Patent · US Expired

Transformer tap changing and step switch assembly

US5516992A · kind A · utility

3Cited by

9References

7Claims

0Family size

Assignee

MASCHINENFABRIK REINHAUSEN GMBH · DE

Inventors

Dieter Dohnal · Lappersdorf, DE
Josef Neumeyer · Waldetzenberg, DE

Key dates

Filing date	Sep 27, 1994
Grant date	May 14, 1996
Priority date	—
Expiry date	Sep 27, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH01H9/0044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A cast-resin transformer has a transformer housing, a plurality of windings each having a plurality of taps, respective contacts connected to the taps and mounted on the housing in respective arrays which are all identical, and respective identical mounting elements on the housing at each of the contact arrays. Respective identical step switches each serve a respective winding of the transformer and each have a switch housing secured to the respective mounting element of the transformer housing at the respective contact array and a step contact movable along the respective connector elements and electrically engageable therewith. A drive motor and a main shaft are connected to all of the step contacts for synchronously stepping the step contacts along the respective connector elements.

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