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[Knowledge] The trap of temperature rise

Date:2018-11-14   Click:43973  

Lately, regarding to fuses and fuse-switch-disconnectors, the most popular topic talked by customers is the temperature rise problem. So, here FRSI would like to share a little bit of experience about it. We hope that we can help you consider this issue from a more perspective view when choosing the product.


First, we need to know what is the most important role of the fuse and fuse-switch-disconnectors? Undoubtedly, it is overload protection and short circuit protection. What are the most important performance parameters for the fuse and fuse-switch-disconnectors? Yes, we think everyone knows, they are the temperature rise, Conventional fusing, Conventional non-fusing and breaking capacity. This is the fundamental premise to ensure the protection of the fuse and fuse-switch-disconnectors, and it is also a key factor that must be considered from the entire situation. It is meaningless to leave the demand of breaking capacity to talk about temperature rise; When the temperature rise is too high, even if the breaking capacity meets the requirements, the overall still cannot meet the requirements. Therefore, temperature rise, overload protection and short circuit protection must meet the standard requirements, otherwise the low temperature rise is also unqualified!


Due to the sealing of the JP cabinet, there is no good heat dissipation condition. In the high temperature environment, the temperature inside the box can reach 50 degrees, so the quality requirements for electrical components are very high. Although the tests for fuses and fuse-switch-disconnectors include test items such as limit breaking capacity, overload and temperature rise, in the test of JP cabinet and the combination of JP cabinet and transformer, only temperature rise is required, which makes many manufacturers of fuses and fuse-switch-disconnectors to sacrifice the breaking capacity for meeting the temperature rise requirements. This is not correct.


As a company, sales are important, but the premise is the guarantee of technology and quality. Even if the State Grid only requires the test of temperature rise, but as a professional component manufacturer, we must have a bottom line. We have to ask ourselves, if we lose the two most critical functions of fuse overload protection and short circuit protection, then what is the significance of the lower temperature rise?


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[Knowledge] The trap of temperature rise

Lately, regarding to fuses and fuse-switch-disconnectors, the most popular topic talked by customers is the temperature rise problem. So, here FRSI would like to share a little bit of experience about it.

[Knowledge] The trap of temperature rise