A single line diagram, also known as a one-line diagram, is a single document that
represents a facilities electrical distribution network. It will have one single line representation for
all three phases. The line can represent both cable and bus in same way.
The Single line Diagram uses different standard symbols for different
electrical items like transformer, ACB, VCB, MCCB, MCB, MPCB, Contactors, CT,
PT, Push button station. The Symbols used as per the IEC Standards and other
local standard agency of respective countries. Most of symbols in different standard
systems are same. Some Representation is given below
The above sheet also known as single line diagram, one line diagram, SLD.
