u/Equivalent-Oil9441

I am performing vibration analysis on a horizontal single-stage, single-suction centrifugal pump driven by a 1.5 kW, 50 Hz induction motor operating at about 1400 r/min.

I am confused about which ISO vibration standard should properly apply to this machine set.

• ISO 20816-3 appears to apply only to machines above 15 kW.
• ISO 10816-7 includes pump categories below 200 kW.

Would my pump-motor set fall under ISO 10816-7 despite the low motor power? If 20816-3 wont apply to motors less than 1.5 kw, then would i consider motor and pump seperately, or evaluate the system as a whole using 20816-1?