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3. CHARACTERISTICS
3.1. REFERENCE CONDITIONS
Quantity of influence
Reference values
Temperature
23 ± 5 °C
Relative humidity
20 to 75 % RH
Frequency of the signal measured
30 to 440 Hz
Type of signal
sinusoidal
Instrument turn-on time
1 minute
External electric field
null
External DC magnetic field (earth's field)
< 40 A/m
External AC magnetic field
null
Position of the conductor in the coil
centred
Shape of the measurement coil
circular, no applied stress
Input impedance of the display device connected
to the electronic unit
≥
1 M
W
3.2. ELECTRICAL CHARACTERISTICS
Model
Single-phase
17, 25 and 35 cm
Three-phase
25 cm
Range
3 A
▪ 30 A
▪ 300 A
▪ 3 000 A
▪ 30 A
▪ 300 A
▪ 3 000 A
Specified measurement range
0,5 … 3 A
▪ 2 … 30 A
▪ 5 … 300 A
▪ 50 … 3 000 A
▪ 5 … 30 A
▪ 5 … 300 A
▪ 50 … 3 000 A
Output/input ratio (mV~/A~)
1000
▪ 100
▪ 10
▪ 1
▪ 100
▪ 10
▪ 1
Maximum peak factor
1.5 at I
N
(I nominal)
Intrinsic uncertainty
(% of output signal)
≤1%
+ 40 mV
▪ ≤1% + 4 mV
▪ ≤1.5% + 0.4 mV (I<10% I
N
)
≤1% + 0.4 mV (I≥10% I
N
)
▪ ≤1.5%+ 0.04 mV (I<10% I
N
)
≤1% + 0.04 mV (I≥10% I
N
)
▪ ≤1% + 4 mV
▪ ≤1.5% + 0.4 mV (I<10% I
N
)
≤1% + 0.4 mV (I≥10% I
N
)
▪ ≤1.5%+ 0.04 mV (I<10% I
N
)
≤1% + 0.04 mV (I≥10% I
N
)
Max. offset voltage
0 mV
dc
Phase shift at 50 Hz
≤1° (0.5° typical)
Max. output voltage
‑ 4.5 Vpeak ≤ V ≤ + 4.5 Vpeak
