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.

M100-XA1 Single Phase
M100-XA2 3 phase 3 wire balanced load
M100-XA3 3 phase 4 wire balanced load
M100-XA4 3 phase 3 wire unbalanced load
M100-XA5 3 phase 4 wire unbalanced load
M100-XA6 3 phase 3 wire balanced load externally
connected reverse C.T's
M100-XA7 3 phase 3 wire balanced load internally reversed C.T's

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%.

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 Range 0-125%Un auxiliary powered 75%-125% Un self
powered 0-150% In
Rated Frequency 50 / 60 / 400Hz
Frequency Influence 0.005% / Hz
Overload continuous 4 x In 1.5 x Un
Overload for 1 sec. 50 x In 2 x Un
Rated value mA 0-1/5/10/20&4-20mA
Rated value volts 0-5/10&1-5V
Zero ±2%
Span ±10%
A.C. Voltage 115 / 230 / 400V(±25%/45-65Hz/<2VA)
D.C. Voltage 24/48/110V(±20%/galvanically isolated/<3W)
M100-XA1,2,3,6,7 Approx 0.6kg. 100mm case
M100-XA4,5 Approx 0.8kg. 100mm case
Product Code IP In Un O/P Range Aux Freq Opt
M100-XA4 400/5A 400 0-20mA 300kW 120v 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