ML17349A249

Unit 3 Load Centers Undervoltage Relay Set Points.

ML17349A249
Person / Time
Site:	Turkey Point
Issue date:	03/27/1992
From:	Larsen R BECHTEL CORP.
To:
Shared Package
ML17349A248	List: ML17349A247 ML17349A249 ML17349A250 ML17349A251 ML17349A258
References
21701-523-E-01, 21701-523-E-01-R00, 21701-523-E-1, 21701-523-E-1-R, NUDOCS 9206050153
Download: ML17349A249 (130)

Text

ATTACHMENT 2 RELAY SETPOINT CALCULATION 9206050153 920602 PDR ADOCK 05000250 P PDR

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CALCULATION COVER SHEET PROJECT JOB NQ CALQ NQ SHEET Turkey Point Units 3 and 4 21701-523 21701-523-E-01 1

SUBJECT TOTAL ko OF SHEEIS lAST SHEET kc Unit 3 Load Centers Undervoltage Relay Set Points 27 27 DISCIPUNE Electrical CALCULATION PREUMINARY COMMITTED CONFIRMED SUPERSEDED CANCELED STATUS DESIGNATION C2 NCP NONE PROGRAM NO.(S) VERSCN/RELEASE NQ COMPUTER PROGRAM Table of Contents Sheet I. Purpose/Objective II. Bases/Assumptions III. References 3 /

IV. Analytical Calculation 4 V. Conclusion 23 A endices

1. Relay Setting Curves (4 sheets)

Attachments

1. Maintenance and test equipment inaccuracies (6 sheets)

2. ITE 27N tolerances and burden values (3 sheets)

3. IAV-55C tolerances, burden values and time-voltage curves ('p sheets)

4. ITE Potential Transformer Accuracies (5 sheets)

5. IAV-53K Undervoltage Relay Burden Values (3 sheets)

6. ITE-27H Undervoltage Relay Burden Values (2 sheets)

7. Voltage Transducer Burden Values (3 sheets)

8. Voltmeter Burden Values (3 sheets)

9. Cable Impedance Values (3 sheets)

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ka Issued for Use By Z7 Approved 3/~~

Date REVISIONS QA.2704 Rev. 12/89 IED 21)

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1. 0 PURPOSE:

This calculation determines the set points for the 3A, 3B, 3C & 3D Load Center undervoltage relays (Non SI). The degraded voltage relay protection scheme consists of an ITE 27N 10 to 100 sec. definite time delay relay combined with a GE IAV55C inverse time characteristic relay.

There are two of these relay combinations per load center. The ITE relay will be used to protect the system for sustained low voltages and the IAV relay will be used to protect the system from severe low voltages for a short duration. This calculation is in support of PC/M 91-128.

2.0 BASES/ASSUMPTIONS:

2.1 The undervoltage relay set points will be based on the Technical Specification required setpoints (Reference 3.1) .

C 2.2 Additional setpoint chara'cteristics, for steady state pickup voltage and ride through transient voltages, will be based on relay coordination study FLO 53-20.5004 (Reference 3.2) and Calculation EC-145 (Reference 3.3) .

2.3 The maintenance and testing equipment tolerances will be based on the information provided by the Plant Electrical Maintenance Department (see Attachment / 1).

2.4 The undervoltage relays repeatability will be based on the vendor catalog information and additional correspondence with the vendor (see Attachments 2 & 3) .

2.5 The inaccuracies of the ITE potential transformer will be based on the vendor information provided in Attachment 4.

2.6 The relay set points will be determined based on the "Square-Root-Sum-of -the-Squares" (SRSS) methodology per Standard IC-3.17 (Reference 3 ') ~ The setting tolerances will not be included in the SRSS formula. These tolerances will be determined based on the allowable setpoint margins.

2.7 The margin for the steady state and transient voltages as provided in study FLO 53-20.5004 (Reference 3.2) will be neglected.

2.8 Cable resistances will be considered at 55'C.

2.9 Contact resistances for all control circuits and devices will be accounted for by increasing the cable lengths by 10%. Resistances of control circuit fuses are considered negligible. The potential transformers and the cable ties for the sub-panels are located in ev

CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 ORIGINATOR DATE CHECKED DATE the same compartment of the load center. Therefore, the resistance of the internal jumper wiring of the load centers will be considered negligible due to their short lengths.

3.0 REFERENCES

3.1 Turkey Point Unit 3 & 4, Technical Specifications, Amendment 151/146 Table 3.3-3, "Engineering Safety Features Actuation System Instrumentation Trip Setpoints".

3.2 Report No. FLO 53-20.5004, "Emergency Power System Enhancement Project, Relay Coordination Study", Rev. 11.

3.3 Calculation EC-145, "PSB-1 Voltage Analysis for Electrical Auxiliary System",,Rev. 5.

3.4 FPL Standard No. IC-3.17, "Instrument Setpoint Methodology for Nuclear Power Plants", Rev. 2.

3.5 PC/Ms90-070 & 90-071, "Load Center and Switchgear Rooms Chilled Water Air Conditioning System", Rev. 1, Attachment 7, "FSAR Change Package".

3.6 "Switchgear and Control handbook", by Robert W. Smeaton, McGraw-Hill, Inc., 1977.

3.7 Drawing 5613-E-28, Sh. 13A, Rev. 2, <<Electrical Auxiliaries, Metering and Relaying, 480V Load Center 3A".

'3. 8 Drawing 5613-E-28, Sh. 13B, Rev. 2, "Electrical Auxiliaries, Metering and Relaying, 480V Load Center 3B".

3.9 Drawing 5613-E-28, Sh. 13C, Rev. 2, Electrical Auxiliaries, Metering and Relaying, 480V Load Center 3C<<.

3 '0 Drawing 5613-E-28, Sh. 13D, Rev. 2, "Electrical Auxiliaries, Metering and Relaying, 480V Load Center 3D<<.

3.11 St. Lucie PC/M 120-191M, Revision 0, 480 Volt and 4160 Volt Technical Specification Loss of Voltage and Degraded Voltage Relay Setpoint Drawings, dated October 18, 1991.

3.12 Drawing 5177-E-45A/91-128, Rev. 0, "Circuit and Raceway Schedule (Setroute) <<.

3.13 Drawing 5610-E-9-16, Sh..1, Rev. 12, "480V Load Center 3A (3B01)

Internal Wiring Diagram".

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4.0 CALCULATION

4.1 Trip Setpoints based on Reference 3.1 Table 3.3-3 Section 7.c (480V Load Centers (Znverse Time Relays) Degraded Voltage):

Trip 120V Trip Load C nter ~~in point **

424 Z 30 isec SV (60 sec delay) 106 i 1.25V Z

(60 sec 30 sec delay) 3B 427 g SV (60 sec 106.75 g 1.25V (60 sec g 30 sec delay) ~ 30 sec delay) 3C 437 g SV (60 sec 109 . 25 1.25V (60 sec i 30 sec delay) 30 sec delay) 3D 435 t

i 5V (60 sec 30 sec delay) 108.75 g 30 1.25V (60 sec sec delay)

• • These numbers are based on a 480/120V potential transformer.

(i.e. (424 g SV) /4 = 106 g 1.25V) 4.2 Additional Setpoint Verifications based on Reference 3.2, Attachment 6:

(Steady State)

(Transient)

Verify relay Verify relay will will not not operate in even ec nds at.

3A 111.25V +0, -1

• 92.25V +0, -1 3B 113.25V +0, -1

• 96.25V +0. -1 3C

• 110.50V +0, -1

• 91.50V +0, -1 3D

• 110.50V +0, -1 92.75V +0, -1

• Reference 3.2 Attachment 6, was based on Calc. EC-145 Rev. 4, however EC-145 was revised (see Reference 3.3) without revising Reference 3.2. Therefore, these numbers were revised to agree with the values indicated in Reference 3.3.

The actual steady state and transient voltage values were determined by Calc. EC-145 (Ref. 3.3); therefore, these values will be used to set the relays. The -1 volt margin considered in the steady state and transient voltages was to account for the

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drifting of the ZAV relay setpoint. This margin will be dropped since this calculation will determine the appropriate relay settings based on the applicable relay and equipment inaccuracies.

4.3 Relay Setpoints for the ITE relays based on the restrictions from Section 4.1 6 4.2:

Trip Load Center Ssetsoint 3A 106V 3B 106. 75V 3C 109.25V 3D 108. 75V 4.4 Test'Equipment Inaccuracies: (See Attachment 1)

Since the voltage margin between the Technical Specifications and the setpoint verification values is minimal, the best test equipment available must be used, i.e., the HP 34401A.

Voltmeter:

HP 34401A - i .06% of RDG i .03t Range Por a temperature range, of 28 to 554C (82.4 to 1314P), the following additional inaccuracies must be accounted for:

.005% of RDG ~ ~ 003% of Range

• • Based on Reference 3 ' the design limit for the Load Center Room HVAC System is 104'P.

Therefore, the total inaccuracy of the HP 34401A will be:

.065% of RDG ~ .033% of Range Timer:

Doble P-2200 - i (with P-2010 attachment)

.01% of RDG i 3 LSD Notes:

The 100V range scale will be used for the HP voltmeter. At this range scale, the maximum reading is 120.0000V (see Attachment 1).

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2. Device F-2200 is also used as an AC power source. However, the HP voltmeter will be used to measure the voltage. Zn order to set the relays, two (2) AC power sources, connected in series, are required, both set at the 75V scale. This will allow the appropriate voltage increments to be used when setting the relay. At the 75V scale the voltage can be adjusted by .01V. i 4.5 Potential Transformer Znaccuracies:

From Attachment 4, a 480/120 potential transformer (PT) has a g

.3% accuracy under burden conditions of categories W (12.5 VA), X (25.0 VA), Y (75.0 VA) and i 1.2 for a Z (200 VA) burden category.

These burden category values were obtained from Reference 3.6, "Switchgear and Control Handbook".

a Utilizing the drawings from References 3.7 through 3.10, the worst" case burden on the PTs can be calculated.

Device Bur n ~Refer oo ZAV53K1A Relay 17.0 VA (worst case) Attachment 5 ZTB-27H Relay 1.2 VA Attachment 6 ZAV55C Relay 21.6 VA (worst case) Attachment 3 ZTB-27N Relay :5 VA Attachment 2 VCC Volt XDCR 4.0 VA Attachment 7 VCC-252 Voltmeter .096 VA Attachment 8 Total: ~44 6 Va Since this worst case burden load falls within the Y burden category the PT's inaccuracy will be g .3%.

4.6 Tolerance for ZTB Relay:

4.6.1 Tap Setting Tolerance The tolerance for the ZTB Relay will be determined from the repeatability values from Attachment 2 and 4 and the testing inaccuracies from Attachment 1.

ZTB Relay repeatability:

.2% for Temp. range (O'C to 40'C) (32'F to 104'F) **

.1% for DC Voltage range (100V to 140V)

.1% for constant temp. and DC voltage Time delay ~ 10% or i 20 msec, whichever is greater.

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• • Based on Reference 3.5 the design limit for the Load Center Room HVAC System is 104'F.

Tolerance for the printed dial marking is not used since this tolerance is applicable to factory calibrated relays.

Using the SRSS method of calculating the setting tolerances:

TOL,M(P.T. acc.)~+(relay acc.)~+(relay acc.)~+(relay acc.)3+M&TE~

TOL6n~ 3>~ + 2<~ + l<~ + 1>~ + M&TE~

Where M&TE - the inaccuracies due to the Maintenance and Test Equipment.

Converting the M&TE (i.e'., HP 34401A voltmeter) inaccuracies into a percentage based on the trip points from Section 4.4:

Per Section 4.4 the inaccuracy of the HP 34401A is + (.065% of Reading + .033% of range). On the 100V range scale the full range error is 100 X ,00033 - .033 volts. Since the full range errors are the largest (on a percentage basis of the voltage reading) at the smallest voltage readings the lowest set point from Section 4.3 will be used to cah.culate the M&TE.

106V x .00065 + .033V .1019V

.1019/106 - ~096 Therefore, the worst case inaccuracy of the voltmeter is +.096%.

Thus, the total tolerance for the ITE relay voltage setpoint for each load center is:

TOLna~ 3%a + 2>a + lga + lga + 096ga + 3~99 + Set~ox For the ITE relay the relay setting tolerance will be + .1V.

4.6.2 Time Setting Tolerance Per Attachment 2 the ITE relay has a tolerance of +10% or + 20 msec, which ever is greater, with respect to the time delay feature of the relay.

Per Section 4.1, the relay will be set for a time delay of 60 seconds. Since 10% of 60 is greater than 20 msec, a tolerance of

+ 10% will be utilized.

