Home

QNA-202

1. m CIRCUTOR ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 C d 771101 771102 771103 USER S MANUAL M 981 551 01 E c CIRCUTOR S A ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 1 MANUAL CONTENTS page T SBANSICSINSTRU UGT Qaa ior cupo 3 1 1 Checking the contents of your 3 1 2 ONAs202 models re ro e t DIR o t LE aet oa REESE 3 1 3 Safety warnings 4 1 4 Operation Instr 4 25 MAIN FEATURES mm 5 21 5 Basic ties ecc os 5 2 2 Electrical features 6 as JANALYSISMODE Senan a A ea p EE Et 7 3 1 Measured and calculated parameters 4 wire connection 7 3 1 1 Instantaneous values L1 L2 amp 3 7 3 1 2 Instantaneous three phase 5 8 3 2 Measured and calculated parameters delta connection 9 3 2 1 5 Instantaneous values L1 L2 amp L3 rn items 9 3 2 2 Instantaneous three phase values sse 10 4 DATA COLLECTION IN MEMORY AUTOMATIC 10 52 INSTALLATION amp STARTUP Dalec eei ceps 11 5 1 Selecting the connection 11 5 1
2. The QNA also records in memory an events file into which any possible incident in the own QNA or in the monitored line will be saved Power ON OFF voltage loss at any phase Setup modification memory erasure change of the time of the on board clock ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 11 5 INSTALLATION amp STARTUP The manual you hold in your hands contains information and warnings that the user should respect in order to guarantee a proper operation of all the instrument functions and keep its safety conditions If the instrument is not used as manufacturer s specifications the protection of the instrument can be damaged Notice that with the instrument powered on the terminals could be dangerous to touching and cover opening actions or elements removal may allow the access to dangerous parts When any protection failure is suspected to exist for example it presents external visible damages the instrument must be immediately powered OFF In this case contact a qualified service representative 5 1 Selecting the connection mode The QNA is a fully user configurable instrument in terms of the kind of network to be monitored and the supply voltage of the analyzer The QNA can be indistinctly installed in a three phase distribution line with neutral conductor 4 wires or without neutral conductor 3 wires The choice of the voltage supply and the connection mode is carried o
3. The connection of the earthing terminal to the system earth is essential to assure the efficiency of QNA protective elements ANALY7ER OF THE OUALITY OF ELECTRIC POWER SUPPLY 202 Current connector 1 L2 L3 QNA PIN Description 1 1A input 2 Common 3 5 A input RS 232 RS 485 communication connector QNA PIN Description 1 RX RS 232 2 CTS RS 232 3 TX RS 232 4 RTS RS 232 5 DSR RS 232 6 GND RS 232 7 RX RS 485 8 TX RS 485 9 GND 5 485 Page 14 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 15 5 3 Starting the QNA analyzer up Before powering the analyzer on please check following points 1 Supply voltage 230 V 40 40 96 50 60 Hz 400 V 40 40 96 50 60 Hz This choice depends on the position of the inner bridge 2 Earthing terminal The earthing terminal of the analyzer must be connected to earth The lack of this connection implies the inefficiency of some instrument protective elements 3 Maximum voltage in the voltage measuring circuit 4 wire arrangement 500 V line to neutral 866 V line to line 3 wire arrangement 500 V line to line 4 Analyzer burden 6 VA 5 Working conditions e Working temperature range 0 SC to 50 C Working humidity 25 to 75 95 6 Safety Designed to meet protection class as per EN 61010 7 M
4. 1 Selecting the connection mode 3 wires 4 wires 12 5 1 2 Selecting the supply voltage 12 5 2 Connection cables oreste e eet 13 5 Starting the QNA analyzer up E eR e RE x Ehe 15 5 4 Connection diagrams of the QNA 16 5 4 TE Direct connection aote ea i Ard rA D A LEA 16 5 4 2 Through voltage 19 5 5 On board battery of the QNA 22 6 SETTING THE GNA UR rt COO as a oe Qaae 22 6 1 Operation setup of the QNA 23 6 1 1 Tratisforimallo dallOSts n ob 23 6 1 2 Features of the monitored electrical network 23 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 2 6 1 3 Data collection process 24 6 1 4 Statistical processing Ete x adir 25 6 1 5 Quality parameters 2 2 Masai aseeat abana 26 6 1 6 Setting recording conditions 26 6 2 Choosing the parameters to be recorded 27 6 21 Stand
5. 1 3 2 7 3 2 4 8 5 4 6 5 e Cable for RS 485 communication RS 485 converter QNA QNA PIN FEMALE DB9 7 2 8 1 9 5 The QNA RS 232 can be communicated to a PC via an external modem This system can be applied in these facilities for which a communication via the conventional phone line is wanted to be set The communication cable to be used in these cases is different and also the modem unit must be set to have no control of the DTR and to automatically hold the line on when a call is received Consult the user s guide of the modem to be used for any particular application e Communication cable for an external modem application QNA 303 PIN MALE DB25 MALE DB9 2 8 3 7 4 6 5 Go ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 37 7 TECHNICAL SPECIFICATIONS Power supply Supply voltage Independent from the measuring circuit 230 or 400 V 40 95 Frequency 50 60 Hz Burden 6 VA Working temperature 10 50 Auxiliary power supply Battery Ni M H Autonomy 4 h of continuous operation Voltage measurement Measuring system 3 wires or 4 wires arrangement choice by inner connection Measuring range 0 to 500 V line to neutral 4 wire network 0 to 500 V line to neutral 0 to 866 V line to line 3 wire network 0 to 500 V line to line Scale switch Aut
