METREL Eutrotest PB, MI 3108 Instruction Manual

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EurotestPV

MI 3108

Instruction manual

Version 1.7, Code no. 20 752 095

Distributor:

Manufacturer: METREL d.d.

Ljubljanska cesta 77 1354 Horjul Slovenia web site: http://www.metrel.si e-mail: metrel@metrel.si

Mark on your equipment certifies that this equipment meets the requirements of the EU (European Union) concerning safety and electromagnetic compatibility regulations

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 without permission in writing from METREL.

MI 3108 EurotestPV Table of contents

Table of contents

1 Preface .................................................................................................................... 6

2 Safety and operational considerations ................................................................. 7

2.1 Warnings and notes .......................................................................................... 7

2.2 Battery and charging ....................................................................................... 12

2.3 Standards applied ........................................................................................... 14

3 Instrument description ......................................................................................... 16

3.1 Front panel ...................................................................................................... 16

3.2 Connector panel .............................................................................................. 17

3.3 Back side ................................ ................................ ................................ ......... 18

3.4 Carrying the instrument ................................................................................... 19

3.5 Instrument set and accessories ....................................................................... 20

3.5.1 Standard set MI 3108 ............................................................................................ 20

3.5.2 Optional accessories ............................................................................................. 20

4 Instrument operation ............................................................................................ 21

4.1 Display and sound ........................................................................................... 21

4.1.1 Terminal voltage monitor ....................................................................................... 21

4.1.2 Battery indication ................................................................................................... 21

4.1.3 Messages .............................................................................................................. 21

4.1.4 Results .................................................................................................................. 22

4.1.5 Sound warnings ..................................................................................................... 22

4.1.6 Help screens ......................................................................................................... 22

4.1.7 Backlight and contrast adjustments ....................................................................... 23

4.2 Function selection ........................................................................................... 23

4.3 Instruments main menu ................................................................................... 25

4.4 Settings ........................................................................................................... 25

4.4.1 Memory ................................................................................................................. 26

4.4.2 Language .............................................................................................................. 26

4.4.3 Date and time ........................................................................................................ 26

4.4.4 RCD standard ....................................................................................................... 27

4.4.5 Z factor .................................................................................................................. 28

4.4.6 Commander support .............................................................................................. 29

4.4.7 Communication ..................................................................................................... 29

4.4.8 Initial settings ........................................................................................................ 32

4.4.9 Clamp Settings ...................................................................................................... 34

4.4.10 Synchronization (A 1378 - PV Remote unit) ....................................................... 34

4.4.11 Solar settings ..................................................................................................... 36

5 Measurements – a.c. LV installations ................................................................. 40

5.1 Compensation of test leads resistance ............................................................ 40

5.2 Voltage, frequency and phase sequence ........................................................ 41

5.3 Insulation resistance ........................................................................................ 43

5.4 Resistance of earth connection and equipotential bonding ............................. 45

5.5 Ring Continuity ................................................................................................ 47

5.6 Testing RCDs .................................................................................................. 52

5.6.1 Contact voltage (RCD Uc) ..................................................................................... 53

5.6.2 Trip-out time (RCDt) .............................................................................................. 54

5.6.3 Trip-out current (RCD I) ................................................................ ......................... 54

MI 3108 EurotestPV Table of contents

5.6.4 RCD Autotest ........................................................................................................ 56

5.7 Fault loop impedance and prospective fault current ........................................ 59

5.8 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 .......................................................................................................... 63

5.9 Earth resistance .............................................................................................. 65

5.10 PE test terminal ............................................................................................... 67

6 Solar measurements - PV systems ..................................................................... 69

6.1 Insulation resistance on PV systems ............................................................... 69

6.2 PV inverter test ................................................................................................ 71

6.3 PV panel test ................................................................ ................................ ... 75

6.4 Measuring of environmental parameters ......................................................... 77

6.2.1 Operation with A1378 PV Remote Unit ................................................................... 79

6.5 Uoc / Isc test .................................................................................................... 79

6.6 I / V curve measurement ................................................................................. 81

6.7 Measurement of cell temperature before test .................................................. 82

7 Measurements - Power & Energy ........................................................................ 84

7.1 Power .............................................................................................................. 84

7.2 Harmonics ....................................................................................................... 85

7.3 Scope .............................................................................................................. 86

7.4 Current ............................................................................................................ 87

7.5 Energy ............................................................................................................. 89

8 Data handling ........................................................................................................ 90

8.1 Memory organization ....................................................................................... 90

8.2 Data structure .................................................................................................. 90

8.3 Storing test results ........................................................................................... 92

8.4 Recalling test results ....................................................................................... 93

8.5 Clearing stored data ........................................................................................ 94

8.5.1 Clearing complete memory content ....................................................................... 94

8.5.2 Clearing measurement(s) in selected location and its sub-locations ...................... 94

8.5.3 Clearing individual measurements ......................................................................... 95

8.5.4 Renaming installation structure elements (upload from PC) .................................. 96

8.5.5 Renaming installation structure elements with serial barcode reader or RFID reader 96

8.6 Communication ............................................................................................... 98

8.6.1 USB and RS232 communication ........................................................................... 98

Bluetooth communication .................................................................................................. 99

9 Upgrading the instrument .................................................................................. 101

10 Maintenance .................................................................................................... 102

10.1 Fuse replacement .......................................................................................... 102

10.2 Cleaning ........................................................................................................ 102

10.3 Periodic calibration ........................................................................................ 102

10.4 Service .......................................................................................................... 102

11 Technical specifications................................................................................. 103

11.1 Insulation resistance (ISO L/N, ISO L/E, ISO N/E, ISO L/L), Insulation

resistance of PV systems (Roc+, Roc-).................................................................... 103

MI 3108 EurotestPV Table of contents

11.2 Continuity & Ring (r1, r2, rN, R1+R2, R1+RN) .................................................. 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 ...................................... 106

11.4.1 No disconnecting device or FUSE selected ..................................................... 106

11.4.2 RCD selected .................................................................................................. 107

11.5 Line impedance and prospective short-circuit current / Voltage drop ............ 107

11.6 Resistance to earth ....................................................................................... 108

11.7 Voltage, frequency, and phase rotation ......................................................... 108

11.7.1 Phase rotation ................................................................................................. 108

11.7.2 Voltage ............................................................................................................ 108

11.7.3 Frequency ....................................................................................................... 109

11.7.4 Online terminal voltage monitor ....................................................................... 109

11.8 . TRMS Clamp current ................................................................................... 109

11.9 Power tests .................................................................................................... 110

11.10 PV tests ..................................................................................................... 112

11.10.1 Accuracy of STC data ...................................................................................... 112

11.10.2 Panel, Inverter ................................................................................................. 112

11.10.3 I-V curve .......................................................................................................... 113

11.10.4 Uoc - Isc .......................................................................................................... 113

11.10.5 Environmental parameters ............................................................................... 114

11.10.6 Insulation Resistance of PV systems ............................................................... 114

11.11 General data .............................................................................................. 115

Appendix A - Impedance tables................................................................................ 116

A.1 Impedance tables - for fuses, circuit-breakers and RCBO’s .......................... 116

Appendix B - Accessories for specific measurements .......................................... 118

Appendix C – Country notes .................................................................................... 120

Appendix D – Commander (A 1401) ................................ ................................ ......... 121

D.1 Warnings related to safety .......................................................................... 121

D.2 Battery ............................................................................................................... 121

D.3 Description of commander ................................................................................. 121

D.4 Operation of commander ................................................................................... 122

Appendix E – PV measurements - calculated values ............................................. 124

MI 3108 EurotestPV Preface

1 Preface

Congratulations on your purchase of the Eurotest instrument and its accessories from METREL. The instrument was designed on a basis of rich experience, acquired through many years of dealing with electric installation test equipment.

The Eurotest instrument is a professional, multifunctional, hand-held test instrument intended to perform all the measurements on a.c. electrical LV installations and d.c. photovoltaic systems.

The following measurements and tests can be performed on a.c. electrical LV installations:

 Voltage and frequency,  Continuity tests,  Insulation resistance tests,  RCD testing,  Fault loop / RCD trip-lock impedance measurements,  Line impedance / Voltage drop,  Phase sequence,  Earthing resistance tests,  Current measurements,  Power, harmonics and energy measurements.

Measurements and tests on PV systems:

 Voltages, currents and power in PV systems (Inverter and PV panels),  Calculation of efficiencies and STC values in PV systems,  Uoc / Isc measurements,  Environmental parameters (Temperature and Irradiance),  I-V curve test,  Insulation resistance on PV systems.

The graphic display with backlight offers easy reading of results, indications, measurement parameters and messages. Two LED Pass/Fail indicators are placed at the sides of the LCD. The operation of the instrument is designed to be as simple and clear as possible and no special training (except for the reading this instruction manual) is required in order to begin using the instrument. 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.

MI 3108 EurotestPV Safety and operational considerations

2 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 warnings:

General warnings related to safety:

 The symbol on the instrument means »Read the Instruction manual with

special care for safe operation«. The symbol requires an action!

 If the test equipment is used in a manner not specified in this user manual,

the protection provided by the equipment could be impaired!

 Read this user manual carefully, otherwise the use of the instrument may be

dangerous for the operator, the instrument or for the equipment under test!

 Do not use the instrument or any of the accessories if any damage is noticed!  Consider all generally known precautions in order to avoid risk of electric

shock while dealing with hazardous voltages!

 If the 315 mA fuse blows follow the instructions in this manual in order to

replace it! Use only fuses that are specified!

 Do not disassemble or repair the high breaking current fuse block! In case it

fails the entire block must be replaced with a new original one!

 Do not use the instrument in AC supply systems with voltages higher than

550 Va.c.

 Service, repairs or adjustment of instruments and accessories is only

allowed to be carried out by a competent authorized personnel!

 Use only standard or optional test accessories supplied by your distributor!  Consider that protection category of some accessories is lower than of the

instrument. Test tips and Tip commander have removable caps. If they are removed the protection falls to CAT II. Check markings on accessories! (cap

off, 18 mm tip)…CAT II up to 1000 V (cap on, 4 mm tip)… CAT II 1000 V / CAT III 600 V / CAT IV 300 V

 The instrument comes supplied with rechargeable Ni-MH battery cells. The

cells should only be replaced with the same type as defined on the battery compartment label or as described in this manual. Do not use standard alkaline battery cells while the power supply adapter is connected, otherwise they may explode!

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

only for connection of current clamps and sensors. Maximal input voltage is 3 V!

 All normal safety precautions must be taken in order to avoid risk of electric

shock while working on electrical installations!

 If the instrument is not in SOLAR operating mode the instrument displays a

warning if an external DC voltage of higher than 50 V is applied to the instrument. Measurements are blocked.

Warnings related to safety of measurement functions:

All PV functions

 Use only dedicated accessories for testing on PV electrical installations.

Accessories for PV installations have yellow marked connectors. Appropriate warnings are displayed.

PV Safety probe A1384 has inbuilt protective circuit that safely disconnects the instrument from the PV installation in case of a failure in the instrument. PV test lead A1385 has integrated fuses that safely disconnects instrument from the PV installation in case of a failure in the instrument.

 Do not use the instrument in PV systems with voltages higher than 1000 V

d.c. and/ or currents higher than 15 A d.c. ! Otherwise the instrument can be damaged.

