Read or Download 315-1975 (R1993) IEEE Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters) Bound with 315A-1986 (R1993) Supplement to IEEE Std 315-1986 PDF
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Additional resources for 315-1975 (R1993) IEEE Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters) Bound with 315A-1986 (R1993) Supplement to IEEE Std 315-1986
1 Bus bar (with connections shown) Use only if essential to distinguish bus from other circuit paths. 3A: The “n” is not part of the symbol. A number representing the actual number of paths shall be substituted for “n”. 4 Dielectric path other than air Commonly used for coaxial and waveguide transmission. 5 Crossing of paths or conductors not connected The crossing is not necessarily at a 90-degree angle. 2 Application: junction of paths, conductors, or cables. , may be indicated if desired. 4 Splice (if desired) of same size cables.
2 — Symbols for single-line (one-line) diagrams appear at the left, symbols for complete diagrams at the right, and symbols suitable for both purposes are centered in each column. 1. 38 Copyright © 1975 IEEE All Rights Reserved ELECTRICAL AND ELECTRONICS DIAGRAMS IEEE Std 315-1975 3. 1 Guided path, general A single line represents the entire group of conductors or the transmission path needed to guide the power or signal. For coaxial and waveguide work, the recognition symbol is used at the beginning and end of each kind of transmission path and at intermediate points as needed for clarity.
1B — The two vertical lines indicate input side. 2 3 Writing; recording; head, sound-recorder 3 F The broken line - — - indicates where line connection to a symbol is made and is not part of the symbol. , tachometer generator, microphone, motor, loudspeaker, etc. 1 General, electrical output 4 The broken line - — - indicates where line connection to a symbol is made and is not part of the symbol. 2A: Explanatory words and arrows are not part of the symbols shown. 14 Thermal Element Thermomechanical Transducer Actuating device, self-heating or with external heater.