INDICATOR OF LOADING OF MOTOR Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: indicator relates to devices ensuring optimum loading of motors. Signals from electric contact pickup 3 activates first controlling delay element 7 and in an interval - second delay element 11. If duration of logic "1" of signal is less than r₁ and duration of logic "0" is less than r₂ then indicator of optimum operation will light up in display unit 9, otherwise overload or underload are indicated. Values r₁ and r₂ are set with commutator-mode controller 15 and encoder 16 which generate proper codes into controlled delay elements. Pulse generator 6 is switched on into self-control mode instead of electric contact pickup 3. In this case indicators will light up sequentially with frequency of 1 Hz. EFFECT: expanded functional capabilities by increase of number of time delays and enhanced controllability of indicator. 6 dwg