accelerated distribution demonstration system

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9003280231 DOC.DATE: 90/03/21 NOTARIZED: NO DOCKET # FACIL:50-269 Oconee Nuclear Station, Unit 1, Duke Power Co. 05000269

50-270 Oconee Nuclear Station, Unit 2, Duke Power Co. 05000270 50-287 Oconee Nuclear Station, Unit 3, Duke Power Co. 05000287

AUTH.NAME AUTHOR AFFILIATION TUCKER,H.B. Duke Power Co. RECIP.NAME RECIPIENT AFFILIATION

Document Control Branch (Document Control Desk)

SUBJECT: Advises that motors will start & accelerate to rated speed at predicted worst.case voltage conditions.

DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR ENCL SIZE: S TITLE: OR Submittal: General Distribution

NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL

PD2-3 LA 1 1 PD2-3 PD 1 1 WIENS,L 5 5

INTERNAL: ACRS 6 6 NRR/DET/ECMB 9H 1 1 S NRR/DOEA/OTSB11 1 1 NRR/DST 8E2 1 1 .1 NRR/DST/SELB 8D 1 1 NRR/DST/SICB 7E 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC/LFMB 1 0 OGC/HDS2 1 0

FIL 01 1 1 RES/DSIR/EIB 1 1

EXTERNAL: LPDR 1 1 NRC PDR 1 1 NSIC 1 1

R

I

D

S

D

NOTE TO ALL "RIDS" RECIPIENTS: S

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P1-37 (EXT. 20079) TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 27 ENCL 25

Duke Power Company HAL B. Tucker P 0. Box 33198 Vice President Charlotte, NC. 28242 Nuclear Production

(704)373-4531

) DUKE POWER

March 21, 1990

U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Subject: Oconee Nuclear Station Docket Nos. 50-269, -270, -287 RBS and HPI Overcurrent Relays TAC Nos. 73399/73400/73401

Gentlemen:

By a letter dated February 21, 1990, I had provided additional information concerning the High Pressure Injection Pump and Reactor Building Spray Pump motor overcurrent relay settings. My February 21, 1990 letter had attached a February 6, 1990 Westinghouse letter but did not include the curves that were provided by the Westinghouse letter. Accordingly, please find attached the Westinghouse letter with the curves.

Further, the information provided by my February 21, 1990 letter stated that the analysis of the data was "...from an actual test performed by Westinghouse on a HPI pump motor in 1974." The 1974 test performed was of an actual motor that was installed at Oconee.

Based on the above information and that provided by my February 21, 1990, it is concluded that these motors will start and accelerate to rated speed at the predicted worst case voltage conditions with no adverse effect upon the motors performance and/or life.

Very truly yours,

B. Tcker

PFG102/td

cc: Mr. S. D. Ebneter Regional Administrator U. S. Nuclear Regulatory Commission - Region II 101 Marietta St. NW Suite 2900 Atlanta, GA 30323

Mr. L. A. Wiens Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555

Mr. P. H. Skinner NRC Resident Inspector Oconee Nuclear Station

-s'. OCONEE ENGINEERING DIVIStUIkjj R ECE IVED)

R ECElv-1 VE VU Oconee Station Support Section Referred To FEB 1 2 1990 -----11990

FEB 1 1 1990 DIVISIONICEN4TRAL RE[M Handle By

Westinghouse Energy Systems He No.:____ Nuclear Servic bikey' & Comrnsnt By Electric Corporation Dox Fturn Commnts To

Box 355 Pittsburgh Pe lparn i To ___I

[j Prepare For Signature

CP-DCP [-u Prior To Response

~o:solicefa Responso For

SCoPY DLa On Response A ion itern 1'jurn.er Route To Reiturn To

February 6, 1990

Duke Power Co. 422 South Church Street Charlotte, NC 28242

Attn: B. L. Peele

Subject: Duke P.O. T52431-76, W G.O. CH16957 DE File: 83440314.00-00-1006-01 Oconee Station

Please find attached the motor curves requested by the subject purchase order. We have also included curves for 90 and 80 percent along with a thermal limit curve.

