The problem of easy fusing of electric furnace wire of pit furnace

The problem of easy fusing of electric furnace wire of pit furnace

The upper area power cord is connected incorrectly, the current increases, the power is too high, and it burns.
2. The resistance wire is ironed with the muffle tank and melted locally.
3. The surface load of the resistance wire is too large.
4. The purchased resistance wire is a low-quality product. During the normal use of the electric furnace, due to the uneven density of the electric furnace wire, or the long-term fixed local overheating during use, local oxidation is caused, which increases the resistance of this part and brings local voltage drop. And the temperature further rises and enters a vicious circle. At the moment of fusing, the distance between the two ends of the electric furnace wire is relatively close after the fusing, and the conduction effect of the molten electric furnace wire oxide forms an electric arc. Temperature, melting part of the refractory bricks of the electric hob.

How to reduce the power of high-power heating wire by half

Connect a silicon rectifier diode with a withstand voltage greater than 500V and a current greater than 50A in series. Note that the diode should be equipped with a heat sink to achieve this effect;
2. Find another heating wire with the same specifications as the original high-power heating wire and connect it in series with the original heating wire to achieve this effect;
3. The solution is to adopt the two-way thyristor voltage regulation method, and display a voltmeter in the load.

Why is imported heating wire good

1. Imported heating wire has a higher efficiency of energy conversion heat energy than domestic heating wire.
2. Imported heating wire and domestic heating wire are used under the same specifications, and the service life of imported heating wire is 4-8 times that of domestic wire.
3. Imported heating wire has a higher surface load.
4. Imported electric heating wire has high resistivity.
5. Imported heating wire has lower density, saving material cost.

www.superbheater.com