METREL AlphaPAT Instruction Manual
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METREL AlphaPAT Instruction Manual

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AlphaPAT
MI 2142
Instruction manual
Ver. 1.2. Code no. 20 750 748

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Summary of Contents for METREL AlphaPAT

  • Page 1 AlphaPAT MI 2142 Instruction manual Ver. 1.2. Code no. 20 750 748...
  • Page 2 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.

  • Page 3: Table Of Contents

    MI 2142 AlphaPAT Table of contents General description..........................5 Warnings............................6 Warning markings on connector panel ..................6 Standards applied........................6 Instrument description ........................7 Front panel........................... 7 Connector panels......................... 8 Bottom side..........................9 Safety pre-tests.......................... 10 Meaning of symbols and messages on the instrument display ..........10 Technical specifications........................
  • Page 4 MI 2142 AlphaPAT Table of contents 7.1.6 How to start autotest shortcut sequence ................33 Autotest custom menu ....................... 33 7.2.1 How to view and/or change an existing autotest custom sequence ......... 34 7.2.2 How to save the autotest custom sequence ..............34 7.2.3...

  • Page 5: General Description

    (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 directions between the test instrument and PC.

  • Page 6: Warnings

    1.1 Warnings In order to reach high level of operator safety while carrying out various measurements using AlphaPAT, as well as to keep the test equipment undamaged, it is necessary to consider the following general warnings: If the test equipment is used in manner not specified in this user manual the...

  • Page 7: Instrument Description

    MI 2142 AlphaPAT Instrument description 2 Instrument description 2.1 Front panel ENTER pqrs wxyz Help START Send 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.

  • Page 8: Connector Panels

    MI 2142 AlphaPAT Instrument description 2.2 Connector panels WARNING! Earth wander lead Connector panels Legend: 1....Test socket Warning! Maximum output current is 16 A, test only appliances with maximum rated supply current not higher than 16 A! 2....IEC lead connector Warning! The connector input is only for test purposes;...

  • Page 9: Bottom Side

    MI 2142 AlphaPAT Instrument description 2.3 Bottom side Bottom side Legend: 1....Plastic cover 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....

  • Page 10: Safety Pre-Tests

    MI 2142 AlphaPAT Instrument description 2.4 Safety pre-tests The instrument makes pre-tests before a regular test of connected appliance to ensure safety and to prevent any damage. These safety pre-tests check for: any external voltage against earth on test socket and test probe,...
  • Page 11 MI 2142 AlphaPAT Instrument description It is very likely that fuses will blow after applying power to the tested appliance. If the too high current is only of short L-N SHORTED (<3.0Ω)! duration (caused by the short inrush current) the test can be performed otherwise it must be stopped.
  • Page 12 MI 2142 AlphaPAT Instrument description DANGER! Voltage on test socket is higher than 20V (AC or DC) VOLTAGE ON TEST approximately! SOCKET TOO HIGH! Disconnect the connections to the instrument immediately and determine the external voltage source! POSSIBLE DANGER! Voltage on test probe is higher than 15V (AC or DC)

  • Page 13: Technical Specifications

    MI 2142 AlphaPAT Technical specifications 3 Technical specifications 3.1 Earth bond resistance Earth bond resistance readout Range Resolution Accuracy 0.00 Ω ÷ 19.99 Ω 0.01 Ω ±(5 % of reading + 3 digits) Test currents..... 25 A, 10 A, 100 mA into 100 mΩ at mains voltage of 230 V AC Open circuit voltage ..

  • Page 14: Leakage Current And Apparent Power

    MI 2142 AlphaPAT Technical specifications 3.4 Leakage current and apparent power Differential leakage current readout Range Resolution Accuracy 0.00 mA ÷ 19.99 mA ±(5 % of reading + 5 digits) 0.01 mA Pass levels ....0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA, 2.25 mA, 2.50 mA, 3.00 mA, 3.50 mA, 9.90 mA...

