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Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 12032-3 (1987): Graphical symbols for diagrams in thefield of electrotechnology, Part 3: Conductors andconnecting devices [ETD 1: Basic ElectrotechnicalStandards]
IS : 12032 ( Part 3 ) - 1987 UDC 621.3*061 : 003’62 IECPmb6617-3(1983)
Indian Standard
GRAPHICAL SYMBOLS FOR DIAGRAMS IN THE FIELD OF ELECTROTECHNOLOGY
PART 3 CONDUCTORS AND CONNECTING DEVICES
( IEC Title : Graphical Symbols for Diagrams - Part 3 : Conductors and Connecting Devices )
National Foreword
This Indian Standard ( Part 3 ) which is identical with IEC Pub 617-3 ( 1983 ) ‘Graphical symbols ror diagrams - Part 3 : Conductors and connecting devices’; issued by the International Electrotechnical Commission ( IEC ), was adopted by the Bureau of Indian Standards on the recommendation of the Basic 5lectrotechnical Standards Sectional Committee and approval of the Electrotechnical Division Council.
Cross Reference
International Standard
IEC Pub 445 ( 1973 ) Identification of apparatus terminals and general rules for a uniform system of terminal marking, using an alpha- numeric notation
Corresponding Indian Standard
IS : 11353-1985 Guide for uniform system of marking and identification of conductors and apparatus terminals
Adopted 18 June 1987 I
0 ‘November 1988, BIS I
Gr 5
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
+ NEW DELHI llCCO2 .q
,
As in the Original Standard, this Page is Intentionally Left Blank
IS : 12032 (Part 3)-1987 IEC Pub 617-3 (1983)
SECTION 1 - CONDUCTORS
No.
03-01-01
Symbol Description
Conductor Group of conductors Line Cable Circuit Transmission path (for example, for microwaves)
OIi-OlM Form I rb
Notes I. - Singl+ne representation of conductors.
When a single line represents a group of con- ductors, their number may be indicated either by adding small strokes or one stroke and a figure.
Examples:
Three conductors
03-01-03 Form 2
,3 I
2. - Additional information may be indicated as follows:
Above the line: kind of current, system of distribution, frequency and voltage;
Below the line: the number of conductors of the circuit followed by a multiplication sign and the cross-sectional area of each conduc- tor. If different sizes of conductors are used, their particulars should be separated by a plus sign. The conductor material may be in- dicated by its chemical symbol.
034144
03-01-05
- 11ov
ZxlZOmm* Al
3N ‘L 50 Hz 4OOV
Examples: Direct current circuit, 110 V, two ahtminium conductors of 120 mm*
Three-phase circuit, 50 Hz, 400 V, three conductors of 120 mm< with neutral of 50 mm’
03-01-06
3x120 + 1x50
Flexible conductor
03-01-07 Screened conductor
The note with symbol 03-01-09 applies
03-01-08 Twisted conductors, two conductors shown
The note with symbol 03-01-09 applies
3
IS : 12032 (Part 3)-1987 IEC Pub 617-3 (1983)
No.
03-01”09
SplbOl
fi I I I I
Description
Conductors in a cable, three conductors shown
Note. - If several conductors are in a cable (or twisted together or in a screen) but the lines represent- ing them on a diagram are not adjacent to each other, the method shown below may be used.
03-01-10 Example:
Two conductors out of five in a cable
03-01-11
03-01-12
n Coaxial pair
Note. - If the coaxial structure is not maintained, the tangential line should be drawn only on the co- axial side.
Example:
Coaxial pair connected to terminals
--
03-U-13
03-01-14
Coaxial pair with screen
Conductor or cable not connected
03-01-1s Conductor or cable not connected and specially insu- lated
1
4
IS : 12032 (Part 3)-1987 IEC Pub 617-3 (1983)
SECTION 2 - TERMINALS AND CON~IXTIONS OF CONDUCTORS
No. Symbol
3342-01 0
B342-02 0
Description
Connection of conductors
Terminal
Note. - The circle rtIa9 be filled in.
B-02-03 Terminal strip, example shown with terminal markings
034254
l-
Junction of conductors Form 1
03-cr2-05 Form 2
-t -
03-02-06
+-
Double junction of conductors Form 1
0342-07 Form 2
+
03-02-08 Conductor joint In-line splice
03-02-09 Connection common to a group of similar items
0342-10
3-1
10
Nore. - The total number of similar items may be indi- cated by a figure near the common connection symbol.
Example:
Multipled uniselector banks shown for 10 banks
03-02-11
i
II
Interchange of conductors, change of phase sequence or inversion of polarity, shown for n conductors in single- line representation
Note. - The interchanged conductors may be indicated.
For the identification of the conductors, IEC Publication 445: Identification of Apparatus TerminaIs and General Rules for a Uniform System of Terminal Marking, Using an AIphanumeric Notation, applies.
03-m-12
e
Example:
Change of phase sequence
Ll
t3
‘.5 5
IS : 12032 (Part 3)-1987 IEC Pub 617-3 (1983)
No.
03-02-13
Description
Neutral point in multi-phase system, shown in single- line representation
03-U&14 Example: Synchronous generator, three-phase, both leads of each phase brought out, shown with external neutral point
6
IS : 12032 (Part 31-1987 IEC Pub 617-3 (1983)
SECTION 3 - CONNECTING DEVICES
NO. Symbol Description
Preferred form .
Other form
03-03-01 4
Socket (female) .,
Pole of a socket
03-03-02 --_(
03-03-03 - Plug (male)
Pole of a plug
03-03-04 t-
03-03-05 +I--
Plug and socket (male and female)
03-03-06 _(t_
03-03-07 --I+-
Multipole plug and socket, shown with six poles:
zz
multi-line representation
zz
*-
03-03@$g
---c+- _
single-line representation
03-03-O!I
--u
Connector assembly, fixed portion
Note. - The symbol should be used only when it is de-
sired to distinguish between the fixed and free
parts of the connector assembly.
03-03-10
iI
Connector assembly, movable portion
The note with symbol 03-03-09 applies
0343-11
-al- <<
Mated connector assembly. Plug-side fixed and socket-
side movable
The note with symbol 03-03-09 applies
7
IS : 12032 (Part 3)-1987 IEC Pub 617-3 (1983)
Plug and jack, telephone type, two-pole
Note. - The longest pole on the plug symbol represents the tip of the plug, and the shortest the sleeve.
The note with symbol 03-03-12 applies
Break or isolating jack, telephone type
Coaxial plug and socket
Note. - If the coaxial plug or socket is connected to a coaxial pair, the tangential line(s) should be ap- propriately extended.
Connecting link, closed
Connecting Iink, open
Plug and socket-type connector, for example U-link:
male-male
03-03-21 male-female
03-03-22 male-male, with socket access
.
8
b
IS : 12032 (Part 3)-1987 IEC Pub 6173 (1983)
SECTION 4 - CABLE FITTINGS
Cable sealing end, shown with one three-core cable
03++&? =4==
Cable sealing end, shown with three one-core cables
Straight-through joint box, shown with three conduc-
03-04-03 + Zli-line representation
o3-04-04. ,3 ,3 single-line representation
I I
03-04-05
%I?
Junction box, shown with three conductors with T-con- nections:
multi-line representation
03- T
single-line representation
03-04-07 Pressure-tight bulkhead cable glahd, shown with three cables
Note. - The high pressure side is the longer side of the trapezoid thus retaining gland in bulk-head.
9 Reprography Unit, BIS, New Delhi, India
