ML17349A249
| ML17349A249 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/27/1992 |
| From: | Larsen R BECHTEL CORP. |
| To: | |
| Shared Package | |
| ML17349A248 | List: |
| 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
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CALCULATIONCOVER SHEET PROJECTTurkey Point Units 3 and 4 SUBJECTUnit 3 Load Centers Undervoltage Relay Set Points JOB NQ 21701-523 CALQ NQ 21701-523-E-01 SHEET 1
TOTALko OF SHEEIS lAST SHEET kc 27 27 DISCIPUNE Electrical CALCULATION STATUS DESIGNATION PREUMINARY COMMITTED CONFIRMED C2 SUPERSEDED CANCELED COMPUTER PROGRAM NCP NONE PROGRAM NO.(S)
VERSCN/RELEASE NQ Table of Contents Sheet I.
Purpose/Objective II.
Bases/Assumptions III.
References IV.
Analytical Calculation V.
Conclusion 3
/
4 23 A
endices 1.
Relay Setting Curves (4 sheets)
Attachments 1.
2.
3.
4.
5.
6.
7.
8.
9.
Maintenance and test equipment inaccuracies (6 sheets)
ITE 27N tolerances and burden values (3 sheets)
IAV-55C tolerances, burden values and time-voltage curves
('p sheets)
ITE Potential Transformer Accuracies (5 sheets)
IAV-53K Undervoltage Relay Burden Values (3 sheets)
ITE-27H Undervoltage Relay Burden Values (2 sheets)
Voltage Transducer Burden Values (3 sheets)
Voltmeter Burden Values (3 sheets)
Cable Impedance Values (3 sheets)
~
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ka Issued for Use By REVISIONS Z7 3/~~
Approved Date QA.2704 Rev. 12/89 IED 21)
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CALCULATION SHEET JOB NO.
21701-523 ORIGINATOR CALO. NO.
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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 2.2 The undervoltage relay set points will be based on the Technical Specification required setpoints (Reference 3.1).
C 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.
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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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DATE 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):
Load C nter Trip
~~in 424 i SV (60 sec Z 30 sec delay) 120V Trip point **
106 i 1.25V (60 sec Z 30 sec delay) 3B 427 g SV (60 sec g 30 sec delay) 106.75 g 1.25V (60 sec
~ 30 sec delay) 3C 3D 437 g SV (60 sec i 30 sec delay) 435 i 5V (60 sec t 30 sec delay) 109. 25 30 108.75 g 30 1.25V (60 sec sec delay) 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) 3A 4.2 Additional Setpoint Verifications Attachment 6:
(Steady State)
Verify relay will not 111.25V +0,
-1 based on Reference 3.2, (Transient)
Verify relay will not operate in even ec nds at.
- 92.25V +0,
-1 3B 3C 113.25V +0,
-1
- 110.50V +0,
-1
- 96.25V +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:
Load Center 3A 3B 3C 3D Trip Ssetsoint 106V 106. 75V 109.25V 108. 75V 4.4 Test'Equipment Inaccuracies:
(See Attachment 1)
Since the voltage margin between the Technical Specifications the setpoint verification values is minimal, the best test equipment available must be used, i.e., the HP 34401A.
and 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.01% of RDG i 3 LSD (with P-2010 attachment)
Notes:
The 100V range scale will be used for the HP voltmeter.
At this range scale, the maximum reading is 120.0000V (see ).
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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 i.01V.
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 ZTB-27H Relay ZAV55C Relay ZTB-27N Relay VCC Volt XDCR VCC-252 Voltmeter 17.0 VA (worst case) 1.2 VA 21.6 VA (worst case)
.096 VA Attachment 5
Attachment 6
Attachment 3
Attachment 2
Attachment 7
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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0 JOB NO.
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DATE 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
//
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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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%
~l 25 - 2.025% x tap setting
-.25 > tap setting 1.1 100.886 > (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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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 15'*
\\
IAV Based on References 3.12 and 3.13, all conductors are
¹12 AWG wires.
LEGEND'TC
- Test switch
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0 11 DATE Z7 9Z Cable length was based on the (worst case) conduit length from Reference 3.12 in addition to a tail length of 5't each end of the cable.
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:
1.1 x ~120 x [.00416 x 65' 2 +.053 x 65'
.00416 x 65'from 1000'pposite channel)]
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. 009V 4.8.2 V~~ for IAV:
For conservatism ~V will be used.
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 (Per Sections 4.3 and 4.6.1)
Inaccuracies-106 x +.399%
+.423V Min Steady State Voltage - 111.25V, (Per Section 4.2)
.423V
.1V I-I 105.477V
.1V I
106V
.423V I
I 106.523V I
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 Inaccuracies-106.75 x +.399% - +.426V Min Steady State Voltage - 113.25V
.426V 106.224V
.1V
.1V
.426V I
I I
I 106.75V 107.276V 113.24V Tech Specs.
1.25V I-105.50V 106.75V 1.25V I
108V
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Setpoint - 109.25 +.1V Inaccuracies-109.25 x +.399%
+.436V Min Steady State Voltage - 110.50V
.436V
.1V
.1V
.436V 110.49V I--------I-I I---------I I
108 '14V 109.25V 109.786V Tech Specs.
1.25V 108V 109.25V 1.25V I
110.50V LC 3D:
Setpoint - 108.75 +.1V Inaccuracies-108.75 x +
.399% - +.434V Min. Steady State Voltage - 110.50V
.1V I-108.216V Tech Specs.
I 107.50V 1.25V 108.75V 108.75V
.434V
.1V
.434V I
---I 109.284V 1.25V I
110.0V 110.49V I
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 I
Set<<~
.444V 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:
/I Min. Steady State Voltage
- V,~ - 110.49V Max. Dropout Voltage 109.786V Inaccuracies - 110.49 x +.399% - +.441V
,441V I -----------I 109 '86V 110.227V
.441V I -----------I 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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0 15 DATE Based on Section 4.9.1, the max. dropout setting will be:
.436V
.1V
.1V I-----------I-I 108.327V 108.863V
.436V I
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 I -----------I--
108.314V
.1V
.436V
I-------- I----------
I 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 3C&3D 6 98.19V 100.50V 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
- V~~ - 96.23V Tap setting - 100.5V 96,23/100.50 95 '% of tap
/
- 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.
