Co-sponsored by: IEEE Houston

Night 1: Motor control centers serve a crucial role in power distribution for serving a multiplicity of loads in industry. From feeding building distribution loads in a commercial application, to providing control of cooling towers at an industrial facility, MCCs provide a tremendous flexibility to serve a variety of end user applications. Come learn about how this product can be the multi-tool of an electrical designers toolkit.
Night 2: Since their introduction nearly 100 years ago, MV motor starters have progressed from oil immersed contactor designs to vacuum break technology. Further to this, solid state technology is in common use at medium voltage levels for motor control in the form of MV soft starters and drives. While things have changed, the basic principles continue to remain the same. This presentation will begin by comparing low and medium voltage starter designs and the factors involved in the decision as to which direction to take. We will then discuss the use of contactors versus breakers. The presentation will then go into the basics of medium voltage starter design, Nema E2 design requirements, compartmentalization, components such as structure, power bus, fuses, CPTs, etc. This will take us into component details such as the selection of power fuses, current transformers, overloads to achieve proper coordination and protection which everyone should understand. MCC configurations, starter options, incoming and feeder sections and other aspects which go into the overall design will be addressed. Good practices which need to be observed such as the need to replace all 3 fuses in the event of a high current event will be explained. A simplified overview of motor starting analysis will be reviewed since this is often required in order to select a suitable starter and starting means which will meet the need to accelerate the application while remaining in compliance with utility restrictions such as voltage flicker. The presentation will address what information needs to be provided to a supplier when procuring a MV starter as well as other information which will impact installation ranging from storage, transporting equipment, floor mounting, bus links, etc. Finally, we will cover new trends and options – items such as intelligent starters, arc flash and arc flash options.

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Speaker(s): Matt Hussey (Eaton), Rick Paes (Rockwell)

Location:
Jacobs Engineering, Tower Two
5985 Rogerdale Road
Houston, Texas
77072