COMBI521
EN - 96
21. Connect the instrument to the adapter as shown in the
diagram on the display (input
B4
to input
N
, input
B3
to
input
E
and input
B1
to input
L3
).
Use the three
selectors of the adapter and set the following
positions
:
PP State
NC
CP State
A
Fault
OK
M
15/10 – 18:04
2/6 – L3 Insulation test
22. Press the
GO/STOP
key on the instrument. The
instrument starts the automatic test sequence of
insulation resistance among
L3-N
,
L3-PE
and
N-PE
respectively, and displays the message "
Measuring...
".
The instrument displays the message "
OK
" in case of a
positive result of the tests (value higher than the set
minimum threshold).
M
15/10 – 18:04
RL1-N >
999 M
Vt = 514 V
RL1-PE > 999 M
Vt = 511 V
RL2-N =
250 M
Vt = 517 V
RL2-PE > 999 M
Vt = 514 V
RL3-N =
- - - M
Vt = - - - V
RL3-PE = - - - M
Vt = - - - V
RN-PE = - - - M
Vt = - - - V
OK
AUTO 500V 1.00M
MODE
Vtest Lim.
23.
Press the
SAVE
key to partially save the test, and to carry on with the subsequent test
(no. 26).
24.
The instrument displays the message "
FAIL
" in case of a
negative result of at least one test (value lower than the
set minimum threshold).
M
15/10 – 18:04
RL-N
=
0.01M
Vt
=
523 V
RL-PE > 999 M
Vt = 525 V
RN-PE > 999 M
Vt = 524 V
FAIL
AUTO 500V 1.00M
MODE
Vtest Lim.
25. Press the
SAVE
key to partially save the test and to
end
the sequence of tests
. The instrument shows the
message contained in the following screen for a few
seconds.
Repeat the sequence again, if necessary.
M
15/10 – 18:04
Sequence completed
AUTO 500V 1.00M
MODE
Vtest Lim.