METREL Eutrotest PB Instruction Manual
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METREL Eutrotest PB Instruction Manual

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EurotestPV
MI 3108

Instruction manual

Version 1.7, Code no. 20 752 095

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Summary of Contents for METREL Eutrotest PB

  • Page 1: Instruction Manual

    EurotestPV MI 3108 Instruction manual Version 1.7, Code no. 20 752 095...
  • Page 2 (European Union) concerning safety and electromagnetic compatibility regulations © 2013 – 2017 METREL The trade names Metrel, Smartec, Eurotest, Autosequence are trademarks registered or pending in Europe and other countries. No part of this publication may be reproduced or utilized in any form or by any means...

  • Page 3: Table Of Contents

    MI 3108 EurotestPV Table of contents Table of contents Preface ........................6 Safety and operational considerations ..............7 Warnings and notes ..................7 Battery and charging ..................12 Standards applied ................... 14 Instrument description ..................16 Front panel ...................... 16 Connector panel ....................
  • Page 4 MI 3108 EurotestPV Table of contents 5.6.4 RCD Autotest ......................56 Fault loop impedance and prospective fault current ........59 Line impedance and prospective short-circuit current / Voltage drop ....61 5.8.1 Line impedance and prospective short circuit current ..........62 5.8.2 Voltage drop ......................
  • Page 5 MI 3108 EurotestPV Table of contents 11.2 Continuity & Ring (r ) ..........104 11.3 RCD testing ....................104 11.3.1 General data ....................104 11.3.2 Contact voltage RCD-Uc ................. 105 11.3.3 Trip-out time ....................105 11.3.4 Trip-out current ....................105 11.4 Fault loop impedance and prospective fault current ........

  • Page 6: Preface

    In order for operator to be familiar enough with performing measurements in general and their typical applications it is advisable to read Metrel handbook Guide for testing and verification of low voltage installations. The instrument is equipped with the entire necessary accessory for comfortable testing.

  • Page 7: Safety And Operational Considerations

    2.1 Warnings and notes In order to maintain the highest level of operator safety while carrying out various tests and measurements, Metrel recommends keeping your Eurotest instruments in good condition and undamaged. When using the instrument, consider the following general...
  • Page 8 MI 3108 EurotestPV Safety and operational considerations Hazardous voltages exist inside the instrument. Disconnect all test leads,  remove the power supply cable and switch off the instrument before removing battery compartment cover. Do not connect any voltage source on C1 and P/C2 inputs. They are intended ...
  • Page 9 MI 3108 EurotestPV Safety and operational considerations When an insulation resistance measurement has been performed on a capacitive  object, automatic discharge may not be done immediately! The warning message and the actual voltage are displayed during discharge until voltage drops below 10 V.
  • Page 10 MI 3108 EurotestPV Safety and operational considerations The measurement of contact voltage does not normally trip an RCD. However, the  trip limit of the RCD may be exceeded as a result of leakage current flowing to the PE protective conductor or a capacitive connection between L and PE conductors. The RCD trip-lock sub-function (function selector switch in LOOP position) takes ...
  • Page 11 MI 3108 EurotestPV Safety and operational considerations For calculation of STC results measured Uoc / Isc values, irradiance, cell  temperature, and PV module parameters must be known. Refer to Appendix E for more information. Always perform zeroing of DC current clamps before test. ...

  • Page 12: Battery And Charging

    MI 3108 EurotestPV Safety and operational considerations 2.2 Battery and charging The instrument uses six AA size alkaline or rechargeable Ni-MH battery cells. Nominal operating time is declared for cells with nominal capacity of 2100 mAh. Battery condition is always displayed in the lower right display part. In case the battery is too weak the instrument indicates this as shown in figure 2.1.
  • Page 13 (more than 6 months). In this case Metrel recommends to repeat the charge / discharge cycle at least 2-4 times. If no improvement is achieved after several charge / discharge cycles, then each ...

  • Page 14: Standards Applied

    MI 3108 EurotestPV Safety and operational considerations 2.3 Standards applied The Eurotest instruments are manufactured and tested in accordance with the following regulations: Electromagnetic compatibility (EMC) BS EN 61326 Electrical equipment for measurement, control and laboratory use – EMC requirements Class B (Hand-held equipment used in controlled EM environments) Safety (LVD) BS EN 61010-1...
  • Page 15 MI 3108 EurotestPV Safety and operational considerations Note about EN and IEC standards: Text of this manual contains references to European standards. All standards of  EN 6XXXX (e.g. EN 61010) series are equivalent to IEC standards with the same number (e.g.

  • Page 16: Instrument Description

    MI 3108 EurotestPV Instrument description 3 Instrument description 3.1 Front panel Figure 3.1: Front panel Legend: 1 LCD 128 x 64 dots matrix display with backlight. 2 UP Modifies selected parameter. 3 DOWN 4 TEST Starts measurements. TEST Acts also as the PE touching electrode. 5 ESC Goes one level back.

