MultiservicerXA
MI 3321
Instruction Manual
Ver. 5.3.6, Code no. 20 751 513
Mark on your equipment certifies that it meets requirements of all subjected EU regulations
Distributor:
Manufacturer:
Metrel d.d.
Ljubljanska cesta 77
SI-1354 Horjul
E-mail: metrel@metrel.si
http://www.metrel.si
© 2010 – 2019 Metrel
Version note: ver. 5.3.5 relates to HW 5 version with floating HV and additional voltage
detection on PE of installation part.
No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.
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MI 3321 MultiservicerXA Table of contents
1 General description ............................................................................................ 8
1.1 Warnings ........................................................................................................... 9
1.2 Warning markings on connector panel ............................................................ 10
1.3 Standards applied ........................................................................................... 10
2 Instrument description ..................................................................................... 12
2.1 Front panel ...................................................................................................... 12
2.2 Safety pre-tests ............................................................................................... 13
2.3 Symbols and messages .................................................................................. 14
2.4 Dual supply voltage operation ......................................................................... 17
3 Technical specifications ................................................................................... 18
3.1 Withstanding 1890 V, 2200 V .......................................................................... 18
3.2 Withstanding 1000 V ....................................................................................... 18
3.3 Discharging time .............................................................................................. 19
3.4 Continuity ........................................................................................................ 19
3.5 Insulation resistance, Insulation – S resistance ............................................... 20
3.6 Subleakage current, Subleakage – S current .................................................. 20
3.7 Differential Leakage current ............................................................................ 21
3.8 Power / Functional test .................................................................................... 21
3.9 Touch leakage current ..................................................................................... 21
3.10 Polarity test ...................................................................................................... 21
3.11 Clamp current ................................ .................................................................. 22
3.12 PRCD testing ................................................................................................... 22
3.13 RCD testing ..................................................................................................... 22
3.13.1 General data ............................................................................................ 22
3.13.2 Contact voltage RCD-Uc .......................................................................... 23
3.13.3 Trip-out time ................................ ................................ ............................. 23
3.13.4 Trip-out current ......................................................................................... 24
3.14 Fault loop impedance ...................................................................................... 24
3.14.1 Zs ............................................................................................................. 24
3.14.2 Zs(rcd), Rs(rcd) ........................................................................................ 25
3.14.3 High precision fault loop impedance Z mL-Pe ....................................... 25
3.14.4 Contact voltage ........................................................................................ 26
3.15 Line impedance ............................................................................................... 26
3.15.1 High precision line impedance ................................................................. 27
3.16 Voltage, frequency, and phase rotation ........................................................... 28
3.16.1 Phase rotation .......................................................................................... 28
3.16.2 Voltage, Frequency .................................................................................. 28
3.17 General data .................................................................................................... 28
4 Main menu and test modes .............................................................................. 30
4.1 Help menus ..................................................................................................... 30
4.2 Instrument main menu ..................................................................................... 30
4.3 General settings menu .................................................................................... 31
4.3.1 Setting date and time ............................................................................... 32
4.3.2 Language selection .................................................................................. 32
4.3.3 Print header .............................................................................................. 33
4.3.4 Viewing of instrument data ....................................................................... 33
4.3.5 Display contrast adjustment ..................................................................... 34
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MI 3321 MultiservicerXA Table of contents
4.3.6 Reset instrument settings ................................................................ ......... 34
4.3.7 Communication settings ........................................................................... 35
4.3.8 Edit User / device data menu ................................................................... 36
4.3.8.1 Users submenu ............................................................................................. 36
4.3.8.2 Devices submenu .......................................................................................... 37
4.3.8.3 Test sites submenu ........................................................................................ 37
4.3.8.4 Locations submenu ........................................................................................ 38
4.3.9 Password ................................................................................................. 39
4.3.10 Result .......................................................................................................... 40
5 PAT testing operating mode ............................................................................ 42
5.1 PAT testing main menu ................................................................................... 42
5.2 VDE organizer menu ....................................................................................... 42
5.3 Autotest custom menu ..................................................................................... 43
5.4 Project autotests menu .................................................................................... 43
5.5 Barcode / TAG menu ....................................................................................... 43
5.6 Single test menu .............................................................................................. 44
5.7 Recall/ delete/ send results menu ................................................................... 44
5.8 Data upload / download menu ......................................................................... 45
5.9 Setup menu ..................................................................................................... 45
5.9.1 Instrument settings ................................................................................... 45
6 Single tests in PAT testing mode .................................................................... 47
6.1 Performing measurements in single test mode ............................................... 47
6.2 Measurements – Single tests for appliances ................................................... 48
6.2.1 Earth bond resistance .............................................................................. 48
6.2.1.1 Compensation of test leads resistance .......................................................... 49
6.2.2 Insulation resistance................................................................................. 49
6.2.3 Insulation resistance - S ........................................................................... 51
6.2.4 Substitute leakage current ........................................................................ 53
6.2.5 Substitute leakage - S .............................................................................. 55
6.2.6 Differential leakage current ...................................................................... 57
6.2.7 Touch leakage current .............................................................................. 58
6.2.8 Polarity test .............................................................................................. 60
6.2.9 Clamp current test .................................................................................... 61
6.2.10 PRCD test ................................................................................................ 63
6.2.10.1 PRCD single test ....................................................................................... 64
6.2.10.2 Automatic PRCD test ................................................................................. 65
6.2.11 Power / Functional test ............................................................................. 67
6.3 Measurements – Single tests for welding machines ........................................ 68
6.3.1 Continuity of the protective circuit ............................................................ 68
6.3.2 Insulation resistance (supply circuit to protective circuit) ............................... 69
6.3.3 Insulation resistance (welding circuit to protective circuit) ............................. 70
6.3.4 Insulation resistance (supply circuit to welding circuit) ............................. 71
6.3.5 Insulation resistance (supply circuit of class II equipment to accessible
surfaces) ................................................................................................................. 72
6.3.6 Welding circuit leakage current ...................................................................... 73
6.3.7 Primary leakage current................................................................................. 74
6.3.8 Touch leakage current ................................................................................... 75
6.3.9 No load voltage .............................................................................................. 75
6.3.10 Clamp current test .................................................................................... 76
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MI 3321 MultiservicerXA Table of contents
6.3.11 Functional test .......................................................................................... 76
7 Autotest sequences ................................ ................................ .......................... 77
7.1 VDE organizer – general menu ....................................................................... 77
7.1.1 VDE organizer operation .......................................................................... 79
7.1.2 Example of creating a test sequence with VDE organizer ........................ 80
7.2 Custom autotests ............................................................................................ 81
7.2.1 Deleting an existing custom test sequence .............................................. 82
7.2.2 Viewing, modifying and saving an custom autotest .................................. 82
7.3 Project autotests .............................................................................................. 84
7.3.1 Selecting a project autotest ...................................................................... 84
7.3.2 Starting a project autotest ........................................................................ 87
7.3.3 Comparison of results (evaluation of result trends) .................................. 87
7.4 Barcode / TAG autotests ................................................................................. 88
7.4.1 Working with RFID tags ............................................................................ 89
7.4.2 Working with barcode reader ................................................................... 90
7.5 Performing autotest sequences – for appliances ............................................. 92
7.5.1 Visual inspection ...................................................................................... 92
7.5.2 Earth bond resistance measurement........................................................ 92
7.5.3 Insulation resistance measurement .......................................................... 93
7.5.4 Insulation resistance S measurement ...................................................... 93
7.5.5 Substitute leakage current measurement ................................................. 94
7.5.6 Substitute leakage S measurement.......................................................... 94
7.5.7 Differential leakage current ...................................................................... 95
7.5.8 Touch leakage current measurement ....................................................... 95
7.5.9 Polarity test .............................................................................................. 95
7.5.10 TRMS current measurement using clamp current adapter ....................... 96
7.5.11 PRCD test ................................................................................................ 96
7.5.12 Functional test .......................................................................................... 96
7.6 Performing autotest sequences – for welding machines ................................. 97
7.6.1 Visual inspection ...................................................................................... 97
7.6.2 Continuity of the protective circuit ............................................................ 98
7.6.3 Insulation resistance (supply circuit to protective circuit) .......................... 98
7.6.4 Insulation resistance (welding circuit to protective circuit) ........................ 99
7.6.3 Insulation resistance (supply circuit to welding circuit) ............................. 99
7.6.6 Insulation resistance (supply circuit of class II equipment to accessible
surfaces) ............................................................................................................... 100
7.6.7 Welding circuit leakage current .............................................................. 100
7.6.8 Primary leakage current ......................................................................... 100
7.6.9 Touch leakage current ............................................................................ 101
7.6.10 No load voltage ...................................................................................... 101
7.6.11 TRMS current measurement using clamp current adapter ..................... 102
7.6.12 Functional test ........................................................................................ 102
8 Working with autotest results ........................................................................ 103
8.1 Saving autotest results .................................................................................. 103
8.2 Recalling results ................................................................ ............................ 104
8.3 Deleting results .............................................................................................. 106
8.4 Downloading and printing results .................................................................. 107
8.5 Data upload / download ................................................................................. 111
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MI 3321 MultiservicerXA Table of contents
8.6 Setup menu ................................................................................................... 111
8.6.1 Instrument settings ................................................................................. 111
9 Machine testing operating mode ................................................................... 114
9.1 Single tests (machine testing) menu ............................................................. 114
9.2 Measurements and inspections ..................................................................... 115
9.2.1 Visual test ............................................................................................... 115
9.2.2 Continuity ............................................................................................... 116
9.2.2.1 Single continuity test .................................................................................... 117
9.2.2.2 Auto-continuity test ...................................................................................... 118
9.2.2.3 Compensation of test leads resistance ........................................................ 120
9.2.3 Insulation resistance............................................................................... 120
9.2.4 High Voltage withstanding test ............................................................... 122
9.2.5 Loop impedance and prospective fault current ....................................... 125
9.2.5.1 Z mL-Pe, High precision loop impedance measurement ........................... 128
9.2.6 RCD tests ............................................................................................... 130
9.2.6.1 Contact voltage (RCD Uc) ........................................................................... 132
9.2.6.2 Trip out time (RCD t) .................................................................................... 134
9.2.6.3 Trip out current (RCD I) ............................................................................... 134
9.2.6.4 RCD Autotest ............................................................................................... 135
9.2.7 PRCD test .............................................................................................. 137
9.2.8 Discharging Time ................................................................................... 137
9.2.9 Voltage ................................................................................................... 140
9.2.10 Functional test ........................................................................................ 143
10 Switchgear testing operating mode .............................................................. 145
10.1 Single tests (switchgear testing) menu .......................................................... 145
10.2 Measurements and inspections ..................................................................... 146
10.2.1 Visual test ............................................................................................... 146
10.2.2 Continuity ............................................................................................... 147
10.2.2.1 Single continuity test ................................................................................ 148
10.2.2.2 Auto-continuity test .................................................................................. 149
10.2.2.3 Compensation of test leads resistance..................................................... 151
10.2.3 Insulation resistance............................................................................... 151
10.2.4 High Voltage withstanding test ............................................................... 153
10.2.5 Discharging Time ................................................................................... 156
10.2.6 Voltage ................................................................................................... 159
10.2.7 RCD test ................................................................................................. 161
10.2.8 PRCD test .............................................................................................. 161
10.2.9 Functional test ........................................................................................ 161
10.2.10 Power ................................................................................................. 162
11 All tests operating mode ................................................................................ 163
11.1 Single tests (All tests) menu .......................................................................... 163
11.1.1 Visual test ............................................................................................... 164
11.1.2 Continuity of protective conductors ........................................................ 164
11.1.3 Insulation resistance............................................................................... 164
11.1.4 Insulation resistance –S ......................................................................... 164
11.1.5 Substitute leakage current ...................................................................... 164
11.1.6 Substitute leakage current - S ................................................................ 165
11.1.7 Leakage current ..................................................................................... 165
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MI 3321 MultiservicerXA Table of contents
11.1.8 Touch leakage current ............................................................................ 165
11.1.9 Polarity test ............................................................................................ 165
11.1.10 Clamp current test .............................................................................. 165
11.1.11 RCD test ............................................................................................. 165
10.2.12 PRCD test ........................................................................................... 165
11.1.13 Functional test .................................................................................... 165
11.1.14 HV test ................................................................ ................................ 165
11.1.15 Line impedance and prospective short circuit current test .................. 165
11.1.15.1 Low line impedance ................................................................................. 168
11.1.16 Loop impedance test and prospective fault current ............................ 171
11.1.17 Voltage ............................................................................................... 171
11.1.18 Discharging time ................................................................................. 171
11.1.19 Power ................................................................................................. 171
12 Working with results in Machine testing, Switchgear testing and All tests
operating mode ............................................................................................... 172
12.1 Memory organization ..................................................................................... 172
12.2 Saving single test results ............................................................................... 172
12.3 Recalling projects ................................ .......................................................... 173
12.4 Deleting single test results............................................................................. 175
12.5 Deleting project(s) ......................................................................................... 176
12.6 Downloading and printing results .................................................................. 176
13 Maintenance .................................................................................................... 179
13.1 Periodic calibration ........................................................................................ 179
13.2 Fuses............................................................................................................. 179
13.3 Service .......................................................................................................... 179
13.4 Cleaning ........................................................................................................ 179
14 Instrument set and accessories ..................................................................... 180
A Appendix A – Preprogramed autotests ......................................................... 181
B Appendix B – Autotest shortcut codes ......................................................... 190
C Appendix C - Fuse table / I
........................................................................ 192
PSC
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MI 3321 MultiservicerXA General description
1 General description
The multifunctional portable test instrument MultiservicerXA is intended to perform all
measurements for testing the electrical safety of portable electrical equipment,
machines and switchboards. The following tests can be performed:
- Earth bond / Continuity test,
- Insulation resistance,
- Substitute leakage current,
- Differential leakage current,
- Touch leakage current,
- IEC cord polarity test,
- Leakage and TRMS load currents with current clamp,
- Portable RCD test,
- Power test,
- Three phase voltage/ rotary field,
- Line and Loop impedance,
- RCD test,
- Discharging time,
- High voltage (Withstanding) test,
- Functional and Visual inspection,
The measurements are divided into four subgroups:
- Tests for testing portable DUTs acc. to VDE 0701-0702
- Tests for testing electrical safety of machines acc. to EN 60204 Ed.5
- Tests for testing safety of switchboards EN 61439
- All tests. Because of the large set of functions the instruments is suitable also for
safety testing (type testing, maintenance, routine testing) according to other
product standards.
In addition, with adapter A1322 active tests of three phase appliances can be carried
out.
With adapter A1422 active tests of three phase appliances and testing of welding
machines acc. to EN 60974 / VDE 0544 can be carried out.
The instrument has a powerful test data management system. Autotests and single
tests can be stored (depending on the application) in approx. 6000 memory locations.
Some instrument's highlights:
- Large graphic LCD display with resolution of 240 128 dots, with back-light,
- Over 6000 memory locations in data flash memory for storing test results &
parameters,
- Three communication ports (USB and 2 RS232C) for communication with PC,
barcode reader/writer, printers and optional test adapters,
- Soft touch keyboard with cursor keys,
- Built in real time clock,
- Fully compatible with new METREL PATLink PRO PC software package.
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MI 3321 MultiservicerXA General description
In PAT testing operating mode powerful functions for fast and efficient periodic testing
are included:
- Pre-programmed test sequences,
- Fast testing with barcode identification systems,
- Test data can be uploaded from PC,
- On site comparisons between old and new test results can be performed,
- Enables on site printing of test labels.
