Patent · US Expired

Tap changer for a tapped or stepped transformer

US5694034A · kind A · utility

5Cited by

6References

3Claims

0Family size

Assignee

MASCHINENFABRIK REINHAUSEN GMBH · DE

Inventors

Dieter Dohnal · Lappersdorf, DE
Hans-Henning Lessmann-Mieske · Neutraubling, DE

Key dates

Filing date	Aug 26, 1996
Grant date	Dec 2, 1997
Priority date	—
Expiry date	Aug 26, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH01F29/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A tap changing circuit has each tap of a power transformer connected with a selector vacuum switching cell. The odd numbered cells and the even numbered cells are connected to respective sides of a load switch each including a further vacuum switching cell. The sides are bridged by a transition inductor or resistor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.