Enery & utility_130618_Data sheet HGC 2-12

1. Explanations
DE vert.
NDE vert.
DE horiz.
axial
NDE horiz.
KSB’s HG pumps are designed for compliance with the vibration velocity limits according to nach DIN ISO 10816-7, category I. These are
determined as overall root-mean-square values v eff [mm/s] in the frequency range of 10 – 1000 Hz.
The permissible root-mean-square value of the vibration velocity is determined by the type of assembly and the evaluation zone B.
The following applies to HG pumps, all values in mm/s
Preferred operating range
Permitted operating range
200 kW / 268 hp 200 kW / 268 hp
Site of installation 2,5 3,5 4,0 5,0
Acceptance test in KSB test bed 3,3 4,3 4,0 5,0
The measurement points are schematically represented in the figure above.
NDE: Non Drive End DE: Drive End
2. Prerequisites
The above-mentioned vibration velocity values shall apply under the following conditions:
1. Measurement of vibrations in steady-state operation at nominal speed or within the specified speed range (not under transient
operating conditions, not with changing speeds or loads).
Measurement at nominal flow rate or in the preferred operating range of between 0.7 .... 1.2 x Q opt (extreme part load or overload as
well as operation at cavitation are excluded), permitted operating range is defined as 0,5 .... 1.25 x Q opt .
2. The measurements are performed at the positions indicated using vibration velocity sensors. Only measuring instruments that were
calibrated within the framework of the applicable quality assurance system are used.
3. Measurement of vibration velocity in the installation/plant:
For operation in the installation/plant, the machine has to be installed in compliance with the instruction manual.