BUSWAY SIEMENS PDF

These methods may include heavy conductors run in trays or conduit. Once installed, cable and conduit assemblies are difficult to change. Power may also be distributed using bus bars in an enclosure. This is referred to as busway.

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This course covers Busway and related products. In addition, you will be better able to describe products to customers and determine important differences between products. You should complete Basics of Electricity before attempting Busway. An understanding of many of the concepts covered in Basics of Electricity is required for Busway. We will mail you a certificate of completion if you score a passing grade. Good luck with your efforts. This reprinted material is not the complete and official position of the National Fire Protection Association on the referenced subject which is represented by the standard in its entirety.

Underwriters Laboratories, Inc. National Electrical Manufacturers Association is located at L. Street, N. Other trademarks are the property of their respective owners. Distribution systems are used in every residential, commercial, and industrial building.

Distribution systems used in commercial and industrial locations are complex. A distribution system consists of metering devices to measure power consumption, main and branch disconnects, protective devices, switching devices to start and stop power flow, conductors, and transformers.

Power may be distributed through various switchboards, transformers, and panelboards. Careful engineering is required so that the distribution system safely and efficiently supplies adequate electric service to both present and possible future loads. The utility company supplies power from a transformer. A feeder is a set of conductors that originate at a main distribution center and supplies one or more secondary, or one or more branch circuit distribution centers.

Three feeders are used in this example. The first feeder is used for various types of power equipment. The second feeder supplies a group of VAC motors. The third feeder is used for volt lighting and receptacles. These methods may include heavy conductors run in trays or conduit.

Once installed, cable and conduit assemblies are difficult to change. Power may also be distributed using bus bars in an enclosure.

This is referred to as busway. Bus Bars A bus bar is a conductor that serves as a common connection for two or more circuits.

It is represented schematically by a straight line with a number of connections made to it. Standard bus bars in Siemens busway are made of aluminum or copper. Busway Used in a Distribution System A major advantage of busway is the ease in which busway sections are connected together. Electrical power can be supplied to any area of a building by connecting standard lengths of busway. It typically takes fewer man-hours to install or change a busway system than cable and conduit assemblies.

In this example power from the utility company is metered and enters the plant through a distribution switchboard. The switchboard serves as the main disconnecting means. The middle feeder feeds another switchboard, which divides the power into three, three-phase, three-wire circuits. Each circuit feeds a busway run to volt motors.

Branch circuits from the lighting and receptacle panelboards supply power for lighting and outlets throughout the plant. Busway used in industrial locations can supply power to heavy equipment, lighting, and air conditioning. Busway risers vertical busway can be installed economically in a high-rise building where it can be used to distribute lighting and air conditioning loads.

Sentron busway will meet the needs of most busway systems with current ratings from amperes to amperes. Siemens manufactures several types of busway. There are a number of reasons why different types of busway are manufactured. An existing pre-Sentron busway system, for example, may need to be expanded. Other types of Siemens busway, including significant features, and ratings will be discussed later in the course.

Feeder busway is used to distribute power to loads that are concentrated in one physical area. Industrial applications frequently involve long runs from the power source to a single load. This load may be a large machine, motor control center, panelboard, or switchboard.

Service Entrance The service entrance is the point of entrance of supply conductors to a building or other structure. Feeder busway, which can be purchased for indoor or outdoor use, can be used as service entrance conductors to bring power from a utility transformer to a main disconnect inside the building.

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