Patent ID: 6104106
Filing Date: 2000-08-15
Classification: H02H,H03K,Y10S

Abstract:
A method of soft starting a three-phase circuit, comprising the steps of:turning on first and second phases of said three-phase circuit and, only if an undesirable first predetermined power condition is not detected, turning on said third phase;if said first predetermined power condition is detected, turning off said first and second phases and turning on said third and first phases and, only if an undesirable second predetermined power condition is not detected, turning on said second phase;if said second predetermined power condition is detected, turning off said third and first phases and turning on said second and third phases and, only if an undesirable third predetermined power condition is not detected, turning on said first phase; andrepeating said step of turning on said first and second phases, said step of turning on said third and first phases and said step of turning on said second and third phases, until none of said first, second and third power conditions are detected.