SIST ISO 8528-9:2002
(Main)Reciprocating internal combustion engine driven alternating current generating sets -- Part 9: Measurement and evaluation of mechanical vibrations
Reciprocating internal combustion engine driven alternating current generating sets -- Part 9: Measurement and evaluation of mechanical vibrations
This part of ISO 8528 describes a procedure for
measuring and evaluating the external mechanical vibration
behaviour of generating sets at the measuring
Points stated in that International Standard.
lt applies to RIC engine driven AC generating sets for
fixed and mobile installations with rigid and/or resilient
mountings. lt is applicable for land and marine use,
excluding generating sets used on aircraft or those
used to propel land vehicles and locomotives.
For some specific applications (essential hospital
supplies, high rise buildings, etc.) supplementary requirements
may be necessary. The provisions of this
part of ISO 8528 should be regarded as a basis.
For generating sets driven by other reciprocating-type
Prime movers (e.g. sewage gas engines, steam engines),
the provisions of this part of ISO 8528 should
be regarded as a basis.
Groupes électrogènes à courant alternatif entraînés par moteurs alternatifs à combustion interne -- Partie 9: Mesurage et évaluation des vibrations mécaniques
Agregati za proizvodnjo izmeničnega toka, gnani z batnim motorjem z notranjim zgorevanjem - 9. del: Merjenje in vrednotenje mehanskih vibracij
General Information
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Standards Content (sample)
ISO
INTERNATIONAL
8528-9
STANDARD
First edition
1995-12-15
Reciprocating internal combustion engine
driven alternating current generating
sets -
Part 9:
Measurement and evaluation of mechanical
vibrations
Groupes klectrogknes 2 courant alternatif entrah& par moteurs alternatifs
a combustion interne -
Partie 9: Mesurage et Evaluation des vibrations mkaniques
Reference number
ISO 8528-9:1995(E)
---------------------- Page: 1 ----------------------
ISO 8528-9: 1995(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. Esch 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.
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.
International Standard ISO 8528-9 was prepared by Technical Committee
lSO/TC 70, lnternal combustion engines, Subcommittee SC 2, Perform-
ance and tests.
ISO 8528 consists of the following Parts, under the general title
Reciproca ting in ternal combustion engine driven alterna ting curren t gen-
era ting se ts:
- Part 7: Application, ratings and Performance
- Part 2: Engines
- Part 3: Alternating curren t generators for generating sets
- Part 4: Controlgear and switchgear
- Part 5: Generating sets
- Part 6: Test methods
- Part 7: Technical declarations for specification and design
- Part 8: ßequirements and tests for low-power generating sets
- Part 9: Measurement and evaluation of mechanical vibrations
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 2 ----------------------
0 ISO ISO 8528-9: 1995(E)
- Part IO: Measurement of airborne noise by the enveloping surface
method
- Part 7 1: Dynamit uninterruptible power supply Systems
- Part 12: Emergency power supply to safety services
Annexes A, B, C, D and E of this part of ISO 8528 are for information only.
Ill
---------------------- Page: 3 ----------------------
This page intentionally left blank
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD 0 ISO ISO 8528-9: 1995(E)
Reciprocating internal combustion engine driven
alternating current generating sets -
Part 9:
Measurement and evaluation of mechanical vibrations
ISO 2041 :1990, Vibration and shock - Vocabulary.
1 Scope
ISO 5348:1987, Mechanical Vibration and shock -
This part of ISO 8528 describes a procedure for
Mechanical moun ting of accelerometers.
measuring and evaluating the external mechanical vi-
bration behaviour of generating sets at the measuring
ISO 8528-5: 1993, Reciprocating internal combustion
Points stated in that International Standard.
engine driven alterna ting current genera ting sets -
Part 5: Generating se ts.
lt applies to RIC engine driven AC generating sets for
fixed and mobile installations with rigid and/or resilient
I EC 34-7: 1992,
Rotating elec trical machines -
mountings. lt is applicable for land and marine use,
Part 7: Classification of types of constructjons and
excluding generating sets used on aircraft or those
moun ting arrangements (IM Code).
used to propel land vehicles and locomotives.
