Glossaire - Chauvin Arnoux C.A 6456 Notice De Fonctionnement

4.5.6 WARNINGS OR ERROR REPORTS (
Preliminary remark: The complete list of coded errors is given in § 7.
Display - Indication
Er18
Prob
Press the TEST key to exit from the error conditions.
Hz
I
I
ALARM
I ; I ; I
KLN KLPE KNPE
I
SEL
L
E
L ; L ; L
LN LPE NPE
R
∆ ∆ ∆ ∆ ∆ L
R
∆ ∆ ∆ ∆ ∆ N
R
∆ ∆ ∆ ∆ ∆ PE
R
L ALARM
R ; R ; R
LN LPE NPE
R
P
U
F
U
L
U
LN
U
LPE
U
NPE
U
P
U
REF
Z
E
Z ; Z ; Z
LN LPE NPE
Z
L ALARM
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)
Remark - cause
The clamp is not connected: the measurement is impossi

5. GLOSSAIRE

:
frequency of the signal
:
current
:
current threshold
:
short-circuit current between terminals L and N, L and PE, and N and PE
:
current flowing in the current probe during a selective earth
measurement in a live condition
:
inductive part of Z
E
:
inductive part of impedance Z
:
compensation of the cable in terminal L
:
compensation of the cable in terminal N
:
compensation of the cable in terminal PE
:
resistance impedance threshold
:
real part of impedance Z
LN
:
resistance of the auxiliary rod in a earth measurement in a live condition
:
fault voltage as per standard NF EN 61557
:
conventional limit contact voltage: 25 or 50V, adjustable in the "SET-
UP" mode (see § 3.2)
: voltage between terminals L and N
:
voltage between terminals L and PE
:
voltage between terminals N and PE
:
voltage between the voltage probe/auxiliary rod and PE
:
reference voltage for calculation of the short-circuit current
:
global earthing impedance
:
impedance of the loop between L and N, between L and PE, and
between N and PE
loop impedance threshold
:
77
, Z , Z
LN LPE NPE
, Z , Z
LPE NPE