ML20210P605

Rev 1 to Engineering Calculation E4C-098, 4 Kv Switchgear Protective Relay Setting Calculation

ML20210P605
Person / Time
Site:	San Onofre
Issue date:	07/28/1999
From:	James Kim, Lennartz B SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML20210P577	List: ML20210P571 ML20210P593 ML20210P597 ML20210P605
References
E4C-098, E4C-098-R01, NUDOCS 9908130040
Download: ML20210P605 (51)

Text

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ATTACHMENT G ENGINEERING CALCULATION E4C-098 l CALCULATION CIIANGE NOTICE 25 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION i SAN ONOFRE UNITS 2 AND 3 i l

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9908130040 990811 PDR ADOCK 05000361 P PDR l

Southern California Edloon Company C ALC. NO.

PAGE TOTAL NO. OF E4C498 [CCN Nopguu CCN NO. N-15 1 PAGES S O INTERIM CAL.CULATION BASE CALC. REV. UNIT CHANGE NOTICE (ICCNy CCN CONVERSION : CALC.REV.

CALCULATION CHANGE NOTICE (CCN) CALCULATION SWECT :

4 KV SWITCHGEAR PROTECTIVE RELAY SETTif(3 COVER PAGE CALCULATION ENG.NLEH5NG SYSTEM NUMBER i PRIMARY STATION SYSTEM DESIGNATOH OCLASS CALCULATION CFiOSS-INDEX j ,

New/ Updated irufex irx: aded CONTROLLED PHOGRAM OR PROGRAM t DATABASE NAME (S)

Existing indes is complete VERSION / RELEASE NO.(S)

DATABASE ACCORDING TO Sita Programa/Procedu e Impact? SO123 XXIV-S.1 O NO $ YES, AH Na970200708 PROGRAM O o^T^a^se ^'So. 'isTeo ee'ow 1.BRIEF DESCRIPTION OF ICCN / CCN:

This CCN evaluales the setpoints included in CCN 20 to base calculation E4C498 for the following items to support Proposed Chango Number (PCN) 488 to SR 3.3.7.3 & SR 3.3.7.4 of Units 2&3 Technical Specifications:

Loss of voltage relay 127F Degraded bus voltage relay 127D Time delay relay 162D Time delay relay 162S Time delay relay 162T This CCN deleten some lower / upper limit of voltage / time delay, which are not important to safety, from Surveillance requirement INmATING DOCUMENT (DCP. FCN, OTH ER) PCN488 to Units 2&3 Tech. Spec. REV.  !

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2. OTHER AFFECTED DOCUMENTS (CHECK AS APPLICABLE FOR CCN ONLY):

O YES @ NO OTHER AFFECTED DOCUMENTS EXIST AND ARE IDENTIFIED ON ATTACHED FORM 26-503.

1

3. APPROVAL :

DISCIPLINE / ESC : NEDO / Electrical J. Kim/ J (_ 7/w q 9 ORIGIN ATOR ( 's diste)

L J. d W2 4 FLS {Sig witure/date) OTH ER (Signature /date)

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IRE (Pnnt narnetsigrveste) ' ' OTHER (Signature /date) OTH ER (Sipiaturerdale)

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l E&TS DEPARTMENT CCN NOJ CALCULATION SHEET "" "" " 5 "^ " ^- "*-  !

CCN CONVER$ ION:

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Ccn NO. ccN.

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 1

l Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATIOS Sheet of REV ORGreAT OR DAIE 6RE DATE REV ORGINATOR DAIE ist OAig g Jour Kim D. Lennart N !

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1, PURPOSE This CCN evaluates the setpoints included in CCN 20 to base calculation E4C-098 for the following items .

to support Proposed Change Number (PCN) 488 to SR 3.3.7.3 & SR 3.3.7.4 of Units 2&3 Technical Specifications:

(

)

i E Loss of voltage relay 127F M Degraded bus voltage relay 127D E Tirne delay relay 162D  !

5 Time delav relay 162S E Time delay relay 162T i

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l 3Cg 2s.es stry 1 sygn [ REFERENCE. 50123 KKfv-7.15] E4C09 Mat 5 epd j

E&TS DEPAF.TMENT ICCN NOJ CALCULATION SHEET PREUM CCN N . M PA E 4 oF M CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 " ~ '

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet of REV ORGINATOR OATE IRE DAlb REV ORGhATOR DATE AE DATE Joon Kim ti.1.efinariz 6

39 "c

2 RFSULTS/CONCI,USIONS and RECOMMENDATIONS 2.1 Results 2.1.1 Setpoints for Degraded Voltage Function (127D-1,2,3,& 4 relays ABB 27N relay)

Design Lirna Asowable (Aa-found) Values As-lett Values item [TLU = to.89 V (0.737%), (Tot. - to.45 V (0.37%). (setting to - 20.1 V)

Engo. Margin - 0.46 V)] Engin. Margwi = 0.46 V)]

Relay (V) Primary (V) Relay (V) P$ nary (V) Relay (V) Prtrnary (V)

Max. Relay 122.75 4296.25 122.31' 42ecte6* 121.50 4252.50 pd*

Max. Relas 122.14 4274.90 121.70' 4259.50' 120.90 4231 50 dropout Nominal reiay 121.40 4249.00 121.40 4249.00 121.40 4249.00 pick @

Nominal relay 120.80 4228.00 120.80 4228.00 120.80 4228.00 dropout Min. Relay 120.05 4201.75 120.49' 4217.15* 121.30 4245.50 p dup Min. Reay 119.45 4180.75 119.89* 4196.15* 120.70 4224.50 dropout Time delav 2 sec.s e 0.2 sec. 2 sec.s t 0.17 see." 2 sec.s t 0.02 sec. (120 V to o V)

• Revised value from the value in CCN 20 to E4C-098.

2.1.2 Setpoints for Loss of Voltage Function (127F-1,2,3,& 4 relays -

Westinghouse CV-2 relay)

Existing Proposed AnowableValues Acceptable As-Left Tech. Spec. SR 3.3.7.3.b (Acceptable As-Found Values) Setting Values Item Onrall Sattwig (V) Reiay Setting (V) Relay 3etting (V)

TLU Tot. Tel.

Relay Primary Relay Pr';.iary _ Relay Primary Max. relay 108.47 3796.45 108.47 3796.45 100.05 3711.75 dropond Narninal relay t3.3 105.00 3675.00 213 105.00 3675.00 21 105.00 3675.00 dropett (%) (%) (%)

Min. relay drtmout 101.56 3554.60 101.54' 3563.90' 103.95 3638.25 Tirne delav (Ndei 3 0.95 sac and 1.05 anc. 3 0.75 sec. and s 1.0 sec. a 0.782 sec. and s 0.966* sec.

• Revised value from the value in CCN 20 to E4C-098.

sCE 26 426 REV t 89s lREFEmENCE. so123.XXV.f?S: E4Coperin15 wod l

1 1

E&TS DEPARTMENT ICCN NO/

PAcuu. C N N . Nd5 CALCULATION SHEET CCN CONVERSION:

PAGE O OF_g_

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN NO. CCN- hb Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SE'ITING CALCULATION Sheet of REV OACINATOR CATE lAE DAlb HEV 0461NA T OR DATE IRE DATE g Joan IOm D Lennetz $

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=c Note: Time dial of CV-2 relay should be adjusted such that the time delay of the entire LOVS channel up to an including 127F-1X3 and 127F-1X/127F 1X2 is within this tirne range. A LOVS channel consists of relay 127F-1 and auxiliary relays 127F 1X3 and 127F-1X1/127F-lX2 in series. This timing requirement also applies to the LOVS channels associated with relays 127F-2,127F-3, and 127F4 This is the time to go from nominal voltage to zero (120 V to 0 V).

2.1.3 Setpoints for time delay relays for Degraded Voltage Function Existing Proposed Allowable Values Acceptable Tech. S 3ac. SR 3.3.7.3 a (Accglable As-Faind Vahnn) As-Left settiro Asiay TLU Setting Td. Setting Td. Setting

(%) (seconds) (%) (sex:nnes) (sec.) (seconds) 162D-12.3 & 4 120 110 *22 216.4 110 1 18 22 110 22 162S-1,2,3 & 4 t.1.4 4.3 20.19 13.33 4.3 t 0.14 20.05 4.3 20.05 162T-12.3 & 4 232 1.25 t 0.4 *29 87 1.25 t 0.37 2o.05 125 0.05 No change from CCN 20 to calculation E4C 098.

i SCE 26426 REV.1 D9t-(RE85RENCE. sot 2SXXIV,r.15) EaC0Hrin15.wod

E&TS DEPARTMENT ICCNWOJ CALCULATION SHEET "" Em m N-M PaGE 6 OF 50 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECrlVE RELAY SETFJNG CALCULATION Sheet of r4ev osier 4Ai us cart i;4e i oAre l aEv osice44ros i DATE ese unre y Jnon Kim B. Lennart2 bk 1

2.2 Recommendations 2.2.1 Revise Surveillance Recuirements of Technical Spec:fication section 3.3.7 as follows:

Secunn Eosima A!!owsble Valses Recornmended A1)owable Values Degraded Voltage Funcuan a 4181 V and $ Degraded Voltage Furrtson:

4275 V t. Dropout a 4196 V(Note 1) ii Pickup s 4281 V(Note 2)

SDVSS (Sustained Degraded Grid Voltage): SDVSS (Sustauwd Deg nded Gnd Voltage):

SR 3 3.73. a Time delay- Tams delay:

a. 127D a 1.8 secunda and s 2.2 i. 127D s 2.17 secords (Note 3) secornis n. 162D s 128 seconds (Note 3)

d. 162D a 88 secorris and s 132 secords DGVSS (Degraded Grid Voltage wah s! AS DGV55 (Degraded Grid Voltage with STAS):

Signat):

Teme delay:

Time delay: a. 127D a 123 seconds and s 2.17

s. 127D a 1.8 sccormas and s 22 secords secorxis it. 1625 a 4.16 secords and s 4.44

n. 162S a 4.11 seconds and s 4.49 seconds seconds iii. 162T a 02A seconds and s I 62 sia. 162T a 0.85 seconds and s 1.65 socornis seconds SR 3.3.7.3.b 1.oss of Voltage Funcuen a 3554 V and Loss of Voltage Funcoun a 3554 V (Note 1) s 3796 V Tsac delay: s 1.0 seconds at 0 V (Note 4)

Time delay' a 0.95 asconds ard e i.05 accornis at 0 V SR 3J.7.4 Verify Response Time of required DG ti)V Deleted (Note) charuwt is wioun 1.05 secorda Notes:

1. Surveillance of the lower limit of the dropout voltage is important to safety because the operation of the undervoltage relay at the setpoint ensures the protection of electrical equipment from low operating voltage.

2. Surveillance of the upper limit of the pickup voltage is required to verify that the relay will reset at the minimum bus voltage of 4297 V.

3. Surveillance of the upper limit of the time delay is required because only the upper limit of the time delay is important to safety.

