BS EN 60034-2-1:2007:2008 Edition
$215.11
Rotating electrical machines – Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
| Published By | Publication Date | Number of Pages |
| BSI | 2008 | 78 |
Establishes methods of determining efficiencies from tests, and also specifies methods of obtaining specific losses. Applies to d.c. machines and to a.c. synchronous and induction machines of all sizes within the scope of IEC 60034-1
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | English CONTENTS |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 14 | 4 Symbols and abbreviated terms 4.1 Symbols |
| 15 | 4.2 Additional subscripts |
| 16 | 5 Basic requirements 5.1 Direct and indirect efficiency determination 5.2 Uncertainty |
| 17 | 5.3 Preferred methods |
| 18 | Table 1 – DC machines |
| 19 | Table 2 – Induction machines |
| 20 | Table 3 – Synchronous machines |
| 21 | 5.4 Power supply 5.5 Instrumentation |
| 22 | 5.6 Units 5.7 Resistance |
| 23 | 6 Test methods for determination of efficiency 6.1 State of the machine under test and test categories Table 4 – Reference temperature |
| 24 | 6.2 Excitation circuit measurements 6.3 Direct measurements |
| 25 | Figures Figure 1 – Sketch for torque measurement test Figure 2 – Sketch for dual supply back-to-back test (for synchronous machines: IM = IG, fM = fG) |
| 26 | 6.4 Indirect measurements |
| 27 | Figure 3 – Sketch for single supply back-to-back test, d.c. machines |
| 28 | Figure 4 – Sketch for single supply back-to-back test, synchronous machines |
| 32 | Figure 5 – Induction machine, T-model with equivalent iron loss resistor |
| 33 | Figure 6 – Sketch for single supply back-to-back, additional losses, d.c. machines |
| 36 | Figure 7 – Eh-star test circuit |
| 38 | 7 Determination of efficiency (direct current machines) 7.1 Determination from direct measurement 7.2 Determination from indirect measurement |
| 43 | 8 Determination of efficiency (induction machines) 8.1 Determination from direct measurement Table 5 – Multiplying factors for different speed ratios |
| 44 | 8.2 Determination from indirect measurement |
| 47 | Figure 8 – Vector diagram for obtaining current vector from reduced voltage test |
| 50 | Figure 9 – Induction machines, reduced model for calculation |
| 52 | Figure 10 – Smoothing of the residual loss data |
| 54 | Figure 11 – Assigned allowance for additional load losses PLL, induction machines |
| 55 | 9 Determination of efficiency (synchronous machines) 9.1 Determination from direct measurement |
| 56 | 9.2 Determination from indirect measurement |
| 62 | Annex A (normative) Correction of dynamometer torque readings |
| 64 | Annex B (normative) Calculation of values for the Eh-star method |
| 67 | Annex C (informative) Types of excitation systems |
| 68 | Annex D (normative) Other test methods |
| 70 | Figure D.1 – Method of the chord Figure D.2 – Method of the limiting secant |
