THOMAS P MCNAMARA
Engineers in Lake Mary, FL
License number
Pennsylvania PE036253E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Lake Mary, FL 32746
Pennsylvania
Pennsylvania
Professional information
Bushing Assembly For Draw-Out Circuit Breaker
US Patent:
2012018, Jul 19, 2012
Filed:
Sep 14, 2010
Appl. No.:
13/496699
Inventors:
Robert A. Patten - Deltona FL, US
Robert S. Kambach - Lake Mary FL, US
Thomas P. McNamara - Lake Mary FL, US
Robert S. Kambach - Lake Mary FL, US
Thomas P. McNamara - Lake Mary FL, US
Assignee:
ABB Technology AG - Zurich
International Classification:
H02B 1/20, H01F 27/04
US Classification:
361637, 16 21
Abstract:
A rear panel for a draw-out circuit breaker includes a metal plate having a pair of rectangular cutouts. Two bushing blocks are joined together and at least partially extend through the cutouts. Each molded bushing block includes three bushings, each of which carry an electrical conductor that is over-molded therein.
Bus Condition Monitoring System
US Patent:
2012019, Aug 2, 2012
Filed:
Jul 8, 2009
Appl. No.:
13/375995
Inventors:
Thomas P. McNamara - Lake Mary FL, US
Harshavardhan M. Karandikar - Longwood FL, US
Marek Budyn - Krakow, PL
Michael G. Urmson - Bismarck ND, US
Harshavardhan M. Karandikar - Longwood FL, US
Marek Budyn - Krakow, PL
Michael G. Urmson - Bismarck ND, US
Assignee:
ABB Research Ltd - Zurich
International Classification:
G08B 21/18
US Classification:
340584
Abstract:
A method and system is disclosed for monitoring switchgear. The current supplied to the main bus is measured. The current flowing through a plurality of feeder circuits is also measured. The temperature of the main bus at one or more nodes is measured, wherein a node is a connection point between the main bus and each feeder circuit. The current flowing through one of the nodes is determined by subtracting the current flow through each the feeder circuit upstream from the node, from the current supplied by the input circuit. An alarm condition is determined if the temperature at a node exceeds a predetermined temperature value for a given current flow through the node. The alarm condition is thereafter displayed to a switchgear operator.