The testing methods for the current balance of transformer differential circuit

Focusing on the problem that velocity of differential circuits of hydraulic cylinder is affacted by flow resistance and the differential work state of directional-control valve,these facters are analyzed.

After the modification at PLC program,the soft reduction is achieved via hydraulic differential circuit and the billet quality is improved.

Using Multisim circuit simulation software simulation,with examples of the difference circuit depend on the ability to enlarge the output circuit forms,and entry forms unrelated simulation of the circuit differential voltage transmission characteristics of the circuit on the differential mode signal Larger role of the common mode signal suppression.

This paper points out the influence on the start-up circuit of the differential-voltage protection when the capacitor s primary connec- tion is changed.