IEEE Guide for Power System Protective Relay Applications of Audio Tones Over Voice Grade Channels
NORM herausgegeben am 23.8.2004
Designation standards: IEEE C37.93-2004
Note: UNGÜLTIG
Publication date standards: 23.8.2004
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Kategorie: Technische Normen IEEE