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eLibrary > 24/30494468 DC BS EN 60034-27-8 ED1 Rotating machinery - Part 27-8. Detection of interturn short-circuits in rotor windings of cylindrical rotor synchronous generator >

24/30494468 DC BS EN 60034-27-8 ED1 Rotating machinery - Part 27-8. Detection of interturn short-circuits in rotor windings of cylindrical rotor synchronous generator, 2024

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24/30494468 DC BS EN 60034-27-8 ED1 Rotating machinery - Part 27-8. Detection of interturn short-circuits in rotor windings of cylindrical rotor synchronous generator, 2024

30494468-NC.pdf
2_2200e_CD.pdf [Go to Page]
CONTENTS
FOREWORD 5
1 Scope......................... 8
2 Normative References 8
3 Terms and Definitions 8
4 Background Explanation 11
5 Test Method Overview 17
6 Detection Method 14
7 Guidance for Interpreting Results 20
Annex A (informative) ....21
Annex B (informative)................. ..26
Bibliography 27
1　 Scope
2　 Normative References
3　 Terms and definitions [Go to Page]
3.1
3.2
3.3
3.4
4　 Background Explanation
The winding diagram for a 2 pole rotor is shown in Figure 1, and the cross section of a single single slot on the rotor body showing the winding components is in Figure 2. [Go to Page]
4.1　 Impact of inter turn short circuit
4.2　 Fault location
4.3　 Causes of inter turn short circuits
5　 Test Method Overview [Go to Page]
5.1　 General Provisions
5.2　 Test Method Principles
6　 Detection Methods [Go to Page]
6.1　 Vibration vs Rotor Current Method [Go to Page]
6.1.1 Application Conditions
6.1.2 Test Method
6.2　 Air-gap Magnetic Flux Method [Go to Page]
6.2.2 Equipment and Instrumentation
6.2.3 Test Conditions and Method
6.3　 Excitation Current Amplitude Method [Go to Page]
6.3.1 Application Conditions
6.3.2 Test Method
6.4　 Rotor AC Impedance and Power Loss Test [Go to Page]
6.4.1 Test Conditions
6.4.2 Test Instrumentation
6.4.3 Test Method
6.5　 Recurrent surge oscillograph (RSO) [Go to Page]
6.5.1 Test Conditions
6.5.2 Test Instrument
6.5.3 Measurement Method
6.6　 Pole Voltage and Coil Voltage Drop Test
6.6.1 Test Condition [Go to Page]
Generator rotors should be removed from the stator casing during the test.
6.6.2 Test Equipment Required
6.6.3 Test Procedure
6.7　 Interturn Voltage Distribution Method [Go to Page]
6.7.1 Test Condition
Generator rotors should be removed from the stator casing. If possible, the retaining rings should be removed to make measuring the inter-turn voltages easier.
6.7.2 Test Equipment
6.7.3 Measuring Method
6.7.4 Plotting Fault Location
7　 Guidance for Interpreting Results [Go to Page]
A.2.1 Two-pole Generator
A.2.2 Four-pole Generator [Go to Page]

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24/30494468 DC BS EN 60034-27-8 ED1 Rotating machinery - Part 27-8. Detection of interturn short-circuits in rotor windings of cylindrical rotor synchronous generator, 2024

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