I've developed a small device that trips a circuit if its power consumption goes outside a bound.
There are quite a few machines (for example - pumps) whose power consumption depends on the input voltage.
Such machines may get damaged in case the external conditions go berzerk. (example when there is no input to a submersible pump). In such cases the power input fluctuates. (The current input fluctuates, but unpredictably in many cases)
My device is initially programmed with 2 graphs:
1: of Maximum Power versus Input-Voltages of the machine it intends to protect. 2: of Minimum Power versus Input-Voltages of the machine it intends to protect.The device interpolates and makes this graph smooth.
When the power consumption of the machine goes out of bounds for a given input voltage, it trips the machine.
First, does such device exist in the market ? If yes, what is it called ? What are the other uses one could contemplate for this device? (It was originally made for pumps)
Thank you Mike