1.1 Warnings
In order to reach high level of operator safety while carrying out various measurements
using MultiservicerXA instrument, as well as to keep the test equipment undamaged, it
is necessary to consider the following general warnings:
Read this Instruction manual carefully, otherwise use of the instrument may
be dangerous for the operator, for the instrument or for the equipment under
test!
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 manner not specified in this Instruction manual
the protection provided by the equipment may be impaired!
Do not use the instrument and accessories if any damage is noticed!
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
300 V!
Use only standard or optional test accessories declared for this instrument
supplied by your distributor!
Regularly check the instrument and accessories for correct functioning to
avoid hazard that could occur from misleading results!
The protection class of the TP1 test terminal is CAT III / 300V. It means that
maximum allowed voltage between test terminals and ground is 300 V!
Correctly earthed mains sockets shall only be used to supply the instrument!
In case a fuse has blown follow the instructions in this Instruction manual to
replace it!
Instrument servicing and calibration is allowed to be carried out only by a
competent authorized person!
Hazardous voltages of up to 2200 V nominal are applied to the HV terminals
during the Withstanding test. It is advisable to keep the current trip out limit as
low as possible. Risk of electric shock!
It is advisable not to run tested devices with load currents above 13 A for more
than 15 minutes. Load currents higher than 13 A can result in excessive
temperatures of On/Off switch and fuse holders!
For working with the instrument use only original supplied power supply cord
with 1.5 mm2 wires cross-section (csa)!
All normal safety precautions have to be taken in order to avoid risk of electric
shock when working on electrical installations!
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MI 3321 MultiservicerXA General description
EN 61326 -1
Electrical equipment for measurement, control and laboratory use –
EMC requirements
Class B (Portable equipment used in controlled EM environments)
EN 61010 - 1
Safety requirements for electrical equipment for measurement,
control, and laboratory use – Part 1: General requirements
EN 61010-2-030
Safety requirements for electrical equipment for measurement,
control and laboratory use – Part 2-030: Particular requirements for
testing and measuring circuits
EN 61010 - 031
Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 031: Safety requirements for handheld probe assemblies for electrical measurement and test
EN 61010-2-032
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
VDE 0404-1
Testing and measuring equipment for checking the electric safety of
electric devices - Part 1: General requirements
VDE 0404-2
Testing and measuring equipment for checking the electric safety of
electric devices - Part 2: Testing equipment for tests after repair,
change or in the case of repeat tests
VDE 0701-702
Inspection after repair, modification of electrical appliances –
Periodic inspection on electrical appliances
General requirements for electrical safety
EN 60204-1
Safety of machinery - Electrical equipment of machines - Part 1:
General requirements
EN 61439-1
Low-voltage switchgear and controlgear assemblies - Part 1:
General rules
EN 61008-1
Residual current operated circuit-breakers without integral
overcurrent protection for household and similar uses (RCCBs) - Part
1: General rules
EN 62423
Type F and type B residual current operated circuit-breakers with
1.2 Warning markings on connector panel
Refer to chapter 2.1 Front panel.
1.3 Standards applied
The MultiservicerXA instrument is manufactured and tested according to the following
regulations, listed below.
Electromagnetic compatibility (EMC)
Safety (LVD)
Functionality
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MI 3321 MultiservicerXA General description
and without integral overcurrent protection for household and similar
uses
EN 50191
Erection and operation of electrical test equipment
EN 61557-1
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 1: General requirements
EN 61557-2
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 2: Insulation resistance
EN 61557-3
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 3: Loop impedance
EN 61557-4
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 4: Resistance of earth connection and
equipotential bonding
EN 61557-6
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 6: Effectiveness of residual current
devices (RCD) in TT, TN and IT systems
EN 61557-7
Electrical safety in low voltage distribution systems up to 1 000 V a.c.
and 1 500 V d.c. - Equipment for testing, measuring or monitoring of
protective measures - Part 7: Phase sequence
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.
Note:
Various devices and appliances can be tested by MultiservicerXA and in further text the
common DUT (abbreviation for Device Under Test) is applied.
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MI 3321 MultiservicerXA Instrument description
Front panel
1
240 128 dots graphic matrix display with backlight.
2
Mains supply connector.
3
Two T16 A / 250 V fuses for instrument protection.
4
Mains switch with indicator.
5
Barcode and RFID reader / writer connector.
6
PC / printer connector.
Note:
The connector is also intended for connection of compatible external test
adapters, like A 1143, impedance adapter or A 1422 3-phase adapter.
7
USB connector.
8
Current clamps input sockets.
Warnings!
Do not connect any voltage source on this input. It is intended only for
connection of current clamp with current output. Maximum input
current is 30 mA!
Green socket is connected to the functional earth of the system and is
2 Instrument description
2.1 Front panel
Legend:
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MI 3321 MultiservicerXA Instrument description
intended for connection with shield of leakage current clamps only
(e.g. A 1283).
9
Function keys intended for displayed defined options.
10
ESCAPE key.
11
START key.
12
STOP key.
13
Alpha-numeric keyboard.
14
Cursor keys and ENTER key.
15
Test socket (230 V).
Warning!
Line voltage is present on the test socket during the measurement.
Maximum output current is 16 A. Test only devices with maximum rated
supply current not higher than 16 A!
Note:
For devices incorporating high reactive loading, e.g. motor with rated power
>1.5 kW, it is recommended to start measurement first and to turn on the
tested device later.
16
LN and PE sockets for testing the insulation resistance and substitute leakage
current of fixed installed DUTs.
Warning!
These sockets are intended only for the connection to de-energized
devices.
17
TP1 test socket for testing discharge time and electrical installation parameters
like line / loop impedances, voltage, residual current devices, 3-phase
sequence.
18
C2 connector, used as output for continuity tests (in machine, switchboard and
All operating modes).
19
Light indicator of active HV outputs
20
HV test connectors output.
Warning!
A high and dangerous voltage of up to 2200 V a.c. nominal is applied at
this output during the measurement!
21
Test probe (S/C1) connector, used as output for earth bond/ continuity tests and
probe input for class 2 equipment tests (insulation resistance-S, substitute
leakage-S and touch leakage currents ).
22
Cover for preventing simultaneous access of two connectors IEC (23) and S/C1
(21)
23
IEC appliance connector for testing supply cords.
Warning!
The connector input is for test purpose only; do not connect it to the
mains supply!
2.2 Safety pre-tests
Before performing a measurement, the instrument performs a series of pre-tests to
ensure safety and to prevent any damage. These safety pre-tests are checking for:
- Any external voltage against earth on mains test socket,
- Excessively high leakage current,
- Excessively high touch leakage current,
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MI 3321 MultiservicerXA Instrument description
Mains voltage is not
correct or PE not
connected.
Check mains voltage
and PE connection!
Warning for improper supply voltage condition. Possible
causes:
- No earth connection or other wiring problem on
supply socket.
- Incorrect mains voltage.
Determine and eliminate the problem before proceeding!
Warning:
- The instrument must be earthed properly!
Warning!
Instrument is
connected to the IT
earthing system or PE
not connected.
Press START key to
continue.
Supply voltage warning. Possible causes:
- No earth connection,
- Instrument connected to an IT earthing system.
Press the START key to continue if instrument is connected
to the IT supply system.
Warning:
- The instrument must be properly earthed!
Resistance L – N too
high (>30 k).
Check fuse and switch.
Are you sure to
proceed? (Y/N)
An excessively high resistance was measured in the fuse
pre-test. Indication means that tested device has too low
consumption or is:
- Not connected,
- Switched off,
- Contains a fuse that has blown.
Select YES or NO with Y or N key.
Resistance L – N low.
Are you sure to
proceed? (Y/N)
A low resistance of the device under test (DUT) supply input
was measured in the pre-test. This means that it is very
likely that an excessively high current will flow after applying
power to the DUT. If the high current is only of short duration
(caused by a short inrush current) the test can be performed,
otherwise not.
Select YES or NO with Y or N key.
Resistance L – N too
low.
Are you sure to
proceed? (Y/N)
An extremely low resistance of the DUT supply input was
measured in the pre-test. It is likely that fuses will blow after
applying power to the DUT. If the too high current is only of
short duration (caused by a short inrush current) the test can
be performed otherwise it must be stopped.
Select YES or NO with Y or N key.
- Short circuit or too low resistance between L and N of tested device,
- Correct input mains voltage,
- Input PE connection.
If pre-tests fail, an appropriate warning message will be displayed.
The warnings and measures are described in chapter 2.3 Symbols and messages.
2.3 Symbols and messages
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MI 3321 MultiservicerXA Instrument description
It is recommended to additionally check the DUT before
proceeding with the test!
Leakage LN-PE high.
Are you sure to
proceed? (Y/N)
Dangerous leakage current (higher than 3.5 mA) will flow if
power would be connected to DUT.
Select YES or NO with Y or N key.
Proceed with testing only if all safety measures have been
taken. It is recommended to perform a thorough earth bond
test on the PE of the DUT before proceeding with the test.
Leakage LN-PE too
high.
Dangerous leakage current (higher than 20 mA) will flow if
power would be connected to the DUT.
Determine and eliminate the problem before proceeding!
Leakage LN-PE or
S/C1-PE too high!
Are you sure to
proceed? (Y/N)
Dangerous leakage current (higher than 20 mA) would flow if
power were connected to the DUT.
Select YES or NO with Y or N key.
Proceed with testing only if all safety measures have been
taken.
It is recommended to perform a thorough earth bond test on
the PE of the DUT before proceeding with the test.
Measurement aborted!
Differential leakage too
high!
An exceptionally high leakage current (higher than about
5 mA) was measured through PE test terminal or PE socket
during the pre-test or test.
Leakage test S/C1-PE
too high!
An exceptionally high leakage current (higher than about
5 mA) was measured through S/C1 test terminal during the
pre-test.
External voltage on
test socket too high!
DANGER!
- Voltage on mains test socket or LN/PE terminals
is higher than approximately 20 V (AC or DC)!
Disconnect the DUT from the instrument immediately and
determine why external voltage was detected!
External voltage on
S/C1 too high!
DANGER!
- Voltage on test probe (S/C1) is higher than
approximately 25 V (AC or DC)!
Disconnect the test probe from the DUT and determine why
external voltage was detected!
Test was skipped for
safety!
Instrument skipped the required test because of a failed
previous test.
15
MI 3321 MultiservicerXA Instrument description
Overheated!
Temperature of internal components of the instrument
reached their top limit. Measurement is prohibited until the
internal temperature has reduced.
Warning!
More than 80 % of
memory is occupied.
Stored data should be
downloaded to PC.
Instrument memory is almost full. Download stored results to
PC.
Warning!
Calibration has been
expired.
Recalibration of the instrument is required. Contact your
dealer.
Warning!
Too high contact
voltage.
A too high contact voltage was detected before an RCD test
being carried out. Check PE connections!
Warning!
Too high voltage on
PE.
Hazardous live voltage on TP1 PE input is present before
running Voltage, Line impedance, Zs, RCD and PRCD tests.
Warning!
Immediately disconnect supply from tested
installation / equipment and check and correct PE
wiring!
Hardware error.
Return the instrument
to the repair centre.
The instrument detects a serious failure.
Connect the test lead to the S/C1 test socket.
Remove the S/C1 connection, especially if it is connected to
any part that will begin to rotate or move when power is
applied.
Connect the test leads to the S/C1 and C2 test sockets.
Warning!
A high voltage is / will be present on the instrument output!
(Withstanding test voltage, Insulation test voltage, or mains
voltage).
16
MI 3321 MultiservicerXA Instrument description
The DUT should be switched on (to ensure that the
complete circuit is tested).
Connect the lead to be tested to the TP1 test terminal.
Connect the cord to be tested to the IEC test terminal.
Connect current clamps for this test.
Test leads resistance in Earth bond and Continuity functions
is compensated.
Test passed.
Test failed.
Some tests in the autotest sequence were skipped, but all
performed tests passed.
2.4 Two rated supply voltages
The MultiservicerXA will operate either at 110 V or 230 V, 50 Hz or 60 Hz mains supply
input.
Notes:
The PAT will conduct a leakage / power tests at the power up mains voltage.
Therefore, to perform a run test on a 110 V DUT (e.g. 110 V drills), the PAT must
be powered from a 110 V mains supply (or center tapped transformer).
The mains voltage does not influence other measurements.
17
MI 3321 MultiservicerXA Technical specifications
Range
Resolution
Accuracy
0 V … 3000 V
1 V
(3 % of reading + 5 digit)
Range
Resolution
Accuracy
0.0 mA … 99.9 mA
0.1 mA
(10 % of reading + 8 digit)
Withstanding voltage
HV sockets
Range
Resolution
Accuracy
0 V … 1500 V
1 V
(3 % of reading + 5 digit)
Range
Resolution
Accuracy
0.0 mA … 199.9 mA
0.1 mA
(5 % of reading + 5 digit)
Withstanding voltage
HV sockets
3 Technical specifications
3.1 Withstanding 1890 V, 2200 V
Withstanding voltage
Withstanding current*
* Displayed apparent current
Output voltage: ......................... 1890 V (±3%)*, 2200 V (±3%)*, floating
*at mains voltage = 230 V and max. output current (= 100 mA)
Trip out current [mA]: ................ 2, 5, 10, 20, 50, 100; (accuracy 10 %)
Trip out time: ............................ < 30 ms
Timer [s]: .................................. 1, 2, 3, 5, 10, 30, 60. START button must be pressed
for operation
Short circuit current at nominal output voltage……………………………...... > 200 mA
Minimum primary voltage .......... 190 V (95 V) for Isc = 200 mA @ 2200 V winding
Minimum primary voltage .......... 180 V (90 V) for Isc = 200 mA @ 1890 V winding
Test terminals:
3.2 Withstanding 1000 V
Withstanding voltage
Withstanding current*
* Displayed apparent current
Output voltage / power: ............. 1000 V -0 %,+20 % / 200 W at U
Trip out current [mA]: ................ 5, 10, 20, 50, 100, 200; (accuracy 10 %)
Trip out time: ............................. <30 ms
Timer [s]: ................................... 1, 2, 3, 5, 10, 30, 60; START button must be pressed
for operation
Short circuit current at nominal output voltage……………………………...... > 200 mA
Minimum primary voltage .......... 160 V (80 V) for Isc = 200 mA @ 1000 V winding
Test terminals:
230 V, floating
mains
18
MI 3321 MultiservicerXA Technical specifications
Range
Resolution
Accuracy
0.0 s … 9.9 s
0.1 s
(5 % of reading + 3 digit)
Range
Resolution
Accuracy
0 V… 550 V
1 V
(5 % of reading + 5 digit)
Discharging time
TP1 test terminal L↔N
Range
Resolution
Accuracy
0.00 … 1.99
0.01
(5 % of reading + 3 digits)
Indicator only: 2.0 … 19.9
Range
Resolution
Accuracy
0.000 … 0.999
0.001
(5 % of reading + 6 digits)
1.00 … 1.99
0.01
(5 % of reading + 3 digits)
Indicator only: 2.0 … 19.9
Range
Resolution
Accuracy
0.00 … 1.99
0.01
(5 % of reading + 3 digits)
Indicator only: 2.0 … 19.9
Continuity (PAT)
S ↔ PE (mains test socket) ; (200 mA and 10 A)
S ↔ PE; (200 mA)
Continuity (other)
S/C1 ↔ C2
3.3 Discharging time
Discharging time
Peak voltage
2 wires system, triggered on DC voltage falling slope
Max. working voltage: ............... 550 V peak
Min. working voltage: ................ 85, 170 V peak
Threshold values: ..................... 1 s, 5 s
Threshold voltage level: ............ 60 V, 120 V
Input resistance: ....................... 48 M
Test terminals:
3.4 Continuity
Continuity 10 A (PAT)
Continuity 10 A (other)
Continuity 200 mA
Test currents: ............................ 10 A into 100 m at rated mains supply voltage
200 mA into 2.00
Open circuit voltage: ................. <9 V AC
Test leads resistance compensation: .............................. yes,
Pass levels []: ......................... 0.01 … 0.09, 0.10 … 0.90, 1.00 … 9.00
Test duration [s]: ....................... 5, 10, 30, 60, 120, 180
Test method: ............................. 2-wire measurement, floating to earth
Test terminals:
19
MI 3321 MultiservicerXA Technical specifications
Range
Resolution
Accuracy
0.000 M … 0.500 M
0.001 M
(10 % of reading + 5 digits)
0.501 M … 1.999 M
0.001 M
(5 % of reading + 3 digits)
2.00 M … 19.99 M
0.01 M
20.0 M … 199.9 M
0.1 M
Range
Resolution
Accuracy
0.000 M … 0.500 M
0.001 M
(10 % of reading + 5 digits)
0.501 M … 1.999 M
0.001 M
(5 % of reading + 3 digits)
2.00 M … 19.99 M
0.01 M
Insulation (PAT)
LN (mains test socket)/ LN ↔ PE ( mains test socket) / PE/S
Insulation – S
LN(mains test socket)/ LN ↔ S
Insulation (other)
LN ↔ PE
Range
Resolution
Accuracy
0.00 mA … 19.99 mA
0.01 mA
(5 % of reading + 5 digits)
Subleakage (PAT)
LN (mains test socket)/ LN ↔ PE ( mains test socket) / PE/S
Subleakage – S
LN(mains test socket)/ LN ↔ S
Subleakage (other)
LN ↔ PE
3.5 Insulation resistance, Insulation – S resistance
Insulation resistance
Insulation – S resistance
Nominal voltages: ..................... 250 V DC, 500 V DC (- 0 %, + 10 %)
Measuring current: .................... min. 1 mA at 250 k (250 V), 500 k (500 V)
Short circuit current: .................. max. 2.0 mA
Pass levels [M]: ...................... 0.10, 0.30, 0.50, 1.00, 2.00, 4.0, 7.0, 10.0, none
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Test terminals:
3.6 Subleakage current, Subleakage – S current
Substitute leakage current
Open circuit voltage: ................. <50 V AC at rated mains voltage
Short circuit current: .................. <40 mA
Pass levels [mA]: ...................... 0.25, 0.50, 0.75, 1.00, 1.50, 2.50, 3.50, 4.00, 4.50, 5.00,
5.50, 6.00, 7.00, 8.00, 9.00, 15.0
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Displayed current: ..................... calculated to DUT nominal mains supply voltage
(110 V or 230 V).
