BENNING IT 115
Device description
- 40 -
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.
