METREL MI3115 Instruction Manual
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METREL MI3115 Instruction Manual

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MI 3115 PV Analyser
Instruction manual
Ver.1.4.4, code no. 20 753 336

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Summary of Contents for METREL MI3115

  • Page 1 MI 3115 PV Analyser Instruction manual Ver.1.4.4, code no. 20 753 336...
  • Page 2 DATA BACKUP AND LOSS: regularly backup and validate the integrity of backups of the data. METREL HAS NO OBLIGATION OR LIABILITY FOR ANY LOSS, ALTERATION, DESTRUCTION, DAMAGE, CORRUPTION OR RECOVERY OF USER DATA, REGARDLESS OF WHERE THE DATA IS STORED.

  • Page 3: Table Of Contents

    MI 3115 PV Analyser Table of Contents ABLE OF ONTENTS General description....................6 Warnings and notes ....................6 1.1.1 Safety warnings ....................6 1.1.2 Warnings related to safety of measurement functions ........7 1.1.3 Notes related to measurement functions ............7 1.1.4 General notes ....................8 1.1.5...
  • Page 4 MI 3115 PV Analyser Table of Contents 5.1.2 Operations on measurements ............... 32 5.1.3 Measurement statuses ................. 33 5.1.4 Operations on Structure objects ..............34 5.1.5 Searching in Memory Organizer ..............34 5.1.6 Changing PV modules and other parameters in already performed measurements ......................
  • Page 5 10.1.6 IEC 62446 Autotest ..................68 10.2 General data ......................68 Appendix A - Remote operation ................70 11.1 Metrel ES Manager ....................70 11.2 Black Box protocol ....................70 11.3 SDK ........................70 Appendix B - Structure objects ................71 Appendix C - Profile Notes ..................72...

  • Page 6: General Description

    • Metrel Auto Sequences® are designed as guidance to tests in order to significantly reduce testing time, improve work scope and increase traceability of the tests performed. Metrel assumes no responsibility for any Auto Sequence by any the selected Auto Sequence.

  • Page 7: Warnings Related To Safety Of Measurement Functions

    MI 3115 PV Analyser General description to fire and can cause heavy damage. Users must be skilled to disconnect the PV system safely in this case. • Do not use the instrument in PV systems with voltages higher than 1500 V d.c. and/or currents higher than 20 A d.c.! Otherwise, the instrument can be damaged.

  • Page 8: General Notes

    1.1.4 General notes • LCD screenshots in this document are informative only. Screens on the instrument may be slightly different. • Metrel reserve the right to make technical modifications without notice as part of the further development of the product.

  • Page 9: Markings On The Instrument

    MI 3115 PV Analyser General description 1.1.5 Markings on the instrument Read the Instruction manual with special care to safety operation«. The symbol requires an action! Mark on your equipment certifies that it meets requirements of all subjected EU regulations. Mark on your equipment certifies that it meets requirements of all subjected UK regulations.
  • Page 10 MI 3115 PV Analyser General description EN 62466-2 Photovoltaic (PV) systems. Requirements for testing, documentation and maintenance Part 2: Grid connected systems Maintenance of PV systems...

  • Page 11: Instrument Set And Accessories

    Rechargeable Ni-MH batteries, type AA, 1.2V, 2400 mAh, 6 pcs, (S 2125) • Power supply adapter 12 V, 0.5 A • Calibration certification • PCSW METREL ES manager PRO • Quick guide • Instruction manual (on CD) • Handbook (on CD) See the attached sheet "Included in the...

  • Page 12: Instrument Description

    MI 3115 PV Analyser Instrument description 3 Instrument description Test connector options: Mains supply connector Serial port USB communication port MicroSD card slot Display...
  • Page 13 MI 3115 PV Analyser Instrument description Keypad ON/OFF key Test connector PE terminal DC- terminal DC+ terminal Protection cover P/S (probe) terminal...

  • Page 14: Instrument Operation

    MI 3115 PV Analyser Instrument operation 4 Instrument operation The instrument can be manipulated via a keypad or touch screen. ON / OFF key Switch instrument on / off. To switch off the instrument press key for 2 s. The instrument automatically switches off after 10 minutes of idle state (no key pressed or any touch screen activity).

