Invention Grant
- Patent Title: Surge arrester having an optical fault indicator
- Patent Title (中): 具有光学故障指示灯的避雷器
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Application No.: US13138090Application Date: 2009-12-01
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Publication No.: US08705221B2Publication Date: 2014-04-22
- Inventor: Richard Daum
- Applicant: Richard Daum
- Applicant Address: DE Neumarkt/Opf.
- Assignee: DEHN + SÖHNE GmbH + Co. KG
- Current Assignee: DEHN + SÖHNE GmbH + Co. KG
- Current Assignee Address: DE Neumarkt/Opf.
- Agent Gerald T. Bodner
- Priority: DE102009004345 20090112; DE102009022069 20090520
- International Application: PCT/EP2009/066112 WO 20091201
- International Announcement: WO2010/079015 WO 20100715
- Main IPC: H01C7/12
- IPC: H01C7/12 ; H02H1/00 ; H02H1/04 ; H02H3/22 ; H02H9/06 ; H02H5/04 ; H02H3/20 ; H02H9/04

Abstract:
The invention relates to a surge arrester which, in a housing (7), has at least one arrester element (3), in particular a varistor, a solder-fixed thermal disconnection point (5), which is connected to the arrester element, and a damage indicating device (11) for displaying the fault state, wherein the damage indicating device also queries the state of a thermal disconnection device, in particular a fuse, and presents the possible fault states of the arrester element and of the disconnection device mechanically in an OR combination in a suitable way. Furthermore the thermal disconnection device comprises a movable component, which is fixed by an indicator wire and is released after the melting or destruction of said wire. According to the invention, a guide part (9) for a compression spring (10) or similar force accumulator is provided on or in the housing.
Public/Granted literature
- US20120014028A1 SURGE ARRESTER HAVING AN OPTICAL FAULT INDICATOR Public/Granted day:2012-01-19
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