Choosing of asynchronous motor protection equipment in production environment

Abstract

As known [1], the electric network mode parameters often do not meet the requirements of GOST 32144-2013 in Russia, of GOST 13109-97 in Ukraine and the guidelines No.39/2015/TT-BCT and No.25/2016/TT-BCT in Vietnam. In real operating conditions, there is very often a non-sinusoidal mode in electrical networks, the consequences of which are voltage and current harmonics. The problem of the presence of low-quality electricity in electrical networks is described in the article [2]. The problem of the negative influence of voltage and current harmonics on electrical equipment, on the efficiency of electric energy use, has recently been increasingly represented in international publications and conferences. Even in the countries of Southeast Asia, scientists pay attention to this problem. In paper [3] the authors note that, the parameters of electrical network modes do not meet the requirements of Russian GOST 32144-2013 and the guidelines of Vietnam.