Martindale ET4000 / ET4500 Measurements
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5.3.1 Continuous resistance measurement
The continuity measurements are performed with automatic polarity reversal of the test
voltage in accordance with BS EN 61557-4.
Test circuits for continuity measurements
r1 – line continuity
rN – neutral continuity
r2 – circuit protective conductor (cpc)
continuity
R1+RN – line and neutral continuity
Figure 5.10: Connections for testing the r1, rN, r2 and R1+RN sections of the wiring in
ring circuits
R2 – circuit protective conductor (cpc)
continuity
R1+R2 – line and cpc continuity
Figure 5.11: Connections for testing the R2 and R1+R2 sections of the wiring in final
circuits
Temporary short
Temporary short
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