ML073120083
| ML073120083 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/05/2007 |
| From: | Southern California Edison Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC MD5112, TAC MD5113 E4C-015, Rev 0 | |
| Download: ML073120083 (66) | |
Text
Attachment 2 to Enclosure 2 Calculation E4C-015, Revision 0 TLU Calculation for Loss of Voltage Relays at Class 1 E 4.16 kV Switchgear
ICON NOJ CALCULATION TITLE PAGE PRELIM. CCN NO. I PAGE OF IICCN CONVERSION:
Calc. No. E4C-01 5 ECP No. & Rev. 010400749-16 CCN NO. CCN-Subject TLU Calculation for Loss of Voltage Relays at Class 1 E 4.16 kV S witchqear. Sheet 1 of 53 System Number/Primary Station System Designator 1804 / PBA. PBB SONGS Unit 2 &3 Q-Class I1 Tech. Spec./LCS Affecting? E] NO S YES, Section No. SR 3.3.7.3.b Equipment Tag No. 2(3)A04 and 2(3)A06 Site Programs/Procedure Impact? Z NO El YES, AR No.
10CFR50.59/72.48 REVIEW CONTROLLED COMPUTER PROGRAM / DATABASE IS THIS CALCULATION REVISION PROGRAM / DATABASE NAME(S) VERSION / RELEASE NO.(S)
BEING ISSUED SOLELY TO [] PROGRAM INCORPORATE CCNs/ECNs? El ALSO, LSTED BELOW 0 NO 0l YES El DATABASE AR No. N/A (see note 2) ACCORDING TO SO123-XXIV-5.1 RECORDS OF ISSUES REV. TOTAL PREPARED BY: APPROVED BY:
DESCRIPTION SHTS. (Print name/sign/date) (Signature/date)
DISC.
LAST SHT. Initial POS Block - Requires P0S T3EN64 Initial POS Blo*tRequires POS T3EN64 This cab, was issued ORIG. PQS VER. BY: TL FLS X . PQS VER. BY" 0 to support ECPs Joon Kim 3 L3o - -o7 Tom Ra-k 010400749-12,13, IRE / -Other POS VER. BY:
16, & 17 Bill Lenna r0 3 .'o[_4o7 ORIG. PQS VER. BY: - FLS P0S VER. BY:
IRE PQS VER. BY: __ Other P0S VER. BY:
ORIG. POS VER BY: - FLS P0S VER. BY:
IRE P0S VER. BY: Other POS VER. BY:
Space for RPE Stamp, identify use of an alternate calc., and notes as applicable.
Notes:
- 1. This calculation was prepared to support ECPs 010400749-12, 13, 16, & 17 to replace the existing LOV relays (CV-2) with Basler relay BE1-27.
This calc. was prepared for the identified ECP. ECP completion and turnover acceptance to be verified by receipt of ECP Turnover/Closure form directing Conversion. Upon receipt, this calc. the represents the as-built condition. ECP Turnover/Closure form date by SCE 26-121-1REV.9 12JQ5
IREFERENCE:
S0123-XXV-7.151 SITE FILE COPY Site File Copy E4C-015
CALCULATION CROSS-INDEX [ NO./CCN NO.
PRELIM.
ECN PAGE - OF Calculation No. E4C-01 5 Sheet 2 of I CCN NO.
CCN CCN--
CONVERSION: I INPUTS OUTPUTS Calc. rev. Does the Identify output interface number and These interfacing calculations and/or Results and conclusion of the output interface calc/document responsible documents provide input to the subject subject calculation are used in calc/document FLS initials calculation, and if revised may require these interfacing calculations require CCN, ECP, TCN/Rev., or and date revision of the quhject calculation. and/or documents, Change? tracking number.
Caic/Document No. Rev. No. Caic/Document No. Rev. No. YES I NO Calculations Technical Specification 174 YES PCN 577 E4C-082 3 DBD-S023-120 6 YES ECN A42882 Rev. 0 / E4C-090 5 90042 12 YES ECNs A44943, A44944, E4C-098 3 A42685, & A4268 E4C-130 1 J-ZZZ-069 0 E4C-098 4 YES ECN A42167 M-073-061, CCN 4 4 Drawings S02-11-11.1A-2 4 YES AR 010400749-26 30192 12 S02-11-11.1B-2 4 YES AR 010400749-26 30220 sh. 1 13 S03-11-11.1A-2 4 YES AR 010400749-26 7/4 30220 sh. 2 2 S03-11-11.1B-2 5 YES AR 010400749-26 30299 18 IDA 30230 sh. 1 15 30230 sh. 2 2 30300 16 30301 14 32192 13 32220 sh. 1 12 32220 sh. 2 3 32299 14 32230 sh. 1 12 32230 sh. 2 4 32300 14 32301 13 SCE 26-424 REV. 6 12/05 [
REFERENCE:
S0123-XXIV-7.I5[
CALCULATION CROSS-INDEX Calculation No. E4C-01 5 Sheet 3 of __
INPUTS OUTPUTS Caic. rev. Does the Identify output interface number and These interfacing calculations and/or Results and conclusion of the output interface calc/document responsible documents provide input to the subject subject calculation are used in calcidocument FLS initials calculation, and if revised may require these interfacing calculations require CCN, ECP, TCN/Rev., or and date revision of the subject calculation, and/or documents. Change? tracking number.
Caic/Document No. . . Rev. No. Caic/Document No. Rev. No. YES I NO Vendor DWGs 1814-AF316-MOO05 0 Rev. 0/ 1814-AF316-M0007 0 SONGS documents and procedures 90042 12 DBO-SO23-120 6 DBD-S023-TR-EQ 8 JS-123-103C 4 S023-403-12 2
"* , S02-11-11.1A-2 4 S02-11-11.1 B-2 4 S03-11-11.1A-2 4 S03-11-11.1 B-2 5
REFERENCE:
S0123-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO.
CALCULATION SHEET 1Paoe ofI Project or ECP: SONGS 2 & 3 Calc No. E4C-015 I CCN CONVERSION:
CCN NO. CCN
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear ShArt 4 Af Sheet 4 of REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz A cŽ TABLE OF CONTENTS
- 1. PURPODE ................................................................................................................... 5
- 2. RESULTS/RECOMMENDATION/MARGIN ............................................................................ 7
- 3. ASSUMPTIONS ........................................................................................................... 14
- 4. DESIGN INPUTS ............................................................................................................. 18
- 5. METHODOLOGY .......................................................................................................... 23
- 6. REFERENCES ............................................................................................................. 27
- 7. NOMENCLATURES ...................................................................................................... 29
- 8. CALCULATION ........................................................................................................... 31
- 9. ATTACHMENTS .............................................................................................................. 45 4-SCEC26-426 Rev. 3 1
Reference:
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear Sheet 5 of REV ORIGINATOR DATE IRE IDATE REVI ORIGINATOR DATEI IRE DATE 0 Joon kim Bill Lennartz I I I I PURPOSE 1.1 Purpose The purpose of this calculation is to perform an analysis associated with the Undervoltage Relays (Basler BE1-27) used for Loss of Voltage (LOV) Protection in the Class 1 E 4.16 kV Switchgears 2A04, 2A06, 3A04, and 3A06. The following analyses are performed for these relays:
A. Determine the Total Loop Uncertainty (TLU) and Allowable Value Tolerance (AVT)
B. Determine the Nominal voltage tap and time dial setting of the UV relay C. Determine the As-Found and As-Left acceptance for the voltage tap pickup setting and time delay D. Determine the New Technical Specifications Allowable Values 1.2 Background The current design of the SONGS diesel generator (DG) and Loss of Voltage Signal (LOVS) systems fully comply with their surveillance requirements (SRs), described in 3.3.7.3.b ("Loss of Voltage Function") and 3.8.1.11 .c.1 (AC sources - Operating), in verifying that the system responds properly and starts the DG within 10 second. For the supporting component basis, the design calculations assume that to meet these SRs, the LOVS relays (including auxiliary relays) will reset within 0.6 seconds following the DG starting and ready for energizing 4kV Engineered Safety Features (ESF) buses within the 9.4 seconds. During surveillance testing of DG, it was determined that the reset time of the LOVS relays (including auxiliary relays) exceeds its allowable time. As a result, in the actual plant installation, the LOVS relay channels actuate slower than the 0.6 second timing limit assumed in the calculation, while DG start times are sufficiently faster than the 9.4 seconds. Hence, the system has always met the 10 second limit described in the Technical Specification SR 3.8.1.11. In order to ensure that the 10 second DG start and the 4.16kV bus undervoltage relay logic reset time limit is not exceeded, station surveillance procedure (reference 6.3.9) for the DG has been revised to limit the allowable DG starting time from 9.4 seconds to 9.0 seconds. This allows an additional 400 ms for the LOVS relays to reset and close the DG breaker within the required 10 second time limit.
In order to expand the operating margin for the DG start time limit to its original allowance of 9.4 seconds, the existing electro-mechanical LOV relays (Westinghouse relay type CV-2) will be replaced with fast acting electronic LOV relays (Basler relay type BE1 -27).
1.3 Acceptance Criteria a) The time delay of the BE1-27 relay should be selected such that the time delay of the entire LOVS channel up to and including 127F1-X3 and 127F1-X1/127F1-X2 is < 1.0 second as required by Tech. Spec. SR 3.3.7.3.b. This timing requirement also applies to the LOVS channels associated with relays 127F2, 127F3, and 127F4.
b) LOV scheme should not actuate on a voltage dip during load sequencing or the largest motor starting.
SCE 26-426 Rev. 3 I
Reference:
SO I23-XXIV-7.15]
ICCN NOI E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
I CCN NO. CCN I Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Subiect: TLU Calculation for Loss of Voltaae Relay at Class 1E 4.16 kV Switchqear Sheet 6 of REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE I 0 Joon kim Bill Lennartz c) Since Class 1E motors (460 V and 4.16 kV) are capable of sustained satisfactory operation with a voltage dip to 75% of rated voltage for 15 seconds (reference 6.3.6), the LOV relay should operate within 15 seconds at 75% of the rated motor voltage.
d) The minimum operating voltage of LOV relay should be greater than the voltage at Class 1 E 4.16 kV buses corresponding to 75% of the nominal switchyard voltage of 230 kV per INPO SOER 99-1 (reference 6.3.10) 1.4 Degree of Accuracy The results of the TLU portion of this calculation are based on statistical methods in accordance with SCE Engineering Standard for Instrument Setpoint/Loop Accuracy Calculation Methodology, JS-123-103C (reference 6.3.7). A 95% probability at 95% confidence level as endorsed by RG 1.105 (reference 6.2.1) is used. Uncertainties are calculated to the nearest 0.001%. Uncertainties and effects which are less than 0.001% will be deemed negligible for purposes of this calculation (see assumption 3.1.12).
The results of this calculation are valid under the assumptions specified in Section 3.
I-SCE 26-426 Rev. 3 (
Reference:
SO]123-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET Project or ECP: SONGS 2 & 3 Calc No. E4C-015 I
m CCN CONVERSION:
CCN NO. CCN 1 NI
~iihi~-t TI II (~nkiIRtinn fnr I n~ nf VnIt~n~ Rg~Iav ~mt(~IR~ IF A I~ kV uitr4~n~nr Sheet 7 of REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE I DATE 0 Joon kim Bill Lennartz U, 2 RESULTS/CONCLUSIONS/MARGIN 2.1 Results/Conclusions 2.1.1 The LOV relay settings (127F1, 2, 3, & 4 relays - Basler BE1-27).
