T
1.00
0.90
+40 °C
+104 °F
+50 °C
+122 °F
k
0.80
For example:
Derated current
Temperature
I
Hd
I
Ld
I
2
40 ºC (104 ºF)
0.95 ·
I
Hd
0.95 ·
I
Ld
0.95 ·
I
2
45 ºC (113 ºF)
0.90 ·
I
Hd
0.90 ·
I
Ld
0.90 ·
I
2
50 ºC (122 ºF)
Altitude derating
At altitudes 1000 … 2000 m (3281 … 6562 ft) above sea level, the output current derating
is 1 percentage point for every added 100 m (328 ft). For example, the derating factor for
1500 m (4921 ft) is 0.95. For altitudes above 2000 m (6562 ft), contact ABB.
If surrounding air temperature is below +40 °C (+104 °F), the derating can be reduced by
1.5 percentage points for every 1 °C (1.8 °F) reduction in temperature. A few altitude derating
curves are shown below.
206 Technical data
Summary of Contents for ACS880-37
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 37 drives 45 400 kW 60 450 hp Hardware manual ...
Page 2: ......
Page 4: ......
Page 26: ...26 ...
Page 83: ...Mechanical installation 83 10 ...
Page 84: ...84 ...
Page 126: ... B055 a X504 126 Electrical installation ...
Page 144: ...144 ...
Page 150: ...150 ...
Page 152: ...152 ...
Page 160: ... 160 Maintenance ...
Page 196: ... 196 Maintenance ...
Page 232: ...R8 IP22 UL Type 1 and option B054 IP42 UL Type 1 Filtered 232 Dimension drawings ...
Page 233: ...R8 IP54 UL Type 12 option B055 option C129 Dimension drawings 233 ...
Page 235: ...R8 IP22 UL Type 1 and IP42 UL Type 1 Filtered option B054 option E206 Dimension drawings 235 ...
Page 236: ...R8 IP22 UL Type 1 option E202 236 Dimension drawings ...
Page 237: ...R11 IP22 UL Type 1 and IP42 UL Type 1 Filtered option B054 Dimension drawings 237 ...
Page 238: ...R11 IP54 UL Type 12 option B055 238 Dimension drawings ...
Page 240: ...R11 IP54 UL Type 12 option B055 option C128 240 Dimension drawings ...
Page 241: ...R11 IP54 UL Type 12 option B055 option C129 Dimension drawings 241 ...
Page 242: ...R11 IP54 UL Type 12 option B055 options C129 H350 H352 242 Dimension drawings ...
Page 243: ...R11 IP22 UL Type 1 and IP42 UL Type 1 Filtered option B054 option D150 Dimension drawings 243 ...
Page 245: ...R11 IP22 UL Type 1 and IP42 UL Type 1 Filtered option B054 option E206 Dimension drawings 245 ...
Page 246: ...R11 IP22 UL Type 1 option E202 246 Dimension drawings ...
Page 267: ... Declaration of conformity The Safe torque off function 267 ...
Page 268: ...268 The Safe torque off function ...
Page 280: ...280 ...