Pages from Generator Test Report - Westinghouse.pdf
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- Attached to
- Fort Randall Major Unit Rehabilitation Project
- Solicitation number
- W9128F21R0005
About this file
This document contains a federal contract solicitation and related technical test report. The solicitation is for the Fort Randall Major Unit Rehabilitation Project for the rehabilitation of hydroelectric generating units. The solicitation closes on March 25, 2021 at 2pm Central time and is open to both large and small businesses. An updated site visit is scheduled for January 12-13, 2021 beginning at 9am to allow inspection of dewatered units, penstocks, generators with removed hatches and covers, and spare parts in a warehouse. Contractors must RSVP with attendee names and preferred date by December 22 and identify any non-US citizen attendees by December 17 to obtain approval. The approved site visit date will be provided to contractors by December 28 to facilitate travel arrangements. The technical test report provides performance test results for a generator, including overspeed, braking, excitation and efficiency test data recorded between December 1954 to December 1954.
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· - 44.A-
1 . Overspeed Test
Unit No. 1
Date 12- 16- 54
Hydrostatic head (Ft.) 108.96 1
Maximum speed l67 . 83
Speed for 5 minutes 166.60
12- 16- 54
108.41 1
166 . 7
165.26
2 . Main Exciter Rheostat Travel Time
Unit No. 1 2
Travel time in Seconds 25 24
12-17-54
108.44 1
167.7
166.48
3 - Operation Test of Pilot Exciter Field Reducing Relay
Unit No .
Pick- up volts
Drop- out volts
286'
12- 17-54
107.94 1
I{;,7 .17
166.57
4. Braking time to stop machine safely from half speed to zero speed with the turbine gates fully closed and with main exQiter field open.
Unit No . 1 2 3 4
Time in seconds 93 11 110 11 86 11
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RETARDATION TEST SUMMARY
A. Friction & Winda~e
Run No . 1 6 12 · Average
223.8 232.8 248 . 0 234 . 9
B. Core Losses
Run No . 2 3 4 5
·rerminal Vol ts 15013 13812 12559 11012 ~ain Exciter Volts 118 . 4 1102 . 2 88.4- 74.2 ~ain Exciter Amps . 619 530,9 452 . 8 382.7
·rotal kw Input 624 . 4 542.0 478.o 416.0 F,1;W 235 . 0 235.0 235 . 0 235 . 0 Exciter Output 73 -3 54.3 40.0 28.4 Exciter Losses .
•, 7.6 , 6 . O 4 . 8 3 . 5 Total
315 . 9 295,3 279 . t5 2bb,9 -
Core Loss 30~ . 5 246.7 19t5 , 2 149.1 c . Stray Load Losses
Run No . 7 8 9 10 11
Line Amperes _2637 2195 1765 1323 881 ~'Ile.in Exciter Volts 116 97. 8 78. 6 59 . 6 40 . 8 ::'lain Exci t;er Amps 604 502.5 403 301 .5 201
Total kw Input 903 . 0 701.2 536.5 406.0 310.3 P&W 235 . 0 235 . 0 235 . 0 235.0 235 . 0 e~ator I 2R @ 30 . 3°c 340 . 0 235 . 6 152.3 85.6 38.0 Exci ter Output 70.0 49.1 31.7 18 . 0 8.2 Exciter Losses 7 . 0 5.6 4.1 3.0 2.0
Total b52.0 525.3 423.1 341.b 2t53.2 Stray Load Loss 251.0 175.9 113.1+ b1t.4 27.1
- 27-
EFFICIENCY C0MMPUTATIONS
Efficiency at 95% Power Factor
Percent Load 25 50 75 100 115
A. C. Terminal Volts 13800 13800 13800 13800 13800 Line Amperes 1+40 880 1320 1760 202t.!- Field Amperes 578 646 724 1jl9 ljlj0
Friction & Windage *1 l76.3 l 7b . 3 176 , 3 170. 3 17b ,3 Core Loss 245 . 0 245.0 245 . 0 2~5 . 0 245 . 0 Stator ICR Loss@ 75vc 11. l 44.2 99 . 5 176 . 8 233.lj
------- Stray Load Loss@ 30.3vc 8 . 0 27 . 1 64.4 113.4 150.0 Field rcR Loss@ 75vc 73.8 92 . 2 115 .8 148. 2 171 . 1
Total Genera·tor Loss 514.2 51j4 ."8 701 . 0 559 . 7 970.2 Output 10000 . 0 20000 . 0 30000 . 0 lJ.0000 . 0 46000.0 Input 10514 . 2 20584.8 30701 . 0 40859-7 lJ.6976.2 Percent Losses 4 . 89 2 . 84 2 . 215 2.10 2.08 Percent Efficiency (Test) 95 . 11 97 . 16 97. 72. 97 . 90 97 . 92 Percent Effici ency (Guar . l 93.95 96 . 50 97.10 97 . 30 97.30
Efficiency at 100% Power Factor
Percent Load 25 50 75 100 115
A. C. Terminal Volts Line Amperes ii'ield Amperes
Frj_ction & Win
R Loss@ d Loss@
Total Generator Loss l
Percent Losses Percent Efficienc Percent Efficienc
*1 Includes Fricti on & Windage of the main and pilot exciters .
-28-
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