System, wellness circuit and method of determining wellness of a rotating electrical apparatus

A wellness circuit for a rotating electrical apparatus operatively associated with an electrical switching, control, protection or monitoring apparatus being structured to provide a number of currents and a number of voltages of the rotating electrical apparatus, said rotating electrical apparatus having a rated current, said wellness circuit comprising:

• a current sensor scaled to the rated current and structured to provide a notch current signal representative of one of the number of currents;
• an interface to the electrical switching, control, protection or monitoring apparatus, said interface providing the number of currents and the number of voltages;
• and
• a processor employing the number of currents and the number of voltages from the interface and the notch current signal to determine wellness of the rotating electrical apparatus,
• wherein said wellness circuit is structured to be separate from or added to the electrical switching, control, protection or monitoring apparatus.

A wellness system comprising:

• a rotating electrical apparatus having a rated current;
• an electrical switching, control, protection or monitoring apparatus operatively associated with the rotating electrical apparatus and being structured to provide a number of currents and a number of voltages thereof;
• and
• a wellness circuit for the rotating electrical apparatus, said wellness circuit being separate from or added to the electrical switching, control, protection or monitoring apparatus, said wellness circuit comprising:
• a current sensor scaled to the rated current and structured to provide a notch current signal representative of one of the number of currents,
• an interface to the electrical switching, control, protection or monitoring apparatus, said interface providing the number of currents and the number of voltages, and
• a processor employing the number of currents and the number of voltages from the interface and the notch current signal to determine wellness of the rotating electrical apparatus.

A method of determining wellness of a rotating electrical apparatus having a rated current, said method comprising:

• operatively associating an electrical switching, control, protection or monitoring apparatus with the rotating electrical apparatus;
• providing a number of currents and a number of voltages of the rotating electrical apparatus with the electrical switching, control, protection or monitoring apparatus;
• providing a wellness circuit for the rotating electrical apparatus;
• providing said wellness circuit separate from or added to the electrical switching, control, protection or monitoring apparatus;
• providing a notch current signal representative of one of the number of currents with a current sensor scaled to the rated current;
• interfacing the electrical switching, control, protection or monitoring apparatus to the wellness circuit to provide the number of currents and the number of voltages thereto;
• and
• processing the number of currents and the number of voltages and the notch current signal to determine wellness of the rotating electrical apparatus.