Indian Standard ( Reaffirmed 2001) SPECIFICATION FOR PVC INSULATION AND SHEATH OF ELECTRIC CABLES ( First Revision ) Fourth Reprint JANUARY 1998 UDC 621.315.221.8:621.315.616.96[678.743.22] B U R E A U QP I N D I A N BTANDARDI MANAlL EHAVAN, 9 BAHADUR SHAH ZAPAR INAltO- NEW DELHI 110002 s#pmbn 1984 IS : 5831.1984 Indian Standard SPECIFICATION FOR PVC INSULATION AND SHEATH OF ELECTRIC CABLES ( First Revisiop ) Power Cables Sectional Committee, ETDC 59 Chairman SEIRI M. L. DON~RE M-3, Satyam, 88, Sion Circle, Bombay Members Represent&g SHRI J. P. ANAL Bharat Heavy Electricals Ltd, Hyderabad S HRI B. P. RAI ( Alternate) S HRI M. R. BEAT Tata Consulting Engineers, Bombay SHRI D. K. BASU ( Alternate ) CHIEF ENGINEER ( EL E C T R I C A L ) I Central Public Works Department, New Delhi S URVEYOR o F WORKS ( ELECT ) V ( Alternate ) D R K. DAS G U P T A Calcutta Electric Supply Corporation ( India ) Ltd, Calcutta S HRI P. NEOQI ( Alternate ) D IRECTOR Central Power Research Institute, Bangalore S HRI M. C. RATRA (Alternate ) D IRECTOR OR M I N E S S AFETY Directorate General of Mines Safety, Dhanbad ( ELECT ) ( HQ ) D IRECTOR OF, MINES SAFZTY ( ELECT ) ( Alternate ) S HRI R AVI K. DU T T Cable and Conductor Manufacturers’ Association of India, New Delhi SHRI S. R. SARAN ( Alternate ) SIIRI P. Grrosu Indian Cable Co Ltd, Jamshedpur SHRI K. V. R. Rao ( Alternate ) SHRI M. M. H~NAVAR Cable Corporation of India Ltd, Bombay SIIRI S. R. PAUMAN~BHAN ( Alternate J \ SI~I D. K. J AIN Directorate of Technical Development & Produc- tion ( Air ), New Delhi SIII~I V. K. Snanaa~ ( Alternate ) SIII<I K. S. Josrrr Bombay Suburban Electric Supply Ltd, Bombay Srirtr R. K. Ssaoa~ ( Alternate ) ( Continued on page 2 ) @ CoPYright 1984 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. K. Kota S HRI A. L. Eranakulam ( Kerala ) S HRI A. Bombay S HRI S. MALHOTRA C Alternate ) D R M. Kota S HRI B. R OY CHOWDHURY The Calcutta Electric Supply Corporation ( India ) Ltd. P.K. V. ETDC 59/P4 Convener SlsRIL. R. PADMANABHAN ( Alternate ) S HRI S. PAI The Federation of Electricity Undertakings of India. Bombay S RRI S.1984 ( Continuedfrom page 1 ) Members Representing SHRI S. PINTO Delhi Electricity Supply Undertaking. M. Jamshedpur S HRI K. SAC~DEV. SA R A N Industrial Cables ( India ) Ltd. B HATTACHARJEE ( Alternale to Shri L. V. SA E H A L K A R Bombay Electric Supply & Transport Under- taking. B H A T I A Senior Deputy Director ( Elec tech ). K. NEO~I ( Alternate ) S HRI P. Satoa SHRI R. MIJNDHRA Oriental Power Cables Ltd. S. R AO (Alternate ) SHRI M. L. AORAWAL ( Altsmafe ) S HRI J. New Delhi S HRI D. SEN Controllerate of Inspection Electronics. Calcutta S RRI R. BALI~A ( Alternate ) SHRI S. R. K. M UNDHRA ( Alternafc) S HRI S. S. SAN~HI Fort Gloster Industries Ltd. C. WARRIER Oriental Power Cables Ltd. IS1 ( Ex-o&id Mumber ) Director ( Elec tech ) Secretary S HRI K. SAEHUJA (Alternate ) S HRI R. Director General. PARWAL The Premier Cable Co Ltd. V. S. Bangalore S HRI S. M. Rajpura 2 . S. New Delhi SHRI V. SUKIIIJA Punjab Research Institute. K. S.IS:!X?l. KA K R A R Universal Cables Ltd. M. K. K. Ahmadabad S HRI B. Rajpura SHRI U. RAI~AERISIXNA ( Alternate ) S HRI K. ME H T A The Ahmedabad Electricity Co Ltd. Bombay SEEIMATI C. KA K K A R Universal Cables Ltd. HO N A V A R Cable