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Houston, TX, United States

Degrate S.,Powell Electrical Systems Inc. | Payne J.,Valero | Belak R.,Powell Canada Inc.
Record of Conference Papers - Annual Petroleum and Chemical Industry Conference

A rigorous thermal monitoring regimen is considered standard practice by those responsible for maintaining critical electrical infrastructure. As thermal imaging technologies mature and infrared cameras become increasingly common, it becomes necessary to understand any limitations that may be imposed by methods that capture data infrequently. This paper will frame the benefits of implementing continuous, real time, thermal monitoring instead of performing infrequent scanning with hand-held infrared cameras, in an industrial process environment. Attention is focused on medium and low voltage switchgear due to the importance of their thermal behavior in these industrial settings. Specifically, continuous thermal sensing utilizing fiber-optic based sensors will be reviewed, along with installation considerations and methods for analyzing data. © 2013 IEEE. Source

Kay J.A.,Rockwell Automation | Sullivan P.B.,DuPont Company | Wactor M.,Powell Electrical Systems Inc.
IEEE Industry Applications Magazine

The arc-resistant medium-voltage (MV) motor-control equipment along with installation details and site-application considerations are discussed. The IEEE guide describes the accessibility types with primary levels of protection including equipment with arc-resistant designs or features at the freely accessible front of the equipment. The EEMAC G14-1 standard describes equipment with arc-resistant designs or features at the front, back and sides and between compartments within the same or adjacent cells. Consideration has to be made regarding the physical location of the equipment in relationship to the electrical-room configuration and location of adjacent equipment. The equipments designed to mitigate the internal arcing faults provides a mechanical barrier between the operator and the fault by exhausting the arc-fault products from the equipment to a location that is controlled and safe. Several suppliers provide a plenum system on the top of their arc-resistant enclosures allowing the ceiling height directly over the switch gear which can be reduced slightly. Source

Hodgson D.L.,Royal Dutch Shell | McKinney M.A.,Royal Dutch Shell | Degrate S.D.,Powell Electrical Systems Inc.
IEEE Industry Applications Magazine

The risk of arc flashes in power distribution equipment has long been recognized as a serious hazard in the petroleum and chemical industry. This article explores the methods one company used to systematically reduce the risk of personnel injury due to arc flashes on its existing facilities and on a new project. The process includes incorporating procedures and technologies that allow for minimizing the need to work on or near energized equipment, moving essential work tasks to safe distances, and eliminating or reducing the arc-flash potential. © 1975-2012 IEEE. Source

Powell Electrical Systems Inc. | Date: 2006-07-26

Electric machine controls, supervisory control equipment, namely, voltage transfer switches, electric switchgear, circuit breakers, ground fault detectors for use in electric power distribution.

Powell Electrical Systems Inc. | Date: 2012-03-27

Vacuum circuit breakers for incorporation within medium voltage switchgear.

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