- ev.
0
JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV. No.
SHEET NO.
0 17 ORIG INATOR 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
% of Tap Min.
Voltage Range Mid.
Max.
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
86.85V-77.20V 67.55V
. 57. 90V 48.25V 38.60V 28.95V 19.80V 9.659 OV 88.88V 79.00V 69.13V 59 '5V 49.38V 39.50V 29.63V 19.75V 9.88V OV 90.90V 80.80V 70.70V 60.60V 50.50V 40.40V 30.30V 70.20V 10.10V 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%
80%
70%
60%
13.70 sec
.23%
8.00 sec
.39%
5.70 sec
.54%
4.45 sec'68%
+ 4.01%
+ 4.02%
+ 4.04%
+ 4.06%
+ 1.05 sec
+
.82 sec
+
,73 sec
+
.68 sec
~
eVe
ry c'g
e JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV. NO.
SHEET NO.
0 18 ORIGINATOR DATE CHECKED DATE 50%
40'0'0'0'a 3.75 sec
.81%
3.40 sec
.89%
3.19 sec
.95%
3.03 sec 1.00%
2.98 sec 1.02%
2.93 sec 1.03%
+ 4.08' 4.10' 4.11' 4.12@
+ 4.13' 4.13@
.65 sec
.64 sec
.63 sec
.62 sec
.62 sec
.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 0 of Tap 90'0%
70'0'0$
40'0$
20'0'a Min."
88.39V 78.57V.
68.75V 58.93V 49.11V 39.29V 29.46V 19 '4V 9.82V OV Voltage Range Mid.
90.45V 80.40V 70.35V 60.30V 50.25V 40.20V 30.15V 20.10V 10.05V OV Max.
92.50V 82.22V, 71.94V 61.66V 51.38V 41.10V 30.83V 20.55V 10.27V 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 ~
~ II
,t
JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV.
NO.
SHEET NO.
0 19 ORIGINATOR DATE CHECKED DATE 0 of Tap Min.
Voltage Range Mid.
Max.
90'0%
70'0'0%
40%
30'0@
10'a 86.19V 76.61V 67.04V 57.46V 47.88V 38.31V 28.73V 19.15V 9.58V OV 88.20V 78.40V 68.60V 58.80V 49.00V 39.20V 29.40V 19.60V 9.80V OV 90.21V 80.19V 70.16V 60.14V 50.12V 40.09V 30.07V 20.05V 10.02V 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 I-I 96.523V
-l 98.75V 25V 1.977V I
I 100.977V To make the checking easier, whole numbers will be used for the check points.
k'<-
S 1I l
JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV. NO.
SHEET NO.
0 20 ORIGINATOR DATE CHECKED DATE 0 of Tap Voltage Range Min.
Mid.
Max.
85.06%
69.87%
30.38%
82.106V 67.444V 29.323V 84.00V 69.00V 30.00V 85.894V 70.556V 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%
69.87$
30.38%
10.35 sec.
5.70 sec.
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.
k I
JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV.
NO ~
SHEET NO.
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%
69.87%
30.38$
84 + 1.81V 69 + 1.48V 30 +.62V 10,35 +.91 sec.
5.70 +.73 sec.
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 I
-I 102.762V 98.238V 100.50V I
Voltage Range Min.
Mid.
0 of Tap Max.
2.012V
.25V
.25V I-I I
84.58%
69.65%
29.85'3.087V 85.00V 68.424V 70.00V 29.325V 30.00V 86.913V 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; 0 of Tap 84.58$
69.65'9.85'ime (per Attach 3) 10.10 sec.
5.60 sec.
3.17 sec.
Total Time Band *
+.90 sec.
+.72 sec.
+.63 sec.
- Based on the same method used for LC 3A.
- ev.
Ag n
I
,Pe
JOB NO.
21701-523 CALCULATION SHEET CALO. NO.
21701-523-E-01 REV. NO.
SHEET NO.
0 22 ORIGINATOR
-R..
DATE CHECKED DATE 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 8 of Tap 84.69'0.41%
29.59'in.
81.127V 67.443V 28.345V Voltage Range Mid.
Max.
83.00V 84.873V 69.00V 70.557V 29.00V 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:
0 of Tap Time Total (per Attach 3)
Time Band
- 84.69%
70.41%
29.59%
10.20 sec.
5.75 sec.
3.15 sec.
+.91 sec.
+.73 sec.
+.63 sec.
- Based on the same method used for LC 3A.
- ev.
a E
I
'(
I t,
JOB NO.
21701-523 ORIGINATOR CALCULATION SHEET CALO. NO.
21701-523-E-01 DATE CHECKED
> ~>)
REV. NO.
SHEET NO.
0 23 DATE 5.0 nclusions'ased on the above calculations the following setpoints have been determined:
Relay Set Points:
LC 3A:
~ERela Pickup Tap set to 108.89
+ 1.9V Dropout Tap set to 106 +.1V 60 +.5 sec time delay
~IAV Re a
Tap set to 98.75 +.25V Time Dial set to 5
LC 3B:
~T1~Re~a Pickup Tap set to 110.26
+ 2.5V Dropout Tap set to 106.75
+.1V 60 +.5 sec time delay LC 3C:
IAV~RE Tap set to 100.50V +.25V Time dial set to 5
~IT Rela Pickup Tap set to 109.94 +.1V Dropout Tap set to 108.85
+.1V 60 +,5 sec time delay LC3D'IAV Rela Tap set to 98.00V +.25V Time dial set to 5 LXFM~
Pickup Tap set to 109,89
+.15V Dropout Tap set to 108.75 +.1V 60 +.5 sec time delay
~Vh~a Tap set to 98.00V +.25V Time dial set to 5
- ev.