  • Page 17: Connector Panel

    MI 3108 EurotestPV Instrument description 3.2 Connector panel Figure 3.2: Connector panel (picture of MI 3108) Legend: Test connector Measuring inputs / outputs Charger socket USB connector Communication with PC USB (1.1) port Protection cover Current clamp measuring input #1 Current clamp measuring input #2 P/C2 Measuring input for external probes...

  • Page 18: Back Side

    MI 3108 EurotestPV Instrument description 3.3 Back side Figure 3.3: Back panel Legend: Battery / fuse compartment cover Back panel information label Fixing screws for battery / fuse compartment cover Figure 3.4: Battery and fuse compartment Legend: Fuse F1 FF 315 mA / 1000 V d.c. (Breaking capacity: 50 kA) High breaking current fuse block Serial number label...

  • Page 19: Carrying The Instrument

    Ljubljanska 77 SI - 1354 Horjul Phase rotation (EN 61557-7) Tel: +386 1 75 58 200 Nominal voltage: 100V 440V / 1 http://www.metrel.si Results: 1.2.3 or 2.1.3 Figure 3.5: Bottom Legend: Bottom information label Neck belt openings Handling side covers 3.4 Carrying the instrument...

  • Page 20: Instrument Set And Accessories

    MI 3108 EurotestPV: Instrument description The instrument can be used even when placed in soft carrying bag – test cable connected to the instrument through the front aperture. 3.5 Instrument set and accessories 3.5.1 Standard set MI 3108 Instrument  Soft carrying bag, 2 pcs ...

  • Page 21: Instrument Operation

    MI 3108 EurotestPV Instrument operation 4 Instrument operation 4.1 Display and sound 4.1.1 Terminal voltage monitor The terminal voltage monitor displays on-line the voltages on the test terminals and information about active test terminals in the a.c. installation measuring mode. Online voltages are displayed together with test terminal indication.

  • Page 22: Results

    MI 3108 EurotestPV Instrument operation Instrument is overheated. The measurement is prohibited until the temperature decreases under the allowed limit. Result(s) can be stored. High electrical noise was detected during measurement. Results may be impaired. L and N are changed. Warning! High voltage is applied to the test terminals.

  • Page 23: Backlight And Contrast Adjustments

    MI 3108 EurotestPV Instrument operation Keys in help menu: UP / DOWN Selects next / previous help screen. HELP Scrolls through help screens. Function selector / ESC Exits help menu. Figure 4.1: Examples of help screens 4.1.7 Backlight and contrast adjustments With the BACKLIGHT key backlight and contrast can be adjusted.
  • Page 24 MI 3108 EurotestPV Instrument operation Function selector Selects test / measurement function. UP/DOWN Selects sub-function in selected measurement function. Selects screen to be viewed (if results are split into more screens). Selects the test parameter to be set or modified. TEST Runs selected test / measurement function.

  • Page 25: Instruments Main Menu

    MI 3108 EurotestPV Instrument operation 4.3 Instruments main menu In instrument’s main menu the test mode can be selected. Different instrument options can be set in the SETTINGS menu. <INSTALLATION> a.c. LV installation testing  <POWER> Power & Energy testing ...

  • Page 26: Memory

    MI 3108 EurotestPV Instrument operation 4.4.1 Memory In this menu the stored data can be recalled or deleted. See chapter 8 Data handling for more information. Figure 4.5: Memory options Keys: UP / DOWN Selects option. TEST Enters selected option. Exits back to settings menu.

  • Page 27: Rcd Standard

    MI 3108 EurotestPV Instrument operation Keys: Selects the field to be changed. UP / DOWN Modifies selected field. TEST Confirms new date / time and exits. Exits back to settings menu. Function selector Exits back to main menu without changes. Warning: If the batteries are removed for more than 1 minute the set date and time will be ...

  • Page 28: Z Factor

    MI 3108 EurotestPV Instrument operation Selective > 1999 130 ms < t < 500 60 ms < t < 200 50 ms < t < 150     RCDs (time-delayed) Trip-out times according to AS/NZS 3017 ½I 2I 5I N N...

  • Page 29: Commander Support

    MI 3108 EurotestPV Instrument operation The default value of Z factor is 0.80. The value should be set according to local regulative. Z factor can be selected between 0.80 and 1.00. 4.4.6 Commander support The support for remote commanders can be enabled or disabled in this menu.
  • Page 30 EurotestPV instrument In the BLUETOOTH DEVICES menu a Metrel Powermeter with Bluetooth connection can be found, selected and paired with the instrument. The Metrel Powermeter must have connected a properly initialized Bluetooth dongle A 1436. See chapter Initialization of the Bluetooth dongle(s) for more details.
  • Page 31 MI 3108 EurotestPV Instrument operation Figure 4.14: Searching and selection of Metrel Powermeter Bluetooth connection Keys: UP / DOWN Selects appropriate Bluetooth device. TEST Confirms selected device. Exits back to Bluetooth devices menu. Function selector Exits back to main menu without changes.