Frequency response: ................ complies to EN 61010-1, Figure A1
Test terminals:
20
MI 3321 MultiservicerXA Technical specifications
Range
Resolution
Accuracy
0.00 mA … 9.99 mA
0.01 mA
(5 % of reading + 5 digits)
Differential leakage
mains test socket
Range
Resolution
Accuracy
0.00 kVA … 4.00 kVA
0.01 kVA
(5 % of reading + 3 digits)
Power
mains test socket
Range
Resolution
Accuracy
0.00 mA … 2.50 mA
0.01 mA
(10 % of reading + 5 digits)
Touch leakage
mains test socket or external source/ S
Differential leakage
Mains test socket ↔ IEC
3.7 Differential Leakage current
Differential leakage current
Pass levels [mA]: ...................... 0.25, 0.50, 0.75, 1.00, 1.50, 2.50, 3.00 mA, 3.50, 4.00,
4.50, 5.00, 5.50, 6.00, 7.00, 8.00, 9.00, none
Test duration [s] ........................ 5, 10, 30, 60, 120, none
Frequency response: ................ complies to EN 61010-1, Figure A1
Test terminals:
3.8 Power / Functional test
Apparent power
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Test terminals:
3.9 Touch leakage current
Touch leakage current
Pass levels [mA]: ...................... 0.25, 0.50, 0.75, 1.00, 1.50, 2.00, none
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Output: ...................................... test socket, test probe connector
Impedance,
Frequency response: ................ complies to EN 61010-1, Figure A1
Test terminals:
3.10 Polarity test
Test voltage .............................. <50 V AC
Detects ..................................... Pass, L-open, N-open, PE-open, L-N crossed, L-PE
Test terminals:
crossed, N-PE crossed, L-N shorted, L-PE shorted, NPE shorted, multiple faults
21
MI 3321 MultiservicerXA Technical specifications
Range
Resolution
Accuracy*
0.00 mA … 9.99 mA
0.01 mA
(5 % of reading + 10 digits)
10.0 mA … 99.9 mA
0.1 mA
(5 % of reading + 5 digits)
100 mA … 999 mA
1 mA
(5 % of reading + 5 digits)
1.00 A … 9.99 A
0.01 A
(5 % of reading + 5 digits)
10.0 A … 24.9 A
0.1 A
(5 % of reading + 5 digits)
Clamp current
Clamp inputs
Range
Resolution
Accuracy
0 ms … 300 ms(½IN)
1 ms
3 ms
0 ms … 300 ms (IN)
1 ms
0 ms … 40 ms (5IN)
1 ms
½IN
IN
5IN
t > 300 ms
t < 300 ms
t < 40 ms
PRCD testing
TP1 test sockets
3.11 Clamp current
True RMS current using 1000:1 current clamp
*It does not consider accuracy of current transformer.
Pass levels [mA]: ...................... 0.25, 0.50, 0.75, 1.00, 1.50, 2.25, 2.50, 3.00, 3.50, 5.00,
9.00, none
Test duration [s]: ....................... 5, 10, 30, 60, 120, none
Test terminals:
Temperature coefficient outside reference temperature limits is 1 % of measured value
per C
3.12 PRCD testing
Portable RCD trip-out time
Test currents (IN): .................... 10 mA, 15 mA, 30 mA
Test current multipliers: ............ ½IN, IN, 5IN
Start angle: ............................... 0, 180, both
Test modes: .............................. single, autotest
Voltage range: .......................... 100 V … 264 V (45 Hz … 65 Hz)
Pass / Fail limits:
Test terminals:
3.13 RCD testing
3.13.1 General data
Nominal residual current [mA]: . 10, 30, 100, 300, 500, 1000
Test current options: ................. 0.5IN, IN, 2IN, 5IN
Test currents accuracy: ............ -0 / +0.1I; I = IN, 2IN, 5IN
22
MI 3321 MultiservicerXA Technical specifications
RCD testing
TP1 test socket
IN × 1/2
IN × 1
IN × 2
IN × 5
RCD I
IN (mA)
AC A B*
AC A B*
AC A B
AC A B*
AC A B*
10 5 3.5 5 10
20
20
20
40
40
50
100
100
30
15
10.5
15
30
42
60
60
84
120
150
212
300
100
50
35
50
100
141
200
200
282
400
500
707
1000
300
150
105
150
300
424
600
600
848
n.a.
1500
n.a.
n.a.
500
250
175
250
500
707
1000
1000
1410
n.a.
2500
n.a.
n.a.
1000
500
350
500
1000
1410
n.a.
2000
n.a.
n.a.
n.a.
n.a.
n.a.
n.a.
Range
Resolution
Accuracy
0.0 V … 19.9 V
0.1 V
(-0 % / +15 %) of reading ± 10 digits
20.0 V … 99.9 V
(-0 % / +15 %) of reading
Range
Resolution
Accuracy
0 ms … 40 ms
1 ms
1 ms
-0.1I / +0; I = 0.5IN
Test current shape: ................... Sine-wave (AC), pulsed (A), smooth DC (B)*
DC offset for pulsed current: ..... 6 mA (typical)
RCD type: ................................. G (non-delayed), S (time-delayed)
Test current starting polarity: .... (+) or (-)
Voltage range: .......................... 40 V … 264 V (45 Hz … 65 Hz)
Test terminals:
RCD test current selection (r.m.s. value calculated to 20 ms) according to EN 61009-1:
n.a. ..................................................... not applicable
AC type ................................ .............. sine wave test current
A type…… ......................................... pulsed current
B type* ............................................... smooth DC current
Note:
All data (marked with “*”) regarding B type RCDs are valid for instrument HW version
3.0 and higher only.
3.13.2 Contact voltage RCD-Uc
Measuring range according to EN 61557-6 is 7.5 V … 62.0 V for limit contact voltage
50 V.
The accuracy is valid if mains voltage is stable during the measurement and PE
terminal is free of interfering voltages.
Test current: ............................. max. 0.5IN
Limit contact voltage: ................ 50 V
Specified accuracy is valid for complete operating range.
3.13.3 Trip-out time
Complete measurement range corresponds to EN 61557-6 requirements.
Maximum measuring times set according to selected reference for RCD testing.
23
MI 3321 MultiservicerXA Technical specifications
0 ms … 500 ms
1 ms
3 ms
Range
Resolution
Accuracy
0.2IN … 1.1IN (AC type)
0.05IN
0.1IN
0.2IN … 1.5IN (A type, IN ≥30 mA)
0.05IN
0.1IN
0.2IN … 2.2IN (A type, IN <30 mA)
0.05IN
0.1IN
0.2IN … 2.2IN (B type)*
0.05IN
0.1IN
Range
Resolution
Accuracy
0 ms … 300 ms
1 ms
3 ms
Range
Resolution
Accuracy
0.0 V … 19.9 V
0.1 V
(-0 % / +15 %) of reading 10 digits
20.0 V … 99.9 V
0.1 V
(-0 % / +15 %) of reading
Range ()
Resolution ()
Accuracy
0.00 … 9.99
0.01
(5 % of reading + 5 digits)
10.0 … 99.9
0.1
100 … 1999
1
10 % of reading
Measuring range (A)
Resolution (A)
Accuracy
0.00 … 9.99
0.01
Consider accuracy of fault
Test current ...................................... ½IN, IN, 2IN, 5I
5IN is not available for IN=1000 mA (RCD type AC) or I
N
300 mA (RCD types A,
N
B*).
2IN is not available for IN=1000 mA (RCD type A) or I
300 mA (RCD type B*).
N
1IN is not available for IN=1000 mA (RCD type B*).
Specified accuracy is valid for complete operating range.
3.13.4 Trip-out current
Trip-out current
Complete measurement range corresponds to EN 61557 requirements.
Trip-out time
Contact voltage
The accuracy is valid if mains voltage is stable during the measurement and PE
terminal is free of interfering voltages.
Trip-out measurement is not available for IN=1000 mA (RCD type A and type B*).
Specified accuracy is valid for complete operating range.
3.14 Fault loop impedance
3.14.1 Zs
Fault loop impedance
Measuring range according to EN 61557-3 is 0.25 … 9.99 k.
Prospective fault current (calculated value)
24
MI 3321 MultiservicerXA Technical specifications
10.0 … 99.9
0.1
loop resistance
measurement
100 … 999
1
1.00k … 9.99k
10
10.0k … 23.0k
100
Zs
TP1 test socket
Measuring range ()
Resolution ()
Accuracy
0.00 … 9.99
0.01
(5 % of reading + 10 digits)
10.0 … 99.9
0.1
100 … 1999
1
10 % of reading
Measuring range (A)
Resolution (A)
Accuracy
0.00 … 9.99
0.01
Consider accuracy of fault loop
resistance measurement
10.0 … 99.9
0.1
100 … 999
1
1.00k … 9.99k
10
10.0k … 23.0k
100
Zs(rcd), Rs(rcd)
TP1 test socket
Measuring range (m)
Resolution (m)
Accuracy
0.0 … 199.9
0.1
(5 % + 3 m)
200 … 1999
1
The accuracy is valid if mains voltage is stable during the measurement.
Test current (at 230 V): ............. 6.5 A (10 ms)
Nominal voltage range: ............. 30 V … 500 V (45 Hz … 65 Hz)
Pass limits: ............................... Appendix C
Test terminals:
3.14.2 Zs(rcd), Rs(rcd)
Fault loop impedance
Measuring range according to EN 61557-3 is 0.46 … 9.99 k.
Accuracy may be impaired in case of heavy noise on mains voltage
Prospective fault current (calculated value)*
* in Zs(rcd) only
Nominal voltage range: ............. 50 V … 500 V (45 Hz … 65 Hz)
No trip out of RCD.
Pass limits: ............................... Appendix C
Test terminals:
3.14.3 High precision fault loop impedance Z mL-Pe
Measuring range according to EN 61557-3: 12.0 m … 1.999
Nominal voltage range: ................... 100 V … 440 V
Nominal frequency: ......................... 50 Hz
25
MI 3321 MultiservicerXA Technical specifications
U
L-PE
= 230 V 10 %
U
N(L-PE)
= 230 V 10 %
230 V < UN < 400 V
C
MAX
1.05
1.10
C
MIN
0.95
1.00
Z mL-Pe
A1143: P1, P2, C1, C2
Measuring range (V)
Resolution (V)
Accuracy
0 … 100
1
(10 % + 3 digits)
High precision impedance
+ contact voltage
A1143: P1, P2, C1, C2, S
Measuring range ()
Resolution ()
Accuracy
0.00 … 9.99
0.01
(5 % of reading + 5 digits)
10.0 … 99.9
0.1
100 … 1999
1
10 % of reading
Measuring range (A)
Resolution (A)
Accuracy
0.00 … 0.99
0.01
Consider accuracy of line
resistance measurement
1.0 … 99.9
0.1
100 … 999
1
1.00k … 99.99k
10
100k … 199k
1000
Z
V230
=I
K
PE-L
PE)-L(NMAX
PE)-(LKMAX
Z
U×C
=I
HOT PE)-(L
PE)-L(NMIN
PE)-(LKMIN
Z
U×C
=I
2
PE-L
2
PE-LPE-L
X+R=Z
( )
2
PE-L
2
PE-LHOT PE)-(L
X+R×5.1=Z
Maximum test current (at 230 V):.... 154 A (10 ms)
Calculation of prospective short-circuit current (standard voltage value):
Calculation of prospective short-circuit current (non-standard voltage value):
Test terminals:
3.14.4 Contact voltage
Test terminals:
3.15 Line impedance
Line impedance
Measuring range according to EN 61557-3 is 0.25 … 9.99 k.
