METREL MI 3122 Instruction Manual page 28

MI 3122 Smartec Z Line-Loop / RCD
RCD autotest procedure
RCD Autotest steps
Select the
RCD

Set sub-function AUTO.

Set test parameters (if necessary).

Connect test cable to the top of the instrument.

Connect test leads to the item to be tested (see figure 5.2 ).

Press the TEST key to perform the test.

, 0  (step 1).
Test with I

N
Re-activate RCD.

, 180  (step 2).
Test with I

N
Re-activate RCD.

Test with 5  I , 0  (step 3).

N
Re-activate RCD.

Test with 5  I , 180  (step 4).

N
Re-activate RCD.

Test with ½  I  N, 0  (step 5).

Test with ½  I  N, 180  (step 6).

Trip-out current test, 0  (step 7).

Re-activate RCD.

Trip-out current test, 180  (step 8).

Re-activate RCD.

Store the result by pressing the MEM key (optional).

Result examples:
Step 1
Step 3
function using the function selector switch.
28
Testing RCD
Notes
Start of test
RCD should trip-out
RCD should trip-out
RCD should trip-out
RCD should trip-out
RCD should not trip-out
RCD should not trip-out
RCD should trip-out
RCD should trip-out
End of test
Step 2
Step 4