overspeed trip devices for use on turbines and turbomachinery, consisting of speed sensing circuits interfaced to three individual magnetic pick-ups that send signals through voter relay logic which will cause a turbine trip if two or three speed sensing circuits sense overspeed conditions

'caus':32 'circuit':14,42 'condit':45 'consist':10 'devic':3 'individu':18 'interfac':15 'logic':29 'magnet':19 'overspe':1,44 'pick':21 'pick-up':20 'relay':28 'send':24 'sens':13,41,43 'signal':25 'speed':12,40 'three':17,39 'trip':2,35 'turbin':7,34 'turbomachineri':9 'two':37 'up':22 'use':5 'voter':27

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