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Protection method of outdoor terminal box

A technology of terminal blocks and terminal boxes, which is applied in the direction of substation/power distribution device shells, etc., can solve the problems of moisture infiltration into the box, and achieve the effect of ensuring normal operation, ensuring normal production, and expanding accidents

Active Publication Date: 2016-01-27
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Did not fundamentally solve the problem of moisture infiltration into the box

Method used

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  • Protection method of outdoor terminal box

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Embodiment Construction

[0008] Such as figure 1 As shown, the present invention is an improvement on the prior art. The terminal box is installed on the side of the cable trench, and the horizontal distance between the center of the terminal box and the center of the cable trench cover is about 1m to 3m. The cables are enclosed by PVC conduits. There is a perforation on the cover plate of the cable outlet trench, and there is a protruding edge greater than 5cm high on the upper side of the perforation, which is convenient for covering the PVC tee. The lower port of the PVC ventilation tee can be set on the upper edge of the cover plate, the upper port of the tee is open for ventilation and installed with a rainproof cap, and the third port of the tee is used to pass through the cable, and is connected to the bottom of the terminal box through the threading pipe. In this way, most of the moisture in the ditch is exhausted through the upper opening of the tee, and the gap between the cable and the PVC...

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Abstract

The invention relates to the power supply field, particularly relates to an outdoor connection terminal box protection method. According to the outdoor connection terminal box protection method, the horizontal distance between a terminal box center and a cable trench cover plate center is from 1 to 3 m; a cable insertion hole is formed in the cable trench cover plate; a protruding edge which is 5 to 10 cm higher than the horizontal plane is arranged on the upper side of the insertion hole; the upper side of the protruding edge sleeves a lower opening of a ventilation tee joint; an upper opening of the ventilating tee joint is opened to ventilate and is provided with a rainproof cap; a third opening in the lateral side of the ventilation tee joint is used for inducing the cable; the cable is connected with the bottom of the terminal box through a cable penetrating pipe. The outdoor connection terminal box protection method thoroughly solves the problem that moisture permeates to the box.

Description

technical field [0001] The invention relates to the field of power supply, in particular to a method for protecting an outdoor terminal box. Background technique [0002] Secondary system cables such as protection and monitoring of outdoor equipment in substations are connected in the outdoor terminal box, and then the secondary cables go down to the cable trench, then to the basement of the main control room, and then up to the main control room, where they are connected to protection cabinets and other equipment . The outdoor terminal box should have good rain-proof and moisture-proof performance to ensure the reliable operation of the secondary system. Most terminal boxes are still in use at present. Although the box body itself meets certain requirements for rainproof, sealing, and ventilation design, because it is directly installed on the top of the cable trench cover, water seepage in the cable trench will cause severe moisture in the trench, a large amount of moistu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B1/28
Inventor 赵亮王瑞红
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD