ARCING OF CONTACTS IN TELEPHONE SWITCHING SYSTEMS 1501 



103 



10^ 



CONTACT SEPARATION IN ANGSTROMS 



Fig. 5 — Arc initiation voltages for "Activated" palladium contacts. 



10,000 

 8000 

 6000 



4000 



800 



< 400 



o 



a. 200 



< 



100 

 80 

 60 



103 



2 ^ 6 « ,0^ ^ ^ ' " 10S 



CONTACT SEPARATION IN ANGSTROMS 



Fig. 6 — Summary of results of arc initiation voltages. 



106 



