GB/T 4728.9-2022
Graphical symbols for electrical diagrams—Part 9： Telecommunications :Switching and peripheral equipment (English Version)

Standard No.

GB/T 4728.9-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 4728.9-2022

Replace

GB/T 4728.9-2008

Scope

The concept of graphic symbols is usually understood as "using intuitive graphics to convey information without using language." Graphical symbols for electrical diagrams are an international common engineering language necessary for drawing electrical diagrams, and play an important role in international technical exchanges in the electrical field. GB/T4728 is designed to stipulate electrical equipment in various fields such as machinery, electric power, construction, metallurgy, coal, petroleum, railways, transportation, electronics, chemicals, textiles, radio and television, weapons, ships, post and telecommunications, aviation, aerospace, information, national defense technology and other fields. Design symbols are divided into 13 parts: 　——Part 1: General requirements; 　——Part 2: Symbol elements, qualifying symbols and other commonly used symbols; 　——Part 3: Conductors and connectors; 　————Part 4: Basic passive components; 　——Part 5: Semiconductor tubes and electron tubes; 　——Part 6: Generation and conversion of electrical energy; 　——Part 7: Switching, control and protection devices; 　——Part 8: Measuring instruments, lamps and signaling devices; 　——Part 9: Telecommunications: switching and peripheral equipment; 　——Part 10: Telecommunications: transmission; 　——Part 11: Building installation planes Layout drawings; 　——Part 12: Binary logic components; 　——Part 13: Analog components.

GB/T 4728.9-2022 history

• 2022 GB/T 4728.9-2022 Graphical symbols for electrical diagrams—Part 9： Telecommunications :Switching and peripheral equipment
• 2008 GB/T 4728.9-2008 Graphical symbols for electrical diagrams - Part 9: Telecommunications switching and peripheral equipment
• 1999 GB/T 4728.9-1999 Graphical symbols for diagrams. Part 9: Telecommunications: Switching and peripherel equipment

GB/T 4728.9-2022 -All Parts