Surrounding Air Temperature Derating, Ip21 (Ul Type 1) - ABB ACH580-01 Hardware Manual
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242 Technical data
Surrounding air temperature derating, IP21 (UL Type 1)
IP21 (UL Type 1) drive types, other than the exceptions below
In the temperature range +40...50 °C (+104...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, in the diagram below).
k
1.00
0.95
0.90
0.85
0.80
...
-15 °C
+5°F
IP21 (UL Type 1) drive type -078A-4; -099A-6, -125A-6, -144A-6
-078A-4: 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% 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):
k
1.00
0.95
0.90
0.85
0.80
0.75
...
-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).
+40 °C
+50 °C
+104 °F
+122 °F
+40 °C
+45 °C
+50 °C
+104 °F
+113 °F
+122 °F
T
0.85
T
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