6. 1997 Residential immunity EN 61000 4 5 1995 Surges EN 61000 4 11 1994 Dips Supply voltage interruptions ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 39 8 SAFETY CONSIDERATIONS The user should take into account all installation instructions indicated in sections INSTALLATION amp STARTUP and TECHNICAL SPECIFICATIONS of this manual Notice that with the instrument powered on the terminals could be dangerous to touching and cover opening or elements removal actions may allow the access to dangerous parts The analyzer has been designed and tested to meet IEC 348 standard and is factory shipped in proper operating conditions 9 MAINTENANCE The QNA does not require any special maintenance No adjustment maintenance or repairing action should be done over the instrument open and powered and should those actions are essential high qualified operators must perform them Before any adjustment replacement maintenance or repairing operation is carried out the instrument must be totally disconnected from any power supply source When any protection failure is suspected to exist the instrument must be immediately put our of service The instrument s design allows a quick replacement in case of any failure 10 TECHNICAL SERVICE For any inquiry about the instrument performance or If any failure happens please contact to CIRCUTOR s technical service CIRCUTOR S A After sales
7. TETES IrmsxUrms REACTIVE POWER of every phase Q4 inductive and capacitive _1 u xi t a 2 y T 43 Value measured from the current signal shifted by 90 with respect to the voltage signal FREQUENCY F Hz This is measured over the L1 phase voltage ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 10 3 2 2 Instantaneous three phase values Average VOLTAGE from the three phases _ Vrmsl Vrms2 Vrms3 3 Vm CURRENT of every phase R M S value h l2 _ Irms1 Irms2 Irms3 3 Im Total three phase ACTIVE POWER Pt 1 2 Three phase POWER FACTOR Pt 1 2 PEm I St IrmslxVrmsl Ims2xVrms2 Ims3 x Vrms3 Total three phase REACTIVE POWER inductive and capacitive Ot 01 02 ENERGY ACTIVE kWh REACTIVE inductive kvarLh REACTIVE capacitive kvarCh 4 DATA COLLECTION IN MEMORY AUTOMATIC MODE The QNA is equipped with an internal clock for both date and time that permits setting the automatic data recording process in memory available capacity according to the model at regular time periods The choice of the recording period and the need of this action will depend on the previously programmed parameters Parameters to be saved into memory are user programmable so that the analyzer versatility is enhanced and the number of registers that can be stored is also increased
8. as of main electrical parameters in 4 quadrants energy generation and consumption Measured and calculated data are periodically saved into that memory at user defined time intervals selectable from 1 s to 4 hours for a further retrieval from a PC The QNA also records an events file in which any possible incident is stored Power ON OFF voltage loss at any phase Setup modification memory erasure change of the time of the on board clock 2 2 Electrical features The application of the QNA as a recording instrument for the evaluation of the quality of the electrical power supply implies the need that this analyzer must deliver a high protection degree against severe electrical conditions e Protective devices in voltage inputs Special type fuses able to withstand short term pulses which considerably increases the instrument efficiency e High energy varistors for the absorption of surges in order to avoid possible costly repairs e Noise filters in voltage and current inputs to assure reliable measurements even under most adverse operation conditions e Power supply transformers with an over power dissipation and insulation e Power supply by built in battery to assure a voltage supply to the QNA in case of voltage loss failure e Insulation transformers to guarantee the proper insulation of inputs e Enclosure The case made of aluminium casting provides a great mechanical toughness but also an exceptional shield
9. 0 9 positive energy 9 negative energy 9 negative energy 9 negative energy Read of all instantaneous 00RAL 00 long parameters 30 hexascii parameters Current units hexascii char Power units hexascii char The arrangement of parameters in the RAL command is as follows 30 x 8 bytes in hexa ASCII format according to above attached order M Current 2 bytes current units 00 01 2 bytes power units 00 W 01 kW Power factor x 100 If capacitive then 200 are added Note Quality voltage equals the value of the voltage used for the event monitoring Energy voltage equals the value of the voltage used for the energy recording Samples taken for this analysis are lower than for the event monitoring due to the great number of calculations which are required ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 34 Both values can be sometimes be different when an event has occurred due to the accuracy difference 6 5 3 File managing commands COM CONCEPT QUESTION ANSWER MAND Number files 00 Directory of in Los NN 12 file ext memory 5 File number 7 bytes no 17 date of file creation Delete a file om 00FILE NOT FOUND 12 file ext 00ERR 00ACK Consult a file content 00DIF 00 12 file ext 12 file ext 17 beginning date 17 ending date 6 Bytes no ASCII FOR Format memory 00
