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Auxiliary equipment used on manual electric machine actuator

A technology for motor starters and auxiliary equipment, which can solve the problems of increased manufacturing costs and complex circuit structures by applying switches that operate when the current is lower than a predetermined value, switches that operate when the voltage is lower than a predetermined value, and circuits.

Inactive Publication Date: 2004-07-21
LG IND SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing manual motor starter and its accessories increase the manufacturing cost and require an installation space larger than the entire area of ​​two manual motor starters and two accessories
In addition, the circuit structure connecting the power supply to the manual motor starter and the load is also complicated

Method used

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  • Auxiliary equipment used on manual electric machine actuator
  • Auxiliary equipment used on manual electric machine actuator
  • Auxiliary equipment used on manual electric machine actuator

Examples

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Embodiment Construction

[0022] Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to denote the same or similar components, and repeated descriptions of the same or similar components are omitted.

[0023] Figure 4 It is a perspective view showing an accessory device 2 according to an embodiment of the invention. Figure 5 is a perspective view showing the interior of an accessory device 2 according to an embodiment of the present invention, and Figure 6 and Figure 7 is a longitudinal sectional view of an accessory device 2 according to an embodiment of the present invention.

[0024] The accessory device 3 of the present invention includes a case 21 which forms the appearance of the accessory device 2 .

[0025] The undervoltage tripping coil is partly installed in the case 21 . The undervoltage trip coil section includes an undervoltage trip...

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Abstract

Disclosed is an accessory device for a manual motor starter attached to one side of a body of the manual motor starter so as to perform various accessory functions, such as a forcible trip function for the manual motor starter by remotely switching the manual motor starter or a trip function for the manual motor starter when under-voltage occurs between a power source and load. A remotely switchable trip function and an under-voltage trip function are achieved by using one accessory device.

Description

technical field [0001] This invention relates to an accessory device for a circuit breaker for protecting a type of electric motor known as a "manual motor starter"; in particular to a manual motor starter accessory attached to one side of the main body of a manual motor starter equipment to perform various ancillary functions, such as the forced tripping function of a manual motor starter by remote switching of the manual motor starter, or the tripping function performed when an undervoltage develops between the source and the load; and relates more particularly to An accessory to a manual motor starter capable of performing not only a remotely switchable trip function but also an undervoltage trip function. Background technique [0002] Generally according to the prior art, various auxiliary devices are selectively connected to the manual motor starter according to the various purposes of the manual motor starter. [0003] For example, if a remote switch trip device calle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/02H01H73/36H01H83/06H01H83/12H01H83/20
CPCH01H2071/0278H01H83/20H01H83/12H01H83/06
Inventor 金昊性
Owner LG IND SYST CO LTD
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