with a resolution of 10ms e The minimum or maximum value of voltage during the event 16 2 VOLTAGE AND CURRENT HARMONICS 16 2 1 Theory Any periodical non sinusoidal wave can be represented as a sum of sinusoidal waves having each a frequency that corresponds to an entire multiple of the fundamental according to the relation v t V X V sin t p 1 k 1 where Vo Average value of v t V Amplitude of the fundamental of v t Vk Amplitude of the KI harmonic of v t In the mains voltage the fundamental has a frequency of 50 Hz the second harmonic has a frequency of 100 Hz the third harmonic has a frequency of 150 Hz and so on Harmonic distortion is a constant problem and should not be confused with short events such as sags surges or fluctuations EN 49 NHT VEGA 76 LEGENDA 1 Fundamental 2 Third Harmonic 3 Distorted Waveform Effect of the sum of 2 multiple frequencies It can be noted that in 1 the index of the sigma is from 1 to the infinite What happens in reality is that a signal does not have an unlimited number of harmonics a number always exists after which the harmonics value is negligible The EN 50160 standard recommends to stop the index in the expression 1 in correspondence of the 40 harmonic A fundamental element to detect the presence of harmonics i
63. phase and total active powers the value of the phase and total capacitive and inductive reactive powers the values of the power factors and phase and total cosg Furthermore the instrument is able to measure directly see 6 4 2 the values of the phase and total active energies and the values of the phase and total capacitive and inductive reactive energies 6 4 1 Symbols The position ENERGY has one working mode e METER This mode will be described in detail in the next paragraphs The symbols used are described below Symbol Description Pt P1 P2 P3 Values of the total active power of phase 1 phase 2 phase 3 respectively P12 P32 only for 3 wire measurement Value of the power measured by the Wattmeter 1 2 and 3 2 respectively see paragraph 16 3 2 Qt Q1 Q2 Q3 Values of the total reactive power of phase 1 phase 2 phase 3 respectively Q12 Q32 only for 3 wire measurement Value of the power measured by the VARmeter 1 2 and 3 2 respectively see paragraph 16 3 2 St 1 S2 3 Values of the total apparent power of phase 1 phase 2 phase 3 respectively 12 S32 only for 3 wire measurement Value of the power measured by the VAmeter 1 2 and 3 2 respectively see paragraph 16 3 2 Eat Eat Ea2 Ea3 Values of the total active energy of phase 1 phase 2 phase 3 respectively Erit Erit Eri2 Er Values of the total inductive reactive Energy of phase 1 phase 2 phase 3 respectively
64. played see chapter 14 Following keys are enabled e F2 to pass to WAVE mode see paragraph 6 3 3 e Fi only for three phase measurement to display the previous or the following screen On the basis of the settings made as per paragraph 5 2 following screens are displayed cyclically e Three phase 3 wire total three phase values Wattmeter phases 1 2 and 2 3 values Peak Demand e Three phase 4 wire total three phase values phasel phase2 and phase3 values Peak Demand e SAVE to save in the instrument memory a record of Smp type see paragraph 5 4 and the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording e ENTER HOLD to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement e MENU to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement e START STOP to record selected parameters according to the instrument s settings see chapter 7 EN 30 NHT VEGA 76 6 3 2 1 Peak energy demand In three phase systems by selecting P
65. ply is not connected after about 5 minutes from the last pressure on keys or selector rotation the instrument automatically turns off AUTOPOWER OFF procedure e lf the instrument is recording or is measuring energy and the external power supply is not connected after about 5 minutes from the last pressure on keys or selector rotation the instrument starts a special procedure to save batteries ECONOMY MODE the instrument keeps recording but the display is turned off Before starting a recording the operator should first evaluate the state of the equipment decide what to record and set the instrument accordingly In order