AEMC MA114, Руководство пользователя

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AC Current Probe Model MA114
3. SPECIFICATIONS
3.1. REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 77 ± 9 °F (23 ± 5 °C)
Relative humidity 20 to 75 % RH
Measurement frequency range 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 centered
Shape of the measurement coil circular, no applied stress
Input impedance of the instrument connected
to the electronic unit
≥
1 M
Ω
3.2. ELECTRICAL CHARACTERISTICS
Parameter Value
Range
3 A

30 A

300 A

3000 A
Specified measurement
range
0.5 to 3 A

2 to 30 A

5 to 300 A

50 to 3000 A
Output/input ratio (mV~/A~)
1000

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
)
Maximum offset voltage 0 mV
DC
Phase shift at 50 Hz ≤1° (0.5° typical)
Max. output voltage - 4.5 Vpeak ≤ V ≤ + 4.5 Vpeak
Frequency response*
10 Hz to 10 kHz 10 Hz to 20 kHz
*Above 300 A
RMS
, see the graph in § 3.5.
The peak value is limited only by the electronics of the measurement
unit (red OL indicator on). The coil alone can briefly withstand higher
peak factors with no risk of overheating or damage.