10. FOR 00ACK 00ERR SZC Ask for a file 00 17 beginning date ile 17 ending date gt the QNA starts data transference in ZMODEM 00ERRO01 gt File does not exist Ask for a part of a file 00SZP 00ACK gt the QNA starts data 12 file ext transference in ZMODEM 17 beginning date 17 ending date 00ERROO gt QNA in Setup menu 00ERR gt File does not exist or beginning date gt ending date Note Date format is DD MM YY hh mm ss with a length of 17 bytes ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 35 6 6 Connections of communication cables RS 232 485 Antena Radio GSM The QNA analyzer is equipped with a RS communication port to set the communication to the PC The connection arrangement will depend on the communication mode to be used Several communication modes are available according to the QNA model GSM 485 232 QNA GSM X X QNA 232 485 X X QNA units that require a communication cable are only those which will communicate via the RS 232 or RS 485 serial port to the PC A simultaneous communication via both protocols will not be available at any case The protocol to be used in QNA RS 232 RS 485 units will depend on the cable connection arrangement RS 232 485 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 36 e Cable for RS 232 communication PC QNA QNA PIN FEMALE DB9
11. THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 25 6 1 4 Statistical processing Confidence level for the voltage 96 For each record the analyzer saves in memory a maximum and minimum voltage value within a pre defined confidence interval The confidence level expressed in percentage indicates the percentage of measures which must be considered for analysis purposes inside the confidence interval by neglecting extreme values For instance if a confidence level of 95 96 is set then the 2 5 of lowest values and the 2 5 of highest values would be neglected Inside the interval the maximum and minimum values are obtained and recorded If the user want to record the maximum and minimum values taking into account all measurements absolute values then a confidence level of 100 should be set Vms histogram Userconfigurable between 51 and 100 V threshold V threshold gt m D Confidence level for the frequency An analogue processing performed by the QNA 202 over the voltage can be optionally applied over the frequency If the user want to record the absolute maximum and minimum values then a confidence level of 100 should be set Hz histogram Userconfigurables between 51 and 100 Hz threshold Ho threshold gt ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 26 6 1 5 Quality parameters of voltage dip The detecti
12. TRIC POWER SUPPLY QNA 202 Page 32 6 5 Commands 6 5 1 Setup commands COM CONCEPT QUESTION ANSWER MAND VER Read QNA version 00 4 digits INI Reset 00ACK RCL Read date 00XX XX XX XX XX XX XX20CXX 00ERR RRT Read transformation 00 00 6 Primary U ratios 3 Secondary U 5 Primary 1 Secondary 1 O IIl fase 1 Aron 1 0 3 wire 1 4 wire Write transformation 00WRT 6 Primary U 3 Secondary U 5 Primary 1 Secondary 1 O IIl fase 1 Aron 1 0 3 wire 1 4 wire communication 00 00 2 Peripheral number parameters Parity Data length Stop bits 4 Baud rate 4 Baud rate COM2 No used Write communication 00WRS parameters 2 Peripheral number Parity Data length Stop bits 4 Baud rate 4 baud rate COM2 and file name 8 File name Write recording period 00ACK and file name 5 Recording period 8 File name CLEP Reset to zero of Positive 900CLEP Energy counters CLEN Reset to zero of Negative 00CLEN Energy counters 00 4 OFF ti Read battery OFF time OORTD OFF time WTD Read battery OFF time 00WTD 00ACK ch 4 OFF time ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 33 6 5 2 Commands for parameter readout CONCEPT QUESTION ANSWER Read voltage quality 00RVQ 00 9 x 3 ascii char RWH Read active energy 00RWH 0
13. against external electromagnetic fields which might appear in extreme situations Logical and measuring boards are placed inside a separated zone which even increases the screening of sensitive components by Faraday s cage effect ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 7 3 ANALYSIS MODES QNA series analyzers can perform under different operation modes according to the previous setting Most remarkable operation settings are these following e Measurement and collection in memory of main electrical parameters from any power distribution system e Selection of electrical parameters to be saved into memory e Ability of setting a data recording threshold so that values are saved in memory only when values exceed or lower limits of the user defined threshold e Setting of a voltage threshold to define diverse event occurrences Quality voltage sags line interruptions 3 1 Measured and calculated parameters 4 wire connection 3 1 1 Instantaneous values L1 L2 amp L3 Line to neutral VOLTAGE of every phase R M S value Vi Vo Vs 1 1 Vn Vrms u t dt Vrms Uy N CURRENT of every phase R M S value h lo la 1 J 2 1 N In Irms i t dt Irms i t x 10 ACTIVE POWER of every phase P2 Pa 1 u t i t dt u i POWER FACTOR of every phase PF y PFs PFn Irms Vr
