Power Quality Analyzer Model 3945
21
Factors affecting accuracy
(% of the output signal)
Conditions
Range
Error
Temperature
-4 to 140°F (-20 to 60°C)
0.2% per 10°C
Relative humidity
10 to 90% RH
0.5%
Frequency response
10Hz to 20kHz
0.5%
Position of conductor
in clamp
Any position on internal
perimeter of the undeformed
sensor
2%
(4% near latching system)
Adjacent conductor
carrying an AC current
Conductor in contact with
the sensor
1%
(2% near latching system)
3.9 AC Current Probe MR Probe
(with Model 3945)
Nominal Range:
1000A
AC
, 1400A
DC
Measurement Range:
10A to 1000A
AC,
10A to 1300A
PEAK AC+DC
NOTE:
Currents below XA
DC
and YA
DC
will be displayed as zero on the Power-
Pad™ with this probe
Probe Output Signal:
1mV/A
Maximum Cable Diameter:
One 1.6” (42mm) or two 0.98” (25.4mm) or
two bus bars 1.96 x 0.19” (50 x 5mm)
Safety:
EN 61010-2, 600V, CAT III, POLL 2
EN 61010-2, 300V, CAT IV, POLL 2
Reference Conditions:
Ambient temperature
64 to 82°F (18 to 28°C)
Humidity
20 to 75% of RH
Battery voltage
9V ± 0.1V
Position of conductor in the sensor
Centered
Magnetic fi eld
DC magnetic fi eld
AC External magnetic fi eld
None
External electric fi eld
None
Frequency
≤
65Hz
Type of signal measured
Sinusoidal
Accuracy
NOTE:
Add PowerPad™ accuracy ±0.5% ± 1ct
Primary current
10 to 100A
100 to 800A
800 to 1000A
AC
800 to 1300A
PEAK
Accuracy
≤
1.5% + 1mV
≤
3%
≤
4%
Primary current
10 to 200Α
200 to 1000A
–
Phase angle
≤
2°
≤
2°
–