  • Page 32: Initial Settings

    EXTERNAL BT DONGLE SEARCHING OK! Initialization procedure (Bluetooth dongle for the Metrel Powermeter): 1. Connect Bluetooth dongle A 1436 (intended to be used with the Metrel Powermeter) to the EurotestPV instrument’s PS/2 port. 2. Switch on the EurotestPV instrument.
  • Page 33 MI 3108 EurotestPV Instrument operation Warning: Customized settings will be lost when this option is used!  If the batteries are removed for more than 1 minute the custom made settings will  be lost. The default setup is listed below: Instrument setting Default value Language...

  • Page 34: Clamp Settings

    MI 3108 EurotestPV Instrument operation ENV. Measured Measured INVERTER AC/ DC Note: Initial settings (reset of the instrument) can be recalled also if the TAB key is  pressed while the instrument is switched on. 4.4.9 Clamp Settings In Clamp settings menu the C1 and C2/P measuring inputs can be configured.
  • Page 35 MI 3108 EurotestPV Instrument operation The main purpose of the synchronization is: to get correct values of temperature and irradiance for calculation of STC measurement results. to get values of cell temperature up to 15 minutes before the PV tests in order to have an evidence that the measurement conditions were equilibrated during the PV tests.

  • Page 36: Solar Settings

    MI 3108 EurotestPV Instrument operation Note: Refer to A 1378 PV Remote unit user manual for more information.  4.4.11 Solar settings In Solar settings parameters of PV modules and settings for PV measurements can be set. Figure 4.20: Solar settings Keys: UP / DOWN Selects option.
  • Page 37 MI 3108 EurotestPV Instrument operation Keys: UP / DOWN Selects appropriate option. TEST Enters menu for changing type or parameters. ESC, Function selector Exits back. Enters PV module type memory menu. Changing a PV module type / parameter Keys: UP / DOWN Sets value / data of parameter / PV module type.
  • Page 38 MI 3108 EurotestPV Instrument operation Figure 4.23: Delete options Keys: TEST Confirms clearing. In Delete all option YES must be selected. Exits back to main function menu without changes. ESC / Function selector PV measurements settings Parameters for PV measurements can be set in this menu.
  • Page 39 MI 3108 EurotestPV Instrument operation Changing data of selected parameter Keys: UP / DOWN Sets parameter. TEST Confirms set data. ESC / Function selectors Exits back.

  • Page 40: Measurements - A.c. Lv Installations

    Measurements – a.c. LV installations MI 3108 EurotestPV 5 Measurements – a.c. LV installations 5.1 Compensation of test leads resistance This chapter describes how to compensate the test leads resistance in Continuity function. Compensation is required to eliminate the influence of test leads resistance and the internal resistances of the instrument on the measured resistance.

  • Page 41: Voltage, Frequency And Phase Sequence

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.2 Voltage, frequency and phase sequence Voltage and frequency measurement is always active in the terminal voltage monitor. In the special VOLTAGE TRMS menu the measured voltage, frequency and information about detected three-phase connection can be stored. Measurements are based on the BS EN 61557-7 standard.
  • Page 42 Measurements – a.c. LV installations MI 3108 EurotestPV Voltage measurement procedure Select the VOLTAGE TRMS function using the function selector keys.  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figures 5.5 and 5.6). ...

  • Page 43: Insulation Resistance

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.3 Insulation resistance The Insulation resistance measurement is performed in order to ensure safety against electric shock through insulation. It is covered by the BS EN 61557-2 standard. Typical applications are: Insulation resistance between conductors of installation, ...
  • Page 44 Measurements – a.c. LV installations MI 3108 EurotestPV Figure 5.9: Connections for insulation measurement Insulation resistance measuring procedure Select the R ISO function using the function selector keys.  Select the insulation subfunction with / keys.  Set the required test voltage. ...

  • Page 45: Resistance Of Earth Connection And Equipotential Bonding

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.4 Resistance of earth connection and equipotential bonding The Continuity measurement is performed in order to ensure that the protective measures against electric shock through earthing connections and bondings are effective. Six continuity sub-functions are available: ...
  • Page 46 Measurements – a.c. LV installations MI 3108 EurotestPV Test circuits for Continuity measurement Figure 5.12: Connections for testing the r and R sections of the wiring in ring circuits Figure 5.13: Connections for testing the R and R sections of the wiring in final circuits Continuity measurement procedure Select Continuity function using the function selector switch.

