MI 2087 AL2 EasiTEST
Measurement instructions
23
3.5 RCD – Trip-out current
For general information concerning Trip-out current measurement, refer to enclosed
handbook
Measurements on electric installations in theory and practice
.
How to carry out the measurement?
Step 1
q
Connect universal test cable
to EasiTest.
q
Set function switch to
RCD RAMPTEST
position,
Trip-out current initial
menu
will be displayed; see the figure below.
Fig. 15:
Trip-out current initial menu
Step 2
Select
nominal differential current I
∆
n
as follows:
q
Press the
SELECT
key, last set nominal differential current starts to blink.
q
Select appropriate value using the
▲
and
▼
keys. The following values are
available to be selected: 10mA, 30mA, 100mA, 300mA, 500mA or 1000mA.
Step 3
q
Connect test cable to tested object (mains outlet or other test terminals),
according to the figure 12. (Universal test cable).
Step 4
q
Press the
START
key and release it (double click to
START
key will change
positive start polarity of test current to negative one; see the figure 14).
Measurement will be carried out and result displayed afterwards.
q
Check contact voltage at trip-out current, trip-out time at trip-out current and set
limit contact voltage by using the
DISPLAY
key.
G ........ Standard (
G
eneral) type of
RCD is selected.
S
is
displayed if Selective
type is selected.
∼
......... Start polarity of test current.