4. Time dial of CV-2 relay should be adjusted such that the time delay of the entire LOVS channel up to and including 127F-lX3 and 127F lX/127F-lX2 is within this time range. A LOVS channel consists of relay 127F-1 and auxiliary relays 127F-lX3 and 127F-lX1/127F-1X2 in series. This tirning requirement also applies to the LOVS channels associated with relays 127F 2.127F-3, and 127F-4. This is the time to go from nominal voltage to zero (120 V to 0 V).

ses ma aEv i s<ee.tREMRENCO SO'D4X47151 E4CC9eWbod

l E&TS DEPARTMENT ICCN NOJ CALCULATION SHEET " "" - "-'S "^ " ' " " -

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 ""

calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet of

-AEV ORGINAToA DATE M OAIE REV ORGiNATOR OATH IRE. DATE g !

Joan Khn B. Lennartz h

3

• [9 2.2.2 Revise Test Procedures SO2(3)-11-il.R and S02(3)-11-11.1B to change acceptance criteria for as-found dropout and pickup voltages of 127D relays and as-left time delay value of 127F relays as showti telow:

Undervoltage Relav Time delay Dmtinut Pickup Relay Nommal Accepance Nommal Accepance Nomma! Acceptance sctung encena setune enscria sentme entena 127D.113 A4 AS-left 1.98 sec. to 2.o2 120.7 V to 121.30 V to (App 1mable TS 2 Sec. sec. 121.40 V 120 0 V 121.40 V 121.5 V SR 3.3.7J) 27N 1.83 see 10 2.17 It9J9 Y so 120,49 Y to As-Found sec. 121.70 V 122.31 V 127F-1.2.3.& 4 0.782 see to 103.95 V to N/A (Appleable TS As-ten s 1.0 sec. 0.965 suc. 105 V 106.05 V N/A SR 3.3.7J) INow)

CV.2 0.75 see to 101.54 Y to N/A AS.Nomi 1.0 sec. (Note) 10A 47 V Note: Time dial of CV-2 relay should be adjusted such that the time delay of the entire LOVS channel up to and including 127F-1X3 and 127F-IXI/127F-1X2 is within this time range. A LOVS channel consists of relay 127F 1 and auxiliary relays 127F-1X3 and 127F-1X1/127F-1X2 in series. This timing requirement also applies to the LOVS channels associated with relays 127F-2,127F-3, and 127F-4. This is the time to go from norninal voltage to zero (120 V to 0 V) 2.2.3 Instrument calibration As recommended in CCN 20 to calculation E4C-09, the following equipment (equivalent or better accuracy) are required for instrument calibration:

Instrument Instrument ID Calibration equipment Undervoltage relays 127D-1,2,3, & 4 Fluke 45 Multimeter with a user selected 127F 1,2,3, & 4 reading rate of medium and voltage range of 300 V or caual.

162D-1,2,3, & 4 Wilmar SC-101 with a user selected range of Time delay relays second or equal 162S-1,2,3, & 4 Wilmar SC-101 with a user selected range of 3 162T 1,2.3, & 4 millisecond or equal I l

SCE 26426 RFV.1899 l REFERENCE. SO12SXXV 7.16] E4C0ll# M10#F8

E&TS DEPARTMENT KCN NO/

CALCULATION SHEET m M N . N-15 m 8 0F_@_

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 CCN NO. CCN -

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of l Hiv OH61NAICH CAIL IHL DAlh RtV l OH6ihATO4 OAIE ikt DAIL g Joort Kim B. Lermartz 1-INTENTIONALLY LEFT BLANK 1

I SCE P642fl REV.1690 [ REFERENCE Sot 2MXIV F.161 E4C0061ni$.mpo

c E&TS DEPARTMENT CCNNOJ CALCULATION SHEET min CN N N-15 CON CONVERSION:

PAGE 9 OFE_

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN No. CCN- hh Subject 4 KV SWITCHGEAR PROTECTIVE RET AY SETTING CALCULATION Sheet of sev osc,m roa orre me care sev , osomros 04re me 04u g

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D9 l "1-1 ASSUMPTIONS 3.1 The reset time of 5 cycles for Westinghouse type CV-2 relay was assumed based on the similar electro-rnecharucal G.E type IAV54E relay.

3.2 The following instruments are assumed to be used for calitration of undervoltage relays and time delay relays (see recommendation 2.2.3).

Undervaltage relays: Fluke 45 Multimeter with a user selected reading rate of medium and voltage range of 300 V.

Time delay relays: Wilmar SC-101 with a user selected range of second and millisecond 3.3 The following relay voltage setting tolerances were assumed:

Setting l Relay tolerance Reference

]

127D-1.2.3,&4 (27N) 10.1 V Surveillance test data (refer to para. 4.4) 127F.I,2.3,& 4 (CV-2) 11 % Surveillance test data (refer to para. 4.3) and Attachment 9.10 of CCN 20 to E4C-098 3.4 Since drift tolerances of some relays are not available, the following miscellaneous tolerances which include driA tolerance for voltage tap were assumed; 127D-1,2,3,&4 (27N) 10.36 % l 127F-1,2,3,&4 (CV-2) 11.29 % l As shown in paragraphs 4.3 & 4.4, measured drifts of the relays a e less than these assumed tolerances.

3.5 Time setting tolerances of the following relays were assumed.

Setting Re18Y tolerance Reference 162D 1.2.3,& 4 12 seconds Refer to para. 4.5 162S-1,2,3,& 4 10.05 second Refer to para. 4.6 162T-l.2.3.& 4 20.05 second Refer to para. 4.7 127D-1.2.3,& 4 0.02 second Refer to para. 4.4 127F-1,2,3,& 4 11% Attachment 9.10 of CCN 20 to E40-098 As shown in paragraphs 4.3, 4.4,4.5,4.6, & 4.7, measured drifts of the relays are less than these assumed tolerances.

3.6 ABB catalog for 27N relay specifics an accuracy of110% for time delay. However. ABB (Mr.

Chff Downs) states that the accuracy of110% is very conservative value that includes temperature effect, power supply effect, and miscellaneous tolerance.

SOC 21429 REV.14116 PEFEMENCE. sot 23-Olv.7 t51 EaC0emin15 wsnt

1 E&TS DEPARTMENT ICCN MO/

CALCULATION SHEET ' ' " " ' " " " " ""5 "^" ' '#-

CCN CONVERSION:

l Project or DCP/FCN UNITS 2 & 3 Calc No. _E4C-098 CCNno.ccN- &$

Subject 4 KV SWITCHGEAR PROTECTIVE RFLAY SEITING CALCULATION Sheet of REv oRGhATOR DATE AE oAIE ftE W ORIGhAI OH oATE GE oAIE g Jousi igm B. Lennestr 92

.L Type test results for 27N relay (Attachment 9.11 of CCN 20 to E4C-098) shows the following accuracies:

Accuracy- Max.15% (time tap setting at 1)

Temperriure effect: 10.1 % in a range of 0"C to 40*C Power supply effect: Not available Based on the above data, the following random tolerances for 27N relay time delay were assumed.

Reference tolerance: 15 %

Temperature effect: 10.1%

Power supply variation: 10.1%

Miscellaneous tolerance: 18.66 %

3.7 ABB clarifies that temperature and control power effects on the accuracy are non-random (refer to Attachment 9.16 of the base calculation E4C-098, rev.1). However, it was assumed that the worst case effects (10.1% for control power effect and 10.4% for temperature effect) are random.

3.8 Operating time tolerance of15% for CV-2 relay is based on the calibration tolerance of 1% as stated in Attachment 9.10 of CCN 20 to E4C-098. The operating tolerance of 5% is considered to include temperature effect, drift allowance, and miscellaneous allowance.

Voltage tap tolerance of13% for CV-2 relay is based on the calibration tolerance of 1% as stated in Attachment 9.10 of CCN 20 to E4C-098. The voltage tap tolerance of13% is considered to include temperature effect, drift allowance, and miscellaneous allowance.

3.9 Temperature effect on accuracy for Agastat series E7000 Class IE relay is not available.

However, the specification (Attachment 9.12 of CCN 20 to E4C-098) for series 7000 non-1E relay states "The maximum shift in the average of three consecutive time delays from 77'F is

-20% at -20'F, +20% at 165P." This temperature variation will be used for series E7000 Class IE relay.

Voltage effect on accuracy is not availaNe. Therefore,it was assumed that vol. age effect on accuracyis included in the relay accuracy of 210%.

3.13 Sina drift tolerances of some relays are not available, the following miscellaneous tolerances (which include drift tole ance) for time delay were assumed based on the existing tolerances of the time delay relays in Tech. Spec. SR 3.3.7.3.a:

162D-1,2,3,& 4 116.3 %

162S-),2,3,& 4 13.13 %

167T-1,2,3,& 4 29.3 %

As shown in paragraphs 4.5,4.6, & 4.7, measured drifa of the relays are less ihan these assumed tolerances.

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i CALCNLNflON SHEET "aY"" "" "' 5 "^ ' " or so CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN No. CCN -

h Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet - of HLv OhKalMI OR oAlh RE CAIE l REV i ORGMIOR 4 DATE HE c Dart Joan Kirn B. Lennetz h

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4,, DESIGN INPUT 4.1 Undervoltage relay 127D-1,2,3,4 settings (refer to the base calculation E4C-098)

Relay 4160 V bus voltage Settinc0A volts PJ Maximum reset 122.75 4296.25 1.033 Maximum dropout 122.14 4274.90 1.028 Nominal reset 121.40 4249.00 1.021 Nominal dropout 120.80 4228.00 I 1.016 Minimum reset 120.05 4201.75 1.010 Minimum dropout 119.45 4180.75 1.005 4.2 Technical Data for miscellaneous devices 4.2.1 West. CV-2 undervoltage relay (references 6.2 & 6.4 and Attach. 9.10 of CCN 20 to E4C-098))

Device No: 127F1,127F2,127F3. and 127F4 MFR: Westinghouse Style No: I875516 Tap Range: 55-140 V Temperature range: -2(PC to 55*C Burden: 2.4 VA w/ 0.29 power factor @105 V TAP 3.64 VA & 0.34 PF at 105 V tap (Existing) 4.66 VA & 0.35 PF at 93 V tap (Existing)

Inst boolc 1.L 4120lK Tap settmg 105 V Time dial: Adjust time delay of 127F1 relay such that the time delay of the entire LOVS channel up to and including 127FIX3 and 127FlX1/127FlX2 is 1.0010.05 seconds. A LOVS channel consists of relay 127F1 and auxiliary relays 127FIX3 and 127F1X1/127FIX2 in series. This timing requirement also applies to the LOVS channels associated with relays 127F2,127F3, and 127F4.

Accuracy- Voltage tap - 13%

Voltage tap calibration - 11%

Time curve - 15%

Time dial calibration - 11%

Reset time (contact opening): 5 cycles (refer to paragraph 3.1) ace :S.se arv. i a$s tnerrarwce: sot ra. xxiv.r.is; e.anniv ais .r.

