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close this bookCircuits, Formulas and Tables Electrical Engineering - Basic vocational knowledge (Institut für Berufliche Entwicklung, 201 p.)
close this folder1. Selected Graphical Symbols of Electrotechnology
View the document1.1. Graphical Symbols for General Circuit Elements
View the document1.2. Graphical Symbols for Types of Current, Voltage and Connections
View the document1.3. Graphical Symbols for Lines and Line Connections
View the document1.4. Graphical Symbols for Resistors
View the document1.5. Graphical Symbols for Capacitors
View the document1.6. Graphical Symbols for Coils and Transformers
View the document1.7. Graphical Symbols for Current and Voltage Transformers
View the document1.8. Graphical Symbols for Electrochemical and Electrothermal Sources
View the document1.9. Graphical Symbols for Tubes
View the document1.10. Graphical Symbols for Semiconductors
View the document1.11. Graphical Symbols for Switching Devices
View the document1.12. Graphical Symbols for Machines
View the document1.13. Graphical Symbols for Meter Movements and Measuring Instruments
View the document1.14. Graphical Symbols of Electroacoustics
View the document1.15. Graphical Symbols for Wiring Plans

1.11. Graphical Symbols for Switching Devices

Term

Graphical Symbol


in full

simplified

Switching members



make contacts, general

break contacts, general

change-over switch, general


change-over switch with central rest position


Relay switching members



make contacts

break contacts

change-over switch with interruption in switching

Switches



hand-actuated lever switch


make contacts with automatic resetting

break contacts with automatic resetting


disconnecting switch, three-pole


power circuit-breaker, three-pole

power breaker, three-pole


power switch, three-pole

switch, three-pole, with one make contact and two break contacts

Drive members



drive, general


drive, thermal


drive by centrifugal force


drive by piston


drive by electrical motor


drive by cams


drive by float


manual drive


manual drive with automatic resetting


foot drive


actuation by means of a key


drive by relay or contactor


Electrical drive systems



relay winding only for alternating current


winding of a relay insensitive to alternating current


winding of an electro-thermal relay


winding of a remanence relay


winding of a polarised relay


winding for relay tripping by over-current

winding for relay tripping by undercurrent

winding for relay tripping by reverse current

winding for relay tripping by overvoltage

winding for relay tripping by undervoltage

winding for relay tripping by error voltage

winding for thermal tripping of relay

relay winding with delay of attraction


relay winding with delay of dropping


relay winding with delay of attraction and dropping


relay winding with electrothermal delay


relay winding with electronic delay


winding for relay tripping by open-circuit working


winding for relay tripping by closed-circuit working


winding for relay tripping by overcurrent with time lag


Plugged connections



receptacle


plug


connector, single-pole


connector, four-pole


h.f. coaxial receptacle


h.f. coaxial connector


h.f. coaxial connector, two - core