Selection Guide
M100AA1 1 ph. self powered average sensing RMS calibrated.
M100AL1 1 ph. aux. powered average sensing RMS calibrated.
M100AR1 1 ph. aux powered true RMS sensing RMS calibrated.
M100AA3 3 ph. self powered average sensing RMS calibrated.
M100AL3 3 ph. aux powered average sensing RMS calibrated.
Typical Applications
The M100 series current transducers are designed to measure A.C. current in
single and three phase systems. They convert the A.C. signal to a D.C. output that
is directly proportional to the input signal.
The M100AA1 and M100AA3 are self powered (no auxiliary required), average
sensing, RMS calibrated current transducers with either a milliamp or voltage
output.
The M100AL1 and M100AL3 are average sensing, RMS calibrated, live zero current
transducers. Auxiliary is required to provide power to enable a 4mA output
signal when the input poes to zero.
The M100AR1 is a true RMS sensing, RMS calibrated transducer allowing the
measurement of distorted waveforms of up to 9th harmonic with a crest factor of
5. The M100AR1 is typically used in current measurement where a distorted
waveform is common such as thyristor drives.
The above units are used to measure current in energy management systems,
switchboards, generator and telemetery controls.
Isolation of 4kV is provided between the input and output, allowing the output
to be fed to conventional analogue meters, digital meters, PLC, and computer
systems.
Ordering Information
Product Code Input In Output Aux Freq. Options M100AL1 5A 420mA 230V 50Hz
Options
1. Non standard inputs / outputs only as far as technically acceptable.
2. A.C. Auxiliary in range 57.7 to 450 volts
3. Calibration at nominal Hz 35.....450Hz
4. Calibration at temperature other than 23°

Technical Specification
Input
Rated value In 1 or 5 Amp C.T. connected
0.510 Amp direct connected
Power consumption <1 VA (AA1, AA3)
<0.2 VA (AL1, AL3, AR1)
Working range 10125% In (AA1, AA3)
0125% In (AL1, AL3, AR1)
Rated Frequency 50 / 60 / 400 Hz
Frequency influence 0.005 % / Hz
Overload continuous 4 x In
Overload for 1 sec. 50 x In
Output
Rated value mA 01/5/10/20mA (AA1, AA3)
Rated value mA 01/5/10/20 & 420mA (AR1)
Rated value mA 420mA (AL1 AL3)
Rated value volts 05 / 10 V (AA1, AA3)
Rated value volts 05 / 10 & 15 V (AR1)
Rated value volts 15 V (AL1, AL3)
Adjustments
Zero No adjustment (AA1, AA3)
Zero ± 2% (AR1, AL1, AL3)
Span ± 10% (AA1, AR1, AL1, AA3, AL3)
Auxiliary
A.C. Voltage 115/230/400V (± 25%/4565Hz/<2VA)
D.C. Voltage 24/48/110V (± 20%/galvanically isolated/<3 W)
Note M100AA1 AA3 are self powered
Weight and Case
M100AA1 Approx. 0.3 kg. 55mm case
M100AL1,AR1 Approx. 0.4 kg. 55mm case
M100AA3 Approx. 0.6 kg. 100mm case
M100AL3 Approx. 0.7 kg. 100mm case