 PV sources can produce very high voltages and currents. Only skilled and

trained personnel should perform measurements on photovoltaic systems.

 Local regulations should be considered.  Safety precautions for working on the roof should be considered.  In case of a fault in the measuring system (wires, devices, connections,

measuring instrument, accessories), presence of flammable gases, very high moisture or heavy dust an electrical arc can occur that will not extinguish by itself. Arcs can lead to fire and can cause heavy damage. Users must be skilled to disconnect the PV system safely in this case.

Insulation resistance, Insulation resistance of PV systems

 Insulation resistance measurement should only be performed on de-energized

objects!

 Do not touch the test object during the measurement or before it is fully discharged!

Risk of electric shock!

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.

Continuity functions

 Continuity measurements should only be performed on de-energized objects!  Parallel loops may influence on test results.

Testing PE terminal

 If phase voltage is detected on the tested PE terminal, stop all measurements

immediately and ensure the cause of the fault is eliminated before proceeding with any activity!

Notes related to measurement functions: General

 The indicator means that the selected measurement cannot be performed

because of irregular conditions on input terminals.

 Insulation resistance, continuity functions and earth resistance measurements can

only be performed on de-energized objects.

 PASS / FAIL indication is enabled when limit is set. Apply appropriate limit value

for evaluation of measurement results.

 In the case that only two of the three wires are connected to the electrical

installation under test, only voltage indication between these two wires is valid.

Insulation resistance, Insulation resistance of PV systems

 Insulation resistance:

If a voltage of higher than 30 V (AC or DC) is detected between test terminals, the insulation resistance measurement will not be performed.

 Insulation resistance of PV systems:  Different pre-tests are carried out. If conditions are proper and safe the

measurement will be continued. Otherwise or or message is displayed.

 The instrument automatically discharge tested object after finished measurement.  A double click of TEST key starts a continuous measurement.

Continuity functions

 If a voltage of higher than 10 V (AC or DC) is detected between test terminals, the

continuity resistance test will not be performed.

 Compensate test lead resistance before performing a continuity measurement,

where necessary.

RCD functions

 Parameters set in one function are also kept for other RCD functions!

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

longer to complete but offers much better accuracy of fault loop resistance (in comparison to the RL sub-result in Contact voltage function).

 RCD trip-out time and RCD trip-out current measurements will only be performed

if the contact voltage in the pre-test at nominal differential current is lower than the set contact voltage limit!

 The autotest sequence (RCD AUTO function) stops when trip-out time is out of

allowable time period.

Z-LOOP

 The low limit prospective short-circuit current value depends on fuse type, fuse

current rating, fuse trip-out time and impedance scaling factor.

 The specified accuracy of tested parameters is valid only if the mains voltage is

stable during the measurement.

 Fault loop impedance measurements will trip an RCD.  The measurement of fault loop impedance using trip-lock function does not

normally trip an RCD. However, the trip limit may be exceeded if a leakage current flows to the PE protective conductor or if there is a capacitive connection between L and PE conductors.

Z-LINE / Voltage drop

 In case of measurement of Z

Line-Line

with the instrument test leads PE and N connected together the instrument will display a warning of dangerous PE voltage. The measurement will be performed anyway.

 Specified accuracy of tested parameters is valid only if mains voltage is stable

during the measurement.

Power / Harmonics / Energy / Current

 Before starting any Power measurement the current clamp settings in Settings

menu should be checked. Select appropriate current clamp model and measuring range that are best fitted to the expected current values.

 Consider polarity of current clamp (arrow on test clamp should be oriented toward

connected load), otherwise result will be negative!

PV measurements

 A 1384 PV Safety Probe must be used for PANEL, UOC/ISC, I/V and INVERTER

(AC, DC), and ISO PV measurements.

 A 1385 PV test lead must be used for INVERTER AC/DC measurements.  Before starting a PV measurement the settings of PV module type and PV test

parameters should be checked.

 Environmental parameters (Irr, T) can be measured or entered manually.  Environmental conditions (irradiance, temperature) must be stable during the

measurements.

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.

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. This indication appears for a few seconds and then the instrument turns itself off.

Figure 2.1: Discharged battery indication

The battery is charged whenever the power supply adapter is connected to the instrument. The power supply socket polarity is shown in figure 2.2. Internal circuit controls charging and assures maximum battery lifetime.

Figure 2.2: Power supply socket polarity

Symbols:

Indication of battery charging

Figure 2.3: Charging indication

Warnings related to safety:

 When connected to an installation, the instruments battery compartment can

contain hazardous voltage inside! When replacing battery cells or before opening the battery/fuse compartment cover, disconnect any measuring accessory connected to the instrument and turn off the instrument,

 Ensure that the battery cells are inserted correctly otherwise the instrument will

not operate and the batteries could be discharged.

 Do not recharge alkaline battery cells!  Use only power supply adapter delivered from the manufacturer or distributor of

the test equipment!

Notes:

 The charger in the instrument is a pack cell charger. This means that the battery

cells are connected in series during the charging. The battery cells have to be equivalent (same charge condition, same type and age).

MI 3108 EurotestPV Safety and operational considerations

 If the instrument is not to be 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 2100 mAh or above.

 Unpredictable chemical processes can occur during the charging of battery cells

that have been left unused for a longer period (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

battery cell should be checked (by comparing battery voltages, testing them in a cell charger, etc). It is very likely that only some of the battery cells are deteriorated. One different battery cell can cause an improper behavior of the entire battery pack!

 The effects described above should not be confused with the normal decrease of

battery capacity over time. Battery also loses some capacity when it is repeatedly charged / discharged. This information is provided in the technical specification from battery manufacturer.

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

Safety requirements for electrical equipment for measurement, control and laboratory use – Part 1: General requirements

BS EN 61010-2030

Safety requirements for electrical equipment for measurement, control and laboratory use – Part 2-030: Particular requirements for testing and measuring circuits

BS EN 61010031

Safety requirements for electrical equipment for measurement, control and laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and test

BS EN 61010-2032

Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-032: Particular requirements for hand-held and hand-manipulated current sensors for electrical test and measurement

Functionality

BS EN 61557

Electrical safety in low voltage distribution systems up to 1000 VAC and 1500 VAC – Equipment for testing, measuring or monitoring of protective measures

Part 1 General requirements Part 2 Insulation resistance Part 3 Loop resistance Part 4 Resistance of earth connection and equipotential bonding Part 5 Resistance to earth Part 6 Residual current devices (RCDs) in TT and TN systems Part 7 Phase sequence Part 10 Combined measuring equipment Part 12 Performance measuring and monitoring devices (PMD)

Reference standards for electrical installations and components

BS EN 61008

Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses

BS EN 61009

Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses

EN 60364-4-41

Electrical installations of buildings Part 4-41 Protection for safety – protection against electric shock

BS 7671

IEE Wiring Regulations (17th edition)

AS/NZS 3017

Electrical installations – Verification guidelines

Reference standard for photovoltaic systems

BS EN 62446

Grid connected photovoltaic systems – Minimum requirements for system documentation, commissioning tests and inspection

BS EN 61829

Photovoltaic (PV) array – On-site measurement of current - voltage characteristics

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. IEC 61010) and differ only in amended parts required by European harmonization procedure.

MI 3108 EurotestPV Instrument description

3 Instrument description

3.1 Front panel

Figure 3.1: Front panel

Legend:

LCD

128 x 64 dots matrix display with backlight.

Modifies selected parameter.

DOWN

TEST TEST Starts measurements.

Acts also as the PE touching electrode.

ESC

Goes one level back.

TAB

Selects the parameters in selected function.

Backlight, Contrast

Changes backlight level and contrast.

ON / OFF

Switches the instrument power on or off.

The instrument automatically turns off 15 minutes after the last key was pressed

HELP / CAL Accesses help menus.

Calibrates test leads in Continuity functions.

Starts Z

REF

measurement in Voltage drop sub-function.

Function selector

- RIGHT

Selects test function.

Function selector

- LEFT

MEM

Store / recall memory of instrument. Store clamp and solar settings.

Green LEDs Red LEDs

Indicates PASS / FAIL of result.

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

3 USB connector

Communication with PC USB (1.1) port

Protection cover

Current clamp measuring input #1

P/C2

Current clamp measuring input #2 Measuring input for external probes

PS/2 connector

Communication with PC serial port Connection to optional measuring adapters Connection to barcode /RFID reader Connection to Bluetooth dongle

Warnings!

 Maximum allowed voltage between any test terminal and ground is 600 V a.c.,

1000 V d.c.!

 Maximum allowed voltage between test terminals on test connector is 600 V

a.c., 1000 V d.c.!

 Maximum allowed voltage between test terminals P/C2, C1 is 3 V!  Maximum short-term voltage of external power supply adapter is 14 V!

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

4 Serial number label

5 Battery cells

Size AA, alkaline / rechargeable NiMH

MI 3108 EurotestPV: Instrument description

R: 0.0 1999 Test current: max. 8.5mA Open-circuit voltage:6.5V

Continuity 7mA

R: 0.18M 199.9M , U =50V ,100 , R: 0.12M 999M , U = 500V , 1kV U: 0V 12 00V Nominal voltages: 100V , 250V , 500V , 1kV Measuring current: min. 1mA at R =U 1k /V Short-circuit current: < 3mA

N N

Insulation resistance (EN 61557-2)

V 2 50V

Continuity

Tripping time

non-delayed (time-delayed) RCDs

1: 0ms 300ms (500ms) 2: 0ms 150ms (200ms) 5: 0ms 40ms (150ms), U : 0.0V 100.0V

Tripping current

I : 0.2 I 1.1 I AC ( t : 0ms 300ms, U : 0.0V 100.0V

N N N

1.5 I A)

Multiplier: 0.5, 1, 2, 5

Contact voltage

U : 0.0V 100.0V R : 0.00 10.00k (R =U / I )

C S S C N

R : 0. 1999 I : 0. A . kAL-N(L) PSC17 20 1 4 Nominal voltage: 100V 440V/ 15Hz 500Hz

Line impedance(EN 61 557-3)

Fault loop (EN 61557-3)

R : 0. 1999 I : 0. A . kA

PFC 14 1 4

Nominal voltage: 100V 264V/ 15Hz 500Hz

impedance

L-PE 17

Voltage, frequency

U: 0V 440V / f: 15Hz 500Hz

Phase rotation (EN 61557-7)

Nominal voltage: 100V 440V / 1 00 Results: 1.2.3 or 2.1.3

5Hz 5 Hz

RCD (EN 61557-6)

I : 10mA, 30mA, 100mA, 300mA, 500mA, 1A Nominal voltage: 100V 264V / 15Hz 500Hz

R Low (EN 61557-4)

R: 0.12 1999

Test current: min. ±200mA at 2

Open-circuit voltage: 6.5V 9.0V

Resistance to earth (EN 61557-5)

R: 0.04 9999 Open-circuit voltage: Short-circuit current

< 45V

: < 20mA

RMS

Ljubljanska 77 SI - 1354 Horjul Tel: +386 1 75 58 200 http://www.metrel.si

20 224 832

CAT III 600V

550V

Figure 3.5: Bottom

Legend:

Bottom information label

Neck belt openings

Handling side covers

3.4 Carrying the instrument

With the neck-carrying belt supplied in standard set, various possibilities of carrying the instrument are available. Operator can choose appropriate one on basis of his operation, see the following examples:

The instrument hangs around operators neck only - quick placing and displacing.

