MI 2087 AL2 EasiTEST
Measurement instructions
26
2
nd
test
Trip-out time measurement, using test current Itest = I
∆
n/2, at negative start polarity of
test current (180°). Tested RCD should not trip, the following display message will
appear for a while:
Fig. 18:
Second test is running
Successfully ended second test (RCD does not trip) will automatically be followed by
the third one.
3
rd
test
Trip-out time measurement, using test current Itest = I
∆
n, at positive start polarity of
test current (0°). The display message, presented on left side of figure 19 will appear
for a while. Successfully ended third test (RCD trips within allowed time
period) will be followed by rcd message, informing the operator to reswitch the RCD;
see the figure below (right side).
Fig. 19:
Third test is running (left figure),
rcd
message displayed after tripping out
RCD (right figure)
After reswitching RCD, fourth test will follow automatically.
4
th
test
Trip-out time measurement, using test current Itest = I
∆
n, at negative start polarity of
test current (180°). The display message, presented on left side of figure 20, will
appear for a while. Successfully ended fourth test (RCD trips within allowed time
period) will be followed by rcd message, informing the operator to reswitch the RCD;
see the figure below (right side).
t2
........ Test 2
