Chauvin Arnoux C.A 6116, Руководство пользователя

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59
4.6. CHECk of IntERnAl PRotECtIon DEvICEs
The device includes two internal protection devices that cannot be reset and that the user cannot replace. These devices act only
under extreme conditions (e.g. a lightning strike).
To check the condition of these protections:
SET UP
OFF
LOOP Z
S
03 / 07 / 2009 10 : 47
50 . 0 Ω 50 . 1 Hz
L-PE
V
L-N
V
N-PE
V
6 %
6 mA
Disconnect the input terminals.
If the internal protection devices are intact, the display should indicate:
Set the switch to Z
S
(R
A
/S
EL.
).
50 . 0 Ω 50 . 1 Hz
L-PE
0 . 0 V
L-N
V
N-PE
V
6 %
LOOP Z
S
03 / 07 / 2009 10 : 47
6 mA
50 . 0 Ω 50 . 1 Hz
L-PE
V
L-N
V
N-PE
0 . 0 V
6 %
LOOP Z
S
03 / 07 / 2009 10 : 47
6 mA
50 . 0 Ω 50 . 1 Hz
L-PE
0 . 0 V
L-N
0 . 0 V
N-PE
0 . 0 V
6 %
LOOP Z
S
03 / 07 / 2009 10 : 47
6 mA
If U
L-PE
does not display – x --, the
protection in the L terminal has been
activated.
If U
N-PE
does not display – x --, the
protection in the N terminal has been
activated.
Case where both protections have
been activated.
In these last three cases, the device must be sent in for repair (see §10.5).