  • Page 15: General Meaning Of Touch Gestures

    MI 3115 PV Analyser Instrument operation Tap (briefly touch surface with fingertip) is used to: • Select appropriate option. • Confirm selected option. • Start and stop measurements. Swipe (press, move, lift) up/ down is used to: • Scroll content in same level. •...

  • Page 16: Safety Checks, Symbols, Messages

    MI 3115 PV Analyser Instrument operation Activates alphabetic characters. English keyboard layout. Greek keyboard layout. Russian keyboard layout. Returns to the previous menu without changes. Note • If Backspace is held for 2 s, all characters will be selected. Hint Long press on some keys opens additional keys.
  • Page 17 MI 3115 PV Analyser Instrument operation Time synchronization warning. After confirmation A 1785 PV Remote WL accepts time from instrument. Warning that time synchronization is not possible while remote unit is logging. Warning that STC / nominal values cannot be calculated and displayed, due to missing or invalid PV module or environmental data.
  • Page 18 MI 3115 PV Analyser Instrument operation Measurement is running, consider displayed warnings. Warning! A very high and dangerous voltage is / will be present on the instrument output! The instrument automatically discharges tested object after finished insulation measurement. When an insulation resistance measurement has been performed on a capacitive object, automatic discharge may not be done immediately! The warning symbol and the...

  • Page 19: Bluetooth And Wi-Fi Connections

    MI 3115 PV Analyser Instrument operation Test passed. Result is inside predefined limits. Test failed. Result is out of predefined limits. Measurement is aborted. Consider displayed warnings and messages. In R ISO PV and IEC 62446 Autotest function Roc calculation will only be performed, if the test time (duration) elapsed without the user stopping it.

  • Page 20: Battery Indication

    MI 3115 PV Analyser Instrument operation The terminal voltage monitor displays voltage and active test terminals indication. PE terminal should also be connected for correct input voltage condition. DC+ and PE are active test terminals. DC- and PE are active test terminals. DC+ and DC- are active test terminals.

  • Page 21: General Settings Menu

    MI 3115 PV Analyser Instrument operation Single Test Menu for selecting single tests Auto Sequences® Menu for selecting Auto sequences Memory Organizer Menu for working with structured test objects and measurements General Settings Menu for setup of the instrument In the General Settings menu general parameters and settings of the instrument can be viewed or set.

  • Page 22: Settings

    MI 3115 PV Analyser Instrument operation Settings Setting different system and measuring parameters Bluetooth init. Bluetooth / Wi-Fi modul initialization Initial Settings Factory settings About Instrument data 4.6.1 Settings Touch screen Set Touch screen on / off. Keys & touch sound Set key touch sound on / off.

  • Page 23: Wi-Fi Settings

    MI 3115 PV Analyser Instrument operation 4.6.2 Wi-Fi settings Refer to chapter Communication with A 1785 PV Remote WL and A 1785 PV Remote WL Instruction manual for detailed information. 4.6.3 Bluetooth initialization In this menu internal Bluetooth / Wi-Fi module is reset. 4.6.4 Initial Settings In this menu internal Bluetooth / Wi-Fi module will be initialized and the instrument settings, measurement parameters and limits will be set to initial (factory) values.

  • Page 24: About

    MI 3115 PV Analyser Instrument operation 4.6.5 About In this menu instrument data (name, serial number, FW (firmware) and HW (hardware) version, profile code, HD (hardware documentation) version, and date of calibration) can be viewed. 4.6.6 User Accounts The instrument has a User Accounts system. Following actions can be managed: •...

  • Page 25: Managing Accounts

    MI 3115 PV Analyser Instrument operation User sign out: select Sign out Change user password (individual users can change their password): Select Change password, set new password. Account manager sign out: is automatic by exiting the Account manager menu. 4.6.7 Managing accounts User Accounts can be managed by the Account manager.

  • Page 26: Instrument Profiles

    MI 3115 PV Analyser Instrument operation The instrument uses specific system and measuring settings in regard to the scope of work or country it is used. These specific settings are stored in instrument profiles. By default, each instrument has at least one profile activated. Proper licence keys must be obtained to add more profiles to the instrument.
  • Page 27 Workspaces are stored on microSD card on directory PROJECTS, while Exports are stored on directory EXPORTS. Export files can be read by Metrel applications that run on other devices. Exports are suitable for making backups of important works or can be used for storage of works if the removable microSD card is used as a mass storage device.

