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104
Power Quality Analyzer PowerPad
®
IV Model 8345
17.2.5 Specifications of the Current Sensors
You must add the measurement error on the RMS current and phase error to any
instrument error for measurements that use the current measurements: powers,
energies, power factors, tangents, etc.
Sensor Type
At 50/60 Hz
RMS Current (A
RMS
)
Maximum Error
Maximum
Error on φ
AmpFlex
®
193
[1000 A ... 12,000 A]
±(1.2 % + 1 A)
±0.5 °
[100 A ... 1000 A]
±(1.2 % + 0.5 A)
[5 A ... 100 A]
±(1.2 % + 0.2 A)
[0.1 A ... 5 A]
±(1.2 % + 0.2 A)
-
MiniFlex
®
MA194-24-BK
[1000 A ... 12,000 A]
±(1 % + 1 A)
±0.5 °
[100 A ... 1000 A]
±(1 % + 0.5 A)
[5 A ... 100 A]
±(1 % + 0.2 A)
[0.1 A ... 5A]
±(1 % + 0.2 A)
-
SR193 clamp
(1000 A)
[1 A ... 50 A]
± 1 %
-
[50 A ... 100 A]
± 0.5 %
±1 °
[100 A ... 1200 A]
± 0.3 %
±0.7 °
MR193 clamp
(1000 A)
[0.5 A ... 100 A]
±(1.5 % + 1 A)
±2.5 °
[100 A ... 800 A]
± 2.5 %
±2 °
[800 A ... 1000 A]
± 4 %
±2 °
MN93 clamp
(200 A)
[0.5 A ... 5 A]
±(3 % + 1 A)
-
[5 A ... 40 A]
±(2.5 % + 1 A)
±5 °
[40 A ... 100 A]
±(2 % + 1 A)
±3 °
[100 A ... 240 A]
±(1 % + 1 A)
±2.5 °
MN193 clamp
(100 A)
[0.2 A ... 5 A]
±(1 % + 2 mA)
±4 °
[5 A ... 120 A]
± 1 %
±2.5 °
MN193 clamp
(5 A)
[0.005 A ... 0.25 A]
±(1.5 % + 0.1 mA)
-
[0.25 A ... 6 A]
± 1 %
±5 °
SL261 clamp (BNC)
(100 A)
[0.5 A ... 40 A]
±(4 % + 50 mA)
±1 °
[40 A ... 70 A]
±15 %
±1 °
SL261 clamp (BNC)
(10 A)
[0.1 A ... 7 A]
±(3 % + 50 mA)
±1.5 °
This table does not account for any possible distortion of the measured signal
(THD) due to the current sensor’s physical limitations (saturation of the magnetic
circuit or the Hall effect sensor).
Limitations of the AmpFlex
®
and MiniFlex
®
Like all Rogowski sensors, the AmpFlex
®
and MiniFlex
®
have output voltage that
is proportional to the frequency. A high current at high frequency can saturate the
instrument’s current input.