GMW TG uni 1 User manual

TG uni 1
TG uni 1 A
TG euro 1
TG euro 1 A
TG euro 1 med
TG euro 1 A med
Appliance tester for testing
protective measures in accordance
with DIN VDE 0701-0702 / EN 62638
and DIN VDE 0751-1 / EN 62353
Operating manual
Version 5.0.28 or higher

Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Contents
2
Content Page
1. Safetyinformation................................................................................................4
2. Introduction.............................................................................................................4
2.1 Modelandtypedesignation/identification.......................................................5
2.2 Productdescription................................................................................................5
2.3 Otherequipmentfeatures.....................................................................................5
2.4 Scopeofdelivery....................................................................................................5
2.5 Optionalaccessories.............................................................................................5
2.6 Transportandstorage..........................................................................................5
3. Safetyinstructions..............................................................................................6
4. Appropriateusage...............................................................................................7
5. Operatingelements..............................................................................................8
5.1 Meaningofthesignaltones..................................................................................8
6. Startingup...............................................................................................................9
6.1 Basicsettingsoftheappliancetester..................................................................9
6.2 Compensationofthemeasuringline................................................................10
6.3 Settingthemeasuringmethodforprotectivecond.currentmeasurement .........10
6.4 Settingthedate.......................................................................................................11
6.5 Customer-specificsettings....................................................................................11
6.6 Changingthedurationofateststage...............................................................11
6.7 Enteringthenameoftheinspector....................................................................11
6.8 Activatingthecontrolcode...................................................................................12
6.9 Expertmode.............................................................................................................12
6.10 Selectingthemenulanguage.............................................................................12
6.11 Selectingofthedatamemory..............................................................................12
7. Conducting tests:General information on DIN VDE 0701-0702 ........... 13
8. Conductingtests:Explanationofterminology..........................................14
8.1 Touchcurrent(IB)...................................................................................................14
8.2 Differentialcurrent(ID).........................................................................................14
8.3 Device leakage current (IGA) .............................................................. 14
8.3.1 Substituteleakagecurrent(IEA).........................................................................14
8.3.2 Substitutedeviceleakagecurrent(IEGA)........................................................14
8.3.3 Device leakage current – Alternative measurement (IGA) ............................ 14
8.3.4 Substitutepatientleakagecurrent(IEPA).........................................................15
Content Page
8.3.5 Leakage current from the applied part – Alternative measurement ............ 15
8.3.6 Patientleakagecurrent(IPA)...............................................................................15
8.3.7 Leakagecurrentfromtheappliedpart.............................................................15
8.3.8 Patientleakagecurrent–Mainsvoltageat the applied part .........................15
8.3.9 Leakage current from applied part – Mains voltage at applied part ............ 15
8.4 Insulationresistance(RISO) ...............................................................................15
8.5 Protectivemeasures...............................................................................................15
8.5.1 Deviceswithaprotectiveearthconnector(PCI) ............................................15
8.5.2 Deviceswithoutaprotectiveearthconnector(PCII)......................................15
8.5.3 DevicesconnectedtoPELVelectriccircuits(PCIII)........................................15
8.6 Protectiveconductorcurrent(IPE)......................................................................16
8.7 Protectiveconductorresistance(RPE)..............................................................16
8.8 Visualinspection.....................................................................................................16
9. Conducting tests in accordance with DIN VDE 0701-0702:
Definitionofstandards.......................................................................................17
9.1 Visualinspection.....................................................................................................17
9.2 Measuringtheprotectiveconductorresistance..............................................17
9.3 Measuringinsulationresistance.........................................................................17
9.4.1 Measuringtheprotectiveconductorcurrent....................................................18
9.4.2 Measuringtouchcurrent.......................................................................................19
9.5 Inspectingtheinscriptions....................................................................................19
9.6 Functiontest.............................................................................................................19
9.7 Documentation.........................................................................................................19
9.8 Diagram1:Testprocedurefordeviceswithprot.conductor(PCI)...............20
9.9 Diagram2: Test procedurefor devices without prot. conductor (PC II) ........ 21
10. Conducting tests with the appliance tester: According to DIN
VDE 0701-0702, Example 1 - devices with protective conductor (PC I) ...... 22
10.1 Visualinspection.....................................................................................................25
10.2 Protectiveconductorresistance..........................................................................26
10.3 Insulationresistance..............................................................................................26
10.4.1 Protectiveconductorcurrent (substitute leakage current) ........................... 27
10.4.2 Protectiveconductorcurrent................................................................................27
10.5 Functiontest.............................................................................................................28
10.6 Inspectingtheinscriptions....................................................................................28
10.7 Documentation.........................................................................................................29

Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Contents
3
Content Page
11. Conducting tests with the appliance tester: According to
DIN VDE 0701-0702, Example 2 - devices without protective
conductor(PCII)...................................................................................................31
11.1 Visualinspection.....................................................................................................33
11.2 Insulationresistance..............................................................................................34
11.3.1 Touchcurrent(substituteleakagecurrent).....................................................34
11.3.2 Touchcurrent...........................................................................................................35
11.4 Functiontest.............................................................................................................36
11.5 Inspectingtheinscriptions....................................................................................36
11.6 Documentation.........................................................................................................36
12. Conducting tests with the appliance tester: According to
DINVDE0701-0702,Example3-deviceswithSELV/PELV(PCIII)............38
12.1 Visualinspection.....................................................................................................41
12.2 Insulationresistance..............................................................................................41
12.3 Documentation.........................................................................................................42
13. Conducting tests with the appliance tester:
Examplesofcontrolcodes (at TGeuro1/ TGeuro1med only) ..........................43
14. Conducting tests with the appliance tester: According to DIN
VDE 0701-0702, Special test procedure according to customer-
specificsettings...................................................................................................44
15. Conducting tests in accordance with DIN VDE 0751-1:
Definitionofstandards(for TGeuro1medonly) .................................................46
15.1 Generalinformation...............................................................................................46
15.2 Sequenceoftests...................................................................................................46
15.3 Inspection(visualinspection)..............................................................................47
15.4 Protectiveconductorresistance..........................................................................47
15.5 Leakagecurrents...................................................................................................48
15.6 Insulationresistance..............................................................................................52
15.7 Functiontest.............................................................................................................52
15.8 Assessment ..............................................................................................................52
15.9 Documentation.........................................................................................................52
15.10 Diagram1:TestprocedureforMEdeviceswithprotectionclassI.................53
15.11 Diagram2:TestprocedureforMEdeviceswithprotectionclassII................54
Content Page
16. Conducting tests with the appliance tester: According to DIN VDE
0751-1, Example 4 - Devices with protective conductor (PC I)
andappliedparttypeB (at TGeuro1med only) ..................................................55
16.1 Visualinspection.....................................................................................................58
16.2 Protectiveconductorresistance..........................................................................58
16.3 Insulationresistance(optional)..........................................................................59
16.4 Leakagecurrents...................................................................................................59
16.5 Functiontest.............................................................................................................60
16.6 Inspectingtheinscriptions....................................................................................60
16.7 Documentation.........................................................................................................60
17. Conducting tests with the appliance tester: According to DIN VDE
0751-1, Example 5 - Devices without protective conductor (PC II)
andwithappliedparttypeCF(atTG euro1medonly) ........................................61
17.1 Visualinspection.....................................................................................................64
17.2 Leakagecurrents...................................................................................................64
17.3 Leakagecurrentfromtheappliedpart.............................................................65
17.4 Functiontest.............................................................................................................65
17.5 Inspectingtheinscriptions....................................................................................65
17.6 Documentation.........................................................................................................66
18. Conducting tests with the appliance tester: According to DIN VDE
0751-1, Example 6 - Testing removable cables (at TG euro 1 med only) ....... 66
18.1 Visualinspection.....................................................................................................68
18.2 Protectiveconductorresistance..........................................................................68
18.3 Insulationresistance..............................................................................................69
18.4 Documentation.........................................................................................................69
19. Technicaldata........................................................................................................70
19.1 Technicaldataforfunctiontests.........................................................................71
19.2 Generaltechnicaldata..........................................................................................71
19.3 Calibratingtheappliancetester.........................................................................71
20. Note on using the internal memory or external memory
(MMC/SDcard)oftheappliancetester........................................................72
21. Manufacturer’sguaranteeconditions..........................................................72

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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Safety information
1. Safety information
Tests on the electrical safety of electrical appliances may only be carried
out by qualified electricians or under their supervision. Carefully read
through the following safety information before starting up the appliance
tester.
Symbols used in the operating manual and on the appliance tester:
Warning: hazardous situation. Follow the operating manual.
Caution! Dangerous voltage, danger of electric shock.
Note. Make sure you follow the manual.
CE CE mark of conformity.
The operating manual contains information and notes which are
necessary for the safe operation and use of the appliance tester.
Before using (starting up/installing) the appliance tester, the
operating manual should be carefully read through and followed in
all points.
If the manual is not observed or if you fail to observe the warnings
and notes, serious injury to the user and damage to the appliance
tester can occur.
All the technical data and quoted standards in this manual are up-
to-date at the time of going to press and have been determined to
the best of our knowledge, nevertheless this data may be subject
to errors and printing errors. Therefore no legal responsibility or
any other liability can be accepted for incorrect information or the
consequences of this information. The respective provisions,
regulations and standards are the authorities defining the
procedures to be followed when conducting tests. There is
no intention to infringe on any existing patents and other property
rights with this publication.
2. Introduction
You have acquired a high-grade device from the company Gilgen, Mueller
& Weigert Nuremberg (GMW) with which you can carry out repeatable
measurements over a very long period of time.
The product was calibrated during the manufacturing process in accordance
with the specified operating procedures.