to facilitate this task we have decided to supply the instrument pre set with a general configuration which should fit most cases EN 35 Aw VEGA 76 The chosen configuration is the following e ANALYZER CONFIG Frequency 50Hz Full scale of the clamps 1000A Transforming ratio of voltmetric transformers 1 Clamp Type FLEX Type of electrical equipment 4 wire Password enabled e RECORDER CONFIG Start Manual the recording is started 1 minute after pressing the START STOP key Stop Manual Integration period 15min Recording of harmonics ON Recording of Voltage anomalies voltage Sag and Surge ON Voltage Reference for Sag and Surge detection 230V Upper Limit for Sag and Surge detection 6 Lower Limit for Sag and Surge detection 10 Selected voltages V1 V2 V3 Selected voltage harmon
66. r More than 38 parameters with CO GENERATION Flag enabled Too many record The quantity of recorded data Smp exceeds the Cancel some recordings after transferring maximum allowed 35 them to a PC ERR SEQ The Phase Sequence isn t correct Check the Phase Sequence connection ERR P The active powers shown on the right side of the message If there isnt a situation of co generation are negative check ifthe clamps are properly connected ERR SEQ amp P The active powers shown on the right side of the message If there isn t a situation of co generation are negative and the Phase Sequence isn t correct check if the clamps are properly connected check the Phase Sequence connection ERR CONNECTION The instrument has detected a wrong connection to Voltage inputs Check the Voltage connections Error Vref The user set a Voltage reference not compatible with Check Voltage Reference set in CONFIG voltage atinstument s input RECORDER Errorl Error 5 The instrument memory is damaged Contact your dealer for assistance EN 47 Hien VEGA 76 15 APPENDIX 2 RECORDABLE PARAMETERS SYMBOLS Symbol Description V1 V2 V3 RMS value of the voltage of phase 1 phase 2 phase 3 respectively V12 V23 V31 Value of phase to phase voltages 11 12 13 RMS value of the current of phase 1 phase 2 phase 3 respectively IN RMS value of the current of the n
67. ragraph 16 2 of the 3 phase currents the waveform and the harmonic spectrum of the 3 phase currents VEGA 76 6 2 1 Symbols The CURRENT position has three working modes e METER e WAVE e HARM These modes will be described in detail in the next paragraphs The symbols used are described below Symbol Description 11 12 13 RMS value of the current of phase 1 phase 2 phase 3 respectively IN RMS value of the current on the neutral Ipk1 IpK2 Ipk3 Peak value of the current of phase 1 phase 2 phase 3 respectively h01 h49 Harmonic 01 harmonic 49 Thdl Total harmonic distortion factor of the current see paragraph 16 2 freq Network frequency Tab 2 Symbols used in the position CURRENT EN 25 Hien VEGA 76 6 2 2 METER mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the screens below according to the settings made as per paragraph 5 2 27 09 00 E 27 09 00 E 27 09 00 17535212 SINGLE PHASE CURRENT CURRENT CURRENT Il 30 21 A Il 30 21 A Il 30 21 A I2 23 53 A I2 23 53 A Ipkl 49 53 A I3 23 06 A I3 23 06 A ThdI 23 06 freq 50 0 Hz IN 8 4 A freq 50 0 Hz freq 50 0 Hz HARM WAVE HARM WAVE HARM WAVE Example of screen in Example of screen in 3 Example of screen in 4 single phase mode wire three phase
68. rsor on the desired language and press ENTER to SAVE the change or ESC to quit the modification This setting will remain unchanged also after turning off the instrument EN 9 NHT VEGA 76 5 2 BASIC SETTING ANALYZER CONFIG By selecting ANALYZER CONFIG and pressing ENTER the following screen will be displayed ANALYZER CONFIG SYSTEM EE FREQUENCY 50HZ CURRENT RANGE 1000A CLAMP TYPE STD TV RATIO 0001 PASSWORD ON 4 T This page of settings can be confirmed by pressing ENTER or cancelled by pressing ESC 5 2 1 Howto set the type of electrical system under test This parameter permits to select the type of electrical system under test among the following configurations e SINGLE single phase system e 3PH3W 3 wire system three phase system without neutral see paragraph 16 3 2 e 3PH4W 4 wire system three phase system with neutral The connections to the instrument inputs will have to be in accordance with the type of system selected Position the cursor on the corresponding word by pressing the multifunction keys F1 and F2 and set the desired value by pressing the multifunction keys F3 and FA 5 2 2 How to set the fundamental frequency Position the cursor on the corresponding word by pressing the multifunction keys F1 and F2 and select the network frequency between the possible values 50Hz and 60Hz by pressing the multifunction keys F3 and F4 This parameter is important ONLY if the