Prospective short-circuit current (calculated value)
26
MI 3321 MultiservicerXA Technical specifications
Z LINE
TP1 test socket
Measuring range (m)
Resolution (m)
Accuracy
0.1 … 199.9
0.1
(5 % + 3 m)
200 … 1999
1
U
L-N
= 230 V 10 %
U
L-L
= 400 V 10 %
U
N(L-N)
= 230 V 10 %
U
N(L-L)
= 400 V 10 %
230 V < UN < 400 V
C
MAX
1.05
1.10
C
MIN
0.95
1.00
High precision impedance
A1143: P1, P2, C1, C2
Z
V230
=I
K
Z
V400
=I
K
L-L
L)-L(NMAX
ph3KMAX
Z
2
×
3
U×C
=I
HOT L)-(L
L)-L(NMIN
ph3KMIN
Z
2
×
3
U×C
=I
L-L
L)-L(NMAX
ph2KMAX
Z
U×C
=I
HOT L)-(L
L)-L(NMIN
ph2KMIN
Z
U×C
=I
N-L
N)-L(NMAX
N)-(LKMAX
Z
U×C
=I
HOT N)-(L
N)-L(NMIN
N)-(LKMIN
Z
U×C
=I
2
L-L
2
L-LL-L
X+R=Z
( )
2
L-L
2
L-LHOT L)-(L
X+R×5.1=Z
2
N-L
2
N-LN-L
X+R=Z
( )
2
N-L
2
N-LHOT N)-(L
X+R×5.1=Z
Test current (at 230 V): ............. 6.5 A (10 ms)
Nominal voltage range: ............. 30 V … 500 V (45 Hz … 65 Hz)
Pass limits: ............................... See Appendix C
Test terminals:
3.15.1 High precision line impedance
Measuring range according to EN 61557-3 is 12.0 m … 1999 m
Nominal voltage range: ................... 100 V … 440 V
Nominal frequency: ......................... 50 Hz
Maximum test current (at 400V):..... 267 A (10 ms)
Calculation of prospective short-circuit current (standard voltage value):
Calculation of prospective short-circuit current (non-standard voltage value):
Test terminals:
27
MI 3321 MultiservicerXA Technical specifications
Result displayed
1.2.3 or 3.2.1
Phase rotation
TP1 test socket
Range
Resolution
Accuracy
0 … 550 V
1 V
(2 % of reading + 2 digits)
Range (Hz)
Resolution (Hz)
Accuracy
0.0, 14.0 … 499.9
0.1
(0.2 % of reading + 1 digit)
VOLTAGE
TP1 test socket
3.16 Voltage, frequency, and phase rotation
3.16.1 Phase rotation
Nominal system voltage range: 100 V AC … 550 V AC
Nominal frequency range: ......... 14 Hz … 500 Hz
Test terminals:
3.16.2 Voltage, Frequency
Result type: ............................... True r.m.s. (trms)
Nominal frequency range: ......... 0 Hz, 14 Hz … 500 Hz
Nominal voltage range: ............. 10 V … 550 V
Test terminals:
3.17 General data
Power supply
Rated supply voltage: ............... 115 V / 230 V AC
Supply voltage tolerance: ......... 10 %
Frequency of supply voltage: .... 50 Hz, 60 Hz
Max. power consumption: ......... 300 VA (without DUT)
Rated DUT: ............................... 16 A resistive, 1.5 kW motor
Overvoltage category
Instrument: ................................ CAT II / 300 V
Test socket: .............................. CAT II / 300 V
TP1 test socket: ........................ CAT III / 300 V
Plug test cable: ......................... 300 V CAT II
Universal test cable: ................. 300 V CAT III
Altitude: ..................................... ≤2000 m
Protection classification
HV output: ................................. Class I
TP1 test socket: ........................ Class II, double insulation
28
MI 3321 MultiservicerXA Technical specifications
Power supply: ........................... Class I
Pollution degree: ....................... 2
Degree of protection: ................ IP 50 (closed and locked cover)
.................................................. IP 20 main test socket
Case: ........................................ shock proof plastic / portable
Display: ..................................... 240*128 dots graphic matrix display with backlight
Memory: .................................... 6000 memory locations
Communication interface
RS232 interfaces: ..................... 1200 bps … 115200 bps, 1 start bit, 8 data bits, 1 stop
bit
RS232 connectors: ................... 9-pin sub miniature type D, female
USB interface: .......................... 1200 bps … 115200 bps
USB connector:......................... type B
Insulation:
Communication ports to PE: ..... 600 k, 5 %
Dimensions (w×h×d): ................ 41.0 cm × 17.5 cm × 37.0 cm
Weight
(with standard accessories): ..... 8.4 kg
Reference conditions
Reference temperature range: .. 15 C … 35 C
Reference humidity range: ........ 35 % … 65 % RH
Operation conditions
Working temperature range: ..... 0 C … 40 C
Maximum relative humidity: ...... 85 % RH (0 C … 40 C), non-condensing
Storage conditions
Temperature range: .................. -10 C … 60 C
Maximum relative humidity: ...... 90 % RH (-10 C … 40 C)
80 % RH (40 C … 60 C)
Accuracies apply for 1 year in reference conditions. Temperature coefficient outside
these limits is 0.2 % of measured value per C plus 1 digit, otherwise noted.
Fuses
Test socket protection: .............. 2 x T16 A / 250 V, 1500 A, 6.3 mm 32 mm
29
MI 3321 MultiservicerXA Main menu and test modes
PgUp (F1) / PgDown (F2)
Selects next / previous help screen.
ESC
Returns to the last test / measurement menu.
Example of help screens
4 Main menu and test modes
The MultiservicerXA instrument has a user-friendly manipulation. By pressing only a few
keys most of the actions can be done. The menu tree of the instrument has been
designed to be simple to understand and easy to operate.
The instrument can test electrical equipment in four operating modes:
- PAT testing operating mode,
- Machine testing operating mode,
- Switchgear testing operating mode,
- All tests operating mode.
4.1 Help menus
The measurement help menus are available in single and autotest modes. They can be
accessed with the key HELP before the START key is pressed to initiate the
measurement.
Help menus contain schematic diagrams for illustration of proper connection of DUT to
the PAT testing instrument.
Keys in help menu:
4.2 Instrument main menu
From the Instrument main menu four different instrument operation menus and the
General Settings menu can be set:
30
MI 3321 MultiservicerXA Main menu and test modes
Instrument main menu
/
Select one of the following menu items:
<PAT TESTING>, a group of tests intended for testing electrical devices,
see chapter 5;
<MACHINE TESTING>, a group of tests intended for testing electrical
equipment of machine, see chapter 9;
<SWITCHGEAR TESTING>, a group of tests intended for testing
switchgear units, see chapter 10;
<ALL TESTS>, all tests can be applied for testing of electrical
equipment, see chapter 11;
<GENERAL SETTINGS> the menu for general settings of the
instrument, see chapter 4.3;
ENTER
Confirms selection.
ESC
Returns to the Instrument main menu.
Setup menu
/
Select the setting to adjust or view:
<DATE/TIME>, day and time;
<LANGUAGE>, instrument language;
<PRINT HEADER>, printed header options;
Keys in instrument main menu:
Note:
The ESC key must be pressed more than once to return to Instrument main
menu from any submenu or selected function.
4.3 General settings menu
In the General settings menu the parameters of the instrument that are considered for
all operating modes, can be viewed or set.
Keys in General settings menu:
31
MI 3321 MultiservicerXA Main menu and test modes
<INSTRUMENT DATA>, various instrument settings;
<CONTRAST>, LCD contrast;
<ORIGINAL SETTINGS>, factory settings;
<SET COMMUNICATION>, communication options;
<EDIT DEVICE DATA>, data for tested equipment ;
<PASSWORD>, to access restricted options;
<RESULT>, to access menu for setting considered result.
ENTER
Confirms selection.
ESC
Returns to the Instrument main menu.
Date and time menu
/
Select the field to be changed.
/
Modify selected field.
SAVE (F1)
Confirms selection and returns to General settings menu.
UNDO (F2)
ESC
Discards modifications and returns to General settings menu.
4.3.1 Setting date and time
Selecting this option will allow the user to set the date and time of the unit. The following
menu will be displayed:
Keys in date/time menu:
Notes:
Date is attached to each PAT autotest measurement result!
Date format is DD-MM-YYYY (day–month–year).
Date entry is checked for regularity and is not accepted in case of irregular date!
4.3.2 Language selection
Selecting this option will allow the user to select the language in the instrument. The
following menu will be displayed:
32
MI 3321 MultiservicerXA Main menu and test modes
Language menu
/
Select the language.
ENTER
Confirms selection and returns to General settings menu.
ESC
Discards modifications and returns to General settings menu.
Print header menu
Editing print header
EDIT (F1)
Enters edit menu for entering print header.
ESC
Returns to General settings menu.
Alphanumeric keys
Entering header text
SAVE (F1)
Confirms selection and returns to General settings menu.
UNDO (F2)
ESC
Discards modifications and returns to General settings menu.
Keys in Language menu:
4.3.3 Print header
Selecting this option will allow the user to enter text of printing header. The print header
is appended to printout form when test results are printed using a serial printer.
Keys in print header menu:
Keys in print header edit menu:
4.3.4 Viewing of instrument data
In this menu the following instrument data are shown:
- Producer name,
- Instrument name,
- Calibration date,
- Serial number,
33
MI 3321 MultiservicerXA Main menu and test modes
Instrument data menu
MORE (F1)
Switches between multiple screens.
3Ph>Dat (F2)
Receives instrument data from 3-Phase adapter.
ENTER
ESC
Returns to General settings menu.
Contrast menu
/
Modify contrast.
SAVE (F1)
Confirms selection and returns to General settings menu.
UNDO (F2)
ESC
Discards modifications and returns to General settings menu.
- Firmware version.
Keys in instrument data menu:
Note:
Operator cannot change any instrument data!
4.3.5 Display contrast adjustment
Selecting this option will allow the user to set LCD contrast. The following menu will be
displayed:
Keys in contrast menu:
4.3.6 Reset instrument settings
In this menu the following parameters can be set to their initial values:
- All measurement parameters in single test mode,
- User defined tests are cleared,
- Custom autotest sequences are replaced by factory pre-programmed ones,
- PC baud rate is set to 115200 bps,
34
MI 3321 MultiservicerXA Main menu and test modes
Original settings menu
Y
Confirms reset to default values and returns to General settings menu.
N
Returns to General settings menu without reset.
Communication menu
/
Select the field to be changed.
ENTER
Confirms selection and opens menu of selected option.
ESC
Returns to General settings menu.
Communication settings
/
Select the proper option.
- Printer protocol is set to hardware handshaking – flow control (DTR).
The following menu is displayed:
Keys in instrument settings menu:
4.3.7 Communication settings
In this menu, the communication port and baud rate can be set for communication with
PC. Following menu will be displayed:
Keys in set communications menu:
Keys in communications port and baud rate menus:
35
MI 3321 MultiservicerXA Main menu and test modes
SAVE (F1)
Confirms selection and returns to Set communications menu.
ESC
Returns to Set communications menu without changes.
User / device data main menu
/
Select the field to be changed.
ENTER
Confirms selection and opens menu of selected item.
ESC
Returns to General settings menu.
Users submenu
/
Select the user.
ENTER
Confirms selection and returns to User / device data menu.
EDIT (F1)
Confirms selection and opens User edit menu.
ESC
Discards modifications and returns to User / device data menu.
Alphanumeric keys
Entering user name
Note:
Only one port can be active at one time.
4.3.8 Edit User / device data menu
Select User / device data in General settings menu with and keys and press
ENTER key to confirm. The User / device data menu is displayed.
Keys in user / device data menu:
4.3.8.1 Users submenu
In this menu user names for up to 15 different users can be entered, edited and
selected.
Keys in set users menu:
Keys in user edit menu:
36
MI 3321 MultiservicerXA Main menu and test modes
SAVE (F1)
Confirms entry and returns to User / device data menu.
UNDO (F2)
ESC
Discards modifications and returns to User / device data menu.
Devices submenu
/
PgUp (F2)
PgDown (F3)
Select the device.
ENTER
Confirms selection and returns to User / device data menu.
EDIT (F1)
Confirms selection and opens Device edit menu.
ESC
Discards modifications and returns to User / device data
menu.
Alphanumeric keys
Entering user name
SAVE (F1)
Confirms entry and returns to User / device data menu.
UNDO (F2)
ESC
Discards modifications and returns to User / device data menu.
4.3.8.2 Devices submenu
In this menu, default lists of device names (up to 100) can be edited.
The list can be also downloaded to/ uploaded from the PC SW PATlinkPRO.
For more information refer to chapter 8.5 Data upload / download.
Select Device in User / device data menu by and keys and press ENTER key to
confirm. The following menu is displayed:
Keys in device menu:
Keys in user edit menu:
4.3.8.3 Test sites submenu
In this menu default lists of object names (up to 100) can be edited.
The list can be also downloaded to/ uploaded from the PC SW PATlinkPRO.
For more information refer to chapter 8.5 Data upload / download.
37
MI 3321 MultiservicerXA Main menu and test modes
Test sites submenu
/
PgUp (F2)
PgDown (F3)
Select the test site.
ENTER
Confirms selection and returns to User / device data menu.
EDIT (F1)
Confirms selection and opens Test site edit menu.
ESC
Discards modifications and returns to User / device data
menu.
Alphanumeric keys
Entering test site name
SAVE (F1)
Confirms entry and returns to User / device data menu.
UNDO (F2)
ESC
Discards modifications and returns to User / device data menu.
Locations / rooms submenu
/
PgUp (F2)
PgDown (F3)
Select the location.
ENTER
Confirms selection and returns to User / device data menu.
EDIT (F1)
Confirms selection and opens Location edit menu.
ESC
Discards modifications and returns to User / device data
menu.
Keys in test sites menu:
Keys in user edit menu:
4.3.8.4 Locations submenu
In this menu default lists of location names (up to 100) can be edited.
The list can be also downloaded to/ uploaded from the PC SW PATlinkPRO.
For more information refer to chapter 8.5 Data upload / download.
Keys in device menu:
38
MI 3321 MultiservicerXA Main menu and test modes
Alphanumeric keys
Entering location name.
SAVE (F1)
Confirms entry and returns to User / device data menu.
UNDO (F2)
ESC
Discards modifications and returns to User / device data menu.
Keys in user edit menu:
4.3.9 Password
In password menu two independent passwords can be set.
Password menu
PASSWORD HV-TEST protects unauthorised access to HV-TEST function. When
correct password is entered, HV-TEST functions are unlocked until the instrument is
switched off. This password cannot be disabled and can only be reset by using “General
settings >> Original settings” option.
Note:
Password HV-TEST field is empty before first use of the instrument or after reset of
the instrument by applying original settings, but the instrument requires the
PASSWORD HV-TEST for operation with any of HV test function. For this reason,
the PASSWORD HV-TEST has to be set before first application of any HV test
function. The instrument keeps the password until it is changed or reset on applied
original settings.
PASSWORD GENERAL protects:
- Entering Edit user menu,
- Editing measurement parameters in single / autotest custom test mode,
- Deleting stored results,
- Entering Original settings menu.
In password protected actions, it is necessary to enter the PASSWORD GENERAL
before deleting or editing the protected data. The instrument requires a password and it
will not allow changes unless the correct password has been entered. This password is
disabled by default.
39
MI 3321 MultiservicerXA Main menu and test modes
Password entry menu
Alphanumeric keys
Entering password.
ENTER
Accepts the password* and returns to Password menu.
ESC
Discards modifications and returns to Password menu.
Result setting menu
Last
The last result is displayed at the end of the measurement.
Worst
The worst result during the measurement is displayed at the end of the
measurement.
Keys in password entry menu:
Please take a note of this password and keep it in a safe place.
*Notes:
If there is no password protection, the instrument will request that you enter a new
password twice, once to confirm.
If the instrument is already password protected, then the instrument will request the
old password before entering the new one twice, once to confirm.
To disable the password protection, instead of entering a new password just press
the ENTER key when asked for a new password and confirmation and the
password will be disabled.
Contact your dealer if password is forgotten.
4.3.10 Result
In this menu it can be set which result is displayed at the end of measurement
Options in Result menu:
40
MI 3321 MultiservicerXA Main menu and test modes
/
Select Last or Worst option.
SAVE (F1)
Confirms selection and returns to General settings menu.
UNDO (F2)
ESC
Discards modifications and returns to General settings menu.
Keys in Result settings menu:
Note:
The last result of Voltage, Power and HV test is displayed at the end of
measurement, regardless of settings in Result settings menu.