For some specific applications (essential hospital
3 Definitions
supplies, high rise buildings, etc.) supplementary re-
quirements may be necessary. The provisions of this
For the purposes of this part of ISO 8528, the defi-
part of ISO 8528 should be regarded as a basis.
nitions given in ISO 2041 and the following definition
aPPlY*
For generating sets driven by other reciprocating-type
Prime movers (e.g. sewage gas engines, steam en-
3.1 Vibration severity: A generic term that desig-
gines), the provisions of this part of ISO 8528 should
nates a value or set of values, such as a maximum
be regarded as a basis.
value, average value or rms value, or other Parameter
that is descriptive of the Vibration.
2 Normative references
NOTES
The following Standards contain provisions which,
through reference in this text, constitute provisions 1 It may refer to instantaneous values or average values.
of this part of ISO 8528. At the time of publication, the2 ISO 2041 includes two notes in the definition. These
editions indicated were valid. All Standards are subject
notes do not apply in this part of ISO 8528.
to revision, and Parties to agreements based on this
part of ISO 8528 are encouraged to investigate the
possibility of applying the most recent editions of the
4 Symbols and abbreviations
Standards indicated below. Members of IEC and ISO
maintain registers of currently valid International For the purposes of this part of ISO 8528 the follow-
Standards. ing Symbols apply.---------------------- Page: 5 ----------------------
0 ISO
ISO 8528-9: 1995(E)
a Acceleration If special requirements from regulations of any
o;her authority, e.g. inspecting and/or legislative
Peak value of acceleration
authorities, have to be met, the authority shall be
stated by the customer Prior to placing the Order.
Frequency
Any further additional requirements shall be subject
S Displacement
to agreement between the manufacturer and cus-
tomer.
s Peak value of displacement
Time
6 Measured values
Velocity
Acceleration, velocity and displacement are measured
Peak value of velocity
variables for the vibrations (see clause 10).
x Axial Co-Ordinate
In the general case of any Vibration over time interval
t, to t2, the rms velocity is given by
Transverse Co-Ordinate
v dt
z Vertical Co-Ordinate
V . . .
rms = ~ (1)
J t2 - 4
Angular velocity
In the particular case of sinusoidal Vibration the rms
The following subscripts are used in conjunction with
velocity is given by
the Vibration quantities V, s and a.
rms Value of Vibration quantity
(2)
x Measured value of Vibration quantity in the
axial direction
If the Vibration characteristics are analysed and if for
angular frequencies ol, w2, . . . . o,, the Vibration vel-
Measured value of Vibration quantity in the
ocities G,, G2, . . . . . c,, are available, then the following
transverse direction
relationships tan be used to determine the rms vel-
ocity:
z Measured value of Vibration quantity in the
vertical direction
A2 A2 A2
VI + v2 + . . . + vn
. . .
1, 2 . . . n Progressive values vrms = (3)
The following abbreviation is used.
v&sj + v12,s2 + *-- + VFmsn . . . (4)
rms =
IMB Type or construction and mounting ar-
rangement of generators according to
NOTE 3 For acceleration and displacement rms values
IEC 34-7
are calculated in the same manner.
7 Measuring devices
5 Regulations and additional
requirements
The measuring System shall provide the rms values
of displacement, velocity and acceleration with an ac-
curacy of + 10 % over the range 10 Hz to 1 000 Hz
5.1 For a.c. generating sets used on board ships
and an accuracy of TiE % over the range 2 Hz to
and offshore installations which have to comply with 10 Hz. These values may be obtained from a Single
rules of a classification Society, the additional require- Sensor whose Signal is either integrated or differen-
ments of the classification Society shall be observed. tiated, depending on the outcome of the measuring
The classification Society shall be stated by the cus-device, to derive the quantities not directly measured,
tomer Prior to placing the Order.
provided the accuracy of the measuring System is not
adversely affected.
For a.c. generating sets in unclassed equipment, such
additional requirements are in each case subject to
NOTE 4 The accuracy of measurement is also affected
by the method of connection between the transducer and
agreement between the manufacturer and customer.
