Intelligent magnetic control low-voltage switch device

Abstract

An intelligent magnetic control low-voltage switch device comprises a magnetic control type primary module and a blade type secondary module. The magnetic control type primary module comprises a first bottom shell, a first top shell, a plastic shell baffle plate and a bottom flitch plate, and the first bottom shell, the first top shell, the plastic shell baffle plate and the bottom flitch plate form a whole shell frame; automatic opening and closing can be achieved under the size requirement of an original manual molded case circuit breaker, an existing old switch in a transformer area is directly replaced, the opening and closing speed is greatly increased, the mechanical performance is improved, the space capacity of a secondary control module is effectively increased, high intelligence, primary and secondary overall modular design and secondary module heat insulation design are achieved, and the cost is reduced. The secondary control module can be plugged, the secondary module can be replaced without power cut, the operation and maintenance capability of the product is improved, the service life of the primary module and the secondary module is the same, the service life of the device is greatly prolonged, secondary vulnerable components can be plugged independently, the flexibility of the device is improved, and high scientificity and logicality are achieved.

Description

technical field [0001] The invention relates to the technical field of substation management and control, in particular to an intelligent magnetically controlled low-voltage switchgear. Background technique [0002] Molded case circuit breakers are widely used in distribution networks, photovoltaics, new energy vehicle charging piles, and electrical complete sets. The low-voltage molded case circuit breaker is an important part of the distribution network. The operating mechanism of the existing molded case circuit breaker is spring type, with a large number of parts, complex structure, easy wear and low service life, and the traditional molded case circuit breaker is intelligent. Low level of automation, manual operation, slow response, high failure rate. The operating mechanism of the existing molded case circuit breaker is spring type, and the 3P form is manual opening and closing. Under the condition of relatively large rated current, such as above 400A, it is necessary...

AI Technical Summary

Problems solved by technology

The primary system and secondary control system of the existing molded case circuit breaker are integrated, which cannot be modularized, and the live pluggable replacement of the secondary control system cannot be realized, and the life of the primary and secondary control systems cannot be synchronized. When it can still work normally, the secondary control system has been aged and damaged, causing the entire circuit breaker to be scrapped, resulting in waste

The traditional molded case circuit breaker control circuit board is not completely isolated from the primary part, and the heat insulation performance is poor. The temperature of the primary part is high when it is working, and the heat will be transferred to the secondary part, which will accelerate the aging of the secondary part.

The spring-type operating mechanism has a complex structure and is easy to wear. The mechanical life is about 20,000 to 50,000 times.

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