Field acceptance tests to determine thehydraulic performance of hydraulic turbines,storage pumps and pump-turbines

Reference numberIEC 60041:1991(E)

INTERNATIONALSTANDARD

IEC60041

Third edition1991-11

This English-language version is derived from the originalbilingual publication by leaving out all French-languagepages. Missing page numbers correspond to the French-language pages.

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Publication numbering

As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

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Field acceptance tests to determine thehydraulic performance of hydraulic turbines,storage pumps and pump-turbines

For price, see current catalogue

IEC 1991 Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

INTERNATIONALSTANDARD

IEC60041

Third edition1991-11

XKCommission Electrotechnique InternationaleInternational Electrotechnical Commission

PRICE CODE

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Publication 41 de la CEI(Troisime dition 1991)

Essais de rception sur place des turbineshydrauliques, pompes daccumulation et

pompes-turbines,en vue de la dtermination

de leurs performances hydrauliques

IEC Publication 41(Third edition 1991)

Field acceptance tests to determinethe hydraulic performance of

hydraulic turbines, storage pumps andpump-turbines

C O R R I G E N D U M 1

Correction dans le texte anglais uniquement

Correction dans le texte anglais uniquement

Page 16

Dans le tableau, au paragraphe 2.3.1.7 (Limites),remplacer les signes reprsentatifs existants parles nouveaux signes suivants:

. . . ne pas dpasser

. . . atteindre ou

Page 3

CONTENTS

In the title of subclause 4.1, instead of. . . provision for the test . . .

read

. . . provision for test . . .

Page 13

In clause 1, Scope and object, change thenumeration in order to obtain (as on page 12):

1 Scope and object1.1 Scope1.1.1 This International Standard . . .1.1.2 Model tests, when used . . .1.1.3 Tests of speed . . .1.2 Object1.3 Types of machinesPage 17

In the table, subclause 2.3.1.7 (Limits), replace theexisting symbols by the following new symbols:

. . . not to be exceeded

. . . to be reached or

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Correction dans le texte anglais uniquement

Page 30

Dans le tableau, au paragraphe 2.3.6.5, sousTerme (deuxime colonne), au lieu de

. . . . pompe dbit

lire

. . . . pompe dbit nul

Page 34, figure 5b

Dans la partie suprieure du schma, dplacer lesdeux quations existantes afin de les situer ensemble droite, au-dessus du schma dcrivant un Groupe axe horizontal, comme suit:

Z1 = z1 z1Z2 = z2 z2

Page 36, figure 5c

Dans la bordure de droite du schma, la hauteurde la pointe de flche, ajouter lquation suivante:

z1 = z2

Page 29

In the table, subclause 2.3.6.4, third column, in thesixth line, instead of

. . . and gg g

=

+32

4

read

. . . and g =+3 4

2

g g

Correction in the French text only.

Page 35, figure 5b

In the upper part of the diagram, rearrange the twoexisting equations so as to place them together, onthe right-hand side, above the diagram describing aHorizontal shaft unit as follows:

Z1 = z1 z1Z2 = z2 z2

Page 37, figure 5c

Add, at the right-hand side of the diagram, levelwith the arrowhead, the following equation:

z1 = z2

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Page 84, figure 14

Dans le schma, au lieu de constant, lire partoutconstante.

Page 86

6.2.3.2 Erreurs alatoires

Dans lavant-dernire ligne de la page, au lieu de

. . . dpend de la combinaison des lectures et dela combinaison de lerreur alatoire . . .

lire

. . . dpend de la combinaison de lerreuralatoire . . .

Page 128

10.2.3.2 Prescriptions complmentaires

Au cinquime alina, au lieu de

Annexes F et G de lISO 3354:

lire

Annexes H et J de lISO 3354:

Correction dans le texte anglais uniquement

Correction dans le texte anglais uniquement

Correction in the French text only

Correction in the French text only

Page 129

10.2.3.2 Additional requirements

In the fifth paragraph, instead ofAnnexes F and G of ISO 3354:

read

Annexes H and J of ISO 3354:

Page 141

10.2.5.6 Computation of discharge

In the eighth line of text, instead ofm is the coefficient . . .

read

m is a coefficient . . .

