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Low Temperature Testing

COLD IMPACT

SCOPE

To evaluate physical and mechanical properties of Lapp cable to insure that these products retain critical low temperature qualification values of impact resistance when subjected to a free-fall force. These tests are performed to verify compliance with Lapp Mechanical Resistance Cable Attributes, Industry Tests and Safety Agency Standards.

 

TECHNICAL DETAIL

Several finished cable samples are cut to specified length and then are straightened to detect any bends or curves. Specimens are then placed within the cold storage unit a defined low temperature for a specific period of time. Simultaneously, the support anvil of the impact tester is required to be exposed to the same low temperature conditions and duration of time. Upon completion of the low temperature aging, samples are individually removed and placed on the support anvil. The specimens are then subjected to impact by a free falling weight from the required height. The test is completed once all the aged samples have been impacted and allowed to relax in ambient environment for a specific period of time. Samples are then visually inspected for any occurrence of damage on both the jacket and insulation. Test results are also compared to standard requirements electronically to avoid potential error and insure accuracy.

 

INDUSTRY REGULATORY STANDARDS

 

LAPP STANDARD

COLD BEND

SCOPE

To evaluate physical and mechanical properties of Lapp wire and cable and ensure that these products retain critical low temperature qualification values of flexibility when subjected to bending. These tests are performed to verify compliance with Lapp Mechanical Resistance Cable Attributes, Industry Tests, and Safety Agency Standards.

 

TECHNICAL DETAIL

Several wire or cable samples are cut to a specified length and then are straightened to check for bends or curves. Specimens are then placed within the mechanical cold chamber at a defined low temperature for a specific period of time. Simultaneously, the mandrel of the appropriate size is required to be exposed to the same low temperature conditions and duration of time. Upon completion of low temperature aging, samples are individually removed and bent around the circumference of the mandrel for a specific number of windings. The test is completed once all the aged samples have been bent around the mandrel and are then allowed to relax under ambient environment for a specific time interval. Samples are then visually inspected for any occurrence of damage on both the jacket and insulation. Test results are compared to standard requirements electronically to avoid potential error and insure accuracy.

 

INDUSTRY REGULATORY STANDARDS

 

LAPP STANDARDS

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