Note – The deviation is expressed in percentage, regarded either as positive (+) when the measured speed is higher than the rated speed, or as negative (-) when it is lower. It is given by:
mean measured speed−rated speed rated speed ×100 % MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdi9qqqj=hEeeu0lXdbb a9frFj0xb9Lqpepeea0xd9s8qiYRWxGi6xij=hbba9q8aq0=yq=He9 q8qiLsFr0=vr0=vr0db8meaabaGacmGadiWaaiWabaabaiaafaaake aadaWcaaqaaiaab2gacaqGLbGaaeyyaiaab6gacaaMe8UaaeyBaiaa bwgacaqGHbGaae4CaiaabwhacaqGYbGaaeyzaiaabsgacaaMe8Uaae 4CaiaabchacaqGLbGaaeyzaiaabsgacqGHsislcaqGYbGaaeyyaiaa bshacaqGLbGaaeizaiaaysW7caqGZbGaaeiCaiaabwgacaqGLbGaae izaaqaaiaabkhacaqGHbGaaeiDaiaabwgacaqGKbGaaGjbVlaaboha caqGWbGaaeyzaiaabwgacaqGKbaaaiabgEna0kaaigdacaaIWaGaaG imaiaaysW7caGGLaaaaa@6973@
Note – L'écart est exprimé en pourcentage, affecté du signe (+) ou du signe (-) selon que la vitesse réelle est supérieure ou inférieure à la vitesse nominale. Il est donné par l'expression:
vitesse moyenne réelle−vitesse nominale vitesse nominale ×100 % MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdi9qqqj=hEeeu0lXdbb a9frFj0xb9Lqpepeea0xd9s8qiYRWxGi6xij=hbba9q8aq0=yq=He9 q8qiLsFr0=vr0=vr0db8meaabaGacmGadiWaaiWabaabaiaafaaake aadaWcaaqaaiaabAhacaqGPbGaaeiDaiaabwgacaqGZbGaae4Caiaa bwgacaaMe8UaaeyBaiaab+gacaqG5bGaaeyzaiaab6gacaqGUbGaae yzaiaaysW7caqGYbGaaey6aiaabwgacaqGSbGaaeiBaiaabwgacqGH sislcaqG2bGaaeyAaiaabshacaqGLbGaae4CaiaabohacaqGLbGaaG jbVlaab6gacaqGVbGaaeyBaiaabMgacaqGUbGaaeyyaiaabYgacaqG LbaabaGaaeODaiaabMgacaqG0bGaaeyzaiaabohacaqGZbGaaeyzai aaysW7caqGUbGaae4Baiaab2gacaqGPbGaaeOBaiaabggacaqGSbGa aeyzaaaacqGHxdaTcaaIXaGaaGimaiaaicdacaaMe8Uaaiyjaaaa@7677@