Multi-pole molded case circuit breaker with insulation barrier for rotary pin

一种断路器、旋转销的技术，应用在保护开关的零部件、电路、继电器等方向，能够解决电弧泄漏、介电击穿等问题，达到防止介电击穿、稳定支撑的效果

Active Publication Date: 2018-03-09
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the related art MCCB, when the breaking operation is performed, an arc with high temperature and high pressure may occur, and the arc may pass through an empty space between parts or be formed by the arc pressure generated during the breaking operation. The gap leaks and when this arc reaches the rotating pin 8 formed of steel, a dielectric breakdown phenomenon can occur

Method used

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  • Multi-pole molded case circuit breaker with insulation barrier for rotary pin
  • Multi-pole molded case circuit breaker with insulation barrier for rotary pin
  • Multi-pole molded case circuit breaker with insulation barrier for rotary pin

Examples

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Embodiment Construction

[0031] A detailed description of exemplary embodiments will now be provided with reference to the accompanying drawings. For the purpose of brief description with reference to the drawings, the same or equivalent components will be provided with the same reference numerals, and description thereof will not be repeated.

[0032] image 3 It is a perspective view of a base assembly and a switching mechanism in a multi-pole MCCB according to an embodiment of the present disclosure, wherein only the S-phase and T-phase single-pole disconnection units are shown among the three-phase single-pole disconnection units. Figure 4 yes image 3 An exploded perspective view of , showing all three-phase single-pole disconnect units. Figure 5 yes image 3 Side view of the switching mechanism unit. The lower part of the side panel is cut away. A multipole molded case circuit breaker (MCCB) having an insulating shield for a rotating pin according to an embodiment of the present disclosur...

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PUM

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Abstract

The invention provides a multi-pole molded case circuit breaker (MCCB) with an insulation barrier for a rotary pin, in which an insulation barrier is provided in a rotary pin for inter-phase power transmission to prevent dielectric breakdown. The multi-pole MCCB includes a shaft assembly having a movable contactor and having a plurality of rotary pin holes formed in a penetrating manner, a base assembly to which the shaft assembly is rotatably accommodated to be coupled, a switching mechanism coupled to an upper portion of the base assembly and rotating the shaft assembly, a plurality of rotary pins coupled to the plurality of rotary pin holes in a penetrating manner, and an insulation barrier formed of an insulating material and covering the plurality of rotary pins.

Description

technical field [0001] The present disclosure relates to multipole molded case circuit breakers (MCCBs), and in particular, to multipole MCCBs having insulating shields for rotating pins in which the insulating shields are disposed for phase-to-phase power transfer Thereby preventing dielectric breakdown phenomenon. Background technique [0002] Generally speaking, an MCCB is an electrical device for automatically opening a circuit to protect the circuit and the load in an electrical overload condition or in the event of a short circuit event. [0003] The MCCB includes: a terminal unit that can be connected to the power supply side or the load side; a contact unit that includes a fixed contact and a movable contact that is in contact with or separated from the fixed contact to connect or disconnect the circuit; a switching mechanism , which moves the movable contact to provide the required power for opening and closing the circuit; a trip unit, which senses the overcurrent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H71/1009H01H1/2058H01H9/48H01H71/0235H01H2050/028H01H71/082H01H71/1081H01H71/10
Inventor 吴敬焕
Owner LSIS CO LTD
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