2.1 Model and type designation / identification
A type plate and series number sticker are situated on the inside of the
housing cover (behind the accessories bag).
In the case of queries, always give the product designation and series
number.
2.2 Product description
The appliance tester has been developed for carrying out the following
measurements for testing the safety of electrical appliances in accordance
with DIN VDE 0701-0702/EN 62638 (BGV A3)
and DIN VDE 0751-1/EN 62353:
– Measuring protective conductor resistance with compensation of the
measuring line
– Measuring insulation resistance
– Measuring substitute leakage current
– Measuring protective conductor current - direct method or as
differential current
– Measuring touch current - direct method or as differential current
– Measuring device leakage current / leakage current from the applied
part - alternative measurement (at TG euro 1 med only)
– Measuring device leakage current - direct method or as differential
current (at TG euro 1 med only)
– Measuring the leakage current from the applied part - mains voltage at
the applied part (at TG euro 1 med only)
– Function test with measurement of mains voltage, load current, active
power, apparent power and reactive power, power factor and frequency
– Testing of non-heating devices and extension cables
2.3 Other equipment features
– Stable, dust-proof carrying case as housing
– Large, easy-to-read touch-screen for operating the tester (backlit)
– Good/bad display in plain text (suitable for technically trained persons)
– Connection for barcode scanner for reading-in the test object’s ID numbers
– USB interface
– MMC/SD card for storing and transferring measurement data
2.4 Scope of delivery (order no. in brackets)
1 Appliance tester
1 measurement accessory set (7910086048) with safety test line, safety
crocodile clip and safety test tip
1 USB cable (7910086047)
1 MMC 128 MB or SD 1 GB memory card (7910086046)
1 CD-ROM with Windows® standard PC software (7910086050)
1 accessories bag with Velcro fastener (3214086006)
1 quick guide (3531086006)
1 operating manual, printed DIN A5 book (2786688240)
2.5 Optional accessories (not included in delivery)
– Barcode scanner (7910086044)
– TGA three-phase adapter (7920018691) for testing devices with three-
phase connection - active for 5-pole 32 A 400 V CEE plugs
– TGP three-phase adapter (7920018690) for testing devices with three-
phase connection - active for 3-pole 16 A 230 V CEE plugs; passive
for 5-pole 16 A 400 V and 5-pole 32 A 400 V CEE plugs
– Adapter for checking extension cables (7920018680)
– Adapter for non-heating appliance plugs (7920018660)
– TG brush probe (7910086049) for touchable conductive rotating parts
– 12-unit adapter (6100001001) for contacting multiple applied parts
(for TG euro 1 med only)
2.6 Transport and storage
Please retain the original packaging for dispatch at a later date, e.g. for
calibration.
Transport damage that occurs due to inadequate packaging is not covered
by the manufacturer’s guarantee.
The appliance tester must be stored in a dry, closed room. If the device is
transported in extreme temperatures, it requires at least 2 hours
acclimatisation before being switched on.
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Introduction

3. Safety instructions
The appliance tester was constructed and tested in accordance with the
applicable safety regulations and left the workshop in a faultless safety
condition. In order to maintain this condition and ensure safe operation, the
user must observe the instructions and warnings contained in this operating
manual.
With all work, the applicable accident prevention regulations of the
trade associations for electrical systems and equipment must be
observed.
To avoid electric shock, the applicable safety regulations and DIN-
VDE regulations regarding high touch voltage must be observed
without fail when working with voltages greater than 120 V DC or
50 V eff AC.
Measuring at a dangerous proximity to electrical systems should only be
carried out under the instruction of a responsible electrician, and never
alone.
Check the appliance tester and the connecting cables for external damage
before every new operation.
Make sure that the appliance tester and the cable connections are in
faultless condition. The appliance tester may not be used if one or more
functions fail or if functional readiness is not evident.
The measuring lines and the measuring accessories may only be
touched in the designated handling areas.
Touching measuring connections, e.g. test tips, must be avoided
under all circumstances.
If the safety of the operator is no longer guaranteed, the appliance
tester must be decommissioned and secured against unwanted
use. This is the case if the device:
– shows obvious signs of damage
– no longer carries out the required measurements
– has been stored under adverse conditions for too long
The appliance tester may only be used in the operating and measuring
ranges specified under Technical data.
Avoid subjecting the appliance tester to heating from direct sunshine. Only
this will guarantee faultless functioning and a long service life of the device.
Never open the housing of the appliance tester because of the danger of
high voltages. The appliance tester contains no parts that can be replaced
by the user.
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Safety instructions

