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eLibrary > BS EN IEC 60034-2-2:2024 Rotating electrical machines - Specific methods for determining separate losses of large machines from tests. Supplement to IEC 60034-2-1 >

BS EN IEC 60034-2-2:2024 Rotating electrical machines - Specific methods for determining separate losses of large machines from tests. Supplement to IEC 60034-2-1, 2024

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

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