79
Characteristics of the fault voltage calculation (U
f
):
The device displays the value of the fault voltage for current I
D
.
In the case of a loop measurement Z
S
, U
F
is calculated as follows:
U
F
= R
PE
x I
D
In the case of a loop measurement on a live circuit in tripping mode (TRIP), U
F
is calculated as follows:
U
F
= Z
A
x I
D
In the case of a loop measurement on a live circuit in non-tripping mode, U
F
is calculated as follows:
U
F
= R
A
x I
D
Where I
D
is itself defined as follows:
I
D
= I
D
N
x K x Q
With K: multiplier, from among the following seven possible values: 0.2 ; 0.3 ; 0.4 ; 0.5 ; 1 ; 2 ; 5
Q: coefficient linked to the form factor at current I
D
N
(coefficient from standard IEC 61008) :
if the form factor is of the half-wave type AND if I
D
N
> 10 mA, then Q = 1,4
if the form factor is of the half-wave type AND if I
D
N
≤
10 mA, then Q = 2
Measurement range
5.0 - 70.0 V
Resolution
0.1 V
Intrinsic uncertainty
± (10% + 10 ct)
Summary of Contents for C.A 6116
Page 1: ...C A6116 Installation TESTER E N G L I S H User s manual...
Page 95: ...95...
