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INSTALLATION AND CONNECTION
4.7.3 Ventilation of the motor chokes from size 25
Motor chokes must be ventilated from size 25 and from an operating frequency of 600
Hz.Ventilationmustbeinthelowerthirdofthemotorchokeheight.Theairowmust
be at least 15 m³/min.
A
Legend
A 1/3 of the motor choke height
Figure 23: Ventilation of the motor chokes from size 25