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1. D Board Earth Electr and Connection When the instrument is in the Save results menu location ID can be scanned from a barcode label with the barcode reader or can be read from a RFID tag with the RFID reader Z Figure 6 14 Connection of the barcode reader and RFID reader How to change the name of memory location a Connect the barcode reader or RFID reader to the instrument 59 MI 3125B MI 3125 BT EurotestCOMBO Data handling In Save menu select memory location to be renamed A new location name scanned from a barcode label or a RFID tag will be accepted by the instrument A successful receive of a barcode or RFID tag is confirmed by two short confirmation beeps a Use only barcode readers and RFID readers delivered by Metrel or authorized distributor 60 MI 3125B MI 3125 BT EurotestCOMBO Data handling 6 6 Communication Stored results can be transferred to a PC A special communication program on the PC automatically identifies the instrument and enables data transfer between the instrument and the PC There are three communication interfaces available USB RS 232 and Bluetooth 6 6 1 USB and RS232 communication The instrument automatically selects the communication mode according to detected interface USB interface has priority PS 2 RS 232 cable minimum connections 1 to 2 4 to 3 3 to 5 PS 2 for MI 3125 9 pin D female for PC Figure 6 15 Interface connection f
2. 45 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 8 Line impedance and prospective short circuit current Voltage drop Line impedance is measured in loop comprising of mains voltage source and line wiring Line impedance is covered by the requirements of the EN 61557 3 standard The Voltage drop sub function is intended to check that a voltage in the installation stays above acceptable levels if the highest current is flowing in the circuit The highest current is defined as the nominal current of the circuit s fuse The limit values are described in the standard EN 60364 5 52 Sub functions a Z LINE Line impedance measurement according to EN 61557 3 a AU Voltage drop measurement See chapter 4 7 Function selection for instructions on key functionality L PE N OA 0 O290 a 330 E Figure 5 32 Voltage drop Test parameters for line impedance measurement Selection of line impedance Zline or voltage drop AU sub function FUSE type Selection of fuse type BS88 BS3036 BS1361 BS1362 B C D FUSE Rated current of selected fuse FUSE T Maximum breaking time of selected fuse Minimum short circuit current for selected fuse See Appendix A for reference fuse data Additional test parameters for voltage drop measurement Maximum voltage drop 3 0 9 0 J 46 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 8 1 Line impedance and prospective short circuit current Circuits
3. 65 Hz No trip out of RCD 8 5 Line impedance and prospective short circuit current Voltage drop Line impedance Measuring range according to EN61557 is 0 25 Q 9 99kQ Measuring range Q Resolution O 0 00 9 99 0 01 5 0 10 0 99 hii let 100 996 i T 00k 9 99k lt 68 MI 3125B MI 3125 BT EurotestCOMBO Technical specification Prospective short circuit current calculated value Measuring range A Resolution A 0 00 0 99 0 01 1 0 99 9 Consider accuracy of line 100 999 E T resistance measurement 1 00k 99 99k ec O 100k 199k 1000 Test current at 230 VT 6 5 A 10 ms Nominal voltage range c0008 93 V 134 V 45 Hz 65 Hz 185 V 266 V 45 Hz 65 Hz 321 V 485 V 45 Hz 65 Hz Voltage drop calculated value Measuring range a 0 0 99 9 Consider accuracy of line impedance measurement s Zrer Measuring range 0 00 Q 20 0 Q See chapter 5 8 2 Voltage drop for more information about calculation of voltage drop result 8 6 Resistance to earth Measuring range according to EN6155 7 5 is 0 25 Q 1999 Q Measuring range Q Resolution Q 0 00 19 99 0 01 20 0 199 9 5 of reading 5 digits 200 9999 Max auxiliary earth electrode resistance Rc 100xRe or 50 KQ whichever is lower Max probe resistance Rp ese eee 100xRe_ or 50 KQ whichever is lower Additional probe resistance error at Remax Of Remax
4. Displayed results AU eee Voltage drop Se sacar Prospective short circuit current EET Line impedance at measured point Zref Reference impedance Voltage drop is calculated as follows AU 2 rep ty 100 Uy where LA B usia calculated voltage drop As impedance at test point Z REP aces impedance at reference point testator rated current of selected fuse Un nominal voltage see table below Input voltage range L N or L1 L2 400 V Note a If the reference impedance is not set the value of Zrer is considered as 0 00 Q oa The Zrer is cleared set to 0 00 Q if pressing CAL key while instrument is not connected to a voltage source QO Isc is calculated as described in chapter 5 8 1 Line impedance and prospective short circuit current a If the measured voltage is outside the ranges described in the table above the AU result will not be calculated a High fluctuations of mains voltage can influence the measurement results the noise sign HiH is displayed in the message field In this case it is recommended to repeat few measurements to check if the readings are stable 5 9 Earth resistance Earth resistance is one of the most important parameters for protection against electric shock Main earthing arrangements lightning systems local earthings etc can be 49 MI 3125B MI 3125 BT EurotestCOMBO Measurements verified with the earthing resistance test The measurement conforms to the EN 61557
5. EurotestCOMBO MI 3125B MI 3125 BT Instruction manual Version 2 0 Code no 20 751 577 ZS METREL Distributor Manufacturer METREL d d Ljubljanska cesta 77 1354 Horjul Slovenia web site http www metrel si e mail metrel metrel si 2013 METREL The trade names Metrel Smartec Eurotest Autosequence are trademarks registered or pending in Europe and other countries No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL MI 3125B MI 3125 BT EurotestCOMBO Table of contents Table of contents 1 2 4 PrelaC e TT 6 Safety and operational considerationg ccs sss ss sss sss ss ecce esec eee eee 7 At Wamngsand NOS x osrand T IE SH R AIG enal ING erea 10 221 New battery cells or cells unused for a longer period sese eee 11 29 DlANGalGS Ap Pile sorasa E 11 ly cS g GES CHIP 1 Le Mereaina a ees 13 3 1 FON DANGI Pe ee ee ee eee 13 3 2 Connector DAMS T 14 Do HD e SIIC a 15 34 WISDIAY organizatori ine EOR 16 3 4 1 Terminal voltage monitor see eee eee eee eee 16 3 4 2 DAllery JNGICQUON ixitiijustniacdidaichent sehen me e a 16 3 4 3 Message Tel TTT 16 3 4 4 FIO SU CIO S dementia tha eee anes Sanaa 17 3 4 5 Souno WANNA T 17 3 4 6 FACTO SCLC CS geraro OR EE E EN 17 3 4 7 Backlight and contrast adjustments e see eee ee eee 18 Instrument operation noise eon eeu ese oan 19 4 1 melo g 614 0 gicy 21c1 6 9 sonr 19 S210 Se eke en
6. reports can be created with no or little modifications after downloading results to a PC RECALL FESULT PENOBIECT 191 D E I BORRD We ELEJEHR TH ELECTR cOMICONNECTION ai No 979 Figure 6 2 Installation structure and measurement fields Installation structure elements Memory operation menu LEJ DEJECT Bay D EJD BORRD 962 CIRICIRCUIT 062 Data structure field T Lon CONNECTION 26 a 1 level POE TIOBIECT 992 OBJECT Default location name object and its successive number a 2 level D E BORED 902 D BOARD Default location name distribution board and its successive number CIRICIRCUIT 662 a 3 level E C BONDING OIL CIRCUIT Default location name circuit and its 54 MI 3125B MI 3125 BT EurotestCOMBO Data handling ELEJEAR TH ELECTR successive number BONDING xxx Default location names 7 bonding connections EARTH ELECTR Default location name earth electrode a 4 level CONNECTION Default location name connection and oon CONNECT LON DG its Successive number 003 No of selected element No of measurements in selected location Ho 28 112 No of measurements in selected location and its sub locations Measurement field Wo 37472 No of selected test result No of all stored test results in g selected location k ISO Type of stored measurement in the selected location 6 3 Storing test results After the completion of a test the results and parameters
7. 10 of reading 10 digits Additional error at 3 V voltage noise 50 HZ see 5 of reading 10 digits Open Leire HIA ei e L lt 15 VAC SNOM CICUIE CUCU xcocicnaccrctoneccretanceasezenaesneesecs lt 30 mA Test voltage frequency eee ee e ee 125 Hz Test voltage shape ce eee eee sinusoidal Noise voltage indication threshold 1 V lt 50 Q worst case Automatic measurement of auxiliary electrode resistance and probe resistance 69 MI 3125B MI 3125 BT EurotestCOMBO Technical specification Automatic measurement of voltage noise 8 Voltage frequency and phase rotation 8 7 1 Phase rotation Nominal system voltage range 100 Vac 550 Vac Nominal frequency rang 14 Hz 500 Hz Result displayed 1 2 3 or 3 2 1 8 7 2 Voltage Measuring range V Resolution V 0 550 pT 2 Of reading 2 digits Result TY DC vtec vrceceseercertezceerectencemewhe True r m s trms Nominal frequency rang 0 Hz 14 Hz 500 Hz 8 7 3 Frequency Measuring range Hz Resolution Hz 0 00 9 99 0 10 0 499 9 0 2 of reading 1 digit Nominal voltage range c 88 10 V 550 V 8 7 4 Online terminal voltage monitor Measuring range V Resolution V 10 550 PT 2 Of reading 2 digits 8 8 General data Models MI 3125B and MI 3125 BT Power supply voltage 0ccc00 9 Voc 6x1 5 V battery or accu size AA Op
8. 5 standard EARTH RE eer See chapter 4 7 Function selection for instructions on key functionality FRE ees mes UI MGs ii RES it IE Figure 5 37 Earth resistance Test parameters for earth resistance measurement Maximum resistance OFF 1Q 5 kQ Earth resistance measurements common measurement procedure Select Asai function using the function selector switch Enable and set limit value optional Connect test leads to the instrument Connect the item to be tested see figures 5 38 5 39 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional SAN IMS OSS XS Ew gt 5d d Figure 5 38 Resistance to earth measurement of main installation earthing 50 MI 3125B MI 3125 BT EurotestCOMBO Measurements black BES Figure 5 39 Resistance to earth measurement of a lighting protection system 13 Rosi Ikt RPI aki D Figure 5 40 Example of earth resistance measurement result Displayed results for earth resistance measurement E Earth resistance PEI 1 55469 Resistance of S potential probe S Resistance of H current probe Notes a High resistance of S and H probes could influence the measurement results In this case Rp and Rc warnings are displayed There is no pass fail indication in this case a High noise currents and voltages in earth could influence the measurement results The tester displays the noise
9. 8 3 1 General data Nominal residual current A F AC 10 mA 30 mA 100 mA 300 mA 500 mA 1000 mA Nominal residual current accuracy O 0 1 IA IA IAN 2xIAN 5xIAN 0 1 IA 0 IA 0 5xIAN AS NZ selected 5 Test current shape eee eee eee Sine wave AC pulsed A F smooth DC B B DC offset for pulsed test current 6 mA typical ROD YPE ered r non delayed S time delayed Test current starting polarity 0 or 180 Voltage rande eee ee eee eee 93 V 134 V 45 Hz 65 Hz 185 V 266 V 45 Hz 65 Hz IAN x 1 2 ES pr Er L B AC AF B B AC AF B B AC A F B B 20 40 40 50 100 100 v vw v CE ea O 200 282 400 500 707 1000 v V v 600 848 na 1500 na na 1 C C 00 1000 1410 n a 19500 n a n a Te V v _ 500 350 500 2000 n a _ n a n a _ n a na V V Jna Ill E E E ETN ia applicable AG TDG neronen sine wave test current Pi ly s pulsed current ES FWY DCS g ERT T smooth DC current 8 3 2 Contact voltage RCD Uc Measuring range according to EN61557 is 20 0 V 31 0V for limit contact voltage 25V Measuring range according to EN6155 7 is 20 0 V 62 0V for limit contact voltage 50V Measuring range V Resolution V 0 0 19 9 0414 0 1 15 Of reading 10 digits 20 0 99 9 lt 0 15 of reading The accuracy is valid if mains voltage is stabile during the measurement and PE terminal is free of interfering vol
