leidingschemas

Leidingschema, in plural leidingschemas, is a schematic diagram used in electrical engineering and electronics to represent the electrical connections in a system. It shows how components such as switches, relays, sensors, actuators, fuses, and power sources are interconnected by conductors. The diagram focuses on function and logical connections rather than physical layout, so it is typically not drawn to scale.

Purpose and use

Leidingschemas are used during design, construction, testing, maintenance, and troubleshooting. They help engineers and technicians understand how a circuit or installation should operate, verify correct connections, and locate faults. They are widely used in building electrical installations, industrial machinery, automotive wiring, and consumer electronics. In electrical documentation, leidingschemas are often complemented by lists of components, terminal assignments, and installation notes.

Content and conventions

A leidingschema employs standardized symbols for components and wires, with references and designators to identify devices. Wires are labeled and may carry information about voltage, current, color codes, or terminal numbers. Legends or notes explain symbols and conventions. International and national standards guide symbol sets and documentation practices, such as IEC 60617 for symbols and related standards; in the Netherlands, national standards (NEN) are commonly used alongside international norms.

Forms and related diagrams

Two common forms are function schematics, which emphasize logical interconnections and control logic, and wiring diagrams, which map actual conductor routes and terminal points. Related documentation may include single-line diagrams for power distribution and bill of materials. Reading a leidingschema involves tracing circuits from the power source through components, using the legend for symbol meanings and terminals to diagnose or verify connections.