---------------------- Page: 6 ----------------------
ISO 8528-9: 1995(E)
63 ISO
apply as appropriate for other types of design. If
the Object being measured. Both the frequency response
and the measured Vibration are affected by the method of measurements shall be taken at these
possible,attaching the transducer. lt is especially important to main-
Points in the three main directions, defined by X, y and
tain good attachment between the transducer and the Point
on the generating set being measured when Vibration levels
are high.
Figure 1 Shows the approximate positions of the
measuring Points which have to be located on the
Refer to ISO 5348 for guidance on the mounting of ac-
solid engine block and on solid areas of the generator
celerometers.
frame in Order to avoid measuring local structural vi-
brations.
8 Location of measuring Points and
If experience with similar generating sets has shown
direction of measurements
at which Points the maximum Vibration severity is to
be expected, not all the Points given in figure 1 need
Figure 1 Shows the recommended Points of Vibration
necessarily be measured.
measurement in generating Sets. The specifications
b) Generating set driven by a vertical in-line engine
a) Generating set driven by a vertical in-line engine
and a generator with pedestal bearings
with flange housing coupled generator with integral
bearings.
Front end top edge and back end top edge
1, 2
Front and rear end of engine base
3, 4
main bearing housing
5, 6 Generator
Generator base
7, 8
NOTE - The vertical in-line engine shown is given as an example only. Measuring Points 1 to 4 are applicable as appropriate
for other types of engine, e.g. V-engines, horizontal engines.Figure 1 - Arrangement of measuring Points
---------------------- Page: 7 ----------------------
Q ISO
ISO 8528-9: 1995(E)
Experience has shown that with a Standard design of
9 Operating conditions during
generating set structure and components, darnage
measurement
would not be expected if Vibration levels remain be-
low value 1.
The measurements shall be taken with the generating
set at its operating temperature and rated frequency,
If the Vibration levels fall between values 1 and 2, as-
at both zero power and rated power. If the rated
sessment of the generating set structure and com-
power of the generating set is not attainable, it should
ponents may be required along with an agreement
be tested at the maximum power that tan be at-
between the generating set manufacturer and the
tained.
component supplier in Order to ensure reliable oper-
ation.
10 Evaluation of results
In some cases Vibration levels tan be above value 2
but only if individual special designs of generating set
The
...
SLOVENSKI STANDARD
SIST ISO 8528-9:2002
01-december-2002
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Reciprocating internal combustion engine driven alternating current generating sets --
Part 9: Measurement and evaluation of mechanical vibrationsGroupes électrogènes à courant alternatif entraînés par moteurs alternatifs à combustion
interne -- Partie 9: Mesurage et évaluation des vibrations mécaniquesTa slovenski standard je istoveten z: ISO 8528-9:1995
ICS:
17.160 Vibracije, meritve udarcev in Vibrations, shock and
vibracij vibration measurements
27.020 Motorji z notranjim Internal combustion engines
zgorevanjem
29.160.40 (OHNWULþQLDJUHJDWL Generating sets
SIST ISO 8528-9:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------SIST ISO 8528-9:2002
---------------------- Page: 2 ----------------------
SIST ISO 8528-9:2002
ISO
INTERNATIONAL
8528-9
STANDARD
First edition
1995-12-15
Reciprocating internal combustion engine
driven alternating current generating
sets -
Part 9:
Measurement and evaluation of mechanical
vibrations
Groupes klectrogknes 2 courant alternatif entrah& par moteurs alternatifs
a combustion interne -
Partie 9: Mesurage et Evaluation des vibrations mkaniques
Reference number
ISO 8528-9:1995(E)
---------------------- Page: 3 ----------------------
SIST ISO 8528-9:2002
ISO 8528-9: 1995(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. Esch 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.
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.
International Standard ISO 8528-9 was prepared by Technical Committee
lSO/TC 70, lnternal combustion engines, Subcommittee SC 2, Perform-
ance and tests.
