What does this research mean for the field?

Preferential melting of individual fuse elements causes discrete step-like increases in cold resistance, which can be detected online using non-contact current-rate sensing to provide early warning of fuse degradation. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine the degradation and blowout mechanism of medium-voltage motor fuses under repetitive current impacts and establish an online, non-contact condition assessment method.

August 22, 2026IEEJ Transactions on Electrical and Electronic Engineering

Analysis of the Blowout Mechanism of Current‐Limiting Fuses and Non‐Contact Sensing Evaluation Methods

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Authors

WJWentao JiangTiangong University WLWanqing LuoFord Motor Company (United States)SPSun PengqingTiangong University

Discussion

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Implication

Experimental investigation demonstrates non-contact degradation assessment in medium-voltage current-limiting fuses, enabling early blowout detection without power interruption.

Key Points

To determine the degradation and blowout mechanism of medium-voltage motor fuses under repetitive current impacts and establish an online, non-contact condition assessment method.
Built a current stress test platform to apply simulated high-current impact tests on 7.2 kV/160 A current-limiting fuses.
Developed an online non-contact monitoring system combining current-rate sensing, temperature compensation, and a statistical step-judgment algorithm based on equivalent internal resistance.
Prolonged current surges caused discrete, irreversible step increases in cold resistance, driven by the sequential preferential melting of individual parallel fuse elements.
The monitoring device detected a characteristic step drop in the current-rate metric during the 351st impulse test, accurately matching the resistance increase and signaling single-element failure.

Cite This Study

Jiang et al. (2026) studied this question.

synapsesocial.com/papers/6a895fc4ca7ade938187ea5a https://doi.org/10.1002/tee.70391

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Implication

Experimental investigation demonstrates non-contact degradation assessment in medium-voltage current-limiting fuses, enabling early blowout detection without power interruption.

Analysis of the Blowout Mechanism of Current‐Limiting Fuses and Non‐Contact Sensing Evaluation Methods

Discussion

Member takes

Implication

Key Points

Cite This Study

Analysis of the Blowout Mechanism of Current‐Limiting Fuses and Non‐Contact Sensing Evaluation Methods

Discussion

Member takes

Implication

Key Points

Cite This Study

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