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The preset value of the test voltage for the R
ISO
measurement is 500V. This
voltage can be reduced to 250 V DC with the button (5), if needed. The selected
test voltage appears briefly on the display then. By pressing the button (5)
again, test voltage will be set back to 500 V DC.
• Switch on the DUT.
• Start the automatic test by pressing button (3).
• If “LO LOAD” appears on the display, should be checked if DUT is switched on.
• If the DUT is on but the load R
L-N
> 6 kΩ, press the button (3) to proceed with
the test sequence.
•
Very high load (R
L-N
< 14 Ω, ILOAD > 16 A) from the DUT is presented by “HIGH
LOAD” on the display. In such a case, there is a risk of short-circuit. Should be
checked connection between L) and N of DUT.
• If there is no short-circuit, press button (3) to proceed with the test sequence.
• Beside the R
ISO
value will be shown a tick symbol (f the R
ISO
is higher than the permissible minimum value).
Contact current measuring using the direct measurement method (Touch Leakage Current)
• After the R
ISO
measurement GT-6000 v2 stops the test sequence and prompts
the user to switch the mains voltage from 230 V to the test socket (“I
LEAK
” symbol
flashes).
• Contact current measuring using the direct measurement method (Touch
Leakage Current) starts by (short) pressing pushbutton (4) if the mains voltage
is correct.
Note:
Extended version of this test is started by (long) press to the
pushbutton (4).
• During testing, DUT should be switched on and active.
Step 1 (of 2):
• After a measurement time of 5 seconds, the polarity (mains) is reversed after
5 sec. and the protective conductor current is measured with the reverse mains
voltage (“L/N” - “N/L”). The higher value of both measurements is shown.
