How to Install and Operate Dropout Fuse Cutout

1/6 Operation method

The installation of drop-out fuse should meet the following requirements Before installation, check to confirm the gap between the melt tube and the insulating support. The matching size meets the requirements of the instruction manual to ensure sufficient Enough contact pressure. In addition, it should be confirmed that the melt has been tightened to prevent the contacts from overheating.

2/6

It should not be installed vertically or horizontally, but should make the axis of molten pipe and plumb line into a Angle of 30 to ensure that the molten pipe can fall by its own weight when the melt fuse is broken

3/6

Should not be installed above the transformer and other equipment to prevent other accidents caused by the fall of the fuse

The horizontal distance of the profile of the protected equipment shall not be less than 0.5

4/6
An adequate safety distance should be maintained. When the voltage is 6~10 kV, the distance between the fuse-links installed outdoors should not be less than 70 mm; the fuse installed indoors
The distance between the interrupters should not be less than 60 mm. The distance of the fuse to the ground, outdoor one
Generally .5 meters, indoor is 3.0 meters
It must be pointed out that a large amount of free gas will be ejected when the drop-out fuse is extinguished
And it makes a lot of noise, so this type of fuse is generally only installed in the outdoor operation drop-out fuse should pay attention to the following matters

5/6

In general, it is not allowed to operate with a load, but for distribution transformers with a capacity of kv · a and below, the high voltage side of the fuse is allowed

If the split load current exceeds this capacity, the arc is divided and combined

Much can be

It can cause short circuit on the high voltage side, so the load should be cut off first and then the drop fuse should be operated

To ensure safety and prevent accidents.

6/6

During the splitting operation, the middle phase should be first pulled and then the wind phase should be pulled down. Finally, the remaining phase should be pulled in the reverse order, that is, the wind phase should be pushed up first and the middle phase should be pushed up last.

For.When operating, do not exert too much force to avoid damage to the fuse, the operator should wear

Edge gloves and goggles for safety