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8 From Section 4.4, the tolerance for the Doble F-2200 timer is +

.01% of RDG + 3 LSD.

At 60 seconds:

60 x .0001 + .03 ."036 sec ~ 06%

TOLrva&10%~ + .068* ~+ Otl0, +

Setto'he relay setting tolerance for the ITE time delay will be + .5 sec.

Therefore, the tolerance for the time delay-60 sec x 10% + .5 sec - ~+ 5~se 4.7 Tolerance for IAV Relay The tolerance for the IAV Relay will be determined from the repeatability values from Attachment 3 and the testing equipment inaccuracies from Attachment l.

IAV Relay repeatability for field adjusted relays:

+2% for the tap setting voltage

+4% for the vendor published / time curves

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4.7.1 Tap setting tolerances: (voltage)

The tap setting tolerance consists of the +2% for the repeatability of the relay, + .3% for the PT inaccuracies,. the tolerance due to the M&TE, plus the set point tolerance.

TO@~2%~ + .3%* + M&TE~ +

Setto'or the IAV relay, the relay setpoint tolerance will be + .25V.

Per Attachment 3, the IAV relay contacts will go from closed to open (i.e., the relay will pickup) at a voltage no greater than

.110% of the tap setting voltage.

(Tap Setting + Tolerances) x 110% < steady state Therefore, the tap setting of the IAV relay should be set to a value less than or equal to the Steady State (margin neglected) value, from Section 4.2, divided by 110%., minus the total tap settings tolerance TOLIpy

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1 CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 9 ORIGINATOR DATE CHECKED DATE 270 Since the M&TE value is largest at the lowest setting value, a conservative relay setting value of 95V will be assumed.

M&TE 95 x 0006 + 033 .1%

95 For LC 3A:

11l~i - I. ' ' .

110%

~l1.125 - 2.025% x tap setting - .25 > tap setting 100.886 > (1 + 0.02025) x tap setting Tap setting < 98.88V Therefore, the relay tap setting should be set to a value less than or equal to 98.88 + .25V.

For conservatism, a tap setting of For LC 3B:

113 25 - 2.025e x tap setting - .25 ) tap setting 1.1 102.705 > (1 + .02025) x tap setting Tap setting < 100.67V.

Therefore, the relay tap setting should be set to a value less than or equal to 100 '7 + .25V, For LC 3C & LC 3D:

~0~0 - 2.025% x tap setting - .25 > tap setting 1.1 100.205 > (1 + .02025) x tap setting Tap setting < 98.22V Therefore, the relay tap setting should be set to a value of less than or equal to 98.22 + .25V.

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21701-523 21701-523-E-01 0 10 ORIGINATOR DATE CHECKED DATE Since the above setpoints are above 95V, the M&TE values utilized to calculate these setpoints are acceptable.

4.7.2 Tap setting tolerances: (time)

+ 4% for the relay

+ .01% of RDG + 3 LSD for Doble F-2010 timer Using the SRSS method the tolerance of the IAV relay time characteristic can be calculated:

TOLgpy f4% + M&TE + Setg+g For the IAV relay, the time setting tolerance will be + .5.-sec.

4.8 Voltage drop between load centers and sub-panels:

The following section will determine the additional voltage drop due to the location of the sub-panels.

load center 65'ub panel The following example fs for LC3A, others are similar.

3B01 3C467 to PT 65'TE-27N This wire is shared by both channels

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15'*

IAV Based on References 3.12 and 3.13, all conductors are

¹12 AWG wires.

LEGEND'TC

- Test switch

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21701-523 21701-523-8-01 ~ 0 11 DATE CHECKED DATE Z7 9Z Cable length was based on the (worst case) conduit length from Reference 3.12 in addition to a each end of the cable.

tail length of 5't The IAV relay is located in the next compartment over from the PT. Based on a visual walkdown of the jumper routing within the load centers, 15'ill be conservatively assumed.

~Burden Rela Burden Curr nt Reference ITE-27N .5VA I 120 V .00416A Attachment 2 IAV 6. 13VA Q 115V* . 053A Attachment 3

• This value was determined using linear interpolation based on the worst case IAV tap setting of 98 'V (per Section 4.7) .

At lower voltages, these current values will decrease; therefore, for conservatism, these values will be used.

Impedance of Cable Z = DC resistance x ,AC/DC ratio + j reactance .

(Attach 9, Sh. 1) (Attach 9, Sh. 2) (Attach 9, Sh. 3)

For a 112 AWG wire, the AC/DC ratio equals 1.000. Per Reference 3.12 a 1 1/2" conduit will be used. Considering a conservative spacing of 1 1/2" between the conductors, the reactance equals approximately .086 Q/10006m This reactance is negligible (X< .1R) when compared to the resistance; therefore, the reactance will be neglected.

Z ~ 1.92 Q/1000' 1 = R = 1.92 Q/1000'~~~562xIxtx (R+ jX) x (11) Where:

I = current t = one-way length R = resistance/1000'.1

= 10% contact resistance (per basis 2.9) 4 8 1 V<ppp for ITH-27N:

1000'pposite 1.1 x ~120 x [.00416 x 65' 2 + .053 x 65' .00416 x 65'from channel)]

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21701-523 21701-523-E-01 0 12 ORIGINATOR DATE CHECKED DATE V~~ . 009V For conservatism ~V will be used.

4.8.2 V~~ for IAV:

1.1 x ~9 g x [.00416 x 65' .053 x (65' 15') x 2]

1000'd~

- .019V For conservatism ~0 V will be used.

4.9, Relay Coordination:

4.9.1 ITE Dropout Voltage Setting LC 3A:

Setpoint - 106 +,1V Min Steady State Voltage - 111.25V, (Per Sections 4.3 and 4.6.1) (Per Section 4.2)

Inaccuracies-106 x + .399% + .423V

.423V .1V .1V .423V I- I I I I I 105.477V 106V 106.523V 111.24V **

Tech Specs.

1.25V 1.25V 104.75V 106V 107.25

• • The Vd~ value calculated in Section 4.8.1 must be subtracted from the Min. Steady State voltage values to ensure the relays will not dropout at the Min. Steady State bus voltages.

LC 3B:

Setpoint 106.75 + .1V Min Steady State Voltage - 113.25V Inaccuracies-106.75 x + .399% -+ .426V

.426V .1V .1V .426V

- I ---- I

- I I 106.224V 106.75V 107.276V 113.24V Tech Specs.

1.25V 1.25V I- I 105.50V 106.75V 108V

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21701-523 21701-523-E-01 0 13 ORIGINATOR DATE CHECKED DATE 4 ~789 LC 3C:

Setpoint - 109.25 + .1V Min Steady State Voltage - 110.50V Inaccuracies-109.25 x + .399% + .436V

.436V .1V .1V .436V 110.49V I--------I- I I---------I I 108 '14V 109.25V 109.786V Tech Specs.

1.25V 1.25V I

108V 109.25V 110.50V LC 3D:

Setpoint - 108.75 + .1V Min. Steady State Voltage - 110.50V Inaccuracies-108.75 x + .399% -+ .434V

.434V .1V .1V .434V 110.49V I- I

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---I I 108.216V 108.75V 109.284V Tech Specs.

1.25V 1.25V I I 107.50V 108.75V 110.0V 4.9.2 ITE Pickup Voltage Setting The ITE relay pickup should be set below the steady state voltage (tolerance neglected) values as shown in Section 4.2.

Tap setting + tolerances < steady state From Section 4.6.1 the worst case ITE tolerances is + .399% +

Set~,q, For LC 3A:

Min. Steady State Voltage - V~~ - 111.24V (Per Sections 4.2 & 4.8.1)

From Section 4,9.1, the maximum dropout voltage is 106.523V.

Inaccuracies - 111.24 x + .399% - + .444V (worst case) ev ~

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.444V Set<<~ .444V I I I 106.523V 106.967V 110:796V 111.24V Therefore, the pickup voltage range can be set between 106.967V and 110.796V (i.e., 108.882 + 1.914V) 1P For LC 3B:

Min. Steady State Voltage - V~~ 113.24V Max. Dropout Voltage 107.276V Inaccuracies - 113.24 x + .399% + .452V

.452V Sett,z .452V I I

-I-----------I 107.276V 107.728V 112.788 113.24V Therefore, the pickup setting range is 110.258 + 2.53V.

For LC 3C:

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Min. Steady State Voltage - V,~ - 110.49V Max. Dropout Voltage 109.786V Inaccuracies - 110.49 x + .399% - + .441V

,441V .441V I

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I 109 '86V 110.227V 110.049V 110.49V Since these two values overlap, the relay dropout setting value for LC 3C must be shifted more towards the lower end of the Technical Specification value. With a + .1V relay setting tolerance the maximum pickup value is: 110.49 - .441V - .1V-109.949V.

For conservatism, a relay pickup value of 109 94 + 1V will be used.

With this pickup value, the maximum dropout value will be:

109.94V - .1V - .'441V - 109.399V.

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21701-523 21701-523-E-01 0 15 ORIGINATOR OATE CHECKED DATE Based on Section 4.9.1, the max. dropout setting will be:

.436V .1V .1V .436V I-----------I- I I 108.327V 108.863V 109.399V Therefore, the new dropout setpoint should be set to a value less than or equal to 108.863V. For conservatism, the new dropout setting will be 108 85 + 1V.

.436V .1V .1V .436V I

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I-- ----I-------- I---------- I 108.314V 108.85V 109.386V This'ropout range is still acceptable since it is still within the Tech. Spec. range of 108 to 110.50V.

For LC 3D:

Min. Steady State Voltage - V~~ - 110.49V Max. Dropout Voltage - 109.284V Inaccuracies - 110.49 x + .399% + .441V

.441V Setz .441V I-----------I- I I 109.284V 109.725V -

110.049V 110.49V Therefore, the relay max. pickup setting is 109.887 + .162V.

For conservatism a pickup setting of 109 89 + 15V will be used.

Based on the above relay pickup values the 110V tap should be selected and then the pickup potentiometer should be adjusted accordingly. To obtain the desired dropout values, the 90% or 99% (of pickup) dropout tap shall be selected and the dropout potentiometer should be adjusted accordingly.

4.9.3 IAV Coordination Based on Section 4.8.2 the V~~ from the IAV is .02V. When this Vd~ value is subtracted from the Min, Steady State Voltage values and the IAV tap settings, from Section 4.7.1, are recalculated the following tap settings result:

New Conservative LC Ta Setti Setti Section 4 1 3A s 98.86V 98.75V

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'327 9 3B s 100.63V 100.50V 3C&3D 6 98.19V 98.00V Since the conservative values are still less than the recalculated tap setting values, these conservative setting values are still applicable.

Per Section 4.2 the transient for LC 3A - 92.25V for 7 seconds (neglecting the margin)

The V~~ from Section 4.8.2 needs to be subtracted from the transient value to ensure the relays will not drop out at these transient bus voltages (i.e., 92,25 - .02 - 92.23V).

LC 3A tap setting from Section 4.7.1 is 98.75V 92.23/98.75 - 93.4% of tap For LC 3B

- 96.23V Transient - V~~

Tap setting - 100.5V 96,23/100.50 95 '% of tap

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For LC 3C Transient - V~~ - 91.48V Tap setting 98.0V 91.48/98.0 93.3% of tap For LC 3D Transient - Vd~ - 92.73V Tap setting 98.0V 92.73/98.0 - 94.6S of tap From Attachment 3, Inverse Time Characteristic Curves, at seven seconds, the above percent of tap values cannot trip the relay.

Since these percent of tap values are greater than 90%, a 0 tap of 90% will be assumed. At this 90% tap, a time dial of 3 or greater can be used without tripping the relay. However, this does not include any relay tolerances; therefore, a time dial

• of 4 or greater shall be used. For conservatism, a time dial of 5 will be used for the IAV relays.

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0 CALCULATION SHEET JOB NO. CALO. NO. REV. No. SHEET NO.

21701-523 21701-523-E-01 0 17 ORIG I NATOR DATE CHECKED OATE Inverse Time Characteristic Curves:

For LC 3A (From Section 4.7)

Tap Setpoint - 98.75 + .25V (i.e., 100% of tap)

Inaccuracies - 98.75 x + Z.3%~ + 2%~ + .1%~ -+ 2.0V 2.0V .25V .25V 2.0V I- I -I I

--- I 96.50V 98.75V 101.00V Voltage Range

% of Tap Min. Mid. Max.

