AMENDMENT NO. 2 APRIL 2022 TO IS 7098 (PART 2) : 2011 CROSSLINKED POLYETHYLENE INSULATED THERMOPLASTIC SHEATHED CABLES - SPECIFICATION PART 2 FOR WORKING VOLTAGES FROM 3.3 kV UPTO AND INCLUDING 33 kV (Second Revision ) [Page 1, clause 1.1(b)(2)] - Substitute ‘Unearthed systems : 3.3/3.3 kV, 11/11 kV and 33/33 kV' for °Unearthed system: 3.3/3.3 kV and 11/11 kV'. (Page l, clause 2) - Insert the following text at the end of the clause: IS No. Title 13360 (Part 6/Sec 9) Determination of density of smoke from the burning or decomposition of plastics (Page 2, clause 3.2, Note) - Substitute the following for the existing Note: NOTES: 1 These tests are of such a nature that after they have been made, they need not be repeated unless changes are made in the cable materials or design which might change the performance characteristics. 2 When type tests have been successfully performed on a type of cable covered by this standard with a specific conductor cross sectional area and rated voltage, type approval shall be accepted as valid for cables of same type with other conductor cross-sectional areas and/or rated voltage provided the following three conditions are all satisfied: a) The same material, that is, insulation and semi-conducting screens, and manufacturing process are used. Price Group 3 1 b) The conductor cross-sectional area is not higher than that of the tested cable, with the exception that all cross- sectional areas up to and including 630 mm? are approved when the cross-sectional area of previously tested cable is in the range of 95 mm? to 630 mm². c) The rated voltage is not higher than that of the tested cable. Approval shall be independent of the conductor material.' (Page 4, Table 4, col 9) - Insert the following new column (10) 33/33kV mm (10) 9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 (Page 5, clause 14.1) Substitute ‘3.8/6.6, 6.35/11, 11/11, 12.7/22 ,19/33 kV and 33/33 kV' for ‘3.8/6.6, 6.35/11,11/11, 12.7/22 and 19/33 kV'. (Page 6, clause 17.5) - Insert the following new clause after 17.5: °17.6 The round steel wires/formed steel wires taken from the cable shall meet the following requirements. 2 17.6.1 The tensile strength of round steel wire/formed steel wire shall be not less than 250 N/mm² and not more 580 N/mm? 17.6.2 The elongation at break of round steel wire/formed steel wire shall be not less than 6 percent. 17.6.3 Round steel wire shall meet the requirements of torsion test. The gauge length between vices and the minimum number of turns without break shall be as per Table 6 of IS 3975. 17.6.4 The zinc coating shall not show any cracks and shall not flake off on rubbing by the bare finger when the formed steel wire is subjected to winding test. 17.6.5 The uniformity of zinc coating of round steel wire/formed steel wire shall comply with the requirements of IS 3975 subject to the following: a) The minimum number of dips shall be reduced by one half-minute dip and b) In case of formed wires, dip test is applicable only for the face. 17.6.6 The mass of zinc coating of round steel wire shall not be less than 95 percent of the mass specified in Table 2 of IS 4826. The mass of zinc coating of formed steel wire shall not be less than 95 percent of the mass specified in IS 3975. 17.6.7 The resistivity of the round steel wire/formed steel wire shall meet the requirements of IS 3975. [Page 6, Table 7, Sl No.(ii), col 5] - Substitute ‘1.40' for 1.4′. , f., s[1()19] .0'E, of.00', amsn[s 10(x)oN s aip'9 aand] [Page 6, Table 7, Sl No.(i), col 6] - Substitute ‘1.40' for °1.4'. , f., [91()1 9] [Page 6, Table 7, Sl No.(xi), col 6] - Substitute ‘3.00' for 3.0'. 3 [Page 7, Table, Sl No.(i)] - Substitute the following for the existing: IS Test For Requirements, Method of Test, No. Ref to Ref to IS 10810 (1) (2) (3) (4) i) Test on conductor: a) Annealing test (for copper) IS 8130 1 b) Tensile test (for aluminium) (not applicable IS 8130 2 for compacted or shaped conductor) IS 8130 3 c) Wrapping test (for aluminium) IS 81