Norma IEC 41

INTERNATIONALSTANDARD IEC 60041 This is a free 12 page sample. Access the full version online. Third edition 1991-11 Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines This English-language version is derived from the original bilingual publication by leaving out all French-language pages. Missing page numbers correspond to the Frenchlanguage pages. Reference number IEC 60041:1991(E) For example. as well as the list of publications issued. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC. please contact the Customer Service Centre: Email: custserv@iec. On-line information is also available on recently issued publications.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 .iec. as well as corrigenda. IEC 34-1 is now referred to as IEC 60034-1. amendments and corrigenda. is available in the IEC Catalogue of publications (see below) in addition to new editions.2 refer.ch/searchpub) enables you to search by a variety of criteria including text searches.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www. to the base publication. technical committees and date of publication. thus ensuring that the content reflects current technology. Information relating to this publication. 1. respectively.ch/online_news/ justpub) is also available by email.1 and 1. edition numbers 1.iec. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication. the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. For example. is also available from the following: • • IEC Web Site (www. withdrawn and replaced publications.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. Consolidated editions The IEC is now publishing consolidated versions of its publications.0. • IEC Just Published This summary of recently issued publications (www. This is a free 12 page sample. Please contact the Customer Service Centre (see below) for further information. including its validity. Access the full version online. • Customer Service Centre If you have any questions regarding this publication or need further assistance. Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec. storage pumps and pump-turbines  IEC 1991 Copyright . see current catalogue . International Electrotechnical Commission. electronic or mechanical.INTERNATIONAL STANDARD IEC 60041 This is a free 12 page sample. PO Box 131.ch Com mission Electrotechnique Internationale International Electrotechnical Com m ission Международная Электротехническая Комиссия PRICE CODE XK For price.ch Web: www. including photocopying and microfilm. rue de Varembé. without permission in writing from the publisher. 3.all rights reserved No part of this publication may be reproduced or utilized in any form or by any means. CH-1211 Geneva 20. Third edition 1991-11 Field acceptance tests to determine the hydraulic performance of hydraulic turbines. Access the full version online.iec. . .1 Scope 1.1.1. . change the numeration in order to obtain (as on page 12): 1 Scope and object 1.1 This International Standard . . CORRIGENDUM 1 Correction dans le texte anglais uniquement Page 3 CONTENTS In the title of subclause 4. 1. remplacer les signes représentatifs existants par les nouveaux signes suivants: . pompes d’accumulation et pompes-turbines. provision for the test . Access the full version online. instead of . .3 Tests of speed . . storage pumps and pump-turbines This is a free 12 page sample. replace the existing symbols by the following new symbols: .1. . subclause 2. 1. à atteindre In the table. . . en vue de la détermination de leurs performances hydrauliques Field acceptance tests to determine the hydraulic performance of hydraulic turbines.3. . . . . 1. au paragraphe 2. . . . à ne pas dépasser . . . Scope and object. provision for test .2 Object 1.3 Types of machines Page 17 Page 16 Dans le tableau. not to be exceeded .Publication 41 de la CEI IEC Publication 41 (Troisième édition – 1991) (Third edition – 1991) Essais de réception sur place des turbines hydrauliques.1. Page 13 Correction dans le texte anglais uniquement In clause 1. to be reached ou or . .3.2 Model tests.1. .7 (Limits). read . .7 (Limites). .1. when used . au-dessus du schéma décrivant un «Groupe à axe horizontal». Access the full version online. at the right-hand side of the diagram. subclause 2.5. au lieu de Correction in the French text only . figure 5c Page 37. rearrange the two existing equations so as to place them together. in the sixth line.6.Correction dans le texte anglais uniquement Page 29 In the table.6. . third column. déplacer les deux