IS 10242-3-11 (1986): Electrical installations in ships, Part 3 ......1986/03/11 · IS : 10242...
Transcript of IS 10242-3-11 (1986): Electrical installations in ships, Part 3 ......1986/03/11 · IS : 10242...
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IS 10242-3-11 (1986): Electrical installations in ships,Part 3: Equipment, Section 11: Insulating materials forshipboard power cables [ETD 20: Electrical Installation]
IS : 10242 (Part 3/Set 11) - 1986
Indian Standard SPECIFICATION FOR
ELECTRICAL INSTALLATIONS IN SHIPS PART 3 EQUIPMENT
Section 11 Insulating Materials for Shipboard Power Cables
Electrical Equipment and Installations in Ships Sectional Committee, ETDC 62
Chairman
SHRI H. K. TANEJA
Members
Representing
Indian Register of Shipping, Bombay
SHRI S. CHANDRA ( Alternate to Shri H. K. Taneja )
SHRI S. S. ANAND Directorate of Warships Projects ( DGI ), Ministry of Defence
SHRI H. P. SINGH ( Alternate ) SHRI C. R. BALASUBRAMANIAN The English Electric Co of India Ltd, Madras
SHRI K. VASUDEVAN ( Alternate ) SHRI S. N. BASSI Garden Reach Shipbuilders and Engineers
Ltd, Calcutta SHRI A. D. BHATTACHARYA ( Alternate >
CDR A. M. BHOOPATI Directorate of Electrical Engineering ( NHQ ), Ministry of Defence
CDR M. S. CHANDRASHEKHAR ( Alternate ) SHRI N. CHAWRABORTY Directorate General of Shipping, Bombay SHRI B.B. BADWAL ( Alternate ) DR L. R. CHARY The Shipping Corporation of India Ltd, Bombay
SHRI N. N. BAHADURI ( Alternate ) SHRI S. P. CHAUDHRY Delton Cable Industries Ltd, New Delhi
SHRI P. MUKUNDAN ( Alternate ) SHRI S. K. DATTA General Electric Co of India Ltd. Calcutta SHRI A. N. GHOSH Development Commissioner, Small Scale
Industries, New Delhi SHRI A. BANDYOPADHYAY ( Alternate )
SHRI L. GOPALAKRISHNAN Directorate General of Technical Development, New Delhi
( Continued on page 2 )
@ Copyright 1987
BUREAU OF INDIAN STANDARDS
This publication is protected under the Indian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.
IS : 10242 (Part f/Set 11) - 1986
( Continued from page 1 )
Membera
SHRI K. KISHORE
Representing
Directoto;rav of Marine Engineering Training,
SHRI D. K. SANYAL ( Alternate ) SHRI K. V. MANIUNATH Kirloskar Electric Co Ltd, Bangalore
SHRI CHANDIRAKUMAR ( Alternate ) SHRI R. Y. MASTER Larsen and Toubro Ltd, Bombay
SHRI SHYAM SUNDER ( Alternate ) SHRI M. A. N~~RUDDIN Siemens India Ltd, Bombay
SHRI SHRI R. JAIRAM ( Alternate ) M. M. OKA Crompton Greaves Ltd, Bombay
SHRI M. G. BHATT ( Alternate ) CDR S. S. PARMAR Directorate of Production and Inspection ( DGI ),
CDR VINOD KUMAR ( Alternate ) Ministry of Defence
SHRI H. D. PENDSE Mazagon Dock Ltd, Bombay SHRI B. D. POPAWALA ( Alternate )
DR B. R. RAGHUNATH Jyoti Ltd, Vadodara SHRI R. PALANI ( Alternate )
SHRI K. R. RAMACHANDRAN Bharat Heavy Electricals Ltd, Hyderabad SHRI S. C. BHARGAVA ( Alternate I ) DR S. K. GUPTA ( Alternate 11 )
SHRI K. V. K. RAO The Indian Cable Co Ltd, Jamshedpur SHRI S. BHATTACHARYA ( Alternate )
SHRI K. P. SARATHY NGEF Ltd, Bangalore SHRI JAVEED AHMBD ( Alternate )
SHRI P. J.C. SERENO Cochin Shipyard Ltd, Cochin SHRI A. K. MUKHERJEE ( Alternate )
SHRI B. J. D. SILVA The Scindia Steam Navigation Co Ltd, Bombay SHRI J. MANSUKHANI ( Alternate )
SHRI M. R. SRINIVASARAO Hindustan Shipyard Ltd, Vishakhapatnam SHRI P. S. P. RAO ( Alternate )