V
CALCULATION SHEET JOB NO.
21701-523 CALO. NO.
21701-523-E-01 DATE CHECKED REV. NO.
SHEET NO.
0 24 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 F 00 + 1.83V 70.00 + 1.50V 30.00 +.62V 10.10 +.90 sec.
5.60 +.72 sec.
3.17 +.63 sec.
3C & 3D 83.00 + 1.79V 69.00 + 1.48V 29.00 +.60V 10.20 +.91 sec.
5.75 +.73 sec.
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.
~ ev.
t E,
ibad I
~l 1
Iy pp I I J 5j
CALCULATION SHEET JOB NO ~
21701-523 ORIGINATOR CALC. NO.
21701-523-E-01
>5)
REV. NO.
SHEET NO.
0 25 OATE 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.
21701-523 ORIGINATOR CALO. NO.
21701-523-E-01 DATE CHECKED REV. NO.
SHEET NO.
0 26 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.
21701-523 CALO. NO+
21701-523-E-01 REV. NO.
SHEET No.
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.
i
JOB NO.
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P.O.Box l4000, Juno Beach, Ft. 33408 0420 JPN-PTN-91-1011 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:
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 t
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 File Room Copy R. S. Kundalkar M. Pearce M. Powers L. J. McCullough S. J.
Pleasure PEG/PBG JPN/JB JPNS/PTN PTN/PLT PTN/PLT JNE/JB 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 FROM:
Michael E.
Powers DATEi December 13, 1991 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. It has the following specifications associated with it:
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 AttaChment No.
tl Sht.
Ot~
January 13, 1992 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~~~~
<l
%p 1
4
'1 a
1 I
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~
1)
Enclosure to N-92-0011 Pa e
3 of 5 Conference Notes No.92-001 Attachment No.
Job Ot N.
Rev. No.
O Sot. ~ of A question was brought up at this time; by what increments can the voltage source be adjusted.
After looking at the voltage source, at the 150V scale, the voltage can be 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.
I 4
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'll e
ACCuraCy SPeCifiCatiOnS *tVo Of reading+'lo Of range) I>>
Attaenrnefit hfo.
JOb
/ Z /-Sa CBlC tfO.
RPr. No.
o Sht.
o of unction DC Voltage TrueRMS AC Voftagef" Range"'00.0000 mV 1.000000 V 1LMONV 10L0000 V 1000NO V 100.0000 mV 1.000000 V to l750.000 V Frequency, etc.
3Hz-SHz 5Hz-10Hz 10Hz-20kHt 20 kHz ~ 50 kHz 50 kHz - 100 kHz 100 kHz - 300 kHz lsl 3Hz-SHz SHz-laHt 10 Hz ~ 20 kHz 20kHz-50kHz 50 kHz - 100 kHzlsl 100 kHz -300 kHzfsl 24 Hour lzl 23'C R1'C L0030+ ON30 0.0020+ 0.0006 NNIS+ ANNI 0.0020+ 0.0006 0.002D+ 0.0006 1.00+ 0.03 0.35 o 0.03 0.04+ 0.03 0.10+ 0.05 O.SS+ 0.08 4.00+ 0.50 1.00+ 0.02 035+ 0.02 0.04+ 0.02 O.ID+ 0.04 0.55+ 0.08 4.00+ 0.50 90 Oay 23'C 25'C 0.0040+ 0.0035 ON30+ 0.0007 LOO20+ AINS 0.0035+ 0.0006 0.0035+ 0.0010 1.00+ 0.04 035+ 0.04 0.05+ 0.04 0.11+ 0.05 0.60+ 0.08 4.00+ 0.50 1.00+ 0.03 035+ 0.03 0.05+ 0.03 0.11+ 0.05 0.60 ~ 0.08 4.00+ 0.50 1 Year 23'C+ 5'C 0.0050+ 0.0035 L0040+ 0.0007 NN35+ AN5 ONIS+ 0.0006 0.0045+ 0.0010 1.00+ 0.04 0.35+ 0.04 0.06+ 0.04
, 0.12+ 0.04 0.60+ 0.08 4.00+ 0.50 1.00+ 0.03 035+ 0.03 0.06+ 0.03 0.12+ 0.05 0.60+ 0.08 4.00+ 0.50 Temperature Coefficient O'C -18'C 28oC 55oC 0.0005+ 0.0005 0.0005+ 0.0001 LON5+ LO001 0.0005+ 0.0001 0.0005+ 0.0001 0.100+ 0.004 0.035+ 0.004 0.005+ 0,004 0.011+ 0.005 0.060+ 0.008 0.20+ 0.02 0.100+ ON3 0.035+ ON3 0.005+ DN3 0.011+ 0.005 0.060+ 0.008 0.20+ 0.02 IOLNXNQ 1.000000 kQ 1NXONkQ 100.0000 kQ 1.000000 MQ 10.00000 MQ 100.0000 MQ 1 mA Current Source 1 mA lao pA 10 ItA "S.0pA 500 nA 500 nA//10MQ L0030+ L0030 ON20+ 0.0005 LN2O+ NO5 ON20+ 0.0005 L002+ 0.001 0.015+ ONI 035+ 0.010 0.008+ DNI ONB+ 0.001 NXI+Loot LIN8+DNI LIN8+ONI a020+ O.OOI 0.800+ 0.010 0.010+ 0.004 0.010+ 0.001 Agtg+ Loot 0,010+ ONI 0,010+ 0.001 0.040+ ONI ONO+ 0.010 0.0006+ 0.0005 0.0006+ 0.0001 NXN6+ Aggot 0.0006+ 0.0001 0.0010+ 0.0002 0.0030+ 0.0004 0.1500+ 0.0002 DC Current 10.00000 mA 100.0000 mA 1.000000 A 3.00000 A
<0.1 V Surden Voltage
<0.6 V
<1V
<2V ON5+ 0.010 0.010+ 0.004 0.050+ 0.006x
'.100+