Voltaae tar settinas (reference section 8.1 Table 2.1.1 (see Notes 1, 2, & 3 for definition of pickup and dropout and instrument)
Allowable (As-found) Values As-left Values Operating range (AVT = +/- 0.673 %) (Max. setting Tol. = +/- 0.5 V)
(TLU dead-0b935 +0.91V) (Max dead band = +0.52 V) (Max dead band = +0.52 V)
Item (Max dead band = +0.525 V) (Note 4)(Note 4)
Relay (V) Primary (V) Relay (V) Primary (V) Relay (V)
Max. Relay 106.485 3721.61 106.23 N/A 106.02 Dropout (reset)
Max. Relay 105.96 3703.26 105.71 3694.52 105.5 Pickup I Nominal relay 105.525 3688.06 105.52 N/A 105.52 Dropout (reset)
Nominal relay 105.0 3669.71 105.0 3669.71 105.0 Pickup Min. Relay 104.545 3653.81 104.81 N/A 105.02 Dropout (reset) I Min. Relay 104.02 3635.46 104.29 3644.89 104.5 Pickup I I I Notes 1. Pickup: Relay output contact closes on undervoltage fault.
- 2. Dropout (reset): Relay output contact opens on voltage recovery.
- 3. Instrument to measure voltage should be Fluke 45 with a user selected reading rate of medium and voltage range of 300 V or better.
4 Since the resolution of M&TE (Fluke 45) is 0.01 V, the max. dead band of 0.52 V was applied to As-Found and As-Left values for conservatism.
Timp dekinv -,Pttinn- trpfprenrpe sectinn R 91 Allowable (as-found) value Allowable (as-found) value for As-left value for Item for LOV relay only LOVS channel LOV relay only (Note 2) (Notes 1 & 2) (Note 2)
Voltage change Voltage change from 115.5 v to 57 V Maximum 0.83 seconds 0.81 seconds Nominal 0.76 seconds Ž0.69 seconds and
- 1.0 seconds 0.76 seconds Minimum 0.69 seconds 0.71 seconds Notes: 1. The LOVS channel consists of a LOV relay (127F1) and auxiliary relays 127F1-X3 and 127F1-X1/127F1-X2 connected in series. The time delay of the entire LOVS I-SCE 26-426 Rev. 3 l
Reference:
S0123-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET Project or ECP: SONGS 2 & 3 I
CCN CONVERSION:
CCN NO. CCN I I
Calc No. E4C-015
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchqear Sheet 8 of REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I <
channel up to and including the auxiliary relays is
- 1.0 second. This timing requirement also applies to the LOVS channels associated with relays 127F2, 127F3, and 127F4.
- 2. Instrument to measure time should be Wilmar SC-1 01 with a user selected range of millisecond or better.
2.1.2 Surveillance Requirements of Tech. Spec. section 3.3.7.3 (refer to section 8.2.6):
Section Existing Recommended Loss of Voltage Function (127F-1) Loss of Voltage Function (127F1, 2, 3, &4):
SR 3.3.7.3.b z 3594 V and 5 3796 V > 3644.89 V and < 3694.52 V Time delay: Time delay:
Ž0.75 seconds and ý 1.0 seconds Ž0.69 seconds and < 1.0 seconds at 0 V (voltage change from 115.5 V to 57 V) 2.1.3 The LOV scheme meets the acceptance criteria specified in section 1.3 as follows:
a) The time dial of BE1 -27 relay was selected such that the time delay of the entire LOVS channel up to and including the auxiliary relays is < 1.0 second as required by Tech.
Spec. SR 3.3.7.3.b (refer to section 8.2.4).
b) LOV scheme will not actuate on a voltage dip during load sequencing or the largest motor starting (refer to section 8.2.4).
c) The LOV scheme will operate within 3 seconds at 75% of the rated motor voltage to protect Class 1E motors from voltage dip (refer to section 8.2.4).
d) The minimum operating voltage of LOV relay is greater than the voltage at Class 1E 4.16 kV buses corresponding to 75% of the nominal switchyard voltage of 230 kV (refer to section 8.1.6)
SCE 26-426 Rev. 3 {
Reference:
S0123-XXIV-7.15]
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear Sheet 9 of REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE Joon kim Bill Lennartz C.3 2.2 Recommendations 2.2.1 Revise LOV System Surveillance Procedures (reference 6.3.8, and any others affected; Maintenance to identify.) to change the allowable as-found and as-left values of LOV relays to the values shown below:
LOV relay IDs: 2(3)A0415-127F1, 2, 3, & 4 2(3)A0615-127F1, 2, 3, & 4 Voltage tag settins Allowable (as-found) value (V) As-Left Values (V)
(Nominal pickup = 105 V) (Nominal pickup = 105 V)
(Max. dead band = +0.52 V) (Max. dead band = +0.52 V)
Pickup Dropout Pickup Dropout 104.29 to 105.71 104.81 to 106.23 104.5 to105.5 105.02 to 106.02 Notes: 1. Pickup of BEl-27 relay: relay output contact closes on undervoltage fault.
Dropout of BEl -27 relay: relay output contact opens on voltage recovery.
- 2. Instrument to measure the voltages should be Fluke 45 with a user selected reading rate of medium and voltage range of 300 V or better.
- 3. Since the resolution of M&TE (Fluke 45) is 0.01 V, the max. dead band of 0.52 V was applied to As-Found and As-Left values for conservatism Time delay settings:_
Allowable (as-found) Allowable (as-found) As-left value for Item value value for LOVS channel LOV relay only for LOV relay only (Notes 1 & 2) (Note 2)
(Note 2) (Note 2)
Voltage change From 115.5 V to 57 V Nominal time delay 0.76 V 0.76 V setting I0.69 seconds and Time delay range T0.69 seconds and
- 0.83 seconds 1*1.0 seconds z0.71 seconds and
< 0.81 seconds (Note 2) (Note 2)
Notes:
- 1. The LOVS channel consists of a LOV relay (1 27F1) and auxiliary relays 127F1 -X3 and 127F1-X1/127F1-X2 connected in series. The time delay of the entire LOVS channel up to and including the auxiliary relays is 5 1.0 second. This timing requirement also applies to the LOVS channels associated with relays 127F2, 127F3, and 127F4.
- 2. Instrument to measure time should be Wilmar SC-1 01 with a user selected range of millisecond or better.
The implementation of this requirement will be tracked by AR 010400749-26 SCE 26-426 Rev. 3 1
Reference:
SOl 23-XXIV-7.151 E4C-015
ICON NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 10 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchlear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I 2.2.2 Revise Tech. Spec. SR 3.3.7.3.b as shown below:
Section Existing Recommended Loss of Voltage Function (127F-1) Loss of Voltage Function (127F1, 2, 3, &4):
SR Ž 3554 V and < 3796 V > 3644.89 V and s 3694.52 V 3.3.7.3.b Time delay: Ž0.75 seconds and
- 1.0 Time delay:
seconds at 0 V 20.69 seconds and !51.0 second (voltage change from 115.5 V to 57 V)
The implementation of this requirement will be tracked by PCN 577 2.2.3 Update the DBD Revise DBD-S023-120 (Reference 6.3.4) to reflect the relay replacement.
The implementation of this requirement will be tracked by ECN A42882 to DBD-S023-120.
2.2.4 Determine the following drift values of BE1 -27 relay, based on relay test data (reference AR 010400749);
" Voltage tap setting
" Time delay setting The implementation of this requirement will be tracked by AR 010400749-38.
2.2.5 Increased Frequency of Relay Setpoint Checks In order to validate assumptions 3.2.1 and 3.2.2, "As-Found" and "As-Left" data for the relay Dropout and Pickup values must be taken within 6 months of operation at the new setpoints.
All data taken shall be forwarded to engineering for analysis. If any allowable values are exceeded during this interval, Engineering will evaluate the assumption and calibration methodology. Otherwise, Engineering will determine from the data collected, ifthe assumptions and calibration methodology are correct and determine a new calibration interval for these relays.
The implementation of this requirement will be tracked by AR 010400749-37 2.2.6 Add bus voltages data for sequence time between 32.701 seconds to 33.501 seconds to base calculation E4C-082.
The implementation of this requirement will be tracked by AR 010400749-39.
I.-
5C E26-426 Rev. 3 IRelerence: SOl 123-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Panp of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 11 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz T 2.3 Margin The margin is established by one primary source of conservatism included in this calculation. It is the miscellaneous allowance of +/- 0.5% (section 3.1.10).
I-SCE 26-426 Rev. 3 i{
Reference:
SO123-XX[V-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 talc No. E4C-015 Sheet 12 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz'-
INTENTIONALLY LEFT BLANK
- 1-SCE 26-426 Rev. 3 {
Reference:
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 13 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchaear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE c o oo kim Bill Lennartz IIr INTENTIONALLY LEFT BLANK SCE 26-426 Rev. 3 1
Reference:
SO 123-XXIV-7.15]
- 1~
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET Project or ECP: SONGS 2 & 3 E4C-015 CCN CONVERSION:
CCN NO. CCN 7 I
Calc No.
Sheet 14 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchqear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE TE 0 Joon kim Bill Lennartz CCI 3 ASSUMPTIONS 3.1 Assumptions Which DO NOT Require Verification 3.1.1 BE1 -27 relay tap setting tolerance 3.1.1.1 Voltage tap setting tolerance Basler stated in their e-mail (Attachment 9.4) that it is reasonably easy to set the relay within 0.25 V. Therefore, it was assumed that the pickup voltage tap setting tolerance is +/-0.5 V.
3.1.1.2 Time delay tap setting tolerance Inverse time delay of the BE1 -27 relay is adjustable from 01 to 99 in increment of 01.
Each increment is approximately 50 ms (Attachment 9.6). Therefore, it was assumed that time delay tap setting tolerance is +/- 50 ms 3.1.2 Calibration temperature allowance (Te)
Since the Class 1E SWGR rooms are environmentally controlled with normal &emergency chillers, calibration temperature is assumed to be between 55°F and 82 0 F (Section 4.3 normal environmental conditions, not calibrated during a LOCA). This temperature band includes the range of temperatures from summer to winter conditions.
Since the operating temperature range of relay BE1 -27 is -400 C (-40 0 F) to 70°C(158 0 F) and temperature effect is not specified by manufacturer, it is assumed that temperature effect is included in the relay accuracy.
3.1.3 Humidity Effect Since the humidity effect is not specified by the manufacturer, it is assumed to be included in the temperature effect, per JS-1 23-103C (reference 6.3.7).
3.1.4 Pressure Effect Since the LOV relay loops consist entirely of electrical/ electronic components, the error induced by normal environmental pressure changes is negligible and is therefore not considered in this calculation. There are no additional accident pressure considerations associated with this environment (see Section 4.3).
SCE 26-426 Rev. 3 1
Reference:
SO] 23-XXIV-7.15]
a-E4C-015
ICCN NO/1 E&TS DEPARTMENT PRELIM. CCN NO. Paaip of I.AL JULA I lUN b111 II CCN CONVERSION:
I CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 15 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE c Joon kim Bill Lennartz _
0 3.1.5 Radiation Effect (Re)
The ESF SWGR room is a low radiation area during both accident and normal conditions (mild environment; section 4.3). Therefore, the error induced by normal radiation effects to the LOV Relays and Potential Transformers is assumed to be negligible.
