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METREL AlphaPAT, Инструкция по эксплуатации

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MI 2142 AlphaPAT                                                                                    Measurements 

 

29 

6.6.1  How to perform the measurement 

 
Select 

Polarity test

 in 

Single test menu

 by using   and   cursor keys and press 

ENTER key to confirm. 

Polarity test menu

 is displayed. 

 

 

 

Polarity test menu 

 
Press START key to perform test. 
 
After performing the test PASS or FAIL indication appears on the display. In case of 
FAIL result the detected fault is displayed. 
 

 

 

 

Examples of polarity test results 

 
Press START key to repeat the test or press ESC key to return to the 

Single test 

menu

. 

 

Note:  

 

Consider any displayed warning before starting test! 

 
 

6.7  True RMS current measurement 

 
This function enables measuring of AC currents in a wide range from 1mA up to 25A. 
Typical applications are: 
 

 

measuring leakage currents through PE conductor in permanently installed 
appliances, 

 

measuring load currents through L or N conductor in permanently installed 
appliances, 

 

measuring leakage currents through parallel current paths, etc. 

 

6.7.1  How to perform TRMS clamp current measurement 

 
In order to measure TRMS current by using current clamp connect the clamp to the 
instrument CLAMP connector first. 
 

Содержание AlphaPAT

Страница 1: ...AlphaPAT MI 2142 Instruction manual Ver 1 2 Code no 20 750 748 ...

Страница 2: ...i Mark on your equipment certifies that this equipment meets the requirements of the EU European Union concerning safety and interference causing equipment regulations 2003 2008 Metrel No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL ...

Страница 3: ... 21 6 1 1 How to perform single earth bond resistance measurement 21 6 2 Insulation resistance 22 6 2 1 Insulation resistance on class I appliances 22 6 2 2 Insulation resistance on class II appliances 23 6 2 3 How to perform single insulation resistance measurement 23 6 3 Substitute leakage current 24 6 3 1 Substitute leakage current on class I appliances 24 6 3 2 Substitute leakage current on cl...

Страница 4: ...rement 38 7 4 7 Polarity test 39 7 4 8 TRMS clamp current measurement 39 8 Saving and recalling autotest results 40 8 1 Autotest save results menu 40 8 1 1 How to view autotest sequence results 40 8 1 2 How to save autotest sequence results 40 8 1 3 How to download or send autotest sequence results 41 8 2 Recall results menu 41 8 2 1 How to search for and recall saved autotest results 41 8 2 2 How...

Страница 5: ...s indications measurement parameters and messages Operation is simple and clear operator does not need any special training except reading this user manual to operate the instrument Built in flash memory for storing test results is an important feature of the AlphaPAT MI 2142 instrument Professional PC software enables simple transfer of test results and other measurement parameters in both direct...

Страница 6: ...ure is allowed to be carried out only by a competent authorized person Use only standard or optional test cables supplied by your distributor In some countries the leakage and touch leakage current measurements shall be executed for normal connection of tested equipment and also for the connection with changed L and N It is advised to prepare appropriate test set up for the test with the changed l...

Страница 7: ...lp START ENTER 1 2 3 4 5 6 8 9 10 7 Front panel Legend 1 START STOP key 2 HELP key 3 SEND key 4 Function keys F1 and F2 5 Alpha numeric selector key Press the key to select the type of entry large small letters numbers via keypad 6 CLEAR key 7 Alpha numeric keypad 8 128 x 64 dots graphic matrix display with backlight 9 ESCAPE key 10 Cursor keys and ENTER key ...

Страница 8: ...not connect it to mains supply 3 Earth bond connector also used as an input in some class II measurements subleakage current touch leakage current and insulation resistance Warning When cord test being carried out the wander earth lead must not be connected to the instrument 4 PC connector 5 Barcode reader printer RFID TAG connector 6 Clamp current input Warning Do not connect any voltage source o...

Страница 9: ...A screw under the cover needs to be unscrewed when opening the instrument for service or calibration purposes 2 Screw 3 Label with measurement data 4 Fuse compartment cover 5 Information label 6 Fixing screw for fuse compartment cover see chapter 11 2 Fuses for instructions on fuse replacement 7 Rubber foot ...

Страница 10: ...oltage and PE connection Improper supply voltage warning Determine and eliminate the problem before proceeding Check for incorrect wiring on wall socket Possible causes no earth connection incorrect mains voltage L and N are crossed Press Start key to continue The instrument works normally also in the case when L and N are interchanged Pay attention to wrong polarity of line and neutral wires on t...

