IEEE 315-1975

$75.83

IEEE Standard for Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters)

Published By	Publication Date	Number of Pages
IEEE	1975	453

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Description

New IEEE Standard – Inactive-Reserved. A list of graphic symbols and class designation letters for use on electrical and electronics diagrams is provided. All of the symbols are designed so that their connection points fall on a modular grid, to help those who use a grid basis for the preparation of diagrams. A substantial effort has been made to make this standard compatible with approved International Electrotechnical Commission (IEC) Recommendations (IEC Publication 117, in various parts).

PDF Catalog

PDF Pages	PDF Title
1	Title page
3	Participants
4	Foreword
7	CONTENTS
14	Quick Reference to Symbols
21	Introduction A1 Scope A.1.1 Purpose A1.2 Definition and Use
22	A2 Arrangement A2.1 Indexing, Grouping, and Standard Item Names A2.2 Significance of Columnar Placement of Symbols A2.3 IEC Identification A2.4 Alternative Symbols A3 Application A3.1 Generation of Symbols Not Shown (Buildups) A3.2 Qualifying Symbols (Section 1)
23	A3.3 Application Data Reference A3.4 Graphic Symbols and Class Designation Letters Used in Existing Technical Documents A3.5 Similar or Identical Graphic Symbols, Letter Combinations, and Notations A4 Drafting Practices Applicable to Graphic Symbols A4.1 Definitions A4.2 Orientation A4.3 Line Width A4.4 Enlargement or Reduction
24	A4.5 Relative Symbol Size A4.6 Arrowheads A4.7 Terminal Symbols A4.8 Correlation of Symbol Parts A4.9 Angle of Connecting Lines A4.10 Future or Associated Paths and Equipment A4.11 Envelope or Enclosure
25	A4.12 Addition of Supplementary Data 1. Qualifying Symbols 1.1 Adjustability, Variability
27	1.2 Special-Property Indicators
28	1.3 Radiation Indicators (electromagnetic and particulate
29	1.4 Physical State Recognition Symbols
30	1.5 Test-Point Recognition Symbols 1.6 Polarity Markings
32	1.7 Direction of Flow of Power, Signal, or Information
33	1.8 Kind of Current (General)
34	1.9 Connection of Symbol
37	1.10 Envelope, Enclosure
38	1.11 Shield, Shielding
39	1.12 Special Connector or Cable Indicator 1.13 Electret (shown with electrodes) 2. Graphic Symbols for Fundamental Items (not included in other sections) 2.1 Resistor
44	2.2 Capacitor
48	2.3 Antenna
52	2.4 Attenuator
53	2.5 Battery
54	2.6 Delay Function, Delay Line, Slow-Wave Structure
55	2.7 Oscillator, Generalized Alternating-Current Source 2.8 Permanent Magnet 2.9 Pickup, Head
56	2.10 Piezoelectric Crystal Unit (including Crystal Unit, Quartz) 2.11 Transducer, Accelerometer, Motional Pickup Transducer
57	2.12 Squib, Electric 2.13 Thermocouple (dissimilar-metals device)
58	2.14 Thermal Element, Thermomechanical Transducer 2.15 Spark Gap, Igniter Gap 2.16 Continuous Loop Fire Detector (temperature sensor) 2.17 (Ignitor Plug)
59	3. Graphic Symbols for Transmission Path 3.1 Transmission Path, Conductor, Cable, Wiring
65	3.2 Distribution Lines, Transmission Lines
67	3.3 Alternative or Conditional Wiring 3.4 Associated or Future
68	3.5 Intentional Isolation of Direct-Current Path in Coaxial or Waveguide Applications 3.6 Waveguides
69	3.7 Strip-Type Transmission Line 3.8 Termination
70	3.9 Circuit Return
71	3.10 Pressure Tight Bulkhead Cable Gland, Cable Sealing End
