BS EN 62058-11:2010
$215.11
Electricity metering equipment (a.c.). Acceptance inspection – General acceptance inspection methods
| Published By | Publication Date | Number of Pages |
| BSI | 2010 | 90 |
IEC 62058-11:2008 specifies the general acceptance inspection methods which apply to newly manufactured electricity meters produced and supplied in lots of 50 and above. This publication is of high relevance for Smart Grid.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 12 | English CONTENTS |
| 16 | INTRODUCTION |
| 17 | 1 Scope 2 Normative references 3 Terms and definitions |
| 18 | 3.1 Sources of data |
| 19 | 3.2 Types of sampling 3.3 Specifications, values and test results |
| 20 | 3.4 Types of inspection |
| 22 | 3.5 Types of acceptance sampling inspection |
| 23 | 3.6 Acceptance sampling inspection system aspects |
| 24 | 3.7 Acceptance criteria |
| 26 | 3.8 Types of operating characteristic curves 3.9 Terms relating to operating characteristics |
| 29 | 3.10 Outgoing quality concepts 3.11 Other terms |
| 30 | 4 Symbols and abbreviations 4.1 Symbols |
| 31 | 4.2 Acronyms 5 General 5.1 The objectives of acceptance inspection |
| 32 | 5.2 Acceptance sampling plans, schemes and systems 5.3 Practical and economic advantages of using standard sampling plans |
| 33 | 5.4 Agreement between the parties |
| 34 | 5.5 Selection of sampling schemes and sampling plans |
| 35 | 5.6 Considerations influencing a selection Figures Figure 1 – Selection procedure of sampling schemes and plans |
| 37 | 5.7 Nonconformity and nonconforming items 5.8 Classification of nonconformities |
| 38 | 5.9 Operating characteristic (OC) curve 5.10 Producer’s risks (PR) and consumer’s risk (CR) |
| 39 | 5.11 AQL, PRQ, LQ and CRQ 5.12 Switching rules for normal, tightened and reduced inspection |
| 40 | 5.13 Inspection level 5.14 Sample size code letter Figure 2 – Outline of switching rules |
| 41 | 5.15 Place of inspection 5.16 Submission of product for acceptance inspection 5.17 Drawing of samples |
| 42 | 5.18 Acceptability of lots 6 100 % inspection 6.1 Application of the method 6.2 Lot sizes and acceptance numbers Table 1 – Acceptance number Ac for 100 % inspection |
| 43 | 6.3 Acceptance and non-acceptance 7 Lot-by-lot inspection by attributes 7.1 Application of the method Tables |
| 44 | 7.2 Drawing of samples 7.3 Inspection level 7.4 Sampling plans |
| 45 | Table 2 – Single sampling plans for normal, tightened and reduced inspection, AQL = 1,0 Table 3 – Example with lot size = 80, inspection level II |
| 46 | Table 4 – Example with lot size = 400, inspection level II Table 5 – Example with lot size = 800, inspection level III |
| 47 | Table 6 – Single sampling plans for critical nonconformities Ac = 0 |
| 48 | Table 7 – Double sampling plans for normal, tightened and reduced inspection, AQL = 1,0 |
| 49 | 7.5 Normal, tightened and reduced inspection (see also 5.12) |
| 51 | 7.6 Operating characteristic (OC) curves Table 8 – Calculation of switching scores |
| 52 | Figure 3 – OC curves for AQL = 1,0, single sampling plans, normal inspection Figure 4 – OC curves for AQL = 1,0, single sampling plans, tightened inspection |
| 53 | Figure 5 – OC curves for single sampling plans, Ac=0 Table 9 – Tabulated values of OC curves for single sampling, AQL = 1,0 plans |
| 54 | 7.7 Process average 7.8 Average outgoing quality (AOQ) 7.9 Average outgoing quality limit (AOQL) Table 10 – Tabulated values of OC curves for single sampling, normal inspection, accept zero sampling plans |
