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  • sb10067122as-001

    Advanced tunnel modeling module

    The advanced tunnel modeling module (CYMCAP/ATM) offers extended capabilities, allowing the calculation of the ampacity and temperature of multiple cables in tunnels.
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Perform critical analyses for an improved understanding of cables in tunnels

This module allows you to determine steady-state temperature and ampacity, cyclic loading, emergency rating and transient analysis for cables installed in unventilated tunnels, as well as steady-state temperature and ampacity analysis for cables installed in ventilated tunnels.

Unventilated tunnels highlighted features:

  • Modeling of a large variety of installation methods: laying on the floor; hanging from a wall; in ladder-type racks or in cable trays
  • Cables and groups of cables can be single-core or three-core; single-core cables can be arranged in flat formations (vertically or horizontally) or in trefoil
  • Cyclic loading using daily, weekly and yearly load factors and computation of emergency ratings in unventilated tunnel configurations

Ventilated tunnels highlighted features:

  • Model an unlimited number of non-identical (unequally loaded) unbalanced circuits for single-core cables in either flat (horizontal or vertical) and trefoil configurations
  • Consider the heat transfer produced by radiation and convection between the cables and the tunnel wall, as well as the conduction between the tunnel wall and soil
  • Graphically represent the temperature profiles for each cable, the air and the tunnel wall as a function of their positions along the ventilated tunnel
  • Consider the effects of the tunnel wall and wind velocity in calculations
  • Obtain a graphical representation of the heat removed by the tunnel
  • Circular and rectangular tunnel shapes

Ready to learn more about this module?

Download brochure
cables in tunnels
Unventilated tunnel with circuits in trefoil
Ventilated tunnels
Multiple circuits in various configurations installed in a rectangular ventilated tunnel
Ventilated tunnels features
Multiple circuits in various configurations in a circular ventilated tunnel

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Do you have questions about this module?

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