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Three-phase automatic rest overvoltage and undervoltage protector

A technology of over-undervoltage and protectors, which is applied in the direction of protection switches, emergency protection devices, and parts of protection switches. It can solve problems such as reduced production efficiency, looseness, distortion, and unstable product quality. The effect of improving the life and avoiding multiple welding

Inactive Publication Date: 2018-08-24
GARBSEN ELECTRIC SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding quality of the soft braided wire affects the temperature rise and performance of the product. Multiple welding also reduces the production efficiency and easily leads to the instability of product quality. Affects the performance of self-resetting overvoltage and undervoltage protectors

Method used

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  • Three-phase automatic rest overvoltage and undervoltage protector
  • Three-phase automatic rest overvoltage and undervoltage protector
  • Three-phase automatic rest overvoltage and undervoltage protector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 Shown is an embodiment of a self-resetting overvoltage and undervoltage protector. In this embodiment, the overall shape of the self-resetting overvoltage and undervoltage protector is roughly "convex". The self-resetting overvoltage and undervoltage protector includes an upper casing 1 and a lower casing 2. The upper casing 1 is convex, and the lower casing 2 is rectangular. The upper casing 1 and the lower casing 2 are connected by engagement. There are two small rectangular holes 101 at the bottom of both sides of the upper casing 1 . When the upper case 1 and the lower case 2 are engaged and connected, a small portion of the top edge of the lower case 2 is inserted into the bottom of the upper case 1 . At the positions corresponding to the four small holes on both sides of the bottom of the upper case 1, the lower case 2 has four corresponding protrusions. The protrusions are inserted into four small holes 101 at corresponding positions of the up...

Embodiment 2

[0031] In this embodiment, the relay 3 is composed of three separate small relays, each small relay is connected to two copper bending pieces, and the copper bending pieces are respectively located on both sides of the small relay, and the small relays are connected to form three Phase self-resetting overvoltage and undervoltage protectors.

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PUM

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Abstract

The invention discloses a three-phase automatic rest overvoltage and undervoltage protector. The three-phase automatic rest overvoltage and undervoltage protector comprises an upper shell and a lowershell; the lower shell comprises a relay, a first copper bend sheet, a second copper bend sheet, a third copper bend sheet, a fourth copper bend sheet, a fifth copper bend sheet, a sixth copper bend sheet and a null line metal sheet; a limiting apparatus is included in the lower shell; the upper shell and the lower shell are connected in a meshing manner to form a sealed shell; the six copper bendsheets and the relay are connected through a welding manner; and the null line metal sheet is connected with the two ends of the lower shell. By virtue of the three-phase automatic rest overvoltage and undervoltage protector, quick mounting can be realized and multiple times of welding can be avoided, and the normal operation and test of the overvoltage and undervoltage protector are not influenced; the whole copper bend sheets are manufactured from metal, so that the mechanical life is obviously prolonged; and in addition, by adopting a simple mechanical structural mode, reliability and safety are obviously better than those of a soft braided electric wire mode with multiple times of welding.

Description

technical field [0001] The invention relates to the field of basic electrical components, in particular to a three-phase self-resetting overvoltage and undervoltage protector. Background technique [0002] The self-resetting overvoltage and undervoltage protector is a common protective electrical appliance in the circuit system. The protector controls the relay by collecting the voltage information in the line. When the power supply line has overvoltage or undervoltage, the self-resetting overvoltage and undervoltage protector can safely cut off the circuit to avoid accidents caused by abnormal voltage being sent to the terminal electrical appliances. When the voltage returns to the normal value, the protector will automatically connect the circuit within the specified time to ensure the normal operation of the terminal electrical appliances under unattended conditions. [0003] The relay circuit of the traditional self-resetting overvoltage and undervoltage protector is co...

Claims

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Application Information

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IPC IPC(8): H01H71/08H01H71/02H01H83/10H01H83/12
CPCH01H71/08H01H71/02H01H83/10H01H83/12
Inventor 吴锐李雪朋陈若兰
Owner GARBSEN ELECTRIC SHANGHAI CO LTD