10. Android devices How to configure a Bluetooth link between instrument and PC Switch On the instrument On PC configure a Standard Serial Port to enable communication over Bluetooth link between instrument and PC No code for pairing the devices is needed Run the EurolinkPRO program The PC and the instrument will automatically recognize each other The instrument is prepared to communicate with the PC How to configure a Bluetooth link between instrument and Android device 62 MI 3125B MI 3125 BT EurotestCOMBO Data handling Switch On the instrument some Android applications automatically carry out the setup of a Bluetooth connection It is preferred to use this option if it exists This option is supported by Metrel s Android applications If this option is not supported by the selected Android application then configure a Bluetooth link via Android device s Bluetooth configuration tool No code for pairing the devices is needed The instrument and Android device are ready to communicate Notes a Sometimes there will be a demand from the PC or Android device to enter the code Enter code NNNN to correctly configure the Bluetooth link a The name of correctly configured Bluetooth device must consist of the instrument type plus serial number eg MI 3125 BT 12240429 lr the Bluetooth module got another name the configuration must be repeated a Model MI 3125 BT doesn t support operation with Bluetooth dongle A
11. Part 1 General requirements Part 2 Insulation resistance Part 3 Loop resistance Part 4 Resistance of earth connection and equipotential bonding Part 5 Resistance to earth Part 6 Residual current devices RCDs in TT and TN systems Part 7 Phase sequence Part 10 Combined measuring equipment Other reference standards for testing RCDs BS EN 61008 BS EN 61009 EN 60364 4 41 EN 60364 5 52 BS 7671 AS NZ 3760 Residual current operated circuit breakers without integral overcurrent protection for household and similar uses Residual current operated circuit breakers with integral overcurrent protection for household and similar uses Electrical installations of buildings Part 4 41 Protection for safety protection against electric shock Low voltage electrical installations Part 5 52 Selection and erection of electrical equipment Wiring systems IEE Wiring Regulations 17T edition In service safety inspection and testing of electrical equipment Note about EN and IEC standards a Text of this manual contains references to European and British standards All standards of EN 6XXXX e g EN 61010 series are equivalent to IEC standards with the same number e g IEC 61010 and differ only in amended parts required by European harmonization procedure 12 MI 3125B MI 3125 BT EurotestCOMBO Instrument description 3 Instrument description 3 1 Front panel Figure 3 1 Front panel 128 x 64 dots matrix disp
12. controls charging and assures maximum baittery lifetime Figure 2 2 Power supply socket polarity The instrument automatically recognizes the connected power supply adapter and begins charging Symbols Indication of battery charging Figure 2 3 Charging indication B A When connected to an installation the instruments battery compartment can contain hazardous voltage inside When replacing battery cells or before opening the battery fuse compartment cover disconnect any measuring accessory connected to the instrument and turn off the instrument a Ensure that the battery cells are inserted correctly otherwise the instrument will not operate and the batteries could be discharged a If the instrument is not to be used for a long period of time remove all batteries from the battery compartment Q Alkaline or rechargeable Ni Cd or Ni MH batteries size AA can be used Metrel recommends only using rechargeable batteries with a capacity of 2100mAh or above a Do not recharge alkaline battery cells 10 MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations a Use only power supply adapter delivered from the manufacturer or distributor of the test equipment to avoid possible fire or electric shock 2 2 1 New battery cells or cells unused for a longer period Unpredictable chemical processes can occur during the charging of new battery cells or cells that have been left unused for a longer pe
13. gt 30 IV gt 30 gt 999 ms Minimum test period for current of 2xlan RCD shall not trip out Test current and measurement accuracy correspond to AS NZ requirements Maximum test times related to selected test current for general non delayed RCD Standard Maximum test times related to selected test current for selective time delayed RCD Standard EN 61008 EN 61009 EN 60364 4 41 1000 ms 1000 ms BS 7671 2000 ms 22 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation AS NZ IV 1000 ms 1000 ms a a 4 2 5 Z factor The impedance limit values for different overcurrent protective devices are scaled down by a factor 0 8 or 0 75 Z factor This means that the fault current will still be high enough also at increased conductor temperatures and low supply voltage This assures a safe operation of the overcurrent protection device in all conditions SET z FACTOR In this menu the Z factor can be set Z factor EEE Figure 4 6 Selection of Z factor Keys UP DOWN Sets Z value TEST Confirms Z value Function selectors Exits back to main function menu 4 2 6 Communication model MI 3125B COMMUNICATION In this menu the Bluetooth dongle A 1436 INIT ET DONGLE can be initialized and device for scanning barcodes can be selected Figure 4 7 Menu for Bluetooth communication Keys UP DOWN Selects option TEST Confirms selected option Function selector Exits back to ma
14. MQ 1 GQ Measuring range Q Resolution MQ 200M 999M 10 of reading Voltage Nominal voltages sese eee eee 50 Vpc 100 Voc 250 Voc 500 Voc 1000 Voc Open circuit voltage c ccceeeeeee 0 20 of nominal voltage Measuring Current eee ee min 1 mA at Ry Uyxt kQ V Short deiei de Hi TT Eceran max 3 mA The number of possible tests gt 1200 with a fully charged battery Auto discharge after test Specified accuracy is valid up to 100 MQ if relative humidity gt 85 In case the instrument gets moistened the results could be impaired In such case it is recommended to dry the instrument and accessories for at least 24 hours The error in operating conditions could be at most the error for reference conditions specified in the manual for each function 5 of measured value 8 2 Continuity amp Ring r1 r2 fn RitRe RitRn Measuring range according to EN6155 7 is 0 16 Q 1999 Q Measuring range R Q Resolution Q 0 00 19 99 3 of reading 3 digits 20 0 199 9 S 200 1999 En Open circuit vYO tade ss sexe 6 5 VDC 9 VDC Measuring Current eee eee eee min 200 mA into load resistance of 2 Q Test lead compensation up to5 Q The number of possible tests gt 2000 with a fully charged battery Automatic polarity reversal of the test voltage 65 MI 3125B MI 3125 BT EurotestCOMBO Technical specification 8 3 RCD testing
15. Ulee 231 Unie Bl Figure 5 4 Voltage in single phase system Test parameters for voltage measurement There are no parameters to set Connections for voltage measurement a E a i 28 MI 3125B MI 3125 BT EurotestCOMBO Measurements Figure 5 6 Connection of plug cable and universal test cable in single phase system Voltage measurement procedure Select the 4o my re Sais function using the function selector switch Connect test cable to the instrument Connect test leads to the item to be tested see figures 5 5 and 5 6 Store voltage measurement result by pressing the MEM key optional U2 374 SG iHe 43 3740 yt 1 2 3 023 560 L PE N EE 31764 Nee J74 Figure 5 7 Examples of voltage measurement in three phase system Displayed results for single phase system CII Voltage between phase and neutral conductors Ulpe Voltage between phase and protective conductors Unpe Voltage between neutral and protective conductors e frequency Displayed results for three phase system U12 Voltage between phases L1 and L2 6 e Voltage between phases L1 and L3 UZ oera Voltage between phases L2 and L3 eae ER Correct connection CW rotation sequence K Invalid connection CCW rotation sequence IE frequency 29 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 3 Insulation resistance The Insulation resistance measurement is performed in order to
16. are ready for storing kd icon is displayed in the information field By pressing the MEM key the user can store the results FECALL FESULTI E GEJ OBJECT 191 FREE 993 TX Ef SAVE Figure 6 3 Save test menu B Memory space available for storing results Keys in save test menu installation structure field TAB Selects the location element Object D Board Circuit or Bonding or Electrode Connection UP DOWN Selects the location element in selected level Saves test results to the selected location and returns to the MEM measuring menu Function selector Exits back to main function menu TEST Notes a The instrument offers to store the result to the last selected location by default a If the measurement is to be stored to the same location as the previous one just press the MEM key twice 55 MI 3125B MI 3125 BT EurotestCOMBO Data handling 6 4 Recalling test results Press the MEM key in a main function menu when there is no result available for storing or select MEMORY in the SETTINGS menu FECALL FESLIL TS oe 131 STTS E D E D BOARD ELEJEHRTH E COM COMME T Mo 1 4 WOLTAGE TRMS Figure 6 4 Recall menu installation Figure 6 5 Recall menu measurements Structure field selected field selected Keys in recall memory menu installation structure field Selects the location element Object D Board Circuit or TAB Bonding or Electrode Connection UP DOWN Selects
17. ek Ren eee ener eee 20 4 2 1 MOMOFV TET 20 4 2 2 Eeee 21 4 2 3 Date QO Ume ast stashed teed tie eisai ac incuba bad neta Mee tu celad tuts ane he aed ced cated 21 4 2 4 FACTS VO SUN soot ete etaies eset et casein gon ee ee ee a ee meee eee 21 4 2 5 Vis 2 6 6 See aOR H RET COTE EER ASCE Re Pr ene ean eee A 23 4 2 6 Communication model MI 3125B cccccccccssseccccscseeeececseneecesseeeecesseeseesssseeeessaneess 23 4 2 7 Commander SUDDOME TTT 24 4 2 8 ITAL SOTHING sekkaa a E niuie UL ae Ge Btn ee cena eeek sedans et 25 MeasuremeNnlS R AE A E heeds E aes ee 27 5 1 Compensation of test leads resistanCe see eee eee 27 5 2 Voltage frequency and Phase SEQUENCE see ee eee e e e e e ee 28 D0 MISUIAUOMFFESIS AM CC rennene A E 30 S4 CONNU esea A 32 99 RNOCONUNUY ereere iene E EEEa 34 SO L iets ROD eane a eer ere eet ere eee eee rere eee eee errr er 38 5 6 1 Conlack volage ROD UC T 39 5 6 2 Reis ele 0 ss sarees es ach Saeed a a a 40 5 6 3 THID OUT CUPen ROD I sea sesceteutcuue cde T N T N E 41 5 6 4 FA PAO eS TTT 41 5 7 Fault loop impedance and prospective fault Current eee e eee e eee e 44 5 8 Line impedance and prospective short circuit current Voltage drop 46 5 8 1 Line impedance and prospective Short circuit Current see e e e ee eee 47 5 8 2 VONAGE OOD T 48 D9 21811 fESISTANCC neien ASAE Sa 49 MI 3125B MI 3125 BT EurotestCOMBO Table of contents 5 10 PE test terminal eee eee ee ee e e ee 51 6 Data Nan
18. for measurement of line impedance JU m LC L T KS Figure 5 33 Phase neutral or phase phase line impedance measurement connection of plug cable and 3 wire test lead Line impedance measurement procedure Select the IN 3 sub function Select test parameters optional Connect test cable to the instrument Connect test leads to the item to be tested see figure 5 33 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional C 32H 35m 20 282 v 74 13 7 lsc Sn fH Limslis rH e205 0 d IDE 33H Line to neutral Line to line Figure 5 34 Examples of line impedance measurement result Tscil 43kHLim 326 BH L PE N HS t l I7 Displayed results Tore Line impedance S Prospective short circuit current Lim Low limit prospective short circuit current value or high limit line impedance value for the UK version Prospective short circuit current is calculated as follows I Unx koc SC Z where BT Nominal L N or L1 L2 voltage see table below KSC Correction factor for Isc see chapter 4 2 5 47 MI 3125B MI 3125 BT EurotestCOMBO Measurements Input voltage range L N or L1 L2 110 V 93 V lt ULn lt 134 V 230 V 185 V lt Uun lt 266 V 400 V 321 V lt UL lt 485 V Note Q High fluctuations of mains voltage can influence the measurement results the noi
19. measuring procedure Select the vE function using the function selector switch select the insulation subfunction with A V keys Set the required test voltage Enable and set limit value optional Disconnect tested installation from mains supply and discharge insulation as required Connect test cable to the instrument and to the item to be tested see Fig 5 9 Press the TEST key to perform the measurement double click for continuous measurement and later press to stop the measurement After the measurement is finished wait until tested item is fully discharged Store the result by pressing the MEM key optional ISO L E Bes hn Rr DDO ua Une F25 L P DE ae Figure 5 10 Example of insulation resistance measurement result Displayed results L Insulation resistance B Test voltage actual value 31 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 4 Continuity The Continuity measurement is performed in order to ensure that the protective measures against electric shock through earthing connections and bondings are effective Six continuity sub functions are available r1 FN r2 R TR R2 R TRN U U U U U U It is important to select the appropriate sub function in order to classify the measurement to be correctly considered in verification documents Electrical Installation Certificate Periodic Inspection Report etc The r1 rn r2 R1 R2 and R continuity tests are carried out between L a
20. out a Re activate RCD a Test with xIAN 0 step 5 RCD should not trip out a Test with 2xIAN 180 step 6 RCD should not trip out o Trip out current test 0 step 7 RCD should trip out a Re activate RCD THE o Trip out current test 180 step 8 RCD should trip out a Re activate RCD ame a Store the result by pressing the MEM key optional End of test Result examples Pi Son G Pi Son G lide Ame mE lide Hms 35 TMS Moe UE UE Moe mE mE mE l mE mE PR Son G PR Son G xigh oma 35 ome lide Ame 35 ome woe Ta MS mE xD farma Lll ims pa EArt mE mE lIi WS WS 42 MI 3125B MI 3125 BT EurotestCOMBO Measurements Dm G Dm G lide Mme 35 me xig Mme 35 me woe farma 11 i1imS woe farma 11 1imS 1 EArt 1 SA Dms Fame La mA mg Dm G S4mA G xigh Mme 35 TMS xigh Mme 35 TMS xD farma 11 imS woe farma 11 1imS Y rohama 3 59EInmse pre Shes 200nme Lat 27 ANA mA Figure 5 26 Individual steps in RCD autotest TM Sona G x1lidea hms 35 MS xaos farma Li ime rez zooms 7 20IGIme Top Bottom Figure 5 27 Two parts of result field in RCD autotest Displayed results Ki eee Step 1 trip out time t IAN 0 XT Step 2 trip out time L71 5 IAN 180 Keen Step 3 trip out time t A 5xIAN 0 Saas Step 4 trip out time 175 5 5xIAN 180 x Step 5 trip out time C5 4xIAN 0 XY oes Step 6 trip out time C2 Vas
21. 1436 a Model MI 3125 BT In case of serious troubles with the Bluetooth communication it is possible to reinitialize the internal Bluetooth module The initialization is carried out during the Initial settings procedure In case of a successful initialization INTERNAL BLUETOOTH SEARCHING OK is displayed at the end of the procedure See chapter 4 2 8 Initial settings 63 MI 3125B MI 3125 BT EurotestCOMBO Maintenance 7 Maintenance Unauthorized persons are not allowed to open the Eurotest Combo instrument There are no user replaceable components inside the instrument except the battery and fuse under rear cover 7 1 Fuse replacement There is a fuse under back cover of the Eurotest Combo instrument a F1 M 0 315 A 250 V 20x5 mm This fuse protects internal circuitry for continuity functions if test probes are connected to the mains supply voltage by mistake during measurement Warnings o A Disconnect all measuring accessory and switch off the instrument before opening battery fuse compartment cover hazardous voltage inside a Replace blown fuse with original type only otherwise the instrument may be damaged and or operator s safety impaired Position of fuses can be seen in Figure 3 4 in chapter 3 3 Back side 7 2 Cleaning No special maintenance is required for the housing To clean the surface of the instrument use a soft cloth slightly moistened with soapy water or alcohol Then leave the instrument to dry to
22. 2 slightly increases with length if cross section of PE conductor is smaller than of line conductor Commit results TAB key to R1 RN and R1 R2 positions Perform measurement on the next socket in final ring circuit Commit results TAB key again The results will be committed only if they are 36 MI 3125B MI 3125 BT EurotestCOMBO Measurements higher as the previous results The R1 RN and R1 R2 results can be cleared with the TAB key Repeat the measurement on all sockets of the final ring circuit The R1 RN and R1 R2 results can be cleared with the TAB key After the measurements are finished store the result optional RING RIt KH R1 k2 RING RI RN R1 k2 RItRA EA 34 B Spi RItRS 9A 33h B 32h 0 290 2 0 ATR Figure 5 20 Examples of Ring Continuity test step 2 Displayed results R1 RN Reference test value committed and measured FR VEER Z iia Reference test value committed and measured r14 1r2 4 Calculated reference value r1 rN 4 Calculated reference value 37 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 6 Testing RCDs Various test and measurements are required for verification of RCD s in RCD protected installations Measurements are based on the EN 61557 6 standard The following measurements and tests Sub functions can be performed Contact voltage Trip out time Trip out current RCD autotest U U DO See chapter 4 7 Function selection for ins
23. 25 BT EurotestCOMBO Instrument description 3 3 Back side Figure 3 3 Back side Legend Side belt Battery compartment cover Fixing screw for battery compartment cover Back panel information label Holder for inclined position of the instrument Magnet for fixing instrument close to tested item optional O O01 DAON gt Figure 3 4 Battery compartment Legend 1 Battery cells Size AA alkaline or rechargeable NiMH NiCd 2 Serial number label 3 Fuse M 0 315 A 250 V 15 MI 3125B MI 3125 BT EurotestCOMBO Instrument description 3 4 Display organization Function name 2loor BS3636 15A z0 AGa v Result field 0 AG Isct498A Limi4 199 oe T RS3A36 15A Se Test parameter field Isc 435A DIS Figure 3 5 Typical function display Lim 4 120 i pe wo D Message field Logi he LEG 230 e208 R Terminal voltage ee 29 monitor l Battery indication 3 4 1 Terminal voltage monitor The terminal voltage monitor displays on line the voltages on the test terminals and information about active test terminals L PE N 2914 0 231 d L PE N S2310 0 230 d L PE N 2306 0 230 Online voltages are displayed together with test terminal indication All three test terminals are used for selected measurement Online voltages are displayed together with test terminal indication L and N test terminals are used for selected measurement L and PE are ac
24. 5 BT EurotestCOMBO Measurements Figure 5 14 Example of Continuity result Displayed result E ETETETT Continuity result H Result at positive polarity Roi oes Result at negative test polarity 5 5 Ring Continuity With Easy Switch A1214 the resistance measurements in final ring circuits can be simplified The Easy Switch cares for correct connectivity at the switchboard r1 rn r2 or R i R2 R 1 Ry Measurements can be performed in one go RING rlsarZarh see chapter 4 7 Function selection for instructions on key functionality RItRHE u u kitki h Figure 5 16 Ring Continuity R R2 Ry LH Test parameters for Ring Continuity measurement Subfunction r4 Fa rn R R2 R Ry The Ring Continuity measurement is performed with automatic polarity reversal of the test voltage according to IEC EN 61557 4 34 MI 3125B MI 3125 BT EurotestCOMBO Measurements Test circuits for Ring Continuity measurement mains voltage switched off L N mains voltage switched off L o N 6 PE C p c Figure 5 18 Step 2 measurement of resistances R R2 R Ry 35 MI 3125B MI 3125 BT EurotestCOMBO Measurements Ring Continuity measuring procedure Step 1 r4 rn r2 resistance measuring procedure Select the Nite function Set sub function r1 rN r2 Compensate test leads resistance if necessary see chapter 5 1 Connect Easy Switch to the instrument see figure 5 17 Connect Easy switch to
25. G Other gt BONDING Earning conductor gt CONNECTION 001 gt CONNECTION 199 gt DISTRIBUTION BOARD 199 gt CIRCUIT 001 gt CIRCUIT 002 gt CIRCUIT 199 gt EARTH ELECTRODE gt BONDING Water gt BONDING Oil gt BONDING Lightning gt BONDING Gas gt BONDING Structural Steel 53 MI 3125B MI 3125 BT EurotestCOMBO Data handling gt BONDING Other gt BONDING Earning conductor gt CONNECTION 001 gt CONNECTION 199 OBJECT 002 OBJECT 199 Figure 6 1 Instrument memory organization The memory structure is organized in a way that is suited to BS 7671 and other verification documents Electrical Installation Certificate Periodic Inspection Report etc If the results are stored in appropriate memory locations an automatic creation of a certificate report is possible Display organization The installation structure field describes the location of the measurement which object board circuit connection In the measurement field there is information about type and number of measurements that belong to the selected structure element object and board and circuit and connection The main advantages of this system are a Test results can be organized and grouped in a structured manner that reflects the structure of the electrical installation a Customized names of data structure elements can be uploaded from EurolinkPRO PCSW a Simple browsing through the structure and results a Test certificates
26. Rx IAN 180 La sz Step 7 trip out current 0 Pea Step 8 trip out current 180 LIG Contact voltage for rated IAN a The autotest sequence is immediately stopped if any incorrect condition is detected e g excessive Uc or trip out time out of bounds a Auto test is finished without x5 tests in case of testing the RCD types A F with rated residual currents of lAn 300 mA 500 mA and 1000 mA In this case auto test result passes if all other results pass and indications for x5 are omitted a Tests for sensitivity la steps 7 and 8 are omitted for selective type RCD 43 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 Fault loop impedance and prospective fault current Fault loop is a loop comprised by mains source line wiring and PE return path to the mains source The instrument measures the impedance of the loop and calculates the short circuit current The measurement is covered by requirements of the EN 61557 3 standard apd See chapter 4 1 Function selection for instructions on key functionality Figure 5 28 Fault loop impedance Test parameters for fault loop impedance measurement Selection of fault loop impedance sub function Zloop Zs rcd See Appendix A for reference fuse data Circuits for measurement of fault loop impedance Figure 5 29 Connection of plug cable and universal test cable 44 MI 3125B MI 3125 BT EurotestCOMBO Measurements Fault loop impedance measurem
27. a Tip commander A 1401 versions 3 x xx and higher 73 MI 3125B MI 3125 BT EurotestCOMBO Appendix C C Appendix C Commander A 1401 c 1 A Warnings related to safety Measuring category of commander Tip commander cap off 18 mm tip 1000 V CAT II 600 V CAT II 300 V CAT II Tip commander cap on 4 mm tip 1000 V CAT II 600 V CAT III 300 V CAT IV a Measuring category of commander can be lower than protection category of the instrument a If dangerous voltage is detected on the tested PE terminal immediately stop all measurements find and remove the fault a When replacing battery cells or before opening the battery compartment cover disconnect the measuring accessory from the instrument and installation a Service repairs or adjustment of instruments and accessories is only allowed to be carried out by a competent authorized personnel C 2 Battery The commander uses two AAA size alkaline or rechargeable Ni MH battery cells Nominal operating time is at least 40 h and is declared for cells with nominal capacity of 850 mAh Notes a If the commander is not used for a long period of time remove all batteries from the battery compartment a Alkaline or rechargeable Ni MH batteries size AA can be used Metrel recommends only using rechargeable batteries with a capacity of 800 mAh or above a Ensure that the battery cells are inserted correctly otherwise the commander will not operate and the batteri