41
MI 3321 MultiservicerXA PAT testing operating mode
PAT testing main menu
VDE organizer menu
5 PAT testing operating mode
The PAT testing operating mode is primarily intended for periodic testing and
maintenance of portable electrical appliances/devices and welding machines. The
instrument can test devices in the following modes:
- Single test mode,
- Several autotest modes.
After the instrument is switched on, the last menu used will be displayed.
Note:
For testing 3-phases appliances and/or welding machines the 3-phase operation
mode must be enabled and the MultiservicerXA must be connected to a Metrel
A1322 or A1422 3-phase Active GT / Machine adapter (Plus).
5.1 PAT testing main menu
From the PAT testing main menu all instrument functions relevant for PAT testing can
be selected.
Select the function you want to perform by using and keys and press ENTER key
to confirm. To return to the previous menu press the ESC key.
5.2 VDE organizer menu
This menu offers creation and performing of VDE compatible test sequences. The
sequence setup and its parameters are exactly the same as suggested in the VDE
0701-0702 standard.
When an autotest sequence has been created in the VDE organizer, it can be run as an
autotest or stored in the Custom Autotest menu.
42
MI 3321 MultiservicerXA PAT testing operating mode
Autotest custom menu
– portable appliances
Autotest custom menu
– welding machines
Project autotest starting menu example
See chapter 7.1 VDE organizer for more information.
5.3 Autotest custom menu
The menu contains a list of custom prepared autosequences.
Two sets (one for portable appliances and one for welding machines) of preprogrammed often used autotest sequences are added to the list by default.
Two sets of up to 50 custom autotest sequences can be pre-programmed in this
autotest mode.
Custom autotests can be also downloaded to/ uploaded from the PC SW PATlinkPRO.
See chapter 7 Autotest sequences for detailed description about this test mode.
Note:
3-Phase adapter A1422 combined with the MultiservicerXA instrument should be
used for welding machine tests.
5.4 Project autotests menu
The Project autotest is a tool that simplifies and speeds up periodic testing of DUTs.
The main idea is to re-use known and stored data about the DUT.
See chapter 7.3 Project autotests for detailed description about this autotest mode.
5.5 Barcode / TAG menu
Barcode / TAG menu supports operation with barcodes and RFID tags.
43
MI 3321 MultiservicerXA PAT testing operating mode
Autotest barcode/ tag menu
– portable appliances
Autotest barcode menu
– welding machines
Single test menu
– portable appliances
Single test menu
– welding machines
Recall results menu
See chapter 7.4 Barcode/TAG menu for more information.
5.6 Single test menu
In single test menu individual tests can be performed. Two single test menus are
available (one for portable appliances and one for welding machines).
See chapter 6 Single test mode for detailed description about the single test mode.
Note:
3-Phase adapter A1422 combined with the MultiservicerXA instrument should be
used for welding machine tests.
5.7 Recall/ delete/ send results menu
Manipulation with stored data is allowed in this menu. Stored results can be recalled
according to DUT name and date, deleted or send to PC or printers.
44
MI 3321 MultiservicerXA PAT testing operating mode
Upload of test data menu
Setup menu
See chapters 8.2 Recalling results, 8.3 Deleting results and 8.4 Downloading and
printing results for more information.
5.8 Data upload / download menu
In this menu it is possible to upload different data from PC to the instrument:
- Stored test results and data (results, parameters, notes),
- List of default DUT and test site names,
- List of custom autosequences.
See chapter 8.5 Data upload / download for detailed description about uploading /
downloading data from or to a PC.
5.9 Setup menu
In this menu general instrument parameters specific for PAT testing mode can be set.
5.9.1 Instrument settings
When an autotest is completed, additional data about the DUT and comments can be
appended to the autotest results before saving them. In the Instrument settings
submenu, the settings as to how the data changes between tests can be controlled.
45
MI 3321 MultiservicerXA PAT testing operating mode
Instrument settings menu
- Device number,
- Test site,
- Location,
- User,
- Device name,
- Retest period
- Repairing code,
- Comments,
- Barcode systems.
The following data can be controlled between tests:
See chapter 8.6.1 Instruments settings for more information.
46
MI 3321 MultiservicerXA Single tests in PAT testing mode
Single test menu
– portable appliances
Single test menu
– welding machines
6 Single tests in PAT testing mode
In the single test mode two sets of individual tests can be performed:
- Single tests for appliances,
- Single tests for welding machines.
This is especially helpful for troubleshooting.
Notes:
Single test results cannot be saved in PAT testing operating mode.
For testing 3-phase appliances or welding machines the 3-phase operation mode
must be enabled and the MultiservicerXA must be connected to a Metrel 3-phase
adapter:
- A1322 – for 3-phase appliances,
- A1422 – for 3-phase appliances and single phase or 3-phase welding machines.
6.1 Performing measurements in single test mode
Select Single test in PAT testing main menu by using and keys and press
ENTER key to confirm. The Single test menu is displayed.
Press (F4) WELDING or APPL. to switch between the two sets of single tests (if
applicable).
In Single test menu select single test by using and keys and press ENTER key to
confirm.
Editing test parameters
Test measurement parameters of the selected single test are displayed in the top right
corner of the display.
They can be edited by pressing the EDIT(F1) button and selected with by and keys
The selected parameter is highlighted. Its value can be set by using and keys.
Note:
To keep new settings, press SAVE(F1) key.
47
MI 3321 MultiservicerXA Single tests in PAT testing mode
Earth bond menu
OUTPUT
Test current [200 mA, 10 A]
LIMIT
Maximum resistance [0.01 … 0.09 , 0.1 … 0.9 , 1 … 9 ]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, 180 s]
Measurement of earth bond resistance of class I DUT
Select the EARTH BOND function.
Set test parameters.
Connect device under test to the instrument.
Connect test lead to S/C1 output on the instrument.
Connect S/C1 lead to accessible metal parts of the device under test (see figure
above).
Press the START key for measurement.
6.2 Measurements – Single tests for appliances
6.2.1 Earth bond resistance
This test ensures that the connections between the protective conductor terminal in the
mains plug of the DUT and earthed accessible conductive parts of the DUT (metal
housing) are satisfactory and of sufficiently low resistance. This test has to be
performed on Class 1 (earthed) DUT.
The instrument measures the resistance between mains test socket‘s PE terminal/ PE
terminal (only if test current of 200 mA is set) and S/C1 terminal.
Test parameters for earth bond resistance measurement
Test circuit for earth bond resistance measurement
Earth bond resistance measurement procedure
48
MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of earth bond resistance measurement results
Displayed result:
Main result ............. earth bond resistance
Notes:
Consider displayed warnings before starting measurement!
HW 4.x or higher :
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
6.2.1.1 Compensation of test leads resistance
Test leads compensation is required to eliminate the influence of test leads resistance
and instrument’s internal resistance. If a compensation value is stored this is indicated
in the message C√.
Compensation of test leads resistance procedure
Select the Earth Bond function.
Set test parameters.
Connect S/C1 test probe to the instrument and short it with PE pin of test socket.
Press the CAL (F3) key for measurement.
If the calibration was performed successfully, C√ is displayed.
Notes:
5.00 is the limit value for resistance compensation. If the resistance is higher
then the calibration value is reset to the default value and the compensation
message disappears.
Both 200 mA and 10 A earth bond functions are compensated at the same time.
The lead compensation is very important to obtain correct results especially if long
test leads are used.
6.2.2 Insulation resistance
The insulation resistance test checks the resistance between live conductors and
earthed (or isolated) accessible metal parts of an DUT. This test can disclose faults
caused by pollution, moisture, deterioration of insulation metal etc.
The instrument measures the insulation resistance between:
- Mains test socket (L+N) and PE / (S/C1) test terminals, and
- LN and PE / (S/C1) test outputs.
49
MI 3321 MultiservicerXA Single tests in PAT testing mode
Insulation menu
OUTPUT
Test voltage [250 V, 500 V]
LIMIT
Minimum resistance [0.10 M, 0.30 M, 0.50 M, 1.00 M, 2.00
M, 4.00 M, 7.00 M, 10.00 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Measurement of insulation resistance of Class I DUT
Measurement of insulation resistance of fixed installed DUTs of Class I
Select the Insulation function.
Set test parameters.
This function is primarily intended for testing Class I DUTs.
Test parameters for insulation resistance measurement
Test circuits for insulation resistance measurement
Insulation resistance measurement procedure
50
MI 3321 MultiservicerXA Single tests in PAT testing mode
Connect device under test to the instrument (see figures above).
For fixed equipment:
Disconnect mains supply of the fixed equipment;
Connect LN test socket of the instrument to L/N terminals of the fixed equipment;
Connect PE test socket of the instrument to metallic enclosure of the fixed
equipment.
Press the START key for measurement.
Examples of insulation resistance measurement results
Insulation S. menu
Displayed results:
Main result ............. Insulation resistance
Notes:
Leakage currents into the S/C1 input will influence insulation resistance
measurement.
When S/C1 probe is connected during the test then the current through it is also
considered.
The DUT should be de-energized before the measurement!
Consider any warning on the display before starting the measurement!
Do not touch or disconnect the DUT during the measurement or before it is fully
discharged! The message »Discharging…« will be displayed while the voltage on
the DUT is higher than 20 V!
6.2.3 Insulation resistance - S
The insulation resistance test checks the resistance between live conductors and
isolated accessible metal parts of DUT. This test can disclose faults caused by pollution,
moisture, deterioration of insulation metal etc.
The instrument measures the insulation resistance between:
- Main test socket (L+N) and S/C1 test terminals, and
- LN and S/C1 test sockets.
This function is primarily intended for testing Class II DUTs and Class II parts of Class I
DUTs.
51
MI 3321 MultiservicerXA Single tests in PAT testing mode
OUTPUT
Test voltage [250 V, 500 V]
LIMIT
Minimum resistance [0.10 M, 0.25 M, 0.50 M, 1.00 M, 2.00
M, 4.00 M, 7.00 M, 10.00 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Measurement of insulation resistance of class II DUT
Measurement of insulation resistance of accessible isolated conductive parts of fixed
installed DUTs
Select the Insulation resistance S function.
Set test parameters.
Connect device under test to the instrument (see figures above).
Connect S/C1 probe to accessible conductive parts of the DUT
For fixed equipment:
Disconnect mains supply of the fixed equipment;
Connect LN test socket of the instrument to L/N terminals of the fixed equipment;
Connect S/C1 probe to accessible conductive parts of the fixed installed DUT
Press the START key for measurement.
Test parameters for insulation resistance measurement
Test circuits for Insulation - S resistance measurement
Insulation resistance S measurement procedure
52
MI 3321 MultiservicerXA Single tests in PAT testing mode
Example of insulation S. resistance measurement results
Sub leakage menu
OUTPUT
Test voltage [40 V]
LIMIT
Maximum current [0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA,
2.50 mA, 3.50 mA, 4.00 mA, 4.50 mA, 5.00 mA, 5.50 mA, 6.00 mA,
7.00 mA, 8.00 mA, 9.00 mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Displayed results:
Main result ............. Insulation resistance (LN – S)
Notes:
If a Class I device is connected to the mains test socket the currents flowing
through the PE terminal will not be considered.
The DUT should be de-energized before the measurement!
Consider any warning on the display before starting the measurement!
Do not touch/ disconnect the DUT during the measurement or before it is fully
discharged! The message »Discharging…« will be displayed while the voltage on
the DUT is higher than 20 V!
6.2.4 Substitute leakage current
Leakage currents between live conductors and accessible metal parts (housing, screws,
handles etc.) are checked with this test. Capacitive leakage paths are included in the
result too. The test measures the current flowing at a test voltage of 40 VAC and the
result is scaled to the value of a nominal mains supply voltage of 230 VAC.
The instrument measures the insulation resistance between:
- Main test socket (L+N) and PE / (S/C1) test terminals, and
- LN and PE / (S/C1) test sockets.
This function is primarily intended for testing Class I DUTs.
Test parameters for substitute leakage current measurement
53
MI 3321 MultiservicerXA Single tests in PAT testing mode
Measurement of substitute leakage current of class I DUT
Measurement of substitute leakage current of fixed installed DUTs of class I
Select the Substitute leakage function.
Set test parameters.
Connect device under test to the instrument (see figures above).
For fixed equipment:
Disconnect mains supply of the fixed equipment;
Connect LN test socket of the instrument to L/N terminals of the fixed equipment;
Connect PE test socket of the instrument to metallic enclosure of the fixed
equipment.
Press the START key for measurement.
Example of substitute leakage current measurement results
Test circuits for substitute leakage current measurement
Substitute leakage measurement procedure
54
MI 3321 MultiservicerXA Single tests in PAT testing mode
Sub leakage S menu
OUTPUT
Test voltage [40 V]
LIMIT
Maximum current [0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA,
2.00 mA, 2.50 mA, 3.00 mA, 3.50 mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Displayed results:
Main result ............. substitute leakage current
Notes:
Consider any displayed warning before starting measurement!
When S/C1 probe is connected during the test then the current through it is also
considered.
Substitute leakage current may differ substantially from that of conventional
leakage current test because of the way the test is performed. For example, the
difference in both leakage measurements will be affected by the presence of
neutral to earth noise suppression capacitors.
6.2.5 Substitute leakage - S
Leakage currents between live conductors and isolated accessible metal parts (screws,
handles etc.) are checked with this test. Capacitive leakage paths are included in the
result too. The test measures the current flowing at a test voltage of 40 V AC and the
result is scaled to the value of a nominal mains supply voltage of 230 V AC.
The instrument measures the insulation resistance between:
- Main test socket (L+N) and S/C1 test terminals, and
- LN and S/C1 test sockets.
This function is primarily intended for testing Class II DUTs and Class II parts of Class I
DUTs.
Test parameters for substitute leakage S current measurement
Test circuits for substitute leakage S measurement
55
MI 3321 MultiservicerXA Single tests in PAT testing mode
Measurement of substitute leakage current of class II DUT
Measurement of substitute leakage of accessible isolated conductive parts of fixed
installed DUTs
Select the Substitute leakage S function.
Set test parameters.
Connect device under test to the instrument (see figures above).
Connect S/C1 probe to accessible conductive parts of the DUT.
For fixed equipment:
Disconnect mains supply of the fixed equipment;
Connect LN test socket of the instrument to L/N terminals of the fixed equipment;
Connect S/C1 probe to accessible conductive parts of the fixed installed DUT
Press the START key for measurement.
Example of substitute leakage S current measurement results
Insulation resistance S measurement procedure
Displayed results:
Main result ............. substitute leakage current LN-S
56
MI 3321 MultiservicerXA Single tests in PAT testing mode
Differential leakage current menu
OUTPUT
Test voltage [230 V]
LIMIT
Maximum current [0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA,
2.50 mA, 3.50 mA, 4.00 mA, 4.50 mA, 5.00 mA, 5.50 mA, 6.00 mA, 7.00
mA, 8.00 mA, 9.00 mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Measuring of differential current
Notes:
Consider any displayed warning before starting measurement!
If a Class I device is connected to the mains test socket the currents flowing
through the PE terminal will not be considered.
6.2.6 Differential leakage current
The purpose of this test is to determine the sum of all leakages flowing from the live
conductor to the earth. Because the differential method for determining leakage current
is used the full and true DUT leakage current is always measured, even when parallel
current paths to ground exist in the DUT.
Test parameters for differential leakage current measurement
Test circuit for differential current measurement
57
MI 3321 MultiservicerXA Single tests in PAT testing mode
Select the Differential function.
Set test parameters.
Connect device under test to the instrument (see figure above).
Press the START key for measurement.