N E&TS DEPARTMENT icce No/

CALCULATION SHEET "a "* ""5 CCN CONVERSION:

'2

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN NO. CCN. hh Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of AEV OAbiNATOR DATE 1RE DATE Ht: v OftlGINATOR DATE IHL DATE g Joon Kim B. Lennetz E DY r

4.2.2 ABB undervoltage relay (references 6.3 & 6.4)

Device No- 127D-1, 2, 3, 4 Manufacturen ABB Type: 27N Catalog #- 41IT5375 Pickup range: 70-120 V Pickup setting: 121.4 V Dropout: 70-99% of pickup (Note 1)

Dropout delay- 2-20 seconds Delay setting: 2 seconds Reset time: 1. css than 2 cycles Control voltage: 100140 V DC Temperature range: -30 to +70' C Burden: 0.5 VA at 120 V Repeatability tolerance (Note 2):

With harmonie filter

a. @ constant temperature & control voltage - 10.1%

b. For allowable de control power range (100140 V) - 10.1%

c. Temp. range 0 to +55' C - 10.75%

+10 to +40' C - 10.4%

-20 to +70* C - 11.5%

d. Time delay - *10% or 120 milliseconds whichever is greater.

Notes:

1 Difference between pickup and dropout can be set as low as 0.5 %

2 The three repeatability tolerances are cumulative and are random tolerances (refer to para. 3.7).

4.2.3 GE potential transformer (refer to base calculation E4C-098)

Type: JVM-3 Ratio: 4200/120 V Accuracy: 0.3W, X, Y,1.2Z burden at 120 V 4.2.4 Environmental condition data (refemnce 6.8)

Min. temp. Max. temp.

Area Norma! normal / accident CB Area B5 50"F 95'F/95"F (ESF SWGR room) scE m2e Rev i ame PEFE RENCE: soir} Xxiv 1.15] ucoorn15 wpd

E&TS DEPARTMENT ICCN PCD/

CALCULATION SHEET "a " "" - ""5 "" " "m-CCN CONVERS:ON:

Project or DCP/FCN UNITS 2 & 3

"" ~

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of Rcv oRGNAIOH I UAlk 1RE JAIE REV 4 ONehAT OR DAlt DAiE

( W3E g Jocn K.in B. t.annartz h2

. .L 4.2.5 Fluke 45 multimeter (Attachment 9.8 of CCN 20 to tuse calc. E4C-098))

300 V rance Accuracy: 10.2% of readmg + 10 digits Full scale: 300 V AC Resolution: 0.01 V Note: Since the resolution at medium sampling rate (refer to para. 3.2) on 300 V range is 10 mV, the reference accuracy is 1(0.2% + 10x0.01V) - (0.2% + 0.1 V) 30 mA rance Accuracy: 0.05% + 3 Full scale: 30trA l Resolution: 1pA Note: Since the resolution at medium sampling rate (refer to para. 3.2) on 30 mA l range is 1 pA the reference accuracy is 1(0.05% + 3 x 0.000001 A) = 1(0.05%

+ 0.000003 A) 4.2.6 Timer (Attachment 9.9 of CCN 20 to base cale. E4C@8)

Manufacturer: Wilmar Type: SC-101 Operation Modes: Dry contact, NO or NC DC potential. OFF or ON AC potential, OFF ON Temperature range: 0*C to 50'C ,

1 Range: Cydes 99999  !

Milliseconds - 0 99999 Seconds 999.99 Accuracy *: Dry contact . ::1 millisecond DC vol:2ge - il millisecond i AC voltage - 11/4 cyde  !

• Notes (1) The " clock" and " read-out" tolerance listed below must be added in computing the overall accuracy:

a. The internal clock tolerance - 10.06%

b. Above accuracies are il less significant digit.

(2) The AC voltage accuracy given is the worst case at low voltages and improves 6CE 26420 REV. I 696 tRE8ERENCE. SO12FX.Xrv-7.56: E4C~%)n16.wpd

E&TS DEPARTMENT iCCN Ro/

CALCULATION SHEET "a " c "" "45 '* - " '*-

CCN CONVER$f0N:

Project or DCP/FCN UNITS 2 & 3 _ Calc No. E4C-098 CCN NO. CCN -

h Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of RLv OH6,reA I OR Dalk IHL DATE hhv urn hATOR DATE AE DAIL g Joan igm B. Lennstz h

h!I with high voltage.

4.2.7 Time delay relay (Attachment 9.18 of tuse calc. E4C-098, rev.1)

Device No.: 162S-1,2,3, & 4 Manufacturer: ABB Catalog No.: 417T2170 Time delay range: 0.01 - 9.99 seconds Accuracy: Repeatability 0.5% or 115ms whichever is greater.

Vanation of timing with change in ambient temp. - 12% or 120ms whichever is greater for -20'C to +70'C Variation of timing with change in control voltage - 12% or 220ms whichever is greater for -20% to +10% voltage variation.

4.2.8 Time delay relay (Attachment 9.18 of base calc. E4C-098, rev.1)

Device No.: 162T-1,2. 3, & 4 Manufacturer: Amerace Corp.

Catalog No.: Agastat E7012PB Time delay range: 0.5 - 5 seconds Accuracy: 210%

4.2.9 Time delay relay (Attachment 9.18 of base calc. E4C-098, rev.1)

Device No.: 162D-1,2,3, & 4 Manufacturer: Amerace Corp.

Catalog No.: Agastat E7012PKL Time delay range: 1300 seconds Accuracy: :10%

t I

SCE 2M6 REV t MS [mEFERENCE: 50taxKVJ.tS) f 4C%da ta15.wsid

j E&TS DEPARTMENT ICCN 1001 l

! CALCULATION SHEET * * '"- "* " ' ' ' " ^ " "'

CCN CONVERSION: "

Project or DCP/FCN UhTFS 2 & 3 CCN NO. CCN -

Calc No. E4C-008 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of Atv { OAKa:NATOH oAIL 6Hk OATL ll f*tv } OR6NA TOR oAIk du DAIe g Joon Kirn D.Lenn&12 I

y 4.3 CV-2 Loss of Voltage relay test data 1.o% of voltare relay CV 2 (rercrence 6.12)

Channel Operating Min. Trip Vdtage (V) Time (sec.)

Bus / Relay (120 V to o V) test date Norninal As-left As-found Narninal setting setting As-ieft 127F-1 103.1 0.974 127F-2 Nde2 103.9 0.965 2A04/

2/15/97 127F-3 134 6 0.M7 127F-4 1042 0M 105 1.0 127F-1 106.0 C.965 (NoteI) 127F Note 2 106.5 0.964 2A06/

gjt g 7 127F-3 103.5 0.964 127F-4 104.1 C.967 127F-1 104.5 0.964 3A04/ 127F-2 102.9 C.986 2/15/97 Note 2 127F-3 '04.5 0.976 127F-4 1 04.5 C.988 127F5 103.5 0.962 3A06/ 127F-2 103.4 C.965 12 rF-3 1030 C.964 127F-4 102.7 C962 Notes: 1. Time dial of CV-2 relay should be adjusted such that the time delay of the entire LOVS channel up to and including 127F-lX3 and 127F 1X1/127F-1X2 is within this time range. A LOVS channel consists of relay 127F-1 and auxiliary relays 127F-lX3 and 127F-IX1/127F-1X2 in senes. This timing requirement also applies to the LOVS channels associated with relays 127F-2,127F-3, and 127F-4

2. As-left min. trip voltages for 4.16 KV buses are not available. Since the func' ion of the CV 2 is to generate LOVS on loss of voltage condition within a specific time, CV-2 relay with a fixed time dial will dropout at the same time on a loss of power condition regard'ess of voltage tap settings (existing voltage tap of 105 V is arbitrary). Therefore,

, As-1.cft min. trip voltage of CV-2 relay is not critical for this analysis.

1 sesswearv iessinutans somxrer.isi s4cocarina w

CALC L 10 SHEET I"" " " " "~ " * " a " *'

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Cale No. E4C-098 CCN NO. CCN =

95 --

Subject 4_KY SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet . of REV ORIG 1NAT OR DATE IRE DAIE 84 EV GRIGINA T OH DATE i4E DATE g Joon Kim B.Lennartz 3o a: E 1

I.oss of voltage relay CV-2 (reference 6.14)

Bus / As-40urid As-left test dale Relay Trip Vda9e Chantini operating Trp Voltage Channel opswating (VO Trne (sec) (VO Time (sec)

(120V - 0 V) (120V - 0 V) 127F-1 102.75 1.01 105.1 0.952 2AC4/ 127F-2 103.84 0 9485 105.0 0.958 2/2199 127F-3 104.25 0.9744 105.0 0.957 127F-4 102.54 0.9138 105.1 0.953 127F-1 105.1 0.97 105.4 0.96 2A06/ 127F-2 106.1 0.05 105.1 0.96 2/0/99 127F-3 104.4 0.96 104.8 0.96 127F-4 104.1 0.95 104.3 0.96 Notc; Data for buses 3A04 & 3A06 Are not availaNe.

l i

SCE 264M REV 18981RErERENCE. 5012>xX>VJ.tg] E4C09erintS wrxf I

\

E&TS DEPARTMENT cCNeo/

CALCULATION SHEET """'" " "'5 " "'  !

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E0098 CCN NO. CCN -

9'5 Subject 4 KV SWITCHGEAR PROTECTIVE REI AY SETTING CALCULAYION Sheet of M6v OsaGAAIGA I DATE IRE DAlb HtV ORKa#4A T OH DATE INE DAIE g Joan igm 8. Lennertz B

e 1

4.4 27N Degraded Bus Voltage relay test data DGVSS relays 27N (reference 6.13) a Bus B elay As-Founct As-Left Drwout Time (see) Pick @ Drmout Time (sec) voltage M (120y.oy) voitage (V) voltage (V) (120 V - 0 V) 127D-1 120.7 2.02 121.3 120.7 2.01 127D-2 120.6 2.01 121.3 120.8 2.02 W1NS 1270-3 120.7 2.00 121.4 120.7 2.00 127D4 120.8 2.00 121.5 120.8 1.99 127D-1 120.8 2.01 121.5 120.9 2.01

_ _127D-2 120.9 2.00 121.3 120.8 2.00 3/.C6/

8/4/05 127D 3 120.8 2.C3 121 5 120.9 2.01 127 N 120.8 1.99 121.5 120.8 g .99 Note; Data for tuses 2A04 & 2A06 are not availabic.

