1.1 This standard ( Part I ) covers the definitions and classification of dia-grams, charts and tables used in electrotechnology in order to explain func-tions or show connections and to give information for manufacture, instal-lation and maintenance.
1.2 Two kinds of classification have been adopted:
a) classification according to purpose, and
b) classification according to method of representation.
Note — In practice, the type of diagram is determined by its purpose, the method(s) of representation being chosen for convenience.
IS 8270 Pt.1-1976 history
1977IS 8270 Pt.1-1976 Guide to the production of charts, graphs and tables for Electrical Technology Part I Definitions and Classifications