Part III Appendix
Electrical Safety Maintenance 262
Electrical safety check
4-Protection ground impedance
5)
Press the soft key corresponding to START TEST to apply the test current and show the
impedance and current values. The test lasts about 5s.
6) Press the print key to print the latest measurements.
NOTE
When the impedance exceeds the standard value, no valid measurement result is obtained due
to an open-loop connection or because the tested object exceeds the measurement range. When
the read value exceeds 9.999 ohm, it is prompted that the value exceeds the standard value.
Fail
Stop using the device once its impedance reaches the limit. Check the protection ground
connections between the protection ground terminal and the protection ground metal shell and
equipotential pole. Perform the test again. If the device fails the test again, stop using the device
and notify customer service engineers to analyze or handle the problem.
Limit
All countries: R = 0.2 ohm (maximum value)
Electrical safety check
5-Ground leakage current test
Overview
Before performing other leakage current tests for the device, perform the ground leakage current
test.
Measure the leakage current as follows:
♦ Measure the ground leakage current from the ground terminal of the DUT.
♦ Measure the ground leakage current of the applied part (all grounded applied parts) from the
ground terminal of the DUT.
No test lead needs to be connected. The 601 PRO tester will automatically connect to the internal
measurement device.
Test process
Running the test
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