Standard E-type test block

Standard E-type test block product introduction The standard E-type test block (also known as 3-hole AC test ring) is made of annealed 10 steel forgings, the insulating liner is made of phenolic bakelite, and the conductive core rod is made of pure copper to verify magnetization. The current is the comprehensive performance of magnetic powder of alternating current or single-phase half-wave rectified current.