Examples of differential current measurement result
Touch leakage menu
OUTPUT
System voltage [230 V]
LIMIT
Maximum current [0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA, 2.00
mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Differential current measurement procedure
Displayed results:
Main result ............. differential leakage current
Notes:
During the test, a mains voltage is connected to the DUT. If DUT contains moving
parts, make sure that it is safely mounted or protected to prevent possible danger
to the operator or damage to the DUT or surrounding environment!
Consider any displayed warning before starting measurement!
The instrument automatically changes L and N polarity of connected DUT during
the test.
6.2.7 Touch leakage current
This test determines the current that would flow if a person touches accessible
conductive parts of the DUT.
The instrument measures the leakage current flowing through the S/C1 probe into earth.
The DUT can be powered from the mains test socket or directly from the installation
(fixed installed equipment).
Test parameters for touch leakage current measurement
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Measurement of touch leakage current
Measurement of touch leakage current on a fixed installed DUT
Select the Touch leakage function.
Set test parameters.
Connect S/C1 probe to accessible conductive parts of the DUT (see figures
above).
For Portable appliance/device:
Connect device under test to the instrument.
For fixed equipment:
Power on the fixed equipment;
Press the START key for measurement.
Examples of touch leakage current measurement results
Test circuits for touch leakage current measurement
Touch leakage current measurement procedure
Displayed results:
Main result ............. touch leakage current
59
MI 3321 MultiservicerXA Single tests in PAT testing mode
Polarity test menu
TEST
Type of polarity test [normal, active]
Polarity test of IEC cord
Select the Polarity test function.
Select the normal test sub-function.
Connect tested IEC cord to the instrument (see figure above).
Press the START key for measurement.
Notes:
During the test, a mains voltage is connected to the DUT. If DUT contains moving
parts, make sure that it is safely mounted or protected to prevent possible danger
to the operator or damage to the DUT or surrounding environment!
Consider any displayed warning before starting measurement!
The instrument automatically changes L and N polarity of connected DUT during
the test.
6.2.8 Polarity test
This test checks the polarity of a supply cords.
In the Normal mode the test is performed with internal low voltage sources.
The Active mode is intended to test cords/ leads with integrated RCD protection. Mains
voltage is applied to the tested cord in order to operate the RCD during the test.
The following faults can be detected: L open, N open, PE open, L-N crossed, L-PE
crossed, N-PE crossed, L-N shorted, L-PE shorted, N-PE shorted, multiple faults.
Test parameters for polarity test
Test circuit for polarity test
Polarity - Standard test
procedure
60
MI 3321 MultiservicerXA Single tests in PAT testing mode
Select the Polarity test function.
Select the active test sub-function.
Connect tested IEC cord with RCD protection to the 3 Phase adapter A1322 /
A1422 (see A 1322 / A 1422 Instruction manual).
Press the START key for measurement.
Switch ON the appliance (RCD) within 5 seconds and follow the instructions on the
display.
Switch ON the RCD again if necessary.
Examples of polarity test result
Polarity - Active test
procedure
Displayed results:
Main result ............. PASS/ FAIL, description of fault
Notes:
Consider any displayed warning before starting test!
Active polarity test can only be performed with 3 Phase adapter (A1322 / A1422).
Active polarity test is intended for testing RCD equipped cords where RCD must be
supplied for proper operation.
In the active polarity test a switchover between phase and neutral at the mains test
socket is performed during the test. Although the switchover time is short it could
happen that the RCD switches off during the switchover. In this case the warning
‘SWITCH ON THE APPLIANCE’ is displayed again and the RCD must be reswitched ON.
6.2.9 Clamp current test
This function enables the measurement of AC currents in a wide range from 1 mA up to
25 A with current clamps. Typical applications are:
- measuring PE leakage currents through PE conductor in permanently installed
DUTs,
- measuring load currents in permanently installed DUTs,
- measuring differential leakage currents in permanently installed DUTs.
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Clamp current menu
LIMIT
Maximum current [0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA, 2.25
mA, 2.50 mA, 3.00 mA, 3.50 mA, 5.00 mA, 9.00 mA]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Connecting current clamp to the instrument
Select the Clamp current function.
Set test parameters.
Connect the current clamp to the instrument (see figure above).
Embrace wire(s) that has to be measured with current clamp.
Press the START key for measurement.
Examples of clamp current measurement result
Test parameters for clamp current measurement
Test circuit for clamp current measurement
Clamp current measurement procedure
Displayed results:
Main result ............. clamp current
62
MI 3321 MultiservicerXA Single tests in PAT testing mode
IN
Rated PRCD residual current [10 mA, 15 mA, 30 mA]
MODE
Type of PRCD test [single, auto]
Multi
Actual test current IN [x ½, x 1, x 5]
Phase
Starting angle [0, 180, (0,180)]
PRCD test current starting polarities
½I
N
*)
IN
5IN
General RCDs (non-delayed)
t > 300 ms
t < 300 ms
t < 40 ms
Standard
½IN
IN
5IN
EN 61540
300 ms
300 ms
40 ms
Notes:
When measuring leakage currents, the neighboring magnetic fields and capacitive
coupling (especially from the L and N conductors) can disturb the results. It is
recommended that the clamp is as close as possible to the grounded surface and
away from wires and other objects under voltage or carrying current.
METREL offers high quality current clamps for this application.
Green socket is intended for current clamp shield terminal, if exists. This will
improve measurement of leakage current. The socket is connected to internal
grounding system and through this to PE.
6.2.10 PRCD test
The purpose of this test is to ensure the proper operation of residual current devices
built into a DUTs and portable residual current devices. Trip-out time measurement
verifies the sensitivity of a PRCD at selected residual currents.
Warning!
MI 3321 checks voltages on TP1 before running test and disables test in
case the hazardous live voltage is detected on TP1 PE. In this case,
immediately remove supply from test circuit, find and eliminate problem
before any other activity!
Test parameters for PRCD test
If Single mode is selected:
Trip-out time limits
Trip-out times according to EN 61540:
*)
Minimum test period for current of ½IN, RCD shall not trip-out.
Maximum test times related to selected test current for general (non-delayed) RCD
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Testing of portable RCD (PRCD)
Testing of portable RCD (PRCD) using optional A 1447 adapter
PRCD single test menu
PRCD autotest menu
Select the PRCD test function.
Select Single test mode.
Set test parameters.
Connect tested PRCD/ device to an external voltage socket (see figure above).
Depending on the type of PRCD, it may be necessary to manually switch the
PRCD on.
Circuits for testing PRCD
6.2.10.1 PRCD single test Trip-out time measurement procedure
64
MI 3321 MultiservicerXA Single tests in PAT testing mode
Connect test lead toTP1 test socket of the instrument and the PRCD’s output.
Press the START key to perform measurement.
If both current polarities are selected:
Reactivate tested PRCD
Press the START key to perform measurement with opposite current polarity.
Examples of PRCD test result
PRCD Autotest steps
Notes
Select the PRCD test function.
Set Auto test mode.
Select test parameters.
Connect tested PRCD device to an external voltage
socket (see figure above). Depending on the type of
PRCD, it may be necessary to manually switch the
PRCD on.
Connect test lead toTP1 test socket of the instrument
and the PRCD’s output.
Press the START key.
Start of test
Test with IN, 0 (step 1).
PRCD should trip-out
Re-activate PRCD.
Test with IN, 180 (step 2).
PRCD should trip-out
Re-activate PRCD.
Test with 5IN, 0 (step 3).
PRCD should trip-out
Re-activate PRCD.
Test with 5IN, 180 (step 4).
PRCD should trip-out
Re-activate PRCD.
Test with ½IN, 0 (step 5).
PRCD should not trip-out
Test with ½IN, 180 (step 6).
PRCD should not trip-out
End of test.
Displayed results:
Main result ............. last measured results
Sub-results ............ all results are displayed as sub-results
Ul-pe ...................... voltage U
L-PE
6.2.10.2 Automatic PRCD test
PRCD autotest function is intended to perform a complete PRCD analysis. (trip-out
times at different residual currents and current phases) .
PRCD autotest procedure
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Step 1
Step 2
Step 3
Step 4
Step 5 and
Step 6
Individual steps in PRCD autotest
The test passes if the PRCD:
- Does not trip out at ½IN tests,
- Trips inside predefined time limits at IN, and 5IN tests.
Displayed results:
Main result ............. last measured results
Sub-results ............ all results are displayed as sub-results
Ul-pe ...................... voltage UL-PE
Notes:
Consider any displayed warning before starting measurement!
For DUTs with integrated RCD the housing must be opened to access the RCD’s L
output terminal (this should only be performed by a competent engineer).
Mains voltage is applied to the PRCD under test. Do not touch the equipment
under test or the test leads during the test!
HW 4.x or higher:
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Power/functional test menu
OUTPUT
System voltage [230 V]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Functional test
Select the Functional test function.
Set measuring time.
Connect tested DUT to the instrument (see figure above).
Press the START key for measurement.
Example of apparent power measurement result
6.2.11 Power / Functional test
The DUT’s power consumption is measured in this test. The apparent power is an
useful indication of proper operation of the DUT.
Test parameters for the Power / Functional test
Circuit for the functional test
Functional test
procedure
Displayed results:
Main result ............. apparent power
67
MI 3321 MultiservicerXA Single tests in PAT testing mode
Continuity menu
OUTPUT
Test current [200 mA, 10 A]
LIMIT
Maximum resistance [0.10 … 0.90 , 1.00 ]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, 180 s]
Notes:
During the test, a mains voltage is connected to the DUT. If DUT contains moving
parts, make sure that it is safely mounted or protected to prevent possible danger
to the operator or damage to the DUT or surrounding environment!
Consider any displayed warning before starting measurement!
6.3 Measurements – Single tests for welding machines
Note:
For testing welding machines the 3-phase operation mode must be enabled and
the MultiservicerXA must be connected to a METREL 3-phase adapter (A1422).
6.3.1 Continuity of the protective circuit
This test ensures that the connections between the protective conductor terminal in the
mains plug of the DUT and earthed accessible conductive parts of the DUT (metal
housing) are satisfactory and of sufficiently low resistance.
The instrument measures:
- the resistance between mains test socket‘s PE terminal/ PE terminal (only if test
current of 200 mA is set) and S/C1 terminal.
- the resistance between mains test socket‘s PE terminal on 3-phase adapter and
S/C1 terminal on MultiservicerXA.
Test parameters for continuity measurement
Test circuit and measurement procedure for continuity measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Continuity of the protective circuit in 3-phase adapter
Instruction manual.
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of continuity measurement results
Insulation LN-PE menu
OUTPUT
Test voltage [500 V]
LIMIT
Minimum resistance [2.50 M, 5.00 M, 10.00 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Result screens:
Displayed results:
Main result ............. resistance
Note:
Consider displayed warnings before starting measurement!
For compensation of test leads Description in chapter 6.2.1.1 Compensation of test
leads resistance can be used as reference.
6.3.2 Insulation resistance (supply circuit to protective circuit)
The insulation resistance test checks the resistance between the primary supply circuit
and the protective circuit (protective earth) of the welding machine.
The instrument measures the insulation resistance between:
- mains test socket‘s live terminals and mains test socket‘s PE terminal on 3-phase
adapter (A1422).
Test parameters for insulation resistance LN-PE measurement
Test circuit and measurement procedure for insulation resistance LN-PE
measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (supply circuit to protective circuit)
in 3-phase adapter Instruction manual.
69
MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of Insulation LN-PE measurement results
Insulation W-PE menu
OUTPUT
Test voltage [500 V]
LIMIT
Minimum resistance [2.50 M, 5.00 M, 10.00 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Result screens:
Displayed results:
Main result ............. Insulation resistance LN-PE
Note:
Consider displayed warnings before starting measurement!
6.3.3 Insulation resistance (welding circuit to protective circuit)
The insulation resistance test checks the resistance between the welding circuit
(outputs) and the protective circuit (protective earth) of the welding machine.
The instrument measures the insulation resistance between:
- mains test socket‘s PE terminal and W1/ W2_TOUCH terminals on 3-phase
adapter (A1422).
Test parameters for insulation resistance W-PE measurement
Test circuit and measurement procedure for insulation resistance W-PE
measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (welding circuit to protective circuit)
in 3-phase adapter Instruction manual.
70
MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of Insulation W-PE measurement results
Insulation LN-W menu
OUTPUT
Test voltage [500 V]
LIMIT
Minimum resistance [5.00 M, 10.0 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Result screens:
Displayed results:
Main result ............. Insulation resistance W-PE
Note:
Consider displayed warnings before starting measurement!
6.3.4 Insulation resistance (supply circuit to welding circuit)
The insulation resistance test checks the resistance between primary supply circuit and
the welding circuit (outputs) of the welding machine.
The instrument measures the insulation resistance between:
- mains test socket‘s live terminals and W1/ W2_TOUCH terminals on 3-phase
adapter (A1422).
Test parameters for insulation resistance LN-W measurement
Test circuit and measurement procedure for insulation resistance LN-W
measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (supply circuit to welding circuit) in
3-phase adapter Instruction manual.
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of Insulation LN-W measurement results
Insulation LN-P menu
OUTPUT
Test voltage [500 V]
LIMIT
Minimum resistance [5.00 M, 10.0 M, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
Result screens:
Displayed results:
Main result ............. Insulation resistance LN-W
Note:
Consider displayed warnings before starting measurement!
6.3.5 Insulation resistance (supply circuit to accessible surfaces of class II equipment)
The insulation resistance test checks the resistance between primary supply circuit and
the isolated accessible conductive parts of the welding machine.
The instrument measures the insulation resistance between:
- mains test socket‘s live terminals on 3-phase instrument and the S/C1 terminal
on MultiservicerXA.
Test parameters for insulation resistance LN-P measurement
Test circuit and measurement procedure for insulation resistance LN-P
measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (supply circuit of class II to
accessible surfaces) in 3-phase adapter Instruction manual.
72
MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of Insulation LN-P measurement results
Welding circuit leakage current menu
LIMIT
Maximum current [3.50 mA, 5.00 mA, 10.00 mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
CHG-OFF
Change between L-N on a single phase test socket of 3-phase adapter is
disabled.
CHG-ON
Change between L-N on a single phase test socket of 3-phase adapter is
enabled.
Result screens:
Displayed results:
Main result ............. Insulation resistance LN-P
Note:
Consider displayed warnings before starting measurement!
6.3.6 Welding circuit leakage current
The purpose of this test is to determine the sum of all leakage currents flowing from the
welding outputs W1 or W2 to earth.
Test parameters for welding circuit current measurement
Key (F3)
Test circuit and measurement procedure for welding circuit leakage current
measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Welding circuit leakage current in 3-phase adapter
Instruction manual.
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MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of welding circuit leakage current measurement results
Primary leakage current menu
LIMIT
Maximum current [3.50 mA, 5.00 mA, 10.00 mA, none]
TIME
Measuring time [5 s, 10 s, 30 s, 60 s, 120 s, none]
CHG-OFF
Change between L-N on a single phase test socket of 3-phase adapter is
disabled.
CHG-ON
Change between L-N on a single phase test socket of 3-phase adapter is
enabled.
Displayed results:
Main result ............. welding circuit leakage current
Notes:
During the test, a mains voltage is connected to the welding machine. Consider
safety precautions.
Consider any displayed warning before starting measurement!
6.3.7 Primary leakage current
The purpose of this test is to determine the sum of all leakage currents flowing from the
primary circuit to earth. Because the differential measuring method for determining
leakage current is used the full and true DUT leakage current is always measured, even
when parallel current paths to ground exist in the DUT.