14. als If the value of this parameter is 1 then it means that all semicycles with voltage dip occurrences have consecutively happened Integrated Hz This parameters equals the value of the frequency obtained after the measurement by the application of the user defined time constant which have been defined in section 6 1 4 Integrated V This parameter equals the value of the voltage obtained after the measurement by the application of the user defined time constant which have been defined in section 6 1 4 96 of voltage quality The percentage of time during which the average value keeps within admissible voltage limits These limits are set in section 6 1 4 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 30 6 3 Events file The analyzer also records and events file that contains information on the occurrence moment duration and minimum voltage of any incidence happening These incidences are following Power On Indication of the moment when the QNA is turn on This moment matches the moment when the instrument is powered on Power OFF Indication of the moment when the QNA is turn OFF This moment will depend on the period of time defined by the user for an operation with a power supply by the internal battery or also if any power supply loss occurs Setup modification Record of the moment when any modification of the instrument Setup is realized Memory format Indication of the moment when the use
15. ard tile STD s node db s ian E HE M Reto 27 2 EVENS aoc ote a Na cn ic ena ads a un tre Lu 30 ONA COMBMUNICATIONS 31 6 4 Demand TOK ANAL sows EE 31 6 9 G0MMmMaANd Ga o LER Ue uL ES Um ux eo unis e Yada tussles ead 32 6 5 1 Setup Comilaltits 32 6 5 2 Commands for parameter 33 6 5 3 File managing eodein eo n b b REA ted 34 6 6 Connections of communication cables 35 7 VEGHNIGAL SPEGIFICATIONS iii our dre wee TROP EROR ELLO 37 8 SAFETY GONSIDERATIONS 39 9o MAINTENANCE 39 10 gt TECHNICAL SERVICE Maxx rti pica ane bx ra m Eee x 39 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 3 1 BASIC INSTRUCTIONS This manual is aimed to familiarize the user with the operation of the power supply quality analyzer model QNA in order to get the best from its features QNA analyzers have been built with components incorporating the most advanced technology in microelectronics and offer benchtop features for the market in terms of measuring and recording of electrical magnitudes in industrial power supply networks You are kindly requested to carefully read this manual before connecting and powering the analyzer in order to avoid irrev
16. aximum measurable current according to the applied Points to check during the installation process 8 Verify that the earthing terminal of the ONA is connected to the earth in order to avoid possible interferences over the analyzer to occur If this earthing terminal is not connected then the efficiency of the QNA protection elements would be reduced 9 Assure that the applied C T s have been installed in the right phase in terms of the correspondence of every current and voltage phase 10 Respect the polarity and connection mode of the applied C T s 11 Verify the QNA setup 12 Respect the connection modes shown at each following attached diagrams to correctly achieve powers PF and energies readouts ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 16 5 4 Connection diagrams of the QNA analyzer 5 4 1 Direct connection 5 4 1 1 Connection diagram for L V 4 wire power systems P1 P2 1 12 Si 52 1 2 L3 N Voltage connection terminal U L1 L2 L3 n CIRCUTOR Q 6 Supply Uai Current connection terminal L1 L2 L3 QNA Pin Description 3 S S m uis Input 5A E RS 232 485 Antena Radio GSM nput 1A ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 17 5 4 1 2 Connection diagram for 3 wire power systems
17. d the instrument setting actions This protocol is specially designed for the transmission via modem links Main features of this protocol are following Full Duplex protocol which gets the maximum efficiency from the link Automatic adaptation of the baud rate to the phone line quality Automatic adaptation of frame length Complete system of error detection and correction The communication is not cut off in case of punctual errors in frames but the system tries for several times to resend the same information until the verification of a complete communication interruption The application of this protocol assures to get optimum data transmission times with a minimum number of incidences 6 4 Demand format PROTOCOL Question Answer The demand format is ch LF example 00VER71 The answer format is PPAA ch LF Any message starts with this symbol ASCII 36 The identification code 00 for the portable QNA decimal ASCII COMMAND PRZ Check sum of all the elements forming the message It is calculated by the decimal addition of all the previous bytes in ASCII and then translating the result into hexadecimal Two digits are taken example 00RAL gt 36 48 48 82 65 76 355 355 decimal 163 hexad CHECK SUM 63 gt 00RAL63 LF LINE FEED indicates the end of the message ASCII 10 CC A h ANALYZER OF THE QUALITY OF ELEC
