METREL MI 3116 PV Analyser XA Instruction Manual
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METREL MI 3116 PV Analyser XA Instruction Manual

METREL MI 3116 PV Analyser XA Instruction Manual

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MI 3116 PV Analyser XA
Instruction manual
Ver.1.2.2, code no. 20 753 420

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Summary of Contents for METREL MI 3116 PV Analyser XA

  • Page 1 MI 3116 PV Analyser XA Instruction manual Ver.1.2.2, code no. 20 753 420...
  • 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 3116 PV Analyser XA 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...
  • Page 4 MI 3116 PV Analyser XA 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 MI 3116 PV Analyser XA Table of Contents Communications ....................64 USB and RS232 communication with PC ............... 64 Communication with A 1785 PV Remote WL ............64 Technical specifications ..................66 10.1 Test and measurements ..................66 10.1.1 R ISO PV Insulation resistance ..............66 10.1.2...

  • 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 3116 PV Analyser XA 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.

  • 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 3116 PV Analyser XA 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.
  • Page 10 MI 3116 PV Analyser XA General description EN 62446-2 Photovoltaic (PV) systems. Requirements for testing, documentation and maintenance Part 2: Grid connected systems Maintenance of PV systems...

  • Page 11: Instrument Set And Accessories

    • Short form instruction manual (Quick Guide) • Metrel ES Manager* *Metrel ES Manager and all documentation can be downloaded free of charge from Metrel Web server (https://www.metrel.si/en/downloads/) or Metrel Documentation center (https://doc.metrel.si/). See the attached sheet "Included in the Set".

  • Page 12: Instrument Description

    MI 3116 PV Analyser XA Instrument description 3 Instrument description Test connector options: Mains supply connector Serial port USB communication port MicroSD card slot Display Keypad...
  • Page 13 MI 3116 PV Analyser XA Instrument description ON/OFF key Test connector PE terminal DC- terminal DC+ terminal Protection cover P/S (probe) terminal...

  • Page 14: Instrument Operation

    MI 3116 PV Analyser XA 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.

  • Page 15: General Meaning Of Touch Gestures

    MI 3116 PV Analyser XA 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 3116 PV Analyser XA 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.
  • Page 17 MI 3116 PV Analyser XA 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 3116 PV Analyser XA Instrument operation Synchronization of test results is not possible while remote unit is logging. 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.
  • Page 19 MI 3116 PV Analyser XA Instrument operation AC voltage is detected on measuring terminals. Blown internal fuse The instrument is overheated. The disappears. Test leads resistance in R low measurement is not compensated. Test leads resistance in R low measurement is compensated.

  • Page 20: Bluetooth And Wi-Fi Connections

    MI 3116 PV Analyser XA Instrument operation Hint For some icons more information is displayed if on icon. 4.4.1 Bluetooth and Wi-Fi connections Bluetooth communication active. Bluetooth icon is displayed during data transfer only. Wi-Fi communication with PV Remote WL inactive.

  • Page 21: Instrument Main Menu

    MI 3116 PV Analyser XA Instrument operation Low battery. Battery is too weak to guarantee correct result. Recharge the battery. Empty battery or no battery. Charging in progress (if instrument connected to a.c. power supply). Charging finished. From the instrument Main Menu four main operation menus can be selected.

  • Page 22: Settings

    MI 3116 PV Analyser XA Instrument operation Language Language selection Power Save Brightness of LCD, LCD off timer, enabling/disabling Bluetooth communication Date / Time Setting date and time Workspace Manager Managing project files Auto Sequence® groups Managing lists of Auto Sequences®...

  • Page 23: Bluetooth Initialization

    MI 3116 PV Analyser XA Instrument operation 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: User Accounts

    MI 3116 PV Analyser XA Instrument operation 4.6.6 User Accounts The instrument has a User Accounts system. Following actions can be managed: • Setting if signing in to work with the instrument is required or not. • Adding and deleting new users, setting their user names and passwords.

  • Page 25: Managing Accounts

    MI 3116 PV Analyser XA 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.

  • Page 26: Instrument Profiles

    MI 3116 PV Analyser XA 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 3116 PV Analyser XA 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 3116 PV Analyser XA Instrument operation Open Open the selected Auto Sequence group in the Auto Sequences® main menu. Delete Delete the selected Auto Sequence group. 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.

  • Page 30: Import Of List Of Pv Modules

    • Typical values of bifaciality for bifacial PV modules range between 0.70 and 1.00. 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 3116 PV Analyser XA 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 3116 PV Analyser XA 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...

  • Page 33: Measurement Statuses

    MI 3116 PV Analyser XA 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...

  • Page 34: Operations On Structure Objects

    MI 3116 PV Analyser XA 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...

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

    MI 3116 PV Analyser XA 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,...
  • Page 36 MI 3116 PV Analyser XA 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.

  • Page 37: Single Tests

    MI 3116 PV Analyser XA 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 3116 PV Analyser XA 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)

  • Page 39: Single Test Result Screen

    MI 3116 PV Analyser XA 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...

  • Page 40: Editing Graphs

    MI 3116 PV Analyser XA 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...

  • Page 41: Single Test (Inspection) Start Screen

    MI 3116 PV Analyser XA 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),...

  • Page 42: Single Test (Inspection) Result Screen

    MI 3116 PV Analyser XA 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...

  • Page 43: Environmental Data

    MI 3116 PV Analyser XA 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 3116 PV Analyser XA 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 3116 PV Analyser XA Single tests Procedure In single test starting menu switch Environmental data parameter to Remote. Before the test, check that Wi-Fi connection between PV remote WL and instrument is established. PV remote WL must be logging environmental data. For more information see...