90% 86.85V- 88.88V 90.90V 80% 77.20V 79.00V 80.80V 70% 67.55V 69.13V 70.70V 60% . 57. 90V 59 '5V 60.60V 50% 48.25V 49.38V 50.50V 40% 38.60V 39.50V 40.40V 30% 28.95V 29.63V 30.30V 20% 19.80V 19.75V 70.20V 10% 9.659 9.88V 10.10V 0% OV OV OV Utilizing Attach. 3 for a Time Dial (TD) setting - 5, the following values and tolerances were obtained:

Time Inaccuracies + 44%~ + M&TE~ (per Section 4.7.2)

Setting Tolerance - + .5 sec A new M&TE will be calculated based on the timer inacc'uracies from Section 4.4.

M&TE Ti e x 0001 + 03 Time Time Total

% of Tap Time M&TE Inaccuracies Inaccuracies

• 90% 13.70 sec .23% + 4.01% + 1.05 sec 80% 8.00 sec .39% + 4.02% + .82 sec 70% 5.70 sec .54% + 4.04% + ,73 sec 60% 4.45 sec'68% + 4.06% + .68 sec

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CALCULATION SHEET e JOB NO.

21701-523 ORIGINATOR CALO. NO.

21701-523-E-01 DATE CHECKED REV. NO.

0 DATE SHEET NO.

18 50% 3.75 sec .81% + 4.08' .65 sec 3.40 sec .89% 4.10' .64 sec 3.19 sec .95% 4.11' .63 sec 40'0'0'0'a 3.03 sec 1.00% 4.12@ .62 sec 2.98 sec 1.02% + 4.13' .62 sec 2.93 sec 1.03% 4.13@ .62 sec

• This number includes the time inaccuracies converted to seconds, plus the setting tolerance.

For LC 3B:

Tap Setpoint 100.50 + .25V Inaccuracies-100.50 x + l.3%~ + 2%~ + .1%~ + 2.035V 2.035V .25V .25V 2.035V I

---

I---------I--------I---------I 98.215V 100.50V 102.785V Voltage Range 0 of Tap Min." Mid. Max.

90'0%

88.39V 90.45V 92.50V 78.57V. 80.40V 82.22V, 68.75V 70.35V 71.94V 70'0'0$ 58.93V 60.30V 61.66V 49.11V 50.25V 51.38V 40'0$

39.29V 40.20V 41.10V 29.46V 30.15V 30.83V 19 '4V 20.10V 20.55V 20'0'a 9.82V 10.05V 10.27V OV OV OV For LC 3C & LC 3D:

Tap Setpoint>- 98.00 + .25V Inaccuracies - 98.00 x + l.3%> + 2%~ + .1%~ - + 1.984V 1.984V .25V .25V 1,984V I

---

I---------I--------I---------I 95.766V 98,00V 100.234V ev ~

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CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 19 ORIGINATOR DATE CHECKED DATE Voltage Range 0 of Tap Min. Mid. Max.

90'0%

86.19V 88.20V 90.21V 76.61V 78.40V 80.19V 67.04V 68.60V 70.16V 70'0'0% 57.46V 58.80V 60.14V 47.88V 49.00V 50.12V 40% 38.31V 39.20V 40.09V 30'0@

28.73V 29.40V 30.07V 19.15V 19.60V 20.05V 10'a 9.58V 9.80V 10.02V OV OV OV See Appendix 1 for the ITE & IAV relay coordination curves for the above relay voltage values.

4.10 Relay Check Points These check points will be used to verify that the IAV relay is following its inverse time characteristic curve. These check points will be at approximately 85%, 70% and 30% of the tap settings.

When the relays are tested, the potential transformers are no longer utilized. There&ore, the tolerance due to the PT's inaccuracies can be deleted from the total inaccuracy of the relay.

For LC 3A:

Voltage -Setting:

Tap Setting - 98.75 + 25V (per Section 4.7.1)

M&TE - .1%

Inaccuracies - 98.75 x + 42%' .1F - + 1.977V 1.977V .25V 25V 1.977V I- I -l I I 96.523V 98.75V 100.977V To make the checking easier, whole numbers will be used for the check points.

k'<-

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I l

CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 20 ORIGINATOR DATE CHECKED DATE Voltage Range 0 of Tap Min. Mid. Max.

85.06% 82.106V 84.00V 85.894V 69.87% 67.444V 69.00V 70.556V 30.38% 29.323V 30.00V 30.677V To account for the M&TE when the relays are checked, the M&TE must be subtracted off of the Min. & Max. values determined above.

Q 84V, M&TE 84 x 0065 + 033 .104% + .087V 84 Q 69V, M&TE .113% - + .078V Q 30V, M&TE - .175% + .053V 84.00 + 1.894 - + 087 - 84 + 1.807V 69.00 + 1.556 - + .078 - 69 + 1.478V 30.00 + .677 - + .053 30 + .624V For ease in using these checkpoints, the values will be rounded off to two places after, the decimal.

/

Time setting:

From Attachment 3, based on the previously determined tap percentages, the following times were obtained:

of Ta 85.06% 10.35 sec.

69.87$ 5.70 sec.

30.38% 3.20 sec.

Time inaccuracies - + f4%' M&TE'Section 4.9.3)

Setting tolerance - + .5 sec However, when the relays are being checked, the M&TE value needs to be subtracted off of the total time band. Therefore:

at 85.06%

Total time band 10.35 sec. x + 4% + .5 sec. + .91 sec.

at 69.878 Total time band 5.70 sec. x + 4% + .5 sec. -+ .73 sec.

- ev.

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CALCULATION SHEET

~

JOB NO. CALO. NO. REV. NO ~ SHEET NO.

21701-523 21701-523-E-01 0 21 ORIGINATOR DATE CHECKED DATE

34) e~

at 30.38%

Total time band - 3.20 sec. x + 4% + .5 sec. + .63 sec.

From the above analysis, the following checkpoints were obtained:

0 Ta Volta e ime 85.06% 84 + 1.81V 10,35 + .91 sec.

69.87% 69 + 1.48V 5.70 + .73 sec.

30.38$ 30 + .62V 3.20 + .63 sec.

For LC 3B:

Voltage Setting:

Tap Setting - 100.50 + .25V Inaccuracies 100.50 x + /2%e + .1%2 - + 2.012V 2.012V .25V .25V 2.012V I- I

- I I

-- -I 98.238V 100.50V 102.762V I

Voltage Range 0 of Tap Min. Mid. Max.

84.58% 85.00V 86.913V 29.85'3.087V 69.65% 68.424V 29.325V 70.00V 30.00V 71.576V 30.675V Q 85V, M&TE .104% -+ .088V Q 70V, M&TE .112% + .078V Q 30V, M&TE .175% + .053V 85.00 + 1.913 - + .088 85 + 1.825V 70.00 + 1.576 - + .078 70 + 1.498V 30.00 + .675 - + .053 30 + .622V Time Setting; Total 0 of Tap (per Attach 3) Time Band

• 69.65'9.85'ime 84.58$ 10.10 sec.

5.60 sec.

+ .90 sec.

+ .72 sec.

3.17 sec. + .63 sec.

• Based on the same method used for LC 3A.

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CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 22 ORIGINATOR DATE CHECKED DATE

-R..

For LC 3C & 3D:

Voltage Setting:

Tap Setting - 98.00 + .25V Inaccuracies - 98.00 x + l2%e + .1%e - + 1.962V 1.962V .25V .25V 1.962V I

---

I---------I--------I---------I 95.788V 98.00V 100.212V Voltage Range 8 of Tap Mid. Max.

29.59'in.

84.69'0.41%

81.127V 67.443V 28.345V 83.00V 69.00V 29.00V 84.873V 70.557V 29.655V Q 83.00V, M&TE .105% + .087V Q 69.00V, M6TE .113% - + .078V Q 29.00V, M&TE - .179% - + .052V 83.00 + 1.873 - + .087 83 + 1.786V 69.00 + 1.557 - + .078 69 + 1.479V 29.00 + .655 - + .052 ,29 + .063V Time Setting:

Time Total 0 of Tap (per Attach 3) Time Band

• 84.69% 10.20 sec. + .91 sec.

70.41% 5.75 sec. + .73 sec.

29.59% 3.15 sec. + .63 sec.

• Based on the same method used for LC 3A.

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CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 23 ORIGINATOR DATE CHECKED DATE

> ~>)

5.0 nclusions'ased on the above calculations the following setpoints have been determined:

Relay Set Points:

LC 3A:

~ERela ~IAV Re a Pickup Tap set to 98.75 + .25V Tap set to 108.89 + 1.9V Time Dial set to 5 Dropout Tap set to 106 + .1V 60 + .5 sec time delay LC 3B:

~T1 ~Re~a IAV ~RE Pickup Tap set to 100.50V + .25V Tap set to 110.26 + 2.5V Time dial set to 5 Dropout Tap set to 106.75 + .1V 60 + .5 sec time delay LC 3C:

Rela 3D'IAV

~IT Rela Pickup Tap set to 98.00V + .25V Tap set to 109.94 + .1V Time dial set to 5 Dropout Tap set to 108.85 + .1V 60 + ,5 sec time delay LC LXFM~ ~Vh~a Pickup Tap set to 98.00V + .25V Tap set to 109,89 + .15V Time dial set to 5 Dropout Tap set to 108.75 + .1V 60 + .5 sec time delay

- ev.

V

CALCULATION SHEET JOB NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 24 DATE CHECKED DATE Relay Check Points:

Load

~e~er V~o~ta y.

3A 84.00 + 1.81V 10.35 + .91 sec.

69.00 + 1.48V 5.70 + .73 sec.

30.00 + .62V 3.20 + .63 sec.

3B 85 00 + 1.83V F 10.10 + .90 sec.

70.00 + 1.50V 5.60 + .72 sec.

30.00 + .62V 3.17 + .63 sec.

3C & 3D 83.00 + 1.79V 10.20 + .91 sec.

69.00 + 1.48V 5.75 + .73 sec.

29.00 + .60V 3.15 + .63 sec.

The following summarizes=the results of this calculation For LC 3A:

Per Section 4,1, the trip setting of the degraded voltage relay scheme is 106 + 1.25V (60 +30sec). The setting of the ITE relay including all tolerances is 106 + .523V (60 + 6.5 sec),

per Section 4.9.1. Since the relay setting is within the Technical Specification setting tolerances the relay setting is acceptable. The IAV relay will not operate until the voltage drops to at least 101.00V, per Section 4.9.3, the worst case tap setting of the relay. Therefore, at the Tech. Spec. trip values only the ITE relay is involved.

Per Section 4.2 the degraded voltage relay scheme should not operate at a steady state bus voltage of 111.25V. As shown in Appendix 1 and Section 4.9.1, the highest possible voltage at which the ITE relay will trip is 106.523V. The IAV relay will not trip because the worst case tap setting for this relay is 101.00V. Since these values are well below 111.25V, the tap settings are acceptable, Also per Section 4.2 the relay scheme should not operate if the bus voltage drops to 92.25 for 7 seconds. From the plotted curves on Appendix 1 the IAV relay will not trip before a time of at least 14 seconds at 92.25V. At this voltage the ITE relay will operate however the contacts will not close until at least 53.5 seconds due to the 60 second time delay (see Section 4.7). Since the trip time for these relays are greater than 7 seconds the tap settings values are acceptable.

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CALCULATION SHEET JOB NO ~ CALC. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 25 ORIGINATOR OATE

>5)

For LC 3B:

Per Section 4.1, the trip setting of the degraded voltage relay scheme is 106.75 + 1.25V (60 + 30 sec). The setting of the ITE relay including all tolerances is 106.75 + .526V (60 + 6.5 sec), per Section 4.9.1. Since the relay setting is within the Technical Specification setting tolerances the relay setting is acceptable. The IAV relay will not operate until the voltage drops to at least 102.785V per Section 4.9.3, the worst case tap setting of the relay. Therefore, at the Tech. Spec. trip values only the ITE relay is involved.

Per Section 4.2, degraded voltage relay scheme should not operate at a steady state bus voltage of 113.25V. As shown in Appendix 1 and Section 4.9.1, the highest possible voltage at which the ITE relay will trip is 107,276V. The IAV relay will not trip because the worst case tap setting for this relay is 102.785V. Since these values are well below 113.25V, the tap settings are acceptable.

Also per Section 4.2, the relay scheme should not operate if the bus voltage drops to 96.25 for 7 seconds. From the plotted curves on Appendix 1 the IAV relay will not trip before a time of at least 14 seconds at 96.25V. At this voltage the ITE relay will operate however the contacts will not close until at least 53.5 seconds due'to the 60 second time delay. Since the trip time for these relays are greater than 7 seconds the tap settings values are acceptable.