SCF 2tM26 PEV.1498 (REFERENCE SO123-XXIV-T.*Sl EdCC9eints wpd l

E&TS DEPARTMENT iCca5 No/

CALCULATION SHEET " " " " ' """ " '^" '" '5 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. _ E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORIGledA T OH DATE 6E DAIE l Mt;V OHKaNAIOR DATE 664E CAIE g Joan Kim 0 Lennetz l 3 I hh

.L DGVSS relan 27N (reference 6.10) ges Relay As-Found As-Left Drqxx;t Time (sec) Pickup Drcpout Time (sec) wAa.2e (V) (120V - 0 V) voitage (V) voitage (V) (120V - 0 V) 1270-1 120.37 2.0059 121.35 120.75 1.9971 1270-2 120.35 2.0045 121.40 120 8 2.006 2A04/

12/28/96 127D-3 120.44 1.9933 121.41 120.8 1.987 1270-4 120.45 1.9952 121.38 120.7 1.995 J2701 120.63 1.99 121.37 120.78 1.99 2A08/ 127D-2 120.59 1.99 121.31 120.71 1 99 12/3/96 127D-3 120 60 1.99 121.31 120.73 2.00

{

127D-4 120.59 1.99 121.30 $ 20.70 1.98 127D-1 120.3 1.99 121.3 120.9 2.00 1270-2 120.4 2.01 121.3 120.9 2.C1 3A04/

4/14/97 12743 120.4 1.99 121.4 120.8 2.00 127D-4 120.4 2.00 121.4 120.7 2.00 1270-1 120.54 2.02 121.39 120.80 2.02 127D.2 120 50 2.01 121.40 120 80 2.C1 3A06/

$/7jg7 1270-3 120.62 2.03 121.40 120.80 2.03 127D-4 121 14 2.0 121.4 120 8 2.04 SCE PH29 REV.141h {AEFERChCE Sot 23-xxiv 1.1S] E4C0061ai$. woo

E&TS DEPARTMENT ICCN NO./

CALCULATION SHEET PRELIM. CCN NO. N 15 PAGE . 19 OF 50 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORIGr4AT OH DAlk IHe DATE REV ORGINATOR CATE mE DAlk g Joon Kim B Lennartz 52 1

L3.,

DGVSS relays 27N (reference 6.H)

Bus Relay As-Found As-Left Pickip Drwout Tirne(sec) Pickup Dropout Time (sec) waage votege (120V 0 Vs voltage voltage (120V 0 V) m M M M 1270-1 12120 120.71 2 01 121.36 120.83 2,01 127D 2 121.32 120.70 2.01 121.3? 120.70 2.01 2A04/

mg 1270-3 121.38 120.84 2.01 121.38 120.84 2.01 1270-4 121.24 120.66 2.0 121.40 120.85 2.00 1270 1 121.4 120.8 2.0 121.4 120.8 2.0 2A06/ 1270-2 121.3 120.7 20 121.3 120.7 2.0 2/6/99 127D 3 120.95 120.8 2.0 121.4 120.8 2.0 127D 4 121.3 120.7 1.99 121.3 120.7 1.99 Note; Da'a for buses 3 A04 & 3 A06 are not available.

SCE 26426 REY.1896 [ REFERENCE. 50921.KXNJ.16] E4C09kint5 mpo J

r E&TS DEPARTMENT tcCN NO1 CALCULATION SHEET PRaiu. ccN Na N 15 PAGE _22_ OFE_

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 ccN No. CCN.

hh Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet of g oncinaron omit ine o4re g HtV 04u.alNA T OH DATE iAE DATL Joan Kim a L.nnartz l g 5g i i-4.5 162D Time Delay relay test data Time delav relays 162D freference 6.10)

Operating tirne (sec)

Dus Relay Nomanal Aa-found As-lef t (1) As-left (2) As-lef t (3) 1620 1 100.6 116.4 116.3 118.6 2A04/ 1620-2 110.2 110.2 112.4 112.7 i2/26/96 1620-3 115.4 115.4 112.7 120.4 182D-4 116.6 116.6 111.2 112.6 1620-1 2A06/ 1620-2 Nct avaliable Not svailable Nat available Nd avalfable 12/:W96 110 1620-3 162D-4 162DL1 til 111 111 112 3A04/ 1620 2 ill 111 114 114 4/14/97 182Dw3 111 111 111 114 1820 4 113 113 115 111 162D-1 109.4 109.4 108.5 107.6 3A06/ 162D-2 110.8 106.1 105.9 109.8 5,7/97 162D-3 112.8 110.5 110.6 110.2 162(>.4 112.7 104.4 108.6 109.0 Note: Time setting tolerance of 2 seconds for as-left time delay test is not applicable to these tests because the tes:s were performed before the 2 seconds tolerance was specified in CCN 20 to calculation E4C-098.

ECE 26429 REV.1 SM IRUERENCE; SO12FXXIV-7.15) IdC09Mt5 erW i

)

E&TS DEPARTMENT iccreteos CALCULATION SHEET PRau ccm NM PAGE 21 &E_

CCN CONVERSION: -

Project or DCP/FCN UNITS 2 & 3 * " " ' * - '

Calc No. _E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet _ of HEV ORKiAATOR CATE RE Dark He.v OHKahA TOR DATE RE OArc I

g Joon Kim 8. Lennartz b!

1 Time delav relays 162D (reference 6,14)

Operating time (sec)

Bus Aelay Ncmnal As4ound As-left (1) As-left (2) As.lett (3) 162D-1 113.32 110.8 111.93 111.92 2A04/ 162D-2 110.43 109.0 108.0 1C&37 2/229 182D-3 115.63 108.65 110.48 109.26 162D4 112.05 109.41 108.57 10& 72 162D-1 112.89 109.74 110.98 110.39 2A06/ 162D-2 108.50 139.45 109.54 109.45 2/6/99 110 162D 3 113.43 108.79 109.4 110.81 162D-4 110.48 109.51 110.27 110.C5 162D-1 3A04/ 162D-2 NW available Not available Not available Not available 162D-3 162D-4 1620-1 3A06/ 1620-2 162D-3 162D-4 l

l SCE 26 426 PEV. I 8/98 [ REFERENCE. 3CIDXX v 7.151 E4CC961MS wpd

E&TS DEPARTMENT CCN NOJ CALCULATION SHEET PRm CCN NO. S 5 PAGE _ n_ w %

CCN CONVERSlON:

Project or DCP/FCN UNITS 2 & 3 ""'

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV OA6teTOA DAIE IRL DATE REv OHGNAIOR DAIE IRE i DAIE g Joon Kim B Lennartz d

c-9 l i  !

4.6 162S Time Delay relay test dat3 Time delav re.lavs 162S freference 6.10)

Operating tane(sec)

Da Relay Norninal As-found As-left (1) As-lef t (2) As-left (3) 162S-1 4.29 429 4.30 429 2A04/ 182S-2 4.29 4.29 4.29 429 12/26/96 162S-3 4.30 4.34 429 4.30 162 S4 4.30 4.29 4.29 429 162S-1 4.30 4.30 4.30 429 2A06/ 162S-2 4.32 4.31 4.31 4.31 12/3/96 4.30 162S-3 4.30 4.30 4.30 4.31 162S4 4.30 4.30 4.30 4.30 162S 1 4.3 4.3 4.3 4.3 3A04/ 162S-2 4.3 4.3 4.3 4.3 4/14/97 162S-3 4.3 4.3 4.3 4.3 1625-4 4.3 4.3 4.3 4.3 162S 1 4.3 4.30 4.30 4.30 3A06/ 162S-2 4.31 4.31 4.31 4.31 5f7/97 l 162 S-3 4.31 4.31 4.31 4.31

{

162S 4 4.31 4.31 4.31 4.31 sOE 25426 MV.1 k96 PEFERENCE SO123-XXIV 7.16) E4CCGetIn'5 epo

E&TS DEPARTMENT ICCN NOJ CALCULATION SHEET "a'"d cc" S'S "^o" 22 orm CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORGWATOR OATE At DAih Hty OR00sATOR DATE IRE DATE Joan Kim B. Larmatz C

a Time delav relavs 162S (reference 6.14)  !

Operath tme (nee)

Nominal As-found As-lef t (1) As-lef t (2) As-lef t (3) 162S-1 429 4.29 4.29 4.29 2A04/ 162S-2 4.29 429 4.29 429 27399 162S-3 4.29 429 4.29 429 162 S 4 4.30 429 4.29 429 162S-1 4.3 4.3 4.3 4.3 2A06/ 1625-2 4.3 4.3 4.3 4.3 2M/99 162S 4 4.3 4.3 4.3 4.3 162S 4 4.3 4.3 4.3 4.3 Note: Data for tuws 3 A04 & 3A06 are not availabic, i

)

l i

SCG 2&d26 REV. t 698 (REFE AENCE: SO'23-0 v.7.1SI E4Coe8rin15.w;xs

E&TS DEPARTMENT ICCN NOJ CALCULATION SHEET """""- "* "~ 5 "^ " a'*

CCN CONVERSICN:

Project or DCP/FCN UNITS 2 & 3 Cole No. E4C-098 /

Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of HLV UHKah 4AIOR DATE ARE DA TE REV CRGNATOR i OATE #4h cATE g Joon Ke B. Lanentz h

d9 Y

4.7 167T Time Delay relay test data Time delev relays 162T (reference 6.10)

Operabng time (sec)

Bus Relay Nominal As-Icund As-left (1) As4ef t (2) As-lef t (3) 162T 1 1.35 1.32 1.33 1.32 2A04/ 162T-2 1.31 1.32 1.32 1.33 12/23/90 162T-3 1.29 1.30 1.30 1.30 162T-4 1.32 1.32 1.32 1.33 162T-1 1.28 1.26 126 1.27 2A06/ 162T-2 129 1.26 124 1.24 162T-3 1.33 1.45 1.38 1.36 162T-4 129 1.30 127 1.27 162T 1 127 127 127 129 3A04/ 162T-2 1.28 1.28 1.28 128 4/14/97 162T-3 1.29 1.29 1.29 1.29 162T-4 128 128 1.28 127 162T-1 1.31 129 1.29 1.30 SA06/ 162T-2 129 1.28 129 1.30 srit97 162T 3 1.27 1.28 1.29 128 162T-4 1.27 1,27 1.28 1.30 l

Note: Time setting tolerance of 0.05 seconds for as-left time delay test is not applicable to these tests because the l

tes s were performed before the 0.05 seconds tolerance was specL' led in CCN 20 to calculation E4C-098. l SCE 26429 REV 1898 [

REFERENCE:

SO121XX:V 1.15} E4C008ria15 was

1 E&TS DEPARTMENT iCCN nO; CALCULATION SHEET PREUM. CCN NO. N-15 PAGE 25 OF $0 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN NO. CCN -

95 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SE'ITING CALCULATION Sheet of HLv UH64p.A i O.4 UAIE lhe l DATE REV ORGIMTO4 DALE 1RL DATE. g i

4 Joan Kim EL Lennartz h

1.

Time delay relavs 162T (reference 6.14)

Operating time (sec)

Bus Relay Nominal As-found As-left (1) As-let1 (2) A>left (3) 162T 1 1.38 125 126 125 2A04/ 162T-2 1.33 1.25 125 126 2/26/99 162T-3 1.31 124 125 125 162T-4 1.35 126 126 126 182T-1 128 1.28 1.28 128 2A06/ 162T-2 123 1.21 122 122 162T-3 1.37 122 124 124 162T 4 1.33 124 123 125 Note; Data for buses 3A04 & 3A06 are not available..

