IS 1441-1989

标准号：IS 1441-1989
发布日期：1990/7/1 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 insulator stalks intended for use on telegraph and telephone lines:a) Stalk, telegraph ( see Fig. 1 ):b) Stalk, telephone ( see Fig. 1 );c) Stalk, swan neck, long ( see Fig. 2 );d) Stalk, swan neck, short ( see Fig. 3 );e) 'J'-Stalk ( see Fig. 4 );f) Bracket attachment terminal, single (see Fig. 5 ); andg) Bracket attachment terminal, double (see Fig. 6 ).1.2 The requirements of porcelain insulators for telegraph and telephone lines are covered in IS 283 : 1976 'Specification for porcelain insulators for telegraph and telephone lines ( third revision )'.