ISO 8528 consists of the following Parts, under the general title
Reciproca ting in ternal combustion engine driven alterna ting curren t gen-
era ting se ts:
- Part 7: Application, ratings and Performance
- Part 2: Engines
- Part 3: Alternating curren t generators for generating sets
- Part 4: Controlgear and switchgear
- Part 5: Generating sets
- Part 6: Test methods
- Part 7: Technical declarations for specification and design
- Part 8: ßequirements and tests for low-power generating sets
- Part 9: Measurement and evaluation of mechanical vibrations
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 4 ----------------------
SIST ISO 8528-9:2002
0 ISO ISO 8528-9: 1995(E)
- Part IO: Measurement of airborne noise by the enveloping surface
method
- Part 7 1: Dynamit uninterruptible power supply Systems
- Part 12: Emergency power supply to safety services
Annexes A, B, C, D and E of this part of ISO 8528 are for information only.
Ill
---------------------- Page: 5 ----------------------
SIST ISO 8528-9:2002
This page intentionally left blank
---------------------- Page: 6 ----------------------
SIST ISO 8528-9:2002
INTERNATIONAL STANDARD 0 ISO ISO 8528-9: 1995(E)
Reciprocating internal combustion engine driven
alternating current generating sets -
Part 9:
Measurement and evaluation of mechanical vibrations
ISO 2041 :1990, Vibration and shock - Vocabulary.
1 Scope
ISO 5348:1987, Mechanical Vibration and shock -
This part of ISO 8528 describes a procedure for
Mechanical moun ting of accelerometers.
measuring and evaluating the external mechanical vi-
bration behaviour of generating sets at the measuring
ISO 8528-5: 1993, Reciprocating internal combustion
Points stated in that International Standard.
engine driven alterna ting current genera ting sets -
Part 5: Generating se ts.
lt applies to RIC engine driven AC generating sets for
fixed and mobile installations with rigid and/or resilient
I EC 34-7: 1992,
Rotating elec trical machines -
mountings. lt is applicable for land and marine use,
Part 7: Classification of types of constructjons and
excluding generating sets used on aircraft or those
moun ting arrangements (IM Code).
used to propel land vehicles and locomotives.
For some specific applications (essential hospital
3 Definitions
supplies, high rise buildings, etc.) supplementary re-
quirements may be necessary. The provisions of this
For the purposes of this part of ISO 8528, the defi-
part of ISO 8528 should be regarded as a basis.
nitions given in ISO 2041 and the following definition
aPPlY*
For generating sets driven by other reciprocating-type
Prime movers (e.g. sewage gas engines, steam en-
3.1 Vibration severity: A generic term that desig-
gines), the provisions of this part of ISO 8528 should
nates a value or set of values, such as a maximum
be regarded as a basis.
value, average value or rms value, or other Parameter
that is descriptive of the Vibration.
2 Normative references
NOTES
The following Standards contain provisions which,
through reference in this text, constitute provisions 1 It may refer to instantaneous values or average values.
of this part of ISO 8528. At the time of publication, the2 ISO 2041 includes two notes in the definition. These
editions indicated were valid. All Standards are subject
notes do not apply in this part of ISO 8528.
to revision, and Parties to agreements based on this
part of ISO 8528 are encouraged to investigate the
possibility of applying the most recent editions of the
4 Symbols and abbreviations
Standards indicated below. Members of IEC and ISO
maintain registers of currently valid International For the purposes of this part of ISO 8528 the follow-
Standards. ing Symbols apply.---------------------- Page: 7 ----------------------
SIST ISO 8528-9:2002
0 ISO
ISO 8528-9: 1995(E)
a Acceleration If special requirements from regulations of any
o;her authority, e.g. inspecting and/or legislative
Peak value of acceleration
authorities, have to be met, the authority shall be
stated by the customer Prior to placing the Order.