  • Page 15: Trms Current

    MI 2142 AlphaPAT Technical specifications 3.7 TRMS current True RMS current readout using 1000:1 current clamp Range Resolution Accuracy* 0.00 mA ÷ 9.99 mA ±(5 % of reading + 5 digits) 0.01 mA 10.0 mA ÷ 99.9 mA 0.1 mA ±(5 % of reading + 5 digits)
  • Page 16 MI 2142 AlphaPAT Technical specifications Storage conditions Temperature range ......-10 °C ÷ +70 °C Maximum relative humidity ....90 % RH (-10 °C ÷ +40 °C) 80 % RH (40 °C ÷ 60 °C) Accuracies apply for 1 year in reference conditions. Temperature coefficient outside these limits is 0,2 % of measured value per °C, and 1 digit.

  • Page 17: Main Menu And Test Modes

    Main menu and test modes 4 Main menu and test modes The AlphaPAT instrument uses user-friendly manipulation. By using only a few keys most of the actions can be done. Menu tree of the instrument is simple to understand and easy to operate.

  • Page 18: Autotest Shortcut Menu

    MI 2142 AlphaPAT Main menu and test modes Note: Press ESC key one or more times to return to Main menu from any submenu or selected function. 4.2.1 Autotest shortcut menu In this menu one of 120 pre-defined autotest sequences can be selected and performed.

  • Page 19: Autotest Tag Menu

    MI 2142 AlphaPAT Main menu and test modes See chapter 8 Saving and recalling autotest results for detailed description about recalling results. 4.2.5 Autotest TAG menu Autotest sequence and measurement results for tested appliance can be downloaded (uploaded) from (to) the RFID TAG.

  • Page 20: Single Test Mode

    MI 2142 AlphaPAT Single test mode 5 Single test mode In single test mode individual tests can be performed. This is especially helpful when you suspect one or more faults in the tested appliance. Note: The measurement results cannot be saved in this mode! 5.1 How to perform measurements in single test mode...

  • Page 21: Measurements

    MI 2142 AlphaPAT Measurements 6 Measurements 6.1 Earth bond resistance This test ensures that the connections between the protective conductor terminal in the mains plug of the appliance and each conductive part of the appliance housing are satisfactory and of sufficiently low resistance.

  • Page 22: Insulation Resistance

    MI 2142 AlphaPAT Measurements cursor keys to select the parameter you want to edit. Use cursor keys to adjust the selected parameter. Press START key to perform measurement. Examples of earth bond resistance measurement results The measurement can be aborted by pressing START key at any time.

  • Page 23: Insulation Resistance On Class Ii Appliances

    MI 2142 AlphaPAT Measurements 6.2.2 Insulation resistance on class II appliances For class II appliances and non-earthed parts of safety class I appliances insulation resistance is measured between short-circuited mains terminals in the appliance mains plug and external conductive parts, which can be contacted with the test probe.

  • Page 24: Substitute Leakage Current

    MI 2142 AlphaPAT Measurements Actual result is shown on the display during measurement. After measurement time 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.

  • Page 25: How To Perform Single Substitute Leakage Current Measurement

    MI 2142 AlphaPAT Measurements CLASS APPLIANCE UNDER TEST Measurement of substitute leakage current of class II appliance 6.3.3 How to perform single substitute leakage current measurement Select Sub leakage in Single test menu by using cursor keys and press ENTER key to confirm. Sub leakage menu is displayed.

  • Page 26: Leakage Current And Power

    MI 2142 AlphaPAT Measurements Notes: Consider any displayed warning before starting measurement! Substitute leakage current may differ substantially from that of conventional leakage current test because of the way the test is performed. For example, the difference in both leakage measurements will be affected by the presence of neutral to earth noise suppression capacitors.

  • Page 27: Touch Leakage Current

    MI 2142 AlphaPAT Measurements Examples of leakage current and apparent power measurement results The measurement can be aborted by pressing START key at any time. Actual result is shown on the display during measurement. After measurement time period has elapsed the last measured value is displayed, and PASS or FAIL indication appears on the display.

  • Page 28: Polarity Test

    MI 2142 AlphaPAT Measurements Measurement parameters are detailed in the lower left corner of the display. The following parameters can be adjusted in this measurement: high limit leakage value and measurement duration. cursor keys to select the parameter you want to edit. Use cursor keys to adjust the selected parameter.

