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Flex Testing

TORSION TEST

SCOPE

To evaluate twist motion properties of Lapp cable to insure that these products retain critical operating performance characteristics when subjected to severe torsion cycle conditions. These tests are performed to verify compliance with Lapp Motion Cable Attributes, Industry tests and Safety agency standards.

 

TECHNICAL DETAIL

Several cable samples are cut to a specified length, allowed to relax and then are straightened if any bends or curves are apparent. Specimens are stripped at both ends exposing the conductor and connected in series. A current source is connected to the exposed series conductors. Audible and visual devices are used to identify any short circuit condition that occurs while under torsion. Physical adjustments and connections are made for the test samples which regulates the astringent degree of twist. Completion of the test is determined by reaching the required number of torsion cycles or if either visual or audible failure is observed. Test results are compared to standard requirements electronically to avoid potential error and insure accuracy.

 

LAPP STANDARDS

CONTINUOUS FLEX

SCOPE

To evaluate continuous motion properties of Lapp cable to insure that these products retain critical operating performance characteristics when subjected to severe flexing cycle conditions experienced in power chain applications. These tests are performed to verify compliance with Lapp Motion Cable Attributes, Industry tests and Safety agency standards.

 

TECHNICAL DETAIL

Several cable samples are cut to a specified length, allowed to relax and then are straightened if any bends or curves are apparent. Specimens are stripped at both ends exposing the conductor and connected in series. A current source is connected to the exposed series conductors. Audible and visual devices are used to identify any short circuit condition that occurs while under continuous flexing. Physical adjustments and connections are made for the test samples which regulates bend radius severity. Completion of the test is determined by reaching the required number of flex cycles or if either visual or audible failure is observed. Test results are compared to standard requirements electronically to avoid potential error and insure accuracy.

 

LAPP RATINGS

  • CF-01 Continuous Moderate Flexing
  • CF-02 Continuous High Flexing (up to 30 ft. chain length)
  • CF-03 Continuous High Flexing (up to 300 ft. chain length)

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