28. a basis of rich experience acquired through many years of dealing with electric installation test equipment The Eurotest instrument is professional multifunctional hand held test instrument intended to perform all the measurements required in order for a total inspection of electrical installations in buildings The following measurements and tests can be performed Voltage and frequency Continuity tests Insulation resistance tests RCD testing Fault loop RCD trip lock impedance measurements Line impedance Voltage drop Earth test Phase sequence U U U U U U U LU The graphic display with backlight offers easy reading of results indications measurement parameters and messages Two LED Pass Fail indicators are placed at the sides of the LCD The operation of the instrument is designed to be as simple and clear as possible and no special training except for the reading this instruction manual is required in order to begin using the instrument In order for operator to be familiar enough with performing measurements in general and their typical applications it is advisable to read Metrel handbook Guide for testing and verification of low voltage installations Model versions 3 x xx and higher supports operation with new commander A 1401 The model MI 3125 BT has inbuilt Bluetooth interface for easy communication with PC and Android devices The instrument is equipped with the entire necessary accessory for comforta
29. ains voltage is stabile during the measurement and PE terminal is free of interfering voltages Trip out measurement is not available for lan 1000 mA RCD types B B Specified accuracy is valid for complete operating range 8 4 Fault loop impedance and prospective fault current 8 4 1 No disconnecting device or FUSE selected Fault loop impedance Measuring range according to EN61557 is 0 25 Q 9 99kQ Measuring range Q Resolution O 0 00 9 99 0 01 0 10 0 99 9 gall 100 999 e 1 00k 9 99K 67 MI 3125B MI 3125 BT EurotestCOMBO Technical specification Prospective fault current calculated value Measuring range A Resolution A 0 00 9 99 100 5899 op resister 100k 9 99k measurement 10 0k 23 0k The accuracy is valid if mains voltage is stabile during the measurement Test current at 230 VT 6 5 A 10 ms Nominal voltage range sese eee ee 93 V 134 V 45 Hz 65 Hz 185 V 266 V 45 Hz 65 Hz 8 4 2 RCD selected Fault loop impedance Measuring range according to EN6155 7 is 0 46 Q 9 99 KQ Measuring range Q Resolution 0 0 00 9 99 S 10 0 99 9 100 999 S 3 1 00k 9 99k Saa Accuracy may be impaired in case of heavy noise on mains voltage Prospective fault current calculated value Consider accuracy of fault aaas T T bop resistance 100k 9 99k_ 10 measurement Nominal ak ange TT 93 V 134 V 45 Hz 65 Hz 185 V 266 V 45 Hz
30. asured with a test current lower than lan to avoid trip out of the RCD and then normalized to the rated Ian Contact voltage measurement procedure Select the 9 998 function using the function selector switch Set sub function Uc Set test parameters if necessary Connect test cable to the instrument Connect test leads to the item to be tested see figure 5 22 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional The contact voltage result relates to the rated nominal residual current of the RCD and is multiplied by an appropriate factor depending on RCD type and type of test current The 1 05 factor is applied to avoid negative tolerance of result See table 5 1 for detailed contact voltage calculation factors RCD type Contact voltage Uc proportional to Rated lan Ac CI 1 05xlan any ac is 2x1 05xlan Uu 1 4x1 05xlaN gt 30 mA 2x1 4x1 05xlan 2x2x1 05xlan u 2x1 05xIAN any 2x2x1 05xIAN Table 5 1 Relationship between Uc and lan 39 MI 3125B MI 3125 BT EurotestCOMBO Measurements Loop resistance is indicative and calculated from Uc result without additional proportional factors according to R re l AN 36m G SU uc Sy Rls 24 Fmax 1667o L PE H 229 0 ae 139 Figure 5 23 Example of contact voltage measurement results Displayed results IG iian Contact voltage Rl ENEI Fault loop resistance R
31. ble testing MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations 2 Safety and operational considerations 2 1 Warnings and notes In order to maintain the highest level of operator safety while carrying out various tests and measurements Metrel recommends keeping your Eurotest instruments in good condition and undamaged When using the instrument consider the following general warnings E The A symbol on the instrument means Read the Instruction manual with special care for safe operation The symbol requires an action If the test equipment is used in a manner not specified in this user manual the protection provided by the equipment could be impaired Read this user manual carefully otherwise the use of the instrument may be dangerous for the operator the instrument or for the equipment under test Do not use the instrument or any of the accessories if any damage is noticed If a fuse blows in the instrument follow the instructions in this manual in order to replace it Consider all generally known precautions in order to avoid risk of electric shock while dealing with hazardous voltages Do not use the instrument in supply systems with voltages higher than 550 V Service intervention or adjustment is only allowed to be carried out by a competent authorized personnel Use only standard or optional test accessories supplied by your distributor Consider that protection category of some a
32. ccccccecceccsecseeeseesseteeeeeeeeeeeeenaes 65 o gt R ODEN ee E ee ee 66 8 3 1 SOT tec recog ato ea cw ines ec E peace eee 66 8 3 2 Contaci VON ACCC OC x tes caasvcus amaan ane sande EE EDE 66 8 3 3 lee 66 8 3 4 TPO OC eT 67 8 4 Fault loop impedance and prospective fault Current eee eee eee eee e 67 8 4 1 No disconnecting device or FUSE Selected ses eee eee 67 8 4 2 HCU SelecCied see 68 8 5 Line impedance and prospective short circuit current Voltage drop 68 OO RE Rae OE eE EE E A E A AN N E RN 69 8 7 Voltage frequency and phase rotation ee eee eee ee 70 8 7 1 FASO FOLIO aea E EE EEE E 70 8 7 2 VOM AGC aeaa E E A E E E E A E 70 8 7 3 FOO V e E E EAE E E EE 70 8 7 4 Online terminal voltage monitof sss ee e e ee ee ee eee 70 98 GEMS T Ca H 70 A Appendix A Fuse table sss s sees eee eee eee 72 A 1 Fuse table impedances UK 72 B Appendix B Accessories for specific measurements sss ecce eee e ecce ecce eee 73 C Appendix C Commander A 1401 sss sss sese 74 C 1 A Warnings related to E 14 MI 3125B MI 3125 BT EurotestCOMBO Table of contents G2 BINI perme Renee Rn ne eee ee ae Rae ner aed ee ne ene ne nee net nee Me ner ne eer eer ener Renee Re ee eee 74 C3 Description OF e elan Te T 14 15 C 4 Operation of commander MI 3125B MI 3125 BT EurotestCOMBO Preface 1 Preface Congratulations on your purchase of the Eurotest instrument and its accessories from METREL The instrument was designed on
33. ccessories is lower than of the instrument Test tips and Tip commander have removable caps If they are removed the protection falls to CAT Il Check markings on accessories cap off 18 mm tip CAT Il up to 1000 V cap on 4mm tip CAT Il 1000 V CAT Ill 600 V CAT IV 300 V The instrument comes supplied with rechargeable Ni Cd or Ni MH battery cells The cells should only be replaced with the same type as defined on the battery compartment label or as described in this manual Do not use standard alkaline battery cells while the power supply adapter is connected otherwise they may explode Hazardous voltages exist inside the instrument Disconnect all test leads remove the power supply cable and switch off the instrument before opening the battery compartment All normal safety precautions must be taken in order to avoid risk of electric shock while working on electrical installations MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations A Warnings related to measurement functions Insulation resistance a Insulation resistance measurement should only be performed on de energized objects a Do not touch the test object during the measurement or before it is fully discharged Risk of electric shock a When an insulation resistance measurement has been performed on a capacitive object automatic discharge may not be done immediately The warning message and the actual voltage is displayed during discharge
34. d measurement a A double click of TEST key starts a continuous measurement MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations Continuity functions a If voltages of higher than 10 V AC or DC is detected between test terminals the continuity resistance test will not be performed a Before performing a continuity measurement where necessary compensate test lead resistance RCD functions a Parameters set in one function are also kept for other RCD functions a The measurement of contact voltage does not normally trip an RCD However the trip limit of the RCD may be exceeded as a result of leakage current flowing to the PE protective conductor or a capacitive connection between L and PE conductors a The RCD trip lock sub function function selector switch in LOOP position takes longer to complete but offers much better accuracy of fault loop resistance in comparison to the R sub result in Contact voltage function a RCD trip out time and RCD trip out current measurements will only be performed if the contact voltage in the pre test at nominal differential current is lower than the set contact voltage limit a The autotest sequence RCD AUTO function stops when trip out time is out of allowable time period Z LOOP a The low limit prospective short circuit current value depends on fuse type fuse current rating fuse trip out time and impedance scaling factor a The specified accuracy of tested para
35. d to be changed UP DOWN Modifies selected field TEST Confirms new setup and exits Function selectors Exits back to main function menu Warning a If the batteries are removed for more than 1 minute the set time and date will be lost 4 2 4 RCD testing RCD TESTING In this menu the used standard for RCD ENB 1HRS EN6 1 9672 IEC 6h364 4 41 tests can be set Be ery AUSeHe Figure 4 5 Selection of RCD test standard Keys 21 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation UP DOWN Selects standard TEST Confirms selected standard Function selectors Exits back to main function menu Maximum RCD disconnection times differ in various standards The trip out times defined in individual standards are listed below Trip out times S to EN 61008 EN 61009 Seta ae ta gt iti S Cie t gt 500 time delayed ro 130 ms lt t lt 500 ms 60 ms lt t lt 200 ms 50 ms lt t lt 150 ms Trip out times een to EN 4 41 ae rata cae ta gt _ S Cie t gt 999 time delayed gt 909 130 ms lt t lt 999 ms 60 ms lt t lt 200 ms 50 ms lt t lt 150 ms Trip out times according to ee 1671 xl General RCDs t gt 1999 non delayed ms oe Selective RCDs t gt 1999 130 ms lt t lt 500 60 ms lt t lt 200 50 ms lt t lt 150 time delayed ms ms ms ms Trip out times according to AS NZ Pt lt t0 E eee Maximum break time Mm f