3.1.6 Seismic Effect (Se)
The LOV Relays are seismically qualified devices. Therefore, the Seismic Effect for the LOV Relays is considered negligible.
3.1.7 Power supply effects (PSe)
Since the power supply effects on the LOV relay (BE1 -27) is not specified by the manufacturer, it is assumed to be included in the relay accuracy.
3.1.8 Measuring and Test Equipment Test equipment with an accuracy equal to or better than a Fluke 45 multimeter with a user selected reading rate of medium and voltage range of 300 V and Wilmar SC-101 timer with a user selected range of milliseconds are to be used for calibration of the LOV relays (refer to sections 4.4 & 4.5 for detailed specifications).
3.1.9 Potential Transformer Accuracy The same potential transformers are used for degraded grid voltage (DGV) relays and LOV relays. The potential transformer accuracy was calculated for DGV relays in calculation E4C-130 (reference 6.1.2). Therefore, the potential transformer accuracy for LOV relay calculation is assumed to be the same as the PT accuracy calculated in calculation E4C-1 30.
3.1.10 Miscellaneous Allowance (Ma)
Per JS-123-103C (Reference 6.3.7), the standard miscellaneous allowance of +/-0.5% of span is generally assumed. The standard does allow the value to be changed "at the Engineer's discretion". The typical value is utilized in this calculation.
3.1.11 LOV relay (Basler BE1 -27) dropout (reset) accuracy The instruction manual (reference 6.5.1) for BEl-27 relay indicates that the maximum dropout (reset) accuracy is +2% of the pickup voltage, but manufacturer states that typical dropout accuracy of BE1-27 relay is within 0.1% of the pickup voltage (Attachment 9.5).
Therefore, it was assumed that the maximum dropout accuracy of the BE1 -27 relay is +0.5%
(0.525 V for 105 V voltage tap setting).
SCE 26-426 Rev. 3 I
Reference:
SO] 23-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. PaOe of CALCULATION SHEET CCN CONVERSION:
I CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4M-015 Sheet 16 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I .I 3.1.12 Negligible Effects and Values Uncertainties and effects which are determined to be less than 0.001% (one thousandth of one percent) will be considered negligible and eliminated from consideration.
3.1.13 Environmental Conditions of the 2(3)A04 and 2(3)A06 Cubicles 2(3)A04 and 2(3)A06 Cubicles are located in the Class 1E SWGR rooms, which are environmentally controlled with normal & emergency chillers. The relays are mounted inside of the cubicles and will be at a higher temperature than ambient room temperature, but it is reasonable to assume that the temperature excursions with the cubicle are similar to those in the room. Therefore, the difference between the highest and lowest temperatures experienced by the relays will be the same as the difference between the highest and lowest room temperatures.
3.2 Assumptions Requiring Verification 3.2.1 LOV relay (Basler BE1 -27) voltage tap drift (D)
Voltage tap setting drift allowance for the 127F1, 2, 3, & 4 (BE1-27) relays is assumed to be equal to the accuracy of the relay (+/- 0.5 V), since the manufacturer drift value is not available. This assumption will be verified by testing (reference section 2.2.5).
Note: The drift allowance was assumed to be +/- 0.5 V because the Basler e-mail, dated 3/14/06, states "The test report also illustrates that pickup accuracy is typically better than 0.3% ... " (Attachment 9.4).
3.2.2 LOV relay (Basler BE1 -27) time delay drift (D)
Time delay tap setting drift allowance for the 127F1, 2, 3, & 4 (BE1 -27) relays is assumed to be equal to the repeatability of the relay (+/- 50 ms, refer to section 4.2), since the manufacturer drift value is not available. This assumption will be verified by testing (reference section 2.2.5).
SCE26-426 Rev. 3 1
Reference:
SO0123-XXPV-7,15]
- ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 17 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR I DATEJ IRE DATE cc Joon kim Bili Lennartz a "J INTENTIONALLY LEFT BLANK 4-SCE 26-426 Rev. 3 I
Reference:
SOI23-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN I Project or ECP: SONGS 2 & 3 Calc No. E4-01 5 Sheet 18 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE--[ IRE - DATE REV ORIGIATO DAE IRE DATE cJ 0 Joan kim IBill Lennartz LI C11 4 DESIGN INPUTS 4.1 General The SONGS Units 2&3 Safety-Related 4 kV System consists of four 4 kV Buses. Buses 2A04 and 2A06 are the Unit 2 Train A and Train B Buses, respectively, while 3AQ4 and 3A06 are the corresponding buses for Unit 3.
Bus 2A04 contains 21 separate cubicles numbered from 2A0401 to 2A0421. Bus 2A06 contains 20 separate cubicles numbered from 2A0601 to 2A0620. Bus 3A04 contains 20 separate cubicles numbered from 3A0401 to 3A0420. Bus 3A06 contains 19 separate cubicles numbered from 3A0601 to 3A0619. The cubicles containing the LOV relays are given in the table below.
Location Function Bus 2A04 Bus 2A06 Bus 3A04 Bus 3A06 Cubicle 15 15 15 15 Undervoltage Relay ID 2A0415 2A0615 3A0415 3A0615 Numbers 127F1, 2,3,4 127F1,2,3,4 127F1,2,3,4 127F1, 2,3,4 4.2 BE1 -27 LOV relay (references 6.5.1 & 6.5.2 and Attachments 9.4, 9.5, & 9.6)
Device No: 127F1, 127F2, 127F3, and 127F4 MFR: Basler Model No: A3EC1JAOBOF Tap Range: 55-160 V Temperature range: -400C to +700C - operating
-65°C to +1000C - storage Burden (voltage sensing): less than 1 VA Power supply 125 V dc, 4.4 watts Pickup voltage accuracy: +/-2% or +/-0.5 volts of the pickup setting, whichever is greater.
Dropout voltage accuracy: +2% of the pickup Inverse time accuracy: Repeatability within +/-2% or 50 ms (whichever is greater) for any combination of time dial and pickup setting.
Note: The inverse time curves were generated with prefault voltages at 10% greater than pickup setting. For prefault voltages that are greater than 10% in difference from the pickup setting, the timing accuracy is +/-10% or 100 ms (whichever is greater).
Calibration interval: 5 years Reset time: 2 cycles (contact opening time on recovery of voltage)
I-SCE 26-426 Rcv. 3
Reference:
SO[ 23-XXIV-7.151 E4C-015
ICON NO./ I E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEETý CCN CONVERSION:
CON NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 19 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE II DATE REV ORIGINATOR I DATE I IRE DATE o-cc Joon kim Bill Lennartz I -
a:z 4.3 Environmental Condition Data FORM 4: ENVIRONMENTAL CONDITIONS DATA SHEET AREA: CB Area B5 (ESF SWGR room) Mild Environment (References 6.1.1 & 6.3.5)
Parameter Data [ Reference Normal Temperature 55'F 6.1.1 Minimum, OF Normal Temperature 81.7 0F 6.1.1 Maximum, OF Normal Radiation Val gammatRads<
Value, gamma Rads 1.0 E4 Rads 6.3.5 Normal Pressure 0 6.3.5 Minimum, psig 0_psig_6_3.5 Normal Pressure 0 psig 6.3.5 Maximum, psig Accident Temperature 95°F 6.3.5 Maximum, OF Accident Radiation AcietRdain< 1.0 E4 Rads 6.3.5 Value, gamma Rads Accident Relative Humidity Range % RH Accident Pressure 0 psig 6.3.5 Maximum, psig I 4.4 Fluke 45 multimeter (M&TE) used for Setpoint Measurement and Calibration (Attachment 9.1)
Full scale: 300 V AC Accuracy: +/-0.2% of reading + 10 digits Resolution: 0.01 V Note: Since the resolution at medium sampling rate on 300 V range is 10 mV, the reference accuracy is +/-(0.2% of reading + 1OxO.01V) = +/-(0.2% + 0.1 V)
Temperature coefficient: < 0.1 times the applicable accuracy specification per degree C for 00C to 18°C (32°F to 64.4°F) and 28°C to 500C (82.4 0F to 1220 F)
I-SCE 26-426 Rev. 3 I
Reference:
SO 123-XX IV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CON CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 20 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE a Joon kim Bill Lennartz Io 4.5 Wilmar SC-1 01 Timer (M&TE) used for Setpoint Measurement and Calibration (Attachment 9.2)
Manufacturer: Wilmar Type: SC-1 01 Input power: 120 V +/- 10%, 50/60 Hertz, 0.1 amp.
Operation Modes: Dry contact, NO or NC DC potential, OFF or ON AC potential, OFF or ON Temperature range: 00C to 500 C Range: Cycles 99999 Milliseconds 99999 Seconds 999.99 Accuracy (Notes): Dry contact - +/-1 millisecond DC voltage - +/-1 millisecond AC voltage - +/-1/4 cycle Notes (1) The "clock" and "read-out" tolerance listed below must be added in computing the overall accuracy:
- a. The internal clock tolerance, over a temperature range of -200C to + 500C, is +/-0.06%
- b. Above accuracies are +/-1 less significant digit.
(2) The AC voltage accuracy given is the worst case at low voltages and improves with high voltage.
4.6 Potential Transformer (PT) data (references 6.1.2, 6.4.1, & 6.5.3)
MFR: General Electric Model: JVM-3 PT ratio: 35:1 Ratio correction factor: 0.99856 Calculated random error: +/- 0.05%
Calculated bias: +0.012% / -0.029%
Note: Refer to calculation E4C-1 30 (reference 6.1.2) for the calculations of ratio correction factor (RCF), random error, &bias 4.7 Technical Specifications Allowable Values SR 3.3.7.3.b of the Technical Specification (Reference 6.3.2) gives the following Allowable Values:
Loss of Voltage Function _>3554 V and -<3796 V, Time delay: _>0.75 seconds and < 1.0 seconds at 0 V SCE 26-426 Rev. 3 I
Reference:
S01 23-XXIV-7.151 E4C-015
ICON NO.!
E&TS DEPARTMENT PRELIM. CON NO. Pant of CALCULATION SHEET CON CONVERSION:
I CON NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 21 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0Joan kimn Bill Lennartzf 4.8 Voltage requirements for motors (reference 6.3.6)
SONGS Units 2&3 QC II motors have been procured to operate at +/-10% rated voltage continuously and are able to withstand voltage drops as low as 75% of rated voltage for up to 15 seconds.
Item 4.16 kV motor 460 V motor Continuous 4160 V +/-+10% 460 V +/-10%
15 seconds 3120 V (75% of 4160 V) 345 V (75% of 460 V) 4.9 Time required for voltage recovery during load sequencing Calculation E4C-082 (reference 6.1.4) indicates the following; (1) If the preferred offsite power source supplies power to the Class 1 E 4.16 kV bus, the minimum voltage dip at the Class 1E 4.16 kV bus during load sequencing is higher than the LOV relay pickup voltage of 3675 V (105 V x 35).
(2) If the emergency diesel generator supplies power to the Class 1 E 4.16 kV bus, the minimum bus voltage dip at the Class 1 E4.16 kV bus during load sequencing is lower than 3675 V. Base calculation E4C-082 does not include data for the voltage recovery time during load sequencing.
