
B-63943EN/02 3.INSTALLATION
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3.4.3 Thermal Design of Operator's Panel
With a small cabinet like the operator's panel, the heat dissipating
capacity of the cabinet is as shown below, assuming that there is
sufficient mixing of the air inside the cabinet.
Coated metal surfaces: 8 W/m
2
°C
Plastic surfaces: 3.7 W/m
2
°C
An example of the thermal design for the cabinet shown in Fig. 3.4.3
is shown below.
Fig. 3.4.3
Assume the following.
Thermal exchange rates
Coated metal surfaces : 8 W/m
2
⋅°C
Plastic surfaces : 3.7 W/m
2
⋅°C
Allowable temperature rise : 13°C higher than the exterior
temperature
Also, assume the following.
Dimensions of pendant type cabinet shown in Fig. 3.4.3:
560(W) × 470(H) × 150(D) mm
Surface area of metallic sections : 0.5722 m
2
Surface area of plastic sections : 0.2632 m
2