MI 2087 Instaltest 61557
Measurement instructions
36
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 the next figure, 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. 29.
Third test is running (left figure) and
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 the next figure, 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).
Fig. 30.
Fourth test is running (left figure) and
rcd
message, displayed after tripping
out RCD (right figure)
After reswitching RCD, fifth test will follow automatically.
5
th
test
Trip-out time measurement, using test current Itest = 5I
∆
n, at positive start polarity of
test current (0°). The display message, presented on left side of the next figure, will
appear for a while. Successfully ended fifth 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).
