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Falling-type fuse

A drop-out fuse and fuse tube technology, applied in the field of electric power, can solve problems such as inability to drop quickly, poor over-current capability, and poor wind resistance, and achieve strong electrification capability, long service life, and strong wind resistance Effect

Active Publication Date: 2013-10-23
吉林市能兴电力设备有限公司
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AI Technical Summary

Problems solved by technology

Drop-out fuses are generally suitable for power systems with a frequency of 50HZ and a rated voltage of 35KV and below. The existing drop-out fuses have small flow, poor wind resistance, poor over-current capability, and cannot be quickly dropped when overloaded. question

Method used

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Examples

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0022] like Figure 1~5 As shown, a drop-out fuse includes an insulator assembly 1 and a fuse tube assembly 13. The upper static contact assemblies 2-10 and the lower static contact assembly 14 of the drop-out fuse are respectively installed on the upper and lower sides of the insulator assembly 1. terminal, and connected to the upper moving contact 12 of the fuse tube assembly 13 through the connecting plate 2.

[0023] like figure 2 As shown, the dropout fuse includes a conductive plate 6 electrically connected to the fuse tube assembly 13, and the end of the upper moving contact 12 of the fuse tube assembly 13 is provided with a spherical surface of a contact nut 11; correspondingly, the The conductive plate 6 is provided with a ball-and-socket surface matching the spherical surface. The spherical surface can be fixed on the upper movin...

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Abstract

The invention discloses a falling-type fuse which comprises a fuse tube assembly and a conductive plate electrically connected with the fuse tube assembly. The end of an upper moving contact of the fuse tube assembly is provided with a spherical surface of a contact nut. Correspondingly, the conductive plate is provided with a ball socket surface and the ball socket surface is matched with the spherical surface. The middle part of the upper moving contact of the fuse tube assembly is provided with a conical surface which is connected with the spherical surface. A conductive rod made of a beryllium-bronze rod is fixed around the conical surface. An insulating tube of the fuse tube assembly is coated with a silicon rubber. The falling-type fuse can be widely applicable to the power systems with voltage levels of 10KV, 35KV, 66KV, and the like. The falling-type fuse is characterized by large current capacity, high wind resistance, good resistance to uncleanness, quick falling during overload, stable and reliable operation, long service life, low cost of maintenance, and the like.

Description

technical field [0001] The invention relates to the field of electric power, and more specifically, relates to a dropout fuse. Background technique [0002] The drop-out fuse is installed on the high-voltage side of the distribution transformer or the main line of the power distribution. It is used in places with high protection performance requirements. It can be used in conjunction with the isolating switch to replace the automatic air switch; it can also be used in conjunction with the load switch to replace Highly priced circuit breakers. At the same time, it also has the functions of short circuit protection, overload protection and isolation circuit. Drop-out fuses are generally suitable for power systems with a frequency of 50HZ and a rated voltage of 35KV and below. The existing drop-out fuses have small flow, poor wind resistance, poor over-current capability, and cannot be quickly dropped when overloaded. question. Contents of the invention [0003] The techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/54H01H71/20
Inventor 潘龙雨姜万超刘元琦马群孙友群列剑平
Owner 吉林市能兴电力设备有限公司
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