4. Appropriate usage
The tester may only be used under the conditions and for the purposes for
which it has been designed. It is particularly important to observe the safety
instructions and the technical data regarding ambient conditions and usage
in a dry environment.
The appliance tester may not be used for measuring in electrical systems.
The appliance tester may only be plugged into to a properly connected
earthed mains socket. This may be protected with a maximum 16 A!
The appliance tester is designed for operation with a rated voltage of 230 V
AC 50 Hz, it may never be connected to higher voltage.
The maximum output current of the mains socket is 16 A!
The appliance tester may not be used for constant measuring.
Operational safety is no longer guaranteed in the case of modifications or
conversions that have not been carried out by the manufacturer.
Maintenance or calibration work may only be carried out by the
manufacturer.
Subject the appliance tester to an electromagnetic field can impair the
function of the appliance tester.
In order to avoid damaging the appliance tester, the test socket and the
measuring connections may not be connected to an external voltage
source.
Only the supplied original measuring lines or equivalent safety measuring
accessories may be used!
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Appropriate usage

5. Operating elements
Explanation of the connections, operating elements and displays of the
appliance tester.
Mains cable with mains plug for
connectingtheappliancetester
tothemainspowersupply230V
+10%, -15%, 50 Hz
Thermalfuseforthetestobject
andtesterF16 A
Mains switch
CardslotforanMMC/SDmemory
card
USBsocketforconnectingaPC
RS232socketforconnectinga
barcodescanner
Touch-screen(LCdisplayandcontrolscreen)
Test/Mains socket for connectingtestobjects
havinganearthedplug,230V16A,50Hz
„PE“ connection socket (yellow), in parallel to
theprotectiveconductorcontactinthetest
socket
Frontpanel,Fig.1
„Probe“connectionsocket (red) for the test line
5.1 Meaning of the signal tones
– Short single tone: confirmation of button press
– Short double tone: end of a test stage with automatic test procedure
– Long single tone, continuous tone: fault
Test line, test tip and test clip in
themainscablestorage
compartment
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Operating elements
Casehousing,Fig. 2
Housingcoverwith2snap fasteners
Accessories bag with quick guide
Handle(fold-away)
„IPEA“connection socket (red) for the testline
to the applied part (at TG euro 1 med only)

6. Starting up
The appliance tester is equipped with modern touch-screen technology.
This means that the LC display and the control buttons are in one control
screen.
The control buttons are always edged.
After activating the mains switch a self-test is carried out.
If everything is in order, the following display appears on the touch-screen
as a switch-on message (Fig. 3):
Continue with button (Fig. 3).
The „Device settings“ screen appears (Fig. 3a).
6.1 Basic settings of the appliance tester
Press the [Configuration] button in the Main menu (Fig. 4).
The Configuration Menu appears (Fig. 5):
Fig. 5
Appliance type
Relevantstandards
(VDE 0751/EN 62353
at TG euro 1 med only)
Firmwareversion
Manufacturer
Button
Headline
Functionbuttons:
Appliancetesting
Testingofindividualparameters
Basic settings of the appliance
tester
Fig. 3
Fig. 4
Headline
9
Symbolindicatingthat
compensationforthetestline
hasbeenperformed
Measuringmethodforprotective
conductorcurrent:
DIR.–directmeasurement(test
objectinsulatedfromearth)
DIF.–differentialcurrent
measurement(testobjectnot
insulatedfromearth)
Functionbuttons
Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Starting up
The necessary settings can be performed directly via the function buttons or
the settings can be made via the configuration menu, see Point 6.1.
Since the appliance tester does not contain a real time clock, the test date
shown here must either be confirmed or entered anew.
After confirmation with the [next] button the Main menu appears (Fig. 4):
Fig. 3a
Entryofthedate
Entryoftheinspectorname/
code
Entryofthecustomernumber
Switchthecontrolcodeon/off
Expert mode switch on/off
Serialnumberoftheappliance
tester
Acoustic signal switch on/off
Functionbuttons

