YD/T 693-1993
Technical requirement of fundamental power supply units for SPC exchange (English Version)
- Standard No.
- YD/T 693-1993
- Language
- Chinese, Available in English version
- Release Date
- 1993
- Published By
- Professional Standard - Post and Telecommunication
- Status
- 2009-12
- Latest
- YD/T 693-1993
- Scope
- This standard mainly sets out requirements for the DC basic power supply system used in program-controlled switches, including commutation and distribution equipment, allowable voltage variation range, full discharge circuit voltage drop, noise voltage, wire wiring principles and other major technical issues. This standard applies to program-controlled switch power supplies for public communication networks. Program-controlled switch power supplies for private communication networks should also be used with reference.
YD/T 693-1993 history
- 1993 YD/T 693-1993 Technical requirement of fundamental power supply units for SPC exchange