Frequency
Any further additional requirements shall be subject
S Displacement
to agreement between the manufacturer and cus-
tomer.
s Peak value of displacement
Time
6 Measured values
Velocity
Acceleration, velocity and displacement are measured
Peak value of velocity
variables for the vibrations (see clause 10).
x Axial Co-Ordinate
In the general case of any Vibration over time interval
t, to t2, the rms velocity is given by
Transverse Co-Ordinate
v dt
z Vertical Co-Ordinate
V . . .
rms = ~ (1)
J t2 - 4
Angular velocity
In the particular case of sinusoidal Vibration the rms
The following subscripts are used in conjunction with
velocity is given by
the Vibration quantities V, s and a.
rms Value of Vibration quantity
(2)
x Measured value of Vibration quantity in the
axial direction
If the Vibration characteristics are analysed and if for
angular frequencies ol, w2, . . . . o,, the Vibration vel-
Measured value of Vibration quantity in the
ocities G,, G2, . . . . . c,, are available, then the following
transverse direction
relationships tan be used to determine the rms vel-
ocity:
z Measured value of Vibration quantity in the
vertical direction
A2 A2 A2
VI + v2 + . . . + vn
. . .
1, 2 . . . n Progressive values vrms = (3)
The following abbreviation is used.
v&sj + v12,s2 + *-- + VFmsn . . . (4)
rms =
IMB Type or construction and mounting ar-
rangement of generators according to
NOTE 3 For acceleration and displacement rms values
IEC 34-7
are calculated in the same manner.
7 Measuring devices
5 Regulations and additional
requirements
The measuring System shall provide the rms values
of displacement, velocity and acceleration with an ac-
curacy of + 10 % over the range 10 Hz to 1 000 Hz
5.1 For a.c. generating sets used on board ships
and an accuracy of TiE % over the range 2 Hz to
and offshore installations which have to comply with 10 Hz. These values may be obtained from a Single
rules of a classification Society, the additional require- Sensor whose Signal is either integrated or differen-
ments of the classification Society shall be observed. tiated, depending on the outcome of the measuring
The classification Society shall be stated by the cus-device, to derive the quantities not directly measured,
tomer Prior to placing the Order.
provided the accuracy of the measuring System is not
adversely affected.
For a.c. generating sets in unclassed equipment, such
additional requirements are in each case subject to
NOTE 4 The accuracy of measurement is also affected
by the method of connection between the transducer and
agreement between the manufacturer and customer.
---------------------- Page: 8 ----------------------
SIST ISO 8528-9:2002
ISO 8528-9: 1995(E)
63 ISO
apply as appropriate for other types of design. If
the Object being measured. Both the frequency response
and the measured Vibration are affected by the method of measurements shall be taken at these
possible,attaching the transducer. lt is especially important to main-
Points in the three main directions, defined by X, y and
tain good attachment between the transducer and the Point
on the generating set being measured when Vibration levels
are high.
Figure 1 Shows the approximate positions of the
measuring Points which have to be located on the
Refer to ISO 5348 for guidance on the mounting of ac-
solid engine block and on solid areas of the generator
celerometers.
frame in Order to avoid measuring local structural vi-
brations.
8 Location of measuring Points and
If experience with similar generating sets has shown
direction of measurements
at which Points the maximum Vibration severity is to
be expected, not all the Points given in figure 1 need
Figure 1 Shows the recommended Points of Vibration
necessarily be measured.
measurement in generating Sets. The specifications
b) Generating set driven by a vertical in-line engine
a) Generating set driven by a vertical in-line engine
and a generator with pedestal bearings
with flange housing coupled generator with integral
bearings.
Front end top edge and back end top edge
1, 2
Front and rear end of engine base
3, 4
main bearing housing
5, 6 Generator
Generator base
7, 8
NOTE - The vertical in-line engine shown is given as an example only. Measuring Points 1 to 4 are applicable as appropriate
for other types of engine, e.g. V-engines, horizontal engines.Figure 1 - Arrangement of measuring Points
---------------------- Page: 9 ----------------------
SIST ISO 8528-9:2002
Q ISO
ISO 8528-9: 1995(E)
Experience has shown that with a Standard design of
9 Operating conditions during
generating set structure and components, darnage
measurement
would not be expected if Vibration levels remain be-
low value 1.
The measurements shall be taken with the generating
set at its operating temperature and rated frequency,
If the Vibration levels fall between values 1 and 2, as-
at both zero power and rated po
...
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