Installation requirements of the fuse

When installing the fuse, on the one hand, it is necessary to ensure sufficient electrical distance, on the other hand, it is necessary to ensure sufficient space spacing to ensure easy removal and replacement of the melt.

When installing the melt, you must ensure reliable contact, otherwise it will cause excessive contact resistance, heat or phase loss, causing the load to run in the phase loss state and burn the motor.

When installing the wire, there must be sufficient cross-sectional area, and the terminal screws must be tightened to avoid excessive contact resistance due to poor contact, which may cause the melt to melt prematurely and cause malfunctions.

When installing the melt, there must be no mechanical damage, otherwise, the cross-sectional area will be reduced, the resistance will increase, the heat will increase, the protection characteristics will decrease, and the action will be inaccurate.

Frequently remove dust from fuses and conductive sockets. Check the melt. If you find that the melt is oxidized, corroded or damaged, please replace it in time.

Remove and replace the de-energized fuse. It is allowed to replace some fuses with the power supply, but the load must be cut off to avoid danger.

When replacing the melt, it must be noted that the size and shape of the new melt should be the same as the original melt, and should not be replaced at will.

The melt of fast fuse can not be replaced by the melt of ordinary fuse.

The correct selection of the melt current can ensure the normal operation of electrical equipment, and the melt will not fuse when starting. In the event of a short-circuit fault, it will fuse in a short time and play a role of short-circuit protection.

For three-phase load circuits (such as motors), when replacing one-phase fuse, please check or replace the other two-phase fuse at the same time.

The above are the installation requirements of the fuse melt, and some precautions when installing the fuse, I hope it will be helpful to everyone.