METREL MI 3101 EurotestAT, MI 3101, EurotestAT Instruction Manual
EurotestAT
MI 3101
Instruction manual
Version 5.0, HW 5; Code no. 20 751 834
2
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
© 2005..2010 METREL
No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.
MI 3101 EurotestAT Table of contents
3
1 Preface ..................................................................................................................................... 6
2 Safety and operational considerations ................................................................................. 7
2.1 Warnings a
nd notes .......................................................................................................... 7
2.2 Battery and
charging ....................................................................................................... 10
2.2.1 New battery cells or
cells unused for a longer period.............................................. 11
2.3 Standards applied
........................................................................................................... 12
3 Instrument description
......................................................................................................... 13
3.1 Front panel
...................................................................................................................... 13
3.2 Connector panel
.............................................................................................................. 14
3.3 Back panel....................................................................................................................... 15
3.4 Bottom
............................................................................................................................. 16
3.5 Display organization
........................................................................................................ 17
3.5.1 Term
inal voltage monitor......................................................................................... 17
3.5.2 Menu line
.................................................................................................................18
3.5.3 Message fie
ld .......................................................................................................... 18
3.5.4 Result field
............................................................................................................... 19
3.5.5 Other m
essages......................................................................................................19
3.5.6 Sound warnings
....................................................................................................... 19
3.5.7 Help
.........................................................................................................................19
3.5.8 Backlight an
d contrast adjustments......................................................................... 20
3.6 Carrying the
instrument................................................................................................... 21
3.7 Instrument set and acce
ssories....................................................................................... 21
3.7.1 Standard set
............................................................................................................ 21
3.7.2 Optional accessories
............................................................................................... 21
4 Instrument operation
............................................................................................................ 22
4.1 Main menu
....................................................................................................................... 22
4.2 Single test
........................................................................................................................ 23
4.3 Automatic testing
............................................................................................................. 24
4.3.1 Auto sequence num
ber main menu ........................................................................ 26
4.3.2 Auto sequence set
...................................................................................................26
4.3.3 Test parameters in auto
sequence.......................................................................... 27
4.3.4 Na
me and description of auto sequence................................................................. 28
4.3.5 Storing auto sequence settings (seq
uence, number, name)................................... 29
4.3.6 Pause flag a
nd comments in auto sequence........................................................... 30
4.3.7 Setting pause flag and co
mments...........................................................................30
4.3.8 Building an
auto sequence......................................................................................32
4.4 Miscellaneo
us.................................................................................................................. 37
4.4.1 Language
................................................................................................................ 37
4.4.2 Supply syste
m, Isc factor, RCD standard................................................................ 38
4.4.3 Me
mory ...................................................................................................................40
4.4.4 Date and time
..........................................................................................................40
4.4.5 Initial se
ttings........................................................................................................... 40
4.4.6 Co
mmunication port ................................................................................................ 43
4.4.7 Locator
.................................................................................................................... 43
4.4.8 Operator
..................................................................................................................43
5 Measureme
nts ....................................................................................................................... 45
5.1 Insulation re
sistance........................................................................................................ 45
5.2 Resistance t
o earth connection and equipotential bonding............................................. 47
5.2.1 Continuity
R200 mA measurement..........................................................................47
5.2.2 7
mA resistance measurement................................................................................ 49
5.2.3 Co
mpensation of test leads resistance....................................................................50
5.3 Testing RCDs
.................................................................................................................. 52
MI 3101 EurotestAT Table of contents
4
5.3.1 Contact voltage (RCD Uc)....................................................................................... 53
5.3.2 Trip-out time (RCD t)...............................................................................................54
5.3.3 Trip-out current (RCD I
) ......................................................................................... 55
5.3.4 RCD Autotest ..........................................................................................................56
5.4 Fault loop impedance and prospective fault current
........................................................ 58
5.5 Line impedance / prospe
ctive short-circuit current and Voltage drop ............................. 60
5.5.1 Line im
pedance and prospective short circuit current.............................................61
5.5.2 Voltage drop
............................................................................................................ 62
5.6 Voltage, frequency and phase sequ
ence........................................................................ 64
5.7 Resistance t
o earth ......................................................................................................... 66
5.7.1 Standard 3-wire
measurement................................................................................66
5.7.2 Specific eart
h resistance measurement .................................................................. 68
5.8 2 line/loo
p impedance.................................................................................................. 69
5.9 PE test terminal
............................................................................................................... 72
5.10 Locator
............................................................................................................................ 73
5.11 Varistor test
..................................................................................................................... 75
6 Data handling
........................................................................................................................ 77
6.1 Memory org
anization....................................................................................................... 77
6.2 Installation data
structure ................................................................................................ 77
6.3 Storing test
results........................................................................................................... 80
6.3.1 Saving results specialtie
s........................................................................................80
6.4 Recalling te
st results and parameters............................................................................. 81
6.4.1 Recalling re
sult........................................................................................................ 81
6.5 Clearing saved data
........................................................................................................ 83
6.5.1 Clearing sp