18. delta connection Power Supply 0 230 400V Voltage connection terminal U L1 L2 L3 CIRCUTOR Q 202 6 Supply UAL2 Current connection terminal L1 L2 L3 QNA Pin EN 43 3 int 4 o ie 2 RS 232 485 Antena Radio GSM ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 18 5 4 1 3 Connection diagram for 3 wire power systems in ARON mode Power Supply 0 230 400V Voltage connection terminal U L1 L2 L3 CIRCUTOR Q 202 6 Current connection terminal L1 L2 L3 QNA Pin Talo J 43 OIOIO 3 nput A RS 232 485 Antena Radio GSM ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 19 5 4 2 Through voltage transformers 5 4 2 1 Three current transformers two voltage transformers Voltage connection terminal U L1 L2 L3 a CIRCUTOR Q 202 Supply 1 Supply UAL2 Current connection terminal L1 L2 L3 QNA Pin E es AS 1 Input 1A Y OJOJOJ 12 CH Wa RS 232 485 Antena Radio GSM ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 20 5 4 2 2 Two current transfor
19. ep the analyzer continuously energized during 4 hours in case of lack of voltage supply from the main This period of time of operation after a voltage supply loss is user programmable in order to economize the battery charge to assure the detection of possible intermittent voltage interruptions The warranty of a 4 hour operation period is essential to assure the proper detection and recording of multiple and long term voltage interruptions 6 SETTING THE QNA UP The QNA analyzer performance will depend on the user configuration of the instrument To accomplish this configuration two different setup sections can be distinguished Operation Setup To define the QNA analyzer operation mode e File Setup To define the data collection procedure of the QNA into the internal memory ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 23 6 1 Operation setup of the QNA analyzer Points to be user defined are following 6 1 1 Transformation ratios The QNA analyzer can take measurements through voltage and current transformers Voltage primary value Voltage secondary value Set the transformation ratio of voltage transformers used for measuring purposes In case of a direct measurement of the voltage no voltage transformer used then just set 1 1 Current primary value Current secondary value The measuring of current by the QNA analyzer can be effectuated through either 5 A or Set at t
20. ersible damage which might be caused by an improper connection 1 1 Checking the contents of your package After receiving the analyzer please check the following points a The delivered material meets your order specifications b After unpacking check that the instrument has not been damaged in transit c The standard set includes the following items 3 female 4 pin connectors 1 female 7 pin connector 1 female 9 pin connector 1 female DB9 connector 1 User s guide for the 1 User s guide for the Software 1 CD containing the software for PC 1 GSM antenna only for the GSM model 1 2 QNA 202 models Code Model 771101 QNA RS 232 RS 485 771103 QNA GSM Free SIM not included ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 4 1 3 Safety warnings The manual you hold in your hands contains information and warnings about the QNA that the user should respect in order to guarantee a proper operation of all the instrument functions and keep its safety conditions If the instrument is not used as manufacturer s specifications the protection of the instrument can be damaged When any protection failure is suspected to exist for example it presents external visible damages the instrument must be immediately powered OFF In this case contact a qualified service representative 1 4 Operation instructions The QNA is a programmable instrume
21. es The QNA series analyzer is an instrument specially designed for the analysis of the electric network quality for that reason all inputs for voltage and current signals are isolated by means of transformers Moreover the great variety of available models makes the QNA suitable for any situation and communication mode The inner battery of the instrument assures the continuity of the measuring process in case of any supply voltage loss event short or long term line interruption The standard analyzer is equipped with three A C voltage inputs and three A C current inputs through current transformers which permit a simultaneous measurement of voltage and current from all three phases together with the frequency in any power system By means of an internal microprocessor the instrument calculates the rest of main electrical parameters such as the power factor active power inductive or capacitive reactive power of the three phases as well as the active and reactive inductive and capacitive energies ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 6 To perform the analysis of the quality of the electric network the QNA will analyze all cycles from all three voltage phases to detect the occurrence of any event voltage dips short and long line interruptions QNA analyzers are equipped with on board memory 1 Mb or 3 Mb according to the model for the collection of quality parameters as well