36. dling sss esse ss essse eee eee eee eee 53 61 M mory ORG ANI ZA MOM iacasesecssccecensaanscoascsessuseanseenauassceasoscsaeasessmenceessmassssapaeseseases 53 02 PaaS SUCU eee E E 99 Bo ONN 119 FES WIS eea E E E E EEEE 59 OA Recalling test Te SUNS acne sanacopacaansansansesmacanacogsnaeeraqaganedamaanenagansenseqasaencenacoennauad 56 6 5 Clearing stored data sss 57 6 5 1 Clearing complete memory content ee ee e ee e ee 57 6 5 2 Clearing measurement s in selected location and its sub locations 57 6 5 3 Clearing individual measurements eee ee e ee e ee e 58 6 5 4 Renaming installation structure elements upload from PC ss esse ee 59 6 5 5 Renaming installation structure elements with serial barcode reader or RFID reader 59 DO CONTEO ee EE E E T EE E E E E 61 6 6 1 USB and RS232 COMMUNI CANON sicsiietes vataierwetinuenenietcinioi rese EAE EEE TE ETE 61 6 6 2 Bluetooth communication model MI 3125B sse se ee eee 61 6 6 3 Bluetooth communication model MI 3125 BT sese eee 62 T 7 TTS 71 r T el ee eee een eee er ner een nnn eee 64 7 1 Fuse replacement eee ee ee eee 64 Te NAN I 64 Lo FP CRIOCIC CalllOl v lt Ten 64 7 4 Upgrading the instrument sese eee ee eee eee 64 ee AGO E E E EEA TEN 64 B Technical specifications cssss sese esc e ecce eee e eee eee eee ennenen 65 8 1 Insulation resistance ISO L N ISO L E ISO N E ISO L L ee 65 8 2 Continuity amp Ring r1 r2 ry RatRae RitRn
37. enable communication over Bluetooth link between instrument and PC No code for pairing the devices is needed Run the EurolinkPRO program The PC and the instrument will automatically recognize each other The instrument is prepared to communicate with the PC Switch Off and On the instrument Bluetooth dongle A 1436 must be inserted to the instrument s PS 2 port Be sure that the dongle is properly initialized If not the Bluetooth dongle must be initialized as described in chapter 4 2 6 Communication model MI 3125B Some Android applications automatically carry out the setup of a Bluetooth connection It is preferred to use this option if it exists This option is supported by Metrel s Android applications If this option is not supported by the selected Android application then configure a Bluetooth link via Android devices Bluetooth configuration tool No code for pairing the devices is needed The instrument and Android device are ready to communicate Sometimes there will be a demand from the PC or Android device to enter the code Enter code NNNN to correctly configure the Bluetooth link The name of a correctly configured Bluetooth device must consist of the instrument type plus serial number eg MI 3125B 12240429D f the Bluetooth dongle got another name the configuration must be repeated Bluetooth communication model MI 3125 BT The internal Bluetooth module enables easy communication via Bluetooth with PC and
38. ensure safety against electric shock through insulation It is covered by the EN 61557 2 standard Typical applications are Insulation resistance between conductors of installation Insulation resistance of non conductive rooms walls and floors Insulation resistance of ground cables Resistance of semi conductive antistatic floors U U U Four Insulation resistance sub functions are available ISO L E ISO L N ISO L L ISO N E U U U U The insulation resistance tests are carried out in the same way regardless which sub function is selected However it is important to select the appropriate sub function in order to classify the measurement to be correctly considered in verification documents Electrical Installation Certificate Periodic Inspection Report etc ISO LE BS T See chapter 4 7 Function selection for instructions on key functionality Figure 5 8 Insulation resistance Test parameters for insulation resistance measurement Subfunction ISO L E ISO L N ISO N E ISO L L Test voltage 50 V 100 V 250 V 500 V 1000 V Minimum insulation resistance OFF 0 01 MQ 200 MQ 30 MI 3125B MI 3125 BT EurotestCOMBO Measurements Test circuits for insulation resistance PE L3 l i i diii i i ea a L e ee switched off mains voltage LL T N PE L PE 9 Figure 5 9 Connections for insulation measurement Insulation resistance
39. ent procedure Select the lie or 74W subfunction using the function selector switch and Aly keys Select test parameters optional Connect test cable to the Eurotest Combo Connect test leads to the item to be tested see figures 5 29 and 5 22 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional loot PS43636 15H BS3HS36 15H 35 z0 46n z0 492 Isc 495A Limi d 190 Isc d6 H Limi4 198 L PE N L PE gO 2306 0 O 25 0 2939 eee 215 Figure 5 30 Examples of loop impedance measurement result Displayed results Zien Fault loop impedance G Prospective fault current Lim High limit fault loop impedance value Prospective fault current Ipfc is calculated from measured impedance as follows Uy pre Z ne Scaling _ factor where Ueci Nominal UL pe voltage see table below Scaling factor Impedance correction factor see chapter 4 2 5 Input voltage L PE 110 V 93 V lt UL pe lt 134 V 230 V 185 V lt UL pe lt 266 V Notes a High fluctuations of mains voltage can influence the measurement results the noise sign HiH is displayed in the message field In this case it is recommended to repeat few measurements to check if the readings are stable Q The Zloop test will trip out the RCD in RCD protected electrical installation a Select Zs rcd to prevent trip out of RCD in RCD protected installation
40. erat oN ee typical 20 h Charger socket input voltage 12V 10 Charger socket input current 400 mA max Battery charging current 250 mA internally regulated Overvoltage category c ceee 600 V CAT III 300 V CAT IV Plug test cable overvoltage category 300 V CAT Il Protection classification 0 double insulation Pollution Gegree cccccsseceeeeeeees 2 Protection degree css eee IP 40 MI 3125B MI 3125 BT EurotestCOMBO Technical specification Re 128x64 dots matrix display with backlight Dimensions w x h x Ql 14 cm x 8 cm x 23 cm YOTO aereu ENE 1 0 kg without battery cells Reference conditions Reference temperature range 10 C 30 C Reference humidity range 40 RH 70 RH Operation conditions Working temperature range 0 C 40 C Maximum relative humidity 95 RH 0 C 40 C non condensing Storage conditions Temperature rande eee e 10 C 70 C Maximum relative humidity 90 RH 10 C 40 C 80 RH 40 C 60 C Communication transfer speed RS 232 115200 baud USB 256000 baud QZ nea rana 1700 results Model MI 3125 BT Bluetooth module Class 2 The error in operating conditions could be at most the error for reference conditions specified in the manual for each function 1 of measured value 1 digit unless otherwise specified
41. ere are two separated calibration values one for ry fn r2 Ri tRe and Ro one for R1 Rn CAL The symbol is displayed in the Continuity message fields if the compensation was carried out successfully Circuits for compensating the resistance of test leads PE PE L L extension lead Figure 5 1 Shorted test leads Compensation of test leads resistance procedure Select Continuity function Connect test cable to the instrument and short the test leads together appropriately see figure 5 1 Press CAL key to perform test lead compensation If the leads were successfully calibrated the resistance with old calibration data is displayed first and 0 000 afterwards CALIBRATION CALIBRATION Rin 1 002 Rin 0 00 0 Rre 1 000 Rre 0 00 Figure 5 2 Results with old calibration values Figure 5 3 Results with new calibration values Note a The highest value for lead compensation is 5 Q If the resistance is higher the compensation value is set back to default value CAL _ is displayed if no calibration value is stored 2 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 2 Voltage frequency and phase sequence In the special VOLTAGE TRMS menu the measured voltage frequency and information about detected three phase connection are displayed Phase sequence measurement conforms to the EN 61557 7 standard hia See chapter 4 7 Function selection for instructions on Ulm 231 fs Sa AH key functionality
42. es could be discharged C 3 Description of commander 4 MI 3125B MI 3125 BT EurotestCOMBO Appendix C Figure C 2 Back side Legend 1 OO O OND ON AON wedh od TEST LED LED LEDs Function selector MEM BL Lamp key Battery cells Battery cover Cap TEST Starts measurements Acts also as the PE touching electrode Left status RGB LED Right status RGB LED Lamp LEDs Tip commander Selects test function Store recall clear tests in memory of instrument Switches On Off backlight on instrument Switches On Off lamp Tip commander Size AAA alkaline rechargeable NiMH Battery compartment cover Removable CAT IV cap Tip commander C 4 Operation of commander Both LED yellow Right LED red Right LED green Left LED blinks blue Left LED orange Both LEDs blink red Both LEDs red and switch off Warning Dangerous voltage on the commander s PE terminal Fail indication Pass indication Commander is monitoring the input voltage Voltage between any test terminals is higher than 50 V Low battery Battery voltage commander too low for operation of 79 MI 3125B MI 3125 BT EurotestCOMBO Appendix C PE terminal test procedure Connect commander to the instrument Connect commander to the item to be tested see Figure C 3 Touch PE test probe the TEST key on commander for at least one second lf PE terminal is connected to phase voltage both LEDs will light yello
43. esults may be impaired oe Test leads resistance in Continuity measurement is not compensated T Test leads resistance in Continuity measurement is compensated 3 4 4 Result field Measurement result is inside pre set limits PASS Measurement result is out of pre set limits FAIL OKS Measurement is aborted Consider displayed warnings and messages 3 4 5 Sound warnings Continuous sound Warning Dangerous voltage on the PE terminal is detected 3 4 6 Help screens HELP Opens help screen Help menus are available in all functions The Help menu contains schematic diagrams for illustrating how to properly connect the instrument to electric installation After selecting the measurement you want to perform press the HELP key in order to view the associated Help menu Keys in help menu UP DOWN Selects next previous help screen HELP Scrolls through help screens Function selectors TEST Exits help menu 17 MI 3125B MI 3125 BT EurotestCOMBO Instrument description Figure 3 6 Examples of help screens 3 4 7 Backlight and contrast adjustments With the BACKLIGHT key backlight and contrast can be adjusted Click Toggles backlight intensity level Locks high intensity backlight level until power is turned off or the key is pressed again Keep pressed for 2s Bargraph for LCD contrast adjustment is displayed Keep pressed for 1s LCD CONTRAST Figure 3 7 Contrast adjustment menu Keys for con
44. eteriorated a The effects described above should not be confused with the normal decrease of battery capacity over time Battery also loses some capacity when it is repeatedly charged discharged Actual decreasing of capacity versus number of charging cycles depends on battery type This information is provided in the technical specification from battery manufacturer 2 3 Standards applied The Eurotest instruments are manufactured and tested in accordance with the following regulations Electromagnetic compatibility EMC BS EN 61326 Electrical equipment for measurement control and laboratory use EMC requirements Class B Hand held equipment used in controlled EM environments 11 MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations Safety LVD BS EN 61010 1 BS EN 61010 031 BS EN 61010 2 032 Functionality BS EN 61557 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements Safety requirements for hand held probe assemblies for electrical measurement and test Safety requirements for electrical equipment for measurement control and laboratory use Part 2 032 Particular requirements for hand held and hand manipulated current sensors for electrical test and measurement Electrical safety in low voltage distribution systems up to 1000 Vac and 1500 Vac Equipment for testing measuring or monitoring of protective measures
