Benning IT 115 - Page 40

BENNING IT 115 Device description
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Example of the test steps:
Step 1 Step 2
Step 3 Step 4
Step 5 Step 6
Step 7 Step 8
Figure 5.21: Test steps of the automatic test
Top Bottom
Figure 5.22: The "HELP" key toggles between the upper
and the lower part of the result field.
Results displayed:
x1 ......... step 1 tripping time (I

=I
N
, 0º)
x1 ......... step 2 tripping time (I

=I
N
, 180º)
x5 ......... step 3 tripping time (I

=5I
N
, 0º)
x5 ......... step 4 tripping time (I

=5I
N
, 180º)
x½ ........ step 5 tripping time (I

=½I
N
, 0º)
x½ ........ step 6 tripping time (I

=½I
N
, 180º)
I ........... step 7 tripping current (0º)
I ........... step 8 tripping current (180º)
Uc ........ contact voltage for nominal value I
N
Notes:
 The automatic test will be stopped immediately, if any invalid condition is detected, e.g.
exceedance of the maximum admissible contact voltage or a tripping time outside the
admissible range.
 During the automatic testing of RCDs of the types A and F with nominal tripping
differential currents of 300 mA, 500 mA and 1000 mA, the test of 5I

N will not be
carried out. In this case, the test shall be passed, if all other test have been passed.
 The tripping current measurement (I , steps 7 and 8) is not carried out for selective
RCDs.