wtw DIQ/S 282, Operating Manual, Page: 25 / 186

DIQ/S 28X Installation
25
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Temperature
dependency
(degradation)
of the maximum
allowed
P(continuous)
If the DIQ/S 28X is operated at an ambient temperature below 47 °C (117 °F),
the operator has to make sure that the total power requirement P (continuous)
is not more than 6.5 W.
If the DIQ/S 28X is operated at an ambient temperature above 47 °C (117 °F),
the allowed total power requirement P (continuous) is linearly reduced to 0.7 W
at 55 °C (131 °F).
Fig. 3-1 Degradation line of the line power variant DIQ/S 28X[-XX]
For the short-term total power requirement P (peak), no temperature
dependency has to be taken into account.
Power output [W]
Ambient temperature[°C]
52 54 56 48 50 -30 -20 .................. 0 ............ +46
0
1
2
3
4
5
6
7
Permissible ambient temperature -20 … +55 °C
0,7
6,5