Chauvin Arnoux C. A 6410 Notice De Fonctionnement page 45

Variations in the nominal working range
Distortion
quantity
Temperature
Relative humidity
Battery voltage
Conductor position
Clamp position
Proximity of
magnetic mass
Magnetic field
50 ... 60 Hz
Electric field
50 ... 60 Hz
Frequency
Interference current
50 ... 60 Hz in
the loop
Crest factor
* The class corresponds to the accuracy in the reference range (see preceding
table).
Example : a 10°C variation in the ambient temperature, when within the limits of the
operating range for a 250 W measurement, has a typical influence of:
** Noise is displayed for the approximate values greater than 5 A or 50 V (50 to 60 Hz)
in the loop.
Limit of Distorted
operating
range
- 10 °C to
+ 55°C
10 % RH to
90 % RH
6.5 to 9.5 V
from edge
to centre
± 180 °
1mm steel plate
against jaw face
400 A/m
0 ... 10 kV/m
47 ... 800 Hz
5 A / 50 V in
the loop **
1.4 to 2.5
with I peak
2.5 to 5 less than 50 A
[0.05 x (± 6 %) x 250 W ] ± 5 W
quantity
typical
W and A 0.05 W + 0.5 class 0.05 W + 1.5 class of
per 10°C
W and A 0.5 class
W and A 0.1 class
W and A 0.05 class
0.25 class
0.1 class
W
W and A 0.1 class
W and A 0.1 class
A 1 class
3 %
W
A 1 class
2 classes
= 7.55 W ± 5 W
45
Distortion *
Max.
accuracy per 10°C
1 class
0.25 class
0.1 class
0.5 class
0.25 class
0.25 class
0.25 class
2 classes
5 %
For I = 1 A
With R measured = 30 W
(30 V in the loop)
1.5 classes
2.5 classes