  • Page 29: How To Perform The Measurement

    MI 2142 AlphaPAT Measurements 6.6.1 How to perform the measurement Select Polarity test in Single test menu by using cursor keys and press ENTER key to confirm. Polarity test menu is displayed. Polarity test menu Press START key to perform test.
  • Page 30 MI 2142 AlphaPAT Measurements Connecting current clamp to the AlphaPAT instrument Select Current clamp in Single test menu by using cursor keys and press ENTER key to confirm. Current clamp menu is displayed. Current clamp menu Measurement parameters are detailed in the lower left corner of the display. The...

  • Page 31: Autotest Modes

    All limits and tests are in compliance with currently valid standards and regulations. In case of any changes, new firmware will be available at your distributor or from Metrel directly. The complete list of autotest shortcut sequences can be found in Appendices A and B.

  • Page 32: How To Set Or Enter Autotest Shortcut Code

    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 the AlphaPAT instrument The code read from the barcode label will be adopted In Autotest shortcut menu when two short beeps are emitted.

  • Page 33: How To View Autotest Shortcut Sequence Measurement Parameters

    MI 2142 AlphaPAT Autotest modes 7.1.5 How to view autotest shortcut sequence measurement parameters After pressing ENTER key in Autotest shortcut menu the measurement parameters of the selected autotest sequence are detailed. Autotest shortcut view menu By using cursor keys the parameters of the selected measurement can be viewed.

  • Page 34: How To View And/Or Change An Existing Autotest Custom Sequence

    MI 2142 AlphaPAT Autotest modes 7.2.1 How to view and/or change an existing autotest custom sequence By using cursor keys in Autotest custom menu select the autotest sequence you want to view and/or change and press ENTER key to confirm. Autotest custom view menu is displayed.

  • Page 35: How To Delete An Existing Custom Test Sequence From The List

    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 TAGs together with RFID reader/writer. To use RFID system connect RFID reader/writer to DB-9 female BAR./PRINTER/TAG connector first.

  • Page 36: How To View Autotest Sequence From Rfid Tag

    MI 2142 AlphaPAT Autotest modes Autotest RFID TAG menu The AlphaPAT instrument is now ready to accept the RFID TAG data. Once the data from RFID TAG have been successfully received, the following menu is displayed: Autotest TAG menu The following actions can be performed now: F1 ......

  • Page 37: Performing Autotest Sequences

    MI 2142 AlphaPAT Autotest modes 7.4 Performing autotest sequences 7.4.1 Visual inspection During visual inspection damages of the following items should be identified: appliance case, appliance mains fuse, and appliance supply cable. Visual test menu In case any damage on the appliance is noticed press F2 key in order to identify the visual test as failed.

  • Page 38: Substitute Leakage Current Measurement

    MI 2142 AlphaPAT Autotest modes 7.4.4 Substitute leakage current measurement Notes: Consider the warnings on the display before starting measurement! For class II appliances the test probe is used! The autotest sequence stops when substitute leakage current measurement is performed. The following actions can be taken to continue or complete autotest sequence: F1 key.......

  • Page 39: Polarity Test

    MI 2142 AlphaPAT Autotest modes 7.4.7 Polarity test Note: Consider the warnings on the display before starting measurement! The autotest sequence stops after the polarity test. The following actions can be taken to continue or complete autotest sequence: F2 key....... repeat the polarity test START key ....

  • Page 40: Saving And Recalling Autotest Results

    MI 2142 AlphaPAT Saving and recalling autotest results 8 Saving and recalling autotest results After the autotest sequence is completed measurement results can be: saved to the flash memory of the instrument, sent to PC, stored to RFID TAG, or test report can be printed out to serial printer.

  • Page 41: How To Download Or Send Autotest Sequence Results

    MI 2142 AlphaPAT Saving and recalling autotest results By using cursor keys select parameter you want to edit. In Appliance name field and Note field up to 10 alphanumeric characters can be entered. Appliance name can be read with a barcode reader.

  • Page 42: How To Delete Saved Autotest Results

    MI 2142 AlphaPAT Saving and recalling autotest results When searching for stored autotests the following filters can be used to narrow the hits: appliance name, date from, and date to. By using cursor keys select the filter you want to edit. Up to 10 alphanumeric characters can be entered in Appliance name field.

  • Page 43: How To Download Or Send Stored Autotest Results

    MI 2142 AlphaPAT Saving and recalling autotest results 8.2.3 How to download or send stored autotest results Selected or all found test results can be sent to: printer, or RFID TAG. By pressing SEND key in Recall results menu, Send results menu is displayed.

