Graphical symbols for electrical power, telecommunications and electronics diagrams Switchgear, controlgear and protective devices

Available format(s)

Hardcopy , PDF

Superseded date

12-15-1996

Language(s)

English

Published date

06-28-1985

Publisher

British Standards Institution

National foreword
Committees responsible
List of symbols
Chapter I : General notes
Chapter II : Contacts
Section
1 Qualifying symbols
2 Contacts with two or three positions
3 Passing contacts with two positions
4 Early and late operating contacts
5 Examples of contacts with intentional delay
6 Examples of spring return and non-spring return
    (stay put) contacts
Chapter III : Switches, switchgear and starters
7 Single-pole switches
8 Position and limit switches
9 Temperature sensitive switches
10 Speed change sensitive contacts, mercury and
    levelling switches
11 Examples of multi-pole and multi-position switches
12 Block symbols for complex switches
13 Switchgear and controlgear
14 Block symbols for motor starters
Chapter IV : Electromechanical all-or-nothing relays
15 Operating devices
Chapter V : Measuring relays and related devices
16 Block symbols and qualifying symbols
17 Examples of measuring relays
18 Other devices
Chapter VI : Proximity and touch-sensitive device
19 Sensors and detectors
20 Switches
Chapter VII : Protective devices
21 Fuses and fuse-switches
22 Gaps and arrestors
23 Fire-extinguishers
Chapter VIII: Miscellaneous symbols
24 Igniters and flag-indicators
Appendix A : Older symbols for contacts, switchgear
               and protective devices
A1 Contacts
A2 Switchgear
A3 Fuses

Gives graphical symbols with definitions for use on electrical diagrams. Symbols for switchgear, controlgear and electrical protective devices are given.

Committee	GEL/3
DevelopmentNote	Supersedes BS 3939(1966), BS 3939(1968) and BS 3939(1970) (07/2004)
DocumentType	Standard
Pages	32
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN 60617-7:1996
Supersedes	BS 3939:Guiding principles:1970 BS 3939 Section 29:1978 BS 3939:Introduction:1966 BS 3939 Section 25:1970 BS 3939 Section 26:1970 BS 3939 Section 20:1968 BS 3939 Section 22:1971 BS 3939 Section 27:1972 BS 3939 Section 30:1978 BS 3939 Section 28:1972 BS 3939 Section 23:1978 BS 3939 Section 24:1970 BS 3939 Section 9:1967

IEC 60113-4:1975	Diagrams, charts, tables - Part 4: Recommendations for the preparation of circuit diagrams
IEC 60617-2:1996	Graphical symbols for diagrams - Partie 2: Symbol elements, qualifying symbols and other symbols having general application