0.020 0.030+ 0.020 0.030+ 0.005 0.080+ 0.010 0.120+ 0.020 0,050+ 0.020 0.050+ 0.005 0.100+ 0.010 0.120+ 0.020 o 0.002+ 0.0020 0.002+ 0.0005 0.005+ 0.0010 0.005+ 0.0020 True RMS AC Currenti'1 1NIÃXNA 3.00XOA 3Hz-SHz 5 Hz ~ 10 Hz 10 Hz-5 kHz 3Hz-5Hz 5 Hz ~ 10 Hz 10Hz-5kHz 1.00+ O.ol 030+ 0.04 Ala+ LOI 1.10+ 0.06 035+ 0.06 0.15+ 0.06 1.00+ 0.04 030+ 0.04 Ala+L04 1.10+ 0.06 035+ 0.06 0.15+ 0.06 1.00+ O.ol am+ Lol Ala+ AOI 1.10+ 0.06 035+ 0.06 0.15+ 0.06 0.100+ 0.006 0.035+ 0.006 AOIS+ NXN 0.100+ 0.006 0.035+ 0.006 0.015+ 0.006 Frequency or Periodl" 100 mV 10 750 V 3Hz ~ 5Ht 5 Ht ~ 10 Hz 10Hz-40Hz 40 Hz - 300 kHt 0.10 0.05 0.03 0.006 0.10 0.05 0.03 O.at 0.10 0.05 0.03 0.01 0.005 0.005 0.001 ONt Diode Test 1000.0Q 1 mATest Current 1.0000V 1 mATest Current 0.002+ 0.010 0.002+ 0.010 0.008+ 0.020 0.008+ 0.020 0.010+ 0.020 0.010+ 0.020 0.001 + 0.002 0.001+ ON2 es aaoaaaa ee DDOODOD 254.4 mm ee ee DDDDDDD 0 D ODD DD
212,6 mm tgs.emm 8
se 37I.Om 18 ea.smm tape
- Kll, 34S.3mm I'I Specifications are for Ihr warm up and 6rrt digits. Slow ac fitter.
Itl Relative to calibration standards.
Dl 20% over range on all ranges except 1000Vdc and 750Vac ranges.
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 Typically30% of reading error at 1MHz.
frf Specifications are for4 wire ohms function or 2 wire ohms using Math Nulb 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.
lI
iLtllk f%INlN ASEA BROWN 8OVERI IB 7.4.1.7-7 Issue D
Attachme.'~t k!c.
Jpb 4/-533 Cl M.
RBv. Np.
S!!!.
I afI N STRUCT ION S Single Phase Voltage Relays Type 27N HIGH ACCURACY UNDERVOLTAGE RELAY Type 59N HIGH ACCURACY OVERVOLTAGE RELAY Type 27N Type 27N Type 59N Type 59N Catalog Series 211T Catalog Series 411T Catalog Series 211U Catalog Series 411U Standard Case Test Case Standard Case 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 y Q Hl 0 (0II ME'NV ON 0 4W f
SW F ceo Coeel
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+v it get.
it out ompromise.
1 J I I
Single-Phase Voltage Relays IB 7. 4
~
1
~ 7-7 Page 5
SPECIFICATIONS Input Circuit:
Rating:
type 27N type 59N 150v maximum continuous.
160v maximum continuous.
Burden:
less than 0.5 VA at 120 vac.
Frequency:
50/60 Hz.
@~AC(lrnent NO.
JDb a" oi-'S y
Gal(l No.
>j/o -
-e-o c Rev. No.
o Ghi a
p(,p Taps:
available models include:
Type 27N:
pickup 60, 70, dropout-60, 30, 70, 80) 80, 90) 70i 80t 40, 50, 90,
- 100, 110 volts.
- 100, 110, 120 volts.
90, 99 percent of pickup'0 percent of pickup.
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 30 amps.
5 amps.
3 amps 2 amps.
O 125 vdc 30 amps.
5 amps.
1 amp.
0.3 amp.
e 250 vdc 30 amps.
5 amps.
0.3 amp.
0.1 amp.
tripping duty.
continuous.
break, resistive.
break; inductive.
Operating Temperature Range:
-30 to +70 deg.
C.
Control Power:
Models available for 48/125 vdc O 0.05 A max.
48/110 vdc o 0.05 A max.
220 vdc e 0.05 A max.
250 vdc O 0.05 A max.
Allowable variation:
48 vdc nominal 38-58 vdc 110 vdc 88-125 vdc 125 vdc 100-140 vdc 220 vdc 176-246 vdc 250 vdc 200-280 vdc Tolerances:
(without harmonic fjlter option, after 10 minute warm-up)
/'ickup and dropout settings with respect to printed dial markings (factory calibration)
-" +/- 2X.
Pickup and dropout settings, repeatability at constant temperature and constant control voltage
= +/- O.is.
(see note below)
Pickup and dropout settings, repeatability over "allowable" dc control power range:
+/- O.is.
(see note below)
Pickup and dropout settings, repeatablility over temperature range:
-20 to +55oC
+/- 0.4X
-20 to +70oC
+/-0,7x
~
0 to +agog e/-
0 2%
(see note below)
N t ths three tolerances shown should be considered independent and o e:
e may be cumulative.
Tolerances assume pure sine wave input sign al.
Time Delay:
Instantaneous models:
3 cycles or less.
Definite time models:
+/- 10 percent or +/-20 millisecs.
whichever is greater.
Harmonic Filter:
(optional)
All ratings are the same except:
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:
Seismic Capability:
2000 vac, 50/60 Hz.,
60 seconds, all circuits to ground.
More than 6g ZPA biaxial broadband multifrequency vibration without damage or malfunction.
I,
ASEA BROWN BOVERI Attachment No.
Job CI N.
Rev. No.
Sht.
