Overheating protection circuit for power distribution cabinet

A technology for overheating protection circuits and power distribution cabinets, applied in emergency protection circuit devices, automatic disconnection emergency protection devices, circuit devices, etc. To achieve the effect of reducing losses, improving performance and longevity

Inactive Publication Date: 2017-04-26
ANHUI QUEUE ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the power distribution cabinet is working, if the temperature is too high, it will damage the electrical components and li

Method used

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  • Overheating protection circuit for power distribution cabinet
  • Overheating protection circuit for power distribution cabinet

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[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] See Figure 1-2 , The present invention provides a technical solution:

[0025] An overheat protection circuit for power distribution cabinets, including a temperature sampling detection circuit 100, a self-locking circuit 200, an execution circuit 300 and an alarm circuit 400;

[0026] Temperature sampling detection circuit 100, self-locking circuit 200, execution circuit 300 and alarm circuit 400;

[0027] The temperature sampling d...

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Abstract

The invention belongs to the technical field of a protection circuit and particularly relates to an overheating protection circuit for a power distribution cabinet. Connection with an output end of a power supply and an input end of electronic equipment is respectively carried out, the overheating protection circuit for the power distribution cabinet comprises a temperature sampling detection circuit, a self-locking circuit, an actuating circuit and an alarm circuit. According to the overheating protection circuit for the power distribution cabinet, when temperature of the power distribution cabinet rises, target temperature is sampled through the temperature sampling detection circuit, if the sampled temperature is higher than preset temperature, a triggering signal is generated, the triggering signal is maintained through the self-locking circuit, the triggering signal is received through the actuating circuit, supply of the power supply for the electronic equipment is cut off, and the alarm circuit is used for prompting a user to know about being in a present fault state. Through the overheating protection circuit, performance and service life of the power distribution cabinet are improved, and loss of a user is reduced.

Description

technical field [0001] The invention relates to the technical field of protection circuits, in particular to an overheat protection circuit for a power distribution cabinet. Background technique [0002] The power distribution cabinet (box) is divided into power distribution cabinet (box), lighting distribution cabinet (box), metering cabinet (box), and is the final equipment of the power distribution system. The power distribution cabinet is a general term for the motor control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits; the motor control center is used in the occasions where the load is concentrated and there are many circuits. They distribute the electric energy of a certain circuit of the upper-level power distribution equipment to the nearest load. This level of equipment shall provide protection, monitoring and control of the load. [0003] However, when the power distribution cab...

Claims

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Application Information

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IPC IPC(8): H02H5/04
CPCH02H5/04
Inventor 石敏王建舒志贤闵文杰侯金华郭玉文
Owner ANHUI QUEUE ELECTRIC
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