The 65% curve illustrates that the motor will not lock up at this value.

Please contact me if I can be of any further assistance.

Regards,

Les Bollinger Domestic Customer Programs

Art Anderson Mechanical Equipment

crb

cc: Mary Richardson W Charlotte

"The mission of N.SD is to provide our customers with people, equipment, and services that set the standards of excellence in the nuclear industry."

WESTINGHOUSE ELECTRIC CORPORATION HEAVY INDUSTRIAL MOTOR PARTS SUPPORT CENTER

ROUND ROCK, TEXAS

HINESC ENGINEERING REPORT ER 90-004

DATE: February 5, 1990

SUBJECT: Study to develop Speed-Torque and Thermal Limit curves for motor S.O. 68F20801.

DISTRIBUTION: Westinghouse Electric Corporation Energy Center Attn: A.A. Anderson ECW-342 Northern Pike Road Monroeville, Pa. 15146

ABSTRACT: Speed vs. Torque, Current, and Time as well as Thermal Limit curves were developed for this unit over the range of 65% to 100% voltage.

ATTACHMENTS: Speed-Torque curves DMCO2059OC-1 through C-14 Thermal Limit curve DMCO2059OC-15.

Duane McEachron Manager, Engineering Heavy Industrial Motor Parts Support Center Round Rock, Tx

DISCUSSION:

Performance calculations were made on motor S.O. 68F20801 using Westinghouse Proprietary design program ME7337 to develop data for Speed-Torque and Thermal Limit curves for voltages down to the minimum voltage at which the motor would start. Calculations were based on the original design using a load inertia of 32 lb-ft2 and the 600 psig reactor pressure valve open curve from Babcock and Wilcox load torque curve HH 42868 dated April 23, 1968. These calculations indicated that the motor would not start the load at voltage below 84% of rated voltage.

Further investigation showed that this design had been tested for torque and current at Buffalo on S.O. 74L10298 in June of 1974. The test data indicated considerable different performance than calculated data. The test data was assumed to be more accurate and was used to generate the attached curves. T he test data was taken only at 80% voltage so multipliers were developed from the design progrmcluain o l te otgs

INDUCTION MOTOR STARTING CHARACTERISTICS (C".ULATED) AT 100% LINE VOL E

CUSTOMER DUKE POWER APPLICTION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF" 0.091 FL AMPS 75.2 LOCKED AMPS(%) 912 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 215 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

11163 SEC.

0.----. ---- --- ---.. ..... -.. ... ... .

0. -.--- ----. --- ........ .. .............

0.7- -------- --------- . ---------- - --------- -.---.. ----------------

UHRENT ACqEL TI E

0.7 -- 4-- ------ ---- ----- .. -----

L ADT(

0.5 ----------------------- ------------------- ------ -- --- I

0.2 - ....------- - -

OTOR UR ci4

0.--------------------------- ------- -----..........................

0.1 - ---------.. ... . ..I------- --- --4 ... ...I---- -- -.. ..-.-...

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 CURRENT (P.U. RATED)

0 1 2 3 TORQUE (P.U. RATED)

0 12 3

TIME (SECONDS)

WESTINGHOUSE HIMSC, ROUND ROCK, TEXAS

SIGNATURE DATE - '/0 CURVE DMCO2059OC- I

- INDUCTION MOTOR STARTING CHARACTERISTICS ( CULATED) AT 90% LINE VOL3E

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 803 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 167 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

:2.22 SE

0.7 - ----- ------ ---- . -.... .. ... .. . .. . ..

0.7 ------ ... .- -- - -CUMENT

0.6 ------- -- -- --- - - - - ----.-....-...-....-...-

LOAD TO

0.1-------4-I.------4------------------------

- ACCEL TIME!

