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Article | REF: D5165 V1

Low-voltage busbars

Author: Roland AUBER

Publication date: February 10, 1998

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3. Factors affecting ampacity

The actual thermal equilibrium conditions depend on the way heat is released, as well as on the reciprocal influence of the bars on each other. They are therefore different from those considered in paragraph 2.1 .

Heat is dissipated by conduction, convection and radiation.

  • Conduction takes place only at the ends of the bars, more particularly at the switchgear connections. In reality,...

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