45. in function menu without changes Warning a Customized settings will be lost when this option is used a Ifthe batteries are removed for more than 1 minute the custom made settings will be lost 25 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation The default setup is listed below Zfactor 0 Versions 3 x xx A1314 A1401 Initialization of internal Bluetooth module MI 3125 BT only Function Parameters limit value Sub function EARTH RE RISO No limit L N L E N E L L Utest 500 V CONTINUITY No limit r1 rN r2 R2 R1 R2 R1 RN Z LINE Fuse type none selected VOLTAGE DROP AU 4 0 ZREF 0 00 O Z LOOP Fuse type none selected ZS rcd Fuse type none selected RCD RCD t Nominal differential current lan 30 mA RCD type L non delayed Test current starting polarity lt gt 0 Limit contact voltage 50 V Current multiplier x1 Note a Initial settings reset of the instrument can be recalled also if the TAB key is pressed while the instrument is switched on 26 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 Measurements 5 1 Compensation of test leads resistance This chapter describes how to compensate the test leads resistance in Continuity function Compensation is required to eliminate the influence of test leads resistance and the internal resistances of the instrument on the measured resistance The lead compensation is therefore very important to obtain correct result Th
46. in menu without changes Initialization of the Bluetooth dongle The Bluetooth dongle A 1436 should be initialized when it is used with the instrument for the first time During initialization the instrument sets the dongle parameters and name in order to communicate properly with PC and other devices via Bluetooth Initialization procedure 23 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation 1 Connect Bluetooth dongle A 1436 to the instrument s PS 2 port 2 Press RESET key on the Bluetooth dongle A 1436 for at least 5 seconds 3 Select INIT BT DONGLE in Communication menu and press TEST 4 Wait for confirmation message and beep Following message is displayed if dongle was initialized properly EXTERNAL BT DONGLE SEARCHING OK Notes a The Bluetooth dongle A 1436 should always be initialized before first use with the instrument a If the dongle was initialized by another Metrel instrument it will probably not work properly when working with the previous instrument again Bluetooth dongle initialization should be repeated in that case a For more information about communication via Bluetooth refer to chapter 6 6 Communications and A 1436 manual Selection of barcode scanner type In this menu the barcode scanner type can be set Options are a Serial barcode scanner a Barcode scanner application on Android devices check list of approved Metrel Android devices and applications Keys UP DOWN Selects optio
47. in the manual for particular function 71 MI 3125B MI 3125 BT EurotestCOMBO Appendix A A Appendix A Fuse table A 1 Fuse table impedances UK Fuse type B Fuse type C Rated Rated current 04 5 f curet 04 5 A A pS T1264 12264 o S e 3064 3 064 Rated Rated current eo a a A pT 1536 1536 5 8 8G 12 264 09 2 092 f 16 0576 0576 20 0 232 0 232 80 0 144 0144 0 112 0112 100 0088 0088 1235 0072 0072 Fuse type BS 88 2 systems E and G Fuse type BS 1362 Rated Rated a current 04 5 A A p 6 J 6568 1024 3 1312 1856 10 f f 392 5752 143 _ 1936 3 064 p16 2048 3344 20 1416 236 _ FusetypeBS 3036 2 108 184 Rated 32 f 0832 1 472 curent 04 5 a g po 108A po 8A 14 16 po SG ST 204 428 800 OT f 1416 3 064 100 o o S osea OD BFA 2 112 1235 J o 27D 4B 8272 160 J CT O89 2000 0152 10 All impedances are scaled with factor 0 8 7 2 MI 3125B MI 3125 BT EurotestCOMBO Appendix B B Appendix B Accessories for specific measurements The table below presents standard and optional accessories required for specific measurement The accessories marked as optional may also be standard ones in some sets Please see attached list of standard accessories for your set or contact your distributor for further information Suitab
48. irmation to clear selected measurement TAB Returns to installation structure field Function selector TEST Exits back to main function menu without changes Keys in dialog for confirmation to clear selected result s HELP Deletes selected measurement result MEM TAB Exits back to measurements field without changes Function selector Exits back to main function menu without changes TEST 58 MI 3125B MI 3125 BT EurotestCOMBO DELETE FESULT gt aaa PETOBRIECT AAP D E I POARI ba CIFJCIEFCUIT fel con CONNECTION bel CLEAR RESULT Figure 6 11 Dialog for confirmation Data handling DELETE FESLIL TS PENOBRIECT 092 t e D BOARD HAZ CIRICIFCUIT ei Loon CONNECTION ii Z Ho Ll I 0 LE Figure 6 12 Display after measurement was cleared 6 5 4 Renaming installation structure elements upload from PC Default installation structure elements are Object D Board Earth Electr and Connection In the PCSW package EurolinkPRO default names can be changed with customized names that corresponds the installation under test Refer to PCSW EurolinkPRO HELP for information how to upload customized installation names to the instrument Z Ho izi Is0 LE Figure 6 13 Example of menu with customized installation structure names 6 5 5 Renaming installation structure elements with serial barcode reader or RFID reader Default installation structure elements are Object
49. lay with backlight TEST Starts measurements Acts also as the PE touching electrode Legend 1 LCD 2 TEST 3 UP 4 DOWN 5 MEM 6 Function selectors 7 Backlight Contrast 8 ON OFF 9 HELP CAL 10 TAB 11 PASS FAIL 12 Modifies selected parameter Store recall clear tests in memory of instrument Selects test function Changes backlight level and contrast Switches the instrument power on or off The instrument automatically turns off 15 minutes after the last key was pressed In RCD Auto toggles between top and bottom parts of results field Accesses help menus Calibrates test leads in Continuity functions Starts Zrer Measurement in Voltage drop sub function Selects the parameters in selected function Green indicator _ indicates PASS FAIL of result Red indicator 13 MI 3125B MI 3125 BT EurotestCOMBO Instrument description 3 2 Connector panel Figure 3 2 Connector panel Legend 1 Testconnector Measuring inputs outputs 2 Protection cover 3 Charger socket 4 USB connector Communication with PC USB 1 1 port Communication with PC serial port and connection to optional 5 PS 2 connector accessories Serial port for upgrading the instrument Warnings a Maximum allowed voltage between any test terminal and ground is 600 V a Maximum allowed voltage between test terminals is 600 V a Maximum short term voltage of external power supply adapter is 14 V 14 MI 3125B MI 31
50. le accessories Optional with ordering code A Function Insulation resistance a Universal test cable a Tip commander A 1270 versions 2 x xx a Tip commander A 1401 versions 3 x xx and higher Continuity a Universal test cable a Tip commander A 1270 versions 2 x xx a Tip commander A 1401 versions 3 x xx and higher a Probe test lead 4m A 1154 Ring Continuity a Universal test cable a Mains measuring cable a Easy switch A 1214 Line impedance a Universal test cable a Mains measuring cable a Tip commander A 1270 versions 2 x xx a Tip commander A 1401 versions 3 x xx and higher a Three phase adapter A 1110 a Three phase adapter with switch A 1111 a Universal test cable a Mains measuring cable a Tip commander A 1270 versions 2 x xx a Tip commander A 1401 versions 3 x xx and higher a Three phase adapter A 1110 a Three phase adapter with switch A 1111 RCD testing a Universal test cable a Mains measuring cable a Three phase adapter A 1110 a Three phase adapter with switch A 1111 Earth resistance RE a Universal test cable a Earth test set 20 m 3 wire S 2026 a Earth test set 50 m 3 wire S 2027 Phase sequence a Universal test cable a Three phase adapter A 1110 a Three phase adapter with switch A 1111 Voltage frequency a Universal test cable a Mains measuring cable Fault loop impedance a Tip commander A 1272 versions 2 x xx
51. max Maximum earth fault loop resistance value according to BS 7671 5 6 2 Trip out time RCDt Trip out time measurement verifies the sensitivity of the RCD at different residual currents Trip out time measurement procedure Select the 9 998 function using the function selector switch Set sub function RCDt Set test parameters if necessary Connect test cable to the instrument Connect test leads to the item to be tested see figure 5 22 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional Figure 5 24 Example of trip out time measurement results Displayed results L Trip out time LI Contact voltage for rated Ian 40 MI 3125B MI 3125 BT EurotestCOMBO Measurements 5 6 3 Trip out current RCD I A continuously rising residual current is intended for testing the threshold sensitivity for RCD trip out The instrument increases the test current in small steps through appropriate range as follows Slope range Waveform RCD type Slope range Waveform Start value Endvalue _ __ _ A F lan gt 30 mA 0 2xlan 1 5xlaN Pul A F lan 10 MA used B B 0 2xIAN 2 2xIAN Maximum test current is trip out current or end value in case the RCD didn t trip out Trip out current measurement procedure Select the 9 998 function using the function selector switch Set sub function RCD I Set test parameters if necessary Connect test cable to the i
52. meters is valid only if the mains voltage is stable during the measurement a Fault loop impedance measurements will trip an RCD a The measurement of fault loop impedance using trip lock function does not normally trip an RCD However the trip limit may be exceeded as a result of leakage current flowing to the PE protective conductor or a capacitive connection between L and PE conductors Z LINE VOLTAGE DROP a In case of measurement of Ziine ine with the instrument test leads PE and N connected together the instrument will display a warning of dangerous PE voltage The measurement will be performed anyway a Specified accuracy of tested parameters is valid only if mains voltage is stable during the measurement MI 3125B MI 3125 BT EurotesttCOMBO Safety and operational considerations 2 2 Battery and charging The instrument uses six AA size alkaline or rechargeable Ni Cd or Ni MH battery cells Nominal operating time is declared for cells with nominal capacity of 2100 mAh Battery condition is always displayed in the lower right display part In case the battery is too weak the instrument indicates this as shown in figure 2 1 This indication appears for a few seconds and then the instrument turns itself off Too LOW GL Figure 2 1 Discharged battery indication The battery is charged whenever the power supply adapter is connected to the instrument The power supply socket polarity is shown in figure 2 2 Internal circuit
53. n TEST Confirms selected option Function selector Exits back to main menu without changes SCANNER TPE ANDROID Figure 4 8 Menu for Scanner type 4 2 7 Commander support The support for commanders can be set in this menu 24 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation COMMANDER ON OFF COMMANDER ON OFF COMMANDER ENABLED HIL 31 d HI dg COMMANDER DISHBLED COMMANDER DISHELED Versions 2 x XX Versions 3 x xx and higher Figure 4 9 Selection of commander support Keys UP DOWN Enables commander support Disables commander support selects commander model versions 3 x xx and higher TEST Confirms selected option Function Exits back to main function menu selectors Commander models versions 3 x xx and higher a A1314 A1401 new commanders more information can be found in Appendix C Note a Commander disabled option is intended to disable the commander s remote keys In the case of high EM interfering noise the operation of the commander s key can be irregular 4 2 8 Initial settings INITIAL SETTINGS In this menu the instrument settings and Contrast Language Fungt ion Parameters measurement parameters and limits can be set to initial factory values Internal Bluetooth module is initialized MI 3125 BT only Figure 4 10 Initial settings dialogue Keys TEST Restores default settings YES must be selected with Aly keys Function selectors Exits back to ma
54. nd PE terminals in the same way regardless of which sub function is selected The R Ry continuity test is carried out between L and N terminals See chapter 4 7 Function selection for instructions on key functionality Figure 5 11 Example R2 Test parameters for Continuity measurement Subfunction r1 r2 rn R2 RitR2 RitRn Maximum resistance OFF 0 1 Q 20 0 Q The Continuity measurement is performed with automatic polarity reversal of the test voltage according to IEC EN 61557 4 Test circuits for Continuity measurement MI 3125B MI 3125 BT EurotestCOMBO Measurements R TRN Figure 5 12 Connections for testing the r1 rn r2 and Ry Ry sections of the wiring in ring circuits rc Ny Extension lead Ro R R2 Figure 5 13 Connections for testing the R and R R sections of the wiring in final circuits Continuity measurement procedure Select Continuity function using the function selector switch Set sub function with A V keys Enable and set limit optional Connect test cable to the instrument Compensate the test leads resistance if necessary see section 5 3 1 Disconnect tested installation from mains supply Connect the test leads to the appropriate PE wiring see figures 5 12 and 5 13 Press the TEST key to perform the measurement After the measurement is finished store the result by pressing the MEM button optional U U U U U U U U U 33 MI 3125B MI 312
55. nstrument Connect test leads to the item to be tested see figure 5 22 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional eee Sem D 27 00 V 27 Ona Ue15 9 iu LS AB Rime fe ON Rial a Ook Trip out Figure 5 25 Trip out current measurement result example Displayed results L Trip out current Uci Contact voltage at trip out current or end value in case the RCD didn t trip L Trip out time 5 6 4 RCD Autotest RCD autotest function is intended to perform a complete RCD test trip out time at different residual currents trip out current and contact voltage in one set of automatic tests guided by the instrument Additional key HELP DISPLAY Toggles between top and bottom part of results field 41 MI 3125B MI 3125 BT EurotestCOMBO Measurements RCD autotest procedure RCD Autotest steps Notes Select the 9 998 function using the function selector switch set sub function AUTO Set test parameters if necessary Connect test cable to the instrument Connect test leads to the item to be tested see figure 5 22 Press the TEST key to perform the test Start of test a Test with lan 0 step 1 a Re activate RCD Parr oa Test with lan 180 step 2 RCD should trip out a Re activate RCD annan oa Test with 5xlan 0 step 3 RCD should trip out a Re activate RCD deine a Test with 5xlan 180 step 4 RCD should trip
56. or data transfer over PC COM port How to establish an USB or RS232 link RS 232 communication connect a PC COM port to the instrument PS 2 connector using the PS 2 RS232 serial communication cable USB communication connect a PC USB port to the instrument USB connector using the USB interface cable Switch on the PC and the instrument Run the EurolinkPRO program The PC and the instrument will automatically recognize each other The instrument is prepared to communicate with the PC The program EurolinkPRO is a PC software running on Windows XP Windows Vista Windows 7 and Windows 8 Read the file README_EuroLink txt on CD for instructions about installing and running the program Note a USB drivers should be installed on PC before using the USB interface Refer to USB installation instructions available on installation CD 6 6 2 Bluetooth communication model MI 3125B With the optional Bluetooth dongle A 1436 the MI3125B instrument can communicate via Bluetooth How to configure a Bluetooth link between instrument and PC 61 MI 3125B MI 3125 BT EurotestCOMBO Data handling m Notes L E 6 6 3 Switch Off and On the instrument Bluetooth dongle A 1436 must be inserted to the instrument s PS 2 port Be sure that the dongle is properly initialized If not the Bluetooth dongle must be initialized as described in chapter 4 2 6 Communication model MI 3125B On PC configure a Standard Serial Port to
57. riod more than 3 months Ni MH and Ni Cd cells can be subjected to these chemical effects sometimes called the memory effect As a result the instrument operation time can be significantly reduced during the initial charging discharging cycles of the batteries In this situation Metrel recommend the following procedure to improve the battery lifetime Procedure Notes gt Completely charge the battery At least 14h with in built charger This can be performed by using the gt Completely discharge the battery instrument normally until the instrument is fully discharged gt Repeat the charge discharge cycle Four cycles are recommended in order to at least 2 4 times restore the batteries to their normal capacity Notes a The charger in the instrument is a pack cell charger This means that the battery cells are connected in series during the charging The battery cells have to be equivalent Same charge condition same type and age a One different battery cell can cause an improper charging and incorrect discharging during normal usage of the entire battery pack it results in heating of the battery pack significantly decreased operation time reversed polarity of defective cell a If no improvement is achieved after several charge discharge cycles then each battery cell should be checked by comparing battery voltages testing them in a cell charger etc It is very likely that only some of the battery cells are d
58. rminal immediately stop all measurements find and remove the fault Notes a Inthe SETTINGS and VOLTAGE TRMS menus the PE terminal is not tested a PE test terminal does not operate in case the operator s body is completely insulated from floor or walls 52 MI 3125B MI 3125 BT EurotestCOMBO Data handling 6 Data handling 6 1 Memory organization Measurement results together with all relevant parameters can be stored in the instrument s memory After the measurement is completed results can be stored to the flash memory of the instrument together with the sub results and function parameters 6 2 Data structure The instruments memory place is organized in a four level structure as follows a Object 1 structure level the highest level a Distribution Board 2 structure level a Circuit Earth Electrode Bonding conductors 3 structure level 4 Connection 4 structure level OBJECT 001 gt DISTRIBUTION BOARD 001 gt CIRCUIT 001 gt CIRCUIT 002 gt CIRCUIT 199 gt EARTH ELECTRODE gt BONDING Water gt BONDING Oil gt BONDING Lightning gt BONDING Gas gt BONDING Structural Steel gt BONDING Other gt BONDING Earning conductor gt CONNECTION 001 gt CONNECTION 199 gt DISTRIBUTION BOARD 002 gt CIRCUIT 001 gt CIRCUIT 002 gt CIRCUIT 199 gt EARTH ELECTRODE gt BONDING Water gt BONDING Oil gt BONDING Lightning gt BONDING Gas gt BONDING Structural Steel gt BONDIN
59. ructure field selected Selects the location element Object D Board Circuit or TAS Bonding or Electrode Connection UP DOWN Selects the location element in selected level Function selector TEST Exits back to main function menu HELP Enters dialog box for deleting all measurements in selected location and its sub locations 5 MI 3125B MI 3125 BT EurotestCOMBO Data handling Keys in dialog box for clearing results in selected location and its sub locations HELP Deletes all results in selected location sub location s TAB MEM Exits back to installation structure field menu without changes Function selector Exits back to main function menu without changes TEST 6 5 3 Clearing individual measurements Select DELETE RESULTS in MEMORY menu DELETE FESUL TS PETMORIECT Haz T E D EDARI Ba CIR CIEFCUIT bel Loon CONNECTION bel Ho Zez LSD L E Figure 6 10 Menu for clearing individual measurement installation structure field selected Keys in delete results menu installation structure field selected Selects the location element Object D Board Circuit or TAS Bonding or Electrode Connection UP DOWN Selects the location element in selected level Function selector TEST Exits back to main function menu MEM Enters measurements field Keys in delete results menu measurements field selected UP DOWN Selects measurement HELP Opens dialog box for conf
60. se sign HiH is displayed in the message field In this case it is recommended to repeat few measurements to check if the readings are stable 5 8 2 Voltage drop The voltage drop is calculated based on the difference of line impedance at connection points sockets and the line impedance at the reference point usually the impedance at the switchboard Circuits for measurement for voltage drop Figure 5 35 Phase neutral or phase phase voltage drop measurement connection of plug cable and 3 wire test lead Voltage drop measurement procedure Step 1 Measuring the impedance Zref at origin Select the MBI sub function using the function selector switch and A V keys Select test parameters optional Connect test cable to the instrument Connect the test leads to the origin of electrical installation see figure 5 35 Press the CAL key to perform the measurement Select the MBI sub function using the function selector switch and A V keys Select test parameters Fuse type must be selected Connect test cable or plug commander to the instrument Connect the test leads to the tested points see figure 5 35 Press the TEST key to perform the measurement Store the result by pressing the MEM key optional 48 MI 3125B MI 3125 BT EurotestCOMBO Measurements Step 1 Zref Step 2 Voltage drop Figure 5 36 Examples of voltage drop measurement result
61. tages L SECUITC IL anane max 0 5xlaN Limit contact voltage cceeeee 20 V BU V Specified accuracy is valid for complete operating range 8 3 3 Trip out time Complete measurement range corresponds to EN 61557 requirements Maximum measuring times set according to selected reference for RCD testing Measuring range ms Resolution ms 0 0 40 0 0 1 ms 66 MI 3125B MI 3125 BT EurotestCOMBO Technical specification For max time see normative references in 4 2 3 this specification applies to max time gt 40 ms Test Current Lax lAN lan 2Xlan DXlAN 5xlan is not available for lan 1000 mA RCD type AC or lan 300 mA RCD types A F B B 2xlan is not available for lan 1000 mA RCD types A F or lan 300 mA RCD types B B 1xlan is not available for lan 1000 mA RCD types B B Specified accuracy is valid for complete operating range 8 3 4 Trip out current Trip out current Complete measurement range corresponds to EN 61557 requirements Measuring range I Resolution 0 2xlan 1 1xlan AC type 0 05xIan 0 2xlan 1 5xlan A F type lan 230 mA 0 05xIan 0 2xlan 2 2xlan A F type lan lt 30 mA 0 05xlan 0 2xlan 2 2xlan B B types 0 05xlan Trip out time Measuring range ms Resolution ms 0 300 Contact voltage Measuring range V Resolution V 0 0 19 9 0 15 of reading 10 digits 1 0 15 of reading The accuracy is valid if m
62. tally before use Warnings a Do not use liquids based on petrol or hydrocarbons a Do not spill cleaning liquid over the instrument 7 3 Periodic calibration It is essential that the test instrument is regularly calibrated in order that the technical specification listed in this manual is guaranteed We recommend an annual calibration Only an authorized technical person can do the calibration Please contact your dealer for further information 7 4 Upgrading the instrument The instrument can be upgraded from a PC via the RS232 communication port This enables to upgrade the instrument to the latest available software version The upgrade can be carried with a help of special upgrading software and the communication cable as shown on Figure 6 15 Please contact your dealer for more information 7 5 Service For repairs under warranty or at any other time please contact your distributor 64 MI 3125B MI 3125 BT EurotestCOMBO Technical specification 8 Technical specifications 8 1 Insulation resistance ISO UN ISO L E ISO N E ISO L L Insulation resistance nominal voltages 50 Vpc 100 V nc and 250 V nc Measuring range according to EN6155 7 is 0 25 MQ 199 9 MQ Measuring range MQ Resolution MQ 0 00 19 99 5 of reading 3 digits 20 0 99 9 0 1 10 of reading 100 0 199 9 20 of reading Insulation resistance nominal voltages 500 V nc and 1000 Vpc Measuring range according to EN61557 is 0 15