However, CCN #62 to E4C-082, which was issued to support PCN 574 to change the diesel generator AVR setting from 4460 +/- 80 V to 4360 +/- 80 V, includes data for the bus voltage recovery time during load sequencing. CCN #62 to E4C-082 was performed for the worst Study Case II.1B1-OR1, using the new lower AVR setting of 4280 V (4360 V - 80 V). The longest bus voltage recovery time is shown in the following table:
Bus voltage (%) Sequence Time (sec.) Bus voltage (%)
Sequence Time (sec.) (See note below) 32.401 102.50 32.701 84.07 32.501 82.80 32.801 85.17 32.601 84.23 32.901 86.59 33.001 88.21 33.101 90.48 33.201 94.14 33.301 96.73 33.401 98.49 33.501 100.09 Note: Data for sequence time between 32.701 seconds to 33.501 seconds was obtained from the ETAP data base for CCN #62 to E4C-082. In order to add the bus voltage data to base calculation E4C-082, AR 010400749-39 was created (refer to section 2.2.6).
4-SCE 26-426 Rev. 3 (
Reference:
S0123-XXIV-7.151 E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN I Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 22 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV I ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I INTENTIONALLY LEFT BLANK a-SCE 26-426 Rev. 3 {
Reference:
ICON NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CcN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-011.5 Sheet 23 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz w<
- 5. METHODOLOGY
5.1 Overview
This methodology is consistent with the requirements of Category I setpoints specified in SONGS Standard JS-123-103C (Reference 6.3.7) for safety system setpoints. The loop of LOV circuit consists of only the potential transformer (primary element) and LOV relay. The only error attributed to the primary element is the Primary Element Allowance (PEA).
The adequacy of the existing nominal pickup setpoint (105 V) of the LOV relay will be evaluated, considering BE1 -27 relay TLU and the following requirements of the LOV relay scheme:
a) The time delay of the BE1 -27 relay should be selected such that the time delay of the entire LOVS channel up to and including the associated auxiliary relays is s 1.0 second as required by Tech. Spec. SR 3.3.7.3.b.
b) LOV scheme should not actuate on a voltage dip during load sequencing or the largest motor starting.
c) Since Class 1E motors (460 V and 4.16 kV) are capable of sustained satisfactory operation with a voltage dip to 75% of rated voltage for 15 seconds (reference 4.8), the LOV relay should operate within 15 seconds at 75% of the rated motor voltage.
d) The minimum operating voltage of LOV relay should be greater than the voltage at Class 1E 4.16 kV buses corresponding to 75% of the nominal switchyard voltage of 230 kV per INPO SOER 99-1.
5.2 Calculation of primary element (PT) allowance (PEA)
Since the same potential transformers are used for degraded grid voltage (DGV) relays and LOV relays, the calculated PT accuracy in calculation E4C-1 30 (reference 6.1.2) for DGV relays will be used in this calculation (reference sections 3.1.9 and 4.6).
The calculated PEA = PEA random + PEA bias 5.3 Calculation of LOV relay total loop uncertainty (TLU) 5.3.1 The following uncertainties are considered for inclusion per SONGS Standard JS-123-103C (Reference 6.3.7):
- a. PEA as outlined above (applicable only for pickup voltage tap setting).
- b. Device Tolerances (LOV Relay only)
- Drift allowance (D)
- Power supply allowance (PSe)
- Temperature allowance (Te - normal & accident)
- Seismic effects (Se)
SCE 26-426 Rev. 3 f
Reference:
SO123-XXIV-7.15]
ICCN NO..
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
ICON NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 24 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV I ORIGINATOR DATE IRE DATE c 0 Joon kim Bill Lennartzu o Len J4t
- Radiation effects (Re)
The following uncertainties will be considered for the M&TE tolerance:
- M&TE accuracy (MTEA)
" Readability (R)
Readability is +/- least significant digit for digital M&TE
- M&TE temperature effect (MTETE)
- M&TE reference standard (MTERs)
MTERS is +/-25% of M&TE accuracy per JS-123-103C (reference 6.3.7).
These uncertainties will be combined utilizing the Square Root of the Sum of the Squares Method.
- d. Setting Tolerance (ST)
Note: Used in TLU calculation in lieu of Accuracy per section 6.2 of JS-123-103C..
- e. Miscellaneous Allowance (Ma) 5.3.2 Combination of TLU Uncertainties The Square Root of the Sum of the Squares Method as defined in JS-123-103C (reference 6.3.7) is utilized to combine the independent random uncertainties in the determination of the TLU. Then, the applicable biases (PEAbias in this case) are added. Therefore:
For pickup voltage tap:
TLU =+VTe2 + D2 + PSe2 + Se2 + Re2+MTE2 + ST2 + Ma2 + PEA .. 2 + PEAbi.
For time delay tap:
2 2 2 TLU Te 2
+ D 2 + PSe' + Se2 + Re- +MTE +ST2 + Ma 5.4 Calculation of LOV relay allowable value tolerance (AVT)
The allowable value tolerance (AVT) will be calculated per JS-123-103C, Section 4.4 from the equation:
2 2 AVT = +/-(D + ST + R2)1 Where D is the drift of the LOV relay, ST is the setting tolerance of the LOV relay, and R is the readability of the test equipment.
SCE 26.426 Rev. 3 1
Reference:
SO123-XXIV-7.15]
ICCN NO.. I E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CON CONVERSION:
CCN NO- CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 25 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I 5,5 LOV relay (BE1 -27) pickup (PU) and dropout (DO) / reset setpoint.
5.5.1 LOV relay nominal pickup setpoint Adequacy of the nominal pickup setpoint (105 V) of the existing LOV relay (CV-2) will be evaluated, considering the TLU and the requirements of the LOV relay scheme described in section 5.1 5.5.2 LOV relay dropout (reset) voltage No calculation for dropout (reset) voltage of BE1 -27 relay is required because factory set dropout (reset) voltage is always higher than (up to 100.5%) the pickup voltage (reference section 3.1.11 and Attachment 9.5).
5,6 Calculation of LOV relay PU As-Found/As-Left Acceptance Bands 5.6.1 Calculation of LOV relay As-Found acceptance band The As-Found pickup acceptance band:
(Nominal pickup setpoint) x (1 +/- Allowable value tolerance).
The As-Found dropout acceptance band:
(As-Found values) x 1.005.
5.6.2 Calculation of LOV relay As-Left acceptance band The As-Left acceptance band will be the pickup setpoint +/-ST (setting tolerance) 9-SCE 26-426 Rev. 3 (
Reference:
SO123-XXIV-7.15]
ICON NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
CON NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 26 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz t*
INTENTIONALLY LEFT BLANK SCE 26-426 Rev. 3 {Rcference: SO 123-XXIV-7.151 a-E4C-015
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of LALCULATION Hl -ET.- CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 27 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE I ,RE DATE T o Joon kim Bill Lennartz I z I0
- 6. REFERENCES 6.1 SONGS Calculations 6.1.1 M-0073-061 CCN 14 - Aux. BLDG control Area - 50' ESF SWGR Room Heat Local CS Spec.S023-410-6 6.1.2 E4C-1 30 - TLU Calc for Undervoltage Relay Circuits at Class 1E 4 KV Switchgear 6.1.3 E4C-090 - Auxiliary System Voltage Regulation 6.1.4 E4C-082 - System Dynamic Voltages During DBA 6.1.5 J-ZZZ-069 - Out-Of-Tolerance Notification Program (OTN) 6.2 Industry Publication and Standards 6.2.1 NRC Regulatory Guide 1.105 Revision 3 Setpoints For Safety-Related Instrumentation 6.2.2 ANSI/IEEE C57.13-1993 - IEEE Standard Requirement for Instrument Transformers.
6.3 SONGS Documents and Procedures 6.3.1 NCDBMEL - Nuclear Consolidated Database Master Equipment List.
6.3.2 SONGS 2 &3 Technical Specifications (See TS Section 3.3.7.3) 6.3.3 SONGS 2 &3 UFSAR (Section 8.3.1.1.3.13) 6.3.4 DBD-S023-120 - 6.9 KV, 4.16 KV & 480 V Electrical Systems.
6.3.5 DBD-S023-TR-EQ - Environmental Qualification Topical Report 6.3.6 System Specification S023-403 Diesel Driven Electrical Generating sets.
6.3.7 SCE Standard JS-1 23-103C - Instrument Setpoint/Loop Accuracy Calculation Methodology 6.3.8 Surveillance Test Procedures for Loss of Voltage (LOVS), Degraded Voltage (SDVS, DGVSS) and Sequencing Relays and Circuits S02(3)-II -11.1A Surveillance .Requirement Unit 2 (3) ESF Train A S02(3)-II -11.1 B Surveillance .Requirement Unit 2 (3) ESF Train B 6.3.9 S023-3-3.23.1 - Diesel Generator refueling Interval tests.
6.3.10 INPO SOER 99 Loss of Grid SCE 26-426 Rev. 3 {
Reference:
SO 123-XXIV-7,15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of CALCULATION SHEET CON CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 28 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR I DATE IRE DATE 1 Joon kim Bill Lennartz U I . I+
6.4 Drawings.
6.4.1 Elementary Drawings Unit 2 Unit 3 Train DWG No. DWG No.
A 30192 4.16 kV bus 2A04 metering 32192 4.16 kV bus 3A04 metering (3 of 3) (3 of 3)
A 30220 sh 1 4.16 kV bus 2A04 metering 32220 sh 1 4.16 kV bus 3A04 metering A 30220 sh 2 4.16 kV 2AO4 degraded 32220 sh 2 4.16 kV 3AO4 degraded voltage detection voltage detection A 30299 4.16 kV bus 2A04 metering 32299 4.16 kV bus 3A04 metering (2 of 3) (2 of 3)
B 30230 sh 1 4.16 kV bus 2A06 metering 32230 sh 1 4.16 kV bus 3A06 metering B 30230 sh 2 4.16 kV 2A06 degraded 32230 sh 2 4.16 kV 3A06 degraded voltage detection voltage detection B 30300 4.16 kV bus 2A06 metering 32300 4.16 kV bus 3A06 metering (2 of 3) (2 of 3)
B 30301 4.16 kV bus 2A06 metering 32301 4.16 kV bus 3A06 metering (3 of 3) (3 of 3) 6.5 Vendor documents 6.5.1 V/P 1814-AF316-M0005 - Instruction Manual for undervoltage relay BE1-27 6.5.2 V/P 1814-AF316-M0007 - Basler Relay Application for Relay BE1-27/59 6.5.3 V/P S023-302 85 - B/M for Class 1E 4.16 kV SWGR 2A06 SCE 26-426 Rev. 3 i
Reference:
S0123-XXIV-7.151 E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paoa of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 29 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE c 0
0 Joon kim Bill Lennartz I
- 7. NOMENCLATURE AR Action Request ABB Asea Brown Boveri CCN Calculation Change Notice D Drift DAQ Data Acquisition System Dead Band Voltage difference between the dropout (reset) and pickup DGV Degraded Grid Voltage DGVSS Degraded Grid Voltage Signal with SIAS DO Dropout EC Editorial Correction EDG Emergency Diesel Generator ESF Engineered Safety Feature kV Kilovolt LOV Loss of Voltage LOVS Loss of Voltage Signal LSB Least Significant Bit Ma Miscellaneous Allowance MFR Manufacturer M&TE Measuringe & Test Equipment ms Milliseconds N/A Not Available or Not Applicable NSP Nominal Setpoint (SP)
NRC Nuclear Regulatory Commission 4-SCE 26-426 Rev. 3 J
Reference:
SO123-XXIV-7.15)
E&TS DEPARTMENT PRELIM. CCN NO.
