Patent · US Active

Transformer protection system

US9935454B2 · kind B2 · utility

1Cited by

2References

15Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Jens Tepper · Wolfenbüttel, DE
Abdelbahi Tamzarti · Kassel, DE
Nils Leenen · Lorsch, DE
Stefan Staudinger · Bestwig, DE

Key dates

Filing date	Jun 8, 2015
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Mar 7, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/042
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An exemplary transformer protection system including a protective housing having a transformer which is arranged in the protective housing, a transformer core, and at least one primary-side electrical winding and a secondary-side electrical winding which is magnetically coupled to the primary-side electrical winding. The protection system also includes at least one detection apparatus for a measurement variable from which the occurrence of an interference arc within the protective housing can be derived, and an evaluation unit for generating a fault signal from the measurement variable of the at least one detection apparatus in the case of an interference arc. Further, the protection system includes at least one rapid-earthing apparatus for at least one of the electrical windings which is intended to be activated by the fault signal, wherein the rapid-earthing apparatus is designed in such a way that effective electrical earthing immediately after activation of the fault signal is ensured.

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