Patents Assigned to E.I.L. Instruments, Inc.
  • Circuit recloser test set
    Patent number: 4307345
    Abstract: A test set designed to energize an oil filled circuit recloser with a reasonably constant current to simulate fault conditions for the purpose of verifying the recloser operation as specified by manufacturer's performance curves is disclosed. The test set of this invention is a self-contained unit comprising a selectable tapped auto-transformer, a variable vernier auto-transformer, a selectable power resistance bank, an output transformer, a control package and a monitor package.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: December 22, 1981
    Assignee: E.I.L. Instruments, Inc.
    Inventor: Paul E. Schoen