and a permanent warning signal sounds, the measuring line
resistance is greater than 2 Ωand cannot be compensated.
The protective conductor resistance test is locked.
In this case the measuring line should be checked or be replaced with a
low-impedance version. If the measuring line has been successfully
compensated – the following message appears in the display:
„Zero calibration OK.“ Press the [next] button, only then disconnect the line!
A symbol for successful compensation appears in the headline of the
configuration menu (Fig. 5):
6.3 Setting the measuring method – protective conductor current
measurement
In the case of devices of protection class I, where the insulation resistance
measurement cannot or may not be carried out, the protective conductor
current measurement is to be performed either directly or with the differential
current method. The protective conductor current can be determined either
by the direct measuring method, the differential current method or the
substitute leakage current method. The direct measuring method or the
differential current method should be used with test objects that can only be
10
Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Starting up
6.2 Compensation of the measuring line
In order to achieve correct results when measuring the protective conductor
resistance, the resistance of the measuring line must be compensated (zero
calibration). Press the function button [comp.] (Fig. 5). The Zero
calibration menu appears. Follow the instructions in the display (Fig. 6):
–Connectthetesttip/test
clip with the measuring line and
insertthemeasuringlineplug inthe
„Probe“ socket (Fig. 1).
–Connect the test tip/test clip with
theprotectiveearthcontactofthe
testsocket.
If the following message
appears in the display:
”Error: zero calibration”
Fig. 6
switched on with mains voltage (also see Point 9.8).
Caution! In this case the test object is supplied with mains
voltage during the test.
The differential current measurement determines the total leakage current of
the test object by measuring the total current of all active conductors (L-N).
The differential current measurement must be applied if the test object
has additional earth connections or cannot be insulated. Direct
measurement can be used if the test object has no additional earth
connections or is insulated.
WARNING! The test object must be insulated in order to
correctly measure the protective conductor current.
To change the measuring method, press the [m. meth.] function button
in the configuration menu, see Fig 5.
The symbol in the headline changes accordingly:
[DIR.] – direct measurement [DIF.] – differential current method
Fig. 7 Once the date has
been set it remains
unchanged in the memory
of the appliance tester until
modified or deleted – the
appliance tester does not
have a real time clock!
6.4 Setting the date
You can set the test date on the appliance tester. Press the function
button [date] to change to the input screen (Fig. 5). The date is entered on
the touch-screen by means of the pictured 10-button keypad (Fig. 7). The
following formats are possible: |D.M.YY|, |DD.MM.YY| and |DD.MM.YYYY|.
The set date is saved along with the measuring results of every test and
also appears in the log printout.

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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Starting up
6.5 Customer-specific settings
The scope of functions of the appliance tester can be adapted to customer
specifications. This can simplify the operation of the appliance tester.
These settings do not change the standard conformity of the
appliance tester! You reach the setup menu by pressing the [setup]
function button in the configuration menu (Fig. 5) - see also point 14
starting on page 44.
Fig. 10
6.6 Changing the duration of a test stage (automatic mode)
The default duration of each test stage is set to 3 s at the factory. This
setting can be changed if for example the test object requires a longer time
to be switched on.
Press the [t. time] function button in the configuration menu. Using the
10-button keypad, you can enter a new test time in the next screen (Fig. 8).
The possible setting range is 3 to 600 seconds.
Fig. 8
6.7 Entering the name of the inspector
To enter the name or designation of the inspector, press the [inspect]
function button in the configuration menu. The screen changes to an
alphanumeric keypad. The input field has 20 characters (Fig. 9). You can
switch between alphabetic and numeric keys by using the buttons [123] or
[ABC]. The entered name remains saved in the memory even after the
tester has been switched off.
The entered name
is assigned to every test
carried out and also
appears in the log printout.
Fig. 9
This input area is
locked by a code key (Fig.
10). Please contact us for
further information: Email -
[email protected]
6.8 Activating the control code (TG euro 1 and TG euro 1 med only)
Default settings for a particular test procedure can be assigned to an
appliance via a control code. A 3-digit number is entered before the ID
number of the appliance, either manually or via a barcode scanner, see
barcode printing and/or control code table. Press the [C. code] function
button for this, Fig. 10.
Fig. 11

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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Starting up
6.11 Selecting of the data memory
To save the measurement results, the appliance tester has an internal
memory (16 MB) and an MMC memory card (128 MB, supplied with the
tester). The memory card is used to save and/or transfer the measurement
results. MMC and SD memory cards with capacities from 128 MB to 1 GB
can be used.
Inserting the memory card:
Insert the memory card into the card slot with the label to the left and press
gently until it engages. To eject the memory card, press it down until it
disengages and pull the card upwards and out of the slot.
Caution!
Never force the memory card into the card slot of the
appliance tester. This can damage the memory card and the
card slot. If the memory card is not recognised, check that
it has been correctly inserted.
The measurement results can be stored either in the internal
memory or in the memory card.
In the configuration menu (Fig. 5) press the [menu page 2] function button
and then press the [memory] function button (Figs. 12 and 13) to
switch between the internal memory and the MMC/SD card.
The symbol in the headline changes accordingly:
6.9 Expert mode (TG euro 1 and TG euro 1 med only)
The appliance tester also has an „Expert mode“. This allows advanced
users to save time.
Confirmations of visual inspection, function test and switching on the test
object are omitted from the test procedure.
Press the [mode] function button to make the setting, Fig. 11
Fig. 11a
Fig. 12 Fig. 13
6.10 Selecting the menu language (TG euro 1 and TG euro 1 med only)
To select the menu language press on page 2 of the configuration menus
(Fig. 12), function key [language] and then selecting the appropriate key
for the menu language (Fig. 11b).
At the time the languages German, English, French and Italian are available.
Fig. 11b
– Internal memory – Memory card
Date of last
calibration
Version of
the firmware

