【Daily Question 20090206】What is the term used to describe the rapid decrease in voltage of an AC welding machine?
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【Daily Question 20090206】What do we generally call the phenomenon in a welding machine where the current increases while the voltage drops rapidly? Summary: Sometimes we refer to it as the excavator characteristic. This post was last edited by lihy on 2009-2-12 20:43]
The phenomenon in which the current of a welding machine increases while the voltage drops rapidly is generally referred to as the droop characteristic
The external characteristic in which the output voltage of a welding machine drops rapidly as the output current increases is known as a steep drop characteristic
This is generally referred to as the droop characteristic. Welding transformers have a specific feature, namely a tendency for the voltage to drop sharply. The voltage drops after the welding rod is ignited ； When the welding electrode sticks together and causes a short circuit, the voltage also drops sharply. The reason for this phenomenon is due to the characteristics of the core of the welding transformer
Welding transformers have their own characteristic, namely a sharp drop in voltage. The voltage drops after the welding rod is ignited ； When the welding electrode sticks together and causes a short circuit, the voltage also drops sharply. This phenomenon is known as the droop characteristic, and it is caused by the characteristics of the core of the welding transformer
A welding machine is the power source for the arc; it must meet the requirements for initiating the arc, ensure stable arc combustion, and allow for easy adjustment of the current level. The relationship between the output voltage and current of a power supply is called the “external characteristic”. The external characteristic curve of the welding machine is of the steep-drop type; that is, when the current is zero, the no-load voltage is 60–80 V. As soon as an arc is established and current flows, the voltage drops rapidly. By altering the shape of the external characteristic curve of the welding machine, it is possible to adjust the welding current. To meet the requirements of welding workpieces of different thicknesses and materials.
This phenomenon is known as the steep drop characteristic or decline characteristic.
Answer: It is generally referred to as the droop characteristic.