SCE 2S42s Rty.1 Mia PEFERD*CE Sci 2S xxlv f.15]

E4Cocaric t$ ope

E&TS DEPARTMENT icca No.t CALCULATION SHEET "" """*5 "^ " a- "#

CCN CONVERSICN:

Project or DCP/FCN UNITS 2 & 3 """~

Cate No. E4C-09S Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of HEV OH61%AT OH DAih tHE DAlt Rtv OH61tvA l oH l OATE tRE DAts g Joon Kim D Lennstz h

1 f

4 i

INTENTIONALLY LEFT BLANK SCE 26426 MEV 1 E98 (REFERENCE SCthXXV1.15) E4CC98rint s .pd

ProjectCr DCP/FCN UNITS 2 & 3 Cale No. E4C-098 I" " " ~ NJ l EETS DEPARTMENT ICCN NOJ CALCULATION SHEET PRm CCN No. N 15 PAGE 27 OF So CCN CONVERSION:

• Project or DCP/FCN UNITS 2 & 3 Cale No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of mv vace.Aios oML RE DATE HEV OR6 MIOR 4 DATE #4E OML g Joon Kun B Lennstr Y Bd

.i

{ METIIOD(ROGY 5.1 Dermition 5.1.1 Allowable values (reference 6.6)

Allowable values of a setpoint are the design limit adjusted by the sum of the absolute value of the applicable tolerance plus the engineering margin.

Allowable value (min.) - Design limit + IPcm. tolerancel + Engineering margin Allowable value (max.) = Design limit - INeg. tolerancel - Engineering margin Any operating procedures containing procedural steps having values, includmg surveillance acceptance values, must be more conservative than or equal to the allowable values.

5.1.2 Acceptable As-Left values Setpoint i Setting tolerance 5.1.3 Acceptable As-Foundvalues The same value as the allowable value 5.2 Setpoints of the Undervoltage Relay 5.2.1 Degraded Undervoltage Relay (27N)

Per sections 5.8 of base calculation E4C-098, revision 1, the maximum reset (pickup) voltage of the relay should be equivalent to the highest 4.16 KV ESF bus voltage determined by calculation E4C-082 (System Dynamic Voltages During Design Basis Accident) during the automatic sequencing of ESF loads immediately following a design basis accident. The minimum dropout voltage of the relay should be equal to or greater than the post accident steady state voltage of 4.16 KV ESF bus voltage deterrruned by calculation E4C-090 (Auxiliary Sptem Voltage Regulation).

Calculate analytical limits and allowable values for the maximum reset voltage and time delay, considering TLU of the relay circuit.

5.2.2 1.nss of Voltage Relay (CV-2)

Voltare tan Since the function of the CV-2 is to generate LOVS on loss of voltage condition within a specified time, CV 2 relay with a fixed time dial will dropout at the same time on a loss of power condition regardless of voltage tap settings (voltage tap of 105 V is arbitrary).

sca run arv. i sn inersairnes s:s:s xxu.r.isi escoo+iais .oo l

l l

i

E&TS DEPARTMENT icca No; CALCULATION SHEET "" 5"" o " " "" 5 "^ " "*

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No, E4C-098 " " '

Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheel of REV URGNATOH DAlh 1RE oATE REV CRGNATOR DATE IHL DAIL i

g JoortKim B. Lennartz $

it E a: a

.L Therefore. TLU of the CV-2 relay voltage tap is not critical factor. However, the following should be noted-1.

As shown in section 5.8 of tuse calculation E4C-098, revision 1, the relay should operate at 75% of 4.16 kV bus voltage within 15 seconds to protect motors from short time voltage dips.

2. During surveillance test, the following item should be verified as specified by the relay manufacturer:

a 1% calibration a

Repeatability of the relay, considering tolerances of the relay &

M&TE.

Time delay Time dial of CV-2 relay was adjusted such that the time delay of the entire LOVS channel up to and including 127F-1X3 and 127F-IX1/127F-1X2 is 1.0010.05 seconds.

A LOVS channel consists of relay 127F-1 and auxiliary relays 127F-lX3 and 127F-IX1/127F.1X2 in series. This timing requirement also applies to the LOVS channels associated with relays 127F-2,127F-3, and 127F-4.

I Since the upper limit of the time delayis the limiting condition, adjust CV-2 relay time dial to limit the maximum time delay if the entire LOVS channel to 1.00 second,  ;

considering TLU of the relay circuit and pickup time of the auxiliary relays 127F-1XI l and 127F IX2 (X3). '

5.3 Setpoints of time delay relap 162D-1,2,3, & 4,162S-1,2,3, & 4, and 162T-1,2,3, & 4 Calet; late the design limits and allowable values of the time delay, considering TLU of the relay circuit.

l 5.4 Total Loop Uncertainty (TLU) of metering devices 5.4.1 Tne following uncenainties are considered per Standard JS-123-103C (reference 6.6):

a. Device tolerance a Reference accuracy e Drift allowance a Power supply allowance a Temperature allowance (normal & accident) ses sure av. i a,e tarsmuc6: som-xxv t.isi E4 coo

• w 5*

CALCUL TIObHEET IR$i M N . N-15 NE _22_ OF So CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN NO. CCN-h Subject 4 KV SWITCHGEAR PR(7FECTIVE RFI AY SETTING CALCULATION Sheet of AEV ORIGINA I QH DA!k IRE DAih REV ORKihA T OH DATE SE oATE g Joan Kun B. Lennartz h

k "1

b. M&TE tolerancg I

e M&TE accuracy requirement a

Readability requirement (One half of one minor division for analog M&TE and the value of the least significant digit for digital M&TE) a M&TE temperature requirement a M&TE reference standards requirement (25% of M&TE accuracy) '

c. Setting tolerance allowance,if applicable

d. Readability allowance for meters

e. Miscellaneous allowance 5.4.2 The following tolerances are considered for allowable values:

a. Drift allowance

b. Setting tolerance

c. Miscellaneous allowance 5.5 Relay Circuit Tolerance A combination of the Straight Sum and Square Root Sum of the Squares (RSS) methodologies will be utilized per SCE Standard JS-123103C (reference 6.6). The random elements of uncenainty are comNned under the RSS methodology, and any non-random uncertainties are 3

added algebraically (straight-sum) to the RSS result as shown below: 1

a. Random, independent elements are combined by RSS methodology U = i(W2 + X8 + Y2 + Z2)"

Where: W, X, Y, & 2 are random, independent elements of uncertainty and U is the total uncertainty,

b. Random, dependent elements are first combined algetraically according to their dependency to form new independent eternents. Then, as independent elemems, they are combined with other independent elemunts by RSS methodology as follows:

2 U - t [W2 + X + (Y + Z)']"8 Where: Y & Z are random, dependent elements of uncertainty, W, X, and (Y + Z) are random, independent elements of uncertainty, and U is the total uncertainty.

c. Non-raadom element should be combined algebraically (straight sum) with the results of scE 26429 8tEV 169a [MEFf mENeE 801?>XXtV115) E4C0Hrtnie woo

I l l

\

E&TS DEPARTMENT iccaNo; CALCULATION SHEET -

PRaiu. ccN N . H-15 F> AGE 30 OF M l

CCN CONVERSION:

• l Project or DCPlFCN UNITS 2 & 3 Calc No E4C-098 l

Subject 4 KVS_WITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of l REV 6 Of$KiiNA T OR DAlb INE DAIE REW ORnalNATOR i DAlt i 4HE DAls I

Joan Kim D. Lennetz

$k i

the RSS computation for random, independent elenents.

2

! U - 1 (W + X + Y')" + 2 -

Where: W, X, & Y are random, independent elements of uncertainty, Z is non random element of uncertainty, and U is the total uncertainty, i

l l

l l

l I

l l

SCE 26426 REIV,1690 [ REFERENCE 30123-XXIV-7.151 Escouessis.wed

~

E&TS DEPARTMENT sccN NO1 CALCULATION SHEET Pnau emNo. N-15 PAGE _2L w3_

CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-008 Subject 4 KV SWITCIIGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet of nev oscearoa ora M DA TE REV ORIGtMTOR OATL i M Om g Jc,ori Kirri B Lennastr 1

INTENTIONALLY LEFT BLANK l

1 SCE 1Sd29 REV l 696 [ REFERENCE; SotDEXFV T.i5)

Eac09eriniS wed

E&TS DEPARTMENT tecN NO /

CALCULATION SHEET PsELiu. ccN NO. N-15 PAGE __32 0F So CCN CONVERStON:

Project or DCP/FCN UNITS 2 & 3 "'

Calc No. E4C-098 >

Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Sheet of $

RFv ORGNATOR t DATE IRE CATE REW OfuGifwA TOR 6 OATE #4 OAIE Joan Kirn B Lennartz

\

hk

.L.

6 REFERENCES 6i G d. Protection and Control Products Catalog GEZ-7723 1

6.2 Instructions Westinghouse 1.L.41 201.4C - Type CV Voltage Relays for Class 1E Application j 6.3 Asea Brown Boveri information Bulletin, IB 7.4.1.7-7 Issue D 6.4 Drawings 30220-2 30299 30300 6.5 V/P SO23-302 2-84 & 85 - B/M tus A04 & A06 6.6 SCE Standard JS 123-103C, Instrument Setpoints' Loop Accuracy Calculation Methodology.