  • Page 28: Auto Sequence® Groups

    MI 3115 PV Analyser Instrument operation Import Import selected Export to a Workspace Delete Delete selected Export The Auto Sequences in the instrument can be organized by using lists. In a list a group of similar Auto Sequences is stored. The Auto Sequence® groups menu is intended to manage with different lists.

  • Page 29: Pv Modules

    MI 3115 PV Analyser Instrument operation 4.10 In this menu a list of PV modules and their data can be managed. The PV modules data from this list is used in measurements, for calculation of nominal and STC results. 4.10.1 Operations on list of PV module Select Select PV module...

  • Page 30: Import Of List Of Pv Modules

    Serial resistance of PV module 4.10.3 Import of list of PV modules The list of PV modules can also be prepared in Metrel ES Manager and imported to the instrument. Refer to Metrel ES Manager Instruction manual for detailed information.

  • Page 31: Memory Organizer

    MI 3115 PV Analyser Memory Organizer 5 Memory Organizer Memory Organizer is an environment for storing and working with test data. The data is organized in a multilevel tree structure with Structure objects and Measurements. For a list of available structure objects see Appendix B - Structure objects.

  • Page 32: Operations On Measurements

    MI 3115 PV Analyser Memory Organizer 5.1.2 Operations on measurements Start Test Start a new measurement Clone Copy selected measurement as an empty measurement under the same Structure object Copy, Paste Copy a selected measurement as an empty measurement to any location in structure tree Add Measurement Add an empty measurement...

  • Page 33: Measurement Statuses

    MI 3115 PV Analyser Memory Organizer 5.1.3 Measurement statuses Measurement statuses indicate the status of a measurement or a group of measurements in the Memory Organizer. Statuses of Single tests Passed finished single test with test results Failed finished single test with test results Finished single test with test results and no status Empty single test without test results...

  • Page 34: Operations On Structure Objects

    MI 3115 PV Analyser Memory Organizer 5.1.4 Operations on Structure objects Start Test Start a new measurement (proceeds to menus for selection of measurement) Parameters View / edit parameters Add Measurement Add a new empty measurement. Menu for adding new measurement will open Add Structure Add a new structure element...

  • Page 35: Changing Pv Modules And Other Parameters In Already Performed Measurements

    MI 3115 PV Analyser Memory Organizer Header line (Workspace), Search Enter Search menu Search Search according to structure element name and status Clear filters Clear set filters in Search menu Operations on found structure objects Header line (Page x/y), Next Page, Go Page Up / Down Previous Page Go to location...
  • Page 36 MI 3115 PV Analyser Memory Organizer • Nominal and STC values will change accordingly. Measured data and environmental data will stay the same. After update is finished, confirmation with number of updated structures and measurements is displayed. All updated structures and measurements are saved automatically. Undo is not possible. Procedure on selected measurement In selected measurement in Memory Organizer, enter Parameters to edit: Module,...

  • Page 37: Single Tests

    MI 3115 PV Analyser Single tests 6 Single tests In single test main menu two modes for selecting single tests are available. Groups View groups of similar tests Last used View last made measurements In the Single test screens main measuring results, sub-results, limits and parameters of the measurement are displayed.

  • Page 38: Single Test Start Screen

    MI 3115 PV Analyser Single tests 6.2.1 Single test start screen Start test Start single test Parameters, or tap on Parameters field Set parameters/ limits of single test Prev Previous screen Next Next screen Calibrate Compensation of test leads (R low) Help View help screens Add comments before the test (applicable on R low only): In the Parameters menu...

  • Page 39: Single Test Result Screen

    MI 3115 PV Analyser Single tests 6.2.3 Single test result screen Start test Start a new single test Save Save the result A new measurement was started from a The measurement will be saved under the Structure object in the structure tree selected Structure object A new measurement was started from the Saving under the last selected Structure...

  • Page 40: Editing Graphs

    MI 3115 PV Analyser Single tests 6.2.4 Editing graphs Options for editing graphs (start screen or after measurement is finished) Plot edit Open control panel for editing graphs y-range Up Increase scale factor for y-axis y-range Down Decrease scale factor for y-axis Prev Move cursor left on x-axis Next...

