Intelligent type test system for service life of fuses

A life test, fuse technology, applied in the direction of circuit breaker testing, etc., can solve problems such as safety and hidden dangers, and achieve the effect of ensuring uninterrupted

Inactive Publication Date: 2010-08-04
SUZHOU NUCLEAR POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the fuse reaches the normal aging state, if it

Method used

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  • Intelligent type test system for service life of fuses
  • Intelligent type test system for service life of fuses

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Embodiment Construction

[0019] Preferred embodiments of the present invention will be described in detail below in conjunction with accompanying drawings:

[0020] The test system provided by the present invention is mainly used to provide a test environment for the life evaluation of the fuse. During the test, a plurality of fuses can be extracted, and the plurality of fuses are connected in series in turn to form a fuse group 10 under test. The fuse set 10 under test is fixed on an insulation test board, so that the test system is used to energize the fuse set 10 and monitor and record the on-off status of each fuse, which can provide data reference for subsequent fuse evaluation and analysis.

[0021] The specific realization principle of the test system of the present invention is as follows: figure 1 As shown, its core includes a central control unit 1, a constant current source 2 for providing test current for the fuse, a sampling unit 5 for feeding back the output of the constant current sourc...

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PUM

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Abstract

The invention relates to an intelligent type test system for the service life of fuses, which comprises a central control unit, a programmable constant-current source, a monitoring and isolating module and an execution unit, wherein the programmable constant-current source is connected between one output end of the central control unit and a fuse group in series, the monitoring and isolating module is electrically connected between the input end of the central control unit and each fuse, and the execution unit is electrically connected between the output end of the central control unit and each fuse and used for receiving a signal of the central control unit to short-circuit the corresponding disconnected fuses so as to restore the power supply of other fuses. By the test system, real-time monitoring can be carried out on the on-off states of the fuses. After a certain fuse is fused, the fuse is automatically short-circuited, so that the power supply of other fuse samples is automatically restored, and no interruption of the electrification time of the fuses is ensured. Meanwhile, the output test current of the constant-current source can be accurately controlled, and a firm test basis is established for the evaluation accuracy of the service life of the fuses.

Description

technical field [0001] The invention relates to a fuse performance detection device, in particular to a fuse life detection test system. Background technique [0002] A fuse is an overcurrent protection device. When in use, connect the fuse in series in the protected circuit. When the current of the protected circuit exceeds the specified value, and after a certain period of time, the heat generated by the melt itself will fuse the fuse, disconnect the circuit, and play a protective role. . Fuses are widely used in low-voltage power distribution systems, control systems, and electrical equipment. As short-circuit and over-current protection, fuses are one of the most commonly used protection devices. [0003] During the use of the fuse, due to the current flowing through itself and the influence of the external environment, it will inevitably undergo aging degradation, which will change the protection characteristic curve of the fuse and affect its service life. [0004] ...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 姚建林石颉施海宁金心明李建文
Owner SUZHOU NUCLEAR POWER RES INST
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