Page 195, figure 34b

In the legends below the diagram, on the right-handside; in the first line, instead of

. . . (geodesic . . .read

. . . (geodetic . . .

third line, instead ofzB = zB zB . . .

readZB = zB zB . . .

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Page 204, figure 37

Mme correction quen page 34 (voir ci-dessus)

Page 206, figure 38

Mme correction quen page 36 (voir ci-dessus)

Page 212

Dans lquation encadre au haut de la page, aprsle H, ajouter un signe gal (=); au lieu de

Page 205, figure 37

Same correction as on page 35 (see above)

Page 207, figure 38

Same correction as on page 37 (see above)

Page 213

In the framed equation at the top of the page, afterthe H add an equal sign (=); instead of

E g Hp p v v

g z z=

+

+ ( ) ( ) ( )abs abs1 2 1

222

1 22

lire read

E g Hp p v v

g z z= =

+

+ ( ) ( ) ( )abs abs1 2 1

222

1 22

Page 214

Dans lquation situe juste au-dessous de lafigure 41 au lieu de

Page 215

In the equation following figure 41, instead of

NPSE g NPSHp p v

g z z= =

+ + 22

2

( )( )abs 2 va 2

2

r 22

lire read

NPSE g NPSHp p v

g z z= =

+ 22

2

( )( )abs 2 va 2

2

r 22

Correction dans le texte anglais uniquement Page 219, figure 42

In the legends under the diagram, instead ofd = 3 mm 6 mm

read

d = 3 mm to 6 mm

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Page 228, figure 45a

Sous le schma, dans la formule pour pM enleverun afin de lire:

Page 229, figure 45a

In the third line of the legends half-way up thediagram, instead of

p = differential-pressure

read

p = differential pressure

Under the diagram, in the formula for pM, deleteone in order to read:

pM = p1 + g h1 = p + oil g (h2 h1) + g h1 + p

Page 256

Sous lquation (4), dans la dernire formule dela page, aligner les indices; au lieu de

cos( )

s

s s

P w

U I=

as2

3

lire

cos s

s s

P

U I=

as (2w)

3

Page 280

Dans la lgende de la figure 58, au lieu de

Dimension du bti . . .

lire

Dimensions du bti . . .

Correction dans le texte anglais uniquement

Page 308

14.4.2 Mesures auxiliaires

Dans la premire ligne, au lieu de

. . . 5 % prs, . . .

lire

. . . 5 % prs environ, . . .

Page 257

Under equation (4), in the last formula on thepage, align indices; instead of

cos( )

s

s s

P w

U I=

as2

3

read

cos s

s s

P

U I=

as (2w)

3

Correction in the French text only

Page 303

In the penultimate line of the page:instead of ou, read or.Correction in the French text only

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Page 322

Paragraphe 15.2.1.1, deuxime alina, dernireligne, au lieu de

. . . n, thoriquement gale . . .

lire

. . . n est thoriquement gal . . .

Page 356

Dans les premire et troisime lignes du textejuste au-dessous du tableau C1, au lieu de Y etY

r lire Yr

Page 398

Annexe H

Dans le titre, la deuxime ligne, au lieu de

. . . DE LNERGIE MCANIQUElire

. . . DE LNERGIE MCANIQUEMASSIQUE

Page 323

Subclause 15.2.1.1, second paragraph, last line,instead of

. . . n theoretically equal to . . .

read

. . . n is theoretically equal to . . .

