Patent ID: 6941785

Claim:
A pump diagnostic system comprising: current sensing probes, exclusive of voltage probes, removably disposed on electrical motor leads of a pump for sensing only current signals on incoming motor power, a signal processor having means for buffering and anti-aliasing said current signals into a pump motor current signal, and a computer having a means for analyzing, displaying, and reporting motor current signatures from said motor current signal to determine pump health using integrated motor and pump diagnostic parameters, and wherein said pump health is determined by normalizing at least nine motor and pump diagnostic parameters using predetermined threshold magnitudes for each parameter to calculate an overall motor condition, wherein, said diagnostic parameters include overall shorted turns magnitude, overall static eccentricity magnitude (rotor bar based), overall dynamic eccentricity magnitude (rotor bar based), overall dynamic eccentricity magnitude (motor speed sideband based), overall rotor winding asymmetry magnitude (slip-poles sideband based), demo slip-poles peak, demo 1×ms peak, demo 3×ms peak, and demo 5×ms peak.