71
4.5.6 WARNINGS OR ERROR REPORTS (
)
Preliminary remark:
The complete list of coded errors is given in § 7.
Display – Indication
Remark - Cause
The clamp is not connected: the measurement is
impossible
Press the TEST key to exit from the error conditions.
5 GLOSSARY
H
Z
:
frequency of the signal
I
:
current
I
ALARM
:
current threshold
I
KLN
; I
KLPE
; I
KNPE
:
short-circuit current between terminals L and N, L and PE, and N and PE
I
SEL
:
current flowing in the current probe during a selective earth measurement in a live
condition
L
E
:
inductive part of Z
E
L
LN
; L
LPE
; L
NPE
:
inductive part of impedance Z
LN
, Z
LPE
, Z
NPE
R
∆
∆∆
∆
L
:
compensation of the cable in terminal L
R
∆
∆∆
∆
N
:
compensation of the cable in terminal N
R
∆
∆∆
∆
PE
:
compensation of the cable in terminal PE
R
L ALARM
:
resistance impedance threshold
R
LN
; R
LPE
; R
NPE
:
real part of impedance Z
LN
, Z
LPE
, Z
NPE
R
P
:
resistance of the auxiliary rod in a earth measurement in a live condition
U
F
:
fault voltage as per standard NF EN 61557
U
L
:
conventional limit contact voltage: 25 or 50V, adjustable in the "SET-UP" mode (see § 3.2)
U
LN
:
voltage between terminals L and N
U
LPE
:
voltage between terminals L and PE
U
NPE
:
voltage between terminals N and PE
U
P
:
voltage between the voltage probe/auxiliary rod and PE
U
REF
:
reference voltage for calculation of the short-circuit current
Z
E
:
global earthing impedance
Z
LN
; Z
LPE
; Z
NPE
:
impedance of the loop between L and N, between L and PE, and between N and PE
Z
L ALARM
:
loop impedance threshold
Er18
Prob
Summary of Contents for C.A 6454
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