CALCULATION SHEET Project or ECP: SONGS 2 & 3 Calc No. E40-015 Sheet 30 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE c 0B o Joon kim Bill Lennartz PEA Primary Element Allowance PSe Power Supply Allowance PT Potential TransformerNoltage Transformer PU Pickup R Readability RAT Reserve Auxiliary Transformer Re Radiation Effects Se Seismic Effects SIAS Safety Injection Actuation Signal SP Setpoint SRSS Square Root Sum of the Squares ST Setting Tolerance SWGR Switchgear SWYD Switchyard TCN Technical Change Notice Te Temperature allowance Tol. Tolerance TLU Total Loop Uncertainty TS Technical Specifications UFSAR Updated Final Safety Analysis Report SCE 26-426 Rev. 3 I
Reference:
ICON NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of I;ALUULA IIUN 1M.. I CCN CONVERSION:
CCN NO. CCNI Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 31 - of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0on im BilLnat 0 I l
8 CALCULATIONS 8.1 Calculation total loop uncertainty (TLU) of LOV relay voltage tap 8.1.1 Individual Uncertainties associated with LOV relay voltage tap TLU 8.1.1.1 Primary Element Allowance (PEA) (reference sections 3.1.9 & 4.6)
PEArandom = +/-0.05% (SRSS)
PEAbiaS = +0.012 % / - 0.029% (Bias) 8.1.1.2 Relay tolerances 8.1.1.2.1 Drift allowance (D)
Per section 3.2.1 (assumption) the drift allowance for the LOV relay is:
D = +/-0.5 V D = +/- (0.5 V / 105 V) x 100% = +/-0.476% for the pickup setting of 105 V 8.1.1.2.2 Power supply allowance (PSe)
Per Assumption 3.1.7 the power supply effect is included in the relay accuracy. Therefore, PSe = 0 8.1.1.2.3 Temperature allowance (Te) (normal & accident)
Per Assumption 3.1.2 the temperature effect is included in the relay accuracy. Therefore, Te = 0 8.1.1.2.4 Seismic effect (Se)
Per Assumption 3.1.6 Seismic effect is negligible.
Therefore, Se = 0 8.1.1.2.5 Radiation effect (Re)
Per Assumption 3.1.5 the Radiation effect is negligible.
Therefore, Re = 0 SCE 26-426 Rcv- 3 {
Reference:
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of UALUULA[IUN 51H":I CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 32 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 doon kim Bill Lennartz LJ rrS.Ž 8.1.1.3 M&TE Tolerance (MTE)
(reference sections 3.1.2, 3.1.8, 4.3, 4.4 & 5.3 and Attachment 9.1) 8.1.1.3.1 M&TE accuracy (MTEA)
Fluke 45 multimeter random accuracy is + 0.2% of reading + 10 digits.
Since the resolution at medium sampling rate on the 300 V range is 10 mV (Attachmment 9.1), the reference accuracy is +/-(0.2% +lOx0.01V) = +/-(0.2% +
0.1V).
If the device read near 105 V, (0.1 V/ 105 V) x 100 = 0.095%.
MTEA = +/-(O.2% + 0.095%) +/-0.295%.
8.1.1.3.2 Readability (R) (least significant digit for digital M&TE)
The resolution at medium sampling rate on the 300 V range is 10 mV.
If the relay is set near 105 V, R = +/-(10 mV / 105 V) x 100 = +/-0.0095%.
8.1.1.3.3 M&TE temperature effect (MTETe)
Per section 4.4 the temperature coefficient of Fluke 45 voltmeter is less than 0.1 times the applicable accuracy of +/-0.295% per degree C for 00 C to 180C (32 0 F to 64.4 0 F) and 28°C to 500C (82.4 0 F to 1220 F). The temperature range at SWGR room is 550 F to 81.7 0F.
Temperature range to be considered:
55 0F (12.780C) to 64.4 0 F (18.00°C).
MTETC = (0.1/degree C) x (18-12.78)°C x +/-0.295% = _-0.154%
8.1.1.3.4 M&TE reference standards (MTERS)
The reference standard accuracy is assumed to be 25% of the M&TE accuracy per JS-123-103C (Reference 6.3.7). Therefore:
MTERS = 0.25 x (+/- 0.295) = +/-0.074 %
SCE 26-426 Rev. 3 I
Reference:
SO123-XXIV-7.151 E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paoe of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 33 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE C 0 Joon kim Bill Lennartz a:
I H 8.1.1.3.5 Total M&TE tolerance The total M&TE allowance is the SRSS of the four components determined above. That is:
2 2 MTE + (MTEA2+ R' + MTETe + MTERs )1/2 MTE = + (0.2952 + 0.00952 +0.1542+ 0.0742)1/2 MTE 0.341%
8.1.1.4 Setting tolerance (ST)
Per assumption 3.1.1 the setting tolerance is +/-0.5 Vac, therefore:
ST = (+/-0.5 V / 105 V) x 100 = +/-0.476%
8.1.1.5 Miscellaneous allowance (Ma)
Per Assumption 3.1.10 the miscellaneous allowance is:
Ma = +0.5 %
4-SCE 26-426 Rev. 3 l
Reference:
S0123-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CON CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 34 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I 8.1.2 Combination of uncertainties Combining the uncertainties per the equation from Section 5.3.2, the TLU is:
TLU=+ e2+D2 +PSe2+Se2+Re2+MTE2+ST2+Ma2+PEA. 2 +PEA "PEAbias = -0.029%
+PEAbias = +0.012 %
PEAr.rdom = +/-0.05%
Te = N/A D = +/-0.476%
PSe = N/A Se = N/A Re = N/A MTE = +/-0.341%
ST = +/-0.476%
Ma = +/-0.5%
+TLU = +( 0 +0.476 +02 + 02 + 02 + 0.3412 + 0.4762 + 0.52 + 0.052) + 0.012 % = +0.918%
- TLU = -( 02 + 0.4762 + 02 + 02 + 02 + 0.3412 + 0.4762 + 0.51 + 0.05 2 )1 - 0.029% = -0.935%
TLU = +0.918% / - 0.935%
8.1.3 Allowable value tolerance (AVT) of LOV relay (BE1 -27)
(reference section 5.4) 2 2 2 2 AVT =*( D + ST +R )11 ST = Setting tolerance: +/-0.476%.
D = Drift: +/-0.476%
R = Readability of M&TE: +/-0.0095%
Therefore, the tolerance for allowable value is:
AVT = +/-(0.4762 + 0.4762 + 0.00952)1/2% = +/-0.673%
6~
SCE 26-426 Rev. 3 1
Reference:
E&TS DEPARTMENT ICCN NO.!
NOJCCN NO.
PRELIM. Pane of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 &3 Calc No. E4C-01 5 Sheet 35 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz cr 8.1.4 As-found (allowable) values of LOV relay (reference sect.s 3.1.11, 4.6, 5.1, 5.5, 5.6,and 8.1.3)
Relay pickup setpoint: 105 V Allowable value tolerance: +/- 0.673%
Max. dropout accuracy: + 0.52 V (Since the resolution of M&TE (Fluke 45) is 0.01 V, the max. dead band of 0.52 V was applied to As-Found values for conservatism.)
PT ratio: 35 PT correction factor: 0.99856 Pickup voltage:
Max. allowable voltage at relay = 105 V x (1 + 0.00673) = 105.71 V Max. allowable voltage at bus = 105.71 V x 35 x 0.99856 = 3694.52 V Nominal allowable voltage at relay = 105 V Nominal allowable voltage at bus = 105 V x 35 x 0.99856 = 3669.71 V Min. allowable voltage at relay = 105 V x (1- 0.00673) = 104.29 V Min. allowable voltage at bus = 104.29 V x 35 x 0.99856 = 3644.89 V Dropout (reset) voltage:
Max. allowable voltage at relay = 105.71 V + 0.52 V = 106.23 V Nominal allowable voltage at relay = 105 V + 0.52 V = 105.52 V Min. allowable voltage at relay = 104.29V + 0.52 V = 104.81 V 8.1.5 As-left values of BE1 -27 relay (reference sections 3.1.11, 5.5, and 5.6)
Relay pickup setpoint: 105 V Setting tolerance: +/-0.5 Max. dropout accuracy: + 0.52 V (Since the resolution of M&TE (Fluke 45) is 0.01 V, the max. dead band of 0.52 V was applied to As-Left values for conservatism.)
Pickup voltage:
Max. allowable voltage at relay =105V + 0.5 V =105.5 V Nominal allowable voltage at relay = 105 V Min. allowable voltage at relay =105V -0.5V=104.5V Dropout (reset) voltage:
Max. allowable voltage at relay = 105.5 V + 0.52 V = 106.02 V Nominal allowable voltage at relay = 105 V + 0.52 V = 105.52 V Min. allowable voltage at relay = 104.5V + 0.52 V = 105.02 V SCE 26-426 Rev. 3 1
Reference:
SOl 23-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Panpe of ALk.ULATIUN 5Hhh] CON CONVERSION:
CON NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 36 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz [
8.1.6 Operating voltage range of BEl-27 relay (reference sect.s 3.1.11, 4.6, 5.1, 5.3, & 8.1.2)
Relay pickup setpoint: 105 V TLU of BEl-27 relay pickup: + 0.918%! - 0.935%
Max. dropout accuracy: + 0.525 V PT ratio: 35 PT correction factor: 0.99856 Pickup voltage:
Max. voltage at relay = 105 V x (1 + 0.00918) = 105.96 V Max. voltage at bus = 105.96 V x 35 x 0.99856 = 3703.26 V Nominal voltage at relay = 105 V Nominal voltage at bus = 105 V x 35 x 0.99856 3669.71 V Min. voltage at relay = 105 V x (1- 0.00935) = 104.02 V Min. voltage at bus = 104.02 V x 35 x 0.99856 = 3635.46 V Dropout (reset) voltage Max. voltage at relay = 105.96 V + 0.525 V = 106.485 V Max. voltage at bus = 106.485 V x 35 x 0.99856 = 3721.61 V Nominal voltage at relay = 105 V + 0.525 V = 105.525 V Nominal voltage at bus = 105.525 V x 35 x 0.99856 = 3688.06 V Min. voltage at relay = 104.02 + 0.525 V = 104.545 V Min. voltage at bus = 104.545 V x 35 x 0.99856 = 3653.81 V When the switchyard voltage is degraded to 75% of 230 KV, voltage at Class 1E 4.16 KV bus could be approximately:
(0.75 x 230000 V) / (RAT turns ratio) = (172500 V) / (230 x .975) / 4.36 = 3353.8 V The 3353.8 V at Class 1E 4.16 kV buses is less than the minimum dropout voltage (3635.46 V) of the LOV relay (BE1-27) and the LOV relay would trip the Class 1E 4.16 KV bus during switchyard voltage degradation. Therefore, the nominal pickup setting of 105 V is acceptable.