For LC 3C:

Per Section 4.1, the trip setting of the degraded voltage relay scheme is 109 '5 + 1.25V (60 + 30 sec). The setting of the ITE relay including all tolerances is 108.85 + .536V (60 + 6.5 sec) per Section 4.9.2. Since the relay setting is within the Technical Specification setting tolerances the relay setting is acceptable. The IAV relay will not operate until the voltage drops to at least 100.234V per Section 4.9.3 the worst case tap setting of the relay. Therefore, at the Tech. Spec. trip values only the ITE relay is involved.

Per Section 4.2 the degraded voltage relay scheme should not operate at a steady state bus voltage of 110.50V. As shown in Appendix 1 and Section 4.9.2, the highest possible voltage at which the ITE relay will trip is 109.386. The IAV relay will not trip because the worst case tap setting for this relay is 100.234V. Since these values are well below 110.50V, the tap settings are acceptable.

- ev.

l CALCULATION SHEET JOS NO. CALO. NO. REV. NO. SHEET NO.

21701-523 21701-523-E-01 0 26 ORIGINATOR DATE CHECKED DATE

.7 'l2 Also per Section 4.2 the relay scheme should not operate if the bus voltage drops to 91.50 for 7 seconds. From the plotted curves on Appendix 1 the IAV relay will not trip before a time of at least 14 seconds at 91.50V. At this voltage the ITE relay will operate however the contacts will not close until at least 53.5 seconds due to the 60 second time delay. Since the trip time for these relays are greater than 7 seconds the tap settings values are acceptable.

For LC 3D:

Per Section 4.1, the trip setting of the degraded voltage relay scheme is 108.75 + 1.25V (60 + 30 sec), The setting of the ITE relay including all tolerances is 108.75 + .534 (60 + 6.5 sec) per Section 4.9.1, Since the relay setting is within the Technical Specification setting tolerances the relay setting is acceptable. The IAV relay will not operate until the voltage drops to at least 100.234V, per Section 4.9.3, the worst case tap setting of the relay. Therefore, at the Tech. Spec. trip values only the ITE relay is involved.

Per Section 4.2 the degraded voltage relay scheme should not operate at a steady state bus voltage of 100.50V. As shown in Appendix 1 and Section 4.9.1, the highest possible voltage at which the ITE relay will trip is 109.284V. The IAV relay will not trip because the w6rst case tap setting for this 'relay is 100.234V. Since these values are well below 110.50V, the tap settings are acceptable.

Also per Section 4.2 the relay scheme should not operate if the bus voltage drops to 92.75 for 7 seconds. From the plotted curves on Appendix 1 the IAV relay will not trip before a time of at least 14 seconds at 92.75V. At this voltage the ITE relay will operate; however, the contacts will not close until at least 53.5 seconds due to the 60 second time delay. Since the trip time for these relays are greater than 7 seconds the tap settings values are acceptable.

In addition, per Sections 4.7 and 4.9.2 the IAV and ITE relays will pick up at a voltage less than the applicable load center's steady state bus voltage level.

Based on the above calculation the degraded voltage protection scheme will operate correctly at the above stated relay setpoints.

- ev.

CALCULATION SHEET JOB NO. CALO. NO+ REV. NO. SHEET No.

21701-523 21701-523-E-01 0 27 ORIGINATOR DATE CHECKED DATE 27 9 NOTE: The results of this calculation are only applicable if the Maintenance and Test Equipment as stated in Section 4.4 are used. In addition, the test equipment manufacturers stipulated requirements, to obtain the specified accuracies, must be observed.

- ev.

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CALCULATIONSHEET APPENDIX BI7OI- 5Q3 j

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Attachment Np. P.O.Box l4000, Juno Beach, Ft. 33408 0420 7O]- a Gale No. ol + - o Np 0 JPN-PTN-91-1011 Sht. f of December 23, 1991 Bechtel Power Corporation NorthCorp Center, Suite 5001 3950 RCA Boulevard Palm Beach Gardens, Florida 33410 Attn: Mr. R. E. Gallagher, Project Manager TURKEY POINT NITS 3 L 4 NODIFICATION TO lOAD CENTER UNDERVOLTAGE 'RELAY SCHEME I/S MOD: 1341; TOP 20 ITBl 11 FILE: TPN-87-015-2, PCN 91-128

Reference:

1) Memorandum from Michael Powers to D. P. Koennicke dated 12-13-91

'entlemen:

t The Ref. 1 letter notified NucTear Engineering of the existing and proposed calibration instrument accuracy for the test equipment used in the calibration of underfrequency relays in the 480V degraded voltage relaying scheme. Ref 1 is attached for your information and use in preparation of PCM 91-128.

Should you have any questions, please call 0. P. Koennicke at 694-3805 or Q. J.

Harris at 694-3110.

Very truly yours, S. T. Hale PTN Engineering Manager CC: H. S. Bowles PEG/PBG File Room Copy JPN/JB R. S. Kundalkar JPNS/PTN M. Pearce PTN/PLT M. Powers PTN/PLT L. J. McCullough JNE/JB S. J. Pleasure JPN/JB sn FPL Cfouff:ufnffany

OEC-18-'91 12:26 ID: JPN JUNO BEACH 631 TEL NO:487-694-S898 c(781 P82 I>>I('.( Olf(('t.'(((r(l~(~ ~~

((!

~

Attachment No.

Job o -5'ale No.

Rev. No.

Sht. > Of TOt Doug Koennicke DATEi December 13, 1991 FROM: Michael E. Powers DEPARTMENT+ F&CS PTN

SUBJECT:

calihratioh Instrument aoauraoy for the 480 V'Degraded Voltage Relaying Bc(home, PC/H 91-120.

Following is. a list of the test equipment with associated

. accuracy presently used in the calibration of underfrequency relays in the 480 V degraded voltage relaying scheme!

1. Multimeter (for use as an A.C. voltmeter only.)

(Accuracy +/- 0.5% of full scale, or better)

Fluke 8060A Data Precision 2480R, or 1455

2. Timer (Accuracy +/- 0.1% of reading, er better}

Doble F-2200 with F-2010 attachment (for use as a timer only, voltage output is measured by the multimeter.)

An Hp 34401A voltmeter is on order and will be added to the list of multimeters above.

associated with it:

It has the following specifications Basic A.C. Accuracy 1 V to 750 V A.C. Ranges at 10 Hz to 20 KHz Range Scales of 100 mV, 1 V, 10 V, 100 V, and 750 V 0.064 of Reading 0.034 of Rangi 1 For temperatures of 28 to 55 degrees Celsius additional factors must be considered:

0.0054 of Reading 0.0034 of Range JAB N chael E. Powers Protection & Control Supv.

Turkey Pqint Nuclear Plant-ott iPL Group con(pa((y lnuo (cell ',,;. ~~ t 't"r .tb g

Sechtel e NorthCorp Center, Suite 5001 3950 RCA Boulevard Palm Beach Gardens, Florida 33410 (407) 694 8400 January 13, 1992 AttaChment No.

tl Sht. > Ot ~

Mr. S. T. Hale PTN Engineering Project Manager Florida Power & Light Company Post Office Box 3088 Florida City, FL 33034 Attention: Mr. W. J. Harris Turkey Point Units 3 & 4 REA 87-015 DWA 942808 IS Mod. No. 1341 System 006 PC/M 91-128 Mo at o 480V d o ta 0 a Letter No. N-92-0011'ob No. 21701-523 Files: 0112, S-21701-523

Reference:

N/A

Dear Mr. Hale:

Enclosed for your information are Conference Notes No.92-001 documenting the January 3, 1992 meeting between FPL and Bechtel, held at the Turkey Point Plant.

The meeting was held to determine the relay testing sequence, review the schematic changes, determine the relay trip flag requirement, and determine the relay setting tolerance.

Action Summary: Items requiring action are as described in the enclosed Conference Notes. /

Sincerely, C. L. Weaver Project Engineer RRL:mtm Bechtel Power Corporation A ~t ~ a c~~~~

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Enclosure to N-92-0011 Pa e 3 of 5 Attachment No.

A question source be the voltage was adjusted.

can be Conference Notes No.92-001 Job Ot

~

N.

Rev. No.

Sot. of brought up at this time; by what increments can the voltage O

After looking at the voltage source, at the 150V scale, adjusted by k.lV. At the 75V scale the voltage can be adjusted to R.01V. In order to set the relays the voltage has to adjustable for R.01V. Therefore, two voltage sources will be used in'series, one set at the 150V scale and the other set at the 75V scale.

A discrepancy was noted between the M6TE value for the timer given by FPL letter JPN-PTN-91-1011 and a value previously obtained. The actual inaccuracy

'is 2.018 of RDG 23LSD not 2.18 as noted in the letter. Therefore, the relay setting calculation will use this latest tolerance value not the value given by the FPL letter.

During a telephone conversation on January 7, 1992, M. Powers also informed R.

Larsen that the output range of the timer is from 0 to 999.99 seconds.

Therefore, the worst case tolerance for the 23LSD (least significant digit) tolerance refers to the 100th decimal place.

6. After the meeting a walkdown was performed by R. Mines, R. Larsen 6 R. Maxwell to verify that sufficient terminal points were available for this modification.

The inspection confirmed that adequate spare terminal points were available.

R. Maxwell advised us to make sure the conduit routing does not interfere with the removal of the load center breakers.

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Attaenrnefit hfo.

JOb / Z /-Sa CBlC tfO.

• t Vo Of reading+'lo Of range) I>> RPr. No. o ACCuraCy SPeCifiCatiOnS Sht. o of Temperature unction Frequency, 24 Hour lzl 90 Oay 1 Year Coefficient etc. 23'C R1'C 23'C 25'C 23'C+ 5'C O'C -18'C Range"'00.0000 28oC 55oC DC Voltage mV L0030+ ON30 0.0040+ 0.0035 0.0050+ 0.0035 0.0005+ 0.0005 1.000000 V 0.0020+ 0.0006 ON30+ 0.0007 L0040+ 0.0007 0.0005+ 0.0001 1LMON V NNIS+ ANNI LOO20+ AINS NN35+ AN5 LON5+ LO001 10L0000 V 0.0020+ 0.0006 0.0035+ 0.0006 ONIS+ 0.0006 0.0005+ 0.0001 1000NO V 0.002D+ 0.0006 0.0035+ 0.0010 0.0045+ 0.0010 0.0005+ 0.0001 TrueRMS 100.0000 mV 3Hz-SHz 1.00+ 0.03 1.00+ 0.04 1.00+ 0.04 0.100+ 0.004 AC Voftagef" 5Hz-10Hz 0.35 o 0.03 035+ 0.04 0.35+ 0.04 0.035+ 0.004 10Hz-20kHt 0.04+ 0.03 0.05+ 0.04 0.06+ 0.04 0.005+ 0,004 20 kHz ~ 50 kHz 0.10+ 0.05 0.11+ 0.05 , 0.12+ 0.04 0.011+ 0.005 50 kHz - 100 kHz O.SS+ 0.08 0.60+ 0.08 0.60+ 0.08 0.060+ 0.008 100 kHz - 300 kHz lsl 4.00+ 0.50 4.00+ 0.50 4.00+ 0.50 0.20+ 0.02 1.000000 V 3Hz-SHz 1.00+ 0.02 1.00+ 0.03 1.00+ 0.03 0.100+ ON3 to SHz- laHt 035+ 0.02 035+ 0.03 035+ 0.03 0.035+ ON3 l 750.000 V 10 Hz ~ 20 kHz 0.04+ 0.02 0.05+ 0.03 0.06+ 0.03 0.005+ DN3 20kHz-50kHz O.ID+ 0.04 0.11+ 0.05 0.12+ 0.05 0.011+ 0.005 50 kHz - 100 kHzlsl 0.55+ 0.08 0.60 ~ 0.08 0.60+ 0.08 0.060+ 0.008 100 kHz -300 kHzfsl 4.00+ 0.50 4.00+ 0.50 4.00+ 0.50 0.20+ 0.02 IOLNXNQ 1 mA Current Source L0030+ L0030 0.008+ DNI 0.010+ 0.004 0.0006+ 0.0005 1.000000 kQ 1 mA ON20+ 0.0005 ONB+ 0.001 0.010+ 0.001 0.0006+ 0.0001 1NXONkQ lao pA LN2O+ NO5 NXI+Loot Agtg+ Loot NXN6+ Aggot 100.0000 kQ 10 ItA ON20+ 0.0005 LIN8+ DNI 0,010+ ONI 0.0006+ 0.0001 1.000000 MQ "S.0pA L002+ 0.001 LIN8+ ONI 0,010+ 0.001 0.0010+ 0.0002 10.00000 MQ 500 nA 0.015+ ONI a020+ O.OOI 0.040+ ONI 0.0030+ 0.0004 100.0000 MQ 500 nA//10MQ 035+ 0.010 0.800+ 0.010 ONO+ 0.010 0.1500+ 0.0002 DC Current 10.00000 mA <0.1 V Surden Voltage ON5+ 0.010 0.030+ 0.020 0,050+ 0.020 o 0.002+ 0.0020 100.0000 mA <0.6 V 0.010+ 0.004 0.030+ 0.005 0.050+ 0.005 0.002+ 0.0005 1.000000 A <1V 0.050+ 0.006x 0.080+ 0.010 0.100+ 0.010 0.005+ 0.0010 3.00000 A <2V 0.020 '.100+