Страница 11: ...d to the tested appliance Proceed with testing only if all safety measures are taken Check regularity of cord connections of tested appliance before continuing test Select YES or NO with or key and press Enter key to confirm 110V ADAPTER CONNECTED No fuse test Indication that adapter for 110V appliance is connected into test socket 110V ADAPTER CONNECTED Measurement is prohibited 110V appliance ca...

Страница 12: ...age is applied the functionality of the instrument output relays is checked In case of error the mains voltage is not applied to the test socket In case of this warning return the instrument to the repair centre The earth bond test probe must be used in this test Remove the EB clip especially if it is connected to any part that will begin to rotate or move when power is applied Warning High voltag...

Страница 13: ... reading 3 digits 2 00 MΩ 19 99 MΩ 0 01 MΩ 5 of reading 3 digits Nominal voltages 250 V DC 500 V DC 0 10 Measuring current min 1 mA at 250 kΩ 250 V 500 kΩ 500 V Short circuit current 0 5 mA Pass levels 0 50 MΩ 1 00 MΩ 2 00 MΩ 4 00 MΩ 7 00 MΩ 10 00 MΩ Test duration 2 s 3 s 5 s 10 s 30 s Output test socket Class I test socket test probe connector Class II Auto discharge after test 3 3 Substitute lea...

Страница 14: ...kVA 3 7 kVA 0 01 kVA 10 of reading 3 digits Test duration 2 s 3 s 5 s 10 s 30 s 60 s 120 s 180 s Output test socket 3 5 Touch leakage current Touch leakage current readout Range Resolution Accuracy 0 00 mA 1 99 mA 0 01 mA 5 of reading 5 digits Pass levels 0 25 mA 0 50 mA 1 00 mA Test duration 2 s 3 s 5 s 10 s 30 s 60 s 120 s 180 s Output test socket test probe connector Probe human body model with...

Страница 15: ...s Input current clamp terminals 3 8 General data Rated supply voltage 230 V AC 10 50 or 60 Hz Max power consumption 140 VA without tested appliance Maximum appliance current 16 A Overvoltage category Cat II 300 V Protection classification I Pollution degree 2 Display 64 128 dots graphic matrix display with backlight Dimensions w h d 26 5 cm 11 cm 18 5 cm Weight without accessories 3 5 kg Memory 11...

Страница 16: ...alue per C and 1 digit Fuses Instrument protection T1 25 A 250 V 5 22 mm Test socket protection 2 x T16 A 250 V 6 3 32 mm Protection pre tests External voltage between L and PE or N and PE DC and AC External voltage on test clip DC and AC Excessive leakage between L and PE Short circuit or too low resistance between L and N Connectivity fuse pre test Appliance not switched on or too high resistanc...

Страница 17: ...lable in single and autotest modes Help menu contains schematic diagrams for illustration of proper connection of appliance under test to the AlphaPAT instrument 4 1 1 How to enter help menu After entering the selected measurement and before pressing START press HELP key in order to view help menu Examples of help menu Press HELP key again to see the next page if available Press HELP or ESC key to...

Страница 18: ...r this reason any autotest procedure can be set in the autotest custom menu In this menu the autotest results can be stored into instrument flash memory or sent to the PC for further purposes as well test reports can be printed out etc Autotest custom menu See chapter 7 Autotest modes for detailed description about these modes 4 2 3 Single test menu In single test menu individual tests can be perf...

Страница 19: ...otest TAG menu Autotest sequence and measurement results for tested appliance can be downloaded uploaded from to the RFID TAG Autotest RFID TAG menu See chapter 7 3 Autotest TAG menu for detailed description about Autotest 4 2 6 Setup menu In this menu general instrument parameters can be set Setup menu See chapter 10 1 Setup menu for detailed description ...

Страница 20: ...s displayed Single test menu By using and cursor keys select the measurement you want to perform and press ENTER key to confirm To return to the Single test menu press ESC key Selected test measurement parameters are detailed in the lower left corner of the display In general the following parameters can be set output test voltage current pass level and measurement duration Once the measurement pa...

Страница 21: ... electronics such as computers and other information technology equipment is tested For class I appliances a resistance is measured between the protective conductor of the test socket and test probe connection at the conductive parts of the appliance APPLIANCE UNDER TEST Measurement of earth bond resistance of class I appliance 6 1 1 How to perform single earth bond resistance measurement Select E...

Страница 22: ...eturn to the Single test menu Note Consider any displayed warning before starting measurement 6 2 Insulation resistance This test ensures that the resistances between mains terminals and protective conductor of the appliance mains supply plug or each metal part of the appliance housing are satisfactory and of sufficiently high value Test measurement parameters can be selected according to requirem...

Страница 23: ...le insulation resistance measurement Select Insulation in Single test menu by using and cursor keys and press ENTER key to confirm Insulation menu is displayed Insulation menu Measurement parameters are detailed in the lower left corner of the display The following parameters can be adjusted in this measurement test voltage low limit resistance value and measurement duration Use and cursor keys to...

Страница 24: ...ment or before it is automatically discharged 6 3 Substitute leakage current This test determines the current that will leak through the appliance into ground if the test voltage is the nominal mains supply voltage for the appliance The current flowing at test voltage of 40VAC is measured and scaled to the appliance mains supply voltage 110VAC or 230VAC 6 3 1 Substitute leakage current on class I ...

Страница 25: ...ters can be adjusted in this measurement high limit leakage value and measurement duration Use and cursor keys to select the parameter you want to edit Use and cursor keys to adjust the selected parameter Press START key to perform measurement Examples of substitute leakage current measurement results The measurement can be aborted by pressing START key at any time Actual result is shown on the di...

Страница 26: ...ue appliance leakage current is always measured although there can exist parallel current paths to ground Also the apparent power is measured By checking the power an efficient functional test can be performed CLASS APPLIANCE UNDER TEST I Measuring of leakage current and power 6 4 1 How to perform single leakage current measurement Select Leakage in Single test menu by using and cursor keys and pr...

Страница 27: ...o prevent possible danger to operator or damage to the appliance Consider any displayed warning before starting measurement 6 5 Touch leakage current This test determines the current that would flow if a person touches the appliance Measurement is based on a human body model with resistance of 2kΩ Both AC and DC components of touch leakage current are detected CLASS APPLIANCE UNDER TEST II accessi...

Страница 28: ...surement time period has elapsed the last measured value is displayed and PASS or FAIL indication appears on the display Press START key to repeat the test or press ESC key to return to the Single test menu Notes The appliance is connected to the mains voltage Make sure that the appliance with moving parts is safely mounted or protected to prevent possible danger to operator or damage to the appli...

Страница 29: ...t or press ESC key to return to the Single test menu Note Consider any displayed warning before starting test 6 7 True RMS current measurement This function enables measuring of AC currents in a wide range from 1mA up to 25A Typical applications are measuring leakage currents through PE conductor in permanently installed appliances measuring load currents through L or N conductor in permanently in...

Страница 30: ...ter you want to edit Use and cursor keys to adjust the selected parameter Press START key to perform measurement Examples of TRMS current measurement results The measurement can be aborted by pressing START key at any time Press START key to repeat the measurement or press ESC key to return to the Single test menu Notes Consider any displayed warning before starting measurement When measuring leak...

Страница 31: ...el directly The complete list of autotest shortcut sequences can be found in Appendices A and B 7 1 1 How to set the autotest shortcut sequence Select Autotest shortcut in Main menu by using and cursor keys and press ENTER key to confirm Autotest shortcut menu is displayed Autotest shortcut menu The autotest sequence can simply be selected by setting few autotest parameters setting the three digit...

Страница 32: ...arameter by using and cursor keys Autotest shortcut code adjustment Use and cursor keys to increase decrease code or enter three digit code using alphanumeric keypad 7 1 4 How to set autotest sequence by using barcode reader Barcode reader can also be used to set three digit code in Autotest custom menu Connect barcode reader to DB 9 female BAR PRINTER TAG connector Connecting barcode reader to th...

Страница 33: ...n be performed Press ESC key to return to the Autotest shortcut menu 7 1 6 How to start autotest shortcut sequence Pressing START key in Autotest shortcut menu starts the pre defined autotest sequence Refer to chapter 7 4 Performing autotest sequences for more information 7 2 Autotest custom menu Autotest custom menu allows setting and editing user defined autotest procedures 20 autotest sequences...

Страница 34: ...isabled mode the selected measurement will be skipped In single mode one measurement will be performed In continuous mode up to five repetitive measurements will be performed By using and cursor keys select the measurement By using and cursor keys measurement parameters can be selected Use and cursor keys to adjust the selected parameter Adjusting measurement parameters 7 2 2 How to save the autot...

Страница 35: ...he list 7 2 4 How to start custom autotest sequence In Autotest custom menu select the test sequence you want to execute by using and cursor keys By pressing START key the selected autotest sequence is started Refer to chapter 7 4 Performing autotest sequence for more information 7 3 Autotest TAG menu Autotest sequence and measurement results can be entered in the AlphaPAT instrument by using RFID...