72	4. Graphic Symbols for Contacts, Switches, Contactors, and Relays 4.1 Switching Function 4.2 Electrical Contact
74	4.3 Basic Contact Assemblies
77	4.4 Magnetic Blowout Coil 4.5 Operating Coil, Relay Coil
78	4.6 Switch
79	4.7 Pushbutton, Momentary or Spring-Return
80	4.8 Two-circuit, Maintained or Not Spring-Return 4.9 Nonlocking Switch, Momentary or Spring-Return
81	4.10 Locking Switch
82	4.11 Combination Locking and Nonlocking Switch 4.12 Key-Type Switch, Lever Switch
83	4.13 Selector or Multiposition Switch
86	4.14 Limit Switch, Sensitive Switch
87	4.15 Safety Interlock
88	4.16 Switches with Time-Delay Feature
89	4.17 Flow-Actuated Switch 4.18 Liquid-Level-Actuated Switch 4.19 Pressure- or Vacuum-Actuated Switch
90	4.20 Temperature-Actuated Switch 4.21 Thermostat
91	4.22 Flasher, Self-Interrupting Switch
92	4.23 Foot-Operated Switch, Foot Switch 4.24 Switch Operated by Shaft Rotation and Responsive to Speed or Direction
93	4.25 Switches with Specific Features 4.26 Telegraph Key
94	4.27 Governor (Contact-making), Speed Regulator 4.28 Vibrator, Interruper 4.29 Contactor
96	4.30 Relay
98	4.31 Inertia Switch (operated by sudden deceleration) 4.32 Mercury Switch
99	4.33 Aneroid Capsule (air pressure) Operated Switch 5. Graphic Symbols for Terminals and Connectors 5.1 Terminals
101	5.2 Cable Termination 5.3 Connector, Disconnecting Device, Jack, Plug
104	5.4 Connectors of the Type Commonly Used for Power-Supply Purposes
106	5.5 Test Block 5.6 Coaxial Connector, Coaxial Junction
107	5.7 Waveguide Flanges, Waveguide Junction
108	6. Graphic Symbols for Transformers, Inductors, and Windings 6.1 Core
109	6.2 Inductor, Winding (machine or transformer), Reactor Radio-Frequency Coil
110	6.3 Transductor, Saturable-Core Inductor, Saturable-Core Reactor
112	6.4 Transformer, Telephone Induction Coil, Telephone Repeating Coil
120	6.5 Linear Coupler 7. Graphic Symbols for Electron Tubes and Related Devices 7.1 Electron Tube
124	7.2 General Notes
125	7.3 Typical Applications
129	7.4 Solion, Ion-Diffusion Device
130	7.5 Coulomb Accumulator, Electrochemical Step-Function Device 7.6 Conductivity Cell 7.7 Nuclear-Radiation Detector (gas-filled), Ionization Chamber, Proportional Counter Tube, Geiger-Müller Counter Tube
131	8. Graphic Symbols for Semiconductor Devices 8.1 Semiconductor Device, Transistor, Diode 8.2 Element Symbols
136	8.3 Special-Property Indicators
137	8.4 Rules for Drawing Style 1 Symbols
138	8.5 Typical Applications, Two-Terminal Devices
143	8.6 Typical Applications, Three- (or more) Terminal Devices
149	8.7 Photosensitive Cell
150	8.8 Semiconductor Thermocouple 8.9 Hall Element, Hall Generator 8.10 Photon-Coupled Isolator
151	8.11 Solid-State Thyratron (replacement type)
152	9. Graphic Symbols for Circuit Protectors 9.1 Fuse (one-time thermal current-overload device)
153	9.2 Current Limiter (for power cable)
154	9.3 Lightning Arrester, Arrester (electric surge, etc.), Gap
155	9.4 Circuit Breaker
156	9.5 Protective Relay
160	10. Graphic Symbols for Acoustic Devices 10.1 Audible-Signaling Device
162	10.2 Microphone, Telephone Transmitter 10.3 Handset, Operator’s Set
163	10.4 Telephone Receiver, Earphone, Hearing-Aid Receiver
164	11. Graphic Symbols for Lamps and Visual-Signaling Devices 11.1 Lamp
166	11.2 Visual-Signaling Device
168	12. Graphic Symbols for Readout Devices 12.1 Meter
169	12.2 Electromagnetically Operated Counter, Message Register