Corporation of India Ltd. VERMA National Test House. Howrah SHRI A. V. Sanghi ) SHRI B. AQRAWAL ( Alternate ) S HRI R AJ K. G. NA R A Y A N A N Directorate General of Supplies & Disposals ( Inspection Wing ). M. Calcutta S HRI P. K. New Delhi S HRI S. Howrah Members S HRI A. R. RA~AN Asian Cables Corporation Ltd. BZIATTACHARJEE ( Alternate ) LT-COL S. R. MI T A L Delhi Electric Supply Undertaking. N . IS1 Panel for Elastomeric and Thermoplastic Cables.SANQHI Fort Gloster Industries Ltd. U PASANI ( Alternate ) S HRI L. Satna SHRI R. C. C HANDRA ( Altevuzte ) S HRI H. Bombay S HRI S. R. GHOSR Indian Cable Co Ltd. 0. *Rules for rounding off numerical values ( revised ).5 In preparing this standard. taken out from this standard and are now covered in a separate standard. the final value. 3 . considerable assistance has been derived from IEC Publication 502 ( 1983 ) ‘ Extruded solid dielectric insulated power cables for rated voltages from 1 kV up to 30 kV ‘. 0. issued by the International Electrotechnical Commission ( IBC ) .1 This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 30 April 1984. U. observed or calculated. 0. to which reference has been made at appropriate places. This revision has been undertaken to update it in the li~llt of further experience and developments and to align with international practice. after the draft finalized by the Power Cables Sectional Committee had been approved by the Electro- technical Division Council.6 For the purpose of deciding whether a particular requirement of this standard is complied with.2 This standard was originally published in 1970 with d view to bring under a single cover the various requirements for PVC insulation and sheath of different types of cables. by and large.4 This standard is complementary to the individual specification for different types of cables. 0. Details about methods of test have been. where appropriate. FOREWORD 0. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.3. IS:5831-1984 Indian Standard SPECIFICATION FOR PVC INSULATION AND SHEATH OF ELECTRIC CABLES ( First Revision) 0. expres- sing the result of a test shall be rounded off in accordance with IS : 2-1960*. /U above 3-313. Type C Heat resisting insulation for maximum rated conductor temperature 85°C intended for cables with rated voltages up to and including 1 100 volts. expressed as a percentage of the latter. 2. which have been suitably compounded and pro- cessed to meet the requirements of this standard: a) Polyvinyl chloride ( PVC ).1 This standard specifies the physical and electrical requirements for PVC insulation and sheath of electric cables. TEST REQUIREMENTS 4.1 The insulation and sheath shall satisfy the test requirements stated in Tables 1 and 2 respectively. TERMINOLOGY 2.2 The types of PVC compounds covered by this standard are given below: Type A General purpose insulation for maximum rated conductor temperature 70°C intended for cables with rated voltages U. b) Suitable co-polymers of which the major constituent shall be vinyl chloride. Type B General purpose insulation for maximum rated conductor temperature 7OW intended for cables with rated voltages U.0 For the purpose of this standard.313.3 kV.1 The insulation or sheath shail consist of a compound based on one of the following materials.3 kV. 1.1 Variation ./U up to and including 3. the definitions given in IS : 1885 ( Part 32 )-1971* shall apply.IS : 5831. in addition to the following. 