Electrical Substation Diagram Symbols

Graphic symbols of substation elements.

Electrical substation diagram symbols. Single line symbols electrical symbols used to represent various electrical devices for usages in electrical schematic design. This article shows many of the frequently used electrical symbols for drawing electrical diagrams. Basics 10 480 v pump schematic. Though these standard symbols are simplified the function descriptions can make you understand clearly.

Between the generating station and consumer electric power may flow through several substations at different voltage levels. Electrical symbols electronic circuit symbols of schematic diagram resistor capacitor inductor relay switch wire ground diode led transistor power. The electrical substation can be defined as a network of electrical components comprising of power transformers busbars auxiliaries and switchgear etc. Basics 13 valve limit switch legend.

Substations transform voltage from high to low or the reverse or perform any of several other important functions. Single line diagrams sld a single line diagram shows the disposition of equipment in a substation or network in a simplified manner using internationally accepted symbols to represent various items of equipment such as transformers circuit breakers and disconnectors generally with a single line being used to represent three phase connections. The components are interconnected such that creating a sequence of a circuit capable to be switched off while running on normal operation through manual commands while in emergency situations it can be switched off automatically. Standard electrical iec symbols also known as iec 60617 british standard bs 3939 used to represent various devices including pilot lights relays timers and switches for usage in electrical schematic diagrams.

One line diagrams 4 16 503 control and wiring diagrams 17 28 506 communication systems 29 510 power lay outs 30 38 520 lighting lay outs 30 38 530 earthing lay outs 30 38 550 cathodic protection 30 38 logic symbols 39 40. Basics 8 aov elementary block diagram. Basics 7 4 16 kv 3 line diagram. Basics 14 aov schematic with block included.

Basics 11 mov schematic with block included basics 12 12 208 vac panel diagram. Index symbols page 501 502 key diagrams m. Symbols of the most important equipment in transformer substation are given below. Electrical symbols virtually represent the components of electrical and electronic circuits.

Basics 9 4 16 kv pump schematic. Power transformers circuit breakers isolators instrument transformers cts vts etc by their graphic symbols in the connection schemes.