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BSI 24/30494468 DC 2024

$13.70

BS EN 60034-27-8 ED1 Rotating machinery – Part 27-8. Detection of interturn short-circuits in rotor windings of cylindrical rotor synchronous generator

Published By Publication Date Number of Pages
BSI 2024 28
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PDF Catalog

PDF Pages PDF Title
1 30494468-NC.pdf
3 2_2200e_CD.pdf
4 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
8 1  Scope
2  Normative References
3  Terms and definitions
3.1
3.2
3.3
3.4
9 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.
4.1  Impact of inter turn short circuit
4.2  Fault location
10 4.3  Causes of inter turn short circuits
11 5  Test Method Overview
5.1  General Provisions
13 5.2  Test Method Principles
15 6  Detection Methods
6.1  Vibration vs Rotor Current Method
6.1.1 Application Conditions
6.1.2 Test Method
6.2  Air-gap Magnetic Flux Method
6.2.2 Equipment and Instrumentation
6.2.3 Test Conditions and Method
6.3  Excitation Current Amplitude Method
6.3.1 Application Conditions
16 6.3.2 Test Method
6.4  Rotor AC Impedance and Power Loss Test
6.4.1 Test Conditions
6.4.2 Test Instrumentation
17 6.4.3 Test Method
6.5  Recurrent surge oscillograph (RSO)
6.5.1 Test Conditions
6.5.2 Test Instrument
6.5.3 Measurement Method
18 6.6  Pole Voltage and Coil Voltage Drop Test
6.6.1 Test Condition
Generator rotors should be removed from the stator casing during the test.
6.6.2 Test Equipment Required
6.6.3 Test Procedure
20 6.7  Interturn Voltage Distribution Method
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
21 6.7.4 Plotting Fault Location
7  Guidance for Interpreting Results
A.2.1 Two-pole Generator
22 A.2.2 Four-pole Generator
BSI 24/30494468 DC 2024
$13.70