  • Page 47: Ring Continuity

    Measurements – a.c. LV installations MI 3108 EurotestPV Disconnect tested installation from mains supply.  Connect the test leads to the appropriate PE wiring (see figures 5.12 and 5.13).  Press the TEST key to perform the measurement.  After the measurement is finished store the result by pressing the MEM button ...
  • Page 48 Measurements – a.c. LV installations MI 3108 EurotestPV Test parameters for Ring Continuity measurement Measurement Subfunction [(r ), (R The Ring Continuity measurement is performed with automatic polarity reversal of the test voltage according to BS EN 61557-4. Test circuits for Ring Continuity measurement Figure 5.17: Step 1 - measurement of resistances r and r...
  • Page 49 Measurements – a.c. LV installations MI 3108 EurotestPV Figure 5.18: Step 2 - measurement of resistances R...
  • Page 50 Measurements – a.c. LV installations MI 3108 EurotestPV Ring Continuity measuring procedure Step 1: r resistance measuring procedure Select the RING function.  Set sub-function r1, rN, r2  Compensate test leads resistance (if necessary, see chapter 5.1).  Connect Easy Switch to the instrument (see figure 5.18) ...
  • Page 51 Measurements – a.c. LV installations MI 3108 EurotestPV Perform measurement on the next socket in final ring circuit.  Commit results (TAB key) again. The results will be committed only if they are  higher as the previous results. The R1+RN and R1+R2 results can be cleared with the TAB key ...

  • Page 52: Testing Rcds

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.6 Testing RCDs Various test and measurements are required for verification of RCD(s) in RCD protected installations. Measurements are based on the BS EN 61557-6 standard. The following measurements and tests (sub-functions) can be performed: Contact voltage, ...

  • Page 53: Contact Voltage (Rcd Uc)

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.6.1 Contact voltage (RCD Uc) A current flowing into the PE terminal causes a voltage drop on earth resistance, i.e. voltage difference between PE equipotential bonding circuit and earth. This voltage difference is called contact voltage and is present on all accessible conductive parts connected to the PE.

  • Page 54: Trip-Out Time (Rcdt)

    Measurements – a.c. LV installations MI 3108 EurotestPV Displayed results: Uc ..Contact voltage. Rl ..Fault loop resistance. Rmax ... Maximum earth fault loop resistance value according to BS 7671 5.6.2 Trip-out time (RCDt) Trip-out time measurement verifies the sensitivity of the RCD at different residual currents.
  • Page 55 Measurements – a.c. LV installations MI 3108 EurotestPV Trip-out current measurement procedure Select the function using the function selector keys.  Set sub-function RCD I.  Set test parameters (if necessary).  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figure 5.21). ...

  • Page 56: Rcd Autotest

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.6.4 RCD Autotest RCD autotest function is intended to perform a complete RCD test (trip-out time at different residual currents, trip-out current and contact voltage) in one set of automatic tests, guided by the instrument. Additional key: HELP / DISPLAY Toggles between top and bottom part of results field.
  • Page 57 Measurements – a.c. LV installations MI 3108 EurotestPV Result examples: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Figure 5.26: Individual steps in RCD autotest Bottom Figure 5.27: Two parts of result field in RCD autotest...
  • Page 58 Measurements – a.c. LV installations MI 3108 EurotestPV Displayed results: , IN, 0º), x1 ..Step 1 trip-out time ( , IN, 180º), x1 ..Step 2 trip-out time ( , 5IN, 0º), x5 ..Step 3 trip-out time ( , 5IN, 180º), x5 ..

  • Page 59: Fault Loop Impedance And Prospective Fault Current

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.7 Fault loop impedance and prospective fault current Fault loop is a loop comprised by mains source, line wiring and PE return path to the mains source. The instrument measures the impedance of the loop and calculates the short circuit current.
  • Page 60 Measurements – a.c. LV installations MI 3108 EurotestPV Fault loop impedance measurement procedure Select the Zloop Zs rcd sub-function using the function selector keys and  / keys. Select test parameters (optional).  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figures 5.29 and 5.21).

  • Page 61: Line Impedance And Prospective Short-Circuit Current / Voltage Drop

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.8 Line impedance and prospective short-circuit current / Voltage drop Line impedance is measured in loop comprising of mains voltage source and line wiring. Line impedance is covered by the requirements of the BS EN 61557-3 standard. The Voltage drop sub-function is intended to check that a voltage in the installation stays above acceptable levels if the highest current is flowing in the circuit.

  • Page 62: Line Impedance And Prospective Short Circuit Current

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.8.1 Line impedance and prospective short circuit current Circuits for measurement of line impedance Figure 5.33: Phase-neutral or phase-phase line impedance measurement – connection of plug cable and 3-wire test lead Line impedance measurement procedure Select the Zline sub-function.

  • Page 63: Voltage Drop

    Measurements – a.c. LV installations MI 3108 EurotestPV (93 V  U  134 V) 110 V (185 V  U  266 V) 230 V (321 V  U  485 V) 400 V Note: High fluctuations of mains voltage can influence the measurement results (the ...
  • Page 64 Measurements – a.c. LV installations MI 3108 EurotestPV Step 1 - Zref Step 2 - Voltage drop Figure 5.36: Examples of voltage drop measurement result Displayed results: ΔU ... Voltage drop, .... Prospective short-circuit current, Z ....Line impedance at measured point, Zref ..

  • Page 65: Earth Resistance

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.9 Earth resistance Earth resistance is one of the most important parameters for protection against electric shock. Main earthing arrangements, lightning systems, local earthings, etc can be verified with the earthing resistance test. The measurement conforms to the BS EN 61557-5 standard.
  • Page 66 Measurements – a.c. LV installations MI 3108 EurotestPV Figure 5.39: Resistance to earth, measurement of a lighting protection system Earth resistance measurements, common measurement procedure Select EARTH function using the function selector keys.  Enable and set limit value (optional). ...

