Dissipation in free air
of electrical or electronical cabinets.

It calculates the maximum dissipation in free air of electrical cabinets containing electrical or electronic equipments.
Difference between the dissipated power and that to dispel naturally will be the thermical potentiality of the conditioner or the cooling system additional to install.

Data input

Cabinet material

Painted sheet metal Plastic Light Anodized Aluminium

Heat dissipation coefficient

k

Width . . . W

mm

Height . . . H

mm

Depth . . . D

mm

Maximum ambient temperature

°C

Maximum internal temperature

°C

Other characteristics (optional)

Real power to dissipate

W

Notes.
Thermical power to dissipate is the summary of all the dissipation of the components into the cabinet, for example :

• Contactors, dissipated power during the functioning related to the contemporaneity.
• Transformers, difference between the output power and the consumed power.
• Electronic equipments, dissipated power in relation with load and contemporaneity.
• Resistors, dissipated power in relation with current and contemporaneity.