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BS EN IEC 60034-33:2022

BS EN IEC 60034-33:2022

$198.66

Rotating electrical machines – Synchronous hydrogenerators including motor-generators – Specific requirements (IEC 60034-33:2022)

Published By Publication Date Number of Pages
BSI 2022 60
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PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
8 English
CONTENTS
12 FOREWORD
14 1 Scope
2 Normative references
15 3 Terms and definitions
17 4 Site operation conditions
5 Ratings and parameters
5.1 Output
5.1.1 Output rating of a hydrogenerator
5.1.2 Output ratings of a motor-generator
5.1.3 Increase in active power
5.1.4 Under-excited operation
18 5.2 Rated voltage
5.3 Rated power factor
5.4 Rated speed
5.5 P-Q capability diagram
Tables
Table 1 – Preferred speed for 50 Hz machines
Table 2 – Preferred speed for 60 Hz machines
19 5.6 Voltage and frequency variations during operation
Figures
Figure 1 – P-Q capability in p.u.
20 Figure 2 – Voltage and frequency limits for hydro machines
21 5.7 Efficiency and losses
5.7.1 Weighted average efficiency
5.7.2 Losses
22 5.7.3 Determination of winding losses
5.7.4 Windage Losses
5.7.5 Determination of thrust bearing losses for vertical machines
Table 3 – Reference temperature
23 5.7.6 Tolerance of the total losses
5.8 Electrical parameters and time constants
5.8.1 Short-circuit ratio
5.8.2 Direct axis transient and subtransient reactances
24 5.8.3 General case
5.9 Tolerances on reactance
5.10 Total harmonic distortion (THD)
5.11 Torques
6 Temperature
6.1 Temperature rise
25 6.2 Measurements for the stator winding
Table 4 – Temperature rise limits
26 6.3 Measurements for the stator core
6.4 Correction due to deviation from reference operation
27 6.5 Bearing temperature
7 Operating performances and electrical connections
7.1 Special operational requirements
7.1.1 Stator overload current
7.1.2 Rotor overload current
7.1.3 Continuous unbalanced load
Table 5 – Permitted overload current multiple vs. time duration
28 7.1.4 Short time unbalanced load
7.1.5 Mechanical output overload
7.1.6 Sudden short circuit
Table 6 – Permitted negative phase sequence current for the machines
Table 7 – Permitted negative phase sequence current for the machines
29 7.2 Connection to grid
7.2.1 Synchronization
7.2.2 Application of load
7.3 Starting of motor-generator
30 7.4 System earthing
Table 8 – Material properties for grounding connectors
31 7.5 Neutral point leads
7.6 Rotating direction and phase sequence
7.7 Stator winding
8 Winding insulation
8.1 Winding insulation performance
8.1.1 General
8.1.2 Winding insulation resistance
32 8.1.3 Dielectric dissipation factor measurements on new stator bars or coils
Table 9 – Test voltage for insulating resistance measurement
Table 10 – Dielectric dissipation factor
33 8.1.4 Partial discharge measurements for stator winding
8.1.5 Voltage withstand test for turn insulation of multi-turn coil for stator
8.2 Voltage withstand tests
8.2.1 Stator bars/coils
8.2.2 Inserted stator bars/coils
8.2.3 Stator winding completed before rotor inserted
8.2.4 Field winding before delivery
34 8.2.5 Field winding completed
8.2.6 Stator winding for completed machine
8.2.7 Field winding for completed machine
8.2.8 DC alternative tests
8.2.9 Global VPI stators
8.3 Breakdown test for insulation
Table 11 – Testing values for voltage withstand test of field winding
35 8.4 Voltage endurance test for insulation
Table 12 – Test voltage and time limits
36 8.5 Thermal cycle test
8.6 Stator winding terminals
9 Mechanical performances and design
9.1 Rotating part mass moment of inertia
9.2 Maximum speed
9.3 Structural strength
37 9.4 Critical bending speed
9.5 Start and stop of motor-generators
9.6 Start and stop of hydrogenerators
9.7 Over speed
38 9.8 Fatigue verification
10 Core vibration
11 Noise
Table 13 – Limits for vibration in the core
39 Figure 3 – Location of measuring points in the horizontal plane
40 12 Basic structural requirements
12.1 General layout
12.1.1 Structure and general layout of the machines
12.1.2 Machine components
12.1.3 Hydraulic or pneumatic braking system
12.1.4 Hydraulic jacking system
12.1.5 Dynamical (electrical) braking
12.2 Stator
12.2.1 Frame and core structure
41 12.2.2 Stator frame connecting structure
12.2.3 Stator end winding
12.3 Rotor
12.3.1 Damper winding
12.3.2 Structure with one shaft or segmented shafts
12.4 Structure tolerance
12.5 Bearings
12.5.1 Bearing alloy
12.5.2 Bearing lubricant
12.5.3 Shaft currents
42 12.5.4 Bearing insulation resistance
13 Ventilation and cooling system
13.1 Cooling scheme
13.1.1 General
13.1.2 Air cooling system
13.1.3 Evaporative cooling system
13.1.4 Water cooling system
43 13.2 Redundancy on the design of coolers and motor fans
13.3 Cooling structure
13.3.1 Materials
13.3.2 Water supply and drainage
13.3.3 Cooling water pressure
14 Instrumentation required for protection and control
14.1 General
14.2 Stator and bearing temperature
44 14.3 Bearing vibration and shaft displacement
15 Condition monitoring of machines
15.1 General
Table 14 – Temperature sensor locations
45 15.2 Instrumentation required for condition monitoring
16 Marking
16.1 Information to be marked on machine nameplate:
46 16.2 Repaired or refurbished machines
17 Factory and site tests
47 Annex A (informative)Special tools
Table A.1 – Special tools
48 Annex B (informative)Correction of measured windage losses on the machines
51 Annex C (informative)Correction of measured bearing losses for different oil bath temperatures
53 Annex D (informative)Scope of supply
54 Annex E (informative)Test run and guaranteed period
E.1 72 h test run
E.2 15~30-day examination test run for motor-generators
E.3 Handover and guarantee period
55 Annex F (informative)Test items
F.1 Inspection test for hydrogenerator and motor-generator in factory
F.2 Site routine test of hydrogenerator and motor-generator
56 F.3 Startup test run of hydrogenerator and motor-generator
F.4 Performance test of hydrogenerator
57 Annex G (informative)Condition monitoring
G.1 Air gap distance
G.2 Core and frame vibration
G.3 Stator end winding vibration
G.4 Partial discharge
58 G.5 Air gap magnetic flux
G.6 Others
59 Bibliography

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BS EN IEC 60034-33:2022
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