Admissible Load Current Depending On The Site Altitude - JUMO IPC 300 Operating Manual

2 Mounting

2.3.1 Admissible load current depending on the site altitude

Site altitude
A
22
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.
Ampacity in %
100
80
60
Reduction over 1000m above sea level: 0,86 %/100m
40
20
1000
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"
91,4%
2000 3000 4000
V1.00/EN/00741192/2021-03-30 [IPC 300]
site altitude in m
5000
above sea level