MOTOR TO

0.2 . -. .. .. . . . .. ..... ...... r.. .... ........ - -- .... .. .... 4- - -....r. ... .. ...... .... .

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5

CURRENT (P.U. RATED) 0 1 2 3

TORQUE (P.U. RATED) 0 1 2 3

TIME (SECONDS)


SIGNATURE . DATE - -- 5 o CURVE DMCO2059OC-

INDUCTION MOTOR STARTING CHARACTERISTICS ( CULATED) AT 80% LINE VOL E


3.6 SEC.:

0. ------- - -- ----- ----- ------ ------------ . .--- ----..

0.~-- ---- --- -----.. .-.. ..-.. .. .. ..

0

0.----------------- -------------- . -------- -------- - - --

0.------ ----- ...... .......... .......---:ACCETMEI (MOTOSCTON

o 0.5 1 1.5 2 2.5 3 3.5 14 4.5 1 5 5.5 1 6 6.5 7 7.5 CURRENT (P.U. RATED)

O0 2 3

TORQUE (P.U. RATED)

O 1 2 3 4

TIME (SECONDS) WESTINGHOUSE HIMSC, ROUND ROCK, TEXAS

SIGNATURE m DATE -- - 9 o CURVE DMCO2059OC- 3

INDUCTION MOTOR STARTING CHARACTERISTICS VLCULATED) AT 75% LINE VOLT1

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 646 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 108 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SO) 216 FRAME 686.5

4.1 SEC.

CURRENT 0.7- . - - - - ...... ..... ..... ................

-ACCEUTIME

a LO/0 TQ 0

0.4- --- --- ------- L ------- L ----- -- ------- .. . . ....... .. . . .

MOTOR TQ

0. - ---- ...... . .... . .--.- . ...... ...----

0.2 -- - ------ . ... ...... .. .. ....... . . .

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7

CURRENT (P.U. RATED)


0 1 2 3 4 TIME (SECONDS)


SIGNATURE DATE -CURVE DMCO2059OC-

INDUCTION MOTOR STARTING CHARACTERISTICS *LCULATED) AT 74% LINE VOLT*

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.0. 68F20801/74L10298 LOAD CURVE HH42868 IP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 636 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 105 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

:4.40 SE -. I

0.- ------------ - ----- ...... ................. ....... .............

ACCE L TIME URE

0.6 --------- ---- --- q-------- f ------ - -- -- I -...-- .. .. . ...... 4 ..- .. .......- .....--- q...-- - - .. . ..

LO TQ

vOTOR TQ

0.........- ........................... ....... -------- -------- 4-------- -------- ------- -------- -------------------------0.2 - .- -- - - - - - ------- ------- ------- 4. . .......- .. .. . ........ ....... ....... ....... ....... --- --- I. -- - --

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 CURRENT (P.U. RATED)


0 1 2 3 4


SIGNATURE DATE 2 - C CURVE DMCO2059OC- T


.CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 625 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 101 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

4.67 $EC.

ACCHL TIME 0.6 ------------- --- ------- - .... ...- .. ---- U E

LOA TQ 0

MOTORTQ

0. -------- ------- ....... ....... ........ . ........

0 0.5 1 1.5 2 2.5 3 3.5 4.5 5 5.5 6 6.5 CURRENT (P.U. RATED)


0 1 2 3 4

TIME (SECONDS)


SIGNATURER4 DATE 2.-7-)o CURVE DMCO2059OC-


CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 H' 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 615 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 98 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SO) 216 FRAME 686.5

1 "

:4.97 SE C.