170	13. Graphic Symbols for Rotating Machinery 13.1 Rotating Machine
171	13.2 Field, Generator or Motor
172	13.3 Winding Connection Symbols
173	13.4 Applications: Direct-Current Machines
178	13.5 Applications: Alternating-Current Machines
181	13.6 Applications: Alternating-Current Machines with Direct-Current Field Excitation
182	13.7 Applications: Alternating- and Direct-Current Composite
183	13.8 Synchro
184	14. Graphic Symbols for Mechanical Functions 14.1 Mechanical Connection, Mechanical Interlock
185	14.2 Mechanical Motion
186	14.3 Clutch, Brake
187	14.4 Manual Control
188	15. Graphic Symbols Commonly Used in Connection with VHF, UHF, SHF Circuits 15.1 Discontinuity (Introducing intentional wave reflection)
190	15.2 Coupling
192	15.3 Directional Coupler
193	15.4 Hybrid, Directionally Selective Transmission Devices
194	15.5 Mode Transducer
195	15.6 Mode Suppressor 15.7 Rotary Joint (radio-frequency rotary coupler)
196	15.8 Nonreciprocal Devices
197	15.9 Resonator, Tuned Cavity
198	15.10 Resonator (cavity-type) Tube 15.11 Magnetron
199	15.12 Velocity-Modulation (velocity-variation) Tube 15.13 Transmit-Receive (TR) Tube
200	15.14 Traveling-Wave-Tube
202	15.15 Balun 15.16 Filter 15.17 Phase Shifter (matched)
203	15.18 Ferrite Bead Ring 15.19 Line Stretcher (with female connectors shown)
204	16. Graphic Symbols for Composite Assemblies 16.1 Circuit Assembly, Circuit Subassembly, Circuit Element
205	16.2 Amplifier
207	16.3 Rectifier 16.4 Repeater (includes Telephone Repeater)
208	16.5 Network, Artificial Line (other than delay line) 16.6 Phase Shifter, Phase-Changing Network
209	16.7 Chopper
210	16.8 Diode-Type Ring Demodulator, Diode-Type Ring Modulator 16.9 Gyro, Gyroscope, Gyrocompass 16.10 Position Indicator
211	16.11 Position Transmitter 16.12 Fire Extinguisher Actuator Heads
212	17. Graphic Symbols for Analog and Digital Logic Functions 17.1 Operational Amplifier 17.2 Summing Amplifier 17.3 Integrator (Amplifier)
213	17.4 Electronic Multiplier 17.5 Electronic Divider 17.6 Electronic Function Generator 17.7 Generalized Integrator 17.8 Positional Servomechanism
214	17.9 Function Potentiometer 18. Graphic Symbols for Digital Logic Functions 18.1 Digital Logic Functions 19. Graphic Symbols for Special-Purpose Maintenance Diagrams 19.0 Introduction
215	19.1 Data-Flow Code Signals
217	19.2 Functional Circuits
218	20. Graphic Symbols Commonly Used on System Diagrams, Maps, and Charts 20.1 Radio Station
220	20.2 Space Station
221	20.3 Exchange Equipment 20.4 Telegraph Repeater
223	20.5 Telegraph Equipment
226	20.6 Telephone Set
228	21. Graphic Symbols Commonly used on System Diagrams, Maps, and Charts 21.1 Generating Station 21.2 Hydroelectric Generating Station
229	21.3 Thermoelectric Generating Station
230	21.4 Prime Mover (qualifying symbols) 21.5 Substation
231	22. Class Designation Letters 22.1 Class Designation Letter 22.2 Special Considerations for Class Designation Letter Assignment
232	22.3 Item Names 22.4 Class Designation Letters: Alphabetical List
240	22.5 Item Names: Alphabetical List 22.6 Item Designations, IEC 113-2 23. Referenced Standards and Canadian Standard Z99 Modifications 23.1 Referenced Standards
241	100 Canadian Standard Z99 Modifications to American National Standard Y-32.2-1975 (IEEE Std 315-1975)
242	Annex A Cross Reference List of Changed Item Numbers