Of Addendum to IB 7.4. 1.7-7(D)
INSTRUCTIONS High-Accuracy Undervol tage Relay INTRODUCTI 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 form 411T5.",>>:; or 411T7::>>::.
TINING CHARACTERISTIC The time-voltage char acteristic 8 of the main instruction book, time-dial selection as follows:
Time.Dial Tap Pin Position is definite-time as shown on page with the time-del ay val ues ver st'ts Nominal Delay-Time Seconds 411T5>>::>:
411T7>>::>:
¹ 1
¹ 2
¹ 3
¹ 4
¹ 5
¹ 6 2 seconds 4
6 10 14 H70 10 seconds 20 30 50 70 100 CATALOG NUMBERS and CHARACTERISTICS Type Pickup Range Dropout Range Ti me Del ay Pickup Dl opout Catalog No.
27N 60-110v 70-120v 70-9'? /
70-?'?/
Inst Inst 2-20sec 2-20aec 41 1 T5175 411T53?5 60-110v 70-120v 70-'?'? /
70-9'? /
inst 10-100aec 41 1 T?175 Inst 10=100sec 411T?>75 Catalog numbers shown are for 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
~ t 1
I I'
2i' j
'4
'I'
GEH-'1 768E INSTRUCTIONS Attache
>en'. Ai>.
Job r ale No Reu=>
Rev. No.
Sht I
of7 UNDERVOLTAGE RELAYS TYPES IAV54E IAV55C IAV54P IAV55P IAV54H IAV55H IAV55J
+.'GENKRhK EIEClRICi'.~
t l'F
'NITCHtslNKIIOaO eC
<<0>'q'E Meter and Control 205 Great Valley Parkway Malvern, PA 19355-0715
k t
GEH-1768 MOUNTING The relay should be mounted on a vertical drilling dimensions are shown in Figure 12.
8t""hn'Ien'
~.
3 JOIi CalC N0.
RBV. MQ.
O Sht. ~
p~
surface.
The outline and panel-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.
- 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 t
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.
4 (g
/
P)
II I
1
GEH-1768 At./chal fQpqt-gtg.
Job I-ot3 Caic No.
-E-0/
Rev. No.2= of.
~e 7
r
- l0 8
6 2
Q LiI Pigure 2 (0362A0618-2) Time-Voltage Curves for Type ZAV54E and ZAV55C Relays Revised since last issue 10
k'cl
PO Boxla000 Juno Beach F< 33gg 0a~
FPL JPN-PTN-92-5122 Bechtel Power Corporation NorthCorp Center, Suite 5001 3950 RCA Boulevard Palm Beach Gardens, Florida 33410 MAR ) 0 1992 Attn:
Mr. R.
E. Gallagher, Project Manager TURXEY POINT UNITS 3 6 4
480V UNDERVOLThGE SCHE3K MODIFICATION I/S MOD: 1341; REh NO:
TPN 87-015 PC/M: 91-128; TOP 20 ITEM ll FILE NO:
PC/M 91-128 Attachment No Job l70-Calc No.
d - s
-e Rev. No.
Sht.~of ~~
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 ques
- ons, p ease questions please contact Roy A. Bleeker at (407) 775-6077.
Ver truly yours, P.
C.
iggins PTN P duction Engineering Manager PC P.:hark Enclosure AtfaChment go 3
Job 5
3 Cele hto.
i or-sy Rev. No.
Sht.
s of CC:
P.
W.
R. A.
C.
M.
J.
A.
M. C.
FILE:
Black Bleeker Douglas w/encl Porter Weeks PTN-OSM-92-05 PEG/RCA PEG/RCA PEG/RCA JPNS/PLT PEG/RCA
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 ATTN.:
Mr. W.J. Harzis Attachment No.
Job o -5~>
Calc No.
/~~s-s'ev.
No.
o Sht.~ ot~
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 the factory tap settings have not been disturbed.
If 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
V g) 1
.i D
S>>
I, k
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 Rela Ta Settin s
115V 230V 460V Rated
'At Rated Volta e Coil Coil Coil Fre uenc Volt-am s Power Factor Watts IAV54E &
IAV55C (Burdens for IAV54F & IAV55F are approxi-mately 60% of these values) 140 280 560 120 240 480 105 210 420 93 186 372 82 164 328 70 140 280 64 128 256 55 110 220 60 60 60 60 60 60 60 60 3.0 4.0 5.2 6.8 8.9 12.4 15.1 21.6 0.26
- 0. 26 0.26 0.28 0.28 0.29 0.30 0.31 0.78 1.0 1.4 1.9 2.5 3.6 4.5 6.7 (Burdens for IAV54H & IAV55H
& IAV54J are approxi-mately 40% of these values) 140 280 560 120 240 480 50 50 105 210 420 50 93 186 372
'50 82 164 328 r 50 70 140 280 50 64 128 256 50 55 110 220 50 2.5 3.3 4.3 5.7 7.4 10.3 12.6 18.0 0.28 0.28
- 0. 28
- 0. 28 0.28 0.29 0.30 0.31 0.70 0.92 1.2 1.6 2.1 3.0 3.8 5.6 140 280 560 25 120 240 480
'5 105 210 420 25 93 186 372 25 82 164 328 25 70 140 280 25 64 128 256 25 55 110 220 25 2.3 3.1 4.0 5.2 6.8 9.5 11.6 16.5 0.26 0.26 0.27 0.28 0.28 0.30 0.30 0.31 0.60 0.81 1.1 1.5 1.9 2.8 3.5 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
Ng
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BBC 8ROWN BOVERI Attachment No.
Jpb 4'-
Caic Np I7 -s
-E-o I Rev. Np, o
Sht.~ of~
Section.3.6.4.1 Page 1
Effective October 16, 1980 September 18, 1981 Descriptive Information POTENTIAL TRANSFORNIERS 240 TO 600 PRIMARY VOLTS INSULATION, CLASS0.6 KV50/60 HERT2 TYPE PT-6 DESCRIPTION The I-T-E Instrument Transformers are designed to the high accuracy required to meet present day metering problems.