équations existantes afin de les situer ensemble à droite. pompe à débit lire .3. instead of . . . figure 5c Dans la bordure de droite du schéma. au paragraphe 2. the following equation: z1 = z2 z1 = z2 . and g = − g3 + g 4 2 read . . Dans le tableau. . .3. pompe à débit nul Page 34. . à la hauteur de la pointe de flèche. . . comme suit: In the upper part of the diagram. . level with the arrowhead. figure 5b Page 35. figure 5b Dans la partie supérieure du schéma. above the diagram describing a “Horizontal shaft unit” as follows: Z 1 = z 1´ – z 1 Z 2 = z 2´ – z 2 Z 1 = z 1´ – z 1 Z 2 = z 2´ – z 2 Page 36. ajouter l’équation suivante: Add.4. on the right-hand side. and g = g + g4 3 2 Page 30 This is a free 12 page sample. . sous «Terme» (deuxième colonne). . .2. . . Correction in the French text only Page 86 6. Correction dans le texte anglais uniquement Page 195. . . . dépend de la combinaison des lectures et de la combinaison de l’erreur aléatoire . au lieu de In the fifth paragraph. au lieu de . (geodetic . . .3.2. .2. lire This is a free 12 page sample. read ZB´ = zB´ – zB .2. instead of zB´ = zB´ – zB . . . dépend de la combinaison de l’erreur aléatoire . . instead of m is the coefficient .2 Erreurs aléatoires Dans l’avant-dernière ligne de la page.2 Prescriptions complémentaires 10.3. . .6 Computation of discharge In the eighth line of text. .3. instead of Annexes F et G de l’ISO 3354: lire Annexes H et J de l’ISO 3354: Correction dans le texte anglais uniquement Annexes F and G of ISO 3354: read Annexes H and J of ISO 3354: Page 141 10. on the right-hand side. . read m is a coefficient . . . lire partout «constante». figure 34b In the legends below the diagram. Access the full version online. . . third line. in the first line. figure 14 Correction in the French text only Dans le schéma. .5.2 Additional requirements Au cinquième alinéa. instead of . . read . au lieu de «constant». . . (geodesic .Page 84. . Page 128 Page 129 10. E = g⋅H ( pabs − pabs ) 2 1 ( v1 − v 2 ) 2 + 2 2 lire + g ⋅ ( z1 − z 2 ) read E = g⋅H = ( p abs − p abs ) 1 2 ( v1 − v 2 ) 2 + 2 2 + g ⋅ ( z1 − z 2 ) Page 214 Page 215 Dans l’équation située juste au-dessous de la figure 41 au lieu de In the equation following figure 41.Page 204. figure 38 Page 207. au lieu de In the framed equation at the top of the page. Access the full version online. instead of NPSE = g 2 ⋅ NPSH = ( pabs − p va ) 2 ρ2 lire 2 + v2 2 + g2 ⋅ ( z r − z2 ) read NPSE = g 2 ⋅ NPSH = Correction dans le texte anglais uniquement ( p abs − p va ) 2 ρ2 2 + v2 2 − g2 ⋅ ( z r − z2 ) Page 219. figure 38 Même correction qu’en page 36 (voir ci-dessus) Same correction as on page 37 (see above) Page 212 Page 213 Dans l’équation encadrée au haut de la page. après le H. instead of d = 3 mm à 6 mm read d = 3 mm to 6 mm . figure 37 Page 205. instead of This is a free 12 page sample. after the H add an equal sign (=). figure 42 In the legends under the diagram. figure 37 Même correction qu’en page 34 (voir ci-dessus) Same correction as on page 35 (see above) Page 206. ajouter un signe égal (=). au lieu de – Dimension du bâti . dans la formule pour p M enlever un ∆ afin de lire: Under the diagram. in the last formula on the page. align indices. . . . Access the full version online. delete one ∆ in order to read: This is a free 12 page sample. . . instead of cos ϕ s = Pas ( 2 w ) 3 ⋅ U s ⋅ Is lire cos ϕ s = cos ϕ s = Pas ( 2 w ) 3 ⋅ U s ⋅ Is read Pas (2w) 3 ⋅ U s ⋅ Is Page 280 cos ϕ s = Pas (2w) 3 ⋅ U s ⋅ Is Correction in the French text only Dans la légende de la figure 58. . . au lieu de Under equation (4). lire – Dimensions du bâti . . figure 45a Page 228. read “or”. figure 45a In the third line of the legends half-way up the diagram. à ±5 % près. in the formula for p M . aligner les indices.2 Mesures auxiliaires Dans la première ligne.4. au lieu de . Correction in the French text only . p M = p 1 + ρ ⋅ g ⋅ h 1 = p + ρoil ⋅ g ⋅ (h 2 – h 1 ) + ρ ⋅ g ⋅ h 1 + ∆p Page 256 Page 257 Sous l’équation (4). . instead of ∆ p = differential-pressure read ∆ p = differential pressure Sous le schéma. dans la dernière formule de la page. . Correction dans le texte anglais uniquement Page 303 In the penultimate line of the page: instead of “ou”. Page 308 14. . lire . à ±5 % près environ. . . .Page 229. instead of “Y ”and "Y r ” read Y r Page 398 Correction in the French text only Annexe H Dans le titre.2. au lieu de Subclause 15. au lieu de « Y » et «Y r » lire Y r In the first line and third line of text. . . second paragraph.2. DE L’ÉNERGIE MÉCANIQUE MASSIQUE Mars 1996 March 1996 .1. dernière ligne. n theoretically equal to . . n. n est théoriquement égal à . . Page 356 Page 357 Dans les première et troisième lignes du texte juste au-dessous du tableau C1. n is theoretically equal to .1. . . read lire . . . This is a free 12 page sample. . . . . DE L’ÉNERGIE MÉCANIQUE lire .Page 322 Page 323 Paragraphe 15. . .1. last line. . à la deuxième ligne. deuxième alinéa. Access the full version online. . . au lieu de . . . just below table C. .1. théoriquement égale à . instead of .1. . . 