Experimental and Statistical Study of Connector Resistance Factor Influence on Crimping Validation Process

In the process of introducing new connection types in electrical machines manufacturing process, it is necessary to validate the entire execution process according to relevant standards. It is largely agreed that during crimping process different causes can lead to failures which can affect the entire validation process. In this paper it is studied the influence of an improper crimped connection execution on crimping validation process starting from experimental determination of connector resistance and continuing with statistical parameters. There are considered 12 samples having the same value of initial scatter: six samples of through connector and six of barrel of terminal lug. After measuring the connector resistance, the factor k is calculated and finally the initial scatter δ is determined and compared with the value imposed by the standards. The maximum value of connector resistance factor for each group was varied until the initial scatter δ was superior to the maximum limit. After noted the procentage of variation and analyzing the results it was observed that one type of connection is more sensitive at faults than the other. As a result, the entire validation process for this connection type can be compromissed. Finally, conclusions and recommendations are made.