BS 3939-7:1985
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Graphical symbols for electrical power, telecommunications and electronics diagrams Switchgear, controlgear and protective devices
Hardcopy , PDF
15-12-1996
English
28-06-1985
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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Superseded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 | |
| Supersedes |
|
| 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 |
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