Glossary - Chauvin Arnoux C.A 6030 Manual De Instrucciones

: frequency of the signal
H
Z
I : current
: current threshold
I
ALARM
I : effective operating current of the RCD (sweep test).
A
nominal rating of the residual current device to be tested
I :
∆
N
: short-circuit current between terminals L and N, L and PE, and N and PE
I ; I ; I
KLN KLPE KNPE
I. : test current in the test of an RCD without triggering
ntP
: inductive part of impedance Z
L ; L ; L
LN LPE NPE
: Acronym for a Residual Current Device
RCD
R : compensation of the cable in terminal L
∆
L
compensation of the cable in terminal N
R :
∆
N
R compensation of the cable in terminal PE
:
∆
PE
: global earthing resistance
R
E
resistance impedance threshold
R
:
L ALARM
: real part of impedance Z
R ; R ; R
LN LPE NPE
: resistance of the auxiliary rod in a earth measurement in a live condition
R
P
T : effective duration of triggering of the RCD (pulse test).
A
U : fault voltage as per standard NF EN 61557
F
U : fault voltage referred to I
Fn
in the case of the test of RCDs.
U : conventional limit contact voltage: 25 or 50V, adjustable in the "SET-UP"
L
mode (see § 3.2)
U : voltage between terminals L and N
LN
: voltage between terminals L and PE
U
LPE
U : voltage between terminals N and PE
NPE
: voltage between the voltage probe and PE
U
P
U : reference voltage for calculation of the short-circuit current
REF
impedance of the loop between L and N, between L and PE, and
:
Z ; Z ; Z
LN LPE NPE between N and PE
loop impedance threshold
Z :
L ALARM

5. GLOSSARY

, Z
LN LPE
, Z , Z
LN LPE NPE
calculated before applying the tripping current
? N
74
, Z
NPE