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Neutral-point grounding resistance cabinet

A technology of neutral point grounding and resistance cabinets, which is applied in the direction of electrical components, circuit devices, emergency protection circuit devices, etc., and can solve problems such as resistance contact together, equipment damage, casualties, etc.

Inactive Publication Date: 2014-10-29
安徽恒凯电力保护设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing neutral point grounding resistance cabinet currently used, two adjacent pieces of resistance may still touch together, resulting in a short circuit of the resistance element, resulting in equipment damage, and even unnecessary accidents such as casualties

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Embodiment Construction

[0013] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0014] refer to Figure 1-2 , the specific embodiment adopts the following technical solutions: neutral point grounding resistance cabinet, including cabinet body 1, nickel-chromium alloy resistance 2, horizontal insulator 3, vertical insulator 4, support insulator 5, support 6 and voltage transformer 7, the cabinet The body 1 is provided with a bracket 6, and the bottom of the cabinet below the bracket 6 is provided with a ground connection hole 9, and the bracket 6 is provided with three rows of nickel-chromium alloy resistors 2 through the bracket insulator 5, and the two ends of the nickel-chromium alloy resistor 2 are fixed on the On the side plate 8 , adjacent nickel-chromium alloy resistors 2 are insulated and fixed by a plurality of vertic...

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Abstract

The invention discloses a neutral-point grounding resistance cabinet, and relates to a resistance cabinet. The neutral-point grounding resistance cabinet comprises a cabinet body, nickel-chromium alloy resistors, horizontal insulators, vertical insulators, support insulators, a support and a voltage transformer, wherein the support is arranged in the cabinet body; a grounding connection hole is formed in a cabinet bottom below the support; three rows of the nickel-chromium alloy resistors are arranged on the support through the support insulators; the both ends of each of the nickel-chromium alloy resistors are fixed on side plates through the horizontal insulators; the adjacent nickel-chromium alloy resistors are insulated and fixed through a plurality of the vertical insulators; the nickel-chromium alloy resistors are further connected with the voltage transformer. The neutral-point grounding resistance cabinet disclosed by the invention is good in insulativity, high in safety, capable of avoiding the occurrences of accidents, and capable of playing current-limiting and voltage-dropping roles in case of a grounding fault.

Description

technical field [0001] The invention relates to a resistance cabinet, in particular to a neutral point grounding resistance cabinet. Background technique [0002] The neutral point grounding methods of the power distribution system usually include: the neutral point is not grounded, the neutral point is grounded through a resistor, the neutral point is grounded through an arc suppression coil and grounded through an arc suppression harmonic elimination cabinet. several ways. With the development of the national economy, distribution networks in many cities have changed the situation in which overhead lines were the mainstay in the past, but cable lines. At the same time, some new equipment, such as compact closed SF6 switchgear, XLPE cables and zinc oxide arresters are more and more widely used, which makes the original non-effective grounding method somewhat inapplicable. Therefore, how to effectively and economically set the neutral point grounding method has become the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H9/02
Inventor 姜坛王善立
Owner 安徽恒凯电力保护设备有限公司
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