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Chinese National Standard Category: Basic standards and general methods

English Title: Graphic symbols used in circuit operation procedure diagram for electromechanical components of telephone exchanges
Chinese Title: 电话交换机机电件电路动作程序图图形符号
Standard No.: YD/T 540-1992
Category No.: M04
Issued by:
Issued on:
Implemented on:
Status: abolished
Superseded by:
Superseded on:
Abolished on:2009-12-01
Superseding:GB 2095-1980 Electromechanical components for telephone switching system--Graphical symbols for operation sequence diagram
Word Count:1500 words
Similar Standards: YD 5084-1999   YD/T 540-1992   T/CCSA 240-2019   GB/T 38121-2023   GB/T 19663-2022   GB/T 41089-2021   GB/T 40621-2021   GB/T 38121-2019   GB/T 37048-2018   GB/T 36963-2018   GB/T 37047-2018   GB/T 21431-2015/XG1-2018   YD/T 2583.1-2018   GB/T 13504-2008/XG1-2016   GB/T 21431-2015   YDB 161-2015   QX 4-2015   GB/T 15658-2012   YDB 123-2013   GB/T 28507-2012  
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