Patent · US Active

Device for connecting a single-phase supply line to a three-phase power supply system

US8462522B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Gruber · Leverkusen, DE
Ulrich Halfmann · Leopoldshöhe, DE
Wolfgang Recker · Steinfeld (Oldenburg), DE

Key dates

Filing date	Feb 13, 2009
Grant date	Jun 11, 2013
Priority date	—
Expiry date	Jun 27, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60L2200/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device for connecting at least one single-phase power supply line which, in particular, feeds the overhead line of a railroad track, to a three-phase power supply network. A primary side of a transformer is connected to the power supply network and a secondary side is connected to the single-phase power supply line and to a ground connection. A symmetry device is connected to a phase of the transformer, to the ground connection, and to the single-phase power supply line.

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