7. Conducting tests:
General information on DIN VDE 0701-0702:2008-06
Up to June 2008, appliances able to be disconnected from the system via
plug connections were to be tested according to DIN VDE 0701 after any
maintenance, repair or modification measures. Repeated tests were to be
performed according to DIN VDE 0702.
The VDE 0702 standard, applicable since June 2004, states that electrical
devices which are normally connected via a plug connection but are
actually permanently connected must be tested according to this standard.
The decisive factors for the testing / inspection interval are how the
movable electrical device is used, how it is affected by the environment
and how it is moved. The main consideration is always the estimation of
possible danger to the user in the case of a defect.
Devices belonging to a stationary system are to be tested together with the
associated system according to DIN VDE 0105-100. However, it is also
possible to separate devices from a system which they are permanently
connected to and test them according to the VDE 0702 „Periodic
inspections“.
Point 4 of the DIN VDE 0701-0702 standard „Inspection after repair,
modification of electrical appliances - Periodic inspection on electrical
appliances - General requirements for electrical safety“, applicable since
June 2008, clearly states that:
„A device that cannot be moved without auxiliary equipment and which is
connected to an electrical system via a permanent, protected cable and
which is not held in the hand when used correctly may be subjected to
periodic inspection according to Point 5 (of DIN VDE 0701-702) or according
to DIN VDE 0105-100 depending on the decision of the electrical professional
responsible“.
In contrast to tests after repair or modification, periodic inspections usually
take place on site. The device is to be disconnected from the „mains“, i.e.
the electrical system, before testing. This is the only way of performing a
full test on this type of device.
VDE 0701-0702 defines the sequence of tests as follows:
– Visual inspection
– Protective conductor test
– Insulation resistance measurement
(where possible, not with IT devices)
– Protective conductor current
– Touch current
– Evidence of safe disconnection from the power supply circuit
(SELV and PELV)
– Evidence of the effectiveness of other safety devices
– Final inspection of the inscriptions
– Function test
If the device to be tested cannot be disconnected from the electrical system,
then proceed as follows:
– Visual inspection
– Measure the protective conductor resistances for protective class I
devices and
– Measure the touch current on touchable, conductive parts of protective
class II devices and touchable, conductive parts of protective class I
devices that are not connected to the protective conductor.
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
General information on DIN VDE 0701-0702:2008-06
If the memory card or the internal memory needs to be fully erased, then
press the [delete] function button (Fig. 12) in the configuration menu
(Page 2) and confirm the confirmation prompt.
Caution! The [delete] function permanently deletes all existing data
from the internal memory or the memory card.
Use the [internal copy –> MMC/SD] function button (Fig. 12) to copy
the internal memory to the memory card.
To read out the stored measurement results and create a test log - see the
operating manual of the PC software supplied with the tester.
By pressing the function key [lKalibr.] the date of last calibration of the
appliance tester is displayed and by pressing the function key [Version]
the firmware version of the hardware (Fig. 12).

8. Conducting tests:
Explanation of terminology
8.1 Touch current (IB)
Current that can flow to earth via the person handling the device (test object).
The measurement is carried out between touchable conductive parts of the
test object and the earth.
The measurement can either be made directly or with the differential current
method.
A direct measurement is applicable if the test object can be insulated from
earth.
In all other cases the differential current method should be used.
The touch current measurement is carried out on test objects in protection
class II with touchable conductive parts, or on test objects in protection
class I, which have touchable conductive parts that are not connected to the
protective conductor.
The measurement is to be carried out in both positions of the mains
plug – the reversal of polarity is automatic with the appliance tester
– extracting and reversing the mains plug is not necessary.
Also see measuring principle circuits on Page 19.
8.2 Differential current (ID)
In terms of the standards DIN VDE 0701-0702, this is the total instantaneous
values of all currents flowing through all active conductors on the mains
side connection of the device (test object).
The differential current method is a measuring method for determining
protective conductor current or touch current.
The total leakage current of a test object can be measured. This measuring
method must be applied if the test object cannot be insulated.
Also see measuring principle circuit M6 on Page 18.
Caution! The test object is supplied with mains voltage
during the test.
8.3 Device leakage current (IGA)
Current flowing to earth (PE) from the power supply via the protective
conductor and via touchable conductive parts of the housing and/or from the
applied part when applied parts are conductively connected to the housing
(DIN VDE 0751-1:2008-08).
Caution! The test object is supplied with mains voltage
during the test.
8.3.1 Substitute leakage current (IEA)
Current that would flow through the interconnected active conductors of the
device (test object) and the protective conductor or the touchable conductive
parts at rated voltage and rated frequency of the device.
This measuring method determines the leakage current without mains
voltage. It is an alternative measuring method for determining protective
conductor current or touch current.
Also see measuring principle circuit M4a on Page 18.
8.3.2 Substitute device leakage current (IEGA)
Device leakage current measured via the alternative measuring method
(new designation according to DIN VDE 0751-1:2008-08: Device leakage
current - alternative measurement ), see Image C4 (Page 50).
8.3.3 Device leakage current – Alternative measurement (IGA)
Device leakage current determined via the alternative measuring method
(previously designated as substitute device leakage current).
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Explanation of terminology

