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The basic language of control is the circuit diagram. Consist-ing of a series of symbols interconnected by lines to indicate the flow of current to the various components, it tells in remarkably short time a series of events that would take many words to explain. Circuit diagrams are available in two formats.
diagrams are helpful in wiring-up systems, because connections can be made exactly as they are shown on the diagram. In following the electrical sequence of any circuit, however, the wiring diagram does not show the connections in a manner that can be easily followed.
This NHP Motor Control Handbook 2018 provides technical information of a general nature about low voltage switchgear, protective devices and their combination.
One-line diagram – a diagram that uses single lines and graphic symbols to indicate the path and components of an electrical circuit. One-line diagrams are used when information about a circuit is required but detail of the actual wire connections and operation of the circuit are not.
Multiple steps for starting resistors. On-off control thermal overload protection. Note: starting resistors are shorted out not switched as previously shown. Start-stop provided by push button control. Heavy Line indicate power wiring. Light weight lines indicate control circuits .
The document describes various motor control starters including full voltage, reduced voltage, magnetic, and solid state starters. It also discusses different control variations and applications for pumps, sequencing, jogging, etc. What are some of the different types of motor control starters described in the document?
The key takeaways from the document are that it discusses electric motor control diagrams, contactors, relays, control circuits, power circuits, and how to start and stop electric motors. What are contactors and what are their main parts? What is the difference between a control circuit and a power circuit?
