JUMO 709062 TYA 202 - Three-Phase Power Controller Operating Manual - Manual (Page 20)

2 Installation
18 2012-12-31/00561073 [SCR power switch TYA202]
Installation
height In the case of air cooling, it must be noted that the effectiveness of the cooling
is reduced the higher up the device is installed. As a result, the current carrying
capacity of the SCR power controller decreases with such a cooler as the in-
stallation height increases as shown in the image.
A
Destruction through overheating:
In the event of operation over a long period at maximum load current, the cool-
ing body and its environment heats up.
For this reason, at ambient temperatures above 45 °C, the maximum load cur-
rent must be reduced as shown in the image, as the SCR module could other-
wise be destroyed.
The master or slave device temperature shown on the display may not exceed
100 °C.
If a device temperature exceeds 100 °C, the message "Warning - high temper-
ature" is displayed.
If a device temperature exceeds 105 °C, the load current is gradually reduced
by 10 % of the rated current each time the temperature increases by one de-
gree.
If a device temperature exceeds 115 °C, the power controller current is com-
pletely switched off.
v Chapter 8 "Fault messages and alarms"