ACc EL TIM~ CUR N

0.8 - ----- --- - --- ----- -- ----------- --- - - - -. .

o-

0.--- -- - .. ----- ------ ---- ------ ----- ...-- ---------

0 .7 --- -. .- ....... ... ... ...... .. .--------------- ---- -------

CURRENT (P.U. RATED)

O 1 2 3 TORQUE (P.U. RATED)

O 1 2 3 4 TIME (SECONDS)


S GNATURE_ _______ __ _ _ -_ CURVE DMCO20590C- 7

INDUCTION MOTOR STARTING CHARACTERISTICS #LCULATED) AT 71% LINE VOLT9


1

0.9* - -- --- ---------- ---- -- ....... .... ...... - --- - - --....... ..... -- - - - - --I- - - - ...... E

MOTOR TO

ACELTIM CURR NT

z LOAb TQ

0. - ---- - - -------- . ....- ......- ..- ----- ------- --------4 ------ ------- ---------------

0. -- -.-- - ..... ...... . ....... ...... .. .... ....... .... .. .- - .- - - - - -- - - - - - - - - - -

0.2- -- - - - .... .. ...... ...... .....-- --- ------- ------ ------ - ---- --..- ...----- - ..... ..........

0 0.5 1 1.5 2 2.5 3 3.5 4 4 4.5 5 5.5 6 6.5 7 CURRENT (P.U. RATED)


0 1 2 3 4 TIME (SECONDS)


SIGNATURE _______________DATE '2- CURVE DMCO2059OC- 8

. INDUCTION MOTOR STARTING CHARACTERISTICS *LCULATED) AT 70% LINE VOLT*

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 MiP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 595 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 92 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

5.69 EC.

EL TIM CURR NT

LO TOM

0.4 -------- --- ----f ------- ------- ------- ---------------- ------- ------- ------- f----- -- -- ---- ------- ......-

0.5 ------ -- --- ------- ---- ------ -------------- ------- ------- ------- ------- ----- - ------- --.....

001 2.a

001a a

0.------- -- ------- ------- ------ ----- ...........-------------.......

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 CURRENT (P.U. RATED)

TORQUE (P.U. RATED)

O0 2 3 4

TIME (SECONDS)


SIGNATURE _ _ _ _ _ DATE 2 - 5-1 0 CURVE DMCO2059OC-

. .. INDUCTION MOTOR STARTING CHARACTERISTICS *LCULATED) AT 69% LINE VOLT&

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.O. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VQLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 585 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 88 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

- 1

0.9 --- ----- -------- ------- * -1 - ** ------ --- * **------- ------- .. . .-- ------- ------

0.7-~~~- -- --- --- - - - -- - . . .. . . .. . . .. ...... .- ---..- -

CURRENT

ACCE TIME z ~ LOb TO

0.3 ------ .. .. --- --- ------- ........ ...... - - - -....... r ....... ....... - ....... 4..... .

) 0.5 1 1.5 2 2.5 1 3 3.15 4 4.5 .5 5.5 6 6.5 7 CURRENT (P.U. RATED)

0 12 3 TORQUE (P.U. RATED)

0 12 3 4 TIME (SECONDS)


SIGNATUREE DATE - -- / 0 CURVE DMCO2059OC-

INDUCTION MOTOR STARTING CHARACTERISTICS CULATED) AT 68% LINE VOLT

-CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S0. 68F20801/74L10298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 573 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 85 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

6.74S .

0.9 ... . -. ..--.- .... --- .- ....... . .. ....... ... .. ... ... ...

MCTORTO 0.7 ----- --- ------- ----- -- ------------- ......- ...-- ..-.. .... --- --

C RRENT a

- ACC L TIME 0 : LO4 TQ 0

P40 1. 2........ .3..