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  PV Safety Probe  Monocrystal PV reference cell  PV Temperature probe  AC/ DC current clamp  Plug test cable  Test lead, 3 x 1.5 m  Test probe, 4 pcs  Crocodile clip, 4 pcs  Set of carrying straps  PV MC 4 adapter male  PV MC 4 adapter female  PV MC 3 adapter male  PV MC 3 adapter female  RS232-PS/2 cable  USB cable  Set of NiMH battery cells  Power supply adapter  CD with instruction manual, and “Guide for testing and verification of low voltage

installations” handbook.

 Short instruction manual  Calibration Certificate

3.5.2 Optional accessories

See the attached sheet for a list of optional accessories that are available on request from your distributor.

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. All three test terminals are used for selected measurement.

Online voltages are displayed together with test terminal indication. L and N test terminals are used for selected measurement.

L and PE are active test terminals; N terminal should also be connected for correct input voltage condition.

4.1.2 Battery indication

The battery indication indicates the charge condition of battery and connection of external charger.

Battery capacity indication.

Low battery. Battery is too weak to guarantee correct result. Replace or recharge the battery cells.

Charging in progress (if power supply adapter is connected).

4.1.3 Messages

Following warnings and messages are displayed.

The change in irradiance during the measurement was above the set limit (Warn. Irr).

The difference between the Uoc STC based on measurement and Uoc STC value based on set PV module and number of modules in the string is above the set limit (Warn. Uoc).

Measurement is running, consider displayed warnings.

Conditions on the input terminals allow starting the measurement; consider other displayed warnings and messages.

Conditions on the input terminals do not allow starting the measurement, consider displayed warnings and messages.

RCD tripped-out during the measurement (in RCD functions).

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.

Warning! Dangerous voltage on the PE terminal! Stop the activity

immediately and eliminate the fault / connection problem before proceeding with any activity!

Test leads resistance in Continuity measurement is not compensated.

Test leads resistance in Continuity measurement is compensated.

High resistance to earth of test probes. Results may be impaired.

Too small current for declared accuracy. Results may be impaired. Check in Current Clamp Settings if sensitivity of current clamp can be increased.

Measured signal is out of range (clipped). Results are impaired.

Fuse F1 is broken.

External DC voltage is detected. Measurements in this operating mode are blocked.

4.1.4 Results

Measurement result is inside pre-set limits (PASS).

Measurement result is out of pre-set limits (FAIL).

Measurement is aborted. Consider displayed warnings and messages.

4.1.5 Sound warnings

Continuous sound

Warning! Dangerous voltage on the PE terminal is detected.

4.1.6 Help screens

HELP

Opens help screen.

Help menus are available in all functions. The Help menu contains schematic diagrams for illustrating how to properly connect the instrument to electric installation or PV system. After selecting the measurement you want to perform, press the HELP key in order to view the associated Help menu.

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.

Click

Toggles backlight intensity level.

Keep pressed for 1 s

Locks high intensity backlight level until power is turned off or the key is pressed again.

Keep pressed for 2 s

Bargraph for LCD contrast adjustment is displayed.

Figure 4.2: Contrast adjustment menu

Keys for contrast adjustment:

DOWN

Reduces contrast.

Increases contrast.

TEST

Accepts new contrast.

Function selector

Exits without changes.

4.2 Function selection

For selecting test / measurement function within each test mode the FUNCTION SELECTOR keys shall be used.

Keys:

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).

TAB

Selects the test parameter to be set or modified.

TEST

Runs selected test / measurement function.

MEM

Stores measured results / recalls stored results.

ESC

Exits back to main menu.

Keys in test parameter field:

UP/DOWN

Changes the selected parameter.

TAB

Selects the next measuring parameter.

Function selector

Toggles between the main functions.

MEM

Stores measured results / recalls stored results

General rule regarding enabling parameters for evaluation of measurement / test result:

Parameter OFF

No limit values, indication: _ _ _.

Value(s) – results will be marked as PASS or FAIL in accordance

with selected limit.

See Chapter 5 for more information about the operation of the instrument test functions.

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  <SOLAR> PV systems testing  <SETTINGS> Instrument settings

Figure 4.3: Main menu

Keys:

UP / DOWN

Selects appropriate option.

TEST

Enters selected option.

4.4 Settings

Different instrument options can be set in the SETTINGS menu.

Options are:

 Recalling and clearing stored results  Selection of language  Setting the date and time  Selection of reference standard for

RCD tests

 Entering Z factor  Commander support  Setting the instrument to initial

values

 Settings for Bluetooth

communication

 Settings for current clamps  Menu for synchronization with PV

Remote unit

 Settings for PV measurements

Figure 4.4: Options in Settings menu

Keys:

UP / DOWN

Selects appropriate option.

TEST

Enters selected option.

ESC / Function selector

Exits back to main menu.

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.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

4.4.2 Language

In this menu the language can be set.

Figure 4.6: Language selection

Keys:

UP / DOWN

Selects language.

TEST

Confirms selected language and exits to settings menu.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

4.4.3 Date and time

In this menu date and time can be set.

Figure 4.7: Setting date and time

MI 3108 EurotestPV Instrument operation

Keys:

TAB

Selects the field to be changed.

UP / DOWN

Modifies selected field.

TEST

Confirms new date / time and exits.

ESC

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

lost.

4.4.4 RCD standard

In this menu the used standard for RCD tests can be set.

Figure 4.8: Selection of RCD test

standard

Keys:

UP / DOWN

Selects standard.

TEST

Confirms selected standard.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

Maximum RCD disconnection times differ in various standards. The trip-out times defined in individual standards are listed below.

Trip-out times according to EN 61008 / EN 61009:

½I

N

2I

N

5I

N

General RCDs (non-delayed)

t > 300 ms

t < 300 ms

t < 150 ms

t < 40 ms

Selective RCDs (time-delayed)

t > 500 ms

130 ms < t < 500 ms

60 ms < t < 200 ms

50 ms < t < 150 ms

Trip-out times according to EN 60364-4-41:

½I

N

2I

N

5I

N

General RCDs (non-delayed)

t > 999 ms

t < 999 ms

t < 150 ms

t < 40 ms

Selective RCDs (time-delayed)

t > 999 ms

130 ms < t < 999 ms

60 ms < t < 200 ms

50 ms < t < 150 ms

Trip-out times according to BS 7671:

½I

N

2I

N

5I

N

General RCDs (non-delayed)

t > 1999

t < 300 ms

t < 150 ms

t < 40 ms

MI 3108 EurotestPV Instrument operation

Selective RCDs (time-delayed)

t > 1999

130 ms < t < 500

60 ms < t < 200

50 ms < t < 150

Trip-out times according to AS/NZS 3017

**)

½I

N

2I

N

5I

N

RCD type

IN [mA]



Note

 10

> 999 ms

40 ms

Maximum break time

> 10  30

300 ms

150 ms

40 ms

III

> 30

300 ms

150 ms

40 ms

> 30

> 999 ms

500 ms

200 ms

150 ms

130 ms

60 ms

50 ms

Minimum non-actuating time

Minimum test period for current of ½IN, RCD shall not trip-out.

**)

Test current and measurement accuracy correspond to AS/NZS 3017 requirements.

Maximum test times related to selected test current for general (non-delayed) RCD

Standard

½I

N

2I

N

5I

N

EN 61008 / EN 61009

300 ms

150 ms

40 ms

EN 60364-4-41

1000 ms

150 ms

40 ms

BS 7671

2000 ms

300 ms

150 ms

40 ms

AS/NZS 3017 (I, II, III)

1000 ms

150 ms

40 ms

Maximum test times related to selected test current for selective (time-delayed) RCD

Standard

½I

N

2I

N

5I

N

EN 61008 / EN 61009

500 ms

200 ms

150 ms

EN 60364-4-41

1000 ms

200 ms

150 ms

BS 7671

2000 ms

500 ms

200 ms

150 ms

AS/NZS 3017 (IV)

1000 ms

200 ms

150 ms

4.4.5 Z factor

In this menu Z correction factor for limit of maximum Line / Loop impedance can be set.

Figure 4.9: Selection of Z factor

Keys:

UP / DOWN

Sets Z factor value.

TEST

Confirms Z factor value.

ESC

Exits back to settings menu.

Function selectors

Exits back to main menu without changes.

Maximum impedance in the supply system is important for selection or verification of protective circuit breakers (fuses, over-current breaking devices, RCDs).

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.

Figure 4.10: Selection of commander

support

Keys:

UP / DOWN

Selects commander option.

TEST

Confirms selected option.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

Note:

 Commander disabled option is intended to disable the commander’s remote keys.

In the case of high EM interfering noise the operation of the commander can be irregular.

4.4.7 Communication

In this menu the instrument’s serial communication port can be configured and Bluetooth dongles A 1436 can be initialized.

Figure 4.11: Communication menu

Options:

COM PORT

Enters menu for setting serial communication.

BLUETOOTH DEVICES

Enters menu for viewing and selecting Bluetooth devices.

INIT. BT DONGLES

Enters menu for initialization of Bluetooth dongle(s).

Keys:

UP / DOWN

Selects option.

TEST

Confirms selected option.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

MI 3108 EurotestPV Instrument operation

4.4.7.1 Selecting serial communication

In the COM PORT menu the serial communication can be set (wired, Bluetooth or wireless).

Figure 4.12: Menu for serial

communication

Options:

COM PORT

RS232

Communication with external devices via RS232 cable.

BT DONGLE

Communication with mobile devices, Metrel Powermeters, PCs or other external devices via Bluetooth.

RS232 WIRELESS

Wireless communication with external devices (A 1378 PV remote unit).

Keys:

UP / DOWN

Selects option.

TEST

Confirms selected option.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

4.4.7.2 Searching for the Metrel Powermeter with Bluetooth connection and pairing with 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.

Figure 4.13: Bluetooth devices menu

To select a new Powermeter with Bluetooth connection press TEST in BLUETOOTH DEVICES menu. A list of found Bluetooth devices will be displayed. Select the appropriate device using the arrow keys. Confirmation with TEST key will pair those two instruments.

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.

ESC

Exits back to Bluetooth devices menu.

Function selector

Exits back to main menu without changes.

Note:

 This operation must be performed when working with the Powermeter for the first

time or if its settings were changed.

4.4.7.3 Initialization of the Bluetooth dongle(s)

The Bluetooth dongle(s) A 1436 should be initialized when they are used for the first time. During initialization the instrument sets the dongle parameters and name in order to communicate properly.

Figure 4.15: Menu for initialization of

Bluetooth dongle(s)

INIT. BT DONGLES

EurotestPV

Initializes Bluetooth dongle for EurotestPV instrument.

PowerQ series

Initializes Bluetooth dongle for Metrel Powermeter.

Keys:

UP / DOWN

Selects option.

TEST

Starts initialization of Bluetooth dongle.

ESC

Exits back to Communication menu.

Function selector

Exits back to main menu without changes.

Initialization procedure (Bluetooth dongle for the EurotestPV instrument):

1. Connect Bluetooth dongle A 1436 to the instrument’s PS/2 port.

2. Switch on the instrument.

3. Press a RESET key on the Bluetooth dongle A 1436 for at least 10 seconds.

MI 3108 EurotestPV Instrument operation

4. EurotestPV should be selected in INIT. BT DONGLES menu. Press the TEST key.

5. Wait for confirmation message and beep. Following message is displayed if dongle was initialized properly:

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.