7 Observations 4. definitions. Scope and object 1.2 Test conditions to be fulfilled Computation and analysis of results 6.3 Types of machines 1.3 Comparison with guarantees 71 71 77 81 81 87 93 SECTION TI IREE .6 Instruments 4. symbols and units Nature and extent of hydraulic performance guarantees 3.2 Units 2.1 General 2.2 Test procedure and ins tr umentation 109 109 111 .2 Uncertainties in measurements and presentation of results 6.3 Personnel 4. Test conditions and procedure 7.EXECUTION OF TEST FOR THE DETERMINATION OF TRIE TRANSIENT CHARACTERISTIC OF THE MACH IN E 7.3 List of terms.GENERAL RULES Clause 1.2 Object 1.1 Computation of test results 6.5 Agreement on test procedure 4.41 © I E C - 3 - CONTENTS Page FOREWORD PREFACE 9 9 SECTION ONE . 2.1 Test conditions 7.4 Reference to IEC and ISO standards 1.1 Adequate provision for the test 4.9 Final report 15 15 15 15 51 51 51 55 59 59 59 59 59 61 63 63 65 67 SECTION Two.1 Scope 1.5 Excluded topics 13 13 13 13 15 15 Terms. 3. Test conditions and procedure 5. This is a free 12 page sample. definitions.8 Inspection after test 4.3 Other guarantees Organisation of test 4.2 Authority for test 4. 6. 4. Access the full version online.4 Preparation for test 4.2 Main guarantees 3. symbols and units 2.EXECUTION OF TEST FOR THE DETERMINATION OF THE STEADY STATE PERFORMANCE OF THE MACH IN E 5.1 General 3.1 General test procedure 5. 4 Pressure-time method 10.5 Tracer methods 10.1 General 11. Introduction 9.8 Volumetric gauging method 119 119 123 145 147 163 167 179 181 Power 12. 13. This is a free 12 page sample.METHODS OF MEASUREMENT 9.6 Uncertainty of measurements 253 253 283 285 Thermodynamic method for measuring efficiency 14. Computation and analysis of results 8. 11.2 Comparison with guarantees 111 111 113 SECTION FOUR .2 Current-meter method 10.2 Speed measurements in the case of direct measurement of power 13.2 Hydraulic power 9. 12.2 Efficiency and specific mechanical energy 14.6 Weirs 10.1 General 13.4 Pressure measurements 11.3 Pitot tubes 10. Access the full version online.4 Uncertainty of measurement 293 293 293 295 305 309 313 319 .1 General 14.7 Uncertainty of measurement 291 291 291 291 291 Rotational speed 13.2 Direct method of power measurement 12.3 Determination of the net positive suction specific energy 11.41© IEC -5 Page Clause 8. 10.4 Apparatus 14.5 Test conditions to be fulfilled 14.3 Speed measurements in the case of indirect measurement of power 13.1 Conversion of results 8.7 Standardized differential pressure devices 10.3 Procedure for measurement of specific mechanical energy 14.5 Free water level measurements 11.1 Indirect method of power measurement 12. 14.3 Bearing losses 187 187 189 213 217 241 251 Specific hydraulic energy of the machine 11.1 General 10.6 Corrective terms 14.2 Determination of the specific hydraulic energy 11.1 Efficiency 9.3 Mechanical power 115 115 115 119 Discharge 10. Index tests 15.3 Measurement of other quantities 15.1 General 15. Access the full version online.4 Computation of results 15.2 Relative discharge measurement 15.5 Uncertainty of measurement 321 321 323 331 331 333 APPEr\TDIX A — Systematic uncertainties in performance measurements at steady state conditions 337 APPEN DIX B — Rejection of outliers 353 APPENDIX C — Analysis of the random uncertainties for a test at constant operating conditions 355 APPENDIX D — Analysis of the random uncertainties for a test over a range of operating conditions . 363 APPENDIX E — Physical data APPENDIX F — Derivation of the equation for the specific hydraulic energy of a machine 391 APPENDIX G — Measurement of electric power — Determination of the correction for a single-phase measuring system 395 Thermodynamic method — Examples for a balance of power and computation of the specific mechanical energy 399 Acoustic method of discharge measurement 405 APPENDIX H — APPENDIX J — 369 . 15.41 © IEC 7 Page Clause This is a free 12 page sample. 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