22. his point the transformation ratio of C T s used for measuring purposes Check that the C T secondary circuit is connected to the right current signal input since different inputs are provided for 1A or 6 1 2 Features of the monitored electrical network Rated voltage The rated voltage of the power system to be monitored by the When the measurement is direct that is no voltage transformer is used then this voltage matches the network rated voltage lf any 110 V voltage transformer is used then the rated voltage to be set results from the application over the network rated voltage of the transformation ratio A right configuration of this point is essential since permits setting the limits for the analysis of power supply quality Rated frequency The rated frequency of the power system to be monitored by the QNA This parameter is necessary for the calculation of the signal R M S value in extreme quality networks Circuit type When the measurement is done through three current probes then the analyzer must be set to work with a three phase circuit In the case of 3 wire networks that is networks without neutral conductor the analyzer can be set to work in ARON system so that only two current probes are required Measurement type The QNA must be set according to the distribution system to be monitored whether with neutral conductor 4 wires or without neutral conductor 3 wires A proper setting of thi
23. in the PC software since both settings must always fully coincide 4 wire configuration 3 wire configuration gs C Connector position Connector position Up Down 8 N a Lo 5 Connector position 5 Connector position Up 41 ETSE Down J4 5 1 2 Selecting the supply voltage The supply voltage of the QNA for any particular application can be selected by means of an inner bridge placed inside the QNA casing First of all assure that the QNA is completely disconnected from the monitored main both power supply and measuring circuits and then remove the frontal cover of the QNA Check that the position of the bridge agrees with the desired voltage supply Power supply Power supply 230 V 400 V Vite Connector position Connector position Up Down ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 13 5 2 Connection cables RS 232 485 Antena Radio GSM Voltage connector U L1 L2 L3 QNA PIN Description 1 Voltage 1 2 Voltage UL3 3 Voltage UL2 4 Earthing terminal ET Neutral 6 Supply UAL1 7 Supply UAL2 Note This connection is not required when the monitored distribution system has no neutral conductor
24. into memory If the trigger conditions are disabled then values will be always saved into memory according the user defined recording period If the trigger conditions are simultaneously met at any moment within the selected recording period then average values over all the period will be saved into memory ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 27 Two types of trigger conditions are available e Time trigger Start End date Setting of dates and times for the starting and ending actions of the recording process disable the time trigger all values must be set to zero f only START END times are set two dates set to zero then the defined recording period will be daily repeated e Level trigger Setting of a parameter to be used as a trigger condition as well as its maximum and minimum range limiting values You must here process as follows Trigger parameter Choice of the parameter to be used as the trigger condition for data recording actions Maximum Minimum trigger value Values will be saved into memory when either the instantaneous value of any of the three phases L1 L2 or L3 or the three phase value of the selected parameter is higher than the maximum or lower than the minimum set value Parameter Admissible values Vp p 0 gt 999999 Vp n 0 999999 A 0 9999999 kW 9999999 gt 9999999 kvarL 9999999 9999999 kvarC 9999999 g
25. mers two voltage transformers ARON e S1 of the is connected to earth Voltage connection terminal U L1 L2 L3 6 Current connection terminal L1 L2 L3 _4__ jJNoued j 0 230 400V Alimentaci n CIRCUTOR QNA 202 oleo RS 232 485 Antena Radio GSM ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 21 e S2 of the is connected to earth Voltage connection terminal U L1 L2 L3 if CIRCUTOR Q NA 202 Supply UAL1 Supply UAL2 Current connection terminal L1 L2 L3 QNA Pin i 6 1 Input 1A I B U L14213 RS 232 485 Antena Radio GSM ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 22 5 5 On board battery of the QNA analyzer The QNA analyzer is equipped with an intelligent energy charging system This means that the instrument continuously checks in an automatic way the status of the battery thus the charging process stops when the battery is at its maximum charge level and therefore the span life of the battery is increased When the analyzer is connected to the main the battery is self recharging The analyzer has an inner battery to assure the power supply of the analyzer when any event occurs This battery permits to ke
26. ms ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 8 REACTIVE POWER of every phase Q4 Q2 inductive and capacitive Value measured from the current signal shifted by 90 with respect to the voltage signal On u t 10 di FREQUENCY F Hz This is measured over the L1 phase voltage 3 1 2 Instantaneous three phase values Average VOLTAGE from the three phases _ Vrms1 Vrms2 Vrms3 a 3 Vm Average CURRENT from the three phases Irms Irms2 Irms3 i 3 Im Total three phase ACTIVE POWER Pt Pl4 P2 P3 Three phase POWER FACTOR 1 2 St 1051 Vrms1 Irms2 Vrms2 Irms3 Vrms3 Total three phase REACTIVE POWER inductive and capacitive Ot 01 02 03 ENERGY ACTIVE kWh REACTIVE inductive kvarLh REACTIVE capacitive kvarCh ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 9 3 2 Measured and calculated parameters 3 wires 3 2 1 Instantaneous values L1 L2 amp L3 Line to line VOLTAGE of every phase R M S value V12 V23 Vai 1 1 Vn Vrms u t dt i Vrms uy YN C CURRENT of every phase R M S value h 12 1 2 1 In Irms ilt dt Irms i 0 KO ACTIVE POWER of every phase Pa 1 u t 1 wUxi xi t dt Uc aig ee POWER FACTOR of every phase y
