Soft starter application

In the text below, a logical sequence will be used . This book is written with the thought of being a general guide for people working with softstarter applications but also for those just interested in learning more about this type of starting method. Starter by William Bernhardt and Richard Anderson, Rockwell Automation, Inc. Many applications could benefit from the ability to adjust the speed of a process while operating. Reasons for this include positioning, checking or adjusting alignment, or inspecting equipment, such as a.

While the question is simple, the answer is not. If you examine the function and purpose of the soft starter and drive, the answer becomes clearer. Generally, the application determines the best fit.

Does the application need speed control . What are the best ways to use soft starters ? Jeff Theisen, and John Streicher. Application Guide by Walter J Lukitsch PE, Gary Woltersdorf.

Abstract:There are usually several choices for starting mo- tors. Using an air core series reactor soft starter is very common practice for applications like. SIRIUS 3RW soft starters are a cost- effective alternative to using direct or wye-delta starters for starting three-phase motors.

They avoid undesirable side effects such as mechanical bumps in the machine and mechanics or voltage drops in the mains supply. The soft start in control . Trendsetter when it comes to switching, protecting, starting – the modular SIRIUS system. A new star is born – the extended family of SIRIUS soft starters.

When the smoothness always returns – soft starters for standard applications. If violent forces have to be tamed – soft starters for high- feature . Choosing between a soft starter and a variable frequency drive to fit your application. Motors often require large amounts of energy when quickly accelerating to full speed.

In the event that the generator will be providing power to more than one loa the most extreme conditions should be used to determine the mini- mum generator capacity that would be required for all predictable combinations of loads. A soft starter control motor accelaration, consisting of thyristor to control application of voltage to induction motor and thus reducing applied torque. During the ramp start sequence, two phases are controlled by modulating SCRs that are installed anti-parallel in two phases, while . To properly select a soft starter , there are a number of physical and application attributes that need to be considered for longevity of the soft starter.

Simply choose the application , the features you require, then select the best soft starter model to suit your needs. Additional information is available from brochures and manuals available from GE. This selection guide assumes . Soft Starter Selection Made Easy.