Page 357

In the first line and third line of text, just belowtable C.1, instead of Y and "Y

r read Yr

Correction in the French text only

Mars 1996 March 1996

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41 I E C - 3 -

CONTENTS

Page

FOREWORD 9PREFACE 9

SECTION ONE - GENERAL RULES

Clause

1. Scope and object 131.1 Scope 131.2 Object 131.3 Types of machines 13

1.4 Reference to IEC and ISO standards 15

1.5 Excluded topics 152. Terms, definitions, symbols and units

152.1 General 152.2 Units 15

2.3 List of terms, definitions, symbols and units 15

3. Nature and extent of hydraulic performance guarantees 51

3.1 General 513.2 Main guarantees

513.3 Other guarantees

554. Organisation of test

594.1 Adequate provision for the test

594.2 Authority for test

594.3 Personnel 594.4 Preparation for test

594.5 Agreement on test procedure

614.6 Instruments 634.7 Observations 63

4.8 Inspection after test 654.9 Final report 67

SECTION Two- EXECUTION OF TEST FOR THE DETERMINATIONOF THE STEADY STATE PERFORMANCE OF THE MACH INE

5. Test conditions and procedure 71

5.1 General test procedure 715.2 Test conditions to be fulfilled

77

6. Computation and analysis of results

816.1 Computation of test results 816.2 Uncertainties in measurements and presentation of results 876.3 Comparison with guarantees 93

SECTION TI IREE - EXECUTION OF TEST FOR THE DETERMINATIONOF TRIE TRANSIENT CHARACTERISTIC OF THE MACH INE

7. Test conditions and procedure 1097.1 Test conditions 1097.2 Test procedure and instrumentation 111

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41 IEC -5 -

Clause Page

8. Computation and analysis of results 1118.1 Conversion of results 1118.2 Comparison with guarantees 113

SECTION FOUR - METHODS OF MEASUREMENT

9. Introduction 1159.1 Efficiency 1159.2 Hydraulic power 1159.3 Mechanical power 119

10. Discharge 11910.1 General 11910.2 Current-meter method

12310.3 Pitot tubes 14510.4 Pressure-time method

14710.5 Tracer methods 16310.6 Weirs 16710.7 Standardized differential pressure devices 17910.8 Volumetric gauging method

181

11. Specific hydraulic energy of the machine 18711.1 General 18711.2 Determination of the specific hydraulic energy 18911.3 Determination of the net positive suction specific energy 21311.4 Pressure measurements

21711.5 Free water level measurements

24111.6 Uncertainty of measurements

251

12. Power 25312.1 Indirect method of power measurement 25312.2 Direct method of power measurement 28312.3 Bearing losses 285

13. Rotational speed 29113.1 General 29113.2 Speed measurements in the case of direct measurement of power 29113.3 Speed measurements in the case of indirect measurement of power 29113.4 Uncertainty of measurement 291

14. Thermodynamic method for measuring efficiency 29314.1 General 29314.2 Efficiency and specific mechanical energy 29314.3 Procedure for measurement of specific mechanical energy 29514.4 Apparatus 30514.5 Test conditions to be fulfilled 30914.6 Corrective terms 31314.7 Uncertainty of measurement 319

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APPEr\TDIX A

APPENDIX B

APPENDIX C

APPENDIX D

APPENDIX E

APPENDIX F

APPENDIX G

APPENDIX H

APPENDIX J

41 IEC

7

Clause Page

15. Index tests 32115.1 General 32115.2 Relative discharge measurement 32315.3 Measurement of other quantities

33115.4 Computation of results

33115.5 Uncertainty of measurement

333

Systematic uncertainties in performance measurements at steady state conditions 337

Rejection of outliers

353Analysis of the random uncertainties for a test at constant operating conditions 355

Analysis of the random uncertainties for a test over a range of operating conditions . 363

Physical data 369

Derivation of the equation for the specific hydraulic energy of a machine 391

Measurement of electric power Determination of the correction for a single-phasemeasuring system 395Thermodynamic method Examples for a balance of power and computation of thespecific mechanical energy 399

Acoustic method of discharge measurement 405

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Title: IEC 60041 Ed. 3.0 Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbinesTitleLink: