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COMBITEST422
EN - 69
key on the remote switch probe or use the AutoStart
feature (see § 5.1.5). The instrument starts the
measurement and
the “
Measuring…
” message is shown
on the display. During this whole stage, do not disconnect
the measuring leads of the instrument from the system
under test. The following screen appears on the
instrument's display.
TT
R
A
Ut
=
=
- - -
- - -
V
FREQ. = 50.00Hz
VL-PE=232V
Measuring…
Ra
2Wire
30mA
FUNC
MODE
I
n
7. In case of
positive
result (
overall earth resistance R
A
<
(Utlim/I
n
)
, the “
OK
” message and the screen to the side
are displayed by the instrument. The screen contains the
contact voltage value on the secondary display.
L O O P
15/10
– 18:04
TT
R
A
Ut
=
=
346
10.4
V
FREQ. = 50.00Hz
VL-PE=232V
OK
Ra
2Wire
30mA
FUNC
MODE
I
n
8. In case of
negative
result (
overall earth resistance R
A
>
(Utlim/I
n
)
, the “
NOT OK
” message and the screen to
the side are displayed by the instrument. The screen
contains the contact voltage value on the secondary
display.
L O O P
15/10
– 18:04
TT
R
A
Ut
=
=
1765
>50
V
FREQ. = 50.00Hz
VL-PE=232V
NOT OK
Ra
2Wire
30mA
FUNC
MODE
I
n
9. Press the
SAVE
key to store the
test result in the instrument’s memory (see § 7.1) or
the
ESC/MENU
key to exit the screen without saving and go back to the main
measuring screen.
6.7.10. Verification of protection against indirect contacts (TN systems)
9. Press the
MENU
key, move the cursor to
LOOP
in the
L O O P
15/10
– 18:04