BP8Y-906/4512 frequency sensitive rheostat frequency sensitive rheostat factory Shandong Qingyun

First, use BP8Y series of frequency sensitive rheostat (hereinafter referred to as varistor) suitable for capacity from 1.5 to 200 kilowatts, AC 50 Hz YZR Series metallurgical lifting of three-phase asynchronous motor frequent starting and operating the device in case of reverse. The induction motor rotor circuit access rheostat, often followed by the general way, without another short-fit contact and other equipment. Second, the model significance frequency sensitive rheostat working conditions: according to the frequency of operation can be divided into three categories: the first category: slightly frequent, 100-400 times per hour, in addition to the machine shop outside the main hook of overhead crane, machine translation machine on the hook, the meter roller, drawn steel, etc., most just starting on the power. The second category: the more frequent, 400-600 times per hour. Metallurgical rolling four bridge cranes, in addition to the main hook, hook on the machine translation machine, roller mill before and after work, extending roller, etc., most just starting on the power. The third category: frequent operation, the first hour 600-1000, after lifting, lifts roller, pressure device, pull steel machine, rolling mill rolls. Third, the structure and installation dimensions rheostat is essentially a non-contact electromagnetic components webbed, equivalent to an equivalent impedance in the motor starting process, because the equivalent impedance, with the rotor current frequency is reduced automatically drop, just a level rheostat can smooth start up the motor. Rheostat is essentially a core loss large three-phase reactor. It is superimposed by a number of pieces Yamagata steel plate, consists of two main parts of the core and coil spacer gap between each plate. Core using mountain-shaped structure made of cold punch. Construction and installation dimensions shown in Figure One.