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Static Transfer Switch
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User Manual
Page 16 (28)
ELTEK VALERE DEUTSCHLAND ©2009 UM_UNB_E_R04
3.5 Cooling/Air flow direction
The unit is cooled with an internal fan. The airflow is from the front to rear side. The fan is monitored and speed
controlled by device temperature. For a sufficient airflow a minimum space (A) of 50 mm between the unit and the
rear cabinet wall as well as an unobstructed influx of supply air from front side is necessary.