Страница 36: ...ffered 7 3 1 How to view autotest sequence from RFID TAG In Autotest TAG menu press F2 key in order to view autotest sequence The following menu is displayed Autotest TAG view autotest sequence menu By using and cursor keys the parameters of the selected measurement can be viewed Press ESC key to return to Autotest TAG menu 7 3 2 How to view and or save autotest results from TAG Refer to chapter 8...

Страница 37: ...e F1 key proceed to the next earth bond resistance measurement in continuous measurement mode only F2 key repeat the earth bond resistance measurement START key proceed to the next autotest sequence measurement ESC key end autotest sequence without saving autotest results 7 4 3 Insulation resistance measurement Notes Consider the displayed warnings before starting measurement For class II applianc...

Страница 38: ...test sequence stops after the leakage current measurement is performed The following actions can be taken to continue or complete autotest sequence F1 key proceed with the next leakage current measurement in continuous measurement mode only F2 key repeat the leakage current measurement START key proceed to the next autotest sequence measurement ESC key end autotest sequence without saving autotest...

Страница 39: ...ESC key end autotest sequence without saving autotest results 7 4 8 TRMS clamp current measurement Note Consider the displayed warnings before starting measurement The autotest sequence stops after the TRMS clamp current measurement The following actions can be taken to continue or complete the autotest sequence F1 key proceed to the next TRMS clamp current measurement in continuous measurement mo...

Страница 40: ...st save results menu is displayed Autotest save results menu Press ESC key to return to Autotest menu 8 1 1 How to view autotest sequence results By pressing F1 key in Autotest save results menu View results menu will be displayed The performed tests with results and PASS or FAIL status are displayed Autotest sequence results view menu To return to Save results menu press ESC key 8 1 2 How to save...

Страница 41: ...ield is empty 8 1 3 How to download or send autotest sequence results By pressing SEND key in Autotest save results menu Send results menu is displayed Send results menu By using and cursor keys select the action you want to perform Press ENTER key to start the selected activity or press ESC key to return to Autotest save results menu 8 2 Recall results menu In this menu the stored autotest measur...

Страница 42: ...earch for all appropriate tests press ENTER key Recall results menu is displayed if at least one stored autotest result was found Recall results menu Press ENTER key to view test results of the selected test View results menu Press ESC key to return to Recall results menu 8 2 2 How to delete saved autotest results The following stored results can be deleted by pressing CLR key in Recall results me...

Страница 43: ...ed or all found test results can be sent to PC printer or RFID TAG By pressing SEND key in Recall results menu Send results menu is displayed Send results menu By using and cursor keys select the action you want to perform Press ENTER key to start the selected activity or press ESC key to return to Recall results menu ...

Страница 44: ...age current measurement the displayed value is automatically calculated to 110 V when adapter is connected to the instrument 9 1 1 How to perform measurements by using 110 V adapter In order to test 110 V appliance first connect 110 V adapter to the main test socket of the instrument Connecting 110 V adapter to the instrument If the 110 V adapter is connected to the test socket the following scree...

Страница 45: ...owing menu is displayed Date and time menu By using and keys the date or time field can be selected To set date and or time use and cursor keys Notes Date is attached to the saved autotest results Date format is DD MM YYYY day month year Date entry is checked for regularity and not accepted in case of irregular date 10 1 2 Display contrast adjustment Select Contrast in Setup menu by using and curs...

Страница 46: ...ducer name instrument name serial number firmware version and hardware version Select Instrument data in Setup menu by using and cursor keys and press ENTER Instrument data menu is displayed Instrument data menu Note Operator cannot change any instrument data 10 1 5 Serial communication port settings Two serial ports on the instrument are intended for communication with different equipment One is ...

Страница 47: ...ansfer control uses XON CTRL Q and XOFF CTRL S characters Hardware control uses DTR line 10 1 6 Reset instrument settings In this menu the following parameters can be set to their initial values all measurement parameters in single test mode user defined tests are cleared 20 autotest sequences with all measurements disabled are added all menus are set to initial structure PC baud rate is set to 11...

Страница 48: ...s F1 and F2 if malfunction of mains output voltage on test socket is noticed F3 T1 6A 250V 20 x 5mm instrument protection Check the fuse when the instrument does not respond after connection to mains supply Position of fuses To change the fuse Disconnect all test leads and the instrument mains cord before removing fuse cover Unscrew screws on fuse cover position 6 of bottom part and remove cover R...