ecialties................................................................................................. 84
6.6 Editing insta
llation data structure .................................................................................... 85
6.6.1 Adding new locations
.............................................................................................. 85
6.7 Communication
............................................................................................................... 87
6.8 Operation with barcode
scanner ..................................................................................... 88
7 Maintenance
.......................................................................................................................... 89
7.1 Replacing fu
ses............................................................................................................... 89
7.2 Cleaning
.......................................................................................................................... 89
7.3 Periodic calibration
.......................................................................................................... 89
7.4 Service
............................................................................................................................ 89
8 Technical specifications
....................................................................................................... 90
8.1 Insulation re
sistance........................................................................................................ 90
8.2 Continuity
........................................................................................................................ 91
8.2.1 Resistance
R200mA (LPE, NPE)............................................................................ 91
8.2.2 Resistance
R7mA (LPE, NPE)................................................................................ 91
8.3 RCD testing
..................................................................................................................... 91
8.3.1 General data
............................................................................................................91
8.3.2 Contact voltage RCD-Uc
......................................................................................... 92
8.3.3 Trip-out time
............................................................................................................92
8.3.4 Trip-out curr
ent........................................................................................................ 93
8.4 Fault loop impedance and prospective fault current
........................................................ 93
8.4.1 No disconne
cting device or FUSE selected ............................................................ 93
8.4.2 RCD selected
.......................................................................................................... 94
8.5 Line impedance / prospe
ctive short-circuit current and Voltage drop ............................. 94
8.6 Voltage, frequency, and phase rotation
........................................................................... 95
8.6.1 Phase rotation
.........................................................................................................95
8.6.2 Voltage
....................................................................................................................95
8.6.3 Frequency
............................................................................................................... 95
8.7 Online terminal voltage monitor
....................................................................................... 95
MI 3101 EurotestAT Table of contents
5
8.8 Earth resistance .............................................................................................................. 95
8.9 2 line/loop impedance.................................................................................................. 96
8.9.1 High precision line im
pedance ................................................................................96
8.9.2 High precision fault loop
impedance .......................................................................97
8.9.3 Contact volt
age .......................................................................................................98
8.10 Varistor test
..................................................................................................................... 98
8.11 General data.................................................................................................................... 99
A Appendix A - Fuse table
..................................................................................................... 100
B Appendix B - Accessories for specific measurements
................................................... 103
C Appendix C – Locator receiver R10K
................................................................................ 104
C.1 Tracing prin
ciples .......................................................................................................... 105
C.1.1 Positioning t
he receiver.........................................................................................105
C.1.2 Positioning current
clamp......................................................................................105
C.1.3 Positioning selective
probe.................................................................................... 106
C.2 Detection distances for
different connections................................................................ 106
C.3 R10K power supply
....................................................................................................... 106
C.4 Maintenance
.................................................................................................................. 106
D Appendix D - IT suppl
y systems........................................................................................ 107
D.1 Standard references
...................................................................................................... 107
D.2 Fundamentals................................................................................................................ 107
D.3 Measureme
nt guides..................................................................................................... 108
D.3.1 MI 3101 test functions a
nd IT systems.................................................................. 109
E Appendix E - Reduced low voltage
supply systems ....................................................... 110
E.1 Standard reference........................................................................................................ 110
E.2 Fundamentals................................................................................................................ 110
E.3 MI 3101 guides
.............................................................................................................. 110
E.3.1 MI 3101 functions and r
educed low voltage systems............................................ 111
E.4 Technical specificat
ions ................................................................................................ 113
E.4.1 RCD
.......................................................................................................................113
E.4.2 Fault loop impedance and prospective short-cir
cuit current.................................. 115
E.4.3 Line im
pedance and prospective short-circuit current........................................... 117
F Appendix F – Country
notes .............................................................................................. 118
F.1 List of count
ry modifications.......................................................................................... 118
F.2 Modification
issues........................................................................................................ 118
F.2.1 AT
modification - G type RCD...............................................................................118
F.2.2 ES
modification - CONTINUITY LOOP Re............................................................ 119
F.2.3 IT
modification - CONTINUITY LOOP Re ............................................................. 121
F.2.4 CH
modification - Change L/N............................................................................... 123
G Appendix G – ES1; ap
plication of regulative UNE-202008.............................................. 124
G.1 Main menu
..................................................................................................................... 124
G.1.1 Inspection
..............................................................................................................124
G.2 Miscellaneo
us................................................................................................................ 125
G.2.1 Operation mode
.....................................................................................................125
G.3 Measureme
nts............................................................................................................... 125
G.3.1 Inspection
s............................................................................................................ 126
G.3.2 Resistance t
o earth connection and equipotential bonding................................... 127
G.3.3 Fault loop impedance and prospective fault curr
ent.............................................. 130
G.3.4 Line im
pedance and prospective short-circuit current........................................... 132
H Appendix H – DK modifications
......................................................................................... 134
H.1 Fault loop impedance and prospective fault current
...................................................... 134
MI 3101 EurotestAT Preface
6
1 Preface
Congratulations on your purchase of the instrument and its accessories from METREL.