3. Press a RESET key on the Bluetooth dongle A 1436 for at least 10 seconds.

4. PowerQ series should be selected in INIT. BT DONGLES menu. Press the TEST key.

5. Wait for confirmation message and beep. Following message is displayed if dongle was initialized properly:

EXTERNAL BT DONGLE SEARCHING OK!

6. The successfully initialized Bluetooth dongle A 1436 is now ready to be connected to a Metrel Powermeter.

Notes:

 The Bluetooth dongle A 1436 should always be initialized before first use with the

EurotestPV instrument or Metrel Powermeter.

 If the dongle was initialized by another Metrel instrument it will probably not work

properly when working with the previous instrument again. Bluetooth dongle initialization should be repeated in that case.

 For more information about communication via Bluetooth refer to chapter 8.6

Communication and A 1436 manual.

4.4.8 Initial settings

In this menu the instrument settings, measurement parameters and limits can be set to initial (factory) values.

Figure 4.16: Initial settings

dialogue

Keys:

UP / DOWN

Selects option [YES, NO].

TEST

Restores default settings (if YES is selected).

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

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

English

Contrast

As defined and stored by adjustment procedure

Z factor

0.80

RCD standards

EN 61008 / EN 61009

Commander

Enabled

Communication

RS232

Clamp settings

CLAMP 1 CLAMP 2

A1391, 40A A1391, 40A

Solar settings

See chapter 4.4.10 Solar Settings

Test mode: Function

Parameters / limit value

Sub-function

INSTALLATION:

EARTH RE

No limit

R ISO L/N, L//E, N/E, L/L

No limit Utest = 500 V

CONTINUITY (r1,rN,r2, R2, R1+R2, R1+RN)

No limit Z - LINE

Fuse type: none selected

VOLTAGE DROP

ΔU: 4.0 %

REF

: 0.00 Ω

Z - LOOP

Fuse type: none selected

Zs rcd

Fuse type: none selected

RCD

RCD t

Nominal differential current: IN=30 mA RCD type: AC

non-delayed Test current starting polarity: (0) Limit contact voltage: 50 V Current multiplier: 1

POWER:

CURRENT

SCOPE

U,I

HARMONICS U I

U h:1 ENERGY

I: 40A, U: 260A

SOLAR:

ISO PV

No limit Utest = 500 V

MI 3108 EurotestPV Instrument operation

ENV.

Measured

I/V

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.

Figure 4.17: Configuration of current clamp

measuring inputs

Parameters to be set:

Model

Model of current clamp [A1018, A1019, A1391].

Range

Measuring range of current clamp [20 A, 200 A], [40 A, 300 A].

Selection of measuring parameters Keys

UP / DOWN

Selects appropriate option.

TEST

Enables changing data of selected parameter.

MEM

Saves settings.

ESC

Exits back to clamp settings menu.

Function selectors

Exits back to main menu without changes.

Changing data of selected parameter Keys

UP / DOWN

Sets parameter.

TEST

Confirms set data.

ESC

Disable changing data of selected parameter.

Function selectors

Exits back to main menu without changes.

Note:

 Measuring range of the instrument must be considered. Measurement range of

current clamp can be higher than of the instrument.

4.4.10 Synchronization (A 1378 - PV Remote unit)

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.

During the PV tests the displayed STC results are calculated on base of set or measured environmental data in the instrument’s Environmental menu. These values are not necessarily measured at the same time as other measurements. Synchronization (of time stamps) enables to later update the PV measured results with environmental data that were measured simultaneously with the A 1378 PV Remote unit. Stored STC values are then corrected accordingly.

Selecting this option will allow synchronization of data between the instrument and PV Remote unit.

Figure 4.18: Synchronize menu

Data to be synchronized:

TIME

Instrument’s time and date will be uploaded to the PV Remote unit.

RESULT

Values of measured environmental parameters will be downloaded to the instrument. Saved STC results will be corrected accordingly.

Keys:

UP / DOWN

Selects data to be synchronized.

TEST

Synchronizes data. Follow the information on the LCD. If the synchronization succeeded a confirmation beep will follow after short connecting... and synchronizing... messages.

ESC

Exits back to settings menu.

Function selectors

Exits back to main menu.

Connection for synchronization

Figure 4.19: Connection of the instruments during synchronization

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.

TEST

Enters menu for changing parameters.

ESC

Exits back to settings menu.

Function selector

Exits back to main menu without changes.

PV module settings

Parameters of PV modules can be set in this menu. A database for up to 20 PV modules can be created / edited. Parameters are used for calculation of STC values.

Note:

 The database can also be created on the PC or mobile device and then sent to the

instrument. PCSW EurolinkPRO and some Android applications support this feature.

Figure 4.21: PV module settings menu

Parameters of PV module:

Module

PV module name

Pmax

1 W ..2000 W

Nominal power of PV module

Umpp

1.0 V .. 999 V

Voltage on maximum power point

Impp

0.01 A .. 15.0 A

Current on maximum power point

Uoc

1.0 V .. 999 V

Open circuit voltage of module

Isc 0.01 A .. 15.0 A

Short circuit current of module

NOCT

1.0 °C .. 99.0 °C

Nominal working temperature of PV cell

alfa

-5.00 mA/°C .. 300 mA/°C

Temperature coefficient of Isc

beta

-5.00 V/°C .. -0.001 V/°C

Temperature coefficient of Uoc

gamma

-5.00 %/°C .. 0.999 %/°C

Temperature coefficient of Pmax

0.01 Ω .. 9.99 Ω

Serial resistance of PV module

Selection of PV module type and parameters

MI 3108 EurotestPV Instrument operation

Keys:

UP / DOWN

Selects appropriate option.

TEST

Enters menu for changing type or parameters.

ESC, Function selector

Exits back.

MEM

Enters PV module type memory menu.

Changing a PV module type / parameter

Keys:

UP / DOWN

Sets value / data of parameter / PV module type.

TEST

Confirms set value / data.

ESC, Function selector

Exits back.

PV module type memory menu

ADD

Enters menu for adding a new PV module type.

OVERWRITE

Enters menu for storing changed data of selected PV module type.

DELETE

Deletes selected PV module type.

DELETE ALL

Deletes all PV module types.

Keys:

UP / DOWN

Selects option.

TEST

Enters selected menu.

Function selectors

Exits back to main function menu.

If Add or Overwrite is selected the menu for setting the PV module type name is displayed.

Figure 4.22: Setting name of PV module type

Keys:

 / 

Selects a character.

TEST

Selects the next character.

MEM

Confirms new name and stores it in the memory. Then returns to Module settings menu.

ESC

Deletes last letter. Returns to previous menu without changes.

If Delete or Delete all is selected a warning will be displayed.

MI 3108 EurotestPV Instrument operation

Figure 4.23: Delete options

Keys:

TEST

Confirms clearing. In Delete all option YES must be selected.

ESC / Function selector

Exits back to main function menu without changes.

PV measurements settings

Parameters for PV measurements can be set in this menu.

Figure 4.24: Selection of PV

measurement settings

Parameters for PV measurements:

Test std

Testing standard [IEC 60891, CEI 82-25]

Irr. Sens.

Type of irradiance measuring sensor [PV cell, Pyran.]

Irr. min.

Minimal valid solar irradiance for calculation [500 – 1000 W/m2]

T. sensor

Temperature for calculation [Tamb, Tcell]

Mod.Ser.

Number of modules in serial [1 – 30]

Mod.Par.

Number of modules in parallel [1 – 10]

Correct. T

Correction of measured cell temperature to compensate for the difference between the actual cell temperature and the measured temperature. [0 °C – 5 °C]. According to the EN 61829 standard the difference is typicall 2 °C. [Off, 1 °C – 5 °C]

Warn. Irr

Limit for the unstable irradiance warning [Off, 1 % – 20 %]

Warn. Uoc

Limit for the inproper Uoc warning [Off, 5 % – 50 %]

Selection of PV test parameters Keys:

UP / DOWN

Selects appropriate option.

TEST

Enables changing data of selected parameter.

MEM

Saves settings.

ESC / Function selectors

Exits back.

MI 3108 EurotestPV Instrument operation

Changing data of selected parameter

Keys:

UP / DOWN

Sets parameter.

TEST

Confirms set data.

ESC / Function selectors

Exits back.

MI 3108 EurotestPV Measurements – a.c. LV installations

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. The lead compensation is therefore very important to obtain correct result. There are two separated calibration values:

- one for r1, rN, r2, R1+R2 and R2,

- one for R1+RN.

The symbol is displayed in the Continuity message fields if the compensation was carried out successfully.

Circuits for compensating the resistance of test leads

Figure 5.1: Examples of connections for compensation

Compensation of test leads resistance procedure

 Select Continuity function.  Connect test cable to the instrument and short the test leads together

appropriately (see figure 5.1).

 Press CAL key to perform test lead compensation.  If the leads were successfully calibrated the resistance with old calibration data

is displayed first and 0.00Ω afterwards.

Figure 5.2: Results with old calibration

values

Figure 5.3: Results with new calibration

values

Note:

 The highest value for lead compensation is 5 . If the resistance is higher the

compensation value is set back to default value.

is displayed if no calibration value is stored.

MI 3108 EurotestPV Measurements – a.c. LV installations

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.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.4: Voltage in single

phase system

Test parameters for voltage measurement There are no parameters to be set.

Connections for voltage measurement

Figure 5.5: Connection of 3-wire test lead and optional adapter in three-phase system

Figure 5.6: Connection of plug cable and 3-wire test lead in single-phase system

MI 3108 EurotestPV Measurements – a.c. LV installations

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).  Store voltage measurement result by pressing the MEM key (optional).

Measurement runs immediately after selection of VOLTAGE TRMS function.

Figure 5.7: Examples of voltage measurement in three-phase system

Displayed results for single phase system:

Uln ........... Voltage between phase and neutral conductors,

Ulpe ......... Voltage between phase and protective conductors,

Unpe ........ Voltage between neutral and protective conductors,

f ............... frequency.

Displayed results for three-phase system:

U12 .......... Voltage between phases L1 and L2,

U13 .......... Voltage between phases L1 and L3,

U23 .......... Voltage between phases L2 and L3,

1.2.3 ........ Correct connection – CW rotation sequence,

3.2.1 ........ Invalid connection – CCW rotation sequence,

f ............... frequency.

MI 3108 EurotestPV Measurements – a.c. LV installations

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,  Insulation resistance of non-conductive rooms (walls and floors),  Insulation resistance of ground cables,  Resistance of semi-conductive (antistatic) floors.

Four Insulation resistance sub-functions are available:

 ISO L/E,  ISO L/N  ISO L/L  ISO N/E

The insulation resistance tests are carried out in the same way regardless which subfunction is selected. However it is important to select the appropriate sub-function in order to classify the measurement to be correctly considered in verification documents (Electrical Installation Certificate, Periodic Inspection Report etc.).

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.8: Insulation

resistance

Test parameters for insulation resistance measurement

Measurement

Subfunction [ISO L/E, ISO L/N, ISO N/E, ISO L/L]

Uiso

Test voltage [50 V, 100 V, 250 V, 500 V, 1000 V]

Limit

Minimum insulation resistance [OFF, 0.01 M ÷ 200 M]

Test circuits for insulation resistance

MI 3108 EurotestPV Measurements – a.c. LV installations

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.  Enable and set limit value (optional).  Disconnect tested installation from mains supply (and discharge insulation as

required).

 Connect test cable to the instrument and to the item to be tested (see figure

5.9).

 Press the TEST key to perform the measurement (double click for continuous

measurement and later press to stop the measurement).

 After the measurement is finished wait until tested item is fully discharged.  Store the result by pressing the MEM key (optional).

Figure 5.10: Example of insulation resistance measurement result

Displayed results:

R.........................Insulation resistance

Um......................Test voltage – actual value.

MI 3108 EurotestPV Measurements – a.c. LV installations

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:

 r

 R

1+R2

 R

1+RN

It is important to select the appropriate sub-function in order to classify the measurement to be correctly considered in verification documents (Electrical Installation Certificate, Periodic Inspection Report etc.).The r1, rN, r2, R1+R2 and R2 continuity tests are carried out between L and PE terminals in the same way regardless of which sub-function is selected. The R1+RN continuity test is carried out between L and N terminals.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.11: Example R

Test parameters for Continuity measurement

Measurement

Subfunction [r1, r2, rN, R2, R1+R2, R1+RN]

Limit

Maximum resistance [OFF, 0.1  ÷ 20.0 ]

The Continuity measurement is performed with automatic polarity reversal of the test voltage according to BS EN 61557-4.

MI 3108 EurotestPV Measurements – a.c. LV installations

Test circuits for Continuity measurement

R1+RN

Figure 5.12: Connections for testing the r1, rN, r2 and R1+RN sections of the wiring in ring

circuits

R1+R2

Figure 5.13: Connections for testing the R2 and R1+R2 sections of the wiring in final circuits

Continuity measurement procedure

 Select Continuity function using the function selector switch.  Set sub-function with / keys  Enable and set limit (optional).  Connect test cable to the the instrument.  Compensate the test leads resistance (if necessary, see section 5.1).

MI 3108 EurotestPV Measurements – a.c. LV installations

 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

(optional).

Figure 5.14: Example of Continuity result

Displayed result:

R................Continuity result

R+..............Result at positive polarity

R-...............Result at negative test polarity

5.5 Ring Continuity

With Easy Switch A1214 the resistance measurements in final ring circuits can be simplified. The Easy Switch cares for correct connectivity at the switchboard. r1, rN, r2 or R1+R2, R1+RN measurements can be performed in one go.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.15:Ring Continuity r1, rN, r

Figure 5.16: Ring Continuity R1+R2,

R1+RN

MI 3108 EurotestPV Measurements – a.c. LV installations

Test parameters for Ring Continuity measurement

Measurement

Subfunction [(r1, r2, rN), (R1+R2, R1+RN)]

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 r1, rN and r

MI 3108 EurotestPV Measurements – a.c. LV installations

Figure 5.18: Step 2 - measurement of resistances R1+R2, R1+RN

MI 3108 EurotestPV Measurements – a.c. LV installations

Ring Continuity measuring procedure Step 1: r1, rN, 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)  Connect Easy switch to the final ring circuit. The electrical installation must be

de-energized during the test (see figure 5.18).

 Press the TEST key to perform the measurement.  Perform measurements of r1, rN, and r2.  Commit results (TAB key) to r1, rN, and r2.  The r1, rN, r2

results can be cleared with the TAB key.

 Store the results (optional).

From r1, rN and r2 results reference values (R1+RN)/4, (R1+R2)/4 are calculated. The results are kept until they are changed or cleared. Take care that measuring leads are compensated.

Figure 5.19: Examples of Ring Continuity test – Step 1

Displayed results:

r1 ............. Ring resistance of line conductors (committed and measured)

rN ............ Ring resistance of neutral conductors (committed and measured)

r2 ............. Ring resistance of protective conductors (committed and measured)

Step 2: R1+RN, R1+R2 resistance measuring procedure

 Easy switch must stay connected to the final ring circuit. The electrical

installation must be de-energized during the test (see figure 5.19).

 Select the RING function.  Set sub-function R1+RN, R1+R2  Connect plug cable or test cable to the instrument.  Compensate test leads resistance (if necessary, see chapter 5.1).

 Connect plug cable or test cable to a socket in final ring circuit.  Press the TEST key for measurements.  For correct ring wiring the results must be approximately the same as reference

value (r1+rN)/4 and (r1+r2)/4. The resistance R1+R2 slightly increases with length if cross-section of PE conductor is smaller than of line conductor.

 Commit results (TAB key) to R1+RN and R1+R2 positions.

MI 3108 EurotestPV Measurements – a.c. LV installations

 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  Repeat the measurement on all sockets of the final ring circuit.

 The R1+RN and R1+R2 results can be cleared with the TAB key  After the measurements are finished, store the result (optional).

Figure 5.20: Examples of Ring Continuity test – step 2

Displayed results:

R1+RN. ......... Reference test value, committed and measured

R1+R2 ........... Reference test value, committed and measured

(r1+r2)/4 ........ Calculated reference value,

(r1+rN)/4 ........ Calculated reference value.

MI 3108 EurotestPV Measurements – a.c. LV installations

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,  Trip-out time,  Trip-out current,  RCD autotest.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.21: RCD test

Test parameters for RCD test and measurement

TEST

RCD sub-function test [RCDt, RCD I, AUTO, Uc].

IN

Rated RCD residual current sensitivity IN [10 mA, 30 mA, 100 mA, 300 mA, 500 mA, 1000 mA].

type

RCD type AC, A, F, B, B+, starting polarity [ , , , ,

selective

or general characteristic.

MUL

Multiplication factor for test current [½, 1, 2, 5 IN].

Ulim

Conventional touch voltage limit [25 V, 50 V].

Notes:

 Ulim can be selected in the Uc sub-function only.  Selective (time delayed) RCDs have delayed response characteristics. As the

contact voltage pre-test or other RCD tests influence the time delayed RCD it takes a certain period to recover into normal state. Therefore a time delay of 30 s is inserted before performing trip-out test by default.

Connections for testing RCD

Figure 5.22: Connecting the plug cable and the 3-wire test lead

MI 3108 EurotestPV Measurements – a.c. LV installations

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. It shall always be lower than the conventional safety limit voltage.

The contact voltage is measured with a test current lower than ½ I

N

to avoid trip-out of

the RCD and then normalized to the rated IN.

Contact voltage measurement procedure

 Select the RCD function using the function selector keys.  Set sub-function Uc.  Set test parameters (if necessary).  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figure 5.21).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

The contact voltage result relates to the rated nominal residual current of the RCD and is multiplied by an appropriate factor (depending on RCD type and type of test current). The

1.05 factor is applied to avoid negative tolerance of result. See table 5.1 for detailed contact voltage calculation factors.

RCD type

Contact voltage Uc

proportional to

Rated IN

1.05IN

any

21.05IN

A, F

1.41.05IN

 30 mA

A, F

21.41.05IN

A, F

21.05IN

< 30 mA

A, F

221.05IN

B, B+

21.05IN

any

B, B+

221.05IN

Table 5.1: Relationship between Uc and I



Loop resistance is indicative and calculated from Uc result (without additional proportional factors) according to:





Figure 5.23: Example of contact voltage measurement results

MI 3108 EurotestPV Measurements – a.c. LV installations

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.

Trip-out time measurement procedure

 Select the RCD function using the function selector keys.  Set sub-function RCDt.  Set test parameters (if necessary).  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figure 5.21).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 5.24: Example of trip-out time measurement results

Displayed results:

t ........... Trip-out time,

Uc ........ Contact voltage for rated IN.

5.6.3 Trip-out current (RCD I)

A continuously rising residual current is intended for testing the threshold sensitivity for RCD trip-out. The instrument increases the test current in small steps through appropriate range as follows:

RCD type

Slope range

Waveform

Start value

End value

0.2IN

1.1IN

Sine

A, F (IN  30 mA)

0.2IN

1.5IN

Pulsed

A, F (IN = 10 mA)

0.2IN

2.2IN

B, B+

0.2IN

2.2IN

Maximum test current is I (trip-out current) or end value in case the RCD didn’t trip-out.

MI 3108 EurotestPV Measurements – a.c. LV installations

Trip-out current measurement procedure

 Select the RCD 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).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Trip-out

After the RCD is turned on again

Figure 5.25: Trip-out current measurement result examples

Displayed results:

I…….Trip-out current, Uci…Contact voltage at trip-out current I or end value in case the RCD didn’t trip, t…….Trip-out time.

MI 3108 EurotestPV Measurements – a.c. LV installations

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.

RCD autotest procedure

RCD Autotest steps

Notes

 Select the RCD function using the function selector keys.

 Set sub-function AUTO.

 Set test parameters (if necessary).

 Connect test cable to the instrument.

 Connect test leads to the item to be tested (see figure

5.23).

 Press the TEST key to perform the test.

Start of test

 Test with I

N

, 0 (step 1).

RCD should trip-out

 Re-activate RCD.

 Test with I

N

, 180 (step 2).

RCD should trip-out

 Re-activate RCD.

 Test with 5I

N

, 0 (step 3).

RCD should trip-out

 Re-activate RCD.

 Test with 5I

N

, 180 (step 4).

RCD should trip-out

 Re-activate RCD.

 Test with ½IN, 0 (step 5).

RCD should not tripout

 Test with ½IN, 180 (step 6).

RCD should not tripout

 Trip-out current test, 0 (step 7).

RCD should trip-out

 Re-activate RCD.

 Trip-out current test, 180 (step 8).

RCD should trip-out

 Re-activate RCD.

 Store the result by pressing the MEM key (optional).

End of test

MI 3108 EurotestPV Measurements – a.c. LV installations

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

Top

Bottom

Figure 5.27: Two parts of result field in RCD autotest

MI 3108 EurotestPV Measurements – a.c. LV installations

Displayed results:

x1 ........ Step 1 trip-out time ( , IN, 0º),

x1 ........ Step 2 trip-out time ( , IN, 180º),

x5 ........ Step 3 trip-out time ( , 5IN, 0º),

x5 ........ Step 4 trip-out time ( , 5IN, 180º),

x½ ....... Step 5 trip-out time ( , ½IN, 0º),

x½ ....... Step 6 trip-out time ( , ½IN, 180º),

I ......... Step 7 trip-out current (0º),

I ......... Step 8 trip-out current (180º),

Uc ........ Contact voltage for rated IN.

Notes:

 The autotest sequence is immediately stopped if any incorrect condition is

detected, e.g. excessive Uc or trip-out time out of bounds.

 Auto test is finished without x5 tests in case of testing the RCD types A, F with

rated residual currents of In = 300 mA, 500 mA, and 1000 mA. In this case auto test result passes if all other results pass, and indications for x5 are omitted.

 Tests for sensitivity (I ,, steps 7 and 8) are omitted for selective type RCD.

MI 3108 EurotestPV Measurements – a.c. LV installations

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. The measurement is covered by requirements of the BS EN 615573 standard.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.28: Fault loop impedance

Test parameters for fault loop impedance measurement

Test

Selection of fault loop impedance sub-function [Zloop, Zs rcd]

Fuse type

Selection of fuse type [---, BS88-2, BS88-3, BS3036, BS1362, B, C, D]

Fuse I

Rated current of selected fuse

Fuse T

Maximum breaking time of selected fuse

Lim

Minimum short circuit current for selected fuse.

