Detailed explanation of installation process of drop fuse
Release time:
2019-06-25
The drop fuse can play a protective role in the event of a short circuit condition. It is not only economical and applicable, easy to operate, but also has a good ability to adapt to the outdoor environment. There are some details that need to be paid attention to during the installation of the drop fuse. The following Best will introduce you.
Drop-out fuses can play a protective role in the event of a short circuit condition. It is not only economical and applicable, easy to operate, but also has a good ability to adapt to the outdoor environment. Drop fuse in the installation process there are some details need to pay attention to, the following best for you to introduce.
During the installation of the drop fuse, the matters needing attention are as follows: 1. During the installation process, in order to avoid the heating of the contact, the melt should be tightened. 2. Ensure that the fuse is installed firmly and reliably to avoid shaking. 3. The melting pipe should have a downward inclination of 25 ° ± 2 °, so that the melting pipe can fall quickly by its own weight when the melt is melted. 4. The fuse should be installed on a crossarm with a vertical distance of not less than 4m from the ground. If it is installed above the distribution transformer, it should keep a horizontal distance of more than 0.5m from the outermost contour boundary of the distribution transformer to prevent other accidents caused by the fall of the melting pipe. 5. The length of the melting pipe should be adjusted moderately. It is required that the duckbill tongue can buckle more than 2/3 of the contact length after closing, so as to avoid misoperation of falling by itself during operation. The melting pipe cannot top the duckbill to prevent the melting pipe from falling in time after melting. 6, should pay attention to ensure the normal and standard of the melt, and has good mechanical strength. Generally, the melt is required to withstand at least 147N above the tensile force. 7. If the 10kV drop-out fuse is installed outdoors, the phase-to-phase distance is required to be greater than 70cm.
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