Test parameters for primary leakage current measurement
Key (F3)
Test circuit and measurement procedure for primary leakage current
measurement
74
MI 3321 MultiservicerXA Single tests in PAT testing mode
Examples of primary leakage current measurement results
No load voltage menu
VOLTAGE
[AC, DC]
LIMIT AC
Maximum voltage:
68 V peak and 48 V r.m.s.
113 V peak and 80 V r.m.s.,
141 V peak and 100 V r.m.s.,
none.
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Primary leakage current in 3-phase adapter instruction
manual.
Displayed results:
Main result ............. primary leakage current
Notes:
During the test, a mains voltage is connected to the welding machine. Consider
safety precautions.
Consider any displayed warning before starting measurement!
6.3.8 Touch leakage current
Description in chapter 6.2.7 Touch Leakage can be used as reference.
6.3.9 No load voltage
The purpose of this test is to check that the voltage on the welding outputs doesn’t
exceed the safety limits.
Test parameters for No load voltage measurement
75
MI 3321 MultiservicerXA Single tests in PAT testing mode
LIMIT DC
Maximum voltage:
113 Vpeak,
141 Vpeak,
None.
Examples of No load voltage measurement results
Test circuit and measurement procedure for No load voltage measurement
For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph No load voltage in 3-phase adapter instruction manual.
Displayed results:
Main result ............. no load a.c. or d.c. peak voltage
Sub-result…………. no load r.m.s. voltage
Notes:
During the test, a mains voltage is connected to the welding machine. Consider
safety precautions.
Consider any displayed warning before starting measurement!
6.3.10 Clamp current test
Description in chapter 6.2.9 Clamp current test can be used as reference.
6.3.11 Functional test
Descriptions in chapter 6.2.11 Power/ Functional tests can be used as reference.
76
MI 3321 MultiservicerXA Autotest sequences
7 Autotest sequences
Autotest is the fastest and easiest way to test DUTs. During the autotest
preprogrammed measurements runs automatically in a sequential way. The complete
autotest results can be stored together with their associated DUT name and all related
information.
7.1 VDE organizer – general menu
VDE organizer is a configuration tool for performing VDE 0701-0702 compatible device
test sequences.
The instrument selects the appropriate test sequence and parameters on base of
entered DUT data (class, accessible conductive parts, nominal power etc).
The test sequence is built up according to the flowchart below.
In addition tests for RCDs can be added to the sequence.
77
MI 3321 MultiservicerXA Autotest sequences
ACMP = accessible conductive part separated from earth
With the VDE organizer any VDE 0701-0702 compatible test sequence can be created.
The sequences cover virtually any maintenance or periodic test, regardless of DUT
type, safety class, supply cord length, fuse type, etc.
All limits and tests comply with the currently valid VDE standards and regulations. In
case of any changes, a firmware upgrade will be available.
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MI 3321 MultiservicerXA Autotest sequences
Example of VDE organizer screen
/
Select organizer item.
/
Set parameter in selected (highlighted) item.
ESC
Returns to previous menu.
VIEW (F1)
Enters View (test sequence) menu.
START
Starts automatic sequence as currently set in VDE organizer.
Refer to chapter 7.5 Performing autotest sequences for more information.
VDE organizer view menu
/
Select test to be viewed.
START
Starts automatic sequence as currently set in VDE organizer.
Refer to chapter 7.5 Performing autotest sequences for more
information.
SAVE AS (F3)
Opens dialog for saving currently set sequence as a custom autotest.
BACK (F1)
Returns to mains VDE organizer menu.
ESC
Returns to previous menu.
7.1.1 VDE organizer operation
Select VDE Organizer in PAT testing main menu.
Keys:
In the View menu the parameters of the selected measurement can be viewed.
Keys in View menu:
Note:
HW 4.x or higher :
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
79
MI 3321 MultiservicerXA Autotest sequences
Type: flatiron ABC
Un 230V, 50Hz, 1000VA:
Displayed item
Activity
1
Standard: VDE
Information that a test acc. to VDE 07010702 will be set.
2
DUT class: 1
Selection of DUT safety class:
- Select Class 1.
3
Visual test
Information that visual test will be included
in the VDE / Class1 procedure.
4
Accessible conductive parts? YES
Question if there is an isolated conductive
part on the DUT:
- Confirm with yes.
5
Cord length (Earth bond)
L: < 0.3 Ω/<=5 m
Selection of Earth bond limit value on base
of known supply cable length:
- Select appropriate length.
6
Insulation test applicable? YES
Question if insulation test is applicable:
- Confirm with yes.
Insulation and substitute leakage
measurements will be included in the test
sequence with this confirmation.
7
Insulation test
Heating elements L: >0.3 MΩ
Classification of DUT:
- Classify the iron as a standard DUT.
8
Insulation test
Accessible cond. Parts L: >2.0 M
Information that insulation resistance
measurement of Class 2 parts will be
included in the (VDE / Class1 / with isolated
conductive parts) test procedure.
9
Leakage test method:
Leakage
Selection of leakage current test method:
- Select substitute leakage measurement.
10
Limit / Device type
General device L < 3.5 mA
Classify the iron as an standard DUT with
power <3.5 kW.
11
Touch leakage method: Substitute
leakage
Limit < 0.5 mA
Information that substitute leakage current
measurement class 2 parts will be included
in the (VDE / Class1 / with isolated
conductive parts) test procedure.
7.1.2 Example of creating a test sequence with VDE organizer
A periodic test of an iron will be performed.
The iron can be classified as followed:
- For a periodic testing a VDE 0701-0702 test is relevant.
- The iron can be classified as a Class I DUT with isolated metal part and short
supply cord.
Example of test sequence configuration:
80
MI 3321 MultiservicerXA Autotest sequences
Custom autotest menu
– appliances
Custom autotest menu
– welding machines
/
Selects the custom autotest.
VIEW (F1)
Opens View menu for viewing details of selected test sequence
DELETE (F3)
Removes selected test, see chapter 7.2.1 Deleting an existing custom
test sequence.
APPL. /
WELDING (F4)
Switches between the two sets of custom autotests (if applicable).
START
Starts the selected autotest. See chapter 7.5 Performing autotest
sequences.
ESC
Returns to Main menu.
7.2 Custom autotests
In autotest custom menu setting and editing user-defined autotest procedures is
allowed. Two sets (one for portable appliances and one for welding machines) of up to
50 custom autotest sequences can be pre-programmed in this autotest mode.
The most often used autotest sequences are added to the list by default.
The sequences can be also uploaded from the PC software PATLink PRO. Refer to
chapter 8.5 Data upload / download for more information.
The pre-programmed sequences can be restored to default settings by selecting
Original settings in General settings menu.
Select Custom Autotest in PAT testing main menu.
Keys:
Notes:
For testing welding machines the 3 phase operation mode must be enabled and
the MultiservicerXA must be connected to a METREL 3-phase adapter (A1422).
See 3-phase adapter (A1322 / A1422) Instruction manual for more information.
If more than 50 autotests are saved, »Out of memory« message is displayed.
HW 4.x or higher :
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
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MI 3321 MultiservicerXA Autotest sequences
Delete selected custom autotest sequence
Y/ N
Confirms or rejects deleting of selected custom autotest sequence.
Any other key
Return back to custom autotest menu without changes.
View setup of selected custom autotest
BACK (F1)
Returns back to custom autotest main menu.
SAVE (F2)
Stores test sequence under the same name.
SAVE AS (F3)
Stores test sequence under a new name.
EDIT (F4)
Opens menu for modifying parameters of selected test function.
/
Select test function in the sequence.
START
Starts running the selected autotest. See chapters 7.5 Performing
autotest sequences – appliances or 6.6 Performing autotest
sequences – welding machines.
ESC
Returns back to custom autotest menu.
7.2.1 Deleting an existing custom test sequence
Keys:
Note:
First custom autotest from the list cannot be deleted!
7.2.2 Viewing, modifying and saving an custom autotest
An existing custom autotest sequence can be viewed, modified and stored. These
functionalities are available in the Custom autotest view menu.
Keys in custom autotest sequence view mode:
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MI 3321 MultiservicerXA Autotest sequences
Save option
Save as option
Autotest custom Save menus
/
Select character in line.
Alphanumeric
Enters character.
SHIFT+ Alphanumeric
Enters small letter or special character.
Deletes character left to cursor.
SAVE (F1)
Confirms saving custom autotest sequence under entered
name.
UNDO (F2)
Cancels saving.
ESC
Returns back to custom autotest menu.
Modification parameters of selected test function
/
Select the parameter.
/
Change the value of selected parameter (highlighted).
CONFIRM (F1)
Accepts modified function and returns to the view of selected test
sequence.
ESC
Returns to the view of selected test sequence.
disabled
Test is not selected in this custom autotest.
single
Selected test is performed once inside the custom autotest.
continuous
Selected test is performed more than once inside the custom autotest.
Keys:
Modification of an autotest sequence
Press EDIT (F4) key in the View menu to modify selected function.
Keys:
Following modes can be set:
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MI 3321 MultiservicerXA Autotest sequences
Project autotests main menu
7.3 Project autotests
The Project autotests is an unique tool that dramatically simplifies and speeds up
repeated (periodic) testing of DUTs.
The main idea is to re-use known stored data (either in instrument or on a PC) of the
tested DUT. The following data can be recalled from the instrument’s memory and reused:
Test sequence
If the sequence has not changed (this is usually the situation) the user does not need to
care about setting the right test sequence and parameters.
DUT data
ID number, names, descriptions, addresses, comments are not needed to be re-entered
again. Old data are offered by default.
Old test results
New Project Autotest test results can be compared with previous results. The
instrument automatically calculates the trends for each measurement.
Note:
If the test results are close to the limit they should be compared with old test
results. If the trends are deteriorating, the safety of the DUT and the time between
tests should be reassessed. If the results stay stable the DUT can generally be
treated as safe.
Old test results can be uploaded from a PC back to the instrument. This brings further
advantages:
Old test results are not occupying the instrument’s memory and can be temporarily
uploaded only for the purpose of re-testing,
Test results and DUT data can be moved / shared among different test
instruments,
DUT data can be pre-entered on the computer and then sent to the instrument.
7.3.1 Selecting a project autotest
The first step when performing project autotests is to recall the appropriate stored DUT
data from the instruments memory. The procedure is similar as if test results are to be
recalled from the instrument’s memory.
In the PAT testing main menu select Project autotests by using and keys and
press ENTER key to confirm. Search project autotest menu will be displayed.
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MI 3321 MultiservicerXA Autotest sequences
- Device number,
- User,
- Test site,
- Location,
- Date from and date to.
/
Select filter line.
/ , Alphanumeric
Edits selected filter.
FIND (F1)
Starts search after filters are set correctly.
UNDO (F2)
Undo latest change.
TYPE (F3)
Selects parameter line type.
ESC
Returns to Main menu.
Project autotest result menu
When searching for stored autotest results the following filters can be used to narrow
the hits:
Keys:
Notes:
To change the selected parameter line type, press the TYPE (F3) key and the
»parameter type« will become highlighted (e.g. DUT). The keys and can then
be used to change the parameter type and by pressing ENTER key the choice can
be confirmed. Once the parameter types have been set up, the data required to
filter the files can be inserted. Filter information can be inserted via the
alphanumeric keypad or, in some filter fields such as user, can also be selected
from a predefined list by pressing the LIST (F4) key. The DUT number field can
also be read using a barcode reader.
By placing a »*« (shift + “2”) in a particular field, tells the instrument not to search
the associated filter field. When searching, the instrument will therefore ignore data
in this parameter and go on to find all the DUTs that conform to data placed in the
other filter fields.
To find all stored results, enter »*« in the all fields (excluding DATE where the
correct from and to dates must be entered).
If the search filters are set up correctly and the DUTs exist in the units memory, the
Project autotests result menu will be displayed.
While recalling stored results, the instrument shows a bar graph and a ratio of files
found compared to files stored in memory (e.g. 7/11 implies 7 results have been found
to meet the filter criteria out of a potential 11 results stored in the flash memory).
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MI 3321 MultiservicerXA Autotest sequences
/
Select the DUT that should be retested.
PgUp (F1)
PgDown (F2)
ENTER
Recalls autotest project results for selected DUT.
START
Starts running new autotest for selected DUT, see 7.3.2 Starting a
project autotest
ESC
Returns to Main menu.
PC
The stored DUT data was uploaded from PC
PC
The stored DUT data was uploaded from PC and has been retested
I
The stored DUT data was performed with the instrument and stored.
I
The stored DUT data was performed with the instrument and stored and has
been retested.
View results menu examples
/
Scrolls over stored results of particular functions for selected custom
autotest sequence.
PgUp (F1)
PgDown (F2)
MORE (F5)
Switches between multiple DUT data views.
ESC
Returns to previous menu.
Keys:
Note:
Barcode reader can also be applied for selecting the DUT, see chapter 6.4 Working
with barcode / RFID tag.
DUT tickers
Each DUT is marked with a ticker. The ticker appears at the right of the DUT number
and helps to speed up finding DUTs to be retested.
The meaning of the tickers is as follows:
Recalling autotest project results for selected DUT
By pressing ENTER key on an DUT, more information regarding the DUT results and
data can be viewed.
Keys:
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MI 3321 MultiservicerXA Autotest sequences
View Project autotest results menu
Compare results menu example
New result of particular test is better than last result.
Examples: New insulation resistance result is higher than old result.
7.3.2 Starting a project autotest
Select Project Autotest in PAT testing main menu.
Using the filters, search for the DUTs to be retested. After the DUT is found and
selected (in Project autotest result menu) begin retesting the DUT by pressing the
START key.
The autotest sequence will be the same as it was for the selected Project autotest.
Exactly the same DUT data (except time and user) will be offered to store in the
selected Project autotest.
When a new autotest is saved, it will get an »I« ticker. The original autotest will get a
»I« or »PC« ticker when the DUT is retested through the project autotest.
7.3.3 Comparison of results (evaluation of result trends)
If an autotest sequence was performed from the Project autotests menu, an additional
option TREND is offered in the View result menu after the autotest is finished.
In the Save results window, press the VIEW (F4) key the results to enter the view
results window. By pressing TREND (F4) key again a comparison between the old and
new test data will be performed. This is a very useful feature to evaluate result trends in
cases where results are relatively close to the limit.
Evaluation of test results
Meaning of trend symbols:
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MI 3321 MultiservicerXA Autotest sequences
New earth bond result is lower than old one.
Difference between old and new result of particular test is so small that can be
treated as the same.
Example: New insulation resistance result stays at the same level as old result.
New result of particular test is worse than last result.
Examples: New insulation resistance result is lower than old result.
New earth bond result is higher than old one.
/
Scroll over comparison results of particular functions.
PgUp (F1)
PgDown (F2)
RESULT (F5)
Returns to View results menu.
ESC
Returns to Project autotest menu.
Barcode / TAG menu - appliances
Barcode menu – welding machines
/
Select the device.
ENTER
Opens menu for selected device.
APPL.(F4) /
WELDING (F4)
Switches between operating mode for appliances and welding
machines
ESC
Returns to Main menu.
Keys:
7.4 Barcode / TAG autotests
Barcode/ TAG menu supports operation with barcodes and RFID tags. From this menu
the following actions can be performed:
Device test sequences can be read from barcode labels.
Test sequences and stored measurement results for tested DUT can be downloaded
(uploaded) from (to) the RFID tags.
Select Barcode/ TAG in PAT testing main menu.
Keys:
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MI 3321 MultiservicerXA Autotest sequences
Connecting RFID tag reader/writer to the instrument MultiservicerXA
RFID tag menu
RFID tag menu
7.4.1 Working with RFID tags
To use RFID system, connect RFID reader/writer to DB-9 female BARCODE connector
first. See RFID reader/writer Instruction manual for more information.
