Soft starter for asynchronous motors

Now, thanks to a simple design, high reliability and simplicity of service, the greatest distribution was received by an electro-drive on the basis of the asynchronous electric motor with frequency regulation. However till now very often meets and "direct start-up" asynchronous electric motor, its direct connection to a power. At direct start-up there is the rigid blow essentially reducing service life of all mechanism. Besides, as a result of the big starting currents infringements in a power, pressure throws, warps of phases and etc. take place, it is necessary to project all system of an electrical supply with a large supply that finally conducts to the big financial expenses. Distinctive feature of electronic devices of soft startconsists that management of electric motor start is carried out sodt. Thus, electric motor work as optimum image corresponds to the loading created by the final executive mechanism. Thus multiphase restriction of a starting current is automatically carried out.