See Appendix A for reference fuse data.

Circuits for measurement of fault loop impedance

Figure 5.29: Connection of plug cable and universal test cable

MI 3108 EurotestPV Measurements – a.c. LV installations

Fault loop impedance measurement procedure

 Select the Zloop or 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).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 5.30: Examples of loop impedance measurement result

Displayed results:

Z .............. Fault loop impedance,

ISC ............ Prospective fault current,

Lim .......... High limit fault loop impedance value.

Prospective fault current I

PFC

is calculated from measured impedance as follows:

factorscalingZ

PEL

PFC

_





where:

Un ........ Nominal U

L-PE

voltage (see table below),

Scaling factor.......Impedance correction factor (see chapter 4.4.5).

Input voltage (L-PE)

110 V

(93 V  U

L-PE

 134 V)

230 V

(185 V  U

L-PE

 266 V)

Notes:

 High fluctuations of mains voltage can influence the measurement results (the

noise sign is displayed in the message field). In this case it is recommended to repeat few measurements to check if the readings are stable.



The Zloop test will trip-out the RCD in RCD-protected electrical installation.

 Select Zs rcd to prevent trip-out of RCD in RCD protected installation.

MI 3108 EurotestPV Measurements – a.c. LV installations

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. The highest current is defined as the nominal current of the circuit's fuse. The limit values are described in the standard EN 60364-5-52.

Sub-functions:

 Z LINE - Line impedance measurement according to BS EN 61557-3,  ΔU – Voltage drop measurement.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.31: Line impedance

Figure 5.32: Voltage drop

Test parameters for line impedance measurement

Test

Selection of line impedance [Zline] or voltage drop [ΔU] sub-function

FUSE type

Selection of fuse type [---, BS88-2, BS88-3, BS3036, BS1362, B, C, D]

FUSE I

Rated current of selected fuse

FUSE T

Maximum breaking time of selected fuse

Lim

Minimum short circuit current for selected fuse.

See Appendix A for reference fuse data. Additional test parameters for voltage drop measurement

ΔU

MAX

Maximum voltage drop [3.0 % ÷ 9.0 %].

MI 3108 EurotestPV Measurements – a.c. LV installations

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.  Select test parameters (optional).  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figure 5.33).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 5.34: Examples of line impedance measurement result

Displayed results:

Z .............. Line impedance,

ISC ............ Prospective short-circuit current,

Lim .......... High limit line impedance value.

Prospective fault current I

PFC

is calculated from measured impedance as follows:

factorscalingZ

LNL

PFC

)(







where:

Un ........ Nominal U

L-N(L)

voltage (see table below),

Scaling factor.......Impedance correction factor (see chapter 4.4.5).

Input voltage range (L-N or L1-L2)

MI 3108 EurotestPV Measurements – a.c. LV installations

110 V

(93 V  U

L-N

 134 V)

230 V

(185 V  U

L-N

 266 V)

400 V

(321 V  U

L-L

 485 V)

Note:

 High fluctuations of mains voltage can influence the measurement results (the

noise sign is displayed in the message field). In this case it is recommended to repeat few measurements to check if the readings are stable.

5.8.2 Voltage drop

The voltage drop is calculated based on the difference of line impedance at connection points (sockets) and the line impedance at the reference point (usually the impedance at the switchboard).

Circuits for measurement of voltage drop

Figure 5.35: Phase-neutral or phase-phase voltage drop measurement – connection of

plug cable and 3-wire test lead

Voltage drop measurement procedure Step 1: Measuring the impedance Zref at origin

 Select the ΔU sub-function using the function selector keys and / keys.  Select test parameters (optional).  Connect test cable to the instrument.  Connect the test leads to the origin of electrical installation (see figure 5.35).  Press the CAL key to perform the measurement.

Step 2: Measuring the voltage drop

 Select the ΔU sub-function using the function selector keys and / keys.  Select test parameters (Fuse type must be selected).  Connect test cable or plug commander to the instrument.  Connect the test leads to the tested points (see figure 5.29).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

MI 3108 EurotestPV Measurements – a.c. LV installations

Step 1 - Zref

Step 2 - Voltage drop

Figure 5.36: Examples of voltage drop measurement result

Displayed results:

ΔU ........... Voltage drop,

ISC ............ Prospective short-circuit current,

Z .............. Line impedance at measured point,

Zref .......... Reference impedance

Voltage drop is calculated as follows:

 

100

)(

% 





NREF

IZZ

where:

ΔU ........ calculated voltage drop

Z………impedance at test point

REF

…...impedance at reference point IN………rated current of selected fuse UN…….nominal voltage (see table below)

Input voltage range (L-N or L1-L2)

110 V

(93 V  U

L-PE

 134 V)

230 V

(185 V  U

L-PE

 266 V)

400 V

(321 V  U

L-N

 485 V)

Notes:

 If the reference impedance is not set the value of Z

REF

is considered as 0.00 Ω.

 The Z

REF

is cleared (set to 0.00 Ω) if pressing CAL key while instrument is not

connected to a voltage source.

 I

is calculated as described in chapter 5.8.1 Line impedance and prospective

short circuit current.

 If the measured voltage is outside the ranges described in the table above the ΔU

result will not be calculated.

 High fluctuations of mains voltage can influence the measurement results (the

noise sign is displayed in the message field). In this case it is recommended to repeat few measurements to check if the readings are stable.

MI 3108 EurotestPV Measurements – a.c. LV installations

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.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 5.37: Earth resistance

Test parameters for earth resistance measurement

Limit

Maximum resistance OFF, 1  ÷ 5 k

Connections for earth resistance measurement

Figure 5.38: Resistance to earth, measurement of main installation earthing

MI 3108 EurotestPV Measurements – a.c. LV installations

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).  Connect test leads to the instrument.  Connect the item to be tested (see figures 5.38, 5.39).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 5.40: Example of earth resistance measurement result

Displayed results for earth resistance measurement:

R.............. Earth resistance,

Rp............ Resistance of S (potential) probe,

Rc ............ Resistance of H (current) probe.

Notes:

 High resistance of S and H probes could influence the measurement results. In

this case, “Rp” and “Rc” warnings are displayed. There is no pass / fail indication

in this case.

 High noise currents and voltages in earth could influence the measurement results.

The tester displays the warning in this case.

 Probes must be placed at sufficient distance from the measured object.

MI 3108 EurotestPV Measurements – a.c. LV installations

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. An often reason for this fault is incorrect wiring (see examples below). When touching the TEST key in all functions that requires mains supply the user automatically performs this test.

Examples for application of PE test terminal

Figure 5.41: Reversed L and PE conductors (tip commander)

L1 N

Reversed phase and protection conductors!

MOST DANGEROUS SITUATION!

LPEN

L/L1

N/L2

PE/L3

Figure 5.42: Reversed L and PE conductors (application of 3-wire test lead)

MI 3108 EurotestPV Measurements – a.c. LV installations

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.  If PE terminal is connected to phase voltage the warning message is displayed,

instrument buzzer is activated, and further measurements are disabled in Zloop and RCD functions.

Warning:

 If dangerous voltage is detected on the tested PE terminal, immediately stop all

measurements, find and remove the fault!

Notes:

 PE test terminal is active in the INSTALLATION operating mode (except in the

VOLTAGE, Low ohm, Earth and Insulation functions).

 PE test terminal does not operate in case the operator’s body is completely

insulated from floor or walls!

 For operation of PE test terminal on commanders refer to Appendix D

Commanders.

MI 3108 EurotestPV Solar measurements – PV systems

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  Environmental parameters  Open voltage and short circuit test  I-V curve test

6.1 Insulation resistance on PV systems

The Insulation resistance measurement is performed in order to ensure safety against electric shock through insulation between live parts on PV installations and earth. The followed by a test between panel / string / array positive and earth).measurement is carried out according to test method 1 in IEC / EN 62446 (test between panel / string / array negative and earth

See chapter 4.2 Function selection for instructions on key functionality. The input voltage is displayed in order to check proper connection before carrying out the test.

Figure 6.1: Insulation

resistance

Test parameters for insulation resistance measurement on PV systems

TEST

Roc- , Roc+

Uiso

Test voltage [50 V, 100 V, 250 V, 500 V, 1000 V]

Limit

Minimum insulation resistance [OFF, 0.01 M ÷ 200 M]

MI 3108 EurotestPV Solar measurements – PV systems

Test circuits for insulation resistance on PV systems

Figure 6.2: Connections for insulation resistance measurement on PV systems

Insulation resistance measuring procedure

 Select the Roc- sub-function using the function selector keys and / keys.  Set the required test voltage.  Enable and set limit value (optional).  Connect PV safety probe to the instrument (see figure 6.2)  Connect accessories to the PV system (see figure 6.2).  Press the TEST key to perform the measurement (double click for continuous

measurement and later press to stop the measurement).

 After the measurement is finished wait until tested item is fully discharged.  Store the result by pressing the MEM key (optional).  Select the Roc+ sub-function using the  /  keys.  Reconnect DC+ lead (see figure 6.2).  Press the TEST key to perform the measurement (double click for continuous

measurement and later press to stop the measurement).

 After the measurement is finished wait until tested item is fully discharged.  Store the result by pressing the MEM key (optional).

Figure 6.3: Examples of insulation resistance measurement result

Displayed results:

Roc+, Roc...........Insulation resistance

Um......................Test voltage – actual value.

U: ...................... Actual voltage on test inputs

MI 3108 EurotestPV Solar measurements – PV systems

6.2 PV inverter test

The test is intended to check proper operation of the PV inverter. Following functions are supported:

 Measuring of DC values at inverter’s input and AC values at inverter’s output.  Calculation of the efficiency of the inverter.

With the EurotestPV instrument one DC and one AC signal can be measured at the same time. 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. At the end of the measurement the results from Powermeter are sent to and displayed on the EurotestPV instrument.

See chapter 4.2 Function selection for instructions on key functionality. The input voltages are displayed in order to check proper connection before carrying out the test.

Figure 6.4: Examples of PV inverter test starting screens

Figure 6.5: Examples of PV inverter test starting screens – three phase a.c.output

Settings and parameters for PV inverter test

Input

Inputs/ Outputs being measured [ AC, DC, AC/DC, AC3, AC3/DC]

MI 3108 EurotestPV Solar measurements – PV systems

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

MI 3108 EurotestPV Solar measurements – PV systems

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)

 Select INVERTER sub-function using the function selector keys and / keys.  Connect PV safety probe and current clamp to the instrument (see figures 6.6

and 6.7) or

 Connect PV test lead A 1385 and current clamps to the instrument (see figure

6.8)

 Connect accessories to the PV system (see figures 6.6 to 6.8).  Check input voltages.  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

MI 3108 EurotestPV Solar measurements – PV systems

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

 Select INVERTER sub-function using the function selector keys and / keys.  Be sure that the EurotestPV instrument and Powermeter are connected via serial

cable or Bluetooth.

 Connect PV safety probe and DC current clamp to the EurotestPV instrument

(see figures 6.9 and 6.10).