243	Annex B Reference Data International Electrotechnical Commission (IEC) Publication 117″ Recommended Graphical Symbols
245	Annex C Revised or Deleted Symbols
246	Annex D Revised or Deleted Symbols
256	Annex E Revised or Deleted Symbols
261	Annex F Cross-Reference List of Class Designation Letters
265	IEEE STD 315A-1986
267	Foreword Participants
269	CONTENTS
274	AA1 Purpose AA2 Scope AA3 Organization AA4 References
276	1. Qualifying Symbols 1.1 Adjustability, Variability 1.2 Special-Property Indicators
277	1.3 Radiation Indicators (electromagnetic and particulate)
278	1.4 Physical State Recognition Symbols 1.7 Direction of Flow of Power, Signal, or Information
280	1.8 Kind of Current
281	1.10 Envelope, Enclosure 1.14 Operational Dependence On a Characteristic Quantity
282	1.15 Signal Identifiers 1.16 Signal Waveforms
283	1.17 Control by Nonelectrical Quantities
284	2. Graphic Symbols for Fundamental Items (not included in other sections) 2.1 Resistor 2.2 Capacitor
285	2.3 Antenna
287	2.4 Attenuator
288	2.6 Delay Function, Delay Line, Slow-Wave Structure
290	2.9 Pickup, Head 2.10 Piezoelectric Crystal Unit (including Crystal Unit, Quartz
291	2.17 Ignitor Plug 2.18 Signal Waveforms
292	2.19 Faults 3. Graphic Symbols for Transmission Path 3.1 Transmission Path, Conductor, Cable, Wiring
294	3.2 Distribution Lines, Transmission Lines
297	3.6 Waveguide
298	3.10 Pressure Tight Bulkhead Cable Gland, Cable Sealing End 4. Graphics Symbols for Contacts, Switches, Contactors, and Relays 4.1 Switching Function
299	4.3 Basic Contact Assemblies
304	4.6 Switch
306	4.14 Limit Switch, Sensitive Switch 4.21 Thermostat
307	4.22 Flasher, Self-Interrupting Switch 4.29 Contactor
308	4.34 Multipole and Multiposition Switches
315	4.35 Switchgear and Controlgear
316	4.36 Block Symbols for Motor Starters
318	4.37 Operating Devices for Electromechanical (all or nothing), Relays
321	5. Graphic Symbols for Terminals and Connectors 5.3 Connector, Disconnecting Device, Jack, Plug
324	5.6 Coaxial Connector, Coaxial Junction 6. Graphic Symbols for Transformers, Inductors, and Windings 6.1 Core
325	6.2 Inductor, Winding (machine or transformer), Reactor, Radio-Frequency Coil, Telephone Retardation Coil
326	6.4 Transformer, Telephone Induction Coil, Telephone Repeating Coil
337	6.6 Ferrite Cores—Symbol Elements
338	6.7 Ferrite Cores
339	6.8 Magnetic Storage Matrices (Topographical Representation) 7. Graphic Symbols for Electron Tubes and Related Devices 7.1 Electron Tube
344	7.3 Typical Applications
345	7.4 Solion, Ion-Diffusion Device
346	7.5 Coulomb Accumulator, Electrochemical Step-Function Device
347	7.7 Nuclear-Radiation Detector, Ionization Chamber, Proportional Counter Tube, Geiger-Müller Counter Tube
348	8. Graphic Symbols for Semiconductor Devices 8.2 Element Symbols
351	8.3 Special-Property Indicators
352	8.5 Typical Applications, Two-Terminal Devices
357	8.6 Typical Applications, Three- (or more) Terminal Devices
364	8.10 Photon-Coupled Isolator
365	8.12 Ionizing Radiation Detectors
366	9. Graphic Symbols for Circuit Protectors 9.1 Fuse
367	9.3 Lightning Arrester, Arrester (electric surge, etc), Gap
368	9.4 Circuit Breaker
370	9.6 Protective Relays—Block Symbols and Qualifying Symbol
372	9.7 Examples of Protective Relays
374	9.8 Other Relays Devices
375	10. Graphic Symbols for Acoustic Devices 10.1 Audible-Signaling Device
376	11. Graphic Symbols for Lamps and Visual-Signaling Devices 11.1 Lamp