WESTNGHUSEHIMCEN ROUD ROCKTEXA

S GNATURE DATE I - CURVE DMCO20590C-

INDUCTION MOTOR STARTING CHARACTERISTICS #LCULATED) AT 67% LINE VOLT#

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON S.0. 68F20801/74L10298 LOAD CURVE HH42868 UdP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 565 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 82 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

1~

7.39 EC

ACCL TIME 0.7 -----------.......--- ...- ..--

CURRE 0.6 --------- i -- --I ----- -- ....... ..-- -...-- -- -

oz LOAD OQ

0 0.5 1 1.5 2 2.5 3 35 4 4.5 5 5.5 6 CURRENT (P.U. RATED)


O 2 4 6 8 10

TIME (SECONDS)


SIGNATURE DATE 2 - -90 CURVE DMCO2059OC-

INDUCTION MOTOR STARTING CHARACTERISTICS LCULATED) AT 66% LINE VOLT*

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON 9O. 68F20801/74L1 0298 LOAD CURVE HH42868 HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 554 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 80 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

8.19 SE .

0.8 -**------ -------------- ----- - - ---- ------- -------- -------- ... ......... .................. ........

ACCEl TIME 0.7 -------- ---------- ---.- ... .. . ......- ....... .-...-.. --- ----- ---. ------- ---.- ----.- --

CURREr

z ~LOAD tQ MOT()R TO

0.4 -------- - ----- -I -- --. --....... -........ ......... ........- ........ . ... L. ---- ---. 1 ....

0.2 -- ------- -------- --- -----. ........ ... .. ........-- -------------........ 4 ---........

0.2 -- ----- 4- ------- -------- --------- r -------- -------- ----------------- ------- - - --- -- - ---.. -......

0 0.5 I 1 1.5 I 2 I 2.5 3 3.5 4 4.5 5 5.5 6 CURRENT (P.U. RATED)

0 2 3

TORQUE (P.U. RATED) 0 2 4 6 8 .10


SIGNATURE DATE 1 -CURVE DMC020590C-/ 3

INDUCTION MOTOR STARTING CHARACTERISTICS V *LCULATED) AT 65% LINE VOLT*

CUSTOMER DUKE POWER APPLICATION INJECTION PUMP DRIVE ENGR D. MCEACHRON .0. 68F20801/74L10298 LOAD CURVE HH42868

HP 600 VOLTS 4000 PH 3 HZ 60 POLES 2 RPM(FL) 3587 PF 0.091 FL AMPS 75.2 LOCKED AMPS(%) 544 RPM(SYN) 3600 FL TORQUE (LB-FT) 878 LOCKED TORQUE (%) 77 LOAD INERTIA (LB-FT-SQ) 32 MOTOR INERTIA (LB-FT-SQ) 216 FRAME 686.5

9.31 S.C.

ACCE TIME 0.7 ----------- ------ .- .. . .-. . . ...-- ...--- .- .- ... --- --- -- --- ---- ---- --------

:CURRE 0. r---------- ---- --- --------- ------- . ..--------- --------- ------------ .... -- ----- ---------- -..--..rJ)

0# zLOAD Q 0

MOTQRTQ 0.5 --------- -------- --- ---- ---.... -....-... ........ ---- -- . .. ... ..... -- ---.-- ---- --- - ---

0.2 - - -- -- ........ ....... ....... r- --- ......... ------- -- ---- ------- -------- ----------- ------ - --------

0.1 . ------. -------- -------- - ------- -------- --------- I -------- ---------1 --------- --------- -------- --------

C-0)

0 0.5 I 1.5 2 25 3 35 4 455 5.5 6 CURRENT (P.U. RATED)

0 2 3 TORQUE (P.U. RATED)

0 2 4 6 8 10 TIME (SECONDS


SI(NA1LFE -V;4E a-- D- rUFRE )MC02C59D(-

CALCULATED TIME-CURRENT THERMAL LIMIT MOTOR S.O. 68F20801/74L10298

0000

RU N NG 9VERLpAD 10000 -T --- --

_ _o -_ - -- i

1070

e-

rVOL

______ I _

on 75. OLTAG o

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 CURRENT (P.U. RATED, 1 PU =--75.2 AMPS)

ESTINGHOUSE HIMSC, ROUND ROCK, TEXAS

TCURVE DMC20590C- /-

accelerated distribution demonstration system

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