 Connect voltage test leads and AC current clamps to the Powermeter.  Connect voltage test leads to L1, L2, L3 and N at the output side of the inverter

(see figures 6.9 and 6.10).

 Connect accessories to the PV system (see figures 6.9 and 6.10).  Check input voltages on the instrument and measurement results on the

Powermeter (best to be in Power measurements menu).

 Press the TEST key to perform the measurement. Results from both instruments

are displayed on the EurotestPV screen. A.C. measurement results in detail are displayed on Powermeter also.

 Store the result by pressing the MEM key (optional).

Figure 6.11: Examples of PV inverter test results screens - 1 phase a.c. output

Figure 6.12: Examples of PV inverter test results screens - 3 phase a.c. output

Figure 6.13: Example of Powermeter result screen - 3 phase a.c. output

Displayed results for PV inverter test:

MI 3108 EurotestPV Solar measurements – PV systems

DC column:

U.............. measured voltage at the input of the inverter

I ............... measured current at the input of the inverter

P .............. measured power at the input of the inverter

AC column:

U.............. measured voltage at the output of the inverter

I ............... measured current at the output of the inverter

P .............. measured power at the output of the inverter

AC (3 phase power) column

Pt ............. measured total power at the output of the inverter

P1 ............ measured power of phase 1 at the output of the inverter

P2 ............ measured power of phase 2 at the output of the inverter

P3 ............ measured power of phase 3 at the output of the inverter

η…......... .. calculated efficiency of the inverter

Notes:

 With one current clamp the complete test can be performed in two steps. Input

should be set to DC and AC separately.

 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.

6.3 PV panel test

PV panel test is intended to check proper operation of PV panels. Following functions are supported:

 measuring of output voltage, current and power of PV panel,  comparison of measured PV output values (MEAS values) and calculated nominal

data (STC values)

 comparison of measured PV output power (Pmeas) and theoretical output power

(Ptheo)

The PV panel test results are divided into three screens. See chapter 4.2 Function selection for instructions on key functionality. The input voltage is displayed in order to check proper connection before carrying out the test.

Figure 6.14: PV module test starting screens

MI 3108 EurotestPV Solar measurements – PV systems

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.  Connect the PV system to be tested (see figure 6.15).  Check input voltage.  Press the TEST key to perform the test.  Store the result by pressing the MEM key (optional).

Figure 6.16: Examples of PV measurement results

Displayed results are:

MEAS column

U.............. measured output voltage of the panel

I ............... measured output current of the panel

P .............. measured output power of the panel

STC column

U.............. calculated output voltage of the panel at STC

I ............... calculated output current of the panel at STC

P .............. calculated output power of the panel at STC

Pstc… ...... measured output power of the panel at STC

Pmax…... nominal output power of the panel at STC

η1….. ....... efficiency of the panel at STC

Pmeas… . measured output power of the panel at momentary conditions

MI 3108 EurotestPV Solar measurements – PV systems

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

parameters should be checked.

 For calculation of STC results PV module type, PV test parameters, Uoc, Isc, Irr

and Tcell values must be measured or be entered manually before the test. The results in ENV. and Uoc/Isc menus are considered. If there are no results in Uo/Isc menu the instrument will consider results in I-V menu.

 The Uoc, Isc, Irr and T measurements should be carried out immediately before

the PANEL test. Environmental conditions must be stable during the tests.

 For best results PV remote unit A 1378 should be used.

6.4 Measuring of environmental parameters

Temperature and solar irradiance values must be known for:

 Calculation of nominal values at standard test conditions (STC),  Checking that environmental conditions are suitable for carrying out the PV tests.

The parameters can be measured or entered manually. The probes can be connected to the instrument or to the PV remote unit A 1378.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 6.17: Environmental

parameters screen

Test parameters for measuring / setting of environmental parameters

INPUT

Input of environmental data [ MEAS, MANUAL]

MI 3108 EurotestPV Solar measurements – PV systems

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).  Connect the item to be tested (see figure 6.18).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 6.19: Example of measured results

Displayed results for environmental parameters:

Irr………………...solar irradiance Tamb or Tcell…. temperature of ambient or PV cells

Note:

 If the Irradiance result is lower than the set minimal value Irr min the STC results

will not be calculated (message is displayed).

Procedure for manual entering of environmental parameters

If the data is measured with other measuring equipment they can be entered manually. Select ENV. function and MANUAL sub-function using the function selector keys and / keys.

Keys:

TEST

Enters menu for manual setting of environmental parameters. Enters menu for changing selected parameter. Confirms set value of parameter.

 / 

Selects environmental parameter. Selects value of parameter.

MI 3108 EurotestPV Solar measurements – PV systems

Function selector

Exits environmental menu and select PV measurement.

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.

6.2.1 Operation with A1378 PV Remote Unit

See PV Remote Unit User Manual.

6.5 Uoc / Isc test

The Uoc / Isc test is intended to check if protection devices in the d.c. part of the PV installation are effective. The measured data can be calculated to nominal data (STC values).

See chapter 4.2 Function selection for instructions on key functionality.

Figure 6.21: Uoc / Isc test

The input voltage is displayed in order to check proper connection before carrying out the test.

MI 3108 EurotestPV Solar measurements – PV systems

Connection for Uoc / Isc test

Figure 6.22: Uoc / Isc test

Uoc / Isc test procedure

 Select Uoc / Isc sub-function using the function selector keys and / keys.  Connect PV safety probe and sensors (optional) to the instrument.  Connect the item to be tested (see figure 6.22).  Check input voltage.  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 6.23: Example of Uoc / Isc measurement results

Displayed results for PV panel test: MEAS column

Uoc .......... measured open voltage of the panel

Isc............ measured short circuit current of the panel

STC column

Uoc .......... calculated open voltage at STC

Isc............ calculated short circuit current at STC

Notes:

 Before starting the PV measurements settings of PV module type and PV test

parameters should be checked.

 For calculation of STC results correct PV module type, PV test parameters, Irr and

Tcell values must be measured or be entered manually before the test. The Irr and T results in ENV. menu are considered. Refer to Appendix E for further information.

 The Irr and T measurements should be carried out immediately before the Uoc /

Isc test. Environmental conditions must be stable during the tests.

 For best results PV remote unit A 1378 should be used.

MI 3108 EurotestPV Solar measurements – PV systems

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.

Figure 6.24: I / V curve starting screens

The data to be measured is divided into three screens. See chapter 4.2 Function selection for instructions on key functionality.

Settings parameters for I / V curve test

1/3

Number of screen.

STC

Results (STC, measured, both) to be displayed.

Connection for the I / V curve test

Figure 6.25: I / V curve test

MI 3108 EurotestPV Solar measurements – PV systems

I / V curve test procedure

 Select I / V sub-function using the function selector keys and / keys.  Check or set PV module and PV testing parameters and limits (optional).  Connect PV safety probe to the instrument.  Connect environmental probes to the instrument (optional).  Connect the item to be tested (see figure 6.25).  Press the TEST key to perform the measurement.  Store the result by pressing the MEM key (optional).

Figure 6.26: Example of I / V curve results

Displayed results for I / V curve test:

Uoc .......... measured / STC open circuit voltage of the panel

Isc............ measured / STC short circuit current of the panel

Umpp ....... measured / STC voltage at maximal power point

Impp ........ measured / STC current at maximal power point

Pmpp ....... measured / STC maximal output power of the panel

Notes:

 Before starting the PV measurements settings of PV module type and PV test

parameters should be checked.

 For calculation of STC results correct PV module type, PV test parameters, Irr and

Tcell values must be measured or be entered manually before the test. The Irr. and T results in ENV. menu are considered. Refer to Appendix E for further information.

 The Irr. and T measurements should be carried out immediately before the I / V

curve test. Environmental conditions must be stable during the tests.

 For best results PV remote unit A 1378 should be used.

6.7 Measurement of cell temperature before test

The standard IEC 61829 recommends procedure for choosing and recording appropriate conditions for measurement. One of the recommendations is that the temperature of the PV array must be equilibrated before the test. In combination with the PV remote unit A 1378 the instrument enables to store the measured cell temperatures 0 min, 5 min, 10 min and 15 minutes before PV tests (I/ V curve measurement, Uoc/Isc test and PV panel test).

The cell temperature should be measured with A1378 before the PV test. After synchronization of results between the instrument and A1378 the instrument enables to add temperature values before the test to stored I/ V curve, Uoc/Isc, and PV panel test results.

MI 3108 EurotestPV Solar measurements – PV systems

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 .......... cell temperature 10 minutes before the PV test

T5 ............ cell temperature 5 minutes before the PV test

T0 ............ cell temperature at the moment before the PV test

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,  Displaying of voltage and current waveforms,  Energy counting.

7.1 Power

The Power function is intended to measure the standard power parameters P, Q, S, THDU and PF.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 7.1: Power menu

Settings and parameters for Power test

There are no parameters to be set in this menu.

Connection for Power test

Figure 7.2: Power measurement

MI 3108 EurotestPV Measurements - Power & energy

Power test procedure

 Select POWER sub-function using the function selector keys and / keys.  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

figure 7.2).

 Press the TEST key to start the continuous measurement.  Press the TEST key again to stop the measurement.  Store the result by pressing the MEM key (optional).

Figure 7.3: Power measurement results

Displayed results for the Power measurements:

P .............. active power

S .............. apparent power

Q ............. reactive power (capacitive or inductive)

PF…… .... power factor ( capacitive or inductive)

THDU……voltage total harmonic distortion

Notes:

 Consider polarity and setup of current clamps (see chapter 4.4.8 Clamp settings).  Results can also be stored while the measurement is running.

7.2 Harmonics

Harmonics are components of the voltage and currents signal with an integer multiple of the fundamental frequency. The harmonic values are an important parameter of power quality.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 7.4: Harmonics menu

Settings and parameters in Harmonics function

Input

Displayed parameters [ voltage U or current I]

h:0..h:11

Selected harmonic

Connection for the Harmonics measurement

(See figure 7.2)

MI 3108 EurotestPV Measurements - Power & energy

Harmonics measurement procedure

 Select HARMONICS sub-function using the function selector keys and /

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

figure 7.2).

 Press the TEST key to start the continuous measurement.  Press the TEST key again to stop the measurement.  Store the result by pressing the MEM key (optional)

Figure 7.5: Examples of Harmonics measurement results

Displayed results for the Harmonics measurements:

Uh............ TRMS voltage of selected harmonic

Ih ............. TRMS current of selected harmonic

THDU……voltage total harmonic distortion THDI…… . voltage total harmonic distortion

Notes:

 Parameters (input and number of harmonic) can be changed and results can also

be stored while the measurement is running.

 Displayed graph is auto-ranged.

7.3 Scope

The Scope function is intended to check the shape of voltage and current.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 7.6: Scope menu

Settings and parameters in Scope function

Input

Displayed parameters [ voltage U or current I or both]

Connection for the Scope measurement

(See figure 7.2)

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

figure 7.2).

 Press the TEST key to start the continuous measurement.  Press the TEST key again to stop the measurement.  Store the result by pressing the MEM key (optional)

Figure 7.7: Example of Scope measurement results

TRMS values of voltage and current are displayed.

Notes:

 The parameter input can be changed and results can also be stored while the

measurement is running.

 Displayed waveforms are auto-ranged.

7.4 Current

This function is intended for measurement of load and leakage currents with current clamps. Two independent measuring inputs are available.