1984 1. c) Mixture of (a) and (b).Difference between the median value obtained after ageing and the median vaIue obtained without ageing. +Electrotechnical vocabulary : Part 32 Cables. conductors and accessories for electric SUPPlY - 4 . SCOPE 1. 2. Type ST1 General purpose sheath intended for use in cables oper- ating at a maximum rated conductor temperature 70°C. 3. Type ST2 Heat resisting sheath intended for use in cables oper- ating at a maximum rated conductor temperature 90°C. COMPOSITION 5. 4. to the extent specified in the relevant cable standard. .2 ) ii) Insulation resistance cons.037 0’37 0.9 1. N/mm* 12’5 12’5 12’5 2) Variation.037 temperature ( se. Max percent f 20 f 25 * 35 v) Loss of mass in air oven 10 [Tempera. ~~~~~h~_~~~~ OB TE S T A B C ~zz?G:.5 12’5 b) Elongation at break. - 1 tllre ( tole- a) Treatment{ rance I. percent 150 135 125 Min iv) After ageing in air oven II f Tempera. IS : 5831 . “C 80 100 135 1 ture (tole- a) Treatment { rance I rt2”C) [Duration days 7 7 7 b) Tensile strength 1) gfiue after ageing.2 ) iii) Without ageing 7 a) Tensile strength. Max percent f 20 f 25 f 25 c) Elongation at break 1) Vr&ue after ageing. 43 tant. OB IS: 10810+ ) (1) (2) (3) (4) (5) (6) (7) i) Volume resistivity.1 ) SL T EST U NIT T YPE OF INSULATION M ETHOD No.7 b) at maximum rated MS&km 0.!:.1984 TABLE 1 TEST REQUIREMENTS FOR PVC INSULATION ( c1uusc 4. Min a) at 27*C ( see Note 1 ) MQkm 36’7 367 36. Min N/mms 12’5 12. Min 43 a) at 27°C ($81 Note 1 ) Ohm-cm 1 x 10’3 1 x 1014 1 x 10’s b) at maximum rated Ohm-cm 1 x 10’0 I x 1011 I x 1010 temperature ( ice 1. - ( conrirmd ) 5 .:I2 days 7 . percent 150 125 125 2) Variation. “C 80 . Contd SL TEST UNIT T YPE OB INEIULATJON METHOD No. “C 150 150 150 ) ture ( tole- a) Treatment { rance I f 2°C) LDuration minutes 15 15 15 b) Shrinkage. Max percent 4 4 4 ix) Cold bend test 20 (for diameter < 12’5 mm) a) Test temperature ( tolc.5 . F-_-h_---~ OF T EST A B C ( R EB TO P ABT No. No signs of cracks or scales ( Continued ) 6 . “C .5 . - Second case hours 6 6 6 Depth of indentation.5 r a n c e f 2% ) b) Visual examination .15 . “C .15 rancc * 2°C ) b) Visual examination No signs of cracks or scales x) C o l d i m p a c t trst ( for d i a . percent 50 50 50 Max vii) Heat shock test 14 r Tempera. OP IS : 108105 ) (1) (2) (3) (4) (5) (6) (7) vi) Hot deformation test 15 Test temperature “C 80 80 95 ( tolerance f 2°C ) Time under load ( MC Note 2 ) First case hours 4 .ISr!ml-1984 TABLE I TEST REQUIREMENTS FOR PVC INSULATION . “C 150 150 150 I ture (tole- a) Treatment{ rance I *2”c) [Duration hour I I 1 b) Visual examination . No signs of cracks or scales viii) Shrinkage test 12 r Tempera. 21 m e t e r > 12.5 .5 IllIn ) a) Test t?mpt’rature ( tole. Norr~ 4 .Undrr preparation. 7 . 