China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

We all know that traditional magnetic ballast is E -shaped core made ​​of silicon steel stack and subsequently sets made ​​with enameled circle around made ​​. Since the E -shaped magnetic steel sheet uneven lines , combined with its E -shaped steel sheet mechanical properties is limited , it is impossible to improve the magnetic flux density , and therefore , in order to reduce eddy current loss of the E-shaped silicon steel , tend to be very thin silicon steel , silicon steel be insulated sheet , so the duty ratio rising core is bound to increase in the core area of ​​the design needs to be compensated , and a corresponding increase in wire along the perimeter , increasing material loss silicon steel and enameled wire , increasing the volume and weight of the ballast , the ballast itself increased copper loss and iron loss , an increase of its losses.

Given the overall shape of the ballast section of the iron core loss , size, window size , the magnetic flux density , the silicon steel sheet thickness , and other factors related to the mains frequency . Therefore, the traditional characteristics of the E-shaped structure ballast , ballast after reshaping how to shorten the magnetic circuit , reducing the core volume , reduce the loop length , narrow space , reducing ballast own loss , improve efficiency and heat our ability to design guidelines .

Further , the magnetic ballast loss of the ballast is also proportional to the volume of the ballast core . When the cross-sectional area and the core values ​​Bm be taken , as far as possible will be designed to be a minimum core volume , the smaller the size , the iron loss is correspondingly smaller. Core volume can be approximated as a core cross-sectional area of ​​the path length L of the product.