IS 1255 (1983): Code of practice for installation and ...

1 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.

2 1 + , 1 + 0 1 ' 5 . Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru The Right to Information, The Right to Live Step Out From the Old to the New . IS 1255 (1983): Code of practice for installation and maintenance of power cables up to and including 33 kV. rating [ETD 9: Power Cables]. ! $ ' + - . Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge . ! > 0 B .. Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen . IS : 1255 1983. ( 1HI). Indian Standard CODE OF practice FOR installation . AND MAINTENANCE OF POWER CABLES. UP TO AND INCLUDING 33 kV RATING. ( Second Revision). Third Reprint APRIL 1999.

3 UDC : Copyright 1984. BUREAU OF INDIAN STANDARDS. MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG. NEW DELHI 110002. Gr 13 December 1984. IS : 1255 - 1983. Indian Standard CODE OF practice FOR installation . AND MAINTENANCE OF POWER CABLES. UP TO AND INCLUDING 33 kV RATING. ( Second Revision). Power Cables Sectional Cornmrttcc, ETI)(' 59. ( huu man Represent ine SHIH M, L. rJONultn Bombay Llectrrc Supply & 1ran-port Undertaking. Bombay Members SHRI S. M. SAKHAlK I\R ( Alternate to S".I M. L Dongre ). SURI J. P. AOAL Bhardt Heavy Elecmcats ltd. Hvdet abad SHRI B. P. R AI ( Alternate ). SHRI M R. BHA r T d[& Convulung I ngmecrs, Bombay SHRI f).]

4 K. B i\C\lJ ( Alternate ). CHIEF ENGIN ER ( l'llC1RI( AL ) 1 Central Pub lie Work" Department, New Delhi SURVr,VOR 01 WORK~ ( r ll:C I ) V ( Alternate ). OJ. K. DA\ GUfJrA Calcutta Electric Supply Corporauon (India) ltd. Calcutta SHRI P. NEOGI ( Alt ernatc ). OiRfcroa Central Power Research lnvntute, Bangalore SHit) M. C. R A1RA ( Alternate ). DIRECTOR Of MINES SAf"F1Y Duectorate General of Mmc-, Safety. Dhanbad ( EI ) ( HQ ). D,RECTOR OF MIN~.s SAfFTY ( ELEt.'- ) ( Alternat e ). ~HtH RAV( K. OtH. cable and Conductor Mauutactuiei s Avsociauon of Indra, New Deihl SURf K. G. WARRIf-R ( Alternate ). StIRJ P. GHOSE Indian C'abk Co Ltd.)

5 Jamvhedpur SMRl S. BHATI ACHARY A \ 1 Jtt'rnalt'). SURf M. M. HONAVAR cable Corporauon of lndra ltd. Bornbav SUR' K. o. MATHEW ( Alternate ). 'iHRI K. S. JOSHI Bombay Suburban Elccrnc Supplv Ltd, Bornbav SURI R. K. ShHOAI ( Alternate ). ~HRI S. I. K AKKAR Umvcrsal Cables Ltd, Sarna SHRI R. C. ( Alt ernate ). ( ( onttnued on page 2 ). C Co /J)'ra,hl 1984. BURl-AU OF INDIAN STANDAR[)S. ThiS publicauon 'I protected under the Indian C(J/J.~"ght Ad (XIV of 19~7) and reproduction In whole or m part by any means except with WTIUt"n permission of tbe publisher Ihall be deemed to be an mfrmgernent of cOPYright under the laid Act, IS : 1255 - 19M3.]

6 ( Continued Inn" pae 1 ). f ember Representing SHRI R \1 K, Mil vt. Deihl Electric Supply Undertaking, New Deihl SHRI M. K. AHtIJ \ ( Altcrnat c ). LT-COl. S. S. MOH,\NTY Controllerate of Inspection Electronics, Bangalorc SHRI A. L. KH \NN.\ ( Alternate). SHRI H. K. MtJNDH \R \ Oriental Power cable ') Ltd, Kola StiRI 1\. K. J \ IN ( Alt et nat c ). SURI R. V. N \R' Y \N.\N General of Supplies &. Disposals ( Inspccuou Wing). New Delhi SHIU D. R. Cu \NOR.\ ( Alt ci 110t,' ). SHRI Jt. M. P \1 The Feder anon of Electricity Undertaking, nf , Bombay SHIUMATJ C', H \Uct \ ( Alternut e ). ~ Hitl II. C. P \NDE Directorate of Technical Development & Production ( Air ), New I)clhi SHkr V, K.

7 ~)H \RM \ ( Alternate ). SUR I P \RW.\)' The Premier Cahlt- Co Ltd, Ernakulam ( Kcrala ). SHRI A. K. R \M.\N Asian Cables Corporation Ltd, Bombay SHRI L. K. S \NGJU Fort Glostet Industries Ltd, Howrah SURJ A. S. BJ' \ IT ,CtI \RJII' ( Alternate ). J>R M. S. SlJKHIJ \ Punjab Research Institute, Rajpura SURf U, ~, VERM \ National Test House, Calcutta SHRI R. R ,M \KRISHN \ ( Alt ernut e ). SURf S. P. S \CUDEV, Director General, BIS Ex-officio Membe ). Director (Elec tech). Secrct ari K, M. BH \TI \. SHRI. Senior Deputy Director ( Elcc tech), HIS. Panel for Code of practice for installation and Testing of Cables, E rD(~ S9jP6.

8 Convener SHRI M. M. HON vv \K cable Corporation or India Ltd, Bombay Members SHRI A. S. PUR \ND.\Rt: ( Alternate to SHiu M. M. IIONAV\R). SUR' R. C'H \NOR "MOUll Tata J Iydro Electric Power Supply Co Ltd, Bombay SHRIMA fI C. BAllG ,\ ( Alternate ). SHRI P. (~H \rrERJfl-. Indian cable Co Ltd, Jarnshedpur SHRI S. I3H.\TI ,CH.\RYA ( Alternate ). SHit. M. L. DONORB Bombay Electric Supply & Transport Undertaking, Bombav SHRI S. M. S \KH.\LK.\R ( Alternate) . SURI P. N. M \ THOR Fort Gloster I ndustries Ltd, Calcutta SHRI O. P. KUlSHRESHTH.\ ( Alternate ). SHRI J, V. MEHTA Ahmedabad Electricity Co Ltd, Ahmadabad SHRI B. K. MUNDHARA Oriental Power Cables Ltd, Kola SURI R.)

9 C. MIlT AL ( Alternate ). SHUI B. Roy CHOWDHURY Calcutta Electric Supply Corporation ( India) Ltd , Calcutta SHRI P. Nxoot ( Alternate ). SURI R .. K. SEHGAL Bombay Suburban Electric Supply Ltd, Bombay SHItI M. N. JOOlJo~K AR ( Alternate ). 2. IS : 1255 - 1983. CONTENTS. PAGE. Q. FOREWORD 5. 1. SCOPE 6. 2. TERMINOLOGY 6. SECTION 1 SELECTION OF CABLES. 3. TYPES OF CABLES AND THEIR ApPLICATIONS 7. 4. GUIDELINES FOR SELECTION AND PLANNING OF CARLE. installation 7. SECTION 2 GENERAL. s. GUIDELINES FOR (~ABLE LAYING AND installation 13. 6. METHODS OF CABLES LAYING AND installation 16. 7. PACKING, TRANSPORT AND STORAGE 24. SECTION 3 LAYING AND installation .)

10 8. GENERAL 25. 9. TRENCHING ~9. 10. LAYING OF CABLES 30. 11. REINSTATEMENT 35. 12. JOINTING Of CABLES 3b 13. EARTHING AND BONDING 57. SECTION 4 TESTING OF cable installation . 14. Tl:STING AND ELECTRICAL MEASUREMENTS OF INSTALLATIONS 58. 15. cable installation PLAN 61. SECTION 5 MAINTENANCE. 16. MAINTENANCE OF cable installation 61. SECTION 6 FAULT LOCALIZATION. )7. FAULT LOCALIZATION OF 63. ApPENDIX A CONSTRUCTIONAL DETAILS OF POWER 7g ApPENDIX B RELATIVE MERITS/DEMERITS OF DIFFERENT. MErnODS OF cable LAYING 84. 3. AMENDMENT NO. 1 JULY 1990. TO. IS : 1255 - 1983 CODE OF practice FOR. installation AND lVlAIN1'ENANCE Of' POWER.