27. nt so offering diverse operation modes which can be selected from the available programming menus Please before initiating works with the QNA thoughtfully read the paragraphs involving INSTALLATION amp STARTUP AND SETTING THE QNA UP in order to select the most suitable operation mode for your requirements Note that with the instrument powered on the terminals could be dangerous to touching and cover opening actions or elements removal may allow the access to dangerous parts Therefore the instrument must not be used until this is completely installed ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 5 2 MAIN FEATURES The QNA network analyzer is an instrument specifically designed for the accomplishment of monitoring actions over the electric network Among their main characteristics we can remark following e High protection level against severe electrical conditions Wide range of both supply and measuring voltages High protection level against overvoltage and transient events e Connection to either 3 or 4 wire distribution systems e Inner battery which permits the instrument to go on recording works even in case of supply voltage loss e Inner memory for saving all parameters measured by the QNA e Communication via GSM RADIO RS 232 RS 485 according to the model e P 65 rated instrument High protection against adverse environmental conditions 2 1 Basic featur
28. omatic Other voltages Through voltage transformers Frequency 45 to 65 Hz Current measurement Two independent current signal inputs 0 5 0 1 Admissible overload of current circuit 1 2 I Other currents Through current transformers Accuracy Voltage 0 5 96 of readout 1 digit Current 0 5 96 of readout 1 digit Power 1 96 of readout 1 digit Measuring conditions to assure accuracy class Errors due to external voltage and current transformers not included Temperature range 5 SC to 45 Power factor 0 5 to 1 Measuring range between 5 95 and 100 96 Internal memory Memory size 1Mb 3 Mb as optional Memory configuration FIFO ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 38 Mechanical characteristics Enclosure IP 55 protection casing Weight 2 5 kg Dimensions Relevant standards EN 60664 EN 61010 EN 61036 VDE 110 UL 94 EM EMISSION EN 61000 3 2 1995 Harmonics EN 61000 3 3 1995 Voltage fluctuations EN 50081 2 1993 Industrial emission EN 55011 1994 Conducted EN 55022 Class EN 55011 1994 Radiated EN 55022 Class EM IMMUNITY EN 50082 2 1995 industrial immunity EN 61000 4 2 1995 ESD ENV 50140 1993 EM Radiated field of RF EN 61000 4 4 1995 EFT burst ENV 50141 1993 RF common mode EN 61000 4 8 1995 50 Hz H field EN 50082 1
29. on of a voltage dip depends on the value set in this point of the rated voltage Every semicycle whose R M S value is below the defined limit value is stated to be a voltage dip The analyzer will indicate the number of cycles which have not reached the defined voltage value and if these semicycles have successively occurred intervals of voltage for Power OFF event Seconds for Power OFF event We will consider as a power OFF voltage loss line interruption the voltage drop below a defined value of the rated voltage during a determined period of time These two parameters are used to define the power OFF event of correct voltage for high voltage event of correct voltage for low voltage event Two limits to define a voltage range outside from which the quality of the voltage is not correct can be also set by the user The period of time during which the voltage has kept within these defined limits is also indicated The values for these limits are defined as a of the set rated voltage of seconds N that Vrms 1s V is within thresholds 2 D t n1sn2 Trec 6 1 6 Setting recording conditions Trigger You can set certain conditions Trigger so that values are saved into memory only when these conditions are met To record values in memory the two user defined TRIGGER conditions must be simultaneously met if any condition is not met then no data will be saved
30. r has decided the QNA internal memory to be formatted Forced memory format The QNA internal memory will be automatically formatted if any error in this internal memory is detected Delete a file Indication of the moment when the user has deleted any file from the QNA internal memory If the first data shown by the EVE file is the indication that a file has been delete then this means that the deleted file was the events file Time change Indication of any change of the date or time of the analyzer s on board clock The record of this event type is quite important since when an illogical interval of time between two successive readouts are observed in the graphical representation of any parameter this might be due to a change of the time of the on board clock Voltage ON L1 Voltage ON L2 Voltage ON L3 Indication of the moment when the QNA has detected a voltage dip or a line interruption This value will depend on the configuration set in the section 6 1 5 Voltage OFF L1 Voltage OFF L2 Voltage OFF L3 Indication of the moment when the voltage of the instrument exceeds the minimum value that is the moment when the network voltage exceeds the value defined as power OFF voltage See section 6 1 5 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 31 QNA COMMUNICATIONS One of the main features of the QNA in terms of communications is the use of the Z MODEM protocol both for the data retrieval an
