All about wiring of electric motors

Motor circuit diagrams

Diagrams indicate the voltage-free or current-free status of the electrical installation. A distinction is drawn between:

Block diagram – Simplified representation of a circuit with its main parts. It shows how the electrical installation works and how it is subdivided.

Circuit diagram – Detailed representation of a circuit with its individual components,which shows how the electrical installation works.

Equivalent circuit diagram – Special version of an explanatory circuit diagram for the analysis and calculation of circuit characteristics.

Motor wiring diagrams

Wiring diagrams show the conductive connections between electrical apparatus. They show the internal and/or external connections but, in general, do not give any information on the mode of operation. Instead of wiring diagrams, wiring tables can also be used.

Unit wiring diagram – Representation of all the connections within the device or combination of devices.

Interconnection diagram – Representation of the connections between the device or combination of devices within an installation.

Terminal diagram – Representation of the connection points of an electrical installation and the internal and external conductive connections connected to them.

Location diagram (location diagram) – Representation of the physical position of the electrical apparatus, which does not have to be to scale. You will find notes on the marking of electrical apparatus in the diagram as well as further diagram details in the chapter “Specifications, Formulae, Tables”.