  • Page 41: Single Test (Inspection) Start Screen

    MI 3115 PV Analyser Single tests Overall status Options Status fields Child items Item 6.3.1 Single test (inspection) start screen Start test Start the inspection Help View help screens 6.3.2 Single test (Inspection) screen during test Header line (name of inspection), Apply or clear the overall status to complete apply Pass or Fail or Checked or Clear inspection...

  • Page 42: Single Test (Inspection) Result Screen

    MI 3115 PV Analyser Single tests Hint Tap on or use key to set status. Rules for automatic applying of statuses The parent items will automatically • The fail status has highest priority. A fail get a status on base of statuses in status for any item will result in a fail status child items in all parent items and an overall fail result.

  • Page 43: Environmental Data

    MI 3115 PV Analyser Single tests A new inspection was started from the Saving under the last selected Structure Single test main menu object will be offered by default. The user can select another Structure object or create a new Structure object. By pressing the Save key in Memory organizer menu the inspection is saved under selected location.

  • Page 44: On-Line Synchronization Of Environmental Data Between Pv Remote Wl And Instrument

    MI 3115 PV Analyser Single tests The best working practice is to establish a permanent on-line wireless connection between the A 1785 PV remote WL and the instrument during the tests. If the wireless connection is established between the PV remote WL and the instrument during the PV test the environmental data from the remote unit will be automatically sent to the instrument and considered in the test.

  • Page 45: Synchronization Of Environmental Data Between Pv Remote Wl And Instrument After The Test

    MI 3115 PV Analyser Single tests After the test, check the results on the instrument. 6.4.2 Synchronization of environmental data between PV Remote WL and instrument after the test Following data are logged with PV remote WL and can be synchronized with the instrument later: Irradiance at time of measurement Tcell...

  • Page 46: Manual Entry Of Environmental Data

    MI 3115 PV Analyser Single tests each successful Wi-Fi connection. However, it is recommended to regularly check the Date & time on PV Remote WL. • If PV Remote WL time is ahead of the displayed. • Once a PV measurement was updated with valid data from the PV Remote WL, further updates are not possible.

  • Page 47: Single Test Measurements

    MI 3115 PV Analyser Single tests Once the stored measurements from selected workspace are synchronized/updated with data from A 1785 - PV Remote WL, parameter Environmental data is changed from Manual to Remote. Note • 6.5.1 Visual inspection Test results / sub-results Pass, Fail, Checked Test circuit 6.5.2 R low, 200 mA resistance measurement...

  • Page 48: Compensation Of Test Leads

    MI 3115 PV Analyser Single tests Test circuits 6.5.3 Compensation of test leads • Resistance of test lead(s) and cables can be compensated. Compensation is possible in R low function. Connection for compensating the resistance of test leads Procedure for compensation of test leads Select single test and its parameters.

  • Page 49: Uoc/Isc

    MI 3115 PV Analyser Single tests Test voltage Uoc_m Measured open-circuit voltage Test parameters Nominal test voltage Uiso [250 V, 500 V, 1000 V, 1500 V] Type of test Type Riso [Roc+, Roc-, Roc] Duration Duration [Off, 5 60 s] Test limits Limit (Roc+) Low limit (Roc+) [Off, Custom, 10 kΩ...
  • Page 50 MI 3115 PV Analyser Single tests Tcell (5 min) PV cell temperature 5 min before test Tcell (10 min) PV cell temperature 10 min before test Tcell (15min) PV cell temperature 15 min before test Tamb Ambient temperature at time of measurement or manual entry Test parameters Number of modules in PV...