SCE 26-426 Rev. 3 {
Reference:
S01 23-XXI'/-7.15]
ICCN NO./J E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
I CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 37 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear j
REV 0
ORIGINATOR Joon kim DATE IRE Bill Lennartz DATE I REV ORIGINATOR DATE IRE DATE AE 8.2 TLU of LOV relay time delay tap 8.2.1 Individual Uncertainties associated with LOV relay time delay tap TLU 8.2.1.1 Relay tolerances 8.2.1.1.1 Drift allowance (D)
Per section 3.2.2 the drift allowance for the LOV relay time delay is:
D =t +/-50 ms If the timer measures approximately 0.77 second, then 0.05 second is equivalent to 6.50%. Therefore, D = + 6.5%
8.2.1.1.2 Power supply allowance (PSe)
Per Assumption 3.1.7 the power supply effect is included in the relay accuracy. Therefore, PSe = 0 8.2.1.1.3 Temperature allowance (Te) (normal & accident)
Per Assumption 3.1.2 the temperature effect is included in the relay accuracy. Therefore, Te = 0 8.2.1.1.4 Seismic effect (Se)
Per Assumption 3.1.6 Seismic effect is negligible.
Therefore, Se = 0 8.2.1.1.5 Radiation effect (Re)
Per Assumption 3.1.5 the Radiation effect is negligible.
Therefore, Re = 0 SCE 26-426 Rev. 3 1
Reference:
SO I 23-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 38 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE ,
0 Joon kimn Bill Lennartz I 8.2.
MTE .2 &TE olernce 8.2.1.2 M&TE Tolerance (MTE)
(reference sections 4.3, 4.5, 5.3 and Attachment 9.2) 8.2.1.2.1 M&TE accuracy (MTEA)
Wilmar timer SC-1 01 random accuracy is +/- 1 millisecond.
If the timer measures approximately 1 second, then 0.001 second is equivalent to 0.1%. Therefore, MTEA = + 0.1%
8.2.1.2.2 Readability (R) (least significant digit for digital M&TE)
Since the least significant digit is 0.001 second for millisecond range, if the timer measures approximately 1 second, then 0.001 second is equivalent to 0.1%. Therefore, R =+/-0.1%
8.2.1.2.3 M&TE temperature effect (MTETO)
The internal clock tolerance, over a temperature range of -20°C to + 500C, is
+/-0.06% and the temperature range at SWGR room is 55 0 F (12.78°C) to 81.7°F (27.61 °C).
Therefore, MTETe = +/- 0.06%
8.2.1.2.4 M&TE reference standards (MTERs)
The reference standard accuracy is assumed to be 25% of the M&TE accuracy per JS-1 23-103C (Reference 6.3.7). Therefore:
MTERS = 0.25 x (+/- 0.1 %) = +/-0.025 %
8.2.1.2.5 Total M&TE tolerance The total M&TE allowance is the SRSS of the four components determined above. That is:
2 11 MTE = + (MTEA2+ R2 + MTETG2 + MTERS ) /2 MTE +(0.12 + 0.12 + 0.06' + 0.0252)12 MTE =+0.1556%
SCE 26-426 Rev. 3 (
Reference:
S0123-XXIV-7.15]
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of UALUULATIUN 5H Ih. CCN CONVERSION:'
CCN NO. CON Project or ECP: SONGS 2 & 3 Calc No. E4-015 Sheet 39 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz C.;-
m 8.2.1.3 Setting tolerance (ST)
Per assumption 3.1.1.2 the setting tolerance is +/- 50ms, therefore:
If the timer measures approximately 0.77 sec., then t 50 ms is equivalent to t 6.5%.
8.2.1.4 Miscellaneous allowance (Ma)
Per Assumption 3.1.10 the miscellaneous allowance is:
Ma = +/-0.5 %
8.2.2 Combination of uncertainties Combining the uncertainties per the equation from Section 5.3.2, the TLU is:
2 2 2 2 2
Te2 + D 2 + PSe + Se + Re 2 + MTE +ST +Ma TLU =
Te = N/A D = +/- 6.5%
PSe = N/A Se = N/A Re = N/A MTE = +/-0.1556%
ST = +/- 6.5%
Ma = +/-0.5%
TLU=+(0 2 +6.5 2+02+02+02 +0.156 2+6.5 2+0.52)1% =+/-9.21%
TLU +/-+9.21%
8.2.3 Allowable value tolerance (AVT) of time delay for LOV relay (BE1 -27)
(reference section 5.4) 2 AVT = ( D2+ ST2 +R )112 ST = Setting tolerance: + 6.5%.
D = Drift: +/- 6.5%
R = Readability of M&TE: +/- 0.1%
Therefore, the tolerance for allowable value is:
AVT = +(6.52 +6.52+ 0.12)112% 9.19%
SCE 26-426 Rev. 3 l
Reference:
S0123-XXIV-7.15]
ICCN NO./ I E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
ICCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E40-015 Sheet 40 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE I REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz I_ ILLz 8.2.4 Nominal operating time of LOV relay (BE1-27)
The LOV relay scheme should meet the following requirements (reference section 5.1):
a) The time delay of the entire LOVS channel up to and including the associated auxiliary relays should be 5 1.0 second Since the TLU of the LOV relay is +/- 9.21% (reference section 8.2.2), the time delay of the entire LOVS channel should be X (1 + 0.0921) second + 10 cycles _<1.0 second Where X is nominal operating time of BE1 -27 relay on loss of voltage.
10 cycles is auxiliary relays (2 - HFA relays) operating time since the LOV channel includes two HFA relays (reference section 6.4.1 and Attachment 9.3) 1.0921X seconds + 0.167 seconds _<1.0 second 1.0921 X !5 0.833 seconds X :_0.76275 seconds Select the nominal operating time of BE1-27 relay = 0.76 second Operating time range of BE1 -27 relay will be 0.76 (1-0.0921) seconds _* X _<0.76 (1 + 0.0921) seconds 0.69 seconds < X < 0.83 seconds b) LOV scheme should not actuate on a voltage dip during load sequencing or largest motor starting (refer to section 4.9)
If the preferred offsite power source supplies power to the Class 1 E 4.16 kV bus, the minimum voltage dip at the Class 1 E 4.16 kV bus during load sequencing is higher than the LOV relay pickup voltage of 3675 V (105 V x 35).
If the emergency diesel generator supplies power to the Class 1 E 4.16 kV bus, the minimum bus voltage dip at the Class 1 E 4.16 kV bus during load sequencing is lower than 3675 V. Base calculation E4C-082 does not include data for the voltage recovery time during load sequencing However, CCN #62 to E4C-082, which was issued to support PCN 574 to change the diesel generator AVR setting from 4460 +/- 80 V to 4360 +/- 80 V, includes data for the bus voltage recovery time during load sequencing.
CCN #62 to E4C-082 indicates that Class 1E 4.16 kV bus voltage decreases during load sequencing, which is more severe than the largest motor starting because multiple motors start during load sequencing, below the minimum relay pickup voltage of 3635.46 V (refer SCE 26-426 Rev. 3 I
Reference:
SO 123-XXIV-7.15]
ICCN NO.! I E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET Project or ECP: SONGS 2 & 3 C OU TONI CNoNO.CC Calc No.
~CCN E40-015 CONVERSION:
Sheet 41_ of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear IRV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE ATE Joon kim I I Bill Lennartz IA 0 oo ki a: 2 to section 8.1.6). But the bus voltage recovers above the maximum relay reset voltage of 3721.61 V (refer to section 8.1.6) within 0.6 seconds.
The minimum operating time of the LOVS relay scheme will be approximately 0.85 second, considering the two auxiliary relay connected in series. Therefore, the LOV relay scheme not spuriously trip during the starting of the largest motor..
c) Since Class 1E motors (460 V and 4.16 kV) are capable of sustained satisfactory operation with a voltage dip to 75% of rated voltage for 15 seconds, the LOV relay scheme should operate within 15 seconds at 75% of the rated motor voltage (section 4.8).
4.16 kV motor In order to protect the 4.16 kV motors during a short time voltage dip, the BE1-27 relay should operate within 15 seconds at 75% of rated motor voltage.
The voltage at the BE1 -27 relay corresponding to 75% of rated motor voltage:
Vreiay = (0.75 x rated motor voltage) / PT ratio = (0.75 x 4160 V) / 35 x 0.99856 = 89.3 V The voltage drop between 4.16 KV bus and a motor is considered negligible.
Considering relay voltage tap tolerance of +0.918% / - 0.935% (refer to sect. 8.1.2):
Vrelay min- = 89.3 V x (1 - 0.00935) = 88.46 V Vrelayrmax = 89.3 V x (1+ 0.00918) = 90.12 V The voltage differences from the voltage tap setting (105 V) are 16.54 V (105 V - 88.46 V) to 14.88 V (105 V - 90.12 V), respectively. The BE1 -27 relay with a nominal time delay of 0.76 seconds will operate within 3 seconds at the voltage differences from the voltage tap setting (refer to Attachment 9.6).
460 V motor In order to protect the 460 V motors during a short time voltage dip, the BE1 -27 relay should operate within 15 seconds at a voltage corresponding to 75% of the rated motor voltage.
The voltage at the relay corresponding to 75% of rated motor voltage (460 V):
Vreiay = [0.75 x 460 V x 1.03 x (4160/480)] / (35 x 0.99856) = 88.12 V
- A voltage drop of 3% in the motor feeder cable and transformer was considered.
Considering relay voltage tap tolerance of + 0.918% / - 0.935% (refer to sect. 8.1.2):
SCE 26-426 Rev. 3 (
Reference:
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
I CONNO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 42 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kimr Bill Lennartz Vreiay in = 88.12 V X (1- 0.00935) = 87.30 V Vretay max. = 88.12 V x (1+ 0.00918) 88.93 V The voltage differences from the voltage tap setting (105 V) are 17.7 V (105 V - 87.3 V) and 16.07 V (105 V - 88.93 V), respectively. The BE1 -27 relay (with 105 V tap and a nominal time delay of 0.76 seconds) will operate within 3 seconds at the voltage differences from the voltage tap setting (refer to Attachment 9.6).
Therefore, the LOV relay settings of voltage tap of 105 V and time delay of 0.76 second are adequate.
8.2.5 Allowable value (as-found) of time delay for LOV relay BE1-27 only Nominal time delay setting: 0.76 second Allowable value tolerance: +/- 9.19% (refer to section 8.2.3)
Therefore, 0.76 x (1 - 0.0919) second - Allowable value -<0.76 (1 + 0.0919) second 0.69 second - Allowable time delay value !50.83 second 8.2.6 Allowable value (as-found) of time delay for LOVS channel The LOVS channel consists of a LOV relay (127F1) and auxiliary relays 127F1-X3 and 127F1-X1/127F1-X2 connected in series. The time delay of the entire LOVS channel up to and including the auxiliary relays is s 1.0 second. This timing requirement also applies to the LOVS channels associated with relays 127F2, 127F3, and 127F4.
Background section for Tech Spec. 3.3.7 states "Acomplete loss of offsite power will result in approximately a 1 second delay in LOV actuation.
Base for Tech. Spec. SR 3.3.7.3.b also states "SR 3.3.7.3.b is the performance of a CHANNEL CALIBRATION every 24 months."
Since the min. operating time of the auxiliary relay is not available, it was conservatively determined that the time delay of LOVS channel is 0.69 seconds a time delay 5 1.0 seconds, considering the operating time (10 cycles) of the two auxiliary relays (refer to Attachment 9.3).
This time delay limits will be used for Tech. Spec. SR 3.3.7.3.b.