  • Page 46: Manual Entry Of Environmental Data

    MI 3116 PV Analyser XA Single tests Notes • correct Date & time synchronization between PV remote WL and the instrument. Date & time is automatically synchronized at each successful Wi-Fi connection. However, it is recommended to regularly check the Date & time on PV Remote WL.

  • Page 47: Single Test Measurements

    MI 3116 PV Analyser XA Single tests The manually entered environmental data will be used for calculation of STC results until they are updated (synchronized) with measured data from PV Remote WL. Indication of manually entered environmental data Parameter Environmental data indicates the way how environmental data were entered for selected measurement.
  • Page 48 MI 3116 PV Analyser XA Single tests Test limits Limit (R) Limit (R) [Off, Custom, 0.05 Ω 20.0 Ω] Additional options Calibrate Calibrate see Compensation of test leads.

  • Page 49: Compensation Of Test Leads

    MI 3116 PV Analyser XA 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 50: Uoc/Isc

    MI 3116 PV Analyser XA 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]...
  • Page 51 MI 3116 PV Analyser XA Single tests Irr_b Back irradiance at time of measurement (if applicable) Tcell PV cell temperature at time of measurement or manual entry Tcell (5 min) PV cell temperature 5 min before test Tcell (10 min)

  • Page 52: I/U Curve

    MI 3116 PV Analyser XA 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)
  • Page 53 MI 3116 PV Analyser XA Single tests Tamb Ambient temperature at time of measurement or manual entry Relative change of Uoc ∆Uoc Relative change of Isc ∆Isc Relative change of Umpp ∆Umpp Relative change of Impp ∆Impp Relative change of Pmpp ∆Pmpp...

  • Page 54: Automatic Measurement Iec 62446 Autotest

    MI 3116 PV Analyser XA Single tests According to the EN 61829 standard the difference is typically 2 °C. ∆Uoc warning Limit for the improper ∆Uoc warning [Off, 5 % 50 %] User settable when Environmental data = [Manual]. Test limit ∆Pmpp limit (∆Pmpp)
  • Page 55 MI 3116 PV Analyser XA Single tests 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 Uiso Nominal test voltage [250 V, 500 V, 1000 V, 1500 V]...

  • Page 56: Environment

    MI 3116 PV Analyser XA Single tests 6.5.8 Environment Test results / sub-results Irradiance (calculated value) at time of measurement Irr_f Front irradiance at time of measurement Irr_b Back irradiance at time of measurement (if applicable) Tcell PV cell temperature at time of measurement...

  • Page 57: 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 58: Organization Of Auto Sequences® In Auto Sequences® Menu

    MI 3116 PV Analyser XA 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 59: Auto Sequence® View Menu

    MI 3116 PV Analyser XA 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...

  • Page 60: Indication Of Loops

    MI 3116 PV Analyser XA 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.

  • Page 61: Auto Sequence Result Screen

    MI 3116 PV Analyser XA 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 62 MI 3116 PV Analyser XA Auto Sequences® Options 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...

  • Page 63: Maintenance

    MI 3116 PV Analyser XA 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.

  • Page 64: 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 65 MI 3116 PV Analyser XA 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 66: Technical Specifications

    MI 3116 PV Analyser XA 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 67: R Low - 200 Ma Resistance Measurement

    System voltage ........Maximum current ........40 A Maximum power of PV string ....48 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 68: Uoc/Isc Measurements

    Maximum current ........40 A Maximum power of PV string ....48 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 69: Environmental

    MI 3116 PV Analyser XA Technical specifications DC current Range (A) Resolution (A) Accuracy 0.01 ±(1 % of reading + 8 digits) Isc_m 39.99 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 70: Environmental Conditions

    MI 3116 PV Analyser XA Technical specifications Display Display ..........Colour TFT display, 4.3 , 480 x 272 pixels Touch screen ........Capacitive Memory Memory card slot ......... microSD card, up to 32 GB Connectivity RS232 ........... 1 port, DB9 female USB ............

  • Page 71: 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 72: Appendix B - Structure Objects

    MI 3116 PV Analyser XA Appendix B - Structure objects 12 Appendix B - Structure objects Structure elements used in Memory Organizer may be Symbol Default name Description Node Node Object Object Inverter PV inverter Combiner box PV Combiner box...

  • Page 73: Appendix C - Profile Notes

    MI 3116 PV Analyser XA Appendix C - Profile Notes 13 Appendix C - Profile Notes So far there are no specific profile notes for this instrument.

  • Page 74: Appendix D - Pv Measurements - Calculated Values

    MI 3116 PV Analyser XA 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 75 MI 3116 PV Analyser XA 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 76 MI 3116 PV Analyser XA 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 77 MI 3116 PV Analyser XA Appendix D - PV measurements - calculated values �� �� ∙ �� ����,�� ����+ ����− �� ∙ ���� �� �� − �� ������ ����+ ����− Equation Instrument Description symbol abbreviation Roc+ Measured resistance between DC+ and PE ��...

  • Page 78: Appendix E Bifacial Pv Modules

    MI 3116 PV Analyser XA Appendix E Bifacial PV modules 15 Appendix E Bifacial PV modules Bifacial photovoltaic (PV) modules can utilize light that hits the PV module from both the front and back side. Such PV modules require different irradiation measurement compared to classical monofacial PV modules.
  • Page 79 MI 3116 PV Analyser XA Appendix E Bifacial PV modules In case of different configurations of PV modules in a PV string the PV reference cell must be placed in the centre of the PV string. Some of the recommended placements of the reference...
  • Page 80 MI 3116 PV Analyser XA 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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