METREL EasiTEST MI 2087 AL2 - Page 27

MI 2087 AL2 EasiTEST Measurement instructions
27
Fig. 20: Fourth test is running (left figure), 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 next figure 21, 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).
Fig. 21: Fifth test is running (left figure), rcd message displayed after tripping out
RCD (right figure)
After reswitching RCD, sixth test will follow automatically.
6
th
test
Trip-out time measurement, using test current Itest = 5I∆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 sixth test (RCD trips within allowed time
period) will be followed by the result of the sixth test; see the figure below (right side).
Fig. 22: Sixth test is running (left figure) and result of the sixth test (right figure)