8.3.4 Substitute patient leakage current (IEPA)
Patient leakage current measured via the alternative measuring method
(new designation according to DIN VDE 0751-1:2008-08: Leakage current
from the applied part - alternative measurement), see Image C7 (Page 51).
8.3.5 Leakage current from the applied part – Alternative
measurement
Leakage current determined via the alternative measuring method
(previously designated as substitute patient leakage current).
8.3.6 Patient leakage current (IPA)
Current flowing from the applied part through the patient to earth, or current
caused by an unforeseen foreign voltage at the patient and which flows
through the patient and an applied part of Type F to earth (DIN VDE 0751-
1:2008-08). In the latest issue of DIN VDE 0751-1, the leakage current from
the applied part is measured instead of the patient leakage current.
8.3.7 Leakage current from the applied part
Current flowing from the power supplies and touchable conductive parts to
the applied part.
8.3.8 Patient leakage current – Mains voltage at the applied part
Patient leakage current determined by applying an auxiliary voltage
between the mains protective conductor (and housing parts) and the applied
part (new designation according to DIN VDE 0751-1:2008-08: Leakage
current from the applied part - mains voltage at the applied part).
8.3.9 Leakage current from the applied part – Mains voltage at the
applied part
Leakage current determined by applying an auxiliary voltage between the
mains protective conductor (and housing parts) and the applied part
(previously designated as patient leakage current - mains voltage at the
applied part).
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Explanation of terminology
8.4 Insulation resistance (RISO)
Ohmic resistance between the conductive parts separated by insulation.
Measurements are taken between the active parts and the body as well as
touchable conductive parts that are not connected to the protective
conductor.
Also see measuring principle circuits on Page 17.
8.5 Protective measures
When defining the test procedures, a distinction is no longer made according
to the protection class as previously but rather the existing protective
measures of the test object are taken into consideration and their
effectiveness at the respective touchable conductive part is to be verified.
The appliance tester makes the following classifications:
8.5.1 Devices with a protective earth connector (PC I)
The active parts of the device are protected against direct touching by the
basic insulation. Through connection of the touchable conductive housing
parts to the protective conductor, these are included in the protective
measure in the case of indirect touching (fault protection) with the system.
The residual current is measured via the protective conductor current
measurement.
The device may also have touchable conductive parts that are not
connected to the protective conductor. The residual current is measured via
the touch current measurement.
The device has a protective conductor connection (earthed plug).

8.7 Protective conductor resistance (RPE)
Resistance between any conductive touchable parts, connected to the
protective conductor for protective purposes, and the earthed contact of the
mains plug, the device plug or the protective conductor, which is constantly
connected to the mains power supply.
During the measurement of the protective conductor resistance, the connecting
cable should be moved, section by section, along its whole length. This
measuring method only applies for devices of protection class I.
Also see measuring principle circuit M1 on Page 17.
8.8 Visual inspection
Testing in accordance with DIN VDE 0701-0702 also requires visual
inspection of the device.
According to the standard, the devices should be inspected for external
defects (without opening the device) and, as far as possible, for suitability to
the place of installation. In particular, attention should be paid to the
following:
– Damage to the housing
– Defects of the cord connector guard and strain relief fittings
– External damage of the connecting cables
– Unauthorised interference and changes
– Signs of overloading and improper use
– Orderly condition of the protective covers
– Safety impairing soiling and corrosion
– Unblocked cooling vents
– Existence of necessary air filters
– Leak tightness, pressure relief valve
– Legibility of safety-related inscriptions
– Fuse links in accordance with manufacturer’s specifications
Externally visible defects, which could lead to a mechanical
or fire hazard should be repaired immediately.
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Explanation of terminology
8.5.2 Devices without a protective earth connector (PC II)
The active parts are separated by strengthened or double insulation (basic
insulation and additional insulation). This ensures protection against direct
contact.
Protection against indirect contact is also given, since an insulation fault is
practically impossible. Such devices can nevertheless have touchable
metallic housing parts. Devices of protection class II have a mains plug
without an earth contact.
8.5.3 Devices connected to protective extra-low voltage electric
circuits (PC III)
Devices of protection class III are exclusively connected to protective extra-
low voltage electric circuits - SELV / PELV.
The protection against dangerous body currents is achieved by the low
voltage and the safe separation from other electric circuits.
8.6 Protective conductor current (IPE)
Current that flows through the protective conductor of protection class I
devices (test objects) when their bodies are insulated from earth.
A direct measurement is applicable if the test object can be insulated from
earth.
In all other cases the differential current method should be applied, see Point
6.3 (Basic settings of the tester, Page 10).
Also see measuring principle circuits on Page 18.
Caution! The test object is supplied with mains voltage
during the test.

