AC Voltage Transducers


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.

Selection Guide

M100-VA11ph. self powered ave. sensing RMS calibrated
M100-VL11ph. aux powered ave. sensing RMS calibrated
M100-VR11ph. aux powered true RMS sensing RMS cal.
M100-VA33ph. self powered ave. sensing RMS calibrated
M100-VL33ph. aux powered ave sensing RMS calibrated

Typical Applications

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.

Technical Specifications

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,VR1)
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 mA0-1 / 5 / 10 / 20mA (VA1, VA3)
Rated value mA1 / 5 / 10 / 20 & 4-20mA (VR1)
Rated value mA4-20mA (VL1, VL3)
Rated value volts0-5 / 10V (VA1,VA3)
Rated value volts0-5 / 10 & 1-5V (VR1)
Rated value volts1-5V (VL1, VL3)
Zero:No adjustment (VA1, VA3)
Zero:± 2% (VR1, VL1)
Span:± 10% (VA1,VA3,VR1,VL1,VL3)
A.C. Voltage115 / 230 / 400V(± 25% / 45-65Hz / < 2VA
D.C. Voltage(24 / 48 / 110V±20% / galvanically isolated / <3W)
M100-VA1Approx 0.3 kg. 55mm case
M100-VL1,VR1Approx 0.4 kg. 55mm case
M100-VA3Approx 0.6 kg 100mm case
M100-VL3Approx 0.7 kg. 100mm case

Ordering Information

Product CodeInput InOutputAuxFreqOptions


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

A.C. Current Connection Diagrams