Characteristics; Current Derating - Siemens SINAMICS S120 Equipment Manual

Line voltage 3-ph. 380 V to 480 V AC ±10% (-15% < 1 min)
Article number
Max. ambient temperature
without derating
with derating
Degree of protection
Width
Height
Depth
Weight
Rated power of a typical standard induction motor at 400 V 3 AC
1)
Current consumption of Power Module only. If a Control Unit is supplied with 24 V DC from the Power Module, its
2)
current consumption must be added.
Max. motor cable length 100 m (shielded) in conjunction with a line filter to comply with the EMC limit values of EN
3)
61800-3 Category C2.
Depth = 421 mm including front cover when a Control Unit is installed
4)
5.3.7

Characteristics

5.3.7.1

Current derating

Derating as a function of the ambient temperature and installation altitude
Air-cooled SINAMICS S120 chassis format units and the associated system components are
rated for an ambient temperature of 40 °C and installation altitudes up to 2000 m above sea
level.
The output current must be reduced for ambient temperatures > 40 °C. Ambient
temperatures above 55 °C are not permissible.
At installation altitudes > 2000 m above sea level, it must be taken into account that the air
pressure, and therefore air density, decreases as the height increases. This reduces the
cooling effect as well as the insulating strength of the air.
Due to the reduced cooling efficiency, it is necessary, on the one hand, to reduce the
ambient temperature and on the other hand, to reduce the heat loss in the built-in unit by
reducing the output current, whereby ambient temperatures lower than 40 °C may be offset
to compensate.
The following table specifies the permissible output currents as a function of the installation
altitude and ambient temperature. The specified values already include the permissible
compensation in respect of installation altitude and ambient temperatures < 40° C –
temperature at the air intake of the chassis unit.
The values apply under the precondition that a cooling air flow through the devices is
ensured as specified in the technical data.
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
6SL3310– 1TE32-1AA3
°C 40
°C 55
IP 20 or IPXXB
mm 326
mm 1400
mm 356
4)
kg 104
1TE32-6AA3 1TE33–1AA3 1TE33-8AA3
40 40
55 55
326 326
1400 1533
356 545
4)
104 162
Power Modules
5.3 Power Modules Chassis
1TE35-0AA3
40 40
55 55
326 326
1533 1533
545 545
162 162
155