See chapter 4.2 Function selection for instructions on key functionality.

Figure 7.8: Current menu

Settings and parameters for current measurement

Input

Selected channel [C1, C2, both]

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.  Connect the clamp(s) to the item to be tested (see figure 7.9).  Press the TEST key to start the continuous measurement.  Press the TEST key again to stop the measurement.  Store the result by pressing the MEM key (optional).

Figure 7.10: Examples of current measurement result

Displayed results for Current measurement: I, I1, I2 …..…..Current

Note:

 Channel C2 is intended for measuring with clamps A 1391 only.

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

MAX

Maximal expected TRMS current during measurement [I

range

, I

range

/10,

range

/100]

MAX

Maximal expected TRMS voltage during measurement [ 260 V, 500 V]

Connection for the Energy measurements

(See figure 7.2)

Energy measurement procedure

 Select ENERGY sub-function using the function selector keys and / keys.  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

figure 7.2).

 Press the TEST key to start the measurement.  Press the TEST key again to stop the measurement.  Store the result by pressing the MEM key (optional).

Figure 7.12: Example of Energy measurement results

Displayed results for the Energy measurements:

E+ ............ consumed energy (load)

E-............. generated energy (source)

P .............. momentary active power during energy measurement

t…………. time

Notes:

 Consider polarity and setup of current clamps (see chapter 4.4.8 Clamp settings).  I

MAX

and U

MAX

should be set high enough in order to avoid clamping of measured

signals. Clamping will results in wrong energy result.

 If measured currents and voltages are lower than 20% of set I

MAX

, U

MAX

the

accuracy will be impaired.

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

structure level, the highest level),

 Distribution Board (2

structure level),

 Circuit, Earth Electrode, Bonding conductors (3

structure level),

 Connection (4

structure level).

OBJECT 001

 DISTRIBUTION BOARD 001

 CIRCUIT 001  CIRCUIT 002

...

 CIRCUIT 199  EARTH ELECTRODE  BONDING Water

 BONDING Oil  BONDING Lightning  BONDING Gas  BONDING Structural Steel  BONDING Other  BONDING Earthing conductor

 CONNECTION 001

…

 CONNECTION 199

 DISTRIBUTION BOARD 002

 CIRCUIT 001  CIRCUIT 002

...

 CIRCUIT 199  EARTH ELECTRODE  BONDING Water

 BONDING Oil  BONDING Lightning  BONDING Gas  BONDING Structural Steel  BONDING Other  BONDING Earthing conductor

 CONNECTION 001

…

 CONNECTION 199

 DISTRIBUTION BOARD 199

 CIRCUIT 001  CIRCUIT 002

...

 CIRCUIT 199  EARTH ELECTRODE  BONDING Water

 BONDING Oil  BONDING Lightning

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.). If the results are stored in appropriate memory locations an automatic creation of a certificate/ report is possible.

Display organization

The installation structure field describes the location of the measurement (which object, board, circuit, connection). In the measurement field there is information about type and number of measurements that belong to the selected structure element (object and block and circuit and connection). The main advantages of this system are:

 Test results can be organized and grouped in a structured manner that reflects the

structure of the electrical installation.

 Customized names of data structure elements can be uploaded from EurolinkPRO

PCSW.

 Simple browsing through the structure and results.  Test certificates/ reports can be created with no or little modifications after

downloading results to a PC.

Figure 8.2: Installation structure and measurement fields

Installation structure elements

Memory operation menu

Data structure field

 1

level:

OBJECT: Default location name (object and its

successive number).

 2

level:

MI 3108 EurotestPV Data handling

D.BOARD: Default location name (distribution board and its successive number).

 3

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).

 4

level:

CONNECTION: Default location name (connection and

its successive number). 003: No. of selected element.

No. of measurements in selected location [No. of measurements in selected location and its sublocations]

Measurement field

No. of selected test result / No. of all stored test results in selected location.

Type of stored measurement in the selected location.

8.3 Storing test results

After the completion of a test the results and parameters are ready for storing ( icon is displayed in the information field). By pressing the MEM key, the user can store the results.

Figure 8.3: Save test menu

Memory space available for storing results.

Keys in save test menu - installation structure field:

TAB

Selects the location element (Object / D. Board / Circuit or Bonding or Electrode/ Connection)

UP / DOWN

Selects the location element in selected level.

MEM

Saves test results to the selected location and returns to the measuring menu.

Function selector / TEST

Exits back to main function menu.

Notes:

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.

Figure 8.4: Recall menu - installation

structure field selected

Figure 8.5: Recall menu - measurements

field selected

Keys in recall memory menu (installation structure field):

TAB

Selects the location element (Object / D. Board / Circuit or Bonding or Electrode / Connection).

UP / DOWN

Selects the location element in selected level.

Function selector / ESC

Exits back to main function menu.

TEST

Enters measurements field.

Keys in recall memory menu (measurements field):

UP / DOWN

Selects the stored measurement.

TAB / ESC

Returns to installation structure field.

Function selector

Exits back to main function menu.

TEST

View selected measurement results.

Figure 8.6: Example of recalled measurement result

Keys in recall memory menu (measurement results are displayed)

UP / DOWN

Displays measurement results stored in selected location

HELP

Toggle between multiple result screens.

MI 3108 EurotestPV Data handling

MEM / ESC

Returns to measurements field.

Function selector / TEST

Exits back to main function menu.

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.

Figure 8.7: Clear all memory

Keys in clear all memory menu

TEST

Confirms clearing of complete memory content. (YES must be selected with / keys).

Function selectors

Exits back to main function menu without changes.

Figure 8.8: Clearing memory in progress

8.5.2 Clearing measurement(s) in selected location and its sub-

locations

Select DELETE RESULTS in MEMORY menu.

MI 3108 EurotestPV Data handling

Figure 8.9: Clear measurements menu (data structure field selected)

Keys in delete results menu (installation structure field selected):

TAB

Selects the location element (Object / D. Board / Circuit or Bonding or Electrode / Connection).

UP / DOWN

Selects the location element in selected level.

Function selector

Exits back to main function menu.

ESC

Exits back to memory menu.

TEST

Enters dialog box for deleting all measurements in selected location and its sub-locations.

Keys in dialog box for clearing results in selected location and its sub-locations:

TEST

Deletes all results in selected location/ sub-location(s)

MEM / ESC

Exits back to installation structure field menu without changes.

Function selector

Exits back to main function menu without changes.

8.5.3 Clearing individual measurements

Select DELETE RESULTS in MEMORY menu.

Figure 8.10: Menu for clearing individual measurement (installation structure field

selected)

Keys in delete results menu (installation structure field selected):

TAB

Selects the location element (Object / D. Board / Circuit or Bonding or Electrode/ Connection).

UP / DOWN

Selects the location element in selected level.

Function selector

Exits back to main function menu.

ESC

Exits back to memory menu.

MEM

Enters measurements field.

Keys in delete results menu (measurements field selected):

TAB / ESC

Returns to installation structure field.

UP / DOWN

Selects measurement.

TEST

Opens dialog box for confirmation to clear selected measurement.

Function selector

Exits back to main function menu without changes.

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

8.5.4 Renaming installation structure elements (upload from PC)

Default installation structure elements are ‘Object’, ‘D.Board’, ‘Circuit’, ‘Electrode’ ‘Circuit’ and ‘Connection’. In the PCSW package EurolinkPRO default names can be changed

with customized names that corresponds the installation under test. Refer to PCSW EurolinkPRO HELP for information how to upload customized installation names to the instrument.

Figure 8.13: Example of menu with customized installation structure names

8.5.5 Renaming installation structure elements with serial barcode

reader or RFID reader

Default installation structure elements are ‘Object’, ‘D.Board’, ‘Earth Electr.’ and

‘Connection’. When the instrument is in the Save results menu location ID can be scanned

from a barcode label with the barcode reader or can be read from a RFID tag with the RFID reader.

MI 3108 EurotestPV Data handling

Figure 8.14: Connection of the barcode reader and RFID reader

How to change the name of memory location

 Connect the barcode reader or RFID reader to the instrument.  Make sure that RS232 is selected in Communication menu.  In Save menu select memory location to be renamed.  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.

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. USB interface has priority.

Figure 8.15: Interface connection for data transfer over PC COM port

How to configure a USB link between instrument and PC

 Connect a PC USB port to the instrument USB connector using the USB interface

cable.

 Switch on the PC and the instrument.  Run the EurolinkPRO program.  The PC and the instrument will automatically recognize each other.  The instrument is prepared to communicate with the PC.

How to configure a RS232 link between instrument and PC

 Connect a PC COM port to the instrument PS/2 connector using the PS/2 -

RS232 serial communication cable;

 Switch on the PC and the instrument.  Set communication settings to RS232.  Run the EurolinkPRO program.  Set COM port and baud rate.  The instrument is prepared to communicate with the PC.

The program EurolinkPRO is a PC software running on Windows XP, Windows Vista, Windows 7, Windows 8, and Windows 10. Read the file README_EuroLink.txt on CD for instructions about installing and running the program.

Notes:

 USB drivers should be installed on PC before using the USB interface. Refer to

USB installation instructions available on installation CD.

 The RS232 port supports other services too (for example upgrading the

instrument, connections of sensors, adapters, etc.

MI 3108 EurotestPV Data handling

Bluetooth communication

How to configure a Bluetooth link between instrument and PC

For Bluetooth communication with PC a Standard Serial Port over Bluetooth link for Bluetooth dongle A 1436 must be configured first.

 Switch Off and On the instrument.  Be sure that the Bluetooth dongle A 1436 is properly initialized. If not the

Bluetooth dongle must be initialized as described in chapter 4.4.7 Communication.

 On PC configure a Standard Serial Port to enable communication over Bluetooth

link between instrument and PC. Usually no code for pairing the devices is needed.

 Run the EurolinkPRO program.  The PC and the instrument will automatically recognize each other.  The instrument is prepared to communicate with the PC.

How to configure a Bluetooth link between instrument and Android device

 Switch Off and On the instrument.  Be sure that the Bluetooth dongle A 1436 is properly initialized. If not the

Bluetooth dongle must be initialized as described in chapter 4.4.7 Communication.

 Some Android applications automatically carry out the setup of a Bluetooth

connection. It is preferred to use this option if it exists. This option is supported by Metrel's Android applications.

 If this option is not supported by the selected Android application then configure

a Bluetooth link via Android device’s Bluetooth configuration tool. Usually no code for pairing the devices is needed.

 The instrument and Android device are ready to communicate.

How to configure a Bluetooth link between EurotestPV instrument and Metrel Powermeter

 Switch Off and On the EurotestPV instrument.  Be sure that the EurotestPV Bluetooth dongle A 1436 is connected and properly

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

PowerQ device). If not, the Bluetooth dongle must be initialized as described in chapter 4.4.7 Communication.

 The settings in instrument’s Communication menu (see chapter 4.4.7

Communication) should be as following:

COM PORT: BT DONGLE BLUETOOTH DEVICES: PowerQ

 The EurotestPV instrument and Powermeter are ready to communicate.

MI 3108 EurotestPV Data handling

100

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

type plus serial number, eg. MI 3108-12240429D. If the Bluetooth dongle got another name, the configuration must be repeated.

METREL Eutrotest PB, MI 3108 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual