JUMO 709051, Operating Manual, Page: 22 / 92

2 Mounting
22 V1.00/EN/00741192/2021-03-30 [IPC 300]
2.3.1 Admissible load current depending on the site altitude
Site altitude In the case of air cooling, it must be noted that the effectiveness of the cooling
is reduced as the site altitude increases. As a result, the ampacity of the
IPC 300 decreases as the site altitude increases, as shown in the diagram.
1000 2000
40
20
100
site altitude in m
above sea level
80
Ampacity in %
91,4%
60
3000 4000 5000
Reduction over 1000m above sea level: 0,86 %/100m
A
Destruction through overheating:
In the event of operation at maximum load current over an extended period,
the heat sink and its surroundings heat up.
The device temperature must not exceed 100 °C.
At a device temperature of >100 °C, the message "Warning - high tempera-
ture" is displayed.
At a device temperature of >105 °C, the output level is gradually reduced by
10 % each time the temperature increases by one degree.
At a device temperature of >115 °C, the power controller is completely
switched off.
v
Chapter 8 "Error messages and alarms"