Protective or Circuit Breaking Device. 



Table II (for Fig. 7). 



279 





Heating current 



Time in sec 





in 



one arm in 



for 7 div. 



idings 



m 



illiamperes 



deflection 



1 





62-0 



13-4 



2 





68-0 



8'6 



3 





70-7 



8-2 



4 





77-0 



6-1 



5 





86-1 



4-6 



6 





92-4 



4-0 



7 





100-0 



3-3 



8 





110-0 



3-0 



9 





121-2 



2-4 



10 





130-0 



2-1 



11 





145-0 



1-8 



3 

 n 



60 



a 



Fig. 7. 



































140 





























120 



100 



80 



60 





























































20 

















n 

















4 6 8 10 



Time in seconds to deflect 7 divisions. 



12 



16 



