3�3�- Sensors For Current Measurement; 3�3�1�- Wibeee Max - Circutor Wibeee Max Instruction Manual

3.3.- SENSORS FOR CURRENT MEASUREMENT
3�3�1�- Wibeee Max
In the Wibeee Max model, current measurement is performed using the FLEX Wibeee 25 flex-
ible sensors.
Measurement scales
Nominal range
Output / input ratio
Range of use
Specified measurement range
Typical phase difference
The measurement uncertainty is for the sensor in its optimal position, with no external electric
or magnetic fields and within the working temperature range,
Note : Circutor also has the model of flexible sensors, FLEX Wibeee 14, with the same metro-
logical characteristics of the FLEX Wibeee 25 model, but with a length of 14 cm.
10
Magnitude of Influence
Temperature
Relative humidity
Conductor position
Adjacent conductor
Set to 50 Hz
Set to 60 Hz
Frequency
Deviation 50 Hz - 60 Hz
Table 3:Metrological characteristics�
FLEX Wibeee 25
350
350 A
2.86 mV/A
3.5 ... 350 A
35 ... 350
1st
Table 4:Position error
Position
A
B
A
B
Table 5: Variations in range of use�
Variations in range of use
Range of influence
- 10ºC ... +60ºC
10% ... 90%
-
D/4 300 A
Full scale
Full scale
40 Hz - 5 kHz
-
700
700 A
1.43 mV/A
7 ... 700 A
70 ... 700
1st
Table 4�
Error
± 1%
A ± 3%
Typical Maximum
- ±0.3 % / ºC
- 0.3 %
2 %
-
0.2 % 0.3 %
0.2 % 0.3 %
< ± 1 dB < ± 1 dB
- 0.3 %
Instruction Manual
Wibeee Max
3 %
2 %