More B As a consequence, the conductor surfaces are placed under compression by the crimp terminal and areas of contact are established between the conductor and the crimp barrel. These areas provide the desired electrical connection. A reliable crimped connection is one that is capable of maintaining the contact between the conductor and crimp barrel so that a stable electrical connection is maintained when it is exposed to the conditions it was designed to endure during its useful life. After the evaluation is completed, if any change in the system parts is made, the system should be reevaluated using the same procedures. An example of such an acceptance requirement is shown in Appendix X1.
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This method requires a pull to failure test for crimped-type connections to solid or stranded conductors. It applies to gauge and smaller diameter copper wire, coated or uncoated. Prepare a lot of test specimens of the crimp terminal crimped to a short length of wire. For Method A, prepare 64 specimens, for Method B, prepare 94 specimens. For both methods the wire should be pulled from a group of the specimens in a tensile pull and the force compared to set requirements based on wire diameter.
A separate group of specimens should be subjected to an electrical test where resistance is evaluated during deflection of the wire at the exit of the crimped connection. Your electrical test results can be compared to a standard value based on wire diameter. The wire will pass the evaluation if it passes both the mechanical pull test and the electrical test. In Method B, additional pull tests are performed on subgroups of parts during and after the aging test to provide information on progressive degradation in performance.
A universal testing machine can be used to test for B By means of our testing expertise and modular product design, we will help find the testing solution that is right for you.
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ASTM B913 Testing Crimped Wire Connections