These Pages include various standards. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. It is also possible to become a BSI member and obtain copies of the Standards at much reduced prices.


Drawing Page


Power Symbols used on electrical diagrams


Introduction

The symbols shown below are generally based on BS 7845:1996 , BS 3939 and BS EN 60617
The diagrams are produced using symbols .. The number of symbols are very large and BS EN 60617 includes many fields from power generation to solid state electronics.   The symbols below are just a selection related to the fields related to general engineering provided as a general guide/  For details showing proportions and sizes reference to the standards is necessary


Building Block Symbols


Symbols for Motors /Generators


Symbols for Transformers etc.


Basic Symbols for Power converters


Links Providing information on Drawing Diagrams and Symbols
  1. Red-Bag-Electrical Design Standard Symbols ... Download containing a large comprehensive set of symbols
  2. Units and Symbols for Electrical and Electronic Engineers - IET ... A very good quality resource. Lots of info.



Drawing Page

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Roy Beardmore passed away on 9th March 2013. He is sadly missed. This website, Roymech, has been an invaluable resource for engineers around the world and we hope to maintain this incredible legacy going forward.

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