Title: High accuracy LV voltage transformer compensated by booster
Application Number: 85100872 Application Date: 1985.04.01
Publication Number: 1002758 Publication Date: 1986.08.27
Approval Pub. Date: Granted Pub. Date: 1987.07.29
International Classifi-cation: H01F27/38,H01F40/04
Applicant(s) Name: Mechinery Design Address:
Inventor(s) Name:
Attorney & Agent: FAN HUA
Abstract:
     The main feature of this invention is that a ring-shaped core of the booster is also used as the main core of the voltage transformer, and a smoller compensating core is piled on the arbitrary surface around said main cose, and the primary and secondary windings and additional windings are wound onto the main and the smoller cores. The E.M.F induced at smoller core can compensate on-load error of the transformer while the current supplied by additional windings can compensate on-load error. Thus the booster is combined with high accuracy voltage transformer, so the combination has doubled functions or can be separately used, and the accuracy of this transformer is raised.
Time: 10
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