Seymour Salowe

45772797, Mar 18, 1986

May 31, 1983

6/499624

Seymour Salowe - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

H02H 318

364483

An apparatus and method for removing a transient exponential noise signal from a sinusoidal signal. The effects of the transient are removed by sampling the sinusoidal signal, averaging the transient over a time interval corresponding to an integral number of cycles of the sinusoidal signal, and subtracting this average from the sample at the midpoint of the time interval. The result is a compensated sinusoidal signal wherein the effects of the transient have been removed. The time interval is progressively moved ahead to produce a complete compensated signal by subtracting the average of the exponential from the value thereof at the midpoint of each successive time interval.

47220597, Jan 26, 1988

Apr 19, 1985

6/725195

Joseph C. Engel - Monroeville Boro PA
Leonard C. Vercellotti - Oakmont PA
Richard A. Johnson - Murrysville PA
Seymour Salowe - Murrysville PA
William R. Verbanets - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

H02H 308
G06F 1546

364483

Programmed overcurrent protection control apparatus with selectable time-overcurrent operation to govern the interruption of current through at least one power line associated with either a ground phase or a power phase of a power system network is disclosed. A programmed processor is included to derive an overcurrent time-to-trip in accordance with sampled measurement current values of the power line and selected derivation constants stored in a memory look-up table. The derivation constants are selected from the look-up table based on derivation parameters which may be set and read by the programmed processor from time to time. The programmed processor utilizes the selected derivation constants to derive the time-to-trip over a number of predetermined time intervals during which the overcurrent condition persists. An alternate overcurrent time-to-trip relationship utilizing different derivation parameters selected from the look-up table may be utilized for the conditions in which overcurrent exists in an initial predetermined range. In some situations, both of the derivation relationships may be used concurrently to derive the overcurrent time-to-trip.

43718299, Feb 1, 1983

Nov 13, 1981

6/321159

Seymour Salowe - Murrysville PA
Thomas C. Zinchuk - Level Green PA

Westinghouse Electric Corp. - Pittsburgh PA

H02J 318

323209

A capacitor unit including a capacitive element connected in parallel with a discharge resistor is provided with a switch in series with the resistor. This switch responds to power frequency current flowing through the capacitive element such that it opens to remove the discharge resistor from the circuit when power frequency current is flowing through the capacitor unit and closes when power frequency current stops, thus reinserting the discharge resistor to eliminate any residual charge remaining on the capacitive element.

46352589, Jan 6, 1987

Oct 22, 1984

6/663242

Seymour Salowe - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G06F 1100

371 16

A system for detecting a fault in the program execution of a programmed digital signal processing system is disclosed. The fault detection system may include a plurality of monitoring devices for monitoring the execution of a plurality of program portions of the programmed processor and for generating a fault signal in response to a detected faulty program execution condition. Logic circuitry is included for restarting of suspending any fault signal generation rendered by the plurality of monitoring devices. Further included is circuitry for limiting the number of automatic restarts to a predetermined number which avoids continuous cycling between fault signal generation and reset. Still further, the predetermined number of fault generations must occur within a given time interval which may be set and from time to time changed by the program instructions, for example. A fault indication or alarm is not provided until the predetermined number of fault signal generations has occurred within the predetermined time interval.