IS 694-1977

标准号：IS 694-1977
发布日期：1978/1/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard covers the requirements and tests for the following types of unarmoured PVC insulated cablcs with copper or aluminium conductors and flexible cords with copper conductors for electric power and lighting (including weatherproof cables) for voltages up to and including 1 100 V.Note — For use as weatherproof cables, the cables shall meet the requirements of optional additional ageing test [see 11.4(c)].1.1.1 Types of Cablesa) Cables for fixed wiring:1) Single core (unsheathed);2) Single core (sheathed);3) Circular twin, three and four core (sheathed);4) Flat twin with or without ECC (sheathed); and5) Flat three core (sheathed).b) Flexible cords:1) Single core (unsheathed);2) Single core (sheathed);3) Parallel twin (unsheathed);4) Twisted twin (unsheathed);5) Circular twin, three and four core (sheathed); and6) Flat twin (sheathed).1.2 The cables covered in this standard are suitable for use on ac single phase or three phase (earthed or unearthed) system for rated voltages up to and including 1 100 V. These cables may be used on dc systems for rated voltages up to and including 1 500 V.1.3 The cables covered in this standard are suitable for use where the combination of ambient temperature and temperature rise due to load results in a continuous conductor temperature not exceeding 70°C.