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BS EN IEC 60034-2-2:2024

BS EN IEC 60034-2-2:2024

$167.15

Rotating electrical machines – Specific methods for determining separate losses of large machines from tests. Supplement to IEC 60034-2-1

Published By Publication Date Number of Pages
BSI 2024 40
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IEC 60034-2-2:2024 applies to large rotating electrical machines and establishes additional methods of determining separate losses and to define an efficiency supplementing IEC 60034‑2‑1. These methods apply when full-load testing is not practical and results in a greater uncertainty. The specific methods described are: – Calibrated-machine method. – Retardation method. – Calorimetric method. – Summation of losses for permanent magnet excited synchronous machines. This second edition cancels and replaces the first edition published in 2010. This edition includes the following significant technical changes with respect to the previous edition: – Layout and procedures aligned with IEC 60034-2-1 and IEC 60034-2-3. – Annex A added: an informative procedure for the summation of losses for large permanent-magnet excited synchronous machines.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
8 FOREWORD
10 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols and abbreviated terms
4.1 Symbols
12 4.2 Additional subscripts
5 Basic requirements
5.1 Direct and indirect efficiency determination
5.1.1 General
5.1.2 Direct
5.1.3 Indirect
13 5.2 Uncertainty
6 Additional test methods for the determination of the efficiency of large machines
6.1 General
6.1.1 Overview
Table 1 – Additional methods for large machines
14 6.1.2 Efficiency
6.1.3 Total loss
15 6.2 Method 2-2-A – Calibrated machine
6.2.1 General
Figure 1 – Efficiency determination according to method 2-2-A
16 6.2.2 Test procedure
6.2.3 Direct efficiency determination
17 6.2.4 Determination of separate losses
6.3 Method 2-2-B – Retardation method
6.3.1 General
18 Figure 2 – Efficiency determination according to method 2-2-B
19 6.3.2 Test procedure
21 6.3.3 Determination of deceleration and retardation constant
Figure 3 – Method of the chord
23 6.3.4 Determination of separate losses
24 6.4 Method 2-2-C – Calorimetric method
6.4.1 General
25 Figure 4 – Efficiency determination according to method 2-2-C
26 6.4.2 Calorimetric instrumentation
Figure 5 – Reference surface
27 Figure 6 – Four coolers connected in parallel, single calorimeter, single coolant
28 Figure 7 – Series connected coolers, two coolants
Figure 8 – Bypass piping
29 6.4.3 Test procedure
Figure 9 – Parallel piping
30 6.4.4 Determination of losses
31 Figure 10 – Characteristics of pure water as a function of temperature
34 Annex A (informative) Summation of losses for permanent-magnet synchronous machines
A.1 General
A.2 No-load test with magnetized rotor
A.3 No-load test with unmagnetized rotor
35 A.4 Iron losses
A.5 Test with rotor removed
36 A.6 Rated stator winding losses and additional load losses
37 A.7 Total losses
38 Bibliography

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BS EN IEC 60034-2-2:2024
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