69. s ENTER to confirm the settings and pass to the following page Press ESC to leave this page without modifying the existing parameters From this page you can enter the sub page Harmonics which permits to select the current harmonics to be recorded Press ENTER to confirm the settings and leave the Menu Harmonics Press ESC to leave the Menu Harmonics without modifying the existing parameters v 4 page Menu composed of two sub pages dedicated to the selection of the POWERS and ENERGIES to be recorded From this page you can enter the sub page POWER and ENERGY which permits to select the parameters to be recorded By selecting the active powers for the recording the corresponding active energies will be automatically selected By selecting the reactive powers for the recording the corresponding reactive energies will be selected Press ENTER to confirm the settings Press ESC to leave the Menu without modifying the existing parameters The various pages of the RECORDER CONFIG can be schemed as follows EN 12 VEGA 76 Use the multifunction keys F1 F2 to positon the cursor on the desired word and use the multifunction keys F3 F4 to select deselect the desired parameter it s selected if marked in black Press ENTER to confirm and leave the Menu keeping the settings made Press ESC to leave the Menu without modifying the existing parameters RECORDER CONFIG START STOP MANU IN
70. s THD defined as This index takes all the harmonics into account The higher it is the more distorted the waveform gets 16 2 2 Limit values for harmonics EN 50160 fixes the limits for harmonic voltages which can be introduced into the network by the power supplier In normal conditions during whatever period of a week 95 if the RMS value of each harmonic voltage mediated on 10 minutes will have to be inferior than or equal to the values stated in the following table The total harmonic distortion THD of the supply voltage including all the harmonics up to 40 order must be lower than or equal to 8 Odd harmonics Even harmonics Not multiple of 3 Multiple of 3 Order h Relative voltage Max Orderh Relative voltage Max Order h Relative voltage Max 5 6 3 5 2 2 7 5 9 1 5 4 1 11 3 5 15 0 5 6 24 0 5 13 3 21 0 5 17 2 19 1 5 23 1 5 25 1 5 EN 50 NHT VEGA 76 These limits theoretically applicable only for the supplier of electric energy provide however a series of reference values within which the harmonics introduced into the network by the users must be contained 16 2 3 Presence of harmonics causes Any equipment that alters the sinusoidal wave or uses only a part of it causes distortions to the sinusoidal wave and consequently harmonics All current signals result somehow virtually distorted The most common situation is the harmonic distortion c
71. screen in single Example of screen in 3 wire phase mode or 4 wire three phase mode The symbols used are described in Tab 2 For eventual messages displayed see chapter 14 The displayed histograms represent the harmonic content of the current under test The value of the first harmonic h01 primary at 50Hz is not represented in scale along with the other harmonics in order to maximize the display of the latter In case both voltage and current are connected to the instrument inputs eventual negative values therefore represented under the horizontal axis indicate that such current harmonics are generated by the load Following keys are enabled F3 F4 F1 F2 ESC SAVE ENTER HOLD MENU START STOP to move the cursor of the selected harmonic leftwards and rightwards respectively At the same time the values relevant to the order no of the selected harmonic and to the corresponding absolute and relative values calculated on the basis of the fundamental are updated only for three phase mode to display the values of the harmonics of the other voltages available The voltage displayed is indicated above the F3 key to display the page of the harmonics h01 h24 h24 symbol or that of the harmonics h25 h49 h49 symbol to return back to METER mode see paragraph 6 2 2 to store in the instrument memory a record of Smp type see paragraph 5 4 and the instantaneous values of voltage and curr
