Fagor DDS Series, Hardware Manual

Page: 288 / 406

   Installation
8.
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DDS
HARDWARE
Heat dissipation
The external Ballast resistors can generate a great deal of heat. That's why,
sometimes, depending on the temperature of the installation area, it may be
necessary to evacuate the heat by means of fans.
See an example with data on the temperatures reached in points of the top
of the module and the effect of the fan:
INFORMATION. If a fan is required due the conditions of the location where
the resistor will be installed, remember that FAGOR offers external ballast
resistors with fan.
i
T. H8/3 Temperatures reached in the points defined earlier in the figure F.
H8/21 . *Temperature variation due to the effect of the fan (PAPST
614). Temperature in °C (conversion: °F=32+1.8 °C).
Dissipated power (W) 734 896 1042 1400 1400
*
Ambient temperature (°C) 25 22 24 24 24
T1 (°C) 90 89 115 138 74
T2 (°C) 157 170 185 217 113
T3 (°C) 80 79 88 104 64
T4 (°C) 60 68 72 82 46
T5 (°C) 50 54 57 65 47
T6 (°C) 40 40 44 45 44
F. H8/21
Location of the temperature measuring points.
5 6
3 4
2
1
65 cm
30 cm
10 cm
25.6"
11.8"
3.93"