377	11.3 Electromechanical Signal 12. Graphic Symbols for Readout Devices 12.1 Meter, Instrument
378	12.2 Electromagnetically Operated Counter, Message Register 12.3 Indicating, Recording, and Integrating Instruments, General Symbols
380	12.4 Examples of Indicating Instruments
382	12.5 Examples of Recording Instruments 12.6 Examples of Integrating Instruments
385	12.7 Counting Devices
386	12.8 Telemetering Devices 12.9 Electric Clocks
387	13. Graphic Symbols for Rotating Machinery 13.1 Rotating Machine 13.5 Applications: Alternating-Current Machines
388	13.6 Applications: Alternating-Current Machines with Direct-Current Field Excitation 14. Graphic Symbols for Mechanical Functions 14.2 Mechanical Motion
390	14.3 Clutch, Brake
391	14.4 Manual Control
394	14.5 Detents, Latching, and Blocking
395	15. Graphic Symbols for Commonly Used in Connection with VHF, UHF, and SHF Circuits 15.2 Coupling
396	15.4 Hybrid, Directionally Selective Transmission Devices 15.5 Mode Transducer 15.6 Mode Suppressor 15.7 Rotary Joint (radio-frequency rotary coupler ) 15.8 Nonreciprocal Devices
397	15.9 Resonator, Tuned Cavity
398	15.10 Resonator (cavity-type) Tube
399	15.11 Magnetron
400	15.12 Velocity-Modulation (velocity-variation) Tube
402	15.13 Transmit-Receive (TR) Tube 15.14 Traveling-Wave-Tube
406	15.16 Filter 15.20 Multiport Devices
407	15.21 Lasers and Masers
409	16. Graphic Symbols for Composite Assemblies 16.1 Circuit Assembly, Circuit Subassembly, Circuit Element
410	16.2 Amplifier 16.9 Gyro, Gyroscope, Gyrocompass
411	16.13 Changer, General Symbol—Converter General Symbol
412	16.14 Galvanic Seperator 16.15 Heat Source, General Symbol 16.16 Generator, General Symbol
414	16.17 Sensors and Detectors 16.18 Applications of Sensors
415	17. Graphic Symbols for Analog and Digital Logic Functions 17.10 Analog Elements for Computations and Control
424	20. Communication Equipment 20.3 Exchange Equipment (Relocation of 20.3.2 and 20.3.3) 21. Graphic Symbols Commonly Used on System Diagrams, Maps, and Charts 21.1 Generating Station
425	21.2 Hydroelectric Generating Station
426	21.3 Thermoelectric Generating Station
427	21.4 Prime Mover (qualifying symbols)
428	21.5 Substation 21.6 Wind Generating Station
429	21.7 Plasma Generating Station 24. Telecommunications Switching and Peripheral Equipment 24.1 Switching Systems
433	24.2 Block Symbols for Switching Equipment 24.3 Qualifying Symbols for Transducers, Recorders, and Reproducers
434	24.4 Recorders and Reproducers
435	25. Telecommunications Transmission 25.1 Amplified Circuits
436	25.2 Qualifying Symbols for Pulse Modulation
437	25.3 Signal Generator, Waveform Generator
438	25.4 Changers, Converter, General Symbol
439	25.5 Filters
440	25.6 Networks
442	25.7 Electronic Chopping Device 25.8 Threshold Devices
444	25.9 Terminating Sets
445	25.10 Modulator, Demodulator, Discriminator
446	25.11 Concentrators, Multiplexers
447	25.12 Frequency Spectrum Diagram Symbol Elements
450	25.13 Examples of Frequency Spectrum Diagrams
452	25.14 Fiber Optic Devices

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Standard Title	IEEE Standard for Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters)
Published Code	IEEE
Publication Date	1975
Pages Count	453

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IEEE 315-1975

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