These transformers conform to the accuracy for meter-ing as established in the standard set up for the potential transformers by the American Standards Association.
These transformers utilize the wound-core construction well known for its excellent magnetic properties.
The highest grade of oriented-grain silicon stebl is used and annealing is done in a carefully controlled atmosphere in order to minimize core losses.
Controlled reactance is employed to minimize ratio and'hase angle errors, and is accomplished by a precision wind-ing technique. A machlrie especially designed for toroidal winding is used for winding both primary and secondary coils. The result is exceptional uniformity of performance.
The windings are vacuum impregnated with a polymeriz-ing varnish to protect against winding damage due to moisture and vibration.
Additional protection against vibration damage is provided by the use of neoprene cushions.
For net price multiplierand 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 Printed ln US.A.
CMC Brown Boveri Electric
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0ktrlbutfon Apparatus Dlvhlon W. Columbia, Sc 29189 Supersedes Section 163.4$ 'age 1, dated November 14, 1980 Printed ln USA.
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Rev. No.
o Sht.~ 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 Letter No. V-91-062 e
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.
ABBpower Oiatretutjon Ino, 5444 Bay CAnter Orna Room 123 Tarroa. F t. 33609 3402 Teteot tone.'t3286 Te59 Tetelex; 8'l3 286.1285
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INSTRUCTIONS Attachment No.
Job CalcNo.
4'i- > - -<
Aev. No.
Sht.~
of GEIH814F Supersedes GEH-1814E VOLTAGERELAYS TYPES IAV51A IAV52A IAV$3A IAV53B IAV$3C IAV$3D IAV53K IAV53L IAV53M IAV53N I
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'4 GENERAL
ELECTRIC
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RELAY TYPES GEH-1814 TABLE III (Con't.)
VOLTAGE TAP **
VOLT-POWER RATING SETTING AMPS FACTOR 25 - CYCLE BURDENS (Con't.)
AttaChment fVO.
not -sa ol II
. eoeoe."
ReV. NO.
O Sht.
of IAV53A 5
IAV538 IAV53C 115 115 140 120 105 93 82 70 64 55 NO TAPS 1.7 "13.3 2.9 4.2 5.3 7.5 9.5 12.9 4.2 0.32 0.30 0.30 0.30 0.32 0.34 0.34 0.39 0.38 0.5 0.7 0.9 1.3 1.7 2.6 3.3 5.0 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 it has a shorter time curve.
Time-voltage characteristics are shown in Fig. 14.
~ The Type tAV53K ts stmtter to the Type 1AV53A, tAV53L to tAV535, tAV53M to tAV53c eod 1AV53M tolAV530.
All four relays are in 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 of the breaker if the connecting plugs are removed and subsequently reinserted with the relay in the reset posit1on, 1.ceo circuit opening contacts closed.
Insert1on of eithe'r plug causes the relay to pick up; both plugs must be 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
REPRESENTATIVE GEH-1814 arious relay types are given in Table III.
TABLE III Alachnlent No.
Job u/- g Cafe No.
e -s Rev. No.
o Sht.~ of~
RELAY VOLTAGE TYPES RATING TAP ~>>
SETTING VOLT-AMPS POWER FACTOR WATTS 60 - CYCLE BURDENS IAV51A IAV52A
- IAV53A, IAV53B, IAV53D IAV53C 115 115 115 140 120 105 93 82 70 64 55 140 120 105 93 82 70 64 55 NO TAPS 1.3 1.8 2.4 3.1 3.9 5.4 6.6 9.2 2.2 3.0 4.0 5.4 7.0 9.9 12.0 17.0 5.7 0.34 0.35 0.34 0.33 0.32 0,31 0.31 0.35 0.32 0.30 0.31 0.31 0.32 0.34 0.36
- 0. 39 0.29 0.4 0.5 0.7 0.9 1.2 1.7 2.1 3.2 0.7 0.9 1.2 1.7 2.2 3.4 4.3 6.6 1.7 50 - CYCLE BURDENS IAV51A IAV52A IAV53A 5
IAV538 IAV53C 115 115 115 120 105 93 82 70 64 55 140 120 105 93 82 70 64 55 NO TAPS 1.2 1.6 2.1 2.8 3.6 5.1 6.2 8.2 1.9 2.5 3.4 4.6 6.0 8.4 12.9 13.2 4.8 0.34 0.34 0.34 0.38 0.36 0.34 0.34 0.34 0.32 0.30 0.29 0.31 0.32 0.'35 0.29 0.35 0.32 0,4 0 ~ 5 0.7 1.9 1.3 1.7 2.1 2.9 0.6 0.8 1.0 1.4 1.9 2.9 3.7 4.6 1.6 25 - CYCLE BURDENS 1AV51A IAV52A 115 140 120 105 93 82 70 64 55 1.1 1.5 2.1 2.7 3.4 4.8 5.8 8.2 0.50 0.49 0.49 0.47 0.49 0.49 0.49 0.49 0.5 0.8 1.'0 1.2 1.7
'2.4 2.9 4.0 C
""Minimum pickup volts.
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ASEA BROWN BOVERI AftBchmt.t)I go Job at oi-sgq Cate No.
Rev. No.
Sht.
I pf Bulletin 7.4.1-1E Protective Relays Drawout Types 27, 27D, 27M Types 59, 59D, 59M
~
VIIOEAVOLRAOE AELA'Y r~Tl'll m
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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-fer. Inherently high seismic and transient immunity allow the use of these relays in generating stations or sub-stations where the performance of electromechanical or 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 50 or 60 Hz.