31. s point is essential to assure a right detection of event occurrences This choice must also match the inner bridge position See section 5 1 1 ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 24 6 1 3 Data collection process features File name Name of the file to be used for data recording not modifiable Recording period Integration period for data recording into memory of all selected parameters Average maximum and minimum values obtained along the period will be recorded Period of voltage sliding window To carry out the calculation of the average maximum and minimum voltage the QNA obtains one value each second This instantaneous value corresponds to the average of Vims values which have been calculated within the sliding window defined by the user voltage time constant If this period is set to 1 s then the instantaneous value equals the Vims value y Tim Wine Tint Im ta I fa mom Sliding Window to t Period of freguency sliding window To carry out the calculation of the average maximum and minimum freguency the ONA obtains one value each second This instantaneous value corresponds to the average of freguency values which have been calculated within the sliding window defined by the user frequency time constant If this period is set to 1 s then this value eguals the instantaneous freguency Sliding T Window ANALYZER OF
32. service Lepanto 49 08223 TERRASSA BARCELONA SPAIN Tel 34 93 745 29 00 fax 34 93 745 29 14 E mail central circutor es
33. t 9999999 PF 1 00 gt 1 00 Hz 40 0 99 9 kVA 0 9999999 6 2 Choosing the parameters to be recorded Parameters to be recorded by the QNA in its internal memory are user definable so that you can always obtain the maximum efficiency from the instrument memory capacity at each particular situation by saving only useful information maximum of 100 parameters 6 2 1 Standard file STD The standard file STD is used to store all parameters which are periodically recorded These parameters can be classified into diverse groups ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 6 2 1 1 Electrical parameters The QNA analyzer can measure electrical parameters either for situations of consumption or generation of electric power Among these parameters these strictly necessary for analyzing purposes can be chose in order to optimize the use of the QNA internal memory Page 28 Parameter Average values Maximum values Minimum values Vp p X X XX X X X Vp n X X X X X A X X X X X X X Hz x 10 X X X kVA X X X Power consumption kW X X XX X X X kvarL X X X X X X X kvarC X X X X X PF
34. ut by means of some bridges placed inside the QNA casing Please always check the position of this bridges before connecting and powering the QNA Before any adjustment operation is carried out the QNA must be completely disconnected from any power supply source s P 3 4 WIRES ig g CONNECTION T TERMINAL Bf B eg E ie p n a vz CONNECTON e lo TERMINALES Po ood ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 12 5 1 1 Selecting the connection mode 3 wires 4 wires The arrangement of the distribution system to be monitored by the QNA can be selected by means of an inner bridge placed inside the QNA casing Thus the QNA will perform the analysis of the voltage incidences according to the position of this bridge that is voltage events will be detected between phase and neutral for the 4 wire arrangement and on the other side these events will be detected over line to line voltages for the 3 wire arrangement As for the former case first of all assure that the QNA is completely disconnected from the monitored main both power supply and measuring circuits and then remove the frontal cover of the QNA Check that the position of the bridges agrees with the desired system arrangement Finally set also the selected configuration
35. x100 X X X X X X X kWh X kvarLh X kvarCh X Power generation kW X X X X X X X kvarL X X X X X X X kvarC X X X X X X X PFx100 X xX X X X X X kWh X kvarLh X kvarCh X Note When selecting the parameters to be recorded check that selected parameters are coherent with the connection arrangement 3 wire 4 wire set in the QNA analyzer ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA 202 Page 29 6 2 1 2 Quality parameters Parameter Average values Maximum values Minimum values tI 2 Le u e 3 2 Semicycles with voltage X X X dips Voltage dip intervals X X X Integrated Hz X X X Integrated V X X X X X X X X X of voltage quality X X X X X X X X X Wave form V X X X Wave form X X X Semicycles with voltage dip occurrences Number of semicycles detected as voltage dip events within the recording period The voltage level which set the occurrence of a voltage dip depend on the previously user defined value See section 6 1 5 Voltage dip intervals The number of semicycles detected as voltage dip events within the recording period could have consecutively happened or on the contrary sporadically happened This parameter indicates the number of different voltage dip interv

QNA-202

Contents

Download Pdf Manuals

Related Search

Related Contents