标准号:IS 2032 Pt.27-1982
发布日期:1983/5/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard ( Part XXVII ) covers graphical symbols for contacts and components for electromagnetic protection and control relays.Note — Telephone type of relays are not included in the scope of this standard.1.2 The alternative symbols wherever given in this standard, are currently in use and will help in smooth changeover to international symbol ( see 0.4 ).