KSB Centrifugal Pump Lexicon –

From A to Z

Nominal speed

Nominal speed (nN) is a suitable, rounded speed value for classifying the speed range (see Nominal value). Nominal speed is no longer the speed previously agreed on in the supply contract, but typically a deviating, rounded, and generally applicable speed such as 2.900, 1.450, or 980 min–1 (rpm) for a mains frequency of 50 Hz or 3.500, 1.750, 1.180 min–1 (rpm) at 60 Hz.

  

  

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