Description: Determined integral of the sound power p over a specified time interval of duration t (starting at t1 and ending at t2); Name: Energy of sound
Description: determined integral of the sound power, p, over a stated time interval of duration t (starting at t1 and ending at t2); Name: sound energy
Description: Allocation of explosion-protected electrical operating media according to their maximum surface temperature for use in explosion-capable atmosphere in accordance with (IEC 50(426):1990; Name: Explosion protection temperature class of the electric motor