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Fuse element

A technology of fuses and components, applied in the direction of electrical components, fuse manufacturing, capacitors, etc., can solve the problems of reduced ability to maintain voltage, reduced insulation length, increased fuse resistance, etc., to achieve reduced risk and reduced capacitor size , improve the effect of diversion

Active Publication Date: 2015-04-29
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, through the length of these traces, the effective insulation length is reduced, which results in a reduced ability to hold voltage after fuse operation
Therefore, at least one fuse part must be significantly longer than necessary to provide a sufficiently long insulation length, resulting in a proportional increase in fuse resistance, which leads to undesired power loss and capacitor heating

Method used

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Examples

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Embodiment Construction

[0068] figure 1 An embodiment of a fuse element 10 according to the invention is shown. figure 1 Two elongated grooves 7 are shown forming four parallel metal sub-strips 9 of a straight fuse strip, which are respectively parallel to each other due to the grooves being located between the two sub-strips. The active responsive section produced by four parallel metal sub-strips 9 is formed on an elongated dielectric base layer made of polymeric material. The grooves 7 are aligned in series along the fuse metal layer. An elongated fuse metal layer is deposited on one side of the dielectric base layer, and an elongated groove 7 or opening is formed in an elongated fuse metal layer. The previously stated disadvantages of the conventional two-wire approach are overcome by the features of the present invention. The metal of the elongated fuse metal layer may be copper Cu. Alternatively, aluminum (Al), silver (Ag) or alloys thereof can be used as metal fuse material, which leads to...

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Abstract

A fuse element (10) and a method for manufacturing the same, are provided whereby the fuse element (10) consists of an active response part which is advantageously formed by at least four metal sub-strips (9) of an elongated fuse metal foil with at least respectively two metal sub-strips being parallel being provided by at least two elongated recess within one or two self-supporting elongated fuse metal strips, with the at least two recesses being provides in serial alignment along the respective fuse metal strip, including leading and trailing parts for electrical connection of each fuse element (10), the elongated fuse metal foil can be reinforced by an elongated dielectric base layer made of polymer material. Accordingly, performance of such a fuse element (10) can be increased and manufacturing costs can be decreased. The invention especially can be applied to a plurality of capacitor sub-units being integrated in housings and submerged in a cooling and insulating liquid within the housing.

Description

technical field [0001] The present invention relates to a power capacitor arrangement comprising a plurality of capacitor subunits, wherein each capacitor subunit is electrically protected by an internal fuse element connected in series with the capacitor subunit. [0002] The invention also relates to a high power capacitor assembled in a capacitor bank and consisting of a plurality of capacitor subunits in a common housing, wherein the capacitor subunits are electrically connected in parallel and series circuits. Such capacitor banks can be used, for example, in power factor correction systems in medium-voltage or high-voltage grids. Background technique [0003] Power factor correction systems in medium or high voltage grids require high power capacitors assembled in large capacitor banks. Individual capacitors are usually constructed from multiple smaller capacitor subunits located in a single housing. Smaller capacitor subunits are connected in different variations of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/10H01H85/06H01G2/16
CPCH01G2/16H01H85/06H01H85/10H01G4/38Y10T29/49107Y02E40/30H01H69/02H01H85/12H02H7/16
Inventor J.M.克里斯特曼W.哈特曼S.亚马扎基
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG
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