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By Mike  O’Dell 10/16/2011 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Burned Contacts Severity of Failure ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Burned Coils Severity of Failure ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Open Coils Severity of Failure ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Stripped Screws – Customer Connections Severity of Failure ,[object Object],[object Object]
Approximate material cost breakdown of typical contactor device
[object Object],[object Object],[object Object],[object Object],[object Object],Silver Contacts
[object Object],[object Object],[object Object],[object Object],[object Object],Coils
[object Object],[object Object],[object Object],High Cost Components and Processes in Contactors and Relays
[object Object],[object Object],High Cost Components and Processes in Contactors and Relays
[object Object],[object Object],Plastic
[object Object],Springs Contact Carriers Labor cost to assemble
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
L1 L2 T1 T2 LINE LOAD CONTROL CIRCUIT
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ARMATURE MAGNET A SMALL GAP IS LEFT TO BREAK THE MAGNETIC FIELD AND ALLOW ARMATURE TO DROP AWAY FREELY AFTER COIL IS DE-ENERGIZED SHADING COIL
 
 
 
 
 
 
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Magnet Wire
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AC arc suppression ,[object Object],[object Object],[object Object],[object Object],[object Object]
DC arc suppression ,[object Object],[object Object],[object Object],[object Object],[object Object]

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Field Failures & Customer Complaints Cost and Improvement Agencies and Standards for Magnetic Circuit Coil Design and Issues

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  • 7. Approximate material cost breakdown of typical contactor device
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  • 15. L1 L2 T1 T2 LINE LOAD CONTROL CIRCUIT
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  • 19. ARMATURE MAGNET A SMALL GAP IS LEFT TO BREAK THE MAGNETIC FIELD AND ALLOW ARMATURE TO DROP AWAY FREELY AFTER COIL IS DE-ENERGIZED SHADING COIL
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