MARTINDALE ET4500 - RCD Autotest Function; RCD Autotest Procedure

Martindale ET4000 / ET4500 Measurements
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5.4.4 RCD Autotest
The RCD autotest function is intended to perform a complete RCD test (trip-out time at
different residual currents, trip-out current and contact voltage) in one set of automatic
tests, controlled by the instrument.
Additional key:
HELP Click
Toggles between top and bottom part of results
field.
Keep pressed for 1s
Enters Help screen
RCD autotest procedure
RCD Autotest steps Notes
 Select the RCD function using the function selector
Switch.
 Set sub-function to AUTO using UP / DOWN keys.
 Set test parameters (if necessary).
 Connect the test cable to the instrument.
 Connect the test leads to the wiring of the RCD to be
tested (see Figure 5.19).
 Press the TEST key to perform the test. Start of test
 Test with I

N
, 0 (step 1).
RCD should trip-out
 Re-activate RCD.
 Test with I

N
, 180 (step 2).
RCD should trip-out
 Re-activate RCD.
 Test with 5I

N
, 0 (step 3).
RCD should trip-out
 Re-activate RCD.
 Test with 5I

N
, 180 (step 4).
RCD should trip-out
 Re-activate RCD.
 Test with ½I

N
, 0 (step 5).
RCD should not trip-out
 Test with ½I

N
, 180 (step 6).
RCD should not trip-out
 Trip-out current test, 0 (step 7).
RCD should trip-out
 Re-activate RCD.
 Trip-out current test, 180 (step 8).
RCD should trip-out
 Re-activate RCD.
 Store the result, if required, by pressing the MEM key
(ET4500 only).
End of test
Result examples:
Step 1 Step 2