ABB 500 Series Builder's Manual page 114


108
Requirements
2)
Also applicable to equipment frames mounted close to each other if every alternate
equipment frame has a low continuous power loss (approximately 5 W). It is desirable
to mount the equipment frames in the cubicles with maximum possible space between
them, to ensure the best possible heat dissipation.
3)
The heater should be disconnected by a thermostat set for maximum 45°C.
4) Also applicable to locations where the cubicle is located back-to-back or close to a
wall (with a distance of approximately 50 mm between the back of the cubicle and the
wall).
5)
Self-ventilated design according to
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1
2
3
4
5
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Where:
1 is raised roof. The roof plate is raised 20 mm to provide an outlet for heated air.
2 is trim plate with vents that provides an outlet for heated air.
3 is protective door with vents, when required.
4 are door vents.
5 is kick plate with vents that provides cool air for the rear mounting plane.
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figure 52.
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