Active Voltage Transducer

DIN rail mounting transducers available in 55mm x 112mm or 100 x 112mm DIN rail cases.

Used to conver various inputs into standard DC signals for driving panel meters and for use in control devices.

M100-VA1 1ph. self powered ave. sensing RMS calibrated
M100-VL1 1ph. aux powered ave. sensing RMS calibrated
M100-VR1 1ph. aux powered true RMS sensing RMS cal.
M100-VA3 3ph. self powered ave. sensing RMS calibrated
M100-VL3 3ph. aux powered ave sensing RMS calibrated
The M100 series voltage transducers are designed to measure AC voltage in single and 3 phase systems. They convert the A.C. signal to a D.C. output that is directly proportional to the input signal. The M100-VA1, VA3 are self powered (ie no auxiliary required) average sensing RMS calibrated voltage transducers, mA and voltage outputs are available.

The M100-VR1 is true RMS sensing RMS calibrated allowing measurement of distorted waveforms of up to 9th harmonic with a crest factor of 5. The VR1 is typically used in voltage measurements where distorted waveforms are common such as in thyristor drives. The above units are used to measure voltage in energy management systems, switchboards, generator and telemetary controls. Isolation of 4kV is provided between the input and output signal, allowing the output to be fed to conventional analogue meters,  digital meters, PLC, and computer systems.

Rated value Un: 57.8 < 100 / 110 < 600V
Power Consumption < 1.5VA (VA1, VA3)<1VA(VL1,VL3,VR1)
Working Range: 15-125% Un(VA1,VA3)0-125%Un(VL1,VL3,
Rated Frequency: 50 / 60 / 400Hz
Frequency influence: 0.005% / Hz
Overload continuous: 1.5 x Un
Overload for 1 sec: 4 x Un (VL1,VL3,VR1) 2 x Un(VA1,VA3)
Rated value mA 0-1 / 5 / 10 / 20mA (VA1, VA3)
Rated value mA 1 / 5 / 10 / 20 & 4-20mA (VR1)
Rated value mA 4-20mA (VL1, VL3)
Rated value volts 0-5 / 10V (VA1,VA3)
Rated value volts 0-5 / 10 & 1-5V (VR1)
Rated value volts 1-5V (VL1, VL3)
Zero: No adjustment (VA1, VA3)
Zero: ± 2% (VR1, VL1)
Span: ± 10% (VA1,VA3,VR1,VL1,VL3)
A.C. Voltage 115 / 230 / 400V(± 25% / 45-65Hz / < 2VA
D.C. Voltage (24 / 48 / 110V±20% / galvanically isolated / <3W)
M100-VA1 Approx 0.3 kg. 55mm case
M100-VL1,VR1 Approx 0.4 kg. 55mm case
M100-VA3 Approx 0.6 kg 100mm case
M100-VL3 Approx 0.7 kg. 100mm case
Product Code Input In Output Aux Freq Options
M100-AL1 5A 4-20mA 230V 50Hz


1 Non standard inputs/outputs as far as technically viable
2 A.C. Auxiliary in range 57.7 to 450 volts
3 Calibration at nominal Hz 35...450Hz
4 Calibration at temperature other than 23ºC