| 55 | 7.10 Consumer’s risk (CR) Table 11 – Average Outgoing Quality Limit (AOQL) at AQL = 1,0 Table 12 – Average Outgoing Quality Limit (AOQL) for Ac = 0 sampling plans, normal inspection |
| 56 | Table 13 – Consumer’s risk quality (CRQ): AQL = 1,0 plans Table 14 – Consumer’s risk quality (CRQ): Accept zero plans |
| 57 | 7.11 Producer’s risk (PR) Table 15 – Producer’s risk (PR): AQL = 1,0 Table 16 – Producer’s risk (PR): Accept zero plans |
| 58 | 8 Isolated lot inspection 8.1 Application of the method 8.2 Procedures specified 8.3 Limiting quality 8.4 Procedure A |
| 59 | Table 17 – Sampling plans for non-critical nonconformities, procedure A, LQ = 5,0 |
| 60 | Table 18 – Sampling plans for critical nonconformities, procedure A Table 19 – Probability of acceptance for accept zero plans |
| 61 | 8.5 Procedure B |
| 62 | Figure 6 – Operating characteristic curves for single sampling plans for non-critical nonconformities, procedure B Table 20 – Single sampling plans for non-critical nonconformities, procedure B, LQ = 5,0 |
| 63 | 8.6 Rules for acceptance and non-acceptance 9 Skip-lot inspection 9.1 Application of the method Table 21 – Equivalent sample sizes for single and double sampling Table 22 – Equivalent acceptance numbers for single and double sampling |
| 64 | 9.2 Manufacturer qualification 9.3 Product qualification |
| 65 | 9.4 Detailed procedures 10 Lot-by-lot inspection by variables 10.1 Application of the method 10.2 Choice between the “s” and the “σ” methods |
| 66 | 10.3 Standard plans 10.4 Preliminary operations 10.5 Standard multivariate “s” method procedures for independent quality characteristics with combined control Table 23 – Sample sizes for the “s” method and the “σ” method with AQL = 1,0 |
| 68 | Table 24 – Sampling plans for the “s” method |
| 70 | Table 25 – Values of an |
| 72 | 10.6 Standard multivariate “σ” method procedures for independent quality characteristics with combined control |
| 73 | Table 26 – Sampling plans for the “σ” method |
| 74 | 10.7 Procedure during continuing inspection 10.8 Normality and outliers 10.9 Records 10.10 Normal, tightened and reduced inspection (see also 5.12) |
| 75 | 10.11 Discontinuation and resumption of inspection Table 27 – Supplementary acceptability constants for qualifying towards reduced inspection |
| 76 | 10.12 Switching between the “s” and “σ” methods Table 28 – Values of cU for upper control limit on the sample standard deviation |
| 77 | 10.13 Consumer protection 10.14 Operating characteristic curves Figure 7 – OC curves for normal inspection, AQL = 1,0 |
| 78 | Figure 8 – OC curves for tightened inspection, AQL = 1,0 Table 29 – Tabulated values of OC curves for normal inspection, AQL = 1,0 |
| 79 | Figure 9 – OC curves for reduced inspection, AQL = 1,0 Table 30 – Tabulated values of OC curves for tightened inspection, AQL = 1,0 |
| 80 | 10.15 Consumer’s risk (CR) Table 31 – Tabulated values of OC curves for reduced inspection, AQL = 1,0 |
| 81 | Table 32 – Consumer’s risk quality (CRQ): “s” method Table 33 – Consumer’s risk quality (CRQ): “σ” method |
| 82 | 10.16 Producer’ risk (PR) Table 34 – Producer’s risk (PR): “s” method Table 35 – Producer’s risk (PR): “σ” method |
| 84 | Annex A (normative) Random numbers Table A.1 – Random numbers |
| 87 | Annex B (normative) Procedure for obtaining s or σ |
| 88 | Bibliography |
