Minitype breaker capable of indicating operating status employing lamplight

Abstract

The invention relates to a miniature circuit breaker adopting light to indicate working status, which consists of a circuit breaker body and a working status indicator, wherein the circuit breaker body consists of an inner working cavity and a shell; the working status indicator is positioned in a cavity of the circuit breaker body and is an electrical display circuit consisting of electrical luminous indicators connected in series, a current-limiting resistor and lead wires led out at two ends; the lead wires led out at two ends are in bridge connection with outlet terminals of the circuit breaker or any two conducting strips of an arc extinguish chamber between the terminals; the shell is a transparent structural member or an opaque structural member which is arranged above or below an operating handle and provided with transmittance holes on a main working surface; the electrical luminous indicators can be energy-saving neon lights or LED light emitting diodes; despite ambient light, the on / off of the indicators can be observed through the transmittance holes on the working panel or the transparent shell, so that the definite working status of the circuit breaker can be quickly, accurately and reliably, the remote management, monitoring and safety maintenance are convenient, and the miniature circuit breaker has strong practicability.

Description

technical field [0001] The invention relates to the technical field of relay protection, in particular to a miniature circuit breaker which uses light to indicate the working state. Background technique [0002] The relay protection device is an important protection device developed to meet the requirements of safe operation of the power system, and it is closely related to the continuous improvement of the power system's requirements for operational reliability. Among them, the fuse is a simple overcurrent protection device that appeared earlier. Because of its simple structure and practicality, it is still widely used in the protection of low-voltage lines and electrical equipment that do not require high rapid recovery of power supply. Since the fuse cuts off the working power by melting the fuse, it is time-consuming to manually replace the fuse after each over-current protection task is performed, so it cannot meet the rapid recovery requirements of some power-consuming...

AI Technical Summary

Problems solved by technology

The currently popular miniature circuit breaker is a miniature terminal protection device that is directly oriented to terminal electrical equipment that has come out in recent years. It has the characteristics of compact structure and small size, and is especially suitable for home use. not obvious

At present, the method of setting the indicator light on the cover plate of the shell used in the ordinary low-voltage circuit breaker, because there must be a wire interconnection between the indicator light and the conductive plate of the internal switch, but the internal space of the miniature circuit breaker is extremely limited and compact, and the internal The structure of the switch is special, and it is difficult to bear the doping of wires with uncertain displacement characteristics, otherwise it will affect the reliability of the work, so this method cannot be implemented on the miniature circuit breaker, so in the working state of the miniature circuit breaker There is no precedent for the use of indicator lights in the display

At present, it is generally used to set a red and green color indicator driven by the operating handle above or below the operating handle to display the observation window of the closing and opening state of the circuit breaker, which solves the judgment of the working state of the circuit breaker to a certain extent. However, because the window is small and the logo is not eye-catching, especially in a poorly lit or dark working environment, it is difficult to accurately judge the working status of the circuit breaker and the exact position of the handle, so misjudgment is extremely easy to occur and misuse, causing unimaginable safety accidents and economic losses

Therefore, the working state display signs of the existing structural form miniature circuit breakers are not ideal, and the exact working state of the circuit breaker and the electrified status of the electrical equipment cannot be quickly and accurately judged, so it cannot meet the requirements of the power industry for relay protection. Among the four basic requirements of intuitiveness, sensitivity, selectivity and reliability, it is necessary to improve the structure and function of the fast intuitiveness and reliability requirements to ensure the safety of electricity use and operation

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