6.7 Surveillance Operating Instruction SO23-3-3.23.1 Diesel Generator Refueling Interval Tests 6.8 DBD-SO23-TR-EQ - Environmental Qualification Topical Report I 6.9 90042 - Nuclear Consolidated Data Base 6.10 Main:enance Orders (History)

Bus M.O. I.UL5hJ 2A04 96030942 12/26/96 2A06 96031127 12/3/96 3A04 96050677 4/14'97 3A06 96050678 5/7/97 6.11 Test Procedures for less of Voltage (LOVS), Degraded Voltage (SDVS, DGVSS) and Sequencing Relays and Circuit Test S02-11-11.1 A - S.R. Unit 2 ESF Train A SO2-U-l1.1B - S.R. Unit 2 ESF Train B S03-11-11.l A - S.R. Unit 3 ESF Train A S03-11-11.1B - S.R. Unit 3 ESF Train B 8CE 26 426 REv. t 848 l REFERENCE. SCl2SXXW 7.t$) E4C096r1919 wpd

f E&TS DEPARTMENT ICCN NO/

CALCULATION SHEET PRm N N . N4 5 PAGE _22_ OF So l

l Project or DCP/FCN UNITS 2 & 3 CCN CONVERSION:

CCN NO. CCN -

(

,)

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV OHGahATOR CA TE 4RE DATE l REV OtE NATOR DAIE GRE DAlb g Joan Kim B LannstJ l It t,

! ".L 6.12 CV-2 relay test data l Bus M.O. Test datL 2A04 97021004 2/15'97 2A06 97021013 2/15/97 3A04 97020999 2/15/97 1

3A06 97021000 2/15/97 6.13 Maintenance Orders (History)

j. Bps M.O Test date 3A04 94071244 8/15/95 l 3A06 94071245 8/4/95 L j 6.14 Maintenance Orders (History)

Bus . M.O Irgslag

[ 2A04 98060307 2/23/99 2A06 98060308 2/6/99 1 l

l l

i l

l l set 21H26 REV 1 &96 t

REFERENCE:

SO12} XXIV-F.15) EaC09&1n85 epo r

7:

Pr; ject er DCP/FCN UNITS 2 & 3 I""*'""* }

Calc No. . E4C-098 CV J l 1 E&TS DEPARTMENT

• ICCN NOJ CALCULATION SHEET PRELIM. CCN NO. N-15 PAGE 34 OF,h L CCN CONVERS4ON:

Project or DCP/FCN UNITS 2 & 3 %NN .CCN-l Calc No. E4C-098 Subject 4 KV SWITCHQEAR PROTECTIVE RELAY SE'ITING CALCULATIOE sheet or HEV OH6tidiOR DATE lar. oATE AEV CRGMTOR DATE p f4E i DATE g Joo. som a tennun 3

.L l 2 NOMENCLATURES AR Action Request CCN Calculation Change Notice EDG Emergency Diesel Generator DGVSS Degraded Grid Voltage Signal with SIAS LOVS Loss of Voltage Signal l

NCR Non Confonnance Report Para. Paragraph SDVS Sustained Degraded Voltage signal I SR Surveillance Requirement j SRSS Square Root Sum of the Squares Tol. Tolerance l

TLU l

Total Loop Uncertainty l

l t

b sCE 2MS REv.1 ar9e [

REFERENCE:

SO121XKN1.15l E4C006rin16.wod i

l

E&TS DEPARTMENT ICCN NO1 CALCULATION SHEET PRM WN No. N-15 PME _@_ OF_S0_

CCN CONVEASION: -

Project or DCP/FCN UNITS 2 & 3 CCN NO. CCN -

Calc No. E4C-098 -

Subject 4 KV SWITCHGEAR_EROTECTIVE RELAY SETTING CALCULATIOE Sheet of HEv OROINAIOR DAit RE DATE Atv mn NATOR OAih ikE QATE g Joon Kim D. Lennata D

" Q-INTENTIONALLY LEFT BLANK l 1

l SCE 26426 REY.1496 (NE SERENCE: 8012}XXV-7.15] E4CC98rinil wpd

E&TS DEPARTMENT #CCN NOJ CALCULATION SHEET = c= "" '" 5 "^"" * *

• I CCN CONVERSION: I Project or DCP/FCN UNITS 2 & 3 Cale No. E4C-098 CCN NO. CCN -

h J I

Subject 4 KV SWITCHGEAR PROTECTIVE 3ELAY SETTING CALCULATION Sheet - of I REV oH66t<AIOR oAIE 6E DAIE REV ORGsNATOR DAIk IHL DAih

{ g Joan Kirn B.LennatJ B9 Y

H EVALUATION / COMPUTATIONS 8.1 TLU calculation 8.1.1 Measuring and testing equipment (M&TE) tolerance 8.1.1.1 Ruke 45 tolerance (refer to paragraph 4.2.5)

Voltace - 300 V rance

a. M&TE accuracy requirement Euke 45 multimeter random accuracy is 10.2% + 10 digits Since the resolution at medium sampling rate on the 300 V range is 10 mV, the reference accuracy is 1(0.2% +10x0.01 V) - (0.2% + 0.1V)

If the device is set near 121 V, then 0.1 V is equivalent to ahmt 0.083%. Therefore, the random accuracy of Fluke 45 multimeter is i0.283 %.

tx M&TE readability requirement The resolution at medium sampling rate on the 300 V range is 10 mV.

If the relay is set near 121 V, then 10 mV is equivalent to about t0.0083%.

c. M&TE temperature requirement Per Fluke 45 specification the temperature coefficient of Fluke 45 voltmeter is less than 0.1 times the applicable accuracy of10.283%

per degree C for O'C to 18'C and 28*C to 50*C (32*F to 64.4*F and 82.4*F to 122*F). The temperature range at SWGR room is 5&F to 95'F.

Temperature range to be considered-5&F (l &C) to 64.4*F (18'C) or 82.4*F (28'C) to 90*F (32.2*C).

At S&F (10*C) ambent te nperature, M&TE temperature effect is (0.1/ degree C) x 8'C x 10.283% -

t0.2264%

d. M&TE reference standard requirement 25% of M&TE accuracy is 0.25 x 10.283% - 10.07%

e. 2 2 SRSS total = i(0.2832 + 0.00832 + 0.2264 + 0.07 )"% - 20.369%

SCE Pt>d26 REV 1896(REFERENCE SO123. xxiv.715] E4CU9erint5 wod

r-E&TS DEPARTMENT ICCN NOJ CALCULATION SHEET PRELIM. CCM No. N-15 PAGE 37 OF.E CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 "" ' ##

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE REI AY SETTING CALCULATION Sheet of AEV OA624ATOR DAIE tH ei DAlk AEV OR6INATOH DATE LAt: DATE Joon Kim B. Lennartz 6

d9 Y

8.1.1.2 Wilmar timer SC.101, tolerance (rekt to para. 4.2.6)

Dry contact and DC voltage:

a. M&TE accuracy requirement Wilmar timer SC-101 random accuracy is i 1 millisecond.

If the timer measures approximate 10 seconds, then 0.001 second is equivalent to 0.01%.

h M&TE readability requirement Since the least significant digit is 0.001 second for millisecond range, If the tirner measures 10 seconds, then 0.001 second is equivalent to 10.01 %

c. M&TE temperature requirement: 0.06 %

d. M&TE reference standard requirement 25% of M&TE accuracy is 0.25 x 10.01 % - 10.0025%

e. 8 8 2 SRSS total - i(0.01 + 0.01 + 0.06 + 0.00252)-% - 10.062%

AC voltacc:

a. M&TE accuracy requirement Wilmar timer SC-101 random accuracy is i 1/4 cycle If the timer measures approximate 10 seconds, then 1/4 cycle is equivalent to about 0.042%.

h M&TE madability requirement Since the least significant digit is 0.001 second for millisecond range, If the timer measures 10 seconds, then 0.001 second is equivalent to about 10.01%

c. M&TE temperature requirement: 10.06 %

d. M&TE reference standard requirement 25% of M&TE accuracy is 0.25 x to.042% - 0.0105%

c. 2 2 SRSS total -i(0.042 + 0.01 + 0.06' + 0.0105 )%

2 10.075 %

SCE 26426 REV t 698 [REFERENCF: Sot 2Sxxfv.F 15) E4C09&tatSwod

E&TS DEPARTMENT ICCN NOJ CALCULATION SHEET Pam C N N . N-15 PME _&_ OF,g_

Project or DCP/FCN UNITS 2 & 3 cCN CONVERSION:

""' (

Calc No. E4C-098 >

l Subject 4 KV SWITCHGEAR PROTECTIVE RET AY SETTING CALCULATION Sheet - of REV ORGr4AT OR DATE ARE DAlh Hev OHKje4A T OR DATE ARE DATE g i Joan Kim B Lennartz t

x

.1.

8.1.2 *telay voltage tap tolerance 8.1.2.1 Tolerances to be considered a M&TE (Fluke 45) tolerance (refer to para. 8.1.1.1)

! Random: 10.369 %

e Voltage transformer accuracy l

Random: 10.3% (refer to para. 4.2.3) ,

l s 27N Relay Tolerance (refer to para. 4.2.2)

Random : Pickup and dropout settings, repeatability at constant temperature and constant control voltage - 10.1 %

Pickup and dropoc! seuings, repeatability over allowable de control power range - 0.1%

Pickup and dropout settings, repeatability over temperature range - 10.4% for a relay with Harmonic Filter (HF). The ESF SWGR room temperature will be maintained between 50' F (10' C) and 95* F (35* C) during normal and ernergency 1 operations (reference 4.2.4).

e Voltage setting tolerance l

Random accuracy 10.1 V ( refer to para.3.3) l If the relay is se: near 121 V, then 0.1 V is equivalent to about I

! 0.083 %. I s l Miscellaneous tolerance '

l Random tolerance 10.36% (refer to para. 3.4) 1 8.1.2.2 TLU of 27N relay circuit design limit j l l'

a. 27N Relay pickup and dropout setting, repeatability over allowable de control power - 10.1%

i

b. 27N Relay pickup and dropout setting, repeatability over temperature range - 10.2% without HF and 10.4% with HF l

l 8CE 26426 REV 1 MS lREFE9ENCE: S0123 XXIV-7.15] E4C098rin15.=pd 1

I

f E&TS DEPARTMENT ICCN NO/

CALCULATION SHEET PRELIM. CCN NO. N-15 PAGE 09 CF50 CCN CONVERSION; Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 Subject d KVSWIICliGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORGINATOH l OATE IHE oATE REV OHGAAIOH DATE IRE DATE l Joan Kim (L Lennartz ha

.L

c. 27F Relay pickup and dropout setting, repeatability at constant j tem xrature and constant control voltage - 10.1%

i

d. M&TE requirement = 10.369% I l

l e. Voltage setting tolerance = 0.083%

f. FT tolerance - 10.3%

g. Miscellaneous tolerance = 0.36%

2 2 2 2 2

, TLU - i( OL1 + 0.4 + 0.1 + 0.3692 + 0.0832 + 0.3 + 0.36 )"% - 0.737%

1 8.1.2.3 Tolerance for allowade values during surveillance test (relay orJy)  !

Voltage setting tolerance: 10.083 %.

l i

Miscellaneous tolerance

t0.36%

2 Tolerance for allowaNe value - i(0.083 + 0.362)"% - +0.37%

8.1.2.4 As-Left setting (relay ordy) 10.1 V (refer to para. 3.3) l l

SCE 2H26 REY.1 M4 ftEFERENCE: SOI2SIOUV.T.151 E4C008:te tS.wed I

E&TS DEPARTMENT ICCN C601 CALCULATION SHEET "a" " "'S "" #

• CCN CONVERSICN:

Project or DCP/FCN UNITS 2 & 3 Cale No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet - of ncv oncmroa o4re. i me 04rc nov onc,maios oare ise 04re g-Joon Kim 8. Lennartz

$2

.L 8.1.3 TLU of 27N relay time delay setting 8.1.3.1 Tolerances to it considered: '

i e M&TE (Wilmar SC-101) tolerance (refer to para. 8.1.1.2)

Random 10.062%

e 27N relay tolerance (refer to para. 3.6)

I Accuracy: 15 %

Temperature etTect: 10.1 %

Power supply: 10.1%

2 2 2 SRSS total - (5 + 0.1 + 0.1 )2% - 15.002%

a Time setting tolerance Random 10.02 second - (0.02 sec. / 2 sec.)- 21% (refer to para. 3.5) e Miscellaneous tolerance Random 8.66% (refer to para. 3.6) 8.1.3.2 27N relay time delay tolerance 8.1.3.2.1 TLU for desgn limit 2 2 2 2 SRSS toral - i(0.062 + 5.002 + 1 + 8.66 )2% - i 10.05 %

8.1.3.2.2 Tolerana for allowaNe values during surveillance test Time setting tolerance 21%

Misallaneous tolerance - 18.66%

2 SRSS total - f(1 + 8.66')"% - 18.72%

8.1.3.2.3 ASIzft setting 0.02 second (refer to para. 3.5)

SCE 2H26 REY.1 ese [REFERENeE 90123-XXIV 7.15] E4@8tlatSamis

E&TS DEPARTMENT iccN NO3 CALCULATION SHEET PRcuM. ccN No. N-15 PACE __ di OF A CCN CONVERSION: -

Project or DCP/FCN UNITS 2 & 3 ""

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet __ of REV t ORIGddTOR DATE EE l DATE REv ORKWeTOR DAie IAE DAT&

Jour Kim B. Lennetz Ez-

.L 8.1.4 TLU of CV 2 relay voltage tap 8.1.4.1 Tolerances to tr considered a MATE, Fluke 45, tolerance - 10.369% (refer to para. 8.1.1.1) e Voltage trans'ormer accuracy - 10.3% (refer to para. 4.2.3 s CV-2 relay accuracy - 13% (refer to para. 4.2.1) a Miscellaneous tolerance - 11.29% (refer to para. 3.4) 8.1.4.2 TLU of CV-2 relay circuit 8

SRSS total -i(0.369' 4 0.3 + 3' + 1.29'T % - 13.3%

Since the voltage setting of the CV 2 relayis a arbitrary setting, this TLU v31 be used to verify the operability of the CV 2 relay.

l l

8.1.4.3 As-Left setting 11% (refer to para. 3.3) 1 8.1.5 TLU of CV 2 relay time delay setting (refer to para. 3.8 & Attach. 9.10 of CCN 20 to E4C-098) 8.1.5.1 Tolerances to te considered- I a M&TE, Wilmar SC-101, tolerance (refer to para. 8.1.1.2) 0.062 %

e CV 2 relay tolerance 15 %

8.1.5.2 CV-2 relay time delay tolerance SRSS total = 1(0.062' + 5')"% - 15%

8.1.5.3 As-Left setting 11% (refer to para. 3.3)

SCE 2926 AEY 1498 (RE*ERENCE: Scipm.715] EMerall.wpo

/

F Pr2)ect er DCP/FCN UNITS 2 & 3 Calc No. E4C-098 l""'"" W l E&TS DEPARTMENT CCN NO/

CALCULATION SHEET "a5" cc" " " 'S '^ " *L 'A CCN CONVERSION: g CCN NO. CCN -

! Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 ')

Subject 4 KV SWITCHGEA.R PROTECTIVE RELAY SETTING CALCULATION Sheet of REV i OR4GINATOR DATE ARE DATE REV ORIGINA TOR oATE AE DATE g Joon Kim EL Lennatz h $

59 I Y

8.1.6 Tolerance of time delay relays 1625-1,2,3,&4 l

8.1.6.1 Tolerances to be considerei a MATE (Wilmar SC-101) tolerance (refer to para. 8.1.1.2)

Random 10.062%

e Relay tolerance Repeatability - 10.5% or 15ms whichever is greater.

(15ms is 0.35% (0.015 sec. / 4.3 sec. - 0.35%)]

Ambient temp. effets - 22%

Voltage variation effect - 12%

2 SRSS total - (0.5 + 22 + 22)'*% - 2.87%

e Time set:ing tolerance 10.05 sec. / 4.3 sec. - 11.163% (refer to para. 3.5) e Miscellaneous tolerance Random 23.13% (refer to para. 3.10) 8.1.6.2 Tolerance of time delay relays 162S-1,2,3.&4 8.1.6.2.1 TLU for design limit 2

SRSS total - 1(0.0628 + 2.872 + 1.163 + 3.13'f'% = 14.4%

8.1.6.2.2 Tolerance for allowable values during surveillance test Time setting tolerance - 11.16%

Miscellaneous tolerance -13.13%

SRSS total - t(1.162 + 3.132f'% - 13.34%

8.1.6.2.3 As.left setting 20.05 second (refer to para. 3.5) i ECE 2S426 MEV.1 D96 (

REFERENCE:

SO123.xxrV415) EaccGarintS end

i E&TS DEPARTMENT ICCN M31 CALCULATION SHEET PnELIM. CCNtto N-15 PAGE d3 OF 30 CCN CONVEASION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 CCN NO. CCN- (hf Subject 4 KV SWITCHGEAR PROTECMVE RELAY SETTING CALCULATION Sheet of sev oaomroa oArt i et i oAre sev osic. w os own m l e oAn g Joon Km 8.Lennet di "i

f 8.1.7 Tolerance of time delay relays 162T-1,2,3,&4 8.1.7.1 Tolerances to be considered:

a M&TE (Wilmar SC 101) tolerance (refer to para. 8.1.1.2) 10.062 %

a Relay accuracy - 110%

a Temperature effect on accuracy (refer to para. 3.9)

Since the maximum shift in the average of three consecutive time I delays from 77"F is 20% at 20*F and +20% at 165'F.

f

( 20% / 97'F) - 0.206%/*F and (+20% / 88"F) = +0.227%/*F At the SWGR room temperature of 50*F. -0.206% x 27'F - -5.562%

At the SWGR room temperature of 95"F, +0.227% x 18'F- +4.1%

15.562% will be used. {

e Time setting tolerance iO.05 second (refer to para. 3.5) 1(0.05 sec. /1.25 sec.)- 14%

a Miscellaneous tolerance - 129.3% (refer to para. 3.10) 8.1.7.2 Tolerance of time delay relays 162T-1.2.3.&4 8.1.7.2.1 TLU for design limit 8 2 2 2 2 SRSS total - i(0.062 + 10 + 5.562 + 4 +29.3 )% - 132%

8 l.7.2.2 Tolerance for allowable values during surveillance test Time setting tolerance - 4%

Miscellaneous tolers . - 129.3%

2 2 SRSS total - 1(4 r 29.3 f 2% - i29.87 %

8.1.7.2.3 As-left setting 10.05 second (refer to para. 3.5)

SCE 26426 AEW 1 $94 [ REFERENCE 50123-xxiv-F 16] E4000 erin 15.wed

I-EAT 3 DE'*ARTMENT CCN NO)

CALCULATION SHEET PRm ccNN . N-15 PA M _. M _ OF E ,

CCN CONVERSON:

Project or DCP/FCN UNITS 2 & 3 ""~

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORGINATO4 DATE HE { DATE REV l ORIGINATOR CAlt 6AE DATE c Joon Kim B. Lennaru &

g

.L 8.1.8 Tolerance of time delay relays 162D-1,2,3.&4 8.1.8.1 Tolerances to be considered:

a M&TE (Wilmar SC-101) tolerance (refer to para. 8.1.1.2) 10.062%

a Relay accuracy- t10%

a Temperature effect on accuracy (refer to para. 3.9)

Since the maximum shift in the average of three consecutive time delays from 77'F is -20% at .20'F and +20% at 1657.

(-20% / 97*F)- 0.206%/*F and (+20% / 88*F) - +0.227%/*F At the SWGR room temperature of 50*F, 0.206% x 27*F - 5.562%

At the SWGR room temperature of 95'F, +0.227% x 18*F - +4.1%

15.562% will te used.

m Time setting tolerance t2 seconds (refer to para. 3.5)

(2 sec. /110 sec.) = 11.8%

a Mi scellaneous tolerance - il 6.3% (refer to para. 3.10) 8.1.8.2 Tolerance of time delay relays 162D-1.2.3,&4 8.1.8.2.1 TLU for designlimit 2 2 2 SRSS total = f(0.062 + 10 + 5.5622 + 1.8 + 16.32)"% = 120%

8.1.8.2.2 Tolerance for allowable values during surveillance test Time setting tolerance 11.8 %

Miscellaneous tolerance -il6.3%

2 SRSS total - t(1.82 + 16.3 )"% = 116.4%

8.1.8.2.3 As-12ft setting 12 seconds (refer to para. 3.5)

SCE 2642S REY.1696[HEFEPENCE 8012SEXV-1.16} E4COGartat $.wed

I E&TS DEPARTMENT ICCN NOJ

! CALCULATION SHEET PRELIM. CCN No. N 15 PAGE C5 OF g CCN CCNVERSiON:

! Project or DCP/FCN UNITS 2 & 3 Cale No. E4C-098 r Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORIG 24A IoM OAik RE DATE REv ORKiAATOR oATE I Ek DATE Joon Kim IL Lermute g

d@

Y 8.2 27N Relay Voltage Setpoints 8.2.1 Gisen data for 27N relay setting

+ 27N relay reset voltage at 4.16 KV :

4201.75 V (base cale. E4C-098, rev.1)

• 27N relay dropout voltage:

99.5% of relay reset (pickup) voltage (refer to para. 4.2.2)

+ Relay circuit tolerance:

TLU for design limit - 10.737% (refer to para. 8.1.2.2)

Tolerance for allowable value 0.37% (re#cr to para. 8.1.2.3)

+ N ratio: 4200 V/120 V- 35 ( refer to para. 4.2.3) 8.2.2 27N relay setting - design limit N secondary voltage at 27N relay reset value - 4201.75 V / 35 - 120.05 V Minimum relay dropout voltage - 120.05 V x 0.995 (99.5% of pickup)- 119.45 V Minimum relay dropout primary voltage - 119.45 V x 35 - 4180.75 V TLU - :0.737% (refer to para. 8.1.2.2)

- 121 V x 0.00737 - 0.89 Y Consider an engineering margin of'U.46 V to agree with the existing nominal setting of 121.40 V.

Nominal relay reset (pickup) voltage - 120.05 V + TLU + Engineering margin

- 120.05 V + 0.89 V + 0.46 V

- 121.40 V Nominal relay reset (pickup) primary voltage - 121.40 V x 35 - 4249.00 V Nominal relay dropout voltage - 121.40 V x 0.995 - 120.80 V Nominal relay dropour primary voltage - 120.80 V x 35 - 4228.00 V Maximum relay reset (pickup) voltage - 121.4 V + TLU + Engineering margin

- 121.4 V + 0.89 V + 0.46 V

- 122.75 V Maximum relay reset (pickup) primary voltage - 122.75 V x 35 - 4296.25 V SCE 2S426 REV. I 818 (AE FERENCE: SO12>xxN.F.15] E4C094rIn15 wed I

L_

E&TS DEPARTMENT ICCN NO./

CALCULATION SHEET PRM C N No. 415 PAGE 4 & 50 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & R N N . CCN - q, Cale No. E4C-098 Subject 4 KV SWITCHGEAR PROYECTIVE RFI AY SETTING CALCULATION Sheet of REW ORINA TOR DATh 4RE i DAlt REv ORIGINATOR DATE 1RE DATE Joon Git B. t.ennau g

Pu e 4 Maximum relay dropout voltage - 122.75 V x 0.995 - 122.14 V Maximum relay dropout primary voltage = 122.14 V x 35 -4274.90 V The min. relay dropout voltage at 4.16 KV bus is 119.45 V x 35 - 4180.75 V or 1.005 p.u. which exceeds the post accident steady state voltages of 4.16 KV Class !E buses shown in paragraph 8.4.2 of CCN 20 to E4C-098.