  • Page 67: Pe Test Terminal

    Measurements – a.c. LV installations MI 3108 EurotestPV 5.10 PE test terminal It can happen that a dangerous voltage is applied to the PE wire or other accessible metal parts. This is a very dangerous situation since the PE wire and MPEs are considered to be earthed.
  • Page 68 Measurements – a.c. LV installations MI 3108 EurotestPV PE terminal test procedure Connect test cable to the instrument.  Connect test leads to the item to be tested (see figures 5.41 and 5.42).  Touch PE test probe (the TEST key) for at least one second. ...

  • Page 69: Solar Measurements - Pv Systems

    Solar measurements – PV systems MI 3108 EurotestPV 6 Solar measurements - PV systems The following measurements for verification and troubleshooting of PV installations can be performed with the instrument: Insulation resistance on PV systems  PV inverter test  PV panel test ...
  • Page 70 Solar measurements – PV systems MI 3108 EurotestPV Test circuits for insulation resistance on PV systems Figure 6.2: Connections for insulation resistance measurement on PV systems Insulation resistance measuring procedure sub-function using the function selector keys and / keys. Select the Roc- ...

  • Page 71: Pv Inverter Test

    For 3-phase inverters one DC and three AC signals can be measured at the same time with a combination of a Metrel Powermeter and the EurotestPV instrument. During the measurement the Power meter and EurotestPV instrument must be connected via cable or Bluetooth link.
  • Page 72 Solar measurements – PV systems MI 3108 EurotestPV Connections for PV inverter test Figure 6.6: PV inverter test - DC side Figure 6.7: PV inverter test - AC side Figure 6.8: PV inverter test - AC and DC sides...
  • Page 73 Solar measurements – PV systems MI 3108 EurotestPV Figure 6.9: PV inverter test – 3 phase - AC side Figure 6.10: PV inverter test – 3 phase AC and DC sides PV inverter test procedure (with EurotestPV instrument) sub-function using the function selector keys and / keys. Select INVERTER ...
  • Page 74 Solar measurements – PV systems MI 3108 EurotestPV PV inverter test procedure (with EurotestPV instrument and Metrel Powermeter) Note: The Communication settings of Metrel Powermeter must be following:  Source = RS232 Baud Rate = 9600 sub-function using the function selector keys and / keys.

  • Page 75: Pv Panel Test

    For the INVERTER AC/DC test fused test lead A 1385 must be used!  For more information about measuring and setup of the Metrel Powermeter refer  to Metrel Powermeter’s instruction manual. Contact Metrel or distributor for detailed information which Metrel Powermeters are suitable for this measurement.
  • Page 76 Solar measurements – PV systems MI 3108 EurotestPV Connections for PV panel Figure 6.15: PV panel test PV panel test procedure Select PANEL sub-function using the function selector keys.  Connect PV safety probe, current clamp(s) and sensors to the instrument. ...

  • Page 77: Measuring Of Environmental Parameters

    Solar measurements – PV systems MI 3108 EurotestPV Ptheo…. .. calculated theoretical output power of the panel at momentary conditions η2…..calculated efficiency of the panel at momentary conditions (simplified method, see appendix E) Notes: Before starting the PV measurements settings of PV module type and PV test ...
  • Page 78 Solar measurements – PV systems MI 3108 EurotestPV Connections for measuring of environmental parameters Figure 6.18: Measurement of environmental parameters Procedure for measuring of environmental parameters Select ENV. function and MEAS sub-function using the function selector keys  and / keys. Connect environmental probes to the instrument (see figure 6.18).

  • Page 79: Operation With A1378 Pv Remote Unit

    Solar measurements – PV systems MI 3108 EurotestPV Function Exits environmental menu and select PV measurement. selector Figure 6.20: Example of manually entered results Displayed results for environmental parameters: Irr………………...solar irradiance Tamb or Tcell…. temperature of ambient or PV cells Note: Environmental parameters are cleared when the SOLAR test mode is exited.
  • Page 80 Solar measurements – PV systems MI 3108 EurotestPV Connection for Uoc / Isc test Figure 6.22: Uoc / Isc test Uoc / Isc test procedure sub-function using the function selector keys and / keys. Select Uoc / Isc  Connect PV safety probe and sensors (optional) to the instrument. ...

  • Page 81: I / V Curve Measurement

    Solar measurements – PV systems MI 3108 EurotestPV 6.6 I / V curve measurement The I / V curve measurement is used to check correct operation of the PV panels. Different problems on PV panels (failure of a part of the PV panel / string, dirt, shadow etc.) can be found.

  • Page 82: Measurement Of Cell Temperature Before Test

    Solar measurements – PV systems MI 3108 EurotestPV I / V curve test procedure sub-function using the function selector keys and / keys. Select I / V  Check or set PV module and PV testing parameters and limits (optional). ...
  • Page 83 Solar measurements – PV systems MI 3108 EurotestPV The results can be viewed in recall memory screens (see 8.4 Recalling test results for more information). Figure 6.27: Example of cell temperature before test result screen Displayed results: T15 ..cell temperature 15 minutes before the PV test T10 ..

