MI 3311 GammaGT
Single test
30
5.2.2 Earth continuity resistance
This test ensures that the connections between the protective conductor terminal in the
mains plug of the device under test and earthed accessible conductive parts of the device
under test are satisfactory and of sufficiently low resistance. This test has to be performed
on Class I (earthed) appliances. The instrument measures the resistance between:
Mains test socket‘s PE terminal and the S/EB1 terminal.
Figure 5.4: Earth continuity menu
Test parameters for Earth continuity resistance measurement
LIMIT
Maximum resistance
[0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
]
TIME
Measuring time
[2 s, 5 s, 10 s, 30 s, 60 s, 120 s, --- s]
Test circuits for earth continuity resistance measurement
Figure 5.5: Measurement of Earth continuity resistance
Earth continuity resistance measurement procedure
Select the EARTH CONT. function.
Set the test parameters.
Connect device under test to the instrument (see figure 5.5).
Press the TEST key for measurement.
Store the result by pressing MEM key (optional).
Figure 5.6: Examples of Earth continuity resistance measurement results
Displayed results:
Main result ............. Earth continuity resistance
Note:
Consider displayed warnings before starting measurement!
