Current overload and short circuit damage demonstration instrument

Abstract

The invention provides a current overload and short circuit damage demonstration instrument and belongs to a demonstration instrument. The current overload and short circuit damage demonstration instrument comprises a short circuit demonstration unit, an overload demonstration unit, an adjuster and a selector and can demonstrate the process of causing damage during short out and circuit overload.The selector is used for selecting from the short circuit demonstration unit and the overload demonstration unit to be connected with a power source to enter a working state, and the adjuster is usedfor adjusting voltage or current input into the short circuit demonstration unit or the overload demonstration unit. Therefore, circuit overload or intensity of circuit short-out voltage and degree and duration of lead burning are controlled, a watcher is promoted to carefully observe and understand the process of causing damage by circuit short-out and to understand importance of safety utilization of electric power.

Description

technical field [0001] The invention relates to a demonstration instrument, in particular to a current overload and short circuit hazard demonstration instrument. Background technique [0002] In the process of learning and publicizing electricity safety, the existing circuit short circuit or overload demonstration device is usually demonstrated with a fuse function demonstrator. During the demonstration, the moment the switch is closed, the wire will immediately burn, which is not conducive to the visitor's careful attention. The process of observing and understanding the hazards caused by short circuits cannot impress visitors deeply. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a current overload and short-circuit hazard demonstration instrument, which can control the intensity of circuit overload or short-circuit voltage and the degree and duration of wire burnout, which is beneficia...

AI Technical Summary

Problems solved by technology

[0002] In the process of learning and publicizing electricity safety, the existing circuit short circuit or overload demonstration device is usually demonstrated with a fuse action demonstrator. During the demonstration, the moment the switch is closed, the wire will immediately burn, which is not conducive to the visitor's careful attention. The process of observing and understanding the hazards caused by short circuits cannot impress the visitors deeply

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