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Testo: <blockquote data-quote="malfe" data-source="post: 527374" data-attributes="member: 29">la norma 15194 dice questo  ..... 4.2.14 Maximum power measurement4.2.14.1 Measurement at the engine shaft The maximum continuous rated power shall be measured according to EN 60034-1 when the motor reaches its thermal equilibrium as specified by the manufacturer.NOTE Thermal equilibrium: temperatures of motor parts do not vary more than 2K per hour.In circumstance where the power is measured directly at the shaft of the electronic motor, the result of the measurement shall be divided by 1,10 to consider the measurement uncertainty and then divided by 1,05 to include for example the transmission losses, unless the real values of these losses are determined.</blockquote>