0.120+ 0.020 0.120+ 0.020 0.005+ 0.0020 True RMS 1NIÃXNA 3Hz-SHz 1.00+ O.ol 1.00+ 0.04 1.00+ O.ol 0.100+ 0.006 AC Currenti'1 5 Hz ~ 10 Hz 030+ 0.04 030+ 0.04 am+ Lol 0.035+ 0.006 10 Hz-5 kHz Ala+ LOI Ala+ L04 Ala+ AOI AOIS+ NXN 3.00XOA 3Hz-5Hz 1.10+ 0.06 1.10+ 0.06 1.10+ 0.06 0.100+ 0.006 5 Hz ~ 10 Hz 035+ 0.06 035+ 0.06 035+ 0.06 0.035+ 0.006 10Hz-5kHz 0.15+ 0.06 0.15+ 0.06 0.15+ 0.06 0.015+ 0.006 Frequency 100 mV 3Hz ~ 5Ht 0.10 0.10 0.10 0.005 or Periodl" 10 5 Ht ~ 10 Hz 0.05 0.05 0.05 0.005 750 V 10Hz-40Hz 0.03 0.03 0.03 0.001 40 Hz - 300 kHt 0.006 O.at 0.01 ONt 1000.0Q 1 mA Test Current 0.002+ 0.010 0.008+ 0.020 0.010+ 0.020 0.001 + 0.002 Diode Test 1.0000V 1 mA Test Current 0.002+ 0.010 0.008+ 0.020 0.010+ 0.020 0.001+ ON2 I'I Specifications are for I hr warm up and 6rrt digits. Slow ac fitter.

es aaoaaaa ee tgs.emm 8se Itl Relative to calibration standards.

DDOODOD Dl 20% over range on all ranges except 1000Vdc and 750Vac ranges.

254.4 mm 37I.Om IO For sinewave input >5% of range. For inputs from 1% to 5% of range and < 50kHz, add 0.1% of range additional error.

Ist 750V range limited to 100 kHz or 8xtat Volt Hz.

IO Typically 30% of reading error at 1MHz.

ee 18 DDDDDDD ee ea.smm tape frf Specifications are for 4 wire ohms function or 2 wire ohms using Math Nulb 0 D ODD 212,6 DD mm Kll, 34S.3mm Withcut Math Null, add 0.2 0 additional error in 2 wire ohms function.

l>> Input >100 mV. For 10mV inputs muhipfy% ol reading error x10.

l I

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Jpb 4/-533 IB 7.4.1.7-7 f%INlN ASEA BROWN 8OVERI Cl M.

RBv. Np.

Issue D S!!!. I af I N STRUCT I ON S Single Phase Voltage Relays Type 27N HIGH ACCURACY UNDERVOLTAGE RELAY Type 59N HIGH ACCURACY OVERVOLTAGE RELAY Type 27N Catalog Series 211T Standard Case Type 27N Catalog Series 411T Test Case Type 59N Catalog Series 211U Standard Case Type 59N Catalog Series 411U Test Case ggpanroLTADC R~<

~ QggtCWT ASEA BROWN BOVERI

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Attachment No.

Job i'7o-Ca)c No ztvnr- as-e.-oi Rev. No. o Sht. e of V4W Sensel Rete Rel yQ Hl ON 0 4W f SW F ceo Coeel ME'NV 'euE 0::S 0 (0II

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it out ompromise.

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Single-Phase Voltage Relays IB 7. 4 ~ 1 ~ 7-7 Page 5 SPECIFICATIONS Input Circuit: Rating: type 27N 150v maximum continuous.

@~AC(lrnent NO.

type 59N 160v maximum continuous.

JDb a" oi-'S y Burden: less than 0.5 VA at 120 vac. Gal(l No. >j/o - -e-o c Frequency: 50/60 Hz.

Rev. No. o Ghi a p(,p Taps: available models include:

Type 27N: pickup 60, 70, 80) 90, 100, 110 volts.

70, 80, 90) 100, 110, 120 volts.

dropout- 60, 70i 80t 90, 99 percent of percent of pickup.

pickup'0 30, 40, 50, Type 59N: pickup - 100, 110, 120, 130, 140, 150 volts.

dropout- 60, 70, 80, 90, 99 percent of pickup.

Operating Time: See Time-Voltage characteristic curves that follow.

Instantaneous models: 3 cycles or less.

Reset Time: 27N: less than 2 cycles; 59N: less than 3 cycles.

(Type 27N resets when input voltage goes above pickup setting.)

(Type 59N resets when input voltage goes below dropout setting.)

Output Circuit: Each contact 0 120 vac O 125 vdc e 250 vdc 30 amps. 30 amps. 30 amps. tripping duty.

5 amps. 5 amps. 5 amps. continuous.

3 amps 1 amp. 0.3 amp. break, resistive.

2 amps. 0.3 amp. 0.1 amp. break; inductive.

Operating Temperature Range: -30 to +70 deg. C.

Control Power: Models available for Allowable variation:

48/125 vdc O 0.05 A max. 48 vdc nominal 38- 58 vdc 48/110 vdc o 0.05 A max. 110 vdc 88-125 vdc 220 vdc e 0.05 A max. 125 vdc 100-140 vdc 250 vdc O 0.05 A max. 220 vdc " 176-246 vdc 250 vdc 200-280 vdc Tolerances: (without harmonic fjlter option, after 10 minute warm-up) and dropout settings with respect to printed dial markings

/'ickup (factory calibration) -" +/- 2X.

Pickup and dropout settings, repeatability at constant temperature and constant control voltage = +/- O.is. (see note below)

No

~

Pickup and dropout settings, repeatability over "allowable" dc control power range:

te:

+/- O.is. (see note below)

Pickup and dropout settings, repeatablility over temperature range:

-20 to +55oC +/- 0.4X 0 to +agog e/- 0 2%

thse three tolerances shown should be may be cumulative. Tolerances assume Time Delay: Instantaneous models: 3

-20 to +70oC +/-0,7x (see note below) considered independent and pure sine wave input sign al.

cycles or less.

Definite time models: +/- 10 percent or +/-20 millisecs.

whichever is greater.

Harmonic Filter: All ratings are the same except:

(optional) Pickup and dropout settings, repeatabilfty over temperature range:

0 to +55oC +/- 0.75K -20 to +70oC +/-1.5x

+10 to +404C +/- 0 '0K Dielectric Strength: 2000 vac, 50/60 Hz., 60 seconds, all circuits to ground.

Seismic Capability: More than 6g ZPA biaxial broadband multifrequency vibration without damage or malfunction. (ANSI C37.98-1978)

I, Attachment No.

Job CI N.

Rev. No.

Sht. > Of ASEA BROWN BOVERI Addendum to IB 7.4. 1.7-7(D)

INSTRUCTIONS High-Accuracy Undervol tage Relay INTRODUCT I ON This addendum covers two models with the Definite-Long-Time delay characteristics.

These models are identified by catalog numbers that have the digit "5" or "7" directly following the letter "T" in the catalog number; i. e.: catalog numbers of the f orm 411T5.",>>:; or 411T7::>>::.

TINING CHARACTERISTIC The time-voltage char acteristic is definite-time as shown on page 8 of the main instruction book, wi th the time-del ay val ues ver st'ts time-dial selection as follows:

Time .Dial Tap Pin Position Nominal Delay- Time Seconds 411T5>>::>: 411T7>>::>:

¹ 1 2 seconds 10 seconds

¹ 2 4 20

¹ 3 6 30

¹ 4 10 50

¹ 5 14 70

¹ 6 H7 0 100 CATALOG NUMBERS and CHARACTERISTICS Ti me Del ay Type Pickup Range Dropout Range Pickup Dl opout Catalog No.

27N 60-110v 70-9'? / Inst 2-20sec 41 1 T5175 70-120v 70-?'?/ Inst 2-20aec 411T53?5 60-110v 70-'?'? / inst 10-100aec 41 1 T?175 70-120v 70-9'? / Inst 10=100sec 411T?>75 Catalog numbers shown are f or drawout-test-caae model s, whi ch are preferred for new appl i.cati ons.

Units in the standard-case. catalog series 211T::;;>: would have the same electrical characteristics.

Rev 1 ( i/'?2)

ABB Power T8 D Company Ptotectlye Relay Divison rIf38 Sndwdntt ROad. Suite 2 Aewwlown PA <8106

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GEH-'1 768E Attache >en'. Ai>.

Job r ale No Reu=>

Rev. No.

INS TRUCTIONS Sht I of 7 UNDERVOLTAGE RELAYS TYPES IAV54E IAV55C IAV54P IAV55P IAV54H IAV55H IAV55J

+.'GENKRhK EIEClRICi'.~

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'N ITCH tslNKIIOaO eC

<<0>'q'E Meter and Control 205 Great Valley Parkway Malvern, PA 19355-0715

k t GEH-1768 8t""hn'Ien' ~. 3 JOIi CalC N0.

O MOUNTING RBV. MQ.

Sht. ~ p~

The relay should be mounted on a vertical surface. The outline and panel-drilling dimensions are shown in Figure 12.

CONNECTIONS The internal ,connection diagrams are shown in Figures 5, 6 and 7. Typical external connections are shown in Figure 8.

One of the mounting studs or screws should be permanently grounded by a conductor not less than No. 12 B&S gage copper wire or its equivalent.

ADJUSTMENTS Tar et and Seal-in Unit For trip coils that operate on currents ranging from 0.2 up to 2 amperes at the minimum control voltage, set the target and seal'-in tap plug in the 0.2 ampere tap.

The tap plug is the screw holding. the right-hand stationary contact of the seal-in unit. To change the tap setting, first remove the connecting plugs. - Then take a screw from the left-hand stationary contact and place it in the desired tap.

t Next, remove the screw from the other (right hand) tap, and place it in the -left-hand contact. Following this procedure prevents the right-hand stationary contact from getting out of adjustment. Screws should never be left in both taps at the same time.

Volta e Settings The contact-operating voltage may be changed by the position of the tap plug in the tap block at the top of the relay.. The range of this adjustmpnt is from 55 to 140 volts on the 115 volt ratings, fromm 110 to 280 volts on the 230 volt rating, and from 220 to 560 on the 460 volt rat.'ings. Screw the tap plug firmly into the tap marked for the desired voltage (i.e., above which the relay is not to operate).

The tap settings indicate voltage values at which the contacts will close. A spring-adjusting ring is provided for a sensitive adjustment of relay operation. If the factory adjustment has been disturbed, the desired operating value may be obtained by inserting a tool in the notch'es around the edge of the ring (see Figure

10) and turning the ring to the desired position. This adjustment also permits any desired setting between the taps. The relay has been adjusted at the factory to close its contacts from any time-dial position at a voltage within 5X of the tap-plug setting. For example: If the tap-plug setting is 55 volts, the contacts will close when the voltage is reduced from a higher value down to 55 volts. The relay contacts will open again at no more than 110K of the ta settin . For the 55 volt tap setting. the contacts will open when the voltage is increased to a value greater

'than 55 but less than 61 volts.

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GEH-1768 At./chal fQ pqt- gtg.

Job I- ot3 Caic No. -E-0/

Rev. No.

2= of.

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6

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2 Q Li I Pigure 2 (0362A0618-2) Time-Voltage Curves for Type ZAV54E and ZAV55C Relays

• Revised since last issue 10

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PO Boxla000 Juno Beach F< 33gg 0a~

FPL JPN-PTN-92-5122 Bechtel Power Corporation NorthCorp Center, Suite 5001 MAR ) 0 1992 3950 RCA Boulevard Palm Beach Gardens, Florida 33410 Attn: Mr. R. E. Gallagher, Project Manager Attachment No Job l70- -e d -s TURXEY POINT UNITS 3 6 4 Calc No.

480V UNDERVOLThGE SCHE3K MODIFICATION I/S MOD: 1341; REh NO: TPN 87-015 Sht.~of ~~

Rev. No.

PC/M: 91-128; TOP 20 ITEM FILE NO: PC/M 91-128 ll

Reference:

1) FPL Letter No. JPN-PTN-91-0958, dated December 5, 1991, from S. T. Hale to Peter Kotus of General Electric Company; Accuracy and repeatability information on IAV-55C relays.

