Patents Assigned to Arteche, Instrumentacion y Systemas Electronicos, S.A.
  • Delayed action electrical protection device, depending on an adjusted magnitude
    Patent number: 4275445
    Abstract: The invention relates to an electrical protection device. According to the invention an adjusted signal is monitored to detect the presence of unwanted disturbances. A microprocessor is used to calculate a delay time for tripping in accordance with the comparison of this signal to calculated values within the microprocessor.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: June 23, 1981
    Assignee: Arteche, Instrumentacion y Systemas Electronicos, S.A.
    Inventor: Rodolfo Di Pietro Elizaran