Description: mathematical expectation of the operating time between failures; Name: mtbf
Description: expectation of the operating time between failures; Name: mean time between failures (MTBF)
Description: The EU directive 2014/34 (ATEX) classifies explosion-proof devices into categories in Europe. At the international level, there was introduced the EPL (Equipment Protection Level); Name: Explosion protection Equipment Protection Level (EPL) of the electric motor