ABOUT

PURPOSE:

1. To evaluate contact resistance characteristics of the contact systems under conditions where applied voltages and currents do not alter the physical contact interface and will detect oxides and films which degrade electrical stability.
   
2. The test method is also sensitive to and may detect the presence of fretting corrosion induced by mechanical or thermal environments and any significant loss of contact pressure.
   
3. This attribute was monitored after each preconditioning and/or test exposure in order to determine said stability of the connector material systems as they progress through the applicable test sequences.
   
4. The electrical stability of the system is determined by comparing the resistance value after a given test exposure to its initial value (prior to any exposure). The difference is the change in resistance occurring whose magnitude establishes the stability of the interface being evaluated.
   

Automatic LLCR Test Setup

LLCR Test Setup

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