Heat cycle test

Heat cycle tests establish the long term electrical properties of all current carrying fittings and clamps. Their purpose is to ensure that fittings do not deteriorate after long-term usage. They provide insights on the behaviour of the used wire or cable.

The heat cycle test can be carried out on class A Fittings, conductors and overhead catenary systems. The IEC 61284 standard is commonly used for class A fittings. Customer specific requirements are possible as well.

  • Lamifil has an indoor test environment consisting of an DC generator to generate heat by adding currents up to 4000A.
  • Our lab’s extensive expertise allows us to advise on the fittings to be used.
  • Heat cycle tests are fully accredited and have been performed by Lamifil for over 5 years for various customers.
  • A realistic simulation is made of a fitting/conductor combination using various types of fittings such as dead ends and splices;
  • Current up to 4000A can be applied to the combination;
  • With or without mechanical tension;
  • Typically, 500 cycles are performed. After each cycle temperature of both conductor and fitting and the resistance of the fitting are measured;
  • These results are then cross-checked with the different applicable limitations;
  • A full report is prepared including test object data, test description, set-up, procedure results and conclusions.