8.2.7 As-left values with a prefault voltage of 115.5 V Nominal time delay setting: 0.76 second Setting tolerance: +/- 50 ms (refer to section 3.1.1.2)
Upper limit: 0.76sec. + 0.05 second = 0.81 second Lower limit: 0.76 sec. - 0.05 second = 0.71 second SCE 26-426 Rev. 3 1
Reference:
SO] 23-XXIV-7.15]
ICCN NO.!
E&TS DEPARTMENT PRELIM. CCN NO. Panp of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 43 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE I DATE REV ORIGINATOR DATE IRE DATE Joon kim 0 Bill Lennartz 0 onkmL INTENTIONALLY LEFT BLANK I-.-
SCE 26-426 Rev. 3 {
Reference:
SO123-XXIV'-7.151 E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paop of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet 44 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchcear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE Joan kim Bill Lennartz a Cro INTENTIONALLY LEFT BLANK
.9-SCE 26-426 Rev. 3 I
Reference:
E&TS DEPARTMENT ICCN NO.! I PRELIM. CCN NO. Paoe of CALCULATION SHEET Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Ii CCN CONVERSION:
CCN NO. CCN I
Sheet 45 of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear REV ORIGINATOR DATE IRE j DATE REV ORIGINATOR DATE IRE DATE a Joan kim Bill Lennartz 0 i Bla I I j -~ -
9 ATTACHMENTS 9.1 Specification for Fluke 45 Multimeter 9.2 Wilmar Timer SC-1 01 Specification 9.3 Operating time of G.E. relay Type HFA 9.4 E-mail from John Horak of Basler, dated 3/14/2006, for setting tolerance and calibration interval of BE1-27 relay.
9.5 E-mail from John Horak of Basler, dated 3/30/2006, for dropout (reset) accuracy of BE1 -27 relay 9.6 Figure 3-2 of Instruction Manual for Basler relay BE1 Inverse Timing Characteristic Curve 4.-
SCE 26-426 Rev. 3 {
Reference:
S0123-XXIV-7.15]
ATTACHMENT 9.1 Sheet 4b Calculation E4C-0 15, rev. 0 Appendix A Specifications INTRODUCTION Appendix A contains the specifications of the Fluke 45 Dual Display Multimeter.
These specifications assume:
- A I-year calibration cycle
- An operating temperature of 18 to 28'C (64.4 to 82.40F)
- Relative humidity not exceeding 90% (non-condensing) (70% for 1,000 kfl range and above)
Accuracy is expressed as +/-(percentage of reading + digits).
A-E4C-015
SPECIFICATIONS - TRUE RMS AC VOLTAGE ATTACHMENT 9.1 Calculation E4C-015, rev. 0 Sheet (+ 7 TRUE RMS AC VOLTAGE, AC-COUPLED Resolution Range Slow Medium Fast 300 mV - 10/V 100 #V 3V -- 100/.V 1 mV 30V - 1 mV 10 mv 300V - 10 mV 100 mV 750V -- 1lO mV 1V lO0 l pV -
1000 mV 0YpV -
1OV 100 V -
750V 10 mV -
Accuracy eUnear Accuracy d8 Accuracy Max Input at Frequency Slow Medium Fast Slow/Med Fast Upper Freq 20-50 Hz 1%* 100 1%+10 7%+2 0.15 0.72 2%+ 10 750V 50 Hz -10 kHz 0.2%+100 0.2%+10 0.5%+2 0.08 0.17 0.4%+10 750 V 10-20 kHz 0.5%+100 0.5% + 10 0.5%+2 0.11 0.17 1%+10 750 V 20-50 kHz 2%+200 2%+20 2%+3 0.29 0.34 4%+20 400 V 50-100 kHz 5%+500 5%+50 5%+6 0.70 0.78 10D%/+50 200V Error in power mode will not exceed twice the linear accuracy specification Accuracy specifications apply within the following limits, based on reading rate:
Slow Reading Rate: Between 15,000 and 99,999 counts (full range)
Medium Reading Rate: Between 1,500 and 30,000 counts (full range)
Fast Reading Rate: Between 150 and 3,000 counts (full range)
Decibel Resolution Resolution Slow & Medium Fast 0.01 dB 0.1 dB A-4 E4C-015
SPECIFICATIONS - ENVIRONMENTAL/GENERAL ATTACHMENT 9. 1 Sheet 5 Calculation E4C-015, rev. 0 -
ENVIRONMENTAL Warmup time 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to rated specifications for warmup < 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, add 0.005% to all accuracy specifications.
Temperature Coefficient <0.1 times the applicable accuracy specification per degree C for 00 C to 181C and 28 0C to 50 0 C (32 to 64.40F and 82.4 to 122"F)
Operating Temperature DOC to 500C (32 to 122 0 F)
Storage Temperature -40 0 C to + 70 0 C (-40 to 158 0F)
Elevated temperature storage of battery will accelerate battery self-discharge.
Maximum storage time before battery must be recharged:
20 - 250C 1000 days 50 0C 180 days 700C 40 days Relative Humidity To 90% at 00 C to 28 0C (32-82.40 F),
(non-condensing) To 80% at 28 0 C to 350C (82.4-950F),
To 70% at 35 0 C to 500 C (95-1220 F) except to 70% at 00C to 500 C (32-1220 F) for the 1000 kD, 3 MO, 10 MC, 30 MO, 100 M0, and 300 MO ranges.
Operating 0 to 10,000 feet Altitude Non-operating 0 to 40,000 feet Vibration 3 G @ 55 Hz Shock Half sine 40 G. Per Mil-T- 28800D, Class 3, Style E.
Bench Handling. Per Mii-T-28800D, Class 3.
GENERAL Common Mode Voltage 1000V dc or peak ac maximum from any input to earth Size 9.3 cm high, 21.6 cm wide, 28.6 cm deep (3.67 in high, 8.5 in wide, 11.27 in deep)
Weight Net, 2.4 kg (5.2 Ibs) without battery; 3.2 kg (7.0 Ibs) with battery; Shipping, 4.0 kg (8.7 ibs) without battery;,
4.8 (10.5 ibs) with battery Power 90 to 264V ac (no switching required), 50 and 60 Hz < 15 VA maximum Standards Complies with: IEC 348, UL1244, CSA Bulletin 566B EMC: Part 15 subpart J of FCC Rules, and VDE 0871.
RS-232-C Baud rates: 300, 600,1200, 2400, 4800 and 9600 Odd, even or no parity One stop bit A-11 E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of CALCULATION SHEET CCN CONVERSION:
CCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C1-015
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1E 4.16 kV Switchgear Sheet -.A*- of REV ORIGINATOR DATE IRE DATE I REV ORIGINATOR I DATE IRE DATE cr I I 0 0 Joon kim Bill Lennartz Joon im IDATE ATTACHMENT 9. Q..
PIM-O3-197 99:e2 WILPIO E..CTRICS INC A @30. . . L . F.61 BULLETIN SC-101 QENERAL DESCRIMTtON The Model SC-1I1 Solid Stalat Digebl Timer is a PrIchaon ingtrunIent 1o0reW carding e~aed timetin unlt of tyuiw, ml~s d slae ls.
It es developed prImarily to mccv-rarely iresure and cal*avte various switching OlWICAS "Ch at 01o1tctiva MI-clcult breakers. and contactors.
laYs.
SPECIFICATIONS i INPUT PE 120volts*1 10%,S 0!601KO.I Mp. LOCK: (1) Position OFF-Allowstimingtto TEMP. RANCL. Oto5'C. : 40m Ifc emn me nyMts mnode and be' RANIZE: (1) illes 0.99999 itOPPeC when the Start mode is
't111 (2) Seconds 0-99g reversed.
(2) Posklon ON -- Allows timing to (3) 0-*9"."
START&STOP commence from any etert moe and beo MOOD.S (1) Dry comacu. 4 NO or NC i01g; only bytt sto input.
(2) *C potentla OFF or ON POWIER: OFF .ON ewttch Supplies 120VAC power 2.0toS30OVDC to unit.
(3) AC notmistL OFF or ON FE.: lnutowtrfuse.1/8IAS8 1.5 to 300VAC
- ACCURACY: (1) DryContacts:
- I millIseconld ENCLOSURE: Attractivei mrlca esrryingcasew th (2) DC Voftag:; I mlllieMzcd removable hinged cover.
(3)ACVottge-
- V4cycle SIZE&WOIGHT: 101" ,"x6,?pVo tnds.
DISPLAY: Solid State. 5 digits, 0.3 Inches lrigh. UNI CORD: Provided with a 6 foot 120VAC line cord RESET: Pushbutton, rset%the display. conveanietily stored Inside top cover.
.1. The "clok' ene "ed-out"' tolerances shated below must be acde In computing the overall *ccuracy:
(a) The Ifnternl clock tolerance, over a tunpeartura renp of .209C to +0**C, is .06%.
(b) Above c-uc~les anre =I less sIgnIficant dilit. i
- 2. The AC aCcuracy uiven Is the worst case at low voltagel, and improves 1Olte witt% high voltage.
WILMAR
.? ,- ELECTROJICS, INC. NO erv~srn "AV'319F 2430 AMBLER STREET TORRANCE, CALIFORNIA 90505 a-SCE 26-426 Rev. 3 {
Reference:
PROTECTIVE RELAYS 7292 Type HFA Page 5 Multicontact Auxiliary Relays ATTACHMENT 9. 3 Sheet 50 June 4, 1979 Calculation E4C-015, rev. 0 For Ac and Dc Circuit Applications (Photo 8043394) (Pholo8025537) (Photo 8025786)
Fig. 1. Surface mounting Fig. 2. Semi-flush Fig. 3. Surface mounting (Pho t o 1227763)
(back connected) (bock connected) (front connected) Fig. 4. Type HFA Multicentact relay.
T Type HFAS1A ype HFA5? A-F Type HFA51A-H Drawout APPLICATION relay is approximately 5 cycles for the dc auxiliary switch to prevent overheating.
The type HFA relay is designed for models (60 Hertz basis). If used on dc for The increased current through the HFA application where a number of auxiliary tripping a circuit breaker, the operating operating coil will assure operation of the functions must be performed simul- time should be reduced to approximately 1 target on the protective relay.
taneously. Six contacts are provided. If cycle in order that no appreciable time more than six circuits are to be controlled, delay will be added to the operating time of the coils of two or more relays may be the protective relay. This can be accom-plished by selecting a relay which has a CONTACT RATING connected in series (dc only) or in parallel.
lower voltage rating than the control Contacts are electrically separate and All HFA relays have six electrically easily reversible from normally open to separate contact circuits adaptable for circuit. Recommended voltage ratings for normally closed or vice versa. The current-either circuit-opening or circuit-closing one minute tripping duty are listed below.
closing rating of the contacts is 30 amperes.
applications.
The HFA relays are available for front or The current-carrying rating is 12 amperes use Target Time to continuously or 30 amperes for I minute.
back connection. The front connected Close N .O .
p lye V S upt _.111 o lv iap Celr.
relays are suitable for surface mounting Relay S O (Voltsg oil n Contacts only as shown in Figure 3. (Volts D ,) oted Current (Amps)
Prot.
