Power Quality Analyzer Model 3945-B
21
3.6 AC Current Probe Model SR193
(3945-B accuracy included)
When installing probes, face the arrow on the probe in the direction of
the load.
Nominal Range:
1000A
AC
for f
≤
1kHz
Measurement Range:
3A to 1200A
AC
max (I >1000A not continuously)
Currents <0.5A will be displayed as zero with this probe.
Probe Output Signal:
1mV
AC
/A
AC
Maximum Clamping Diameter:
2" (52mm)
Safety:
EN 61010-2-032, Pollution Degree 2
, 300V CAT IV, 600V CAT III
Reference Conditions:
Ambient temperature
73°F (23°C) ± 5°F (3°C)
Humidity
20 to 75% of RH
Frequency
48 to 65Hz
Distortion factor
<1% no DC current
Magnetic field of external origin
<40 A/m (earth’s magnetic field)
Accuracy*
Primary current (A
AC
)
3 to 10A
10 to 100A
100 to 1200A
Accuracy (% of the output signal)
≤
0.8% ± 1ct
≤
0.3% ± 1ct
≤
0.2% ± 1ct
Phase shift (°)
≤
1°
≤
0.5°
≤
0.3°
* Logarithmic interpolation between each specified value
Factors affecting accuracy
(% of the output signal)
Conditions
Range
Error
Temperature
14° to 122°F (-10° to 50°C)
≤
200 ppm/°C or 0.2%
per 10°C
Relative humidity
10 to 90%
<0.1%
Frequency
30 to 48Hz
65 to 1000Hz
1 to 5kHz
<0.5%
<1%
<2%
Position of the cable in the jaws
–
<0.1% @
≤
400Hz
Adjacent conductor carrying a
60Hz AC current
Conductor in contact
with the sensor
≤
0.5mA/A
Crest factor distortion
≤
6 and current
≤
3000A peak
<1%
DC current distortion
≤
15A
DC
on the
nominal AC current
<1%
Overload:
Frequency derating beyond 1kHz:
1000A x 1
F
(in kHz)