8.2.3 27N relay setting - Allowable values (As-Found) during surveillance test Nominal relay reset (pickup) voltage - 121.40 V Nominal relay reset (pickup) primary voltage - 121.40 V x 35 - 4249.00 Nominal relay dropout voltage - 121.40 V x 0.995 - 1 O10 V Nominal relay dropout primary voltage - 120.80 V x 35 - 4228.00 V Tolerance fotallowde value - i0.37% (refer to para. 8.1.2.3)

- 121 V x 0.0037 - 0.45 V CorGr an engineering r.urgin of 0.46 V (refer to para. 5.1 & 8.2.2).

'vlinimum relay reset (pickup) voltage - 121.4 V TLU Engmeeting margin

- 121.4 V - 0.45 V - 0.46 V

- 120.49 V  ;

Minimum relay reset (pickup) primary voltage - 120.49 V x 35 - 4217.15 V Mmimum relay dropout voltage - 120.49 V x 0.995 - 119.89V Minimum relay dropout pnmary voltage - 119.89 V x 35 - 41%.15 V '

Maximum relay reset (pickup) voltage - 121.40 V + TLU + Engineering margin

- 121.4 V + 0.45 V + 0.46 V

- 122.31 V Maximum relay reset (pickup) primary voltage - 122.31 V x 35 - 4280.85 V Maximum relay dropout voltage - 122.31 V x 0.995 - 121.70 V Maximum relay dropout primary voltage - 121.70 V x 35 -4259.5 V 8.2.4 27N relay setting - As-left setting during surveillance test (refer to para. 8.1.2)

Nominal relay reset (pickup) voltage - 121.40 V Nominal relay reset (pickup) primary voltage - 121.40 V x 35 - 4249.00 (1.021 p.u.)

Nominal relay dropout voltage - 121.40 V x 0.995 - 120.8 V Nominal relay dropout primary voltage - 120.80 V x 35 - 4228.00 V (1.016 p.u.)

SCE 26426 PEV 169BIREFERENCE 80123 XXV7.tS] Escoektat5.wixi

i E&TS DEPARTMENT icCN NO1 CALCULATION SHEET Peu. ccN N . N-15 PAGE 47 OF 1 CCN CONVERSION:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RFl AY SETTING CALCULATION Sheet of HEV OA6lhA T oA OAlk I 4HL DAIL Ht:V oRGINAToR ( DAIE eRE DAIE g Joan Kim & Lennutz it

.L Setting tolerance - 0.1 V (refer to para. 3.3)

Minimum relay reset (pickup) voltage - 121.40 V - 0.1 V - 121.30 V  !

Minimum relay reset (pickup) primary voltage - 121.30 V x 35 - 4245.5 V (1.021 p.u.)

l Minimum relay dropout voltage - 121.30 V x 0.995 - 120.7 V Minimum relay dropout primary voltage - 120.7 V x 35 - 4224.5 V (1.016 p.u.) l Maximum relay reset (pickup) voltage - 121.40 V + 0.1 V - 121.5 V Maximum relay reset (pickup) primary voltage - 121.5 V x 35 - 4252.5 V (1.022 p.u.)

Maximum relay dropout voltage - 121.5 V x 0.995 - 120.9 V Maximum relay dropout primary voltage - 120.9 V x 35 -4231.5 V (1.017 p.u.)

8.3 27N relay time delay setpoint (refer to para.s 3.5 & 8.1.3) 8.3.1 27N relay time delay design limit Setpoint - 2 seconds Design limit - 2 seconds i 10% - 2 seconds 10.2 second 8.3.2 27N relay time delay- Allowable value (As-Found setting) during surveillana test Setpoint - 2 seconds Allowable value 2 seconds i 8.72% - 2 seconds i 0.1744 second 8.3.3 27N relay time delay As-Left setting 2 seconds i 0.02 second SCE 2S426 REV. I 6961RESERENCE: So1nXXW.? 1S] E4C0981a1S.wps

E&TS DEPARTMENT secN NOl CALCULATION SHEET "a5 " ""- *5 "*"' " "#-

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Project or DCP/FCN UNITS 2 & 3 *"'#""

Calc No. E4C-098 Subject 4 KV SWITCHGEAR PROTECTIVE RELAY SETTING CALCULATION Sheet of REV ORIGNATOR I DATE fRE oATE REV ORIGNATOR DATE 6HE DATE g Jouri Kim & Lennsta E2 L  !

8.4 CV-2 Relay Voltage Setpoint ( refer to para.s 3.3,5.2.2, & 8.1.4) 1 8.4.1 Operating range of CV 2 relay  !

Relay setpoint: 105 V TLU of CV-2 relay: 13.3%

Since the function of the CV-2 is to generate LOVS on loss of voltage condition within a specific time, CV-2 relay with a fixed time dial will dropout at the same time on a loss of power condition regardless of voltage tap settings (existing voltage tap of 105 V is arbitrary). Therefore, TLU of13.3% for the CV 2 relay voltage tap will be utilized for Tech. Spec. and surveillance procedure.

Relay operating voltage, considering relay circuit inaccuracy:

Min. operating vol age at relay - 105 V x 0.967 - 101.54 V Min. operating voltage at bus - 101.54 V x 35 - 3553.9 V Max. operating voltage at relay - 105 V x 1.033 - 108.47 V Max. operating voltage at bus - 108.47 V x 35 - 37%.45 V l

8.4.2 CV-2 relay voltage tap As-left setting 105 V i 1% - 105 V i 1.05 V 8.4.3 in order to protect the 4.16 kV motors during a short time voltage dip, the CV-2 relay should operate within 15 seconds at 75% of rated motor voltage.

The voltage at the CV-2 relay corresponding to 75% of rated motor voltage:

V,,,, = (0.75 x rated motor voltage) /17T ratio

- (0.75 x 4160 V) / 35

= 89.1 V The voltage drop between 4.16 KV bus and a motor is considered negligible.

Considering relay circuit inaccuracy:

V a, - 89.1 V x 0.967 86.16 V Vo, .. = 89.1 V x 1.033 - 92.04 V These voltages correspond to 82.1% and 87.7% of the existing relay tap setting (105 V).

respectively. The existing relay (with 105 V tap and time dial #1) will operate within 5 seconds at these voltages.

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I-E&TS DEPARTMENT iccN NO./

CALCULATION SHEET PRELIM, CCN No. N-15 PAG 2 49_OF_50__

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Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098 N N . ccm h[

Subject 4 KV SWITCHGEARPROTECTIVE RELAY SETTING CALCULATION Sheet of Rkv OA0tNATOR DAlk IHE DATE RhV ORGINArOft DArE IPE DAIE

. loon Mm G. Lennats y

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_L 8.5 CV-2 relay time delay setpoint ( refer to para.s 3.5,3.8,5.2.2, & 8.1.5) 8.5.1 Existing setting Time dial of CV-2 relay was adjusted such that the time delay of the entire LOVS channel up to and including 127F-IX3 and 127F 1X1/127F1 X2 is 1.0010.05 seconds.

A LOVS channel consists of relay 127F1 and auxiliary relays 127F-IX3 and 127F-IX1/127F-lX2 in series. This timing requirement also applies to the LOVS channels associated with relays 127F-2,127F-3, and 127F-4.

8.5.2 Allowable values Since the upperlimit of the time delay is the limiting condition, adjust CV-2 relay time dial to limit the maximum time delay if the entire LOVS channel to 1.00 second.

considering TLU of the relay circuit and pickup time of the auxiliary relays 127F-1X3 and 127F-1X1/X2.

Time delay of the entire LOVS channel should bc X second + 5% of X second + 10 cycles (2-HFA relays operating time) s 1.0 second (Refer to CCN 20 to E4C-098 for HFA relay operating tome)

Where X is operating time of CV-2 relay on loss of voltage.

1.05X second + 10 cycles s 1.0 second 1.05X s 0.83 second,X s 0.79 second Adjust time dial to operate in 0.79 second on loss of voltage Upper limit - 0.79 sec. x !.05 + 10 cyc!cs - 0.9962 second < l.0 second Since the minimum operating time of the GE HFA relay is not availabic, only the CV-2 relay tolerance of 5% is conservatively considered.

Lowr.r limit - 0.79 x 0.95 - 0.7505 second 0.75 second s Allowable limit s 1.0 second M&TE tolerance of 0.062% (refer to para. 8.1.1.2)is considered negligible for less than I second time range.

8.5.3 As-Left setting Upperlimiu 0.79 sec. + 1 % (setting tolerance ) + 10 cycles - 0.965 second l

I Lower limit: 0.79 sec. 1% (setting tolerance ) = 0.782 second f

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1 E&TS DEPARTMENT CCNNOJ CALCULATION SHEET PREuu. C N N . N.15 PAGE 1 0F 1 l CCN CONV3RSON:

Project or DCP/FCN UNITS 2 & 3 Calc No. E4C-098

Subject 4 KV SWITCHGEAR PROTECTIVE RFI AY SETTING CALCULATION Stieet - of REV oRGhA f oH omik IHE l

DATE HEV ORGWAl oR CATE RE '

DATE g Joon Kim & Lamartz h !

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8.6 Time delay relay 162D-1,2,3,& 4 setpoint (refer to para. 8.1.8) 8.6.1 Serpoint for design limit l

Setpoint - 110 seconds 110 seconds i 20% = 110 seconds i 22 seconds 8.6.2 Setpoint for allowaNe value 110 seconds i 16.4% - 110 seconds i 18 seconds 8.6.3 As-Ieft setting 110 seconds i 2 seconds 8.7 Time delay relay 162S-1,2,3,& 4 setpoint (refer to para. 8.1.6) 8.7.1 Setpoint for design limit i Serpoint 4.3 seconds 4.3 seconds i 4.4% - 4.3 seconds 10.19 second 8.7.2 Setpoint for allowaNe value 4.3 seconds i 3.34% - 4.3 seconds 10.14 second 8.7.3 As left setting 4.3 seconds t 0.05 seconds 8.8 Time delay relay 167T 1,2,3,& 4 setpoint (refer to para. 8.1.7) 8.8.1 Setpoint for design limit Setpoint .1.25 seconds 1.25 seconds i 32% = 1.25 seconds i 0.4 second 8.8.2 Setpoint for allowable value 1.25 seconds i 29.87% - 1.25 seconds 10.37 second 8.8.3 As-left setting 1.25 seconds 10.05 seconds SCE 26 426 REV. t 996 (RE*fREACE. SO123.XXNJ 15] Eacceerin15capd

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