14 - b) Water absorbed. fret from traces of colour xiii) Thermal stability ( w Note 4 ) a) Test temperature “C 200 200 200 ( tolerance * 0’5OC ) b) Time. 10 - NOTE 1 . Now 3 . *Cl 85 - I t u r e ( tote- a) Treatment {’ rance’ I l PC 1 1 Duration days .Contd TEST U NIT T YPE OB INSULATION METHOD C__-h--7 OB TEST A B C ( REP TO P ART No. However. t e s t m e t h o d s g i v e n i n Appendix U shall be followed.Time under load: First case. test method given in Appendix A shall be folloued. I n t h e m e a n t i m e . “C 70 70 70 a) Treatment{ rance I f 2OC) (Duration hours 48 48 48 b) Visual examination . N OTE 2 . *Methods of tryst for cables.V o l u m e resis_tivity and insulation resiattnce tests mpy be done at room temperature instead oi 27°C. “C 50 50 50 ( ture ( tole- a) Treatment{ rance I f 2°C) 1 Duration hours 72 72 72 b) Observation no appreciable staining of indicator compound or filter paper xv) Water absorption test 33 ( gravimetric ) f Tempera. Mitt xii) Colour fastness to water ( I~C Note 3 ) C Tempera- 1 ture ( tole.Cab1t.s having a rated voltage not exceeding 3*3/3*3’3 kV and a wnductor cross-section notexceeding 35 mm*. in case of doubt or disputr. Max mg/cms . Min minutes 80 100 100 xiv) Bleeding and blooming test 19 ( Tempera. Second cate-Cables not covered under first case. the test results shall bc confirmed by testing at 27°C. In the meantime.Under p r e p a r a t i o n . Isr5831-1984 TABLE 1 TEST REQUIREMENTS FOR PVC INSULATION . OF IS : 10810* ) (1) (2) (8) (4) (5) (8) (7) xi) Colour fastness to daylight rating 4 4 4 18 exposure. 5 Min 2) Variation. “C 80 100 ture ( tole- a) Treatment . Min N/mm% 12’5 12’5 b) Elongation at break. Max percent z!z 20 f 25 iii) Loss of mass in air oven 10 (Tempera. or IS: 10810* ) (1) (2) (3) (4) (5) (6) i) Without ageing 7 a) Tensile strength. “C 80 100 I ture ( tole- a) Treatment{ rance I f 2°C) (Duration days 7 7 b) Loss of mass. _--h-_--. Max percent f 20 f 25 c) Elongation at break 1) Value after ageing.1s : 5831 . percent 150 150 Min 2) Variation. N/mm* 12. MUX mg/cma 2 2 iv) Hot deformation test 15 a) Test temperature “C 80 30 ( tolerance l 2°C ) b) Time under load ( see Note 1 ) First case hours ti Second case hours : 6 c) Depth of indentation.1 TEST UNIT T YPE OB SH E A T H l%. percent 150 150 Min ii) After ageing in air oven 11 r Tempera.1984 TAELE 2 TEST REQUIREMENTS FOR PVC SHEATH ( Clause 4.5 12. percenl 50 50 Max ( Confinucd ) 8 . hhWHODOB ST1 ST2 ’ TEST (REP PART No.! rance i f 2oc) 1Duration days 7 7 b) Tensile strength 1) Value after ageing. 15 . No rigyc. _-h_l-y T EST f REPTO ‘ST1 ST2 PAR. fSr5831-1984 TABLE 2 TEST REQUIREMENTS FOR PVC SHEATH .Confd SL TEST U NIT TYPEOFSHEATH M ETHOD OF No. “C 150 150 I ture f tole- a) Treatment{ ran& I * 2°C ) 1Duration hour 1 1 b) Visual examination .15 ( tolerance * 2°C’ b) Visual examination No signs of cracks or scales viii) Cold impact test for dia.5 mm a) Test temperature “C . No.5 ( tolerance * 2°C ) b) Visual examination . No signs of cracks or scales ix) Colour fastness to daylight rating 4 4 18 exposure. M UX percent 4 4 vii) Cold bend test for diameter 20 < 12’5 mm 1) Test temperature “C . Duration hours 48 48 b) Visual examination . “C 150 150 1 ture ( tole- a) Treatment{ rance I -f 2 ° C ) LDuration minutes 15 15 b) Shrinkage.racks or vi) Shrinkage test 12 CTempera.5 . “C 70 70 I ture ( tole- a) Treatment{ rance i 2°C ) i. Free from traces of colours ( Confinued ) 9 . Min x) Colour fastness to water ( See Note 2 ) f Tempera. 21 meter > 12. OP I S : 10810* ) (1) (2) (3) (4) (5) (6) v) Heat shock test 14 (Tempera. Second case--6 hours for test piece having an outer diameter exceeding 12’5 mm.1984 TABLE 2 TEST REQUIREMENTS FOR PVC SHEATH . 