The unique design ot the output circuit does not require 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
~ Inverse, definite time, or high speed
~ Accurate, repeatable characteristics
~ Low burden
~ Seismic capabiIity to 6g ZPA
~ Transient immunity
~ Drawout construction A
8 C
52 27
(-)
27 52 7
CONTROL POWER 52 8
TC TYPICALCIRCUIT SHIELD UNDERVOLTAGE RELAY APPLICATION FREQUENCY RESPONSE TYPICALSEISMIC TEST RESULTS ZO 0
I
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pt 5 C
o 0
IL 20 40 80 80 100 FREQUENCY IN NR I
2 4
10 18 FAEOUENCY IN NR ISo 2
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a pt ervoltage and Overvoltage Relays Types 27, 27D, 27H, 59, 59D,. 59H Specifications PICKUP TAPS (volts)
DROPOUT TAPS (volts)
Type 27 Type 27D Type 27H 60 70 80 90 100 110 Type 27H 30 35 40 45 50 55 Type 59 Type 59D Type 59H 100 110 120 130 140 150 Ital Ialt
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00\\Itlll40 lat IIIII00 Input Circuit Rating:
Control Power:
Ootput Circuit Rating:
9 125 Vdc Temperature:
ismlc Capability:
Transient Immunity:
Operating Time:
160V, 50/60 Hz continuous 1.2 VA, 1.0 P.F. at 120V 48/125 Vdc, dual rated,.08A max; 2432 Vdc, 0.08A max.
30 Amps Tripping Duty 5 Amps Continuous 1 Amp, Opening Resistive 0.3 Amp, Opening Inductive Minus 20'o plus 70'C More than 6g ZPA biaxial broad-band multlfrequency vibration without damage or malfunction (ANSI/IEEE C37.98)
More than 2500V, 1 MHz bursts at 400Hz repetition rate, continuous (ANSI C37.90a SWC); fast transient test; EMI test models available:
~ high speed
~ inverse time delay (see curves)
~ definite time delay, ranges 0.1 - 1.0 seconds, and 1.0-10 seconds TIME VOLTAGECHARACTEROTICS Tatt 00 40 I04T0I00 al I000CVT 00TTII0 OllttlpOCIITTte ICaa 0 IlttaaaT
~aattl Tlat tl IO Iaa ICCICIlta ICaa llltaaaaT 0
I0 aa al al at I44TTICCtlrOar 00TTItl I0ITITTOICCT Ita TCaa TIICtaaal l000IT Tlat tl ltat ICCaal Ita TCaa TIIClaaaT TYPE 27 TYPE 59 TIME-VOLTAGECHARACTERISTICS How To Specify Voltage relay shall be Asea Brown Boverl Type 27, 59 or ap-proved equal, drawout case, capable of withstanding up to 6g ZPA seismic stress without damage or malfunction, at minimum voltage and time settings. A magnetic operation indicator shall be provided which retains position on loss of control power.
Built-in means shall be provided to allow operational tests with-out additional equipment.
Additional Information How To Order For a complete listing of available versions of single and three phase voltage relays see selection sheet 7.4.0.3.
Models are available for 24, 32, 48 or 125 Vdc control power.
For 120 Vac potential applications, and other control voltages contact the nearest District Office.
Instruction Book Relay Selection Sheet IB 18.4.7.2 7.4.0,3 To place an order, or for further information, contact the nearest District Office, or the Sales Manager, Protective Relays.
ABB Power Tranamlaalon, Inc.
Protective Relay Oivislon 35 N. Snowdrift Road, Allentown. PA 18106 Telephone (215) 395-6888 FAX 215.395. I055 Supersedes Issue 0 printed ln U.S.A. 0189
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Attachment No.
Job Cale No.
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CCC, YCC, Br, VCX CURRENT 5 VOLTAGE TRANSDUCERS
~ Used and Approved Worldwide
~ High Accuracy
~ Outstanding Overload and
'emperature Performance
~ Excellent Long-Term Stability 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)
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8 tttatt 0 tea HIS 4 aaattaa t 1 aaattatdaa The Rochester instrument Systems CCC Current Transducer and VCC 'Voltage Transducer arc compact instruments dc.
igned to accept an AC current or voltage mput'and provide a proponional OC current output. The VCX Voltage Trans-ducer isa'suppressed zero unn that provides the same tvpe oi output stgnaL These transducers are designed to respond to the aierage value of the input signal. but all mooels are calibrated to mdicate the rms of s pure sinusoid. Allmodels are constructed w nh an ultra.linear transformer input stage isolating the input from the solid-state output amplilier.
Like all Rochester instrument Systems transducers. these currcm and voltage umts incorporate statewf.the-art elearical and mechamcal design. Only the highest quality components.
!atcst production techniques and most advanced test equipment and procedures are used in their rnanut'aaure.
ul models are designed to mea the A.'tlSI Ss VC (surge wnhstand capabdityl test and BEAlvtATest No. 2l9. to assure reliable pertormance in the tield.
CCC. VCC and VCX transduccrs are housed in rugged drawn-steel enclosures vvith weldedwn mourning plates. The entire circuitry may be pulled by removing two easiiy-accessible screws withoutdismount-ing the enclosure from the paneL For more information on current and voltage transducers. application assistance on a special prolea. or simply to place an order consult your nearest RiS Sales Office or any ofthe faaory locations listed on the back page.
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Attachment No.
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Sht.~
FPL TURKEY POINT NUCLEAR PLANT TOTAL EQUIPMENT DATA BASE UNIT: 03 COMPONENT TAG 4t 30101 ASSOCt C04-VM PAGE NO.