2) Telecon between Ted Schiffley (OSM), Roy Bleeker (OSM), and Fred Flugger (Staff) on March 4, 1992 regarding acceptability of design input from the Original Equipment Manufacturer (OEM) of the IAV-55C relays.

Gentlemen:

/

The referericed letter requested, that GE provide written confirmation of the information regarding the accuracy and repeatability of the GE IAV-55C inverse time undervoltage relay given to your Bob Larsen by L. Scharf of GE during a telecon on October 8, 1991. Mr. Peter Kotus of GE has responded to our request and has issued a letter dated January 3, 1992 confirming the subject informytion.

The IAV relays are part. of original equipment supplied by General Electric. The information has been provided by the original equipment manufacturer and, per the referenced telecaa, may be used as design input. The letter is attached for your use and should 55": included as an attachment to the design document in which it is being refereafied.,

an FPl, Groop contpatt;-

PTN-JPN-92-5122 Page 2 If you have any questions ease contact Roy A. Bleeker ques ons, pplease at (407) 775-6077.

Ver truly yours, AtfaChment go 3 Job 5 3 Cele hto. i or-sy P. C. iggins Rev. No.

PTN P duction Engineering Manager Sht. s of PC P .:hark Enclosure CC: P. W. Black PEG/RCA R. A. Bleeker PEG/RCA C. M. Douglas w/encl PEG/RCA J. A. Porter JPNS/PLT M. C. Weeks PEG/RCA FILE: PTN-OSM-92-05

ll 44 rQ

/~Hach~ent TPhl - PThl-9 Z-5i 2,%

GE Meter 4 Control January 3, 1992 Mr, S.T. Hale PTN - Eng. Proj. Mgr.

Floz'ida Power & Light Co.

P.O. Box 3088 Florida City, FL 33034 Job Sht. ~~

Attachment No.

Calc No.

No.

o -5~>

/~~s-s'ev.

o ot ATTN.: Mr. W.J. Harzis RE! Your December 5, 1991, letter to PE Eotos regarding telecon from B. Larson (Bechtel) to L. Scharf QE on October 8, 1991, on the accuracy and repeatability of the OE DVSSC relay Dear Mr. Harris Per your request, this lettez confirms the information noted below which was provided on the subject telecon:

If the frequency and ambient temperature are held constant, then the following apply:

l. The accuracy of the IAV55C relay will be 47% of the published curve if the factory settings are not disturbed.

For example, for any particular voltage, within the zange of the published curve,.the zelay will dropout within~74 of the corresponding time as indicated by the relay curves.

Ef the relay was field adjusted, the repeatability of the relay will be within&44 of the associated time as depicted on the published inverse time cuzve.

2 The tap setting voltage accuracy of the ZAV55C relay will be45%

If if the factory tap settings have not been disturbed.

the tap settings were field adjusted, the repeatability of the relay will be within+ 2% of the tap setting.

Sincerely, Pet . Kotos P~/dbn~

cc $ J ~ Teaguc

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GEH-1768 Attachment No.

Job of-ea CaIC No.

ReV. No.

Sht. I of, The 2 ampere tap should be used with trip coils that take 2 amperes or more at the minimum control voltage, provided the tripping current does not exceed 30 amperes at the maximum control voltage. If the tripping current exceeds 30 amperes, an auxiliary relay should be- used. The auxiliary relay should be connected so that the tripping current does not pass through the contacts or the target and seal-in coil of the protective relay.

BURDENS The burdens for the various relay types at rated voltage are shown in Table 2.

TABLE 2 Ta Settin s 115V 230V 460V Rated 'At Rated Volta e Rela Coil Coil Coil Fre uenc Volt-am s Power Factor Watts IAV54E & 140 280 560 60 3.0 0.26 0.78 IAV55C 120 240 480 60 4.0 0. 26 1.0 105 210 420 60 5.2 0.26 1.4 (Burdens for 93 186 372 60 6.8 0.28 1.9 IAV54F & IAV55F 82 164 328 60 8.9 0.28 2.5 are approxi- 70 140 280 60 12.4 0.29 3.6 mately 60% of 64 128 256 60 15.1 0.30 4.5 these values) 55 110 220 60 21.6 0.31 6.7 (Burdens for 140 280 560 50 2.5 0.28 0.70 IAV54H & IAV55H 120 240 480 50 3.3 0.28 0.92

& IAV54J are approxi- 105 210 420 50 4.3 0. 28 1.2 mately 40% of 93 186 372 '50 5.7 0. 28 1.6 these values) 82 164 328 r 50 7.4 0.28 2.1 70 140 280 50 10.3 0.29 3.0 64 128 256 50 12.6 0.30 3.8 55 110 220 50 18.0 0.31 5.6 140 280 560 2.3 0.26 0.60 120 240 480 '525 3.1 0.26 0.81 105 210 420 25 4.0 0.27 1.1 93 186 372 25 5.2 0.28 1.5 82 164 328 25 6.8 0.28 1.9 70 140 280 25 9.5 0.30 2.8 64 128 256 25 11.6 0.30 3.5 55 110 220 25 16.5 0.31 5.1 RECEIVINGe HANDLING AND STORAGE These relays, when not included as a part of a control panel, will be shipped in cartons designed to protect them against damage. Immediately upon receipt of a relay, examine it for any damage sustained in transit. If damage resulting from

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Attachment No.

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-E-o I POTENTIAL TRANSFORNIERS Effective October 16, 1980 Section .3.6.4.1 September 18, 1981 Descriptive Information Page 1 240 TO 600 PRIMARY VOLTS INSULATION, CLASS 0.6 KV 50/60 HERT2 TYPE PT-6 DESCRIPTION The I-T-E Instrument Transformers are designed to the Controlled reactance is employed to minimize ratio high accuracy required to meet present day metering and'hase angle errors, and is accomplished by a precision wind-problems. ing technique. A machlrie especially designed for toroidal These transformers conform to the accuracy for meter- winding is used for winding both primary and secondary ing as established in the standard set up for the potential coils. The result is exceptional uniformity of performance.

transformers by the American Standards Association.

The windings are vacuum impregnated with a polymeriz-These transformers utilize the wound-core construction well known for its excellent magnetic properties. The ing varnish to protect against winding damage due to highest grade of oriented-grain silicon stebl is used and moisture and vibration. Additional protection against annealing is done in a carefully controlled atmosphere in vibration damage is provided by the use of neoprene order to minimize core losses. cushions.

For net price multiplier and applicable price adjustment cltatse, see Catalog Section A.1.&.0, Paya.1.

Prices subject to chanse without notice. Terms and Conditions of Sale-see Catalog Section A 1.6 1, Pace 1 and 2.

Ohtribution Apparatus Divblon W. Columbia, SC 29169 New Brown Boveri Electric Printed ln US.A. CMC

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I '70/- SR o

of November 25, 1991 Mr. Donald Hamrock ABB Power Distribution Inc.

5444 Bay Center Drive, Room 123 Tampa, FL'3609-3402 Turkey Point Units 3 and 4 e

Letter No. V-91-062 Job No. 21701-523 Files: 0116, S-21701-523

Reference:

N/A

Dear Mr. Hamrock:

We are preparing an undervoltage relay setpoint calculation for the 480V Load Centers at Turkey Point. One of the variables needed is the inaccuracies of the potential transformers.. The 480/120V PT's installed were manufactured by ITE; however, the type/model can not be determined from the design documents. We believe they are ITE Type PT-6 but there is no documentation to verify this assumption.

PI,ease verify and confirm that the potential transformers installed in the 480V Load

'Centers at Turkey Point are ITE Type PT-6. These PTs are installed in Load .Centers 3A, 3B, 3C, 3D, 4A, 4B, 4C and 4D and were supplied by ITE under Shop Order

¹ 3342503.

//

Please respond via a letter to the following address:

Mr. S. T. Hale PTN Engineering Project Manager Florida Power 6 Light Company Post Office Box 3088 Florida City, FL 33034 Attention: Mr. W. J. Harris In addition, please aend a copy of the letter to Bechtel Corporation, at our above address.

Sincerely, C. L. Weaver Project Engineer RRL:

mt'echtel Power Corporetlon A ~t ~~c~~

JL ISING P'%1NIN.

<SF> BROWN BQVBBI Attachment No.

Job Cake No, aI Rev, No.

Sht. s December 5, 1991 Mr. S. T. Hale PTN Engineerging Pro)ect Manager Florida Power E Light Company P.O. Box 3088 Florida City, Fl. 33034 Attention: Mr. W. J. Harris

Subject:

Turkey Point Units 3 and' Type PT-6 Potential Transformers Letter No. V-91-062 Job No. 21701-523 Files: 0116, 8-21701-523 This letter is to advise that these are PT6 per 'our records.

If we can be of further service, / please advise.

Very truly yours, ABB POWE DIS IBUTION INC.

Donald J. Halarock Regional Sal~ Manager DJH/ba ABB Power Distribution Inc.

ABB power Oiatretutjon Ino, Teteot Tetelex; 5444 Bay CAnter Orna Room 123 tone.'t3286 Te59 8'l3 286.1285 Tarroa. F t. 33609 3402

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INSTRUCTIONS GEIH814F Supersedes GEH-1814E Attachment No.

Job CalcNo. 4'i- > - -<

Sht.~

Aev. No.

of VOLTAGE RELAYS TYPES IAV51A IAV$3D IAV52A IAV53K IAV$3A IAV53L IAV53B IAV53M IAV$3C IAV53N I

~ ."

'4 GENERAL ELECTRIC

P'~

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AttaChment fVO.

GEH-1814 not -sa ol II . eoeoe."O TABLE III (Con't.) ReV. NO.

Sht. > of RELAY VOLTAGE TAP ** VOLT- POWER TYPES RATING SETTING AMPS FACTOR 25 - CYCLE BURDENS (Con't.)

IAV53A 115 140 1.7 0.32 0.5 5 120 "13.3 0.30 0.7 IAV538 105 2.9 0.30 0.9 93 4.2 0.30 1.3 82 5.3 0.32 1.7 70 7.5 0.34 2.6 64 9.5 0.34 3.3 55 12.9 0.39 5.0 IAV53C 115 NO TAPS 4.2 0.38 1.6

"<<Minimum pickup volts.

CHARACTERISTICS The Type IAV51A is an overvoltage relay with single-circuit closing contacts which close when the voltage increases to pickup value as set on the tap block. The'ime delay in closing the contacts is determined by the setting'of the time dial at the top of the shaft. The time-voltage characteristics of this relay are shown in Fig. 12.

The IAV52A relay is similar in every respect to the IAV51A relay except that 1t has additional contacts for closing a second circuit. The time-voltage characteristics are shown in Fig, 12.

The IAV53A relay is an under-and overvoltage relay with double-throw contacts. The left-hand contacts close as the voltage increases to some predetermined value. The right-hand contacts close when the voltage ases to some lower value, Between these two voltage values both contacts are open. Time-voltage terist1cs are shown in Fig. 13.

The Type fAV538 relay differs from the Type IAV53A relay in that it does not have seal-in elements.

Time-voltage characteristics are shown in Fig. 13.

The Type IAV53C relay is s1milar to the Type IAV53A relay except that there are no taps on the coil.

The relay is adjusted to close 1ts right contacts in )0 seconds when the voltage is reduced from 58 percent rated voltage to zero voltage; w1th this calibration~the relay closes its left contacts in approximately 10 seconds when the voltage 1s increased from 58 percent of rated voltage to rated voltage. These relays are used connected line-to-ground so that under normal conditions the relay receives 58 percent of rated phase-to-phase voltage and both relay contacts are open. If the phase to which the relay is connected 1s grounded, the relay voltage goes to zero and the right-hand contacts close in l0 seconds. If e1ther of the other two phases are grounded, the relay voltage increases to rated voltage and the left-hand contacts close in approximately 10 seconds.

~ The IAV53D relay is similar to the Type IAV53B relay except that voltage characteristics are shown in Fig. 14.

The Type tAV53K All four relays are the connecting plugs are in removed and subsequently reinserted with the it has a shorter time curve. Time-ts stmtter to the Type 1AV53A, tAV53L to tAV535, tAV53M to tAV53c eod 1AV53M tolAV530.

the double-end case with contacts connected between the upper and lower blocks and operating coils connected to both blocks. The purpose of this is to avoid false tripping relay in the reset of the breaker posit1on, relay to pick up; both plugs must be 1.ceo if circuit opening contacts closed. Insert1on of eithe'r plug causes the in place before the contact circuits are completed. See internal connections Fig. 6-8 for coil and contact

• circuits, and Fig. 11 for external connect1ons.

