What is the reason for the large current fluctuation in the upper section of the heat treatment elec

The main reason is because some of the resistors are damaged, in which case, it is very likely that the resistors will be damaged, and then the power will fluctuate a little bit in it.

:1 Check whether the wiring is correct, such as the corner connection and the star connection are not the same. 2. Check whether the wiring is reliable, if the wiring is not reliable, it will cause the current to become larger. 3. Check whether the replacement electric furnace wire resistor is.

1. The shell of the box-type heat treatment electric furnace is made of high-quality cold-rolled steel plate, and the surface is treated by plastic spraying technology, and the furnace door is made of side-opening layout, which is sensitive to opening and closing.

2. The medium-temperature chamber furnace is a closed furnace, which is made into a spiral shape with electric heating alloy wire as the heating element, which surrounds the four walls of the furnace, and the furnace temperature is uniform during heat dissipation to prolong the service life.

3. The high-temperature tubular resistance furnace uses a high-temperature combustion tube, and the silicon carbon rod is used as the heating element in the furnace jacket.

4. The high-temperature box-type resistance furnace uses silicon carbon rod as the heating element, which is directly installed in the furnace, and the heat utilization rate is high.

5. The insulation materials of this series of resistance furnaces are made of lightweight foam insulation bricks and aluminum silicate fiber cotton, which reduces the heat storage and thermal conductivity, resulting in the shortening of the heating time of the furnace heat storage, the low surface temperature rise, the small loss rate of the empty furnace, and the power consumption is also greatly reduced.

6. The controller is divided into: pointer type, digital display type, and microcomputer multi-band.

In this case, it is likely that due to the influence of temperature and humidity, there will be some fluctuations in resistance, so in this case, there will be such a phenomenon at all.

The current fluctuation in the upper section of the heat treatment electric furnace must be due to the unstable output power.

What is the reason for the large fluctuation of the upper interrupting current of the heat treatment electric furnace? There are many reasons for this.

The current fluctuates greatly, 1The load is unstable, such as the pulverizer is easy to overload. 2.Bad bearings. or from a mechanical part. 3.The voltage is unstable. 4.There is a loosening of the wire end in the circuit.

The main reasons for the large fluctuation of motor current are as follows:

1. Multiple roots of the motor squirrel cage strip are broken.

2. The motor load fluctuates frequently.

3. There is a phenomenon of poor contact discharge in the motor binding post or lead.

4. Poor contact of current detection loop.

A sudden increase in the current of the motor indicates a sudden increase in its load. Please check if there is a malfunction in the mechanical part, which increases the resistance to the rotation of the mechanical part.

If the load is okay, the air switch is small. Select the air switch to filter the starting current

Selection of air switches:

When controlling the motor, the setting current of the thermal tripper should be equal to the rated current of the load; The instantaneous tripping setting current of the electromagnetic tripper should be greater than the peak current when the load is working normally; When protecting the motor, the instantaneous tripping setting current of the electromagnetic tripper is several times of the starting current of the motor.

Reasons for the sudden tripping of the electric furnace in normal use are possible

1. The switch may be broken;

2. The electric furnace may be leaking;

3. It may cause a short circuit after the furnace wire is burned.

When the electric furnace is heating, it will start to alarm and trip when it has not reached the set temperature, which may be due to the following reasons:

1. Take a look at the temperature control table first, where the other setting values must be zero, only zero is normal.

2. Take a look at the setting value, whether it is accidentally set wrong when setting.

3. Check ALM1, this is the upper limit alarm data, see how much, under normal circumstances, the alarm data is slightly more than the temperature we set, that is, the correct digital temperature of the electric furnace plus the temperature of ALM1, the total temperature exceeds our set temperature a little bit, this is the role of ALM1.

In general, there are two points that can be roughly started, the first is to check the probe, that is, the thermocouple; Second, check whether the furnace temperature controller is working properly.

FYI, thanks!

It's broken. Get a professional to fix it. It can only be put into use after finding out the cause and overhauling.