8 Description
The EduTrainer
®
(order No. 8023979) can be operated with switch S1 at two speeds. The number of poles of the
asynchronous machine is increased at a ratio of 1: 2 and the speed is therefore changed at a ratio of 2: 1.
For motors with a separate winding, the speed can be changed according to the number of poles.
Basic diagram of the Dahlander circuit
Low speed (triangle)
Switch position "S1" = 1
Basic circuit diagram, "separate winding"
Low speed
Switch position "S2" = 1
28
is used for reversing the polarity of three-phase motors. Motors with a Dahlander winding
Warning
The device may only be used in circuits which are protected with a maximum of 16 A.
A continuous PE conductor connection must be ensured before operation.
High speed (double star)
Switch position "S1" = 2
High speed
Switch position "S2" = 2
© Festo Didactic
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