Richard E Tyner

US Patent:

6377051, Apr 23, 2002

Filed:

Dec 3, 1999

Appl. No.:

09/454907

Inventors:

Richard E. Tyner - Florence SC
Gregory J. Grote - Jefferson City MO

Assignee:

ABB Power TD Company Inc. - Raleigh NC

International Classification:

G01R 31327

US Classification:

324418, 324415

Abstract:

A relay test set of reduced size and weight includes a small, highly efficient voltage and current source. The test set incorporates a Class D switching amplifier design that greatly reduces the size of the power source needed to inject the correct voltage and current into the secondary inputs of a protective relay. To further reduce the size, weight and cost of the relay test set, a single voltage amplifier is used to drive both voltage and current secondary inputs of a protective relay. In so doing, this test set then becomes both a voltage transformer and current transformer simulator utilizing a single voltage power source at reduced size, weight and cost. To make the power source variable while maintaining accuracy, a microcomputer module is used to monitor both current and voltage being injected into the protective relay. This microcomputer may also automatically run the required relay tests and route the voltage or current to the appropriate inputs of the protective relay by direct control of a relay matrix.

US Patent:

6689968, Feb 10, 2004

Filed:

Jan 17, 2002

Appl. No.:

10/051885

Inventors:

Marty L. Trivette - Cary NC
Richard E. Tyner - Florence SC
Murray K. Jones - Johnsonville SC

Assignee:

ABB Technology AG - Zurich

International Classification:

H01H 920

US Classification:

200 5021, 200 5026, 218155

Abstract:

A presently-preferred capacitor discharge system for a circuit breaker adapted for use in a switchgear enclosure comprises a capacitor discharge circuit adapted to be electrically coupled to the capacitor, and a contact switch electrically coupled to the capacitor discharge circuit and adapted to be mechanically coupled to a support truck of the circuit breaker. The contact switch is movable between a first and a second position. The system also comprises a resistor electrically coupled to the capacitor discharge circuit, and a lever arm adapted to be rigidly coupled to a racking mechanism of the circuit breaker and adapted to urge the contact switch into the closed position when a locking arm of the racking mechanism disengages from the switchgear enclosure. The capacitor discharge system is adapted to electrically couple the capacitor and the resistor when the contact switch is in the second position thereby discharging the capacitor.

US Patent:

D652389, Jan 17, 2012

Filed:

Aug 16, 2010

Appl. No.:

29/367933

Inventors:

Phillip R. Thompson - Alcolu SC, US
Richard E. Tyner - Florence SC, US

Assignee:

ABB Inc. - Cary NC

International Classification:

1303

US Classification:

D13158, D13166

US Patent:

59531924, Sep 14, 1999

Filed:

Feb 28, 1997

Appl. No.:

8/808318

Inventors:

Richard E. Tyner - Florence SC

Assignee:

ABB Power T&D Company Inc. - Raleigh NC

International Classification:

H02H 100

US Classification:

361114

Abstract:

A solid state control system for controlling activation signals to circuit breaker electro-mechanical close coils is disclosed. The system employs a novel arrangement of a silicon controlled rectifier (SCR) and other electronic components, such as a FET, to provide "anti-pump. " The system locks out continuous close signals until after the close signal has been removed and then reapplied.

US Patent:

61811130, Jan 30, 2001

Filed:

Jul 29, 1999

Appl. No.:

9/363426

Inventors:

Yi Hu - Cary NC
Le Tang - Cary NC
Harry G. Mathews - Cary NC
Richard E. Tyner - Florence SC

Assignee:

ABB Power T&D Company Inc. - Raleigh NC

International Classification:

G05F 300

US Classification:

323209

Abstract:

A method and system for preventing sustained resonance conditions in a power system involves measuring voltage and current samples on a conductor to which a plurality of controlled capacitors are operatively coupled. The measured voltage and/or current is utilized to identify a resonance condition. The method or system determines whether the resonance condition is due to switching of a controlled capacitor and, if so a corrective switching operation is performed after a first time delay. If the resonance condition is determined not to be due to the switching of a capacitor, then a second switching operation, in which a second controlled capacitor is switched after a second time delay, is performed. The second time delay is preferably greater than the first time delay.