  • Page 84: Measurements - Power & Energy

    MI 3108 EurotestPV Measurements - Power & energy 7 Measurements - Power & Energy 1- phase power measurements and tests (sub-functions) can be performed with the EurotestPV instrument. Main features are: Measurement of standard power parameters,  Harmonic analysis of voltage and current, ...

  • Page 85: Harmonics

    MI 3108 EurotestPV Measurements - Power & energy Power test procedure sub-function using the function selector keys and / keys. Select POWER  Connect the voltage test leads and current clamp to the instrument.  Connect the voltage test leads and current clamp to the item to be tested (see ...

  • Page 86: Scope

    MI 3108 EurotestPV Measurements - Power & energy Harmonics measurement procedure sub-function using the function selector keys and / Select HARMONICS  keys. Connect voltage test leads and current clamp to the instrument.  Connect the voltage test leads and current clamp to the item to be tested (see ...

  • Page 87: Current

    MI 3108 EurotestPV Measurements - Power & energy Scope measurement procedure Select SCOPE sub-function using the function selector keys and Up/Down keys.  Connect voltage test leads and current clamp to the instrument.  Connect the voltage test leads and current clamp to the item to be tested (see ...
  • Page 88 MI 3108 EurotestPV Measurements - Power & energy Connection for current measurement Figure 7.9: Leakage and load current measurements Current measurement procedure Select CURRENT function using the function selector keys.  Select input channel (optional).  Connect current clamp(s) to the instrument. ...

  • Page 89: Energy

    MI 3108 EurotestPV Measurements - Power & energy 7.5 Energy In this function consumed and generated energy can be measured. See chapter 4.2 Function selection for instructions on key functionality. Figure 7.11: Energy menu Settings and parameters for the Energy measurement Maximal expected TRMS current during measurement [I /10, range...

  • Page 90: Data Handling

    MI 3108 EurotestPV Data handling 8 Data handling 8.1 Memory organization Measurement results together with all relevant parameters can be stored in the instrument’s memory. After the measurement is completed, results can be stored to the flash memory of the instrument, together with the sub-results and function parameters. 8.2 Data structure The instrument’s memory place is organized in a four-level structure as follows: Object (1...
  • Page 91 MI 3108 EurotestPV Data handling  BONDING Gas  BONDING Structural Steel  BONDING Other  BONDING Earthing conductor  CONNECTION 001 …  CONNECTION 199 OBJECT 002 OBJECT 199 Figure 8.1: Instrument memory organization The memory structure is organized in a way that is suited to BS 7671 and other verification documents (Electrical Installation Certificate, Periodic Inspection Report etc.).

  • Page 92: Storing Test Results

    MI 3108 EurotestPV Data handling D.BOARD: Default location name (distribution board and its successive number). level:  CIRCUIT: Default location name (circuit and its successive number). EARTH ELECTR.: Default location name (earth electrode). BONDING xxx: Default location names (7 bonding connections).

  • Page 93: Recalling Test Results

    MI 3108 EurotestPV Data handling The instrument offers to store the result to the last selected location by default.  If the measurement is to be stored to the same location as the previous one just  press the MEM key twice. 8.4 Recalling test results Press the MEM key in a main function menu when there is no result available for storing or select MEMORY in the SETTINGS menu.

  • Page 94: Clearing Stored Data

    MI 3108 EurotestPV Data handling MEM / ESC Returns to measurements field. Function selector Exits back to main function menu. TEST 8.5 Clearing stored data 8.5.1 Clearing complete memory content Select CLEAR ALL MEMORY in MEMORY menu. A warning (see fig. 6.6) will be displayed.

  • Page 95: Clearing Individual Measurements

    MI 3108 EurotestPV Data handling Figure 8.9: Clear measurements menu (data structure field selected) Keys in delete results menu (installation structure field selected): Selects the location element (Object / D. Board / Circuit or Bonding or Electrode / Connection). UP / DOWN Selects the location element in selected level.

  • Page 96: Renaming Installation Structure Elements (Upload From Pc)

    MI 3108 EurotestPV Data handling Keys in dialog for confirmation to clear selected result(s): TEST Deletes selected measurement result. MEM / TAB / ESC Exits back to measurements field without changes. Function selector Exits back to main function menu without changes. Figure 8.11: Dialog for confirmation Figure 8.12: Display after measurement was cleared...
  • Page 97 A new location name (scanned from a barcode label or a RFID tag) will be  accepted by the instrument. A successful receive of a barcode or RFID tag is confirmed by two short confirmation beeps. Note: Use only barcode readers and RFID readers delivered by Metrel or authorized  distributor.

  • Page 98: Communication

    MI 3108 EurotestPV Data handling 8.6 Communication There are two communication interfaces available on the instrument: USB or RS 232. With the optional Bluetooth dongle A 1436 the instrument can communicate via Bluetooth too. 8.6.1 USB and RS232 communication The instrument automatically selects the communication mode according to detected interface.

