US 10,504,639 B2Granted

Overvoltage arrester

AssigneeSiemens Aktiengesellschaft

InventorsAlexander Bockarev, Bastian Robben, Henrik Roggow, Markus Sulitze

Life of this patent

Estimating the term…

Loading patent…

Abstract

Overvoltage arresters are used to protect against overvoltages in electrical energy transmission systems. An overvoltage arrester has a discharge column which extends along a longitudinal axis and is clamped in between end fittings by a plurality of tensile elements which radially surround the discharge column and are secured in the end fittings. At least one of the end fittings has a first thread for attaching a connecting bolt. Furthermore, the end fitting has a fitting body with a second thread for receiving a pressure screw for generating an axial force on the discharge column. Accordingly the first and second threads overlap along an axial section.

Claims5

Dependent claims

An overvoltage arrester, comprising:

end fittings;
a plurality of tensile elements;
a discharge column extending along a longitudinal axis and clamped in between said end fittings by means of said plurality of tensile elements radially surrounding said discharge column and secured in said end fittings;
and
at least one of said end fittings having a pressure screw, a first thread for attaching to a connecting bolt and a fitting body with a second thread for receiving said pressure screw for generating an axial force on said discharge column, said first and second threads overlapping along an axial section;
said first thread disposed in said fitting body;
said pressure screw embodied in a manner of a pot having a base which points toward said discharge column and a side wall extending away from said base and enclosing a hollow interior space;
and
said fitting body having an axial depression formed therein and said second thread extending into said axial depression.

6 more elements

Dependencies are inferred from the claim text.