At the same time, due to the numerical control equipment is using a three-phase ac 380 v power supply, so security is important part of nc equipment installation work, based on the above reasons, power over the use of numerical control equipment has the following requirements:
One, the grid voltage fluctuation should be controlled between + 10% -- - 15%, and the power fluctuation is bigger, the quality is poor, also hide like this kind of high frequency pulse interference, and human factors (such as sudden switch power, etc.). During peak hours, for example, one hour or so during the day or before the end of the workday is usually very poor, or even up to 20 percent. Make the machine tool alarm but not normal work, and cause damage to the machine power system. It even leads to loss of data about parameters. This phenomenon has occurred in the machine tool equipment such as CNC processing center or turning center, and the frequency is higher and should be taken seriously.