The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2013
Filed:
Jun. 08, 2010
John Ruess, Farmington, UT (US);
Gregory Hoepfner, Salt Lake City, UT (US);
John Ruess, Farmington, UT (US);
Gregory Hoepfner, Salt Lake City, UT (US);
Schneider Electric USA, Inc., Palatine, IL (US);
Abstract
A hybrid surge protection device (SPD) having a clamping voltage that is controlled by precisely limiting the overshoot voltage of a gas discharge tube (GDT) in a hybrid suppression network. The suppression network is conventionally connected between a protected line carrying current from a power source to a load and a return connection. The network includes a main surge suppression varistor (VR) connected in series with the GDT. A clamping control circuit in parallel with the network includes a voltage limiting device (VR) in parallel with the GDT for preventing voltage overshoot by the GDT above a limiting voltage responsive to an occurrence on the protected line of a surge combination wave. The clamping control circuit also includes a capacitor (C) connected in parallel with the VRproviding a bypass path for electrical current and voltage potential to the GDT. Biasing resistors Rand Rcan be connected in parallel to Cand VR, respectively, to distribute the voltage between the clamping control circuit and the network.