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General engineering graphical symbol series - Engineering Drawing
General engineering graphical symbol series
BS 1553: Specification for graphical symbols for general engineering.
Part 1 Piping systems and plant. This section deals with graphical symbols for use in the creation of flow and piping plant and heating and ventilation installations. Part 2 Graphical symbols for power generating plant. Includes steam and internal combustion engines and turbines, also auxiliary plant. Part 3 Graphical symbols for compressing plant.
Includes applications to air operated switchgear.
Fluid Power Systems and Components BS 2917-1 Specification for Graphical Symbols
60617-
General information and general index
Symbol elements, qualifying symbols and other symbols having general application Conductors and connecting devices Basic passive components Semiconductor and electron tubes Production and conversion of electrical energy
Switchgear, control gear and protective devices Measuring instruments, lamps and signalling devices Telecommunications, switching and peripheral equipment Telecommunications and transmission
Architectural and topographical installation plans and diagrams Binary logic elements Analogue elements.
Engineering diagram drawing practice is covered by BS 5070 and is available in three parts. Part 1. Recommendations for general principles. Sets out drawing practice common to all fields on engineering diagrams. Covers layout, types of diagrams, drawing sheets, lines, lettering and graphical symbols. BS 5070-3. Recommendations for mechanical/fluid flow diagrams.
Gives principles and presentation for mechanical, hydraulic, pneumatic topographic, block, circuit, piping, interconnection and supplementary diagrams. To be read in conjunction with BS 5070: Part 1. BS 5070-4. Recommendations for logic diagrams. Principles and presentation. Covers signal names, characteristics and logic circuit diagrams. To be read in conjunction with Parts 1 of BS 5070 and BS EN 61082-2.
BS EN 61082-2. Rules for function-oriented diagrams, function diagrams and circuit diagrams.
The diagrams which follow are representative of various branches of engineering and obviously every application will be different. The examples can only indicate the type of diagram one is likely to encounter. The standards listed will provide a valuable source of information relating to layout content and the appropriate symbols to be used.
Direct current Alternating current Positive polarity Negative polarity
Propagation, energy flow, signal flow, one way
Terminal strip, example shown with terminal markings
Double junction of conductors
Crossing of conductors with no electrical connection
Note - The longer line represents the positive pole, the short line the negative pole. The short line may be thickened for emphasis ryyy^ Inductor, coil, winding, choke Inductor with magnetic core prrq
La-A-AJ
Inductor with tappings, two shown
Transformer with magnetic core
Machine, general symbol The asterisk is replaced by a letter designation as follows: C synchronous converter G generator GS synchronous generator M motor
MG machine capable of use as a generator or motor MS synchronous motor
Socket (female), pole of a socket
Plug (male), pole of plug
Plug and jack, _q telephone type, two-pole Note - The longest pole on the plug represents the tip of the plug, and the shortest the sleeve
Battery of accumulators or primary cells
Fuse, general symbol Form 1
Conductor, group of conductors, line, cable, circuit, transmission path (for example, for microwaves)
Fuse with the supply side indicated
Connecting link, closed Connecting link, open
Conductors in a cable, three conductors shown
Earth or ground, general symbol
A Ammeter Oscilloscope
Polarized capacitor, for example, electrolytic
Make contact normally open, also general symbol for a switch
Change-over contact, break before make
Contactor, normally open Contactor, normally closed
Operating device (relay coil), general symbol
Coil of an alternating current relay
Transducer head, general symbol
* Laser (optical maser, ^ general symbol)
_0|_ Semiconductor diode, general symbol
Light emitting diode, general symbol
Table 27.1 (Contd) —Q-( — — Coaxial plug and socket
* Variability, non-inherent
Pre-set adjustment
Resistor, general symbol
Resistor with sliding contact
Signal lamp, general symbol
Luminaire, fluorescent, general symbol
With three fluorescent tubes
Triode thyristor, type unspecified
NPN transistor with collector connected to the envelope
Junction field effect transistor with N-type channel
pierino fallaci
What are the bs50701 symbols?
What is included in bs2917?