Overcurrent, overvoltage
Thread Content
Could that expert please explain the essential difference between overcurrent and overvoltage, and what are the main causes of them?
I’m not an expert; let’s discuss this together: currently, furnaces are generally controlled by electric current for growth. In other words, the current per hour is predetermined by you in advance. If the current applied is too high, or if the amount of material fed in is insufficient, causing the temperature of the rod to rise too much, the rod will melt; this should be considered an overcurrent condition. Also, overcurrent can occur when the two sets of rods come into contact with each other. As the rice stalks grow further, cracks appear, which increases their electrical resistance. Since the current remains constant, the voltage rises, resulting in overvoltage. In fact, it is these factors that ultimately lead to overpowering, causing the electrical cabinet to shut down urgently and resulting in a shutdown of the system.
In most reduction furnaces, the growth rate is automatically controlled by temperature; setting a current application curve in advance and applying current blindly, without considering the actual conditions of the reduction furnace, is not a viable approach. As for overvoltage and overcurrent, a U-I curve is provided when purchasing the equipment; take a look at it and you’ll understand