63. the final ring circuit The electrical installation must be de energized during the test see figure 5 17 Press the TEST key to perform the measurement Perform measurements of r1 rN and r2 Commit results TAB key to r1 rN and r2 The r1 rN r2 results can be cleared with the TAB key Store the results optional From r1 rn and r2 results reference values R1 Rn 4 R1 R2 4 are calculated The results are kept until they are changed or cleared Take care that measuring leads are compensated RING rl re rh s B AAN L A Seu M Figure 5 19 Examples of Ring Continuity test Step 1 Displayed results i eer Ring resistance of line conductors committed and measured GIN a Ring resistance of neutral conductors committed and measured EZ octane Ring resistance of protective conductors committed and measured Step 2 Ri Rn R R2 resistance measuring procedure Easy switch must stay connected to the final ring circuit The electrical installation must be de energized during the test see figure 5 18 Select the AMA function Set sub function R1 RN R1 R2 Connect plug cable or test cable to the instrument Compensate test leads resistance if necessary see chapter 5 1 Connect plug cable or test cable to a socket in final ring circuit Press the TEST key for measurements For correct ring wiring the results must be approximately the same as reference value ritrN 4 and ri r2 4 The resistance R1 R
64. the location element in selected level Function selector TEST Exits back to main function menu MEM Enters measurements field Keys in recall memory menu measurements field UP DOWN Selects the stored measurement TAB Returns to installation structure field Function selector l TEST Exits back to main function menu MEM View selected measurement results Figure 6 6 Example of recalled measurement result Keys in recall memory menu measurement results are displayed UP DOWN Displays measurement results stored in selected location MEM Returns to measurements field Function selector TEST Exits back to main function menu 56 MI 3125B MI 3125 BT EurotestCOMBO Data handling 6 5 Clearing stored data 6 5 1 Clearing complete memory content select CLEAR ALL MEMORY in MEMORY menu A warning see Figure 6 7 will be displayed CLEAR ALL MEMORY Figure 6 7 Clear all memory Keys in clear all memory menu TEST Confirms clearing of complete memory content Function selector Exits back to main function menu without changes CLEARING MEMORY Figure 6 8 Clearing memory in progress 6 5 2 Clearing measurement s in selected location and its sub locations Select DELETE RESULTS in MEMORY menu DELETE FESUL TS G NT HHz DELETE FESULTa foOETIOBIECT D E I BOARD Figure 6 9 Clear measurements menu data structure field selected Keys in delete results menu installation st
65. tive test terminals N terminal should also be connected for correct input voltage condition 3 4 2 Battery indication The indication indicates the charge condition of battery and connection of external charger Ka 1 Battery capacity indication Low battery Battery is too weak to guarantee correct result Replace or recharge the battery cells Recharging in progress if power supply adapter is connected 3 4 3 Message field In the message field warnings and messages are displayed Z L Measurement is running consider displayed warnings Conditions on the input terminals allow starting the measurement consider other displayed warnings and messages Conditions on the input terminals do not allow starting the measurement consider displayed warnings and messages 16 MI 3125B MI 3125 BT EurotestCOMBO Instrument description RCD tripped out during the measurement in RCD functions Instrument is overheated The measurement is prohibited until the temperature decreases under the allowed limit Result s can be stored High electrical noise was detected during measurement Results may be impaired L and N are changed Warning High voltage is applied to the test terminals Warning Dangerous voltage on the PE terminal Stop the activity immediately and eliminate the fault connection problem before proceeding with any activity ts een le High resistance to earth of test probes R
66. trast adjustment DOWN Reduces contrast UP Increases contrast TEST Accepts new contrast Function selectors Exits without changes 18 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation 4 Instrument operation 4 1 Function selection For selecting test function the FUNCTION SELECTOR shall be used Keys Select test measurement function lt VOLTAGE TRMS gt Voltage and frequency and phase sequence lt R ISO gt Insulation resistance FUNCTION lt Continuity gt Continuity of earth connections and bondings SELECTOR lt Zline gt Line impedance lt Zloop gt Fault loop impedance lt RCD gt RCD testing lt EARTH RE gt Resistance to earth a lt SETTINGS gt General instrument settings UP DOWN Selects sub function in selected measurement function U U U U U U LU TAB Selects the test parameter to be set or modified TEST Runs selected test measurement function MEM Stores measured results recalls stored results Keys in test parameter field UP DOWN Changes the selected parameter TAB Selects the next measuring parameter FUNCTION SELECTOR Toggles between the main functions MEM Stores measured results recalls stored results General rule regarding enabling parameters for evaluation of measurement test result OFF No limit values indication __ Parameter Value s results will be marked as PASS or FAIL in ON ae accordance with selected limit see chapter 5 for more information abo
67. tructions on key functionality L FE N _ 2328 0 A i h 332 Figure 5 21 RCD test Test parameters for RCD test and measurement TEST RCD sub function test RCDt RCD I AUTO Uc LAN Rated RCD residual current sensitivity lan 10 mA 30 mA 100 mA 300 mA 500 mA 1000 mA type RCD type AC A F B B starting polarity 2 selective or general characteristic Multiplication factor for test current 2 1 2 5 lan Conventional touch voltage limit 25 V 50 V Notes a Ulim can be selected in the Uc sub function only a Selective time delayed RCDs have delayed response characteristics As the contact voltage pre test or other RCD tests influence the time delayed RCD it takes a certain period to recover into normal state Therefore a time delay of 30 s is inserted before performing trip out test by default 38 MI 3125B MI 3125 BT EurotestCOMBO Measurements Connections for testing RCD Raj m Ro 1 Figure 5 22 Connecting the plug cable and the universal test cable 5 6 1 Contact voltage RCD Uc A current flowing into the PE terminal causes a voltage drop on earth resistance i e voltage difference between PE equipotential bonding circuit and earth This voltage difference is called contact voltage and is present on all accessible conductive parts connected to the PE It shall always be lower than the conventional safety limit voltage The contact voltage is me
68. until voltage drops below 10 V a Do not connect test terminals to external voltage higher than 600 V AC or DC in order not to damage the test instrument Continuity functions a Continuity measurements should only be performed on de energized objects a Parallel impedances or transient currents may influence test results Testing PE terminal a If phase voltage is detected on the tested PE terminal stop all measurements immediately and ensure the cause of the fault is eliminated before proceeding with any activity Notes related to measurement functions General o The EA indicator means that the selected measurement cannot be performed because of irregular conditions on input terminals Insulation resistance and continuity functions can only be performed on de energized objects a PASS FAIL indication is enabled when limit is set Apply appropriate limit value for evaluation of measurement results ag Inthe case that only two of the three wires are connected to the electrical installation under test only voltage indication between these two wires is valid Insulation resistance a If voltages of higher than 10 V AC or DC is detected between test terminals the insulation resistance measurement will not be performed If voltages of higher than 10 V AC or DC is detected between test terminals the insulation resistance measurement will not be performed a The instrument automatically discharge tested object after finishe
69. ut the operation of the instrument test functions 19 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation 4 2 Settings Different instrument options can be set in the SETTINGS menu a Selection of language a Setting the instrument to initial values a Selection of reference standard for RCD test a Entering Z factor a Commander support SELECT LANGUAGE a Recalling and clearing stored results m A m Setting the date and time SET FACTOR a External Bluetooth communication L module and scanner settings MI 3125B only Figure 4 1 Options in Settings menu Keys UP DOWN Selects appropriate option TEST Enters selected option Function selectors Exits back to main function menu 4 2 1 Memory BMEMOR Y In this menu the stored data can be recalled and deleted See chapter 6 Data handling for more information CLEAR ALL MEMORY Figure 4 2 Memory options Keys UP DOWN Selects option TEST Enters selected option Function selectors Exits back to main function menu 20 MI 3125B MI 3125 BT EurotestCOMBO Instrument operation 4 2 2 Language In this menu the language can be set Figure 4 3 Language selection Keys UP DOWN Selects language TEST Confirms selected language and exits to settings menu Function selectors Exits back to main function menu 4 2 3 Date and time In this menu date and time can be set Figure 4 4 Setting date and time Keys TAB Selects the fiel
70. w the warning message on the instrument is displayed instruments buzzer is activated and further measurements are disabled in Zloop function LI N PE HEE l Reversed phase and protection conductors THE MOST DANGEROUS ISITUATION Figure C 3 Reversed L and PE conductors application of tip commander 76
71. warning in this case a Probes must be placed at sufficient distance from the measured object 5 10 PE test terminal lt can happen that a dangerous voltage is applied to the PE wire or other accessible metal parts This is a very dangerous situation since the PE wire and MPEs are considered to be earthed An often reason for this fault is incorrect wiring see examples below When touching the TEST key in all functions that require mains supply the user automatically performs this test Examples for application of PE test terminal 31 MI 3125B MI 3125 BT EurotestCOMBO Measurements Reversed phase and 1 Protection conductors THE MOST DANGEROUS ISITUATION DLW 1 Figure 5 41 Reversed L and PE conductors application of plug cable L1 N PE a ea ae ee ee ee al Reversed phase and 1 protection conductors PE L3 Z MOST DANGEROUS N L2 N SITUATION D G e L U ry Figure 5 42 Reversed L and PE conductors application of universal test cable PE terminal test procedure Connect test cable to the instrument Connect test leads to the item to be tested see figures 5 41 and 5 42 Touch PE test probe the TEST key for at least one second lf PE terminal is connected to phase voltage the warning message is displayed instrument buzzer is activated and further measurements are disabled in Z LOOP and RCD functions Warning a If dangerous voltage is detected on the tested PE te

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