SHRI S. P. S~CHDEV, Director General, BIS ( Ex-officio Member ) Director ( Elec tech )
Secretary SHRI SUKH BIR SJNGH
Deputy Director ( Elec tech I, BIS
( Cotttittued on page 9 )
2
IS : 10242 (Part 3/Set 11) - 1986
Indian Standard SPECIFICATION FOR
ELECTRICAL INSTALLATIONS IN SHIPS PART 3 EQUIPMENT
Section 11 Insulating Materials for Shipboard Power Cables
0. FOREWORD
0.1 This Indian Standard ( Part 3/Set 11 ) was adopted by the Indian Standards Institution on 10 February 1986, after the draft finalized by the Electrical Equipment and Installations in Ships Sectional Committee had been approved by the Electrotechnical Division Council.
0.2 This standard ( Part 3/Set 11 ) is one among the series of Indian Standards on electrical installations in ships. This series consists of the following parts:
Part I General Part 2 System design Part 3 Equipment Part 4 Installation and test of completed installation Part 5 Special features
0.3 In Part 3, for ease in reference, Sections 10 to 19 have been reserved for low and medium voltage power cables while Sections 20 to 29 would deal with telecommunication cables for use in ships.
0.4 This standard ( Part 3/Set 11 ) deals with the requirements for insulating materials for shipboard cables for low voltage power systems. Other sections dealing with the low voltage power cables are as follows:
Part 3/Set 10 Low voltage cables for power systems: Section 10 General construction and test requirements for low voltage shipboard power cables ( under preparation )
Part 3/Set 12 Choice and installation of cables for low voltage power systems
0.5 In this standard, for details of test methods, reference has been made to appropriate parts of IS : 10810-1984*, which is, therefore, a neces- sary adjunct to this standard.
*Methods of test for cables.
3
IS : 10242 (Part S/Set 11) - 1986
0.6 In the preparation of this standard, assistance has been taken from IEC Pub 92-351 ( 1983 ) ‘Electrical installations in ships : Part 351 Insulating materials for shipboard power cables’, issued by the Inter- national Electrotechnical Commission ( IEC 1.
0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS : Z-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
1. SCOPE
1.1 This standard ( Part 3/Set 11 1 specifies the test requirements for electrical, mechanical and particular characteristics of insulating mate- rials intended to be used in shipboard power cables.
2. INSULATING MATERIALS
2.1 General - The types of insulating compound covered by this standard are listed in Table 1 together with abbreviated designation, operating and short-circuit maximum rated conductor temperatures.
TABLE 1 TYPES OF INSULATING COMPOUND
SL TYPE OF INSULATING ABBREVIATED NO. COMPOUND DESIGNATION
(1) (2) * 1. Thermoplastic:
(3)
- based upon polyvinyl chloride or PVC/A copolymer of vinyl chloride and vinyl acetate
2. Heat resistant PVC PVC/C 3. Elastomeric or thermosetting:
- based on butyl rubber or similar B 80 - based upon ethylene uropylene rubber EPR
or similar ( EPM or EPDM ) - based upon chemically cross-linked XLPE
polyethylene - based upon silicon rubber s 95
MAXIMUM RATED CON- DUCTOR TEMPERATURE (“C)
r----h- Normal Shorl7
Operation Circuit
(4) (5)
60 150
75 160
80 220 85 250
85 250
95 350
*Rules for rounding off numerical values ( revised).
.4
10242 (Part S/Set 11) - 1986
2.2 Electrical Characteristics - The test requirements for electrical characteristics of insulating compounds are listed in Table 2.
-
TABLE 2 TEST REQUIREMENTS FOR ELECTRICAL CHARACTERISTICS OF INSULATING COMPOUNDS
SL DESIGNATION OF INSULATINQ No. COMPOUblD
(1) (2) 1. Insulation resistance constant
Ki ( M Q km ) ( see Note )
a) at 27”C, Min
b) at maximum operating temperature
2. Increase in ac capacity after immersion in water at 50°C ( percent )
a) between the end of the first day and the end of the 14th day, Max
b) between the end of the 7th day and the end of the 14th day, Max
;P8:/ XLPE s 95 PVC/ P;C/ ~rETlHo; A
( REF TO PART No. op IS : 108109
(3) (4) (5) (6) (7) (8) 43
3 670 (t) 1500 36-7 36.7
3.67 ( t ) 2 0.037 O-037
28
I5 - 15 15 15
5 - 5 5 5
NOTE - Insulation resistance test may be done at room temperature instead of 27°C. However, in case of doubt or dispute, the test results shall be confirmed by testing at 27°C.
*Methods of test for cables. tUnder consideration.
2.3 Mechanical Characteristics - The test requirements for mechanical characteristics of both aged and non-aged insulating compounds are listed in Table 3.
2.4 Particular Characteristics - The test requirements for particular characteristics of insulation compounds are listed in Table 4..
IS : 10242 (Part 3/Set 11) - 1986
TABLE 3 TEST REQUIREMENTS FOR MECHANICAL CHARACTERISTICS OF INSULATING COMPOUNDS
( CIause 2.3 )
(1) (2) 1. Mechanical characteristics
without ageing
1 .l Tensile strength, Min ( N/mm2 )
I .2 Elongation at break, Min ( percent )
2. Mechanical characteristics after ageing in air oven
1
temperature (tolerance Treatment 9~2°C)
duration ( h )
2.1 Tensile strength:
a) minimum value ( N/mma) b) variation, MUX ( percent )
2.2 Elongation at break: a) minimum value ( percent ) b) variation, Max ( percent )
3. Mechanical characteristics after ageing in air bomb at 0.55 f PO2 MPa
I
temperature (tolerance Treatment f2”C)
duration ( h )
3.1 Tensile strength:
a ) variation, Max ( percent )
3.2 Elongation at break:
a ) variation, Max ( percent )
*Methods of test for cables.
EBPSRO’ XLPE s95 PVACI Py B$;zt
(REP TO
p2iTIY 10810*\
(3) (4) (5) (6) (7) (8)
7
4.2 12.5 5.0 12.5 125
200 200 150 150 125
11
135 135 200 80 135
168 168 240 168 168
Go *<5 4.0 - f20 12.5 12.5 f25
Go f25 - 120 - f20 150 f35 125
16
127 - - - -
40 - - - -
f30 - - - -
f30 - - - -
6
IS : 10242 (Part 3,&ec 11) - 1986
TABLE 4 TEST REQUIREMENTS FOR PARTICULAR CHARACTERISTICS OF INSULATING COMPOUNDS
SL DNONATION OF INSULATING EPR/ No. COMPOUND B 80
(1)
1.
1.1
2.
2.1
2.2
3.
4.
4.1
5. 5.1
(2) (3) Hot deformation test Test temperature ( tolerance f2”C ) - Time u$)er load 1 ls&y~;;~
Maximum permissible depth of indentation ( percent ) Hot set test
r
temperature (tolerance f2”C) time under
Treatment 4 load (minutes) 1 mechanical lstress (N/cm2 )
Maximum elongation under load ( percent ) Maximum permanent elongation ( percent )
Heat shock test
t
temperature Treatment (tolerance f 2°C)
duration (h) Visual examination
Loss 0 f mass temperature
Treatment i
(tolerance f 2°C) duration (h)
Maximum permissible loss of mass (m&ma ) Behaviour at low temperature
(5) (6) (7)
- 80 95 - - - - 6” 6” - - 50 50
250 (t) - -
15 (t) - -
20 (i) - -
175 (t) - -
15 (0 - -
- - 150 150
- - 1 1 No signs of cracks or scales
- - 80 -
- - 168 - - - 2 -
Tests to be carried out with previous
%%& test (for core diameter <125&m) ’
( CIousr 2.4 )
XLPE
(4)
- - - -
200
15
20
175
15
-
-
(RI&TO PART No. OF 1s : 10810.)
(8) 15
30
14
IO
20 and 21
Test temperature (“C) Visual examination
- - -1s -15 No signs of cracks or scales
( Continued)
7
IS : 10242 (Part B/Set 11)’ - 1986
TABLE 4 TEST REQUIREMENTS FOR PARTICULAR CHARACTERISTICS OF INSULATING COMPOUNDS - Conrd
%.
(1) 5.2
5.3
6.
DESIGNAT~~F~FULATING
(REF TO PART No.
OF 1s : 10810*)
(2) (3) (4) (5) (6) (7) (8)
Elongation test ( for cores not subjected to the bending test ) Test temperature ( “C ) (for core diameter 612.5 mm)
Impact test
- - - -15 -15
Test temperature ( for core - -
- -15 -15 diameter712.5 mm ) (“C)
Ozone resistance test Ozone concentration 0.025 - - - - ( by volume ) (percent)
o*$o
Test duration without cracks(h) 30 - - - - Visual examination No signs of cracks or scales
*Methods of test for cables. TUnder consideration.
13
,. IS : 10242 (Part 3/Set 11) - 1986
( ContinueJ from page 2 )
Panel for Cables, ETDC 62/P4
Convener
SHRl K. v. R. RAO
Members
Representing
The Indian Cable Co Ltd, Jamshedpur
SHRI S. BHATTACHARYA ( Alternate to Shri K1 V. R. Rao )
SHRI S. P. CHOUDHRY Delton Cable Industries Ltd, New Delhi SHRI M. M. HONAVAR Cable Corporation of India Ltd, Bombay
SHRI S. R. PADMANABHAN ( Alternate ) SHRI P. V. NARASIMHAN Hindustan Shipyard Ltd, Vishakhapatnam
SHRI P. S. P. RAO ( Alternate ) CDR S. S. PARMAR Directorate of Production and Inspection ( DGI),
CDR VINOD KUMAR ( Alternate ) Ministry of Defence
SHRI H. D. PENDSE Mazagon Dock Ltd, Bombay SHRI B. D. POPAWALA (Alternate )
SHRI S. SANKARA RAMAN Universal Cables Ltd, Satna SHRI R. C. AGARWAL ( Alternate )
SHRI S. R. SARVAN SIXRI P. J. C. SERENO
Industrial Cables ( India ) Ltd, Rajpura Cochin Shipyard Ltd, Cochin
SHRI K. T. KOEHUPAUL ( Alternate )
~EBNA’EIONAL SYSTEM OF UNITS ( $1 UNITS )
Base Units
QUAMIITY
Length Mass Time Electric curqeat Thermodynamic
temperature Luminous intensity
Amount of substance
Supplementary Units
QUANTITY Plane angle Solid angle
Derived Units
QUANTITU
Force Energy Power Flux Flux density Frequency Electric conductance Electromotive force Pressure, stress
UNIT
metre kilogram second ampere kelvin
candela mole
UNIT radian eteradiao
UNIT
newton joule watt weber tcsla hertz siemens volt Pascal
SYMBOL
m kg
: K
cd mol
SYMaOL rad Sr
SYMBOL
N
J W Wb T HZ s V Pa
DIWINITION
1 N = 1 kg.m/ss 1 J = 1 N.m I W = 1 J/s I Wb = 1 V.s 1 T = 1 Wb/ms 1 Hz = 1 c/s (s -1) 1 S = 1 A/V 1 V== 1 W/A 1 Pa = 1 N/ma