CONSTRUCTION These relays are of the 1nduction disk construction. The disk is actuated by a potential operating coil on a laminated U-magnet. The disk shaft carries the moving contact, wh1ch completes the tr1p or alarm ci cuit when 1t touches the stationary contact or contacts. The disk shaft is restrained by a spiral spring ve the proper contact closing voltage, and 1ts motion is retarded by permanent magnets acting on the to give the correct time delay, There is a seal-in unit mounted to the left of the shaft as shown in Fig. 15. This unit has its coil in ser1es and its contacts 1n parallel with the main contacts such that when the main contacts close, the

• Indicates revis1on

l

• 7q

~~

GEH-1814 Alachnlent No.

Job u/- g REPRESENTATIVE Cafe No. e -s Rev. No. o arious relay types are given in Table III. Sht. of TABLE III RELAY VOLTAGE TAP ~>> VOLT- POWER TYPES RATING WATTS SETTING AMPS FACTOR 60 - CYCLE BURDENS IAV51A 115 140 1.3 0.34 0.4 120 1.8 0.35 0.5 IAV52A 105 2.4 0.34 0.7 93 3.1 0.33 0.9 82 3.9 0.32 1.2 70 5.4 0,31 1.7 64 6.6 0.31 2.1 55 9.2 0.35 3.2 IAV53A, 115 140 2.2 0.32 0.7 IAV53B, 120 3.0 0.30 0.9 105 4.0 0.31 1.2 IAV53D 93 5.4 0.31 1.7 82 7.0 0.32 2.2 70 9.9 0.34 3.4 64 12.0 0.36 4.3 55 17.0 0. 39 6.6 IAV53C 115 NO TAPS 5.7 0.29 1.7 50 - CYCLE BURDENS IAV51A 115 1.2 0.34 0,4 120 1.6 0.34 0~5 IAV52A 105 2.1 0.34 0.7 93 2.8 0.38 1.9 82 3.6 0.36 1.3 70 5.1 0.34 1.7 64 6.2 0.34 2.1 55 8.2 0.34 2.9 IAV53A 115 140 1.9 0.32 0.6 5 120 2.5 0.30 0.8 IAV538 105 3.4 0.29 1.0 93 4.6 0.31 1.4 82 6.0 0.32 1.9 70 8.4 0.'35 2.9 64 12.9 0.29 3.7 55 13.2 0.35 4.6 IAV53C 115 NO TAPS 4.8 0.32 1.6 25 - CYCLE BURDENS 1AV51A 115 140 1.1 0.50 0.5 120 1.5 0.49 0.8 IAV52A 105 2.1 0.49 1.'0 93 2.7 0.47 1.2 82 3.4 0.49 1.7 70 4.8 0.49 '2.4 64 5.8 0.49 2.9 55 8.2 0.49 4.0 C

""Minimum pickup volts.

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AftBchmt.t)I go Bulletin 7.4.1-1E Job at oi-sgq ASEA BROWN BOVERI Cate No. Protective Relays Rev. No.

Sht. I pf Drawout Types 27, 27D, 27M Types 59, 59D, 59M Undervoltage and Overvoltage Relays Application Circuit-Shield Voltage Relays provide a wide range ot protective tunctions, including undervoltage protection of motors, overvoltage protection, and automatic bus trans-AELA'Y fer. Inherently high seismic and transient immunity allow

~ VIIOEAVOLRAOE the use of these relays in generating stations or sub-stations where the performance of electromechanical or r~Tl'll other types of static relays is marginal.

All types are frequency compensated tor reliable operation from 20 to 400 Hz, and have a dual nominal frequency rating of SSI 50 or 60 Hz.

m MINIE Q

$ ~ ~

The unique design ot the output circuit does not require C

~ ~

at

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seal. in contacts, allowing simplification of bus-transfer schemes. Operation indicators, however, are provided as standard features on all types.

The operating characteristic of each relay in this series is indicated as follows: H suffix tor high speed; 0 sutfix for definite time; no sutfix for inverse time.

Features

~ Frequency compensation to 20 Hz A 8

~ Inverse, definite time, or high speed C

~ Accurate, repeatable characteristics

~ Low burden 27 52 7

~ Seismic capabiIity to 6g ZPA 52 CONTROL

~ Transient immunity POWER 8

52

~ Drawout construction TC 27

(-)

TYPICAL CIRCUIT SHIELD UNDERVOLTAGE RELAY APPLICATION FREQUENCY RESPONSE TYPICAL SEISMIC TEST RESULTS Z

O ISo 0 2 I Z

)I 0 8 P I

IR pt 5 C

V lg II 80 80 100 I 2 4 10 18 0 o 0 20 40 IL FREQUENCY IN NR FAEOUENCY IN NR

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ASEA BROWN BOVERI J0b aI a ISht. .a,~

Attachment No.

a O-pt ervoltage and Overvoltage Relays Types 27, 27D, 27H, 59, 59D,. 59H Specifications Type 27 Type 59 Type 27D Type 27H Type 59D Type 27H Type 59H I tal Ialt PICKUP 100 ~T ital TAPS 110 I aal (volts) 120 130 ~ ~

140 150 I DROPOUT 60 30 TAPS 70 35 (volts) 80 40 90 45 100 50 ~ ~I ~0 ~0 ~0 ~ ~ I~ ~ I I~ ~ ~ ~ ~ I~

110 55 eal0III ol Iat TCIT00I 00\Itlll40 lat IIIII00 TYPE 27 TYPE 59 Input Circuit Rating: 160V, 50/60 Hz continuous TIME-VOLTAGECHARACTERISTICS 1.2 VA, 1.0 P.F. at 120V Control Power: 48/125 Vdc, dual rated, .08A max; 2432 Vdc, 0.08A max.

Ootput Circuit Rating: 30 Amps Tripping Duty 9 125 Vdc 5 Amps Continuous 1 Amp, Opening Resistive 0.3 Amp, Opening Inductive Temperature: Minus 20'o plus 70'C ismlc Capability: More than 6g ZPA biaxial broad-band multlfrequency vibration TIME VOLTAGE CHARACTEROTICS without damage or malfunction (ANSI/IEEE C37.98) Tatt Transient Immunity: More than 2500V, 1 MHz bursts at 400Hz repetition rate, continuous (ANSI C37.90a SWC); fast transient test; EMI 00 test Operating Time: models available: 40

~ high speed

~ inverse time delay (see curves) 0 I0 aa al al at

~ definite time delay, ranges I04T0I00 al I000CVT 00TTII0 I44TTICC tl rOar 00TTItl Ollttlp OCIIT Tte ICaa 0 I lttaaaT I0ITITTOICCT Ita TCaa TIICtaaal 0.1 - 1.0 seconds, and 1.0- ~ aattl Tlat tl IO Iaa ICCICI lta ICaa llltaaaaT l000IT Tlat tl lt at ICCaal Ita TCaa TIIClaaaT 10 seconds How To Specify Voltage relay shall be Asea Brown Boverl Type 27, 59 or ap- How To Order proved equal, drawout case, capable of withstanding up to 6g ZPA seismic stress without damage or malfunction, at minimum For a complete listing of available versions of single and voltage and time settings. A magnetic operation indicator shall three phase voltage relays see selection sheet 7.4.0.3.

be provided which retains position on loss of control power.

Built-in means shall be provided to allow operational tests with- Models are available for 24, 32, 48 or 125 Vdc control out additional equipment. power. For 120 Vac potential applications, and other control voltages contact the nearest District Office.

Additional Information To place an order, or for further information, contact the Instruction Book IB 18.4.7.2 nearest District Office, or the Sales Manager, Protective Relay Selection Sheet 7.4.0,3 Relays.

ABB Power Tranamlaalon, Inc.

Protective Relay Oivislon 35 N. Snowdrift Road, Allentown. PA 18106 Telephone (215) 395-6888 FAX 215.395. I 055 Supersedes Issue 0 printed ln U.S.A. 0189

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Attachment No.

Job Cale No. /- -e-o/

o sht;~pf Rev. No.

~ ~

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CCC, YCC, Br, VCX CURRENT 5 VOLTAGE TRANSDUCERS

~ Used and Approved Worldwide

~

High Accuracy

~ Outstanding Overload and Performance 'emperature

~ Excellent Long-Term ~ r Stability CM gA 'aca " ' t

" ~

p Meets ANSI C37.90.1-1974 (IEEE SWC) and BEAMA No. 219 Tests

~ ~ Wide Selection of Input/

Output Ranges

~ Process Outputs (4-20 mA) 8 HIS va tttatt 0 tea

'ad<

4 aaattaa t 1 aaattatdaa The Rochester instrument Systems CCC isolating the input from the solid-state CCC. VCC and VCX transduccrs are Current Transducer and VCC 'Voltage output amplilier. housed in rugged drawn-steel enclosures Transducer arc compact instruments dc. vvith weldedwn mourning plates. The entire igned to accept an AC current or voltage Like all Rochester instrument Systems circuitry may be pulled by removing two mput'and provide a proponional OC transducers. these currcm and voltage umts easiiy-accessible screws without dismount-current output. The VCX Voltage Trans- incorporate statewf.the-art elearical and ing the enclosure from the paneL ducer isa'suppressed zero unn that provides mechamcal design. Only the highest quality the same tvpe oi output stgnaL These components. !atcst production techniques For more information on current and transducers are designed to respond to the and most advanced test equipment and voltage transducers. application assistance aierage value of the input signal. but all procedures are used in their rnanut'aaure. on a special prolea. or simply to place an mooels are calibrated to mdicate the rms of ul models are designed to mea the A.'tlSI order consult your nearest RiS Sales Office s pure sinusoid. All models are constructed Ss VC (surge wnhstand capabdityl test and or any of the faaory locations listed on the w nh an ultra. linear transformer input stage BEAlvtA Test No. 2l9. to assure reliable back page.

pertormance in the tield.

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Attachment No.

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FPL TURKEY POINT NUCLEAR PLANT TOTAL EQUIPMENT DATA BASE UNIT: 03 PAGE NO.

COMPONENT TAG 4t 30101 ASSOCt C04-VM DESCt 480 V LC A VOLTMETER SYSTEHt 480 VOLT SHITCHGEAR SYSTEM CODEt 006 LOCATION DESC+ CONTROL ROOM r VERTICAL PANEL LOCATION CODE t 360 STARTUP SYSTEM CODE)

RMPt N ISTt N SAFETY CLASSt NPRDS: Y QBASISt GEMS MAJOR CODEt EF52 GGROUPt GEMS MAJOR MFTRt HES QLEVELt GEHS ID CODEt EQ REGDt GEMS MINOR CODE: SCEHt GEMS MINOR MFTR t PCMt ACCOUNT CODEt 531 SPEERt N/A EQUIPMENT MFTR t WESTINGHOUSE ELECT i SURV HAINT NOTE t N/A MODEL NOt TYPEtVC-252~ STYLE:G-9589 DOC PAC: N/A SEISMIC CAT t ENGRG DAT* REFt HEAR PROTECTION t REMARVS'/A DRAHING NUMBER SHEET PURCHASE ORDERS 5610-E-28 13 5610-M-301 5610-E-5 1 PROCEDURES PROCEDURE TITLE AP 0190 i 28 POST MAINTENANCE TESTING Ofke~ /era.) c,p~4PP'5 4m~~ +" + 5R ~c lyly<

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March, 1976 Supersedes DB 43-252 dated August, 1972 E, D, C/2036/DB Westinghouse Electric Corporation Relay-Instrument Division, Newark, N.J. 07101 Type 252, 4'/a" Scale Length 1'/a% Accuracy 43-252 0 WE A Descriptive Bulletin "ge 'ttachment Edgewise Switchboard Instrument Job CI Sht.

N.

Rev. No.

~

~

NO, of Application Type 252 edgewise instruments were de-signed specifically for the nuclear power in-dustry for use on control panels. However, they are well suited to any use where high re-liabilityand efficient use of space are impor-tant considerations.

==1500 =800 These instruments incorporate into edgewise

=60 instruments the same taut. band suspension A system which is used in the highest quality Westinghouse portable and switchboard in-struments.

