GB/T 4728 “Graphical symbols for diagrams” can be divided into 13 parts:
——Part 1: General requirements;——Part 2: Symbols element, limitation symbol and other conventional signs;
——Part 3: Conductor and connecting piece;
——Part 4: Basic passive component;——Part 5: semiconductor and electronic tube;
——Part 6: Production and conversion of the electrical energy;
——Part 7: Switch, control and protect element;
——Part 8: Measuring Instruments, Lamps and Signaling Devices;
——Part 9: Telecommunications: Switching and Peripheral Equipment;
——Part 10: Telecommunications: Transmission;
——Part 11: Architectural and topographical installation plans and diagrams;
——Part 12: Binary logic element;
——Part 13: Analogue elements.
This section is part 7 of GB/T 4728 and identical to the "Graphical symbols for diagrams" (IEC 60617) (IEC 60617 _Snapshot_ 2007-08-03 English edition).
This standard replaces Graphical Symbols for Diagrams-Part 7: Graphical symbols for diagrams-Part 7: Switchgear, controlgear and protective devices. Compared with GB /T 4728.7—2000, alterations are as follows:
——New symbols S01413, S01454 and S0462 are added;
——26 symbols are abolished: S00224 (07-0l-07), S00225 (07-0l-08), S00228 (07-02-02), S00249 (07-06-01), S00250 (07-06-02), S0025l (07-06-03), S0252 (07-06-04), 500267 (07-11-01), S00268 (07-11-02), S00269 (07-11-03), S00273 (07-11-07), S00274 (07-11-08), S00275 (07-11-09), S00276 (07-11-10), S00277 (07-06-02), S00278 (07-ll-12), S00279 (07-11-13), S0028 (07-12-01), S00281 (07-12-02), S00282 (07-12-03), S00283 (07-13-01), S00306 (07-15-02), S00308 (07-15-04), S00309 (07-15-05), S00310 (07-15-06), S00322 (07-15-18);
According to IEC 60617 database standard, more information is listed for each symbol compared with the old edition.
"Replacing symbol" of this standard is the symbol replacing the present symbol, which is abolished. "Replacing symbol" of this standard is the symbol replacing the present symbol, which is abolished.