Relay at Pickup (60 Hz Contact Interrupting Ratings The back connected relays are suitable 4Volts Dc?(Aps (amps a Bosis)
I 2 1 2 for either surface mounting or semi-flush vo-t Con2.o.. t'p,
" ,on ac 's Conttc Contacts 2.,
mounting: a steel flange is provided for the 24 6 5-3 2.0 (Amps) APc) latter. These are shown in Figures I and 2. 32 6 7.1 2.0 Approx- NON-INDUCTIVE The HFA relay is also available in an S2 48 12 2.7 2.0 imately one 6 to 24 15 30 15 30 1 30 type draw-out case as shown is Figure 4. 1.7 0.2 cycle A8 a 16 230 20 30 125 24 125 3 6 460 8 12 250 1 1 2 APPLICATION 250 A8 0.9 0.2 Selection of Dc Relays for Tripping Duty INDUCTIVE Where Operating Coil Circuit Is Opened By 24 6.0 12 115 20 20 48 3.5 6 230 O 10 An Auxiliary Switch. When so applied, the HFA operating 125 1.0 1.5 460 5 5 The operating time of the standard HFA 250 0.3 0.35 coil must be opened by the breaker
- Changted since Ap,. 23, 1979 issue. aI/c) Data subject to change w.thoul notice RA 700, 701,702, 711-713, 722, 723, 731-737 GENERALa ELECTRIC E4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Pane of UALULULAM IUIN4 Zr1l- I CCN CONVERSION:
ICCN NO. CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 kV Switchgear Sheet of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 REV ORIGINATOR DATE IRE DATE REV ORIGINATOR DATE IRE DATE 0 Joon kim Bill Lennartz D j ATTACHMENT 9. 4z.
S"John Horak"
<johnhorak@BASLER .corn> To <biswasak@songs.see.com>
03/14/2006 05:30 AM cc Subject RE: Basler relay BE1-27 Asok Below is some info on the relay that can help in your evaluation. To fully assess drift of the relay over time, we would have to go to a bill of materials of the product, assess the effects of aging on each critical part, and then assess the relay performance after the aging process. The permutations of the effect of aging is huge. This would not be an easy task, so you must interpret this as.it was written by an engineering giving "of the cuff' and "shooting from the hip" answers. Also, he estimates that 0.25V setting accuracy (for a 55-160V range relay) should be relatively easy. You might experiment with the relays you have to verify this or see if you feel better accuracy is achievable.
John:
I'll state what I can.
- 1) Estimate of typ.%cal 27/59 drift over time The BEI-27/57 does not use any components within its sensing and reference circuitry that would have any significant change in performance over time (ex.
No aluminum electrolytic's, etc.). The declared pickup accuracy was intended to be the accuracy over all varying elements including time and temperature.
The original design testing, 21 years ago, should have included an accelerated life test to simulate 20 years. To pass this test, the device was/is required to maintain its accuracy spec. The test report also illustrates that pickup accuracy is typically better than 0.3% over temperature, which is often the most severe element. My "shot from the hip answer" is that the pickup accuracy should maintain within its declared accuracy, for a 5 year interval. If it makes you feel more comfortable, I suggest doubling the accuracy allowance.
- 2) Accuracy/Resolution of 27/59 pickup setting pot The pickup setting control, is a continuous adjustable potentiometer. The potentiometer resistive element is laser trimmed cermet, and not a wire-wound element. Therefore, its resistance in continuous and is not stepped by the wiper. The total rotation travel is approximately 300 degrees. If the setting range is 55 - 160, then the adjustment is approximately .35 v/deg rotation. In theory, any setting can be made. Being practical, I would expect it to be reasonably easy to set within 0.25v for the range stated.
Hope this helps - Jeff John Horak. Application Engineer, Basler Electric 6&;2Q S. Broadway #B, Centennial CO 80121 3G3-730-3021(v), 303-730-3022(F), 303-882-3686(C)
Jo'hnhorak~basler.com SCE26-426Rev. 3iRelerence:SO123-XXIV-7.151 E,4C-015
ICCN NO./
E&TS DEPARTMENT PRELIM. CCN NO. Paae of CALCULATION SHEET CCN CONVERSION:
CCN NO- CCN Project or ECP: SONGS 2 & 3 Calc No. E4C-015 Sheet--__L of
Subject:
TLU Calculation for Loss of Voltage Relay at Class 1 E 4.16 kV Switchgear REV ORIGINATOR DATE IRE DATE REV ORIGINATOR tDATE IRE DATE Bill Lennartz 0Joon kim ~ IL ATTACHMENT 9.5 "John Horak" To <kimji@songs.sce.com>
0 History:
<johnhorak@BASLER .com>
03/30/2006 08:58 AM cc bcc Subject RE: Dropout accuracy of BE1-27 relay This message has been replied to.
Joon:
has no intentional I have been enlightened by the factory. The BEl-27/59 intent in the design of the relay is for dropout to be hysteresis. The is trying The 2% accuracy statement exactly the same voltage as pickup.
is no more than 2% different from pickup, but the factory to say dropout 99.9% of pickup. There is reports that in actual application, it will be from the output of the "V > Pickup Setting" comparator that no feedback pickup and dropout are the same. Output could affect dropout, and hence, prevented by time delay tripping in this fashion: if sensed chatter is level, and the relay is oscillating voltage is right at the pickup pickup and dropout, the relay never times out, and hence the between range.
within the trip relay will not time out unless voltage is solidly in the a 1.5-2 cycle minimum trip contact close time There is also relay.
John Horak, Application Engineer, Basler Electric 6620 S. Broadway #B, Centennial CO 80121 303-730-3021(V), 303-730-3022(F), 303-882-3686(C) johnhorak@basler.com 4-SCE26426 Rev. 3 1
Reference:
SO 123-XXIk,-7.15]
ATTACHMENT 9. Sheet 100 Calculation E4C-015, rev. 0 10
_ 4 40 -
30, 'i 20 1.0 03
-o1___
0.1 01 48 44 40 36 32 28 24 20 16 12 8 4 0 Range 3 96 88 80 72 64 56 48 40 32 24 16 8 0 Range 4 D2867-23 Voltage Difference From Pickup Figure3-2. Undervoltage, Short Inverse Timing CharacteristicCurve (1000 100 99 60 10 (D 50 40 30 "
20 (
10 07 05 1.0 03 02 0.1 48 44 40 36 32 28 24 20 16 12 8 4 0 Range 3 96 88 80 72 64 56 48 40 32 2,4 16 B 0 Range 4 D2857-24 Voltage Difference From Pickup 06-09-03 Figure3-3. Undervoltage,Medium Inverse Timing CharacteristicCurve BE127/59 Functional Description 3-3 E4C-015
ENCLOSURE 3 ATTACHMENT A Proposed Change Number (PCN) 577 Supplement 1 Existing Technical Specification page, Unit 2
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii. 162D > 78 seconds and 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D > 1.83 seconds and
- 2.17 seconds.
ii. 162S 2 4.16 seconds and < 4.44 seconds.
iii. 162T 2 0.88 seconds and < 1.62 seconds.
- b. Loss of Voltage Function Ž 3554 V and
- 3796 V Time delay: 2 0.75 seconds and
< 1.0 seconds at 0 V.
- Dropout and pickup values will be set to Ž4151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 2 3.3-34 Amendment No. q-74-,196 I
ENCLOSURE3 ATTACHMENT B Proposed Change Number (PCN) 577 Supplement I Existing Technical Specification page, Unit 3
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii 162D Ž 78 seconds and
- 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D 2 1.83 seconds and
- 2.17 seconds.
ii. 162S Ž 4.16 seconds and < 4.44 seconds.
iii. 162T Ž 0.88 seconds and
- 1.62 seconds.
- b. Loss of Voltage Function Ž 3554 V and
- 3796 V Time delay: Ž 0.75 seconds and
- 1.0 seconds at 0 V.
- Dropout and pickup values will be set to 24151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 3 3.3-34 Amendment No. 46-,5-187 I
ENCLOSURE 3 ATTACHMENT C Proposed Change Number (PCN) 577 Supplement I Proposed Technical Specification page, redline and strikeout, Unit 2
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii. 162D 18 seconds and 7
- 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D Ž 1.83 seconds and
- 2.17 seconds.
ii. 162S Ž 4.16 seconds and < 4.44 seconds.
iii. 162T 5 0.88 seconds and
- 1.62 seconds.
- b. Loss of Voltage Function 2 3554-V 364~4.89 V,and *! 37196-V 36-94.52 V.
Time delay: 4-.-T5 0ý.69 seconds and 1.0 seconds at----(voltage change e<
from 115.5 V to 57.0 V).
- Dropout and pickup values will be set to 24151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 2 3.3-34 Amendment No. 174,-96
ENCLOSURE3 ATTACHMENT D Proposed Change Number (PCN) 577 Supplement 1 Proposed Technical Specification page, redline and strikeout, Unit 3
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii. 162D Ž 78 seconds and 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D Ž 1.83 seconds and
- 2.17 seconds.
ii. 162S 2 4.16 seconds and
- 4.44 seconds.
iii. 162T Ž 0.88 seconds and
- 1.62 seconds.
- b. Loss of Voltage Function 2!3554-V 36"44.'"89' V and _<3796-V 3694.52 V.;
Time delay: 0--7-5 '0.69,seconds_ and
_ 1.0 seconds aet-O- (voltage change from 115.5 V to 57.0 V).
- Dropout and pickup values will be set to Ž4151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 3 3.3-34 Amendment No. +/-6-, 87
ENCLOSURE 3 ATTACHMENT E Proposed Change Number (PCN) 577 Supplement 1 Proposed Technical Specification page, Unit 2
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii. 162D > 78 seconds and
- 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D Ž 1.83 seconds and
- 2.17 seconds.
ii. 162S Ž 4.16 seconds and < 4.44 seconds.
iii. 162T Ž 0.88 seconds and
- 1.62 seconds.
- b. Loss of Voltage Function > 3644.89 V and
- 3694.52 V.
Time delay: 2 0.69 seconds and
< 1.0 seconds (voltage change from 115.5 V to 57.0 V).
- Dropout and pickup values will be set to Ž4151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 2 3.3-34 Amendment No.
ENCLOSURE 3 ATTACHMENT F Proposed Change Number (PCN) 577 Supplement 1 Proposed Technical Specification page, Unit 3
DG-Undervoltage Start 3.3.7 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform CHANNEL CHECK. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.3.7.2 Perform CHANNEL FUNCTIONAL TEST. 24 months SR 3.3.7.3 Perform CHANNEL CALIBRATION with setpoint 24 months Allowable Values as follows:
- a. Degraded Voltage Function:
- i. Dropout Ž 4123.0 V*
ii. Pickup
- 4144.6 V*
SDVS (Sustained Degraded Grid Voltage Signal):
Time delay:
- i. 127D
- 2.17 seconds.
ii. 162D Ž 78 seconds and
- 128 seconds.
DGVSS (Degraded Grid Voltage with SIAS Signal):
Time delay:
- i. 127D Ž 1.83 seconds and
- 2.17 seconds.
ii. 162S Ž 4.16 seconds and < 4.44 seconds.
iii. 162T Ž 0.88 seconds and
- 1.62 seconds.
- b. Loss of Voltage Function Ž 3644.89 V and
- 3694.52 V.
Time delay: Ž 0.69 seconds and
- 1.0 seconds (voltage change from 115.5 V to 57.0 V).
- Dropout and pickup values will be set to Ž4151.0 V and *4172.8 V, respectively, until actions identified in SCE submittal dated May 27, 2005 are completed.
SAN ONOFRE--UNIT 3 3.3-34 Amendment No.