72. see paragraph 5 4 containing the instantaneous values of voltage and current present on the instrument inputs This function is disabled during a recording to enable disable the HOLD function updating interruption of the displayed data All the previous functions remain however available When the HOLD function is enabled the word is displayed When this function is enabled it s not possible to record or take an energy measurement This function is disabled during a recording or an energy measurement to enter the MENU mode and change the instrument settings see paragraph 5 2 and 5 3 It s not possible to enter the configuration MENU during a recording or an energy measurement to record selected parameters according to the instrument s settings see chapter 7 EN 28 NHT VEGA 76 6 3 POSITION POWER This function permits to display in real time the RMS value of AC DC voltage the peak and ThdV value of the 3 phase voltages the waveform of the 3 phase voltages the RMS value of AC DC currents the peak and Thdl of the 3 phase currents the waveform of the 3 phase currents Furthermore the instrument calculates and displays the value of the phase and total active powers the value of the phase and total reactive and capacitive powers the value of the phase and total power factors and coso 6 3 1 Symbols The position POWER has two working modes e METER e WAVE For voltage and current harmonics see paragraphs 6 1
73. seword 11 5 3 BASIC SETTING RECORDER CONFIG eeeeeeeeeeeee eee eeeeeeeeeneeeeeeeeeeeeeeeeeee 12 Sd ANALVZER MEMORY EEN 19 3 TREE WE 20 6 sf TAL REIH 21 6 1 POSITION VOLTAGE ceca 21 GE EN SI ai 21 bili METER 00 6 gt nee i 22 Gels HARM REENEN EE 23 Ble WAVE EE 24 6 2 POSITION CURRENT ssivcsevencsencnerencvensnaveranercnaneniondedsauenenasanienenentnerentsensveneraneninds 25 Sl oblio 25 6 2 2 METER le EE 26 6 2 3 PARM mode EE 27 6 24 WAVE EN 28 6 3 POSITION POWER ee 29 il SMP ei 29 GE OR ER nn 30 6 3 2 1 Peak energy demand 31 556 80 IO 0 sisareen a a aa 32 NHT VEGA 76 6 4 POSITION ENERGY ccleaner aiar 33 SAI E nee EE 33 6 4 2 METER MOI liana 34 7 STARTING A RECORDING wiisisis dossistatsasistadsendasaccaststntnansntadsassetnanncduduantadussteanseaadsansates 35 8 DURING A RECORDING Lai 37 9 STOPPING A RECORDING OR AN ENERGY MEASUREMENT 38 10 CONNECTING THE INSTRUMENT TO A PC ssssaannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnne 39 11 MEASURING BROCGEDURER usgeeegugeueueuegeeeEuEENENEVENKSESKSEEEENKENEKENEESSEEEEEENKENEKENEN 40 11 1 USING THE INSTRUMENT IN A SINGLE PHASE SYSTEM oseese 40 11 2 USING THE INSTRUMENT IN A THREE PHASE 4 WIRE GyVGIEM 41 11 3 USING THE INSTRUMENT IN A THREE PHASE 3 WIRE GVGIEM 42 12 MAINTENANCE Lilla 43 12l CEREA 43 12 2 BATTERY REPLACEMENT co 43 les GLEANIN Gelo ani ii iaia aio 43 13 TECHN
74. sing damages in transit e Repairs made necessary by previous attempts for repair carried out by non skilled or unauthorized personnel e Instruments for whatever reason modified by the customer himself without explicit authorization of our Technical Dept The contents of this manual may not be reproduced in any form whatsoever without the manufacturer s authorization Our products are patented and our logotypes registered We reserve the right to modify specifications and prices in view of technological improvements or developments which might be necessary 17 2 SERVICE Shouldn t the instrument work properly before contacting your distributor make sure that batteries are correctly installed and working check the test leads and replace them if necessary Make sure that your operating procedure corresponds to the one described in this manual Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it Do not forget to enclose a report describing the reasons for returning detected fault Use only original packaging Any damage occurred in transit due to non original packaging will be charged anyhow to the customer The manufacturer will not be responsible for any damage to persons or things EN 56 OLHEOOOSNINVA ITALIA Via Righi 126 48018 Faenza RA Italy Tel 39 0546 621002 4 linee r a Fax 39 0546
