Patent · US Active

Surge protector

US8958194B2 · kind B2 · utility

0Cited by

5References

18Claims

0Family size

Assignee

PHOENIX CONTACT GMBH & CO. KG · DE

Inventors

Joachim Cerny · Bielefeld, DE
Thomas Meyer · Ottenstein, DE
Rainer Durth · Niederheesten, DE

Key dates

Filing date	Mar 23, 2012
Grant date	Feb 17, 2015
Priority date	—
Expiry date	Mar 23, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02H9/048
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A surge protection device (SPD) includes a spark gap (SG) and in series to the spark gap (SG) a temperature-dependent resistance element (R) with positive temperature coefficient, wherein the spark gap (SG) has a certain holding current, wherein the resistance element (R) is sized such that when a switching temperature is reached, the current is limited such that the holding current of the spark gap is undercut and is switched off, and wherein the resistance element is sized such that in the case of a transient event, the switching temperature is not reached.

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