Voltage regulating device


Application Number: 00103066
Application Date: 2000.02.28
Publication Number: 1311466
Publication Date: 2001.09.05
Priority Information:
International: G05F1/30
Applicant(s) Name: Hokushiba Electric Co., Ltd.
Address:
Inventor(s) Name: Seki Nagataka
Patent Agency Code: 11021
Patent Agent: wang huimin
Abstract The invented voltage vegulating device is used to select the short circuit impedance ze. The method includes steps of to set voltage at any tap of secondary winding in exciting transformer as a V at the situationof tap switching over, to use V dividing the totalized short circuit impetance value ze (v/ze) of fuse tube, AC switch close loop and reactors connected with the tap circuit and then to select the short circuit impetance ze at the range of less than ITH of allowable surging flow current of thyristor, IF of fuse tube fusing current at the time of starting to several cycles of short circuit happening as well as less than ITH of allowable surging flow current of thyristor, but more than IF of fuse tube fusing current at the time of several cycles to dozens of cycles from begining of short circuit happening.