ABB ACH580-01 - Page 244

0.90
k
0.80
0.75
0.85
0.95
T
+40 °C
+104 °F
+50 °C
+122 °F
…
+45 °C
+113 °F
1.00
-15 °C
+5 °F
0.85
-260A-4, -293A-4; -273A-2, -276A-2: In the temperature range +40…45 °C
(+104…113 °F), the rated output current is derated by 1% for every added 1 °C (1.8 °F).
In the temperature range +45…50 °C (+113…122 °F), the rated output current is derated
by 2.5% for every added 1 °C (1.8 °F). The output current can be calculated by multiplying
the current given in the rating table by the derating factor (k):
0.90
k
0.80
0.75
0.85
0.95
T
+40 °C
+104 °F
+50 °C
+122 °F
…
+45 °C
+113 °F
0.83
1.00
-15 °C
+5 °F
-099A-6, -125A-6, -144A-6: In the temperature range +40…45 °C (+104…113 °F), the
rated output current is not derated at all. In the temperature range +45…50 °C
(+113…122 °F), the rated output current is derated by 1% for every added 1 °C (1.8 °F).
The output current can be calculated by multiplying the current given in the rating table
by the derating factor (k):
244 Technical data