The instrument was designed on basis of rich experience, acquired through many years of
dealing with electric installation test equipment.
The multifunctional hand-held installation tester EurotestAT is intended for all tests and
measurements required for total inspection of electrical installations in buildings. In general
the following measurements and tests can be performed:
True rms voltage and frequency, phase sequence,
Insulation resistance,
Resistance to earth connection and equipotential bonding plus continuous
resistance measurement,
Line impedance / Voltage drop,
Loop impedance,
2 line/loop impedance
RCD protection,
Resistance to earth,
Tracing the installation,
Overvoltage protection devices,
Specific earth resistance measurement.
Tests can be performed on the following supply systems:
TN / TT,
IT,
110 V reduced low voltage (2 x 55 V), and
110 V reduced low voltage (3 x 63 V).
The high-resolution graphic display with backlight offers easy reading of results,
indications, measurement parameters and messages. Operation is simple and clear –
operator does not need any special training (except reading this instruction manual) to
operate the instrument.
In order for operator to be familiar enough with measurements in general and their typical
applications it is advisable to read Metrel handbook Measurements on electric installations
in theory and practice.
The instrument is equipped with all accessories necessary for comfortable testing. It is
kept in a soft carrying bag together with all accessories.
MI 3101 EurotestAT: Safety and operational considerations Warnings and notes
7
2 Safety and operational considerations
2.1 Warnings and notes
In order to reach high level of operator’s safety while carrying out various tests and
measurements using EurotestAT, as well as to keep the test equipment undamaged, it is
necessary to consider the following general warnings:
Warning on the instrument means »Read the Instruction manual with
special care to safety 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 might be impaired!
Read this user manual carefully, otherwise use of the instrument may be
dangerous for the operator, for the instrument or for the equipment under test!
Do not use the instrument and accessories if any damage is noticed!
In case a fuse has blown follow the instructions in this manual to replace it!
Consider all generally known precautions in order to avoid risk of electric
shock while dealing with hazardous voltages!
Do not use the instrument in supply systems with voltages higher than
550 V!
Service intervention or adjustment and calibration procedure is allowed to be
carried out only by a competent authorized person!
Use only standard or optional test accessories supplied by your distributor!
Consider that older and some of new optional test accessories compatible with
this instrument meet overvoltage category CAT III / 300 V! It means that
maximum allowed voltage between test terminals and ground is 300 V!
Instrument contains rechargeable NiCd or NiMh battery cells. The cells should
only be replaced with the same type as defined on the battery placement label
or in this manual. Do not use standard alkaline battery cells while power supply
adapter is connected, otherwise they may explode!
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.
All normal safety precautions have to be taken in order to avoid risk of electric
shock when working on electrical installations!
Warnings related to measurement functions:
Insulation resistance
Do not touch the test object during the measurement or before it is fully
discharged! Risk of electric shock!
Automatic discharge of capacitive object will take some time after the finished
insulation resistance measurement. Warning message
and actual voltage is
displayed during discharging until voltage drops below 10 V. In no case you
should disconnect test leads until tested object is completely discharged!
MI 3101 EurotestAT: Safety and operational considerations Warnings and notes
8
Notes related to measurement functions:
General
Indicator means that the selected measurement can't be performed because of
irregular conditions on input terminals.
Insulation resistance, varistor test, continuity functions and earth resistance
measurements shall be performed on de-energized objects, i.e. voltage between
test terminals should be lower than 10 V!
PASS / FAIL indication is enabled when limit is set to ON. Apply appropriate limit
value for evaluation of measurement results.
In case that only two of three wires are connected to test electrical installation, only
voltage indication between these two wires is valid.
Insulation resistance
When measuring insulation resistance between installation conductors all loads
must be disconnected and all switches closed!
The instrument automatically discharge tested object after finished measurement.
Keep the TEST key pressed for continuous measurement.
Continuity functions
Parallel resistance paths and interfering currents in measured circuit will influence
the test result!
If necessary compensate test lead resistance before performing continuity
measurement, see 5.2.3.
Measuring the resistance of wire wound components like transformer or motor
windings is possible only in continuous function (R7mA) due to great influence of
the winding inductance.
RCD functions
Parameters set in one function are also kept for other RCD functions.
The measurement of contact voltage will not trip-out RCD of tested installation if
selected rated test current is the same as rated I
N
of observed RCD. However, the
RCD trip-out may occur and Uc measurement is affected as a result of PE leakage
currents caused by appliances that are connected to the tested installation.
The RCD trip-out current test and Uc measurement could be affected as a result of
potential fields of other earthing installations.
RCD trip-out current and time will be measured only if pretest of those functions
gives contact voltage lower than the selected conventional limit contact voltage.
L and N test terminals are reversed automatically according to detected terminal
voltage.
In case the RCD trips-out during safety pretests it is possible to continue
measurements just by recovering the RCD. Possible reasons for trip-out are
incorrect RCD sensitivity (IN) selected, relatively high leakage currents in tested
installations or defective RCD.
MI 3101 EurotestAT: Safety and operational considerations Warnings and notes
9
Z-LOOP
Fault loop impedance measurement (protection: FUSE or no protection ---) trips-out
the RCD. Use the Z-LOOP Impedance, Protection: RCD option to prevent the tripout.
Fault loop impedance function with selected RCD protection takes longer time to
complete but offers much better accuracy then RL sub-result in RCD: Uc function.
Specified accuracy of tested parameters is valid only if mains voltage is stable
during the measurement and no additional operating circuits are connected in
parallel.
L and N test terminals are reversed automatically according to detected terminal
voltage.
Z-LINE / Voltage drop
Measurement of Z
Line-Line
with the instrument test leads PE and N connected
together will generate warning of dangerous PE voltage when the TEST key is
touched but measurement is not prohibited.
Specified accuracy of tested parameters is valid only if mains voltage is stable
during the measurement and no additional operating circuits are connected in
parallel.
L and N test terminals are reversed automatically according to detected terminal
voltage.
Earth resistance
High currents and voltages in earthing could influence the measurement results.
High resistance of S and H probes could influence the measurement results. In this
case, indications Rp and Rc appear in the message field. There is no pass / fail
indication in this case.
Resistance of E measuring wire is added to the measurement result of resistance to
earth. Use only standard test accessory without extension lead for E probe.
Line tracer
Receiver R10K should always be in IND mode when working with the MI 3101
instrument.
When dealing with complex installations (long conductors or more current loops
connected in parallel), it is advisable to disconnect parts of the installation that are
not of interest at that moment. Otherwise the test signal will spread all over the
installation and the selectivity can fall to an unacceptable level.
MI 3101 EurotestAT: Safety and operational considerations Battery and charging
10
2.2 Battery and charging
The instrument uses six AA size alkaline or rechargeable Ni-Cd or Ni-MH battery cells.
Nominal operating time is declared for cells with nominal capacity of 2100 mAh.
Battery condition is always present on the display when the instrument is turned on.
In case the battery is weak the instrument indicates this as shown in figure 2.1. This
indication appears for a few seconds and then the instrument is turned off.
Figure 2.1: Discharged battery indication
The battery is charged whenever the power supply adapter is connected to the instrument.
Internal circuit controls charging assuring maximum battery lifetime. Power supply socket
polarity is shown in figure 2.2.
+
-
Figure 2.2: Power supply socket polarity
The instrument automatically recognizes connected power supply adapter and controls
charging.
Symbols:
Indication of battery charging
7.2 Battery voltage
7.2
Figure 2.3: Charging indication
Before opening battery / fuse compartment cover disconnect all measuring
accessories connected to the instrument and power off the instrument.
Insert cells correctly, otherwise the instrument will not operate and the batteries
could be discharged.
If the instrument is not used for longer period remove all battery cells from the
battery compartment.
Do not charge alkaline battery cells!
MI 3101 EurotestAT: Safety and operational considerations Battery and charging
11
Take into account handling, maintenance and recycling requirements that are
defined by related regulatives and manufacturer of alkaline or rechargeable
batteries!
Use only power supply adapter delivered from manufacturer or distributor of the test
equipment to avoid possible fire or electric shock!
2.2.1 New battery cells or cells unused for a longer period
Unpredictable chemical processes can occur during charging of new battery cells or cells
that were unused for a longer period (more than 3 months). Ni-MH and Ni-Cd battery cells
are affected to capacity degradation (sometimes called as memory effect). As a result the
instrument operation time can be significantly reduced.
Recommended procedure for recovering battery cells:
Procedure Notes
Completely charge the battery.
At least 14h with in-built charger.
Completely discharge the battery.
Can be performed with normal work with the
instrument.
Repeat the charge / discharge cycle for
at least two times.
Four cycles are recommended.
Complete discharge / charge cycle is performed automatically for each cell using external
intelligent battery charger.
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).
One different battery cell can cause an improper charging and incorrect discharging
during normal usage of the entire battery pack (it results in heating of the battery
pack, significantly decreased operation time, reversed polarity of defective cell,…).
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.
The effects described above should not be mixed with normal decrease of battery
capacity over time. Battery also loses some capacity when it is repeatedly charged /
discharged. The actual decrease of capacity versus number of charging cycles
depends on battery type and is provided in the technical specification from battery
manufacturer.
MI 3101 EurotestAT: Safety and operational considerations Standards applied
12
2.3 Standards applied
The MI 3101 EurotestAT instrument is manufactured and tested according to the following
regulations, listed below.
Electromagnetic compatibility (EMC)
EN 61326
Electrical equipment for measurement, control and laboratory use –
EMC requirements
Class B (Hand held equipment used in controlled EM environments)
Safety (LVD)
EN 61010 - 1
Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 1: General requirements
EN 61010 - 031
Safety requirements for hand-held probe assemblies for electrical
measurement and test
Functionality
EN 61557
Electrical safety in low voltage distribution systems up to 1000 V a.c. and
1500 V d.c. - 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
Other reference standards for testing RCDs
EN 61008
Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses
EN 61009
Residual current operated circuit-breakers with integral overcurrent
protection for household and similar uses
EN 60755 General requirements for residual current operated protective devices
EN 60364-4-41
Low-voltage electrical installations - Part 4-41: Protection for safety Protection against electric shock
EN 60364-5-52
Low-voltage electrical installations - Part 5-52: Selection and erection of
electrical equipment - Wiring systems
IEC 62423
Type F and type B residual current operated circuit-breakers with and
without integral overcurrent protection for household and similar use
BS 7671 IEE Wiring Regulations
AS / NZ 3760 In-service safety inspection and testing of electrical equipment
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 3101 EurotestAT: Instrument description Front panel
13
3 Instrument description
3.1 Front panel
Figure 3.1: Front panel
Legend:
Switches the instrument power on or off.
1 ON / OFF
The instrument automatically turns off 15 minutes after the last
key was pressed.
2 HELP Accesses help menus.
Adds new memory location.
3 F2
Confirmation of name entered in edit mode.
Enters memory editing mode.
4 F1
Deletes character on the left in edit mode.
5 MEM Handling with memory.
6 ESC Exits selected and displayed option.
7 TAB Jumps between display windows.
Cursors Selection of tested function and its working parameters.
Initiates measurements.
8
Cursor keypad
with TEST key
TEST
Acts also as the PE touching electrode.
9
BACKLIGHT,
CONTRAST
Changes backlight level and contrast.
10 LCD 320 x 240 dots matrix display with backlight.
MI 3101 EurotestAT: Instrument description Connector panel
14
3.2 Connector panel
1
3
2
> 550V
4
5
Figure 3.2: Connector panel
Legend:
1 Test connector Measuring inputs / outputs, connection of measuring cables.
2 Charger socket Connection of power supply adapter.
3 PS/2 connector
Communication with PC serial port and connection to optional
measuring adapters.
4 Protection cover
Protects from simultaneous access to test connector and power
supply adapter socket plus communication connectors.
5 USB connector Communication with PC USB (1.1) port.
Warnings!
Maximum allowed voltage between any test terminal and ground is 600 V!
Maximum allowed voltage between test terminals is 550 V!
Maximum short-term voltage of external power supply adapter is 14 V!
MI 3101 EurotestAT: Instrument description Back panel
15
3.3 Back panel
1
2
3
Figure 3.3: Back panel
Legend:
1 Battery / fuse compartment cover
2 Back panel information label
3 Fixing screws for battery / fuse compartment cover
5
6
4
1
2
3
F1
F3
F2
Fuse
Fuse
Fuse
SIZE AASIZE AA
SIZE AA
SIZE AASIZE AASIZE AA
S/N XXXXXXXX
Figure 3.4: Battery and fuse compartment
Legend:
1 Fuse F1 T 315 mA / 250 V
2 Fuse F2 T 4 A / 500 V
3 Fuse F3 T 4 A / 500 V
4 Serial number label
5 Battery cells Size AA, alkaline / rechargeable NiMH or NiCd
6 Battery holder Can be removed from the instrument
MI 3101 EurotestAT: Instrument description Bottom
16
3.4 Bottom
3
1
2
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 1200V
Nominal voltages: 100V , 250V , 500V , 1kV
Measuring current: min. 1mA at R =U 1k /V
Short-circuit current: < 3mA
N
N
NN
Insulation resistance (EN 61557-2)
V250V
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
C
Tripping curre nt
I : 0.2 I 1.1 I AC (
t : 0ms 300ms, U : 0.0V 100.0V
C
NN N
1.5 I A)
Multiplier: 0.5, 1, 2, 5
Cont act v oltag e
U : 0.0V 100.0V
R : 0.0 0 10.0 0k (R =U / I )
C
SSCN
R : 0. 1999 I : 0. A . kA
L-N(L) PSC
17 20 1 4
Nominal voltage: 100V 440V/ 15Hz 500Hz
Line impedance(EN 61557-3)
Fault loop (EN 61557-3)
R : 0. 1999
I : 0. A .kA
PFC
14 14
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 83 2
CAT III 600V
550V
Figure 3.5: Bottom
Legend:
1 Bottom information label
2 Neck belt openings
3 Handling side covers
MI 3101 EurotestAT: Instrument description Display organization
17
3.5 Display organization
Figure 3.6: Typical single test
display
Menu line
Result field
Test parameter
field
Message field
Terminal voltage
monitor
Function tabs
3.5.1 Terminal voltage monitor
The terminal voltage monitor displays current voltages present on the test terminals. In its
lower part messages are displayed regarding the measured voltages and selected voltage
system (see 4.4.2 Supply system).
Online voltage is displayed together with test terminal indication.
L and N test terminals are used for selected measurement.
L and PE are test terminals; N terminal should also be connected for
reference in measuring circuit.
Polarity of test voltage applied to the output terminals.
Insulation test: two measuring terminals should be shorted.
,
Three-phase connection indicator.
TT / TN supply system.
IT supply system.
Reduced low voltage supply system.
Unknown supply system (atypical voltage at input terminals for selected
supply system).
L – N polarity changed.
First fault in IT supply system.
Check monitored voltages to fix the problem.
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Warning! Phase voltage on the PE terminal! Stop the activity immediately
and eliminate the fault / connection problem before proceeding with any
activity!
3.5.2 Menu line
In the menu line the name of the selected function is displayed. Additional informations
about active cursor / TEST keys and battery condition are shown.
Function name.
Time.
Active keys on cursor / TEST keypad ( and TEST in this
example).
Battery capacity indication.
Low battery.
Battery is too weak to guarantee correct result. Replace or
recharge the battery cells.
Recharging in progress (if power supply adapter is connected).
3.5.3 Message field
In the message field different warnings and messages are displayed.
Warning! High voltage is applied to the test terminals.
Measurement is running, consider displayed warnings.
Conditions on the input terminals allow starting the measurement (TEST
key), consider other displayed warnings and messages.
Conditions on the input terminals do not allow starting the measurement
(TEST key), consider displayed warnings and messages.
Test leads resistance in CONTINUITY tests is not compensated, see
Chapter 5.2.3 for compensation procedure.
Test leads resistance in CONTINUITY tests is compensated.
Possibility to perform reference measurement (Zref) in ΔU sub-function.
RCD tripped-out during the measurement (in RCD functions).
Instrument is overheated, the temperature inside the instrument is higher
than the safety limit, and measurement is prohibited until the temperature
decreases under the allowed limit.
Fuse F1 has blown or not inserted (CONTINUITY and EARTH functions).
It is possible to store result(s).
High electrical noise during measurement. Results may be impaired.
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Probe resistances Rc or Rp could influence earth resistance result.
Pause activated in auto sequence test. Follow required activity for paused
test function.
3.5.4 Result field
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.
3.5.5 Other messages
Hard Reset
Instrument settings and measurement parameters/limits are set to
initial (factory) values, for more information refer to chapter 4.8.5.
Recalling original settings.
CAL ERROR!
Service intervention required.
3.5.6 Sound warnings
Periodic sound
Warning! Dangerous voltage on the PE terminal is detected.
Refer to chapter 5.8 for more information.
3.5.7 Help
Key:
HELP
Opens help screen.
The help menu contains some basic schematic / connection diagrams to illustrate
recommended connection of the instrument to the electrical installation and information
about the instrument.
Pressing the HELP key in single test generates help screen for selected single test
function, while in other working menus the voltage system help is displayed first.
Keys in help menu:
/ Select neighbour help screen.
HELP
Rotates through help screens.
ESC
Exits help menu.
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Figure 3.7: Examples of help screen
3.5.8 Backlight and contrast adjustments
With the BACKLIGHT key backlight and contrast can be adjusted.
Click
Toggle backlight intensity level.
Keep pressed for 1 s
Lock 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 3.8: Contrast adjustment menu
Keys for contrast adjustment:
Reduces contrast.
Increases contrast.
TEST
Accepts new contrast.
ESC
Exits without changes.
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3.6 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.
The instrument can be used even when placed in soft
carrying bag – test cable connected to the instrument
through the front aperture.
