GMW TG euro 1, Operating Manual

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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 VDE 0751-1/EN 62353, Example 4 - Devices with protective conductor (PC I) and applied part of type B
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16.1 Visual inspection
The [next] button takes you to the first stage of the test, the visual
inspection (Fig. 101).
The housing, connecting cable, inscriptions and other parts should be inspected
in this test. You confirm positive results of the visual inspection by pressing the
appropriate buttons – the display changes from „not OK“ to „OK“.
Please note: The visual inspection screen is not displayed in
„Expert mode“
For all subsequent tests, the test object must be switched on.
Pressing the [next] button displays an operating note and then the device
enters the protection conductor resistance test (Fig. 102).
16.2 Protective conductor resistance
The limit value is:
– 0.5
Ω Ω
Ω Ω Ω
for ME systems with multi-outlet power strips, between the
protective conductor of the mains plug of the multi-outlet power
strip and all touchable conductive parts of the ME system mains
cable
– 0.3
Ω Ω Ω Ω Ω
for devices with a fixed mains cable (or for devices with
removable mains cable on devices with a fixed mains cable)
– 0.2
Ω Ω Ω Ω Ω
for devices with a removable mains cable (between the protective
contact of the device plug and the touchable conductive parts)
Fig. 101
f
Fig. 102 Fig. 103
f
The [next] button takes you to the first electrical test: the protective
conductor resistance (Fig. 103).
The measured value is displayed in large text in the middle of the screen.
The star sign on the left side of the display blinks when the
measuring process is running (the values are being measured).
The [OK] button appears when the measured value is determined.
The corresponding limit value „Lv“ and the momentary test current (+) are
also displayed.
You can display the help screen by pressing the [help] button. A measuring
principle circuit corresponding to the figure in this operating manual and a
short help text are displayed. After pressing the [End] button you return to
the measuring display.
In the next stage the polarity of the test current (–) is reversed and the
protective conductor resistance is measured again.
During the measurement, the connecting cable of the test object
should be moved, section by section, along its whole length, in
order to find broken conductors or weak points.