  • Page 99: Bluetooth Communication

     initialized. If not the Bluetooth dongle must be initialized as described in chapter 4.4.7 Communication. Switch On the Metrel Powermeter. A second Bluetooth dongle A 1436 should be  inserted to the Powermeter’s PS/2 port. Be sure that the second Bluetooth dongle A 1436 is properly initialized (as ...
  • Page 100 MI 3108 EurotestPV Data handling Notes: Sometimes there will be a demand from the PC or Android device to enter the  code. Enter code ‘NNNN’ to correctly configure the Bluetooth link. The name of a correctly configured Bluetooth device must consist of the instrument ...

  • Page 101: Upgrading The Instrument

    MI 3108 EurotestPV Upgrading the instrument 9 Upgrading the instrument The instrument can be upgraded from a PC via the RS232 communication port. This enables to keep the instrument up to date even if the standards or regulations change. The upgrade can be carried with a help of special upgrading software and the communication cable as shown on Figure 8.15.

  • Page 102: Maintenance

    MI 3108 EurotestPV Maintenance Maintenance Unauthorized persons are not allowed to open the EurotestPV instrument. There are no user replaceable components inside the instrument, except the battery and fuse under rear cover. 10.1 Fuse replacement There is a fuse under back cover of the EurotestPV instrument. ...

  • Page 103: Technical Specifications

    MI 3108 EurotestPV Technical specifications Technical specifications 11.1 Insulation resistance (ISO L/N, ISO L/E, ISO N/E, ISO L/L), Insulation resistance of PV systems (Roc+, Roc-) Insulation resistance (nominal voltages 50 V , 100 V and 250 V Measuring range according to EN 61557 is 0.25 M  199.9 M. Accuracy Measuring range (M) Resolution (M)

  • Page 104: Continuity & Ring (R )

    MI 3108 EurotestPV Technical specifications 11.2 Continuity & Ring (r Measuring range according to EN 61557 is 0.16   1999 . Accuracy Measuring range R () Resolution () 0.00  19.99 (3 % of reading + 3 digits) 0.01 20.0 ...

  • Page 105: Contact Voltage Rcd-Uc

    MI 3108 EurotestPV Technical specifications 11.3.2 Contact voltage RCD-Uc Measuring range according to EN 61557 is 20.0 V  31.0V for limit contact voltage 25V Measuring range according to EN 61557 is 20.0 V  62.0V for limit contact voltage 50V Measuring range (V) Resolution (V) Accuracy...

  • Page 106: Fault Loop Impedance And Prospective Fault Current

    MI 3108 EurotestPV Technical specifications 20.0  99.9 (-0 % / +15 %) of reading The accuracy is valid if mains voltage is stabile during the measurement and PE terminal is free of interfering voltages. Trip-out measurement is not available for I =1000 mA (RCD types B, B+).

  • Page 107: Rcd Selected

    MI 3108 EurotestPV Technical specifications 11.4.2 RCD selected Fault loop impedance Measuring range according to EN 61557 is 0.46   9.99 k. Accuracy Measuring range () Resolution () 0.00  9.99 0.01 (5 % of reading + 10 digits) 10.0 ...

  • Page 108: Resistance To Earth

    MI 3108 EurotestPV Technical specifications Voltage drop (calculated value) Measuring range (%) Resolution (%) Accuracy 0.0  99.9 Consider accuracy of line impedance measurement(s)* measuring range……………………… 0.00 Ω  20.0 Ω *See chapter 5.8.2 Voltage drop for more information about calculation of voltage drop result 11.6 Resistance to earth Measuring range according to EN61557-5 is 2.00 ...

  • Page 109: Frequency

    MI 3108 EurotestPV Technical specifications 0  550 (2 % of reading + 2 digits) Result type ........True r.m.s. (trms) Nominal frequency range ....0 Hz, 14 Hz  500 Hz 11.7.3 Frequency Measuring range (Hz) Resolution (Hz) Accuracy 0.00 ...

  • Page 110: Power Tests

    MI 3108 EurotestPV Technical specifications Range = 200 A Measuring range (A) Resolution (A) Accuracy* 0.00  0.09 0.01 indicative 0.10  1.99 (5 % of reading + 3 digits) 0.01 2.00  19.99 (3 % of reading + 3 digits) 0.01 20.0 ...
  • Page 111 MI 3108 EurotestPV Technical specifications Note: Error of external voltage and current transducers is not considered in this  specification. Power (P, S, Q) Measuring range is from 0.00 W (VA, Var) to 999 kW (kVA, kVar) Power factor Measuring range is from – 1.00 to 1.00 Voltage harmonics Measuring range is from 0.1 V to 500 V Voltage THD...

  • Page 112: Pv Tests

    MI 3108 EurotestPV Technical specifications 11.10 PV tests 11.10.1 Accuracy of STC data Accuracy of STC values is based on accuracy of measured electrical quantities, accuracy of environmental parameters, and entered parameters of PV module. See Appendix E: PV measurements – calculated values for more information about calculation of STC values.