3.7 Instrument set and accessories
3.7.1 Standard set
Instrument
Soft carrying bag
Short instruction manual
Product verification data
Warranty declaration
Declaration of conformity
Universal test cable
Three test tips
Schuko plug commander
Three alligator clips
Power supply adapter
CD with instruction manual,
handbook Measurements on
electric installations in theory and
practice, PC software
USB interface cable
RS232 interface cable
3.7.2 Optional accessories
See the attached sheet for a list of optional accessories that are available on request from
your distributor.
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4 Instrument operation
4.1 Main menu
From the Main menu different instrument operation modes can be set.
Single test menu (see 4.2),
Auto sequence menu (see 4.3),
Miscellaneous (see 4.4).
Figure 4.1: Main menu
Keys:
/ Select the mode.
TEST
Enters selected mode.
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4.2 Single test
is intended to run individual test /
measurement functions.
Figure 4.2: Example of typical
Single test screen
Keys in main single test screen:
/
Select test / measurement function:
<VOLTAGE> Voltage and frequency plus phase sequence.
<INSULATION> Insulation resistance.
<CONTINUITY> Resistance to earth connection and equipotential
bonding.
<Z-LINE> Line impedance.
<Z-LOOP> Fault loop impedance.
<RCD> RCD testing.
<EARTH> Resistance to earth.
<VARISTOR TEST> Transient suppressor test.
/
Select sub-function in selected measurement function.
TEST
Runs selected test / measurement function.
TAB
Enters test parameters field.
ESC
Exits single test operation mode.
MEM
Stores measured results / recalls stored results.
Keys in test parameter field:
/ Select measuring parameter.
/
Change the selected parameter.
TEST, TAB, ESC
Exit back to main single test screen.
General rule for enabling limits for evaluation of measurement / test result:
OFF
No limit comparison
Limit ON – enabled comparison Limit
ON
Limit Value – minimum / maximum limit value *
* Type of limit value depends on particular function.
See Chapter 5 for more information about operation of the instrument in single test
functions.
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4.3 Automatic testing
is intended for automatic executing of predefined measurement sequences.
Figure 4.3: Typical auto
sequence screen
Auto sequence menu.
Selected sequence number
and (optional) name.
Sequence field.
Test parameter / auto
sequence description field.
Saving and renaming options.
Running auto sequence:
Select auto sequence (see 4.3.2).
Connect the instrument to tested object as required for the first measurement in the
sequence.
Press TEST key.
The sequence will pause at the functions marked with pause flag
II
.
Comments
regarding the paused function will be displayed (optional).
♦ Press the TAB key to toggle between comments menu and auto sequence main
menu.
♦ If the conditions at input terminals are valid, the test will proceed after pressing
the TEST key.
♦ Press the F1 key to skip the paused function. The test will continue with the
next test (if any) or will end.
♦ Press the ESC key to skip the remaining functions and finish the auto
sequence.
The set of measurements will be performed in sequential manner until the
conditions at input terminals are valid for each individual test. If not, the instrument
will stop (the buzzer sounds). The auto sequence will proceed:
♦ After correct conditions are restored at the input terminal (e.g. by reconnecting,
switching on the RCD).
♦ If pressing the F1 key this function will be skipped.
♦ By pressing the ESC key to skip the remaining functions and finish the auto
sequence.
Results of a finished auto sequence can be viewed and stored. See chapter 6. for
more information.
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Measurements are marked with one of the following symbol after finished test.
Measurement is finished and has failed.
Measurement is finished and has passed.
Measurement is finished. No comparison limit was applied.
Measurement is not performed yet (during test) or was skipped.
Overall PASS result is reported if all performed tests passed.
Overall FAIL result is reported if one or more performed tests failed.
Figure 4.4: Waiting for right input condition to proceed
Figure 4.5: Overall PASS example
Figure 4.6: Overall FAIL example
Viewing auto sequence particular results:
After finished auto sequence press the key to move focus into sequence field.
♦ Press TEST key.
♦ Result of selected function is displayed.
♦ Press the key (or ) to select the next function of the sequence.
♦ Repeat this part until all results are observed.
Viewing of the results is finished by pressing the key until selected sequence
number is focused or by pressing the ESC key.
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4.3.1 Auto sequence number main menu
In the instrument up to 99 automatic sequences can be stored.
#3 Auto sequence number.
* Indicator that the preset sequence was changed and is
not stored yet, the auto sequence can be performed
anyway.
TEST EXA1
Optional sequence name (see 4.3.4).
Indication of locked sequence (see 4.3.2).
4.3.2 Auto sequence set
Keys in main auto sequence menu:
TEST
Starts the selected test sequence.
Enters / clears pause II before test.
/ Select the test sequence number or measuring function (see 4.3.1).
