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Fuse

A fuse and fusing technology, applied in the direction of emergency protection devices, circuits, electrical components, etc., can solve unnecessary problems

Inactive Publication Date: 2015-01-21
GE ENERGY POWER CONVERSION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are optimal for high power systems and are therefore associated with a level of complexity that would not be suitable for protection devices used at relatively low currents. necessary

Method used

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Examples

Experimental program
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Embodiment Construction

[0052] Throughout the following description, similar components are given the same reference numerals.

[0053] Fuse assembly 1 in figure 1 and figure 2 , and includes a catheter assembly 2 or housing having four catheters 4a...4d in a 2x2 array. Each conduit contains a fusible conductor element 6 (or a circular cross-section fuse line element) and an accumulator 8 submerged in a liquid dielectric medium such as MIDEL7131. More specifically, the interior of each conduit 4a...4d is filled with a liquid dielectric such that the fusible conductor element 6 and the accumulator 8 operate in a dielectric environment. The fusible conductor element 6 extends substantially parallel to the longitudinal axis of the catheter assembly 2 . The fuse assembly 1 thus comprises four fusible conductor elements 6a...6d (ie n=2).

[0054] The first external terminal 10a is located at the first end of the first conduit 4a. The second external terminal 10b is located at the first end of the se...

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PUM

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Abstract

The invention relates to a fuse assembly (1) for interrupting fault current in an external dc circuit. The fuse assembly (1) includes fusible conductor elements (6a...6d) that extend substantially along, and are circumferentially around, a longitudinal axis of the fuse assembly. The fusible conductor elements (6a...6d) are connected together in series to define fuse elements (18, 24) and the fusible conductor elements (6a...6d) are orientated within the fuse assembly (1) such that current flowing along each fusible conductor element is in the opposite direction to current flowing along the fusible conductor element or fusible conductor elements adjacent to it. This creates a mutually repulsive force between the fusible conductor elements (6a...6d). The fuse assembly (1) also includes a first supply terminal (10a) connected to an end of a first fuse element (18) and connectible to a dc supply, a first load terminal (10b) connected to an opposite end of the first fuse element (18) and connectible to an electrical load, a second supply terminal (10d) connected to an end of a second fuse element (24) and connectible to the dc supply, and a second load terminal (10c) connected to an opposite end of the second fuse element (24) and connectable to the electrical load.

Description

technical field [0001] The present invention relates to fuses, and in particular to fuses which can be used to interrupt fault currents in external direct current circuits. Background technique [0002] Fault-rated fuses are well known which rupture and subsequently develop a sufficient arc voltage to interrupt the flow of current in the external DC circuit. It is also known that arc extinguishing in fuses is caused by the removal of heat from the arc through a number of cooling processes influenced by the properties of the material surrounding the arc. These fuses and their underlying principles are described in Wright & P G Newbery's 'Electric Fuses', 1982. [0003] It is known to extend the length of the arc by various methods of deflection and shielding, thereby increasing the arc voltage achievable within a particular size of the fuse assembly size. However, these methods are optimal for high power systems and are therefore associated with a level of complexity that w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/02
CPCH01H85/0241H01H2085/025H01H85/0039H01H85/40H01H85/50H01H2085/209
Inventor A.D.克雷恩A.P.戈德尼W.M.布卢伊特
Owner GE ENERGY POWER CONVERSION TECH