  • Page 113: I-V Curve

    For measuring range, resolution and accuracy of the 3-phase a.c. powers (Pt, P1,  P2 and P3) in AC3 and AC3/DC inverter sub-functions refer to technical specifications of applied Metrel Powermeter. 11.10.3 I-V curve DC Voltage Measuring range (V)

  • Page 114: Environmental Parameters

    MI 3108 EurotestPV Technical specifications DC Current Measuring range (A) Resolution (A) Accuracy 0.00  1.99 (1 % of reading + 2 digits) 0.01 2.00  15.00 1 % of reading 0.01 Maximal power of PV string: 15 kW 11.10.5 Environmental parameters Solar Irradiance Probe A 1399 Measuring range (W/m...

  • Page 115: General Data

    MI 3108 EurotestPV Technical specifications 11.11 General data Power supply voltage ......9 V (61.5 V battery or accu, size AA) Operation .......... typical 20 h Charger socket input voltage .... 12 V  10 % Charger socket input current .... 400 mA max. Battery charging current ....

  • Page 116: Appendix A - Impedance Tables

    Appendix A – Impedance tables MI 3152(H) EurotestXC (2,5 kV) Appendix A - Impedance tables A.1 Impedance tables - for fuses, circuit-breakers and RCBO’s The maximum loop impedances in the following tables are used for the pass/fail limits for the measurement of loop impedance. The 1.0 Z factor setting maximum loop impedances are in accordance with BS 7671 Amendment No.
  • Page 117 Appendix A – Impedance tables MI 3152(H) EurotestXC (2,5 kV) Type B circuit-breakers to BS EN 60898 Type C circuit-breakers to BS EN 60898 and RCBO’s to BS EN 61009-1 and RCBO’s to BS EN 61009-1 Disconnection time 0.4 & 5 s Disconnection time 0.4 &...

  • Page 118: Appendix B - Accessories For Specific Measurements

    Appendix B – Accessories for specific measurements MI 3108 EurotestPV Appendix B - Accessories for specific measurements The table below presents recommended standard and optional accessories required for specific measurement. Please see attached list of standard accessories for your set or contact your distributor for further information.
  • Page 119 Appendix B – Accessories for specific measurements MI 3108 EurotestPV PV MC3 adapters  PV Remote unit (A 1378)  PV fused test lead (A 1385)  AC/DC current clamp (A 1391)  AC current clamp (A 1018)  AC current clamp (A 1019) ...

  • Page 120: Appendix C - Country Notes

    Appendix C – Country notes MI 3108 EurotestPV Appendix C – Country notes There are no specific country notes.

  • Page 121: Appendix D - Commander (A 1401)

    If the commander is not used for a long period of time, remove all batteries from  the battery compartment. Alkaline or rechargeable Ni-MH batteries (size AA) can be used. Metrel  recommends only using rechargeable batteries with a capacity of 800 mAh or above.

  • Page 122: Operation Of Commander

    Appendix D – Commanders MI 3108 EurotestPV Figure D.2: Back side Legend: 1 TEST Starts measurements. TEST Acts also as the PE touching electrode. 2 LED Left status RGB LED 3 LED Right status RGB LED 4 LEDs Lamp LEDs (Tip commander) 5 Function selector Selects test function.
  • Page 123 Appendix D – Commanders MI 3108 EurotestPV PE terminal test procedure Connect commander to the instrument.  Connect commander to the item to be tested (see figure D.3).  Touch PE test probe (the TEST key) on commander for at least one second. ...

  • Page 124: Appendix E - Pv Measurements - Calculated Values

    Appendix E – PV measurements – calculated values MI 3108 EurotestPV Appendix E – PV measurements - calculated values Calculation with known U, I (DC, AC), configuration of modules into a string (M - modules in serial, N - modules in parallel), environment parameters (Irr, T) and data supplied by the panels manufacturer (U, I (AC, DC), phase, Istc, α, β, γ, Pnom, NOCT, Irr, Irr , Tamb or Tcell)
  • Page 125 Appendix E – PV measurements – calculated values MI 3108 EurotestPV η Efficiency of panel (simplified) Ptheo Theoretical power of string at measured irradiance Pnom nominal power of panel at STC nominal irradiance at STC (Irr = 1000 W/m measured irradiance number of modules in serial number of modules in parallel Depending on temperature criterion for PASS is:...
  • Page 126 Appendix E – PV measurements – calculated values MI 3108 EurotestPV Panel: Measured U and I are corrected to STC conditions:        meas meas meas          ...
  • Page 127 Appendix E – PV measurements – calculated values MI 3108 EurotestPV Conversion efficiency: 1. inverter:   Insulation measurements of PV modules and strings The first insulation method described in the standard IEC 62446 results in two values: insulation resistance between positive output and earth insulation resistance between negative output and earth The second method described in the standard returns only one value: insulation resistance between short circuit outputs and earth...

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