10 . ~---_*_-~~ T EST ( REP TO ST1 ST2 P ART No.Time under load: First case-4 hours for test piece having an outer diameter not exceeding 12’5 mm. N OTE 3 . “C 50 50 / ture \ ( tole- a) Treatment{ rance I f 2°C) 1 Duration hours 72 72 b) Observations No appreciable staining of indicator compound or filter pap& xiii) Oxygen index .Under preparation.Contd SL TEST U NIT T YPE OF S HEATH M ETHOD OF No. O F IS : l.ISr!5831. In the meantime. NOTE 2 . ( Under consideration ) NOTE 1 . In the meantime.Under preparation. *Methods of test for cables. test method given in Appendix B shall be followed. test method given in Appendix A shall be followed. Min minutes 40 80 xii) Bleeding and blooming 19 [Tempera.)lo* ) (1) (2) (3) (4) (5) xi) Thermal stahility ( See Note 3) a) Test temperature OC 200 200 ( tolerance f 0’5% ) bj Time. b) A strip of dry universal indicating paper as specified in B-1. 11 .3 Thermostatically controlled heating apparatus for the specified temperature. IS: !%831-1984 APPENDIX A [ Tuble 1. It shall be free from any trace of colour.1 Class tubes closed at one end 110 mm long with an outer diameter of approximately 5 mm and an inner diameter of 4. For small thickness the sample may consist of two or more strips. if possible. shall be inserted into the open end ( top ) of the glass tube so that the strip protrudes a b o u t 5 mm out of the tube and can be bent to keep it i n position. The sample shall occupy the bottom of the tube and not project more than 30 mm above the bottom. Item ( xiii ) and Table 2.4 Thermometer calibrated in divisions of O*l”C. Testing M e t h o d a) From the insulation of each core to be tested or from the sheath to be tested. shall be taken in the form of strip. the water shall be examined.2. Item ( x ) ] TEST FOR COLOUR FASTNESS TO WATER A-l.0 f 0. At the end of the period. each of 50 f 5 mg.5 Stop-watch or a suitable time meter. Testing Equipment El. B-1. B-1.2 Universal indicating paper with a PH range of 1 to 10. Each sample shall be inserted into a glass tube as specified in B-1. three samples. about 15 mm long and 3 mm wide. Item ( xii ) and Table 2. B-2.1. A piece about 100 mm long of insulation or sheath is out into small pieces and immersed for the specified period in about 10 times its own volume of distilled water maintained at the specified temperature.5 mm. B-l. Item ( xi) ] THERMAL STABILITY TEST B-l. APPENDIX B [ Table 1. B-l. 12 . as specified in B-1. B-3. 4 The time taken for the universal indicating paper to change colour from a pH value of 5 to a pH value of 3 shall be measured.1 The average value of the thermal stability times of the three samp les shall not be lower than the value specified in Table 1 or Table 2 as applicable. The universal indicating paper shall be renewed ( especially for long duration stabilities ) ‘towards the end of the expected test time every 5 to 10 min. or the test continued for the specified duration without the colour change occurring. into the heating apparatus for a depth of 60 mm.1984 c) The glass tube shall be placed into the heating apparatus. The glass tube shall be inserted. The colour change point shall be consi- dered to have been reached when the red colouring of the universal indicating paper characteristic of a @H value of 3 is just becoming visible. so that