  • Page 51: I/U Curve

    MI 3115 PV Analyser Single tests 6.5.6 I/U curve Test results / sub-results Uoc_m Measured open-circuit voltage Isc_m Measured short-circuit current Umpp_m Measured voltage (MPP) Impp_m Measured current (MPP) Pmpp_m Measured maximum power point Open-circuit voltage (STC) Short-circuit current (STC) Umpp Voltage (MPP, STC) Impp...
  • Page 52 MI 3115 PV Analyser Single tests Relative change of Isc ∆Isc Relative change of Umpp ∆Umpp Relative change of Impp ∆Impp Relative change of Pmpp ∆Pmpp Measured fill factor FF_m FF_n Fill factor (nominal) Graphs I/U (measured) Measured I/U curve P/U (measured) Measured P/U curve I/U (STC)

  • Page 53: Automatic Measurement Iec 62446 Autotest

    MI 3115 PV Analyser Single tests Test limit ∆Pmpp limit (∆Pmpp) High limit (∆Pmpp) [Off, Custom, 5 % 50 %] Test circuit 6.5.7 Automatic measurement IEC 62446 Autotest Test results / sub-results Roc+ Insulation resistance between DC+ and PE Roc- Insulation resistance between DC- and PE Calculated insulation resistance Test voltages...

  • Page 54: Environment

    MI 3115 PV Analyser Single tests Duration Duration [5 s 60 s] Number of modules in PV Number of PV modules in series [Custom, 1 string Number of PV strings Number of PV modules / strings in parallel [Custom, 1 Module PV module name Parameters: Manufacturer, Pmax, Umpp, Impp, Uoc, Isc,...
  • Page 55 MI 3115 PV Analyser Single tests Irradiance at time of measurement Tcell PV cell temperature at time of measurement Tamb Ambient temperature at time of measurement Tcell (5 min) PV cell temperature 5 min before test Tcell (10 min) PV cell temperature 10 min before test Tcell (15 min) PV cell temperature 15 min before test Test circuit...

  • Page 56: Auto Sequences

    7 Auto Sequences® Auto Sequences® are pre-programmed sequences of measurements. The Auto Sequences can be pre-programmed on PC with the Metrel ES Manager software and uploaded to the instrument. On the instrument, parameters and limits of individual single test in the Auto Sequence can be changed / set.

  • Page 57: Organization Of Auto Sequences® In Auto Sequences® Menu

    MI 3115 PV Analyser Auto Sequences® 7.1.1 Organization of Auto Sequences® in Auto Sequences® menu The Auto Sequence® menu can be organized in a structural manner with folders, sub-folders and Auto Sequences. Auto Sequence in the structure can be the original Auto Sequence or a shortcut to the original Auto Sequence.

  • Page 58: Auto Sequence® View Menu

    MI 3115 PV Analyser Auto Sequences® 7.2.1 Auto Sequence® view menu Header is selected Auto Sequence name Description Options Single tests Header Start Test Start of Auto Sequence Single test is selected Auto Sequence name Parameters / limits of selected single test Multiple points selected Options Single tests...

  • Page 59: Indication Of Loops

    MI 3115 PV Analyser Auto Sequences® Enable multiple points testing: set multiple points, see Managing multiple points. 7.2.2 Indication of Loops programmed. This means that the marked single test will be carried out as many times as the individual measurement. 7.2.3 Managing multiple points If the device under test has more than one test point for an individual single test and the selected Auto Sequence predicts only one test point (one single test) it is possible to change...

  • Page 60: Auto Sequence Result Screen

    MI 3115 PV Analyser Auto Sequences® For the actual list and description of flow commands see Metrel ES Manager Software help file. The offered options in the control panel depend on the selected single test, its result and the programmed test flow.
  • Page 61 MI 3115 PV Analyser Auto Sequences® Description Status of single test Single tests Start Test Start a new Auto Sequence View View results of individual measurements. Comment Add comment to Auto Sequence Tap on Single test Viewing details of individual single tests, add comment on individual single test Save results Save the Auto Sequence results...

  • Page 62: Maintenance

    MI 3115 PV Analyser Maintenance 8 Maintenance It is essential that all measuring instruments are regularly calibrated in order for the technical specification listed in this manual to be guaranteed. We recommend an annual calibration. For repairs under or out of warranty please contact your distributor for further information. Unauthorized person is not allowed to open the instrument.

  • Page 63: Communications

    • Tree structure from Metrel ES Manager PC software can be uploaded to the instrument. • PV module list from Metrel ES Manager PC software can be uploaded to the instrument. • Custom Auto Sequences® can be uploaded to the instrument or downloaded and stored to a PC.
  • Page 64 MI 3115 PV Analyser Communications Place instrument and PV Remote WL close to each other. Switch on both, the instrument and PV Remote WL to synchronize time. Date & time synchronization occurs automatically every time when instrument and PV Remote WL are switched on. If Remote time is ahead of the instrument s time, warning message is displayed.

