Mechanical vibration — Vibration of rotating machinery equipped with active magnetic bearings — Part 2: Evaluation of vibration

ISO 14839-2:2004 sets out general guidelines for measuring and evaluating rotating machinery equipped with active magnetic bearings (AMBs) with respect to the following two indices: shaft vibratory displacement measured at or close to the AMBs; and working current and voltage measured in magnetic coils or power supply amplifiers. Both indices are measured under nominal operating conditions in house and/or on site. These guidelines are presented in terms of both steady-state running values of these indices and any magnitude changes which may occur in these steady-state operations. ISO 14839-2:2004 is applicable to industrial rotating machines generating or consuming nominal power greater than 15 kW, and is not limited by size or operational rated speed (i.e. comprising turbo-compressors, turbo-pumps, steam turbines, turbo-generators, turbo-fans, electric drives and other rotors supported by AMBs). It establishes the vibration, current and voltage evaluation of the rotating machinery equipped with AMBs, specified by a comparatively large power capacity as described above, excluding small-scale rotors such as turbo-molecular pumps, spindles and flywheels. ISO 14839-2:2004 covers both AMB-equipped rigid rotors and AMB-equipped flexible rotors.

Vibrations mécaniques — Vibrations de machines rotatives équipées de paliers magnétiques actifs — Partie 2: Évaluation des vibrations

General Information

Status

Published

Publication Date

12-Sep-2004

ICS

17.160 - Vibrations, shock and vibration measurements

Technical Committee

ISO/TC 108/SC 2 - Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures

Drafting Committee

ISO/TC 108/SC 2/WG 7 - Vibration of machines with active magnetic bearings

Current Stage

9020 - International Standard under periodical review

Start Date

15-Jan-2024

Completion Date

15-Jan-2024

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ISO 14839-2:2004 - Mechanical vibration -- Vibration of rotating machinery equipped with active magnetic bearings

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ISO 14839-2:2004 - Mechanical ...

INTERNATIONAL ISO
STANDARD 14839-2
First edition
2004-09-01
Mechanical vibration — Vibration of
rotating machinery equipped with active
magnetic bearings —
Part 2:
Evaluation of vibration
Vibrations mécaniques — Vibrations de machines rotatives équipées de
paliers magnétiques actifs —
Partie 2: Évaluation des vibrations

Reference number
ISO 14839-2:2004(E)
©
ISO 2004

---------------------- Page: 1 ----------------------
ISO 14839-2:2004(E)
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ii ISO 2004 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 14839-2:2004(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Measurement and evaluation procedures . 1
4 Evaluation criteria . 6
Annex A (informative) Case study on an LP centrifugal compressor equipped with active magnetic
bearings (AMBs) . 8
Annex B (informative) Case study on current evaluation . 14
Annex C (informative) Voltage saturation . 17
Bibliography . 20
©
ISO 2004 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 14839-2:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO14839-2 was prepared by Technical Committee ISO/TC108, Mechanical vibration and shock,
Subcommittee SC 2, Measurement and evaluation of mechanical vibration and shock as applied to machines,
vehicles and structures.
ISO 14839 consists of the following parts, under the general title Mechanical vibration — Vibration of rotating
machinery equippe
...

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