COMBI521
EN - 15
5. Press the
GO/STOP
key on the instrument or the
START
key on the remote switch
probe. The instrument will start the automatic test sequence.
CAUTION
If message “
Measuring…
” appears on the display, the instrument is
performing measurement. During this whole stage, do not disconnect the
test leads of the instrument from the mains.
6. The
Ra
test starts and the screen to the side appears on
the display. After
approx. 20s
, the
Ra
ends and the
values of
Z
L-N,
Z
L-PE,
I
SCMin,
I
FCMin
immediately appear on
the display.
In case of a
positive
result of all the tests sequentially
performed as
Ra
(
Z
L-N
and
Z
L-PE
<199
), the instrument
goes on with the test on the trip-out current and trip-out
time of the RCD.
A U T O
15/10 – 18:04
T N
>
<
I s c = 1 4 3 7 A Z L - N = 0 . 1 6
Ω
I f c = 1 2 7 7 A Z L - P E = 0 . 1 8
Ω
T r c d = - - - m s I r c d = - - - m A
F R E Q = 5 0 . 0 0 H z U t = - - - V
V L - P E = 2 3 1 V V L - N = 2 3 2 V
M e a s u r i n g . . .
30mA
500V
1.00M
I
n
Type Vtest Lim
7. The
RCD
test starts and the screen to the side appears
on the display. The trip-out current and the trip-out time
values appear on the display.
In case of a
positive
result of all the tests sequentially
performed during the RCD test (
Trcd
and
Ircd
parameters) (see § 12.4), the instrument goes on with the
test on insulation resistance between L-N, L-PE and N-
PE conductors.
A U T O
15/10 – 18:04
T N
>
<
I s c = 1 4 3 7 A Z L - N = 0 . 1 6
Ω
I f c = 1 2 7 7 A Z L - P E = 0 . 1 8
Ω
T r c d = 2 5 m s I r c d = 2 7 . 0 m A
F R E Q = 5 0 . 0 0 H z U t = 1 . 5 V
V L - P E = 2 3 1 V V L - N = 2 3 2 V
M e a s u r i n g . . .
30mA
500V
1.00M
I
n
Type Vtest Lim
8. The insulation test starts and the screen to the side
appears on the display. The RL-N, RL-PE and RN-PE
values appear on the display.
In case of a
positive
result of all the tests sequentially
performed during the insulation test (insulation resistance
> minimum limit threshold), the instrument has completed
its tasks, shows the “OK” message and displays the
screen to the side.
Press (
,
) in order to display the values of the second
available page.
A U T O
15/10 – 18:04
T N
>
<
R L - N > 9 9 9 M
V t = 5 2 3 V
R L - P E > 9 9 9 M
V t = 5 2 4 V
R N - P E > 9 9 9 M
V t = 5 2 2 V
F R E Q = 5 0 . 0 0 H z U t = 1 . 5 V
V L - P E = 0 V V L - N = 0 V
O K
30mA
500V
1.00M
I
n
Type Vtest Lim