Drop-out Fuses Mechanical Assembly Specifications
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The contact pressure between the drop out fuse fuse tube and the contactor must be controlled within the range of 120-150N. Tighten the terminal bolts to 25N·m using a torque wrench. The contact resistance should be <50μΩ to avoid overheating or electrical faults due to poor contact. After installation, three no-load opening and closing tests must be performed to ensure smooth operation of the mechanism without any jamming, thus verifying its smooth operation.