Страница 49: ...aPAT MI2142 There are no user replaceable components inside the instrument except three fuses refer to chapter 11 2 Fuses 11 4 Cleaning Use soft patch slightly moistened with soap water or alcohol to clean the surface of AlphaPAT MI21242 Leave the instrument to dry totally before using it Notes Do not use liquids based on petrol or hydrocarbons Do not spill cleaning liquid over the instrument ...

Страница 50: ...sories Standard set Instrument AlphaPAT MI 2142 Soft carrying case Test probe User manual Production verification data Conformity declaration Optional accessories PC software package PATLink with RS232 cable Printer Barcode reader RFID reader writer RFID TAG set 110V test adapter ...

Страница 51: ...For portable and handheld appliances the leakage or touch leakage limits are stricter than for other types For IT equipment the earth bond resistance measurement is performed with low current 100mA in order to avoid any damage to earth connections for EMC screening purposes For cooking and heating appliances the leakage limit is set higher because some leakage typically occurs in the heating eleme...

Страница 52: ...f the appliance has a very long supply cord for instance vacuum cleaners APPLIANCE FUSE 3 A 750 VA 6 A 1 5 kVA 10 A 2 5 kVA 13 A 3 2 kVA Notes The earth bond test current depends on the set fuse rating of appliance The current is always at least 1 5 times higher than the fuse rating The power in parenthesis means the maximum power that can be delivered in combination with the set fuse Some users a...

Страница 53: ...ctional check the protective earth test and load test Extension leads test only LENGTH 5 m 7 5 m 10 m 12 m 15 m 20 m 30 m 40 m 50 m CROSS SECTION AREA c s a 0 5 mm2 0 75 mm2 1 0 mm2 1 25 mm2 1 5 mm2 unknown MAXIMUM CURRENT CAPABILITY POWER Imax Power 3 A 750 VA 6 A 1 5 kVA 10 A 2 5 kVA 13 A 3 2kVA 15 A 3 75 kVA unknown Notes If the cross section area is unknown the most conservative as for 1 5mm2 ...

Страница 54: ...V 0 75mA 012 I 3A midd 0 3Ω 10A 1MΩ 500V 013 I 6A midd 0 3Ω 10A 1MΩ 500V 014 I 10A midd 0 3Ω 25A 1MΩ 500V 015 I 13A midd 0 3Ω 25A 1MΩ 500V 016 I 3A long 0 5Ω 10A 1MΩ 500V 0 75mA 017 I 6A long 0 5Ω 10A 1MΩ 500V 0 75mA 018 I 10A long 0 5Ω 25A 1MΩ 500V 0 75mA 019 I 13A long 0 5Ω 25A 1MΩ 500V 0 75mA 020 I 3A long 0 5Ω 10A 1MΩ 500V 021 I 6A long 0 5Ω 10A 1MΩ 500V 022 I 10A long 0 5Ω 25A 1MΩ 500V 023 I ...

Страница 55: ...3A short 0 1Ω 25A 1MΩ 500V 3 5mA 043 I 3A short 0 1Ω 10A 1MΩ 500V 045 I 6A short 0 1Ω 10A 1MΩ 500V 046 I 10A short 0 1Ω 25A 1MΩ 500V 047 I 13A short 0 1Ω 25A 1MΩ 500V 048 I 3A midd 0 3Ω 10A 1MΩ 500V 3 5mA 049 I 6A midd 0 3Ω 10A 1MΩ 500V 3 5mA 050 I 10A midd 0 3Ω 25A 1MΩ 500V 3 5mA 051 I 13A midd 0 3Ω 25A 1MΩ 500V 3 5mA 052 I 3A midd 0 3Ω 10A 1MΩ 500V 053 I 6A midd 0 3Ω 10A 1MΩ 500V 054 I 10A midd ...

Страница 56: ...087 12 0 3Ω 25A 1MΩ 500V 088 15 0 4Ω 25A 1MΩ 500V 089 20 0 5Ω 25A 1MΩ 500V 090 30 0 7Ω 25A 1MΩ 500V 091 40 0 9Ω 25A 1MΩ 500V 092 50 1 0Ω 25A 1MΩ 500V 093 1 25 mm 2 13A 5m 0 2Ω 25A 1MΩ 500V 094 7 5 0 2Ω 25A 1MΩ 500V 095 10 0 3Ω 25A 1MΩ 500V 096 12 0 3Ω 25A 1MΩ 500V 097 15 0 3Ω 25A 1MΩ 500V 098 20 0 4Ω 25A 1MΩ 500V 099 30 0 6Ω 25A 1MΩ 500V 100 40 0 7Ω 25A 1MΩ 500V 101 50 0 9Ω 25A 1MΩ 500V 102 1 5 mm...

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