Note:
Because of limited memory space of RFID tags, the following data are not stored in
RFID tags:
- DUT name,
- Repairing code,
- Comments.
Loading data from RFID tags to the instrument
Select Tag test from Barcode / tag menu and press the ENTER key to confirm. The
MultiservicerXA instrument is now ready to accept RFID tag data.
Once the data from RFID tag have been successfully received, the following menu is
displayed:
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MI 3321 MultiservicerXA Autotest sequences
/
Select the option.
ENTER
Opens menu for selected option.
ESC
Returns to Barcode/tag menu.
Keys:
If no test results were stored in RFID tag, the View results option won’t be displayed.
The following actions can be performed now:
- New reading from RFID tag,
- View autotest sequence,
- View autotest results,
- Start autotest sequence.
Viewing autotest sequence from RFID tag
Select View autotest in TAG menu and press ENTER key to confirm. Refer to chapter
7.2.2 Viewing/modifying and saving of existing custom autotest.
Starting autotest sequence from RFID tag
Select Start new autotest in TAG menu and press ENTER key. Refer to chapter 7.5
Performing autotest sequences - appliances.
Viewing autotest results from RFID tag
Select View results in TAG menu and press ENTER key to confirm. Refer to chapter
8.2 Recalling results.
Sending an autotest sequence to RFID tag
From the Autotest custom menu press the SEND (F5) key. Selected autotest
sequence is loaded to the RFID tag using RFID reader/writer.
See RFID reader/writer Instruction manual for more information.
Sending an autotest sequence/results to RFID tag
Autotest sequence/results can be sent to RFID TAG from the Save results or Recall
memory menu. Press the SEND (F3) key. When sending data from Recall results menu
select TAG reader/writer option first and press ENTER key to confirm. Selected data
from the instrument are loaded to the RFID tag using RFID reader/writer.
See RFID reader/writer Instruction manual for more information.
7.4.2 Working with barcode reader
The instrument supports the following functions:
- Reading 24 pre-defined autotest shortcut codes from barcode labels,
- Reading DUT numbers from barcode labels.
Two Barcode systems are supported. Refer to Appendix B for detailed information.
Connect barcode reader to the DB-9 female BARCODE connector first.
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MI 3321 MultiservicerXA Autotest sequences
Connecting barcode reader to the MultiservicerXA instrument
Barcode test menu
VIEW (F1)
Views selected autotest sequence. Refer to chapter 7.2.2
Viewing/modifying of existing custom autotest.
START
Starts selected autotest sequence. Refer to chapter 7.5 Performing
autotest sequence.
/
Manually selects a new autotest sequence by setting its code.
ESC
Returns to Barcode/tag menu.
Adding DUT number in save results / search results menu
Reading autotest sequence using barcode
Select Barcode test in Barcode/tag menu and press ENTER key. The latest received
or set autotest sequence name and its code is displayed
A new autotest sequence received from the barcode reader will be accepted by the
instrument (refer to Appendix A for available autotest sequences and its codes). A
successful receive of the barcode is confirmed by two short confirmation beeps.
Keys:
Reading DUT number using barcode
With the barcode reader also DUT number can be read from barcode label in different
menus. A successful receive of the barcode is confirmed by two short confirmation
beeps.
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MI 3321 MultiservicerXA Autotest sequences
Visual test menu
PASS (F1)
Confirms that the visual inspection passed.
SKIP (F4)
Skips visual test.
FAIL (F5)
Ends the autotest sequence.
START
Starts the earth bond resistance measurement.
Proceeds with the next earth bond resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
7.5 Performing autotest sequences – for appliances
7.5.1 Visual inspection
A thorough visual check must be carried out before each electrical safety test.
Following items should be checked:
- Inspection of DUT for sign of damage.
- Inspection of flexible supply cable for damage.
- Any signs of pollution, moisture, dirt that can jeopardize safety. Especially
openings, air filters, protection covers and barriers must be checked!
- Are there signs of corrosion?
- Are there signs of overheating?
- Inscriptions and marking related to safety must be clearly readable.
- Installation of the DUT must be performed according to the Instruction manuals.
- During visual inspection the measuring points for the electrical testing have to be
determined too.
If the visual test passes, the instrument automatically proceeds with the next test in the
sequence.
If the visual test fails the user must evaluate if it is safe to proceed with the
measurements.
Keys
7.5.2 Earth bond resistance measurement
Measurement is described in chapter 6.2.1 Earth bond resistance.
If the earth bond test fails or was skipped other tests (except Polarity) will not be carried
out because of safety.
Keys
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MI 3321 MultiservicerXA Autotest sequences
HELP (F2)
Displays the earth bond test help screens.
REPEAT (F3)
Repeats the earth bond resistance measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips earth bond resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the insulation resistance measurement.
Proceeds with the next insulation resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays the insulation test help screens.
REPEAT (F3)
Repeats the earth bond resistance measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips insulation resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the Insulation resistance S measurement.
Proceeds with the next insulation resistance S measurement
Notes:
Compensation of test leads resistance should be performed before doing autotests.
For compensation of test leads description in chapter 6.2.1.1 Compensation of test
leads resistance can be used as reference.
When polarity test in enabled in autotest sequence then earth bond resistance is
performed between IEC test connector (PE terminal) and test socket (PE terminal).
If polarity test is disabled in autotest sequence, earth bond test is performed
between EB/S test probe and test socket (PE terminal).
HW 4.x or higher :
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
7.5.3 Insulation resistance measurement
Measurement is described in chapter 6.2.2 Insulation resistance.
If the insulation test fails or was skipped other tests (except Polarity) will not be carried
out because of safety.
Keys
7.5.4 Insulation resistance S measurement
Measurement is described in chapter 6.2.3 Insulation resistance S.
If this insulation test fails or was skipped other tests (except Polarity) will not be carried
out because of safety.
Keys
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MI 3321 MultiservicerXA Autotest sequences
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays the insulation resistance S measurement help screens.
REPEAT (F3)
Repeats the insulation resistance S measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips insulation resistance S measurement.
END (F5)
Ends the autotest sequence.
START
Starts the substitute leakage current measurement.
Proceeds with the next substitute leakage current measurement (in
continuous measurement mode only).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays substitute leakage test help screens.
REPEAT (F3)
Repeats the substitute leakage current measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips substitute leakage current measurement.
END (F5)
Ends the autotest sequence.
START
Starts the Substitute leakage S current measurement.
Proceeds with the next substitute leakage S current measurement (in
continuous measurement mode only).
Proceed to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays substitute leakage S test help screens.
REPEAT (F3)
Repeats the substitute leakage S current measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips substitute leakage S current measurement.
END (F5)
Ends the autotest sequence.
7.5.5 Substitute leakage current measurement
Measurement is described in chapter 6.2.4 Substitute leakage current.
If the substitute leakage test fails or was skipped other tests (except Polarity) will not be
carried out because of safety.
Keys
7.5.6 Substitute leakage S measurement
Measurement is described in chapter 6.2.5 Substitute leakage S.
If the substitute leakage S test fails or was skipped other tests (except Polarity) will not
be carried out because of safety.
Keys
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MI 3321 MultiservicerXA Autotest sequences
START
Starts the leakage current measurement.
Proceeds with the next leakage current measurement (in continuous
measurement mode only).
Proceed to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays leakage test help screens.
REPEAT (F3)
Repeats the leakage current measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips leakage current measurement.
END (F5)
Ends the autotest sequence.
START
Starts the touch leakage current measurement.
Proceeds with the next touch leakage current measurement (in
continuous measurement mode only).
Proceed to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays touch leakage test help screens.
REPEAT (F3)
Repeats the touch leakage current measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips touch leakage current measurement.
END (F5)
Ends the autotest sequence.
START
Starts the polarity test.
Proceed to the next autotest sequence measurement.
HELP (F2)
Displays polarity test help screens.
7.5.7 Differential leakage current
Measurement is described in chapter 6.2.6 Differential leakage current.
If the differential leakage test fails or was skipped other tests will not be carried out
because of safety.
Keys
7.5.8 Touch leakage current measurement
Measurement is described in chapter 6.2.7 Touch leakage current.
If the touch leakage test fails or was skipped other tests will not be carried out because
of safety.
Keys
7.5.9 Polarity test
Measurement is described in chapter 6.2.8 Polarity test.
If the polarity test fails or was skipped other tests will not be carried out because of
safety.
Keys
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MI 3321 MultiservicerXA Autotest sequences
REPEAT (F3)
Repeats the polarity test.
SKIP (F4)
Skips polarity test.
END (F5)
Ends the autotest sequence.
START
Starts the TRMS leakage current measurement.
Proceeds with the next TRMS leakage current measurement (in
continuous measurement mode only).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
HELP (F2)
Displays TRMS leakage current help screens.
REPEAT (F3)
Repeats the TRMS leakage current measurement.
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
SKIP (F4)
Skips TRMS leakage current measurement.
END (F5)
Ends the autotest sequence.
START
Starts the PRCD test.
Proceeds to the next autotest sequence measurement.
HELP (F2)
Displays PRCD test help screens.
REPEAT (F3)
Repeats the PRCD test.
SKIP (F4)
Skips the PRCD test.
END (F5)
Ends the autotest sequence.
7.5.10 TRMS current measurement using clamp current adapter
Measurement is described in chapter 6.2.9 Clamp current measurement.
If the current clamp test fails or was skipped other tests will not be carried out because
of safety.
Keys
7.5.11 PRCD test
Measurement is described in chapter 6.2.10 PRCD test.
If the PRCD test fails or was skipped other tests will not be carried out because of
safety.
Keys:
HW 4.x or higher :
When PRCD test is enabled in autotest sequence then mains supply voltage is
applied on test socket during earth bond test (if selected in autotest sequence).
7.5.12 Functional test
The main objective of this test is to verify correct operation of the DUT.
Especially items relevant for safety should be checked:
- All main operating modes. Testing power during this check is useful.
- Mechanical operation (motors, rotating parts)
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MI 3321 MultiservicerXA Autotest sequences
Functional test menu
START
Starts the POWER test (optional).
Proceeds to the next autotest sequence measurement.
PASS (F1)
Commits a manual ticker and ends autotest.
HELP (F2)
Displays Functional test help screens.
SKIP(F4)
Skips the Functional test.
FAIL (F5)
Commits a manual ticker and ends the autotest sequence.
- Safety relevant functions (alarms, switches etc)
A PASS/ FAIL ticker can be committed manually.
The power measurement can be carried out optionally and is stored too. The Power
measurement is described in chapter 6.2.11 Power / Functional test.
Keys:
7.6 Performing autotest sequences – for welding machines
7.6.1 Visual inspection
A thorough visual check must be carried out before each electrical safety test.
Following items should be checked:
- Inspection of DUT for sign of damage.
- Inspection of flexible supply cable for damage.
- Any signs of pollution, moisture, dirt that can jeopardize safety. Especially
openings, air filters, protection covers and barriers must be checked!
- Are there signs of corrosion?
- Are there signs of overheating?
- Inscriptions and marking related to safety must be clearly readable.
- Installation of the DUT must be performed according to the Instruction manuals.
- During visual inspection the measuring points for the electrical testing have to be
determined too.
If the visual test passes, the instrument automatically proceeds with the next test in the
sequence.
If the visual test fails the user must evaluate if it is safe to proceed with the
measurements.
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MI 3321 MultiservicerXA Autotest sequences
Visual test menu
PASS (F1)
Confirms that the visual inspection passed.
SKIP (F4)
Skips visual test.
FAIL (F5)
Ends the autotest sequence.
START
Starts the Continuity measurement.
Proceeds with the next continuity measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
HELP (F2)
Displays the Continuity test help screens.
REPEAT (F3)
Repeats the Continuity measurement.
SKIP (F4)
Skips Continuity resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the insulation resistance measurement.
Proceeds with the next insulation resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
Keys:
7.6.2 Continuity of the protective circuit
Measurement is described in chapter 6.3.1 Continuity of the protective circuit.
If the Continuity test fails or was skipped other tests will not be carried out because of
safety.
Keys:
Notes:
Compensation of test leads resistance should be performed before doing autotests.
For compensation of test leads Description in chapter 6.2.1.1 Compensation of test
leads resistance can be used as reference.
7.6.3 Insulation resistance (supply circuit to protective circuit)
Measurement is described in chapter 6.3.2 Insulation resistance (supply circuit to
protective circuit). If this insulation test fails or was skipped other tests will not be carried
out because of safety.
Keys:
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MI 3321 MultiservicerXA Autotest sequences
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
HELP (F2)
Displays the insulation resistance test help screens.
REPEAT (F3)
Repeats the insulation resistance measurement.
SKIP (F4)
Skips insulation resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the insulation resistance measurement.
Proceeds with the next insulation resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
HELP (F2)
Displays the insulation resistance test help screens.
REPEAT (F3)
Repeats the insulation resistance measurement.
SKIP (F4)
Skips insulation resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the insulation resistance measurement.
Proceeds with the next insulation resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
HELP (F2)
Displays the insulation resistance test help screens.
REPEAT (F3)
Repeats the insulation resistance measurement.
SKIP (F4)
Skips insulation resistance measurement.
END (F5)
Ends the autotest sequence.
7.6.4 Insulation resistance (welding circuit to protective circuit)
Measurement is described in chapter 6.3.3 Insulation resistance (welding circuit to
protective circuit). If this insulation test fails or was skipped other tests will not be carried
out because of safety.
Keys:
7.6.3 Insulation resistance (supply circuit to welding circuit)
Measurement is described in chapter 6.3.4 Insulation resistance (supply circuit to
welding circuit). If the insulation test fails or was skipped other tests will not be carried
out because of safety.
Keys:
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MI 3321 MultiservicerXA Autotest sequences
START
Starts the insulation resistance measurement.
Proceeds with the next insulation resistance measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
HELP (F2)
Displays the insulation resistance test help screens.
REPEAT (F3)
Repeats the insulation resistance measurement.
SKIP (F4)
Skips insulation resistance measurement.
END (F5)
Ends the autotest sequence.
START
Starts the leakage current measurement.
Proceeds with the next leakage current measurement
(in continuous mode).
Proceeds to the next autotest sequence measurement (in single
measurement mode only).
ENTER
Proceeds to the next autotest sequence measurement (in continuous
measurement mode only).
CHG ON (F1)
The instrument automatically changes L and N polarity of connected
welding equipment during the test (suitable for 1-phase equipment
with schuko plug). Higher measured current will be considered.
CHG OFF (F1)
Disables the automatic change of polarity function.
HELP (F2)
Displays the leakage current test help screens.
REPEAT (F3)
Repeats the leakage current measurement.
SKIP (F4)
Skips the leakage current measurement.
END (F5)
Ends the autotest sequence.
7.6.6 Insulation resistance (supply circuit of class II equipment to accessible surfaces)
Measurement is described in chapter 6.3.5 Insulation resistance (supply circuit of class
II equipment to accessible surfaces). If this insulation test fails or was skipped other
tests will not be carried out because of safety.
Keys:
7.6.7 Welding circuit leakage current
Measurement is described in chapter 6.3.6 Welding circuit leakage current. If this
leakage test fails or was skipped other tests will not be carried out because of safety.
Keys:
7.6.8 Primary leakage current
Measurement is described in chapter 6.3.7 Primary leakage current. If this leakage test
fails or was skipped other tests will not be carried out because of safety.
Keys:
100
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