  • Page 44: Measuring 110 V Appliances

    Measuring 110V appliances 9 Measuring 110 V appliances 9.1 110 V adapter The AlphaPAT instrument allows measurements of 110 V appliances. When the 110 V adapter is used only the following measurements can be performed: earth bond resistance, insulation resistance, substitute leakage current, and TRMS current.

  • Page 45: Other Instrument Operations

    MI 2142 AlphaPAT Other instrument operations 10 Other instrument operations 10.1 Setup menu In Setup menu the general instrument parameters can be configured and saved. To enter Setup menu select Setup in Main menu using keys and press ENTER key to confirm. Setup menu is displayed.

  • Page 46: Language Selection

    MI 2142 AlphaPAT Other instrument operations 10.1.3 Language selection Select Language in Setup menu by using cursor keys and press ENTER. The following menu is displayed: Language menu By using cursor keys select language you want to use. Press ENTER key to accept the new language or press ESC key to return to Setup menu without any change.

  • Page 47: Reset Instrument Settings

    MI 2142 AlphaPAT Other instrument operations By using cursor keys in Baud rate menu to select baud rate you want to use and press ENTER key to confirm. Baud rate setting BAR/TAG/PRINTER serial port has a fixed baud rate (set to 9600 baud) but it is possible to select the printer data transfer protocol.

  • Page 48: Maintenance

    MI 2142 AlphaPAT Maintenance 11 Maintenance 11.1 Periodic calibration It is essential that all measurement instruments are regularly calibrated. We recommend an annual calibration. 11.2 Fuses There are three fuses under fuse cover: F1 = F2 = T16A / 250V: intended for protection of test socket.

  • Page 49: Service

    For repairs under or out of warranty time please contact your distributor for further information. Unauthorized person is not allowed to open the AlphaPAT MI2142. There are no user replaceable components inside the instrument, except three fuses (refer to chapter 11.2 Fuses).

  • Page 50: Instrument Set And Accessories

    MI 2142 AlphaPAT Instrument set and accessories 12 Instrument set and accessories 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...
  • Page 51 MI 2142 AlphaPAT Appendix A Appendix A Autotest shortcut parameters APPLIANCE TYPE portable or handheld appliances IT (information technology) equipment (EN60950) heating and cooking appliances other appliances extension leads Most electrical appliances belong to one of these above-mentioned types. The tests and limits differ slightly depending on the specific regulation.
  • Page 52 MI 2142 AlphaPAT Appendix A APPLIANCE SAFETY CLASS SC I SC II SUPPLY CORD Short Middle (or low c.s.a) Long Notes: The earth bond limit depends significantly on the supply cord length and its PE wire cross-section. SHORT should be set for appliances with a cord not longer than 5m.
  • Page 53 This test can also be performed without the measuring instrument. However it is advisable to perform this test with the AlphaPAT instrument, since it performs more tests simultaneously: the functional check, the protective earth test, and load test.
  • Page 54 MI 2142 AlphaPAT Appendix B Appendix B Autotest shortcut codes Type Class Fuse Cord Earth Bond Insulation S. Leakage Leakage T. Leakage Code Limit Limit Limit Limit Limit Portable or Handheld short 0.1Ω 1MΩ 500V 0.75mA short 0.1Ω 1MΩ 500V 0.75mA...
  • Page 55 MI 2142 AlphaPAT Appendix B Type Class Fuse Cord Earth Bond Insulation S. Leakage Leakage T. Leakage Code Limit Limit Limit Limit Limit IT equipment EN 60950 short 0.1Ω 0.1A 1MΩ 500V 3.5mA midd 0.3Ω 0.1A 1MΩ 500V 3.5mA long 0.5Ω...
  • Page 56 MI 2142 AlphaPAT Appendix B Length Earth Bond Insulation Polarity Code Limit Limit IEC leads 0.5 mm / 3 A <=5m 0.3Ω 1MΩ 500V 0.4Ω 1MΩ 500V 0.5Ω 1MΩ 500V 0.6Ω 1MΩ 500V 0.7Ω 1MΩ 500V 0.9Ω 1MΩ 500V 2.0Ω...

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