  • Page 65: Technical Specifications

    MI 3115 PV Analyser Technical specifications 10 Technical specifications 10.1 10.1.1 R ISO PV Insulation resistance General Nominal d.c. test voltages U ..... 250 V, 500 V, 1000 V, 1500 V Open-circuit voltage ......-0 % / +20 % of nominal voltage ...

  • Page 66: R Low - 200 Ma Resistance Measurement

    System voltage ........Maximum current ........20 A Maximum power of PV string ....24 kW Connection ..........standard 4 mm METREL safety banana jacks I-U curve tracking points ......min. 512 points (time equidistant) Sampling rate ......... Accuracy of STC values is based on accuracy of measured electrical quantities, accuracy of environmental parameters, and entered parameters of PV module.

  • Page 67: Uoc/Isc Measurements

    Maximum current ........20 A Maximum power of PV string ....24 kW Connection ..........standard 4 mm METREL safety banana jacks Accuracy of STC values is based on accuracy of measured electrical quantities, accuracy of environmental parameters, and entered parameters of PV module. See...

  • Page 68: Environmental

    MI 3115 PV Analyser Technical specifications DC current Range (A) Resolution (A) Accuracy 3.99 0.01 ±(1 % of reading + 8 digits) Isc_m 19.99 0.01 ±(1 % of reading + 4 digits) The error in operating conditions could be at most the error for reference conditions ±2 % of measured value.

  • Page 69: Environmental Conditions

    MI 3115 PV Analyser Technical specifications Display Display ..........Colour TFT display, 4.3 , 480 x 272 pixels Touch screen ........Capacitive Memory Memory card slot ......... microSD card, up to 512 GB Connectivity RS232 ........... 1 port, DB9 female USB ............

  • Page 70: Appendix A - Remote Operation

    For more information contact Metrel or distributor. 11.3 SDK is a powerful interface for data communication with Metrel test instruments. The SDK itself is a set of subroutine definitions, protocols, and tools for building application software. It is intended for those who want to develop software using .NET platform and need to interface with Metrel instruments.

  • Page 71: Appendix B - Structure Objects

    MI 3115 PV Analyser Appendix B - Structure objects 12 Appendix B - Structure objects Structure elements used in Memory Symbol Default name Description Node Node Object Object Inverter PV inverter Combiner box PV Combiner box String PV string Module PV module...

  • Page 72: Appendix C - Profile Notes

    MI 3115 PV Analyser Appendix C - Profile Notes 13 Appendix C - Profile Notes So far there are no specific profile notes for this instrument.

  • Page 73: Appendix D - Pv Measurements - Calculated Values

    MI 3115 PV Analyser Appendix D - PV measurements - calculated values 14 Appendix D - PV measurements - calculated values Calculation to STC Measured voltage �� and current �� are calculated to STC as follows: �� �� �� ⋅ ( �� ������...
  • Page 74 MI 3115 PV Analyser Appendix D - PV measurements - calculated values �� = �� ∙ �� ������ ������,������ ������,������ Equation Instrument Description symbol abbreviation Umpp (STC) Maximum power point voltage calculated to STC �� ������,������ values Impp (STC) Maximum power point current calculated to STC ��...
  • Page 75 MI 3115 PV Analyser Appendix D - PV measurements - calculated values Umpp (STC) Maximum power point voltage calculated to STC �� ������,������ values Impp (NOM) Nominal maximum power point current �� ������,������ Impp (STC) Maximum power point current calculated to STC ��...
  • Page 76 MI 3115 PV Analyser Appendix D - PV measurements - calculated values �� �� ∙ �� ����,�� ����+ ����− �� ∙ ���� �� �� − �� ������ ����+ ����− Equation Instrument Description symbol abbreviation Roc+ Measured resistance between DC+ and PE ��...
  • Page 77 MI 3115 PV Analyser Contacts METREL d.o.o. Ljubljanska cesta 77 SI-1354 Horjul Slovenia Phone: +386 (0)1 75 58 200 Fax: +386 (0)1 75 49 226 Email: info@metrel.si...

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