The starting principle is based on the difference in resistivity between a liquid electrolyte and its vapour, contained in an electrode chamber.
The passage of the initial rotor current causes immediate partial vaporisation of the electrolyte and instantaneously adjusts resistance and starting torque to optimum values. During the run-up to speed, the thermal interchanges which occur progressively decrease the resistance.
A timed contactor then short circuits the low residual resistance.
The starting torque is determined according to the requirements of the driven machine or the current limitation.
Thông số kỹ thuật
>>> Electrical motor control RED