= 80' They are available in types for direct meas- =90 A

=600 urement of standard electrical quantities, or A in combination with transducers fpr measur- -=1000 0 .C.

ing any other electrical op mechanical quan- C W tity capable of being converted into a propor- E K tional electrical quantity. R A

Standards There is no published requirement in ANSI M

P F -100 "

I 400 C391-1972 for instruments of this type, how- E A W ever they specifically meet the switchboard R C A instrument requirements therein. The type 252 instruments meet the flamability re-E S 0 T = T T

quirements of IEEE Standard 420-1973 and they pass the seismic qualification tests  ::500  :-90 S under IEEE Standard 344-1971 (Rev. 5 dated 9-23~74)

Specifications Accuracy 1/a% of full scale de-80 LE A

=200 flection, horizontal or D

~I vertical; a 1'/o on spe-cial order

=0 m 60 =0 Waveform To 15% of third Compensation harmonic content Instantaneous Ac-35Times Rating Overload Capacity Dc-100 Times Rating Working Voltage 1200 volts dc, Vcrt kal Type <G tou pad) to Ground 800 volts ac ~

Shielding Magnetically shielded Scale Length 4.5 inches (11.43 cm)

Net Weight 1 i/a pounds Shipping Weight 2'/a pounds A-C AMPERES Ratings (Self-Contained) I I I I ( I I I I I I I I f I I I I I

I I I I / I I I I

)

I I I I / I I I I i

Dc: 20 microamperes to 50 amperes / )

50 millivoltsto 800 volts 0 5Q tQQ 150 200 Ac: 10 milliamperes to 20 amperes 5 volts to 600 volts Transducer-type frequency meters, varmet-ers, wattmetters. Hotfaonlal Type

f'i

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'43.252 D WE A Descriptive Bulletin Attachment No.

I (7 JOE Ol lN. O RBy. No.

Sht. 9 ot Construction Burden Characteristics at 60 Hertz All components are mounted on a plastic Burdens on Current Transformers at 5 Amps drawer which slides into a plastic case with 8 Instrument Impedance: Resistance: Reactance: Volt Amperes Percent clear, curved window. The entire assembly is Ratin Ohms Ohms Ohms Power Factor treated to be static free. The plastic is 5amp ~ .024 .013 .020 polycarbonate IASTM 0635) for impact strength and flame retardance. Burden on Potential Transformers at 120 Volts Instrument Volt. watts Vers Percent Mechanism Ratin Amperes Power Factor The dc instrument is of the permanent- 150uolts magnet moving-coil type in a core magnet construction. Lamps Lamp Type Volts Am ps For ac measurement the same mechanism is 8.3 0.25 used, but rectifiers and an rms network are added. This design permits the ac instrument to have a linear scale, to compensate for wave form distortion, and to be practically immune to the effects of magnetic fields from adjacent conductors regardless of their orien-tation.

Suspension All type 252 instruments use the Westing- ~

house perfected taut-band suspensions. In-struments incorporating this feature are iden-tified by the trademark~ The absence of friction in taut-band instruments creates the advantages of perfect repeatability, reduced tenance, and lower electrical burdens.

herent ruggedness of the design makes performer under adverse conditions ock or vibration. Fisure 1

'ials Outline and Panel Cutout Dimensions, In Inches (Centimeters)

Pointer edge and dial markings are on the same arc that there is no parallax error. TOO ta VertiCal

.695 50M I 1.068 8 tnttrumere (tat~ ((ZAI (2.71 (See Table)

Mounting /

Instruments may be stacked horizontally or I I

IA)00 (28) 2-28 Threaded vertically. Eight edgewise vertical instru- I I I I

I ments will occupy the same panel width as Ternnato(s three conventional instruments. Trim strips, furnished with each instrument, finish off the I

I I

I I

2 Qo-I I

I I

0 5.664 I t

,'teAI edge of each instrument or array. Dial cards 6035 7.04 8 I (tss) 5.695 may be interchanged to adapt from horizontal (129 I r

(

(ted) to vertical mounting or to change scales. I I

1.000 KM2 1

(ZN) (7.2)

I Modifications Available I I

Internal illumination with low-voltage lamp 1 I

and translucent dial.

Mounnrv) aroctet External rear illumination with clear-case and Avoitob(~ tor Assembly I I cu translucent dial. Avodobre for Multi.ronoe Internal Ilium(oaten Inslfumerus Ie Pone((y(t.s)Maximum)

Non-glare window 4100100 Figure 2 Dual scale or rating Mounting No. of Dimensions Straight fine tubular pointer Instruments Figure 1 shows the two bracket assemblies Offset, center, or suppressed zero and two trim strips which are supplied with 1.770 (4.3) 2.166 (5. 5)

Gasketed construction each 252 instrument. Figure 2 illustrates how 3.510 (8.9) 3.896 (9.9) these parts are used. 5.250 ((33) 5.620 (14.3) 6.990 (17.8) 7.356 (18,7)

Further Information Two trim strips are needed to trim either a 5 8.730 (22.2) 9.086 (23.1) s: Price List 43-200 single instrument or a stacked array. 6 10.470126.6) 10.816 (27.5) 12.210 (31.0) 12.546 (31.9)

tions: Instruction Leaflet 43-252 e 13.950 (35.4) 14.278 (36.3) sducers: Descriptive Bulletin 43.661

i I

SM'

Appendix A o o c

>C

~

OC

• MIRE. TABLE.

Res)stance - ohms/1000 ft R .N.~

Attachment No.

Job Gale No. ~'~~~-~~

Sht.~of~

-E-~

0 v vv STANDARD CLASS 8 ANNEALED COATED COPPER ANNEALED ALUHINN gac CONDUCTOR g a SIZE 25'C 55'C 90'C AMG or kcmtl a B CU AL CU AL CU AL pv C 0 g J) v 14 2.73 3.044 ~

3-41 c0 1.72 2.70 1.92 3.024 2.15 3.397 12 o~ 10 1.08 1.70 1.20 1.904 1.35 2.1394, QV 0.96 1.512 1.698h-9 0.857 1.35 1.071 cE 0.679 1.07 0.76 1.198 0.849 1.346k 3 I. 8 7 0.539 0.60 0.674 6 0.427 0.674 ,0.476 0.755 0.534 0.848 5 0.339 0.378 0.424 4 0.269 0.424 0.300 0.475 0.336 0.533 3 0.21 3 0.237 0.266 2 0.169 0.267 0.1884 0.299 0.211 0.336.

Ill g 1 0.134 0.211 0.149 0 236 0.168 0.265 ~

X uE 1/0 0.106 0.168 ,- 0.118 0.188 0.133 0.21 LU ~ 1'.167 to e 2/0 0.0843 0.133 0.094 0.149 0.1054 o 3/0 0.0668 0.105 0.0745 0.1176 0.0835 0.132 4/0 0.0525 0.0836 0.0585 0.0936 0.0656 0.105 Ks 250 0.0449 0.0708 0.05 0.0793 0.056 0.0891 Io 300 0 0374 0.0590 0.0417 0+0661 0.04675 0. 0742 350 0.0320 0.0505 0.0357 0.0566 0.04 0.0635 "8 400 0.0278 0.0442 0.031 0.0495 0.0348 0. 0556 500 0.0222 0.0354 0.02475 0.0396 0.0278 0.0445" 8$ 600 0.0187 0.0295 0.02085 0.033 0.0234 0.

037T'.0297 C 750 0.0148 O.OP36 ,0.0165 0.0264 0.0185 s'Q 1000 0 0111 0.0177 0.01238 0.0198 0.0139 0.0223

'R '8 For Other Temperatures:

RT ~ R25(234.5 + T) x 0.0038536 for Copper vB R25(228.1 + T) x 0..003951 for Alum)num E

0 j +Adapted from Okon)te Conductor Electrical Bulletin EHB-81, Engineering Data, Copper and Alumlnum-Cables, Tables 1>>3 and 1-4 NUMBER DG E 2.11.2.2 sHEa- I6 pF-PATE o8/oe/e3 BPC EP-22 (3-71)

p4 "t

I

((j

Qkonite Cables Section 1 General Conductor Information ac/dc Ratios determine effective 60-Hertz ac resistance, multiply dc resistance values

~'o corrected for proper temperature. by the ac/dc resistance ratio given below.

These apply to the following specific conditions.

~

Attachment No. Use Columns 1 and 2 for:

Job (a) Singteconductor non-metallic sheathed cables in air or non-metallic Calc No. ~ ~ -~ 3-~-o conduit.

Rev. No. o (b) Singtewonductor metallic-sheathed cables with sheaths insulated in air or separate non.metallic conduits.

Sht. of (c) Multipteeonductor non-metallic sheathed cables in air or non-metallic conduit.

NOTE: Columns 1 and 2 include skin effect only. For close spacing such as muttieonductor cables or several cables in the same conduit. there will be an additional apparent resistance due to proximity loss.

This varies with spacing (insulation thickness) but for most purposes can be neglected without serious error.

Use Column 3 for:

(a) Multiptewonductor metallic-sheathed cable.

(b) Multiplewonductor non-metallic sheathed cables in metal conduit (c) Two or more singte~onductor non-metallic sheathed cables in same metallic conduit. ~

ac/dc resistance ratios for copper and aluminum conductors 60 Hertz [65C) ~ ~ Table 1-5 1 2 3 .

Conductor Standard Conductor Se mental Condu'ctor All Strandings Size AWG or kcmtt Copper Aluminum Copper Aluminum Copper Aluminum Up to 3 1.000 1.000 1.00 1.00 Zand 1 1.000 1.000 1.01 1.00 0 1.001 1.000 1.02 1.00 00 1.001 1.001 1.03 1.00 000 1.002 1.001 1.04 1.01 0000 1.004 1.001 1.05 1.01 250 1.005 1.002 1.06 1.02 300 1.006 1.003 1.07 1.02 350 1.009 1.004 1.08 1.03 400 1.011 1.005 1.10 1.04 500 1.018 1.007 1.13 1.06 600 1.025 1.010. 1.16 1.08 700 1.034 1.013 1.19 1.11 750 1.039 1.015 1.21 1.12 800 1.044 1.017 1.14 1000 1.067 1.026 1.010 1.005 1.19 1250 1.102 1.040 1.018 1.008 . 1.27 1500 1.142 1.058 1.028 1.012 1750 1.185 1.079 1.038 1.016 2000 1.233 1.100 1.052 1.020 2500 1.326 1.142 1.078 1.028

Okonite Cables Section 3 Voltage JOb

~

.X.~

Attachment No.

Calc No.

~

Sht.

I- 5a egu ation

>~

d g - E-o I Reactance of conductors at 60 Hz (Series inductive reactance to neutral) Table 3-1 SIZE BASEDON FORMU'LA CENTER T0 CENTER CO NDUCTOR s SPACING BETWEEN DIA. IN AWG Or kcmll x = 2trl(0.1404 logPE r +0.0153) X 10 CONDU CTORS INCHES INCHES 0 x = Reactancewhms/1000'

~

2.0 = Frequency

.05 1.8 r = Radiusof Conductor 2000 s = Center to Centerspaclng .06 1.6 1?50 between conductors 1.4 1500 ECUIVALENT SPACING I .08 0 0 0 1000'TRANDED 1250 ~ = fyAX SXC .10 1.2 1000 Equilateral Triangle -S- Es A Right Angle Triangle S 1.123 A 1.0 Symmetrical Flat "S" = 1.26A .15 600 Cradle "S" = 1.15A EP REAC TANCE 500 4oo . OHMIF

.25 350 300 .30 250 01

.40 0000

.5 02 .50 000 000 00 03 4

0

.04

~X 1

0 .~05 COhhECTIONSPOh 1 MULTI%ONOUCTOII CAbLES 2 Condr Non Mscnsdo Mscnobo o6

/ alndor alndol 15 kent il noLNLd soclor nound socsoE .07 4 ~ Up to Mvnlplrlnd FECtoE

.18 .08 2.5 250 1.000 .975 1.149 1.230

.16 300 1.000 .970 1.146 1.225 3.0 350 1.000 .985 1.140 1.220 .09

.14 400 1.000 .960 1.134 1.218

.10 4.0 8 500 1.000 .950 1.122 1.208

.Ig 800 1.000 .940 1.1 1 1 1.199 5.0 700 1.000 .930 1.100 1.191 10 ?50 1.000 .925 1.095 1.188 6.0 0

12 8.0 SINGLE CONOUCTORS 12 IN CONOUIT .13 10.0 14 Non Magnetic-Increase 207P lor random lay .14 14

'agnetic-Increase StyA for mag-netic etfect and randoni Iay .15 15 16 MULTIPLE CONOUCTOR CABLES IN CONOUIT 20 16 Non-Magnetic-No Correction 18 Magnetic-Use Value for Round Con- 25 ductors with Magnetic Binder .17

.04-18 EXAMPLE: 30 find Reactance of 3-1 Condr 750 kcmil Cables In Magnetic Conduit .18 Cable O.O. = 2.00" Une from 750 40 20 kcmil x = 0.038 Correction for Mag- .19

.03 netic Conduit = I.50 Reactance = 50 0.057 OHMS/1000 60 22

.21

.02 2