9. Conducting tests in accordance with DIN VDE 0701-0702:
Definition of standards
The sequence of tests is specified in the standard.
9.1 Visual inspection
The test objects are inspected for externally visible defects.
9.2 Measuring the protective conductor resistance
(for devices of protection class I)
The limit value is:
0.3 ΩΩ
ΩΩ
Ωfor devices with connecting cables up to 5 m,
plus 0.1 Ωfor every extra 7.5 m, up to a maximum of
1.0 Ω.
9.3 Measuring insulation resistance
The limit value is:
1 MΩΩ
ΩΩ
Ωfor devices of protection class I
2 MΩΩ
ΩΩ
Ωfor devices of protection class II 1)
0.25 MΩΩ
ΩΩ
Ωfor devices of protection class III
0.3 MΩΩ
ΩΩ
Ωfor devices of protection class I
with switched-on heating elements 2)
1) Alsoappliesfortouchableconductive parts oftestobjectsinprotectionclassI that arenot
connectedtotheprotectiveconductor.
2) Iftherequiredinsulationresistance is notachievedinthecaseoftest objects inprotection
class I with heating elements with a total capacity e“ 3.5 kW, the test object is nevertheless
ratedasfaultless iftheprotectiveconductorcurrentdoesnotexceedthe limitvalues.
Measuringprinciplecircuit
ProtectiveconductorresistancePCI,DiagramM1
Appliancetester
Test object
Test line
Measuringprinciplecircuit
Insulationresistance PC I, Diagram M2 PCII and III, Diagram M3
Appliancetester
Test object
Test line
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Conducting tests in accordance with DIN VDE 0701-0702 – Definition of standards
Socket
´Probe´ Test socket
Test line Test socket Test socket
Socket
´Probe´ Socket
´Probe´

9.4.1 Measuring the protective conductor current
(with devices of protection class I)
The limit value is 3.5 mA.
Theprotectiveconductorcurrentfor testobjectswithheatingelementshavingatotal
connectedpowergreaterthan3.5kWmustnotbegreaterthan1mA/kWheatingpower,
uptoamaximumvalueof10mA.Theprotectiveconductorcurrentcan eitherbe
measureddirectlywiththesubstituteleakagecurrentmethodorwiththedifferential
currentmethod.
Protectiveconductorcurrent–differentialcurrentmethodPCI,DiagramM6
Measuringprinciplecircuits
Protectiveconductorcurrent–substituteleakagecurrentmethodPCI,DiagramM4a
Appliancetester
Test object
Protectiveconductorcurrent–directmeasurementPCI,DiagramM5
Appliancetester
Test object
Caution! The test object is supplied with mains voltage
during the test!
Appliancetester
Test object
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Conducting tests in accordance with DIN VDE 0701-0702 – Definition of standards
Test socket
Test socket
Test socket
Insulatedinstallation
In the case of test objects in PC I with touchable conductive parts
that are not connected to the protective conductor, an additional
touch current measurement must be carried out according to PC II
(see Diagram 1 on Page 20).

9.4.2 Measuring touch current
(for devices of protection class II)
The limit value is 0.5 mA
Thetouchcurrentcaneitherbemeasureddirectlywiththesubstituteleakagecurrent
methodorwiththedifferentialcurrentmethod.Thismeasurementmustalsobecarried
outondevicesofprotectionclassIwithtouchableconductiveparts.
9.5 Inspecting the inscriptions
Safety-related inscriptions must be controlled and, where necessary,
renewed or supplemented in suitable form.
9.6 Function test
After completion of the electrical test, a function test shall be carried out on
the test object. A partial test can be sufficient.
9.7 Documentation
Once a test is passed, it must be documented in a suitable form. If a test
object proves to be unsafe, this should be clearly indicated on the device
and the operator informed in writing. Recording the measured values and
the changes is recommended.
Measuringprinciplecircuits
Touchcurrent–substituteleakagecurrentmethodPCII,DiagramM4b
Touchcurrent:
DirectmeasurementPCI, DiagramM8b DirectmeasurementPCII,Diagram M8a
Caution! The test object is supplied with mains voltage
during the test!
Appliancetester
Test object
Test line
Appliancetester
Test line
Test object
Test object
Test line
Appliancetester
Measurementofalltouchableconductivepartsofthetest
objectthatarenotconnectedtotheprotectiveconductor
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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Conducting tests in accordance with DIN VDE 0701-0702 – Definition of standards
Test socket
Insulatedinstallation
Test socket
Socket
´Probe´
Socket
´Probe´
Test socket
Socket
´Probe´
Insulatedinstallation

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Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Test procedure in accordance with DIN VDE 0701-0702
9.8 Diagram 1
Test procedure for devices
with protective conductor (PC I)