11.2 Insulation resistance
The limit value is:
2.0 M
Ω
(PC II)
If you have selected a test procedure with
insulation resistance
in the
„Settings for measuring“ screen, the measuring display for insulation
resistance measurement (Fig. 53) appears after you press the [next] button.
The magnitude of the test voltage is displayed as well as the measured
value (minimum of 500 V DC).
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.
By pressing the [help] button you go to a help display with the measuring
principle circuit and a help text.
11.3.1 Touch current (substitute leakage current)
The limit value is:
0.5 mA
This measurement must also be carried out on devices of
protection class I with touchable conductive parts that are not
connected to the protective conductor.
Press the [OK] button to go to the „Touch current“ measuring display. The
measurement is performed using the substitute leakage current principle
(when selected). Here, too, the corresponding limit value is displayed
beside the measured value (Fig. 54).
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.
A help display is also available if you press the [help] button.
Warning!
With the test procedure
without insulation resistance
, the
appliance tester measures the
touch current
with connection to
the
mains voltage
(direct method or according to the differential
current principle).
Fig. 54
Fig. 53
34
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, Example 2 – Devices without a protective conductor (PC II)
f
f
Fig. 52
