IS 1554 : Part 2 : 1988 Specification for PVC Insulated (Heavy Duty) Electric Cables - Part 2 : for Working Voltages from 3"3 kV up to and Including 11 kV

1 Scope

1.1 This standard (Part 2) covers the requirements of Thiscategories of PVC insulated and PVC sheathed power cables forelectricity supply purposes:

a) Types of Cables

1) Single-core unscreened, unarmored (but non-magnetic metallictape covered);

2) Single-core screened, unarmored;

3), Single-core armoured (non-magnetic), screened or unscreened;and

4) Three-core armoured, screened or unscreened.

b) Voltage Grade (Uo/U)

NOTE - The cables conforming to this standard may be operatedcontinuously at a power frequency voltage up to 10 percent higherthan rated voltage.

1.2 The cables covered in this standard are used wherecombination of ambient temperature and temperature rise due to loadresults in conductor temperature not exceeding 70�Cunder normal operation and 160�C undershort-circuit conditions.

1.3 Heavy duty armoured cables specified in this standard aresuitable for use in mines also. However, for such cables,additional requirements have been included, wherever necessary [see3.1.1,16.5, 18.3(d) and 20.2].

2 References

IS 2 :1960Rules for rounding off numerical values

IS 1885 : Part 32 :1971 Electrotechnical vocabulary:Part 32 Cables, conductors and accessories forelectricity supply

IS 3975 :1979Specification for mild steel wires, strips andtapes for armouring of cables

IS 5831 :1984Specification for PVC insulation and sheath ofelectric cables

IS 8130 :1984Specification for conductors for insulatedelectric cables and flexible cords

IS 10418 :1982Specification for drums for electric cables

IS10810Methods of test for cables

IS 4905 :1968Methods for random sampling