Reactive Power Transducers

Reactive Power Transducers


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


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

Selection Guide

M100-XA1Single Phase
M100-XA23 phase 3 wire balanced load
M100-XA33 phase 4 wire balanced load
M100-XA43 phase 3 wire unbalanced load
M100-XA53 phase 4 wire unbalanced load
M100-XA63 phase 3 wire balanced load externally connected
reverse C.T’s
M100-XA73 phase 3 wire balanced load internally reversed C.T’s

Typical Applications

The M100-XA series measure reactive power in single, 3 phase 3 or 4 wire balanced and unbalanced systems. Using the time division multiplier circuit means that they can be used over a wide range of input waveforms. The D.C. output signal is directly proportional to the  instantaneous reactive power being measured.

Typical Applications include the measurement of reactive power in switchboards, power stations and generating sets etc. The high isolation of 4kV as with all M100 series allows these transducers to be connected to a variety of measuring and control devices and systems, such as  analogue meters, PLC, computer systems, data loggers, digital instruments and telemetry systems.

Both auxiliary powered and self powered versions of each  type are available. It is recommended to use an auxiliary powered version if the system being measured has voltage variations in excess of ±20%

Technical Specifications

Rated value In:1 or 5 Amp C.T connected 0.5-10A direct connected
Rated value Un:57.8 < 600 Volt
Power Consumption< 1VA voltage < 0.2VA current
Working Range0-125%Un auxiliary powered 75%-125% Un self
powered 0-150% In
Rated Frequency50 / 60 / 400Hz
Frequency Influence0.005% / Hz
Overload continuous4 x In 1.5 x Un
Overload for 1 sec.50 x In 2 x Un
Rated value mA0-1/5/10/20&4-20mA
Rated value volts0-5/10&1-5V
A.C. Voltage115 / 230 / 400V(±25%/45-65Hz/<2VA)
D.C. Voltage24/48/110V(±20%/galvanically isolated/<3W)
M100-XA1,2,3,6,7Approx 0.6kg. 100mm case
M100-XA4,5Approx 0.8kg. 100mm case

Ordering Information

Product CodeIP InUnO/PRangeAuxFreqOpt


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