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Soft Starter Construction
The Flux compensated magnetic amplifier (FCMA) Soft starter essentially consists of predominantly inductive impedance in series with the motor windings to control the motor current through a potential divider.
Inductive impedance in series with the motor windings
Finally when the motor has reached full speed and the motor terminal voltage has reached around 90-96% a shorting device cuts the Mag Amps out of the motor circuit and the motor runs under normal operating conditions.
Inductive impedance in series with the motor windings with shorting device
Constructionally the Flux compensated magnetic amplifier is an extremely rugged device comprising of magnetic core and amply sized power windings. It should be emphasized that there is no external control loop on the system and impedance variation is the natural characteristic of the system achieved through suitable winding design and geometry.
This leads to 100% reliability of the operation.
Inductive impedance in series with the motor windings
Finally when the motor has reached full speed and the motor terminal voltage has reached around 90-96% a shorting device cuts the Mag Amps out of the motor circuit and the motor runs under normal operating conditions.
Inductive impedance in series with the motor windings with shorting device
Constructionally the Flux compensated magnetic amplifier is an extremely rugged device comprising of magnetic core and amply sized power windings. It should be emphasized that there is no external control loop on the system and impedance variation is the natural characteristic of the system achieved through suitable winding design and geometry.
This leads to 100% reliability of the operation.
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