Application Notes

EAP-032128

How to measure both power selling and power buying.

Our factory has a private electric generator and we do power selling as well as power buying. From a viewpoint of power management, we’d like to measure each item of Line current (A), Line voltage (V), Watt (W), Var (var) and Power factor (PF).

As for W, var and PF, we are looking for the transducer, which enables to distinguish power buying from power selling with 4-20mA output proportionally. Does M-System have any suitable power transducer?

M-System has a solution with the multi power transducer, model LSMT2. The LSMT2 has an analog output which is proportional to bidirectional current for Watt, Var and Power factor. It provides 4-12mA DC as selling power and 12-20mADC as buying power. The LSMT2 is multi type power transducer, so 10 analog outputs and 1 Wh pulse output or Modbus output are available. Measurable 10 analog outputs are Line current x 3, Line voltage x 3, Watt, Var, Power factor and Frequency.