the change point is better visible.3. which has already attained the test tempera- ture specified.k3 : 5831 . Evaluation B-3. T. Behind Leela Cinema. Barua Road. Bhadbhada Road. 5th By-lane. T. 621 17 owringhee Approach. NEW DELHI 110002 323 76 17 ‘Eastern : 1114 CIT Scheme VII M. NEW DELHI 110002 Telephones: 323 0131. Chitaranjan Marg. No. L. C-Scheme. Maniktola. KANPUR 208005 21 68 76 Seth Bhawan. AHMEDABAD 380001 550 1348 $ Peenya Industrial Area. Nagar. Sector 34-A. CHANDIGARH 160022 60 38 43 Southern : C. Andheri (East).C.I. 43.T. 271085 lty Chambers. 832 92 95 MUMBAI 400093 Branch Offices: ‘Pushpak’. Behind Marol Telephone Exchange. 23’89 23 .BUREAU OF INDIAN STANDARDS Headqiarters: Manak Bhavan. GUWAHATI 781003 541137 5-8-560. HYDERABAD 500001 201083 E-52. 5th Floor. FARIDABAD 121001 8-28 88 01 Savitri Complex. MUMBAI 400007 309 65 28 222 39 71 Printed at Simco Printing Press.T. 9 Bahadur Shah Zafar Marg. Gupta Marg. Site IV. 62-63. Campus. Sector 16 A. JAIPUR 302001 37 29 25 1171418 8. Naval Kishore Road. 1411421. 839 49 55 BANGALORE 560058 Gangotri Complex. 116 G. Grant Road. PO. Nampally Station Road. R. IV Cross Road.N. Sarvodaya Nagar. CALCUTTA 700054 337 86 62 Northern : SC0 335-336. 9 Bahadur Shah Zafar Marg. Gokulpat Market. Second Floor. GHAZIABAD 201001 8-71 19 96 5315 Ward No:29. BHUBANESHWAR 751001 40 36 27 Kalaikathir Buildings.323 9402 Fax : 91 11 3234062. 2019. Road.LUCKNOW 226001 NIT Building. Khanpur.I. Delhi . 2nd Floor. CHENNAI 600113 235 23 15 TWestern : Manakalaya. Nurmohamed Shaikh Marg. E9. Princep Street. V. Mathura Road.91 11 3239382 Telegrams : Manaksanstha (Common to all Offices) Central Laboratory: Telephone Plot No. BHOPAL 462003 55 40 21 Plot No.91 11 3239399.P. Bangalore-Tumkur Road. NAGPUR 440010 52 5: 71 Patliputra Industrial Estate. Sahibabad 201010 8-77 00 32 Regional Offices: Central : Manak Bhavan. COIMBATORE 641037 21 01 41 Plot No. PATNA 800013 26 23 05 32 36 35 T. 670 Avinashi Road. Road. Ganga Nagar.G. Unit VI. Sahibabad Industrial Area. 323 3375. 1st Stage. Table 1. SZ No. AMENDMENT NO.Substitute '4' for '-'. (vi).Substitute 'cut' I0 fop (Page 11. item(a).Substitute 'tolerance' for 'toterance'. Table I.(v). itm (a)] . [Page 7. I mass. (xv)]: a) .1.(iv). . 1 APRIL 1985 TO IS:5831 -1984 SPECIFICATION FOR PVC INSULATION AND SHEATH OF ELECTRIC CABLES (First Revision) [Page 5. 'line 1) .Substitute 'Glass' for 'Class'. . Delhi. Table 1. co2 (5)] - abstitute '80' for '30°. [Page 8.kTge 11. co1 (611 . Table 2. itm (b).Substitute 'absorbed' for 'absortd'. India . clause A-l. 5'2 No. (ETDC 59) Printed a! Simco Printing Press. LZ No. SZ No. b) . clause B-1. first case. MZX [Page 6.Insert the following after this iten: ‘(1) (2) (3) (4) (5) (6) (7) b) Loss of m&cm2 2 . line 1) . clmse I.Add the following matter between ‘Type C’ and ‘Type ST1 : ‘Type II General purpose insulation for maxiinum rated conduc- t o r temncruture 7 0 ’ C intended Tar flexible c a b l e s wit)1 up to and including R-3/3*3 kV. IS 5831 I 1984 SPEC%CATlON FOR PVC INSULAT ION A ND SHEATH OF ELECTRIC CABLES ( Puge 4.2 ) -. 2 DECEMBER 1995.1’3 sheath intended for use in flexible at maximum rated conductor tem- .’ the I’ollowi~r~ new pata for Type S. AMENDMENT NO. Ai8. Afln N/IIWP I_ I)ur:tlion / b) Visual cxarriitwliofl : 2) Variation. ___ No signs ol cracks ” ‘-b) Visual cxnniinnjiou or scales .