75. the reactive power in that moment The power factor inductive or capacitive positive or negative is defined in the panel and therefore acquires the value of the power factor in that moment The active power positive or negative or the reactive power inductive or capacitive positive or negative is NOT defined in the panel and therefore acquires a null value The power factor inductive or capacitive positive or negative is NOT defined in the panel 16 3 2 3 Phase 3 Wire System In the electrical systems distributed without neutral the phase voltages and the power factors and phase cosg lose importance Only the phase to phase voltages the phase currents and the total powers remain defined Phase 1 wie ear 12 Three phase Phase 2 e equipment Phase 3 l wa A nea In this case the potential of one of the three phases for example phase 2 is taken on as reference potential The total values of the active reactive and apparent power are expressed as sum of the indications of the couples of Wattmeters VARmeters and VAmeters Pror Wi 2 W3 2 Stor Wiz W3_5 F VAR gt VAR3_5 y EN 54 HT VEGA 76 16 4 MEASURING METHOD OUTLINES The instrument is able to measure voltages currents active powers inductive and capacitive reactive powers apparent powers inductive and capacitive power factors analogue or impulse parameters All these parameters are analyzed in a digital way for ea
76. tion period on the medium value of the corresponding powers independently on the fact that they must be registered or not Besides for a better analysis of the type of load present on the line and in order to have terms of comparison when studying the invoicing of the low cosg the values of inductive and capacitive cos are treated as independent parameters EN 55 NHT VEGA 76 17 AFTER SALE SERVICE 17 1 WARRANTY This instrument is guaranteed against material or production defects in accordance with our general sales conditions During the warranty period the manufacturer reserves the right to decide either to repair or replace the product Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it Do not forget to enclose a report describing the reasons for returning detected fault Use only original packaging Any damage occurred in transit due to non original packaging will be charged anyhow to the customer The manufacturer will not be responsible for any damage to persons or things The warranty doesn t apply to e Accessories and batteries not covered by warranty e Repairs made necessary by improper use including adaptation to particular applications not foreseen in the instructions manual or improper combination with incompatible accessories or equipment e Repairs made necessary by improper shipping material cau
77. working modes e METER e WAVE e HARM These modes will be described in detail in the next paragraphs The used symbols are described below Aa Symbol Description V1 V2 V3 RMS value of the voltage of phase 1 phase 2 phase 3 respectively V12 V23 or V32 V31 RMS Value of the phase to phase voltages Vpk1 Vpk2 Vpk3 Peak value of the voltage of phase 1 phase 2 phase 3 and of the phase to phase Vpk12 Vpk32 voltage 12 and 32 respectively h01 h49 Harmonic 01 Harmonic 49 ThdV Factor of total harmonic distortion of the voltage see paragraph 16 2 freq Network frequency Phseq Phase sequence indicator 123 correct 132 inverted 023 null voltage on the black wire 103 null voltage on the red wire 120 null voltage on the blue wire 100 null voltages on the red and blue wires 020 null voltages on the black and blue wires 003 null voltages on the black and red wires Tab 1 Symbols used in the position VOLTAGE EN 21 Hien VEGA 76 6 1 2 METER mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5 2 27 09 00 LES 27 09 00 E 27 09 00 1735212 SINGLE PHASE VOLTAGE VOLTAGE VOLTAGE V12 384 2 V VI 230 2 V VI 230 2 V v32 385 4 V v2 230 5 V Vpkl 3

VEGA 76 - El-forsyninganalysator

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