/ Select individual sequence step / measuring function.
TAB
Enters test parameter field (see 4.3.3).
ESC
Exits auto sequence menu without changes.
F1
Enters editor to rename selected test sequence and enter its description (see
4.3.4).
Enters menu for
setting pause flag and comments (see 4.3.7).
F2
Saves entered test sequence (see 4.3.5).
MEM
Stores / recalls AUTO SEQUENCE results.
Function selection
Parameter selection
Figure 4.7: Example of setting auto sequence sequence
For each of 6 predefined sequence steps any of the following measurement function can
be selected: voltage, continuity, insulation, Zline, Zloop, RCD and earth. The field can also
be left empty (- - -).
Test parameters are applied to individual measurements as in the single test. The test
parameter menu of selected measurement is available on the right side of the display.
The pause
II
flag holds the auto sequence until prosecution is confirmed with the TEST
key. It is recommended to use it if additional checks or reconnections have to be
performed before performing the next measurement.
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The key is indication of locked sequence. This indication appears at predefined sequences
that were loaded into the instrument from PC. It is possible to modify locked auto
sequences and run them. However, the modified sequence cannot be stored by
overwriting.
Note:
It is recommended to save current auto sequence if modified or new prepared, to
keep it during manipulation.
4.3.3 Test parameters in auto sequence
Keys in test parameter menu (in auto sequence):
/ Select test parameter value or enable / disable parameter.
/ Select test parameter.
TEST, TAB, ESC
Return to auto sequence main screen.
Whenever a new function is selected for auto sequence its test parameters should be
verified and changed to appropriate values / states.
Test parameter merging
When the prepared sequence from section 4.3.2 contains selected at least two of Zline,
Zloop, or RCD, is possible to merge test parameters of one function to others of mentioned
in the same sequence.
Merged parameters are related to:
- fuse data, and
- RCD data, except start polarity of test current.
Additional Key in main auto sequence menu with selected Zline, Zloop, or RCD:
F2
Merges test parameters.
Figure 4.8: Parameter merging possibility
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4.3.4 Name and description of auto sequence
F1
Enters test sequence name menu from auto sequence main menu.
Name and description for the selected auto sequence
can be added or changed (optional) in this two level
menu.
Figure 4.9: Auto sequence name
menu
Keys for 1st level:
/ Select between name and description field.
TEST
Returns to auto sequence main menu.
F1
Enters editing of selected field (2nd level).
ESC
Returns to auto sequence main menu without changes.
Figure 4.10: Auto sequence name edit
menu
Figure 4.11: Auto sequence description edit
menu
Keys for 2
nd
level:
Highlighted key
Selected symbol or activity.
/ / / Select symbol or activity.
TEST
Enters selected symbol or performs selected activity.
F1
Deletes last entered symbol in the name line.
F2
Confirms name and returns to 1st level of auto sequence name
menu.
ESC
Returns to 1st level of auto sequence name menu without changes.
20 characters is the maximum length of the auto sequence name.
100 characters is the maximum length of the auto sequence description.
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4.3.5 Storing auto sequence settings (sequence, number, name)
F2
Opens dialog for storing auto sequence settings in auto sequence main menu.
The dialog enables storing existing auto sequence
settings into different location or overwriting existing.
Figure 4.12: Store dialog
Keys:
/
Select the auto sequence number.
TEST
Confirms the storing.
ESC
Returns to auto sequence main menu without changes.
Auto sequence settings are stored in nonvolatile memory. Stored auto sequence
procedures remain in memory until the user changes them.
It is not possible to store any auto sequence in locked location. Locked auto sequence can
be copied in an unlocked location. Stored sequence is unlocked in this case.
Figure 4.13: Store dialog for locked sequence
Figure 4.14: Failed storing
It is possible to unlock all locked sequences (see 4.4.5 for more information) if necessary.
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4.3.6 Pause flag and comments in auto sequence
The auto sequence holds if a pause flag is associated with the measurement and the predefined comment is displayed. When the input conditions are regular, the auto sequence
can be continued by pressing the TEST key.
Comment appears with the pause
Blinking pause flag in main screen
Figure 4.15: Examples of screens during the pause in auto sequence
Keys:
TAB
Toggles between comment screen and auto sequence main screen.
TEST
Continues with the paused test.
F1
Skip paused test.
ESC
Skip all tests and ends auto sequence.
4.3.7 Setting pause flag and comments
Operator of the instrument can prepare comments regarding the measurements.
Warnings, reconnection hints or other useful remarks related to the test sequence can be
applied this way.
F1
Enters pause set-up and comments menu for selected function in auto
sequence main menu.
Set-up of comments is enabled if pause flag is set to
ON.
Figure 4.16: Pause set-up menu
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