__ ..ltiot~ C) Depth of lllde~~lilli()ll. ! ‘/ I able 1 ( C’onriftued ) ‘I’nhle I ( Ch -_ a.. .) 1.tckc 01 scnlcs x) C~~d. ‘_I.-. . Tea. I)ilt. .~llrc + ?"f? ) I I ) Valua ofltr~a~csit~g.) Oh5rt \'. n) Test tcIIlpcrntlIlc ( IOICIilIlCC c * 2°C) . blc. 11fin ’ .~lurc “C I 50 tolerance f 2°C) how J .le~’ Note 2 ) 1) Firal case bows 4 f T’mpernlule 3) 'llc:l~rllclll i ( lotcInIlce + 3"<' 1 2) scconh CnFC IloIlrs i lhr.Ifax ' tl3ys mg/cm* 7 2 a) ‘I rcnlrncnt J( ‘l’elnp I :1111rc Iolcr~lllcc f 7°C. xii) ‘4 .. EO xiv) Illceding nrd tlloorlliIlg ICFI ’ I R) TMtdcnt ( tolcrnnce f’ 2°C ) I’ 1 Ihr:iliori b) L o s s o f ntass.2) Variation. AfIn pcrccnl c . .i~l~c~ test ( for dimueter > 12‘5 111111 ) 0. dfw pcrccnf 7) Losvotninss u i r oven * in b) ‘l’irllc.‘* n) Trcnlmcnl ( tnlcrawe f 2°C ) Ch)3 { Dur:ltion f ~Icwpcrrlfltrr h) Trn*ilc strength 3) l'lr:llllI~rll { ( ~olcl.r 1’ prrccnt I!) Elongalion 1. -.._ Upi1 1 ype of III~ullltlOll RI No. hfo.lk ?tiii) 'l~llCllllill slcibilily I) Vnluc alter nl:uinl~. . . I’ Teniperaturc “C..I itrr1 a) Test tcmpcr:il~~rc “(’ !\(I ._-. 2: ( lolcrluce f 2X’ ) b\ Tinlr nnder land ( . . No signs of’ cracks or b) Visual cxaniinntiorr SCillhJ 2 .llior~ VI) 1lOt dCfOfIlh7tfdl ICSt 1.. .’ 150 15 6 -15 No signs of cr.- ( I ) f!) (3) i v ) A f t e r agcinl in ait oven IclllpcI. . ..r pcrccnt 65 vii) Hear shock test r Terr~pc~.llurc c 0 . Olin Minute 80 xiv) lllccdiug nutl bloon~ing Ic5l ‘l’eilll)L I :Ilurc “CT a) ‘I rcnlincul 1 ( tolcralKc f 2°C’ ) i t.‘clll~ [ I’ugc IO. rol 6. Tit/j/c 2 ) -. ( Pn.-.J ) ’ I~clclc. 9 (I) tl IO. Free from traces of colour xiii) it) 'ICSI lel~lpClilllllC ( ll~1CIilllCC “C 1 * 0'5°C) i b) ‘I’irtle.r nlg.Add t h e fullcl\\ing ‘[‘es! Require_ II\CII~S for tlw IICW f’\‘C C‘OIU~WLIII~ ‘Type ST3 u n d e r column heading ‘1 ypc of SI~CIIIII’ :I\ rol 6 (:I‘ Illis iiI\>le ant1 r e n u m b e r t h e existing ~01 6 3s Cfll 7 : 3 . SI Ivo. ‘I’nhle 1 ( Cortclrded ) Unit Type of lnsulrllon c---h-___.iviuicliic ) I Telllpernluie “C il) ‘ I Icilllncr~l 4 ( tolernnce f -?“C’ 1 1 l~ll~illic~ll di1J. I)ur:iliou hours 11) Oh~ci\alioli -- xv) \\‘.~’ for ‘( See No\c 3 1’.f~es 8 . ( xi ) ] ---.__ (1) (3) (‘.l ( g:l. .I xi) rating 4 xii) “C 70 .tlr~orl~liofi Ic’. Substitute a(.. lirhle 2. /vo/c.Ilcr . ( I’r/ge I O . Irorirs 48 _. Aft~.S b) \V:lter nbsol bed. ll~iillillioll .miin:itinn . Nn signs 01 crilcks or sc:lIc~ biii) Cold iriijxlcl Icql for di:)melcr > I?‘5 111111 y: -5 No signs nf’cr‘lcks nr <c:.pcrnturc c 7 x0 n) ‘I’rcnttiicnt ( (lOll!lilllCC f T"d: ) \ L)lllillillll IhI!!? 7 N/ inni 10‘0 pclctlrt % 20 pclcellt I 50 pxcclll f 20 iii) 0. c X0 tlnys 7 lll~!Iclrl~ 2’0 iv) “t ' 70 hours . IIZS ‘4 . I ‘I cn.I 21 sccollcl c:1rc hours 6 C) lkptli of intlccit.’ "C .I5 ( IOITIilllCC & 2°C ) . Test 1Jlli1 T! pc o hcnth (1) b’ (2) (3) (6) ii) .ilion. Jfnx ’ pcrccii( 65 lle.il ~~.’ ’ II) ‘lest Iclllperu(lilc .\t sllock lcsl ( 'ICIII~CI alille “C IS0 U) 'I ICilllllCl~~ { t lolcrencc $2 2°C ) 1 I~uralinn hour 1 b) Visllal cx.Aflcr nscing in air nvct) 0. S1 No. No signs of cracks or scalcz vi) ‘I \ii) . 1~) \‘i~rl. (. or indic:ltor coiii- pound or filler paper . Type of Sheath (6) 4 ” . 70 IIOIII~ 411 . I.rcc froril trnccs of colours “I’ 700 hlinulec 40 so 72 N o .lyprcciable stain- itip.