Siemens SINAMICS S120 - 2.13.3.11 Technical Specifications of the Transformers

Line Connection Booksize
2.13 Line connection variants
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
139
2.13.3.11 Technical specifications of the transformers
Basic reference conditions under which the transformers can be loaded with the rated
power P
n
indicated in the selection tables:
● Continuous operation P
n
● Frequency 50 Hz to 60 Hz
● Degree of protection IP00
● Installation altitude up to 1000 m above sea level
● Rated ambient temperature t
a
Installation and operating conditions that deviate from these values, influence the
permissible continuous loads. For example, a lower ambient temperature of 30 °C enables
a higher utilization.
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Figure 2-52 Load characteristics in relation to the ambient temperature
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Figure 2-53 Load characteristics in relation to the installation altitude
The mentioned transformers have a neutral point that can be loaded with 10%. They are
mainly designed for secondary-side symmetrical supply systems.