AUTOMATIC MACHINE FOR TESTING CAPACITORS AND NETWORKS 1191 



tors are tested. Sensitrol relay reset switch S16 is cammed shut momen- 

 tarily to reset sensitrol relay K24, after which the sensitrol relay con- 

 tactor closes on its "B" contact, thereby applying power to close and 

 lock test No. 1 "greater than minimum" memory relay K21. 



Switch S13 is cammed open which opens relay K26 and connects the 

 "less than maximum" resistance box R13 into the test circuit. At the 

 same time switch S12 is cammed shut to close relay K27 which discon- 

 nects unit "A" from test and connects unit "B" to the test circuit. 

 Switch S16 is cammed shut momentarily to reset the sensitrol relay con- 

 tactor. If the unit "B" on test is an acceptable product, the sensitrol relay 

 contactor will close on its "A" contacts and applies power to close and 

 lock test No. 2 "less than maximum" memory relay K20 through con- 

 tacts "B" of relay K27. 



Switch S13 is cammed shut to close relay K26 and connect the "greater 

 than minimum" resistance box R14 into the test circuit. Switch S16 is 

 cammed shut momentarily to reset the sensitrol relay K24 after which 

 its contactor closes on the "B" contact for acceptable product. Mem- 

 ory circuit timing switch S15 is cammed shut and power from one side 

 of the 110 volt ac line flows through the acceptance solenoid, contacts 

 "A" on relay K19, contacts "A" on relay K20, the closed contacts on 

 relay K18 to the other side of the 110-volt ac line to close K25 and to 

 accept the dual unit capacitor under test. The failure of either relay K19 

 or K20 to operate because of defective product tested opens the ac- 

 ceptance solenoid circuit and rejects the capacitor tested. 



B. Impedance Test on Single Unit Capacitors 



The impedance test on a single unit capacitor is identical with the 

 testing of dual unit capacitors, except test No. 2 cutout relay K22 is 

 preset closed and test No. 2 "less than maximum" memory relay K20 

 is not operated since only a single unit is tested. 



C. Impedance Test on Dual Unit Networks 



The impedance test on dual unit networks is identical with the test 

 for dual unit capacitors, except the "greater than minimum" test cut- 

 out relay K18 is not preset closed and the resistance boxes R13 and R14 

 are set to represent maximum and minimum limits. 



D. Impedance Test on Single Unit Networks 



The impedance test on single unit networks is identical with the test 

 of dual unit networks except test No. 2 cutout relay K22 is preset closed 

 for the same reason given above for the test of single unit capacitors. 



