NEW GENERAL PURPOSE RELAY 



1055 



DAMPERS 



Fig. 24 — Where very Ions life is needed, polyisol)Utyleiie dampers are mounted 

 between the twin wires and a molded shelf on the stationary wire assembly. 



noted that, for one billion operations, the total slide corresponds to a 

 distance of about thirty-two miles. 



Stability 



The AF relay is a distinct improvement in stability compared with 

 earlier designs when subjected to shock or temperature and humidity 

 changes. Under severe and repeated variations in temperature and hu- 

 midity, the largest changes in contact separation are not more than 0.002 



0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1C 



TIME AFTER RELAY OPERATES IN SECONDS 



Fig. 25 — Oscillograms showing the effectiveness of the polyisobutylene dampers 

 in reducing the vibration of twin wires following operation of the relay. The 

 vibration is measured in the horizontal plane, about midway along the length 

 of the wires. 



