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Example circuits
A.1 Main circuit connection
A.1.4
Inside-delta circuit
The inside-delta circuit requires a motor with windings that can be connected in a delta
circuit where a line voltage prevails.
If the soft starter is operated in an inside-delta circuit, the motor power output of the
individual devices is increased by a factor of root 3. On the front of the device behind the
hinged cover, you will find a value table with increased current values for an inside-delta
circuit.
If the load voltage is present and the motor is connected to the device, the soft starter
automatically detects the type of connection.
204
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
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