DESCt 480 V LC SYSTEHt 480 VOLT LOCATION DESC+
LOCATION CODE t RMPt NPRDS:
GEMS MAJOR CODEt GEMS MAJOR MFTRt GEHS ID CODEt GEMS MINOR CODE:
GEMS MINOR MFTR t ACCOUNT CODEt EQUIPMENT MFTR t MODEL NOt SEISMIC CAT t HEAR PROTECTION t A VOLTMETER SHITCHGEAR SYSTEM CONTROL ROOM r VERTICAL PANEL 360 STARTUP SYSTEM CODE)
N ISTt N
SAFETY CLASSt Y
QBASISt EF52 GGROUPt HES QLEVELt EQ REGDt SCEHt PCMt 531 SPEERt WESTINGHOUSE ELECT i SURV HAINT NOTE t TYPEtVC-252~
STYLE:G-9589 DOC PAC:
ENGRG DAT* REFt REMARVS'/A CODEt 006 N/A N/A N/A DRAHING NUMBER 5610-E-28 5610-E-5 PROCEDURES SHEET 13 1
PROCEDURE TITLE PURCHASE ORDERS 5610-M-301 AP 0190 i 28 POST MAINTENANCE TESTING Ofke~
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Westinghouse Electric Corporation Relay-Instrument Division, Newark, N.J. 07101 March, 1976 Type 252, 4'/a" Scale Length Supersedes DB 43-252 dated August, 1972 1'/a% Accuracy E, D, C/2036/DB 43-252 0 WE A Descriptive Bulletin "ge 'ttachment NO, Job CI N.~
Rev. No.
Sht.
of Edgewise ~
Switchboard Instrument Specifications Accuracy 1/a% offullscale de-flection, horizontal or vertical; a 1'/o on spe-cial order Application Type 252 edgewise instruments were de-signed specifically forthe 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.
These instruments incorporate into edgewise instruments the same taut. band suspension system which is used in the highest quality Westinghouse portable and switchboard in-struments.
They are available in types fordirect meas-urement of standard electrical quantities, or in combination with transducers fpr measur-ing any other electrical op mechanical quan-titycapable of being converted into a propor-tional electrical quantity.
Standards There is no published requirement in ANSI C391-1972 for instruments of this type, how-ever they specifically meet the switchboard instrument requirements therein. The type 252 instruments meet the flamabilityre-quirements of IEEE Standard 420-1973 and they pass the seismic qualification tests under IEEE Standard 344-1971 (Rev. 5 dated 9-23~74)
A C
A M
P E
R E
S
==1500
-=1000
- 500
=0
- =60 A
=80'
=90 0
W E
R F -100 A
C T =
0
- -90:80 LE A
D m 60
=800
=600 A
.C.
K I" 400 W
A T
T S
=200
~I =0 Waveform Compensation Instantaneous Overload Capacity Working Voltage to Ground Shielding To 15% ofthird harmonic content 1200 volts dc, 800 volts ac
~
Magnetically shielded Vcrtkal Type <Gtoupad)
Ac-35Times Rating Dc-100 Times Rating Net Weight Shipping Weight 1 i/a pounds 2'/a pounds Ratings (Self-Contained)
Dc: 20 microamperes to 50 amperes 50 millivoltsto 800 volts Ac: 10 milliamperes to 20 amperes 5 volts to 600 volts Transducer-type frequency meters, varmet-ers, wattmetters.
Scale Length 4.5 inches (11.43 cm)
Hotfaonlal Type A-C AMPERES
/
I I I I ( I I I I )
I I I I f I I I I I I I I
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'43.252 D WE A Descriptive Bulletin Attachment No.
JOE I
(7 OllN.
RBy. No.
O Sht.
9 ot Construction Allcomponents are mounted on a plastic drawer which slides into a plastic case with 8 clear, curved window. The entire assembly is treated to be static free. The plastic is polycarbonate IASTM0635) for impact strength and flame retardance.
Mechanism The dc instrument is of the permanent-magnet moving-coil type in a core magnet construction.
Burden Characteristics at 60 Hertz Burdens on Current Transformers at 5 Amps Instrument Impedance:
Resistance:
Ratin Ohms Ohms Reactance:
Ohms 5amp
~.024
.013
.020 Lamps Lamp Type Volts Amps Burden on Potential Transformers at 120 Volts Instrument Volt.
watts Ratin Amperes 150uolts Volt Amperes Vers Percent Power Factor Percent Power Factor For ac measurement the same mechanism is 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 oftheir orien-tation.
8.3 0.25 Suspension Alltype 252 instruments use the Westing-house perfected taut-band suspensions.
In-struments incorporating this feature are iden-tified by the trademark~ The absence of frictionin 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 Pointer edge and dial markings are on the same arc that there is no parallax error.
Mounting Instruments may be stacked horizontally or vertically. Eight edgewise vertical instru-ments willoccupy the same panel width as three conventional instruments. Trim strips, furnished with each instrument, finish offthe edge of each instrument or array. Dial cards may be interchanged to adapt from horizontal to vertical mounting or to change scales.
Modifications Available Internal illumination with low-voltage lamp and translucent dial.
II I
I II I
IIII 8
I I
r
(
II 1
III 1
I 7.04 (129 2 Qo-
.695 (tat~/
IA)00 (28)
II I
III 1.000 (ZN) 50M I
((ZAI 2-28 Threaded Ternnato(s 0 5.664
,'teAIt KM2 (7.2) 1.068 (2.71 6035 (tss)
Outline and Panel Cutout Dimensions, In Inches (Centimeters) 8 (See Table)
TOO ta VertiCal tnttrumere 5.695 (ted)
External rear illumination with clear-case and translucent dial.
Non-glare window Dual scale or rating Straight fine tubular pointer Offset, center, or suppressed zero Gasketed construction Further Information s: Price List 43-200
- tions: Instruction Leaflet 43-252 sducers: Descriptive Bulletin 43.661 Avodobre for Internal Ilium(oaten Figure 2 Avoitob(~ tor Multi.ronoe Inslfumerus Mounnrv) aroctet Assembly Two trim strips are needed to trim either a single instrument or a stacked array.
Mounting Figure 1 shows the two bracket assemblies and two trim strips which are supplied with each 252 instrument. Figure 2 illustrates how these parts are used.
No. of Instruments Dimensions 5
6 e
1.770 (4.3) 3.510 (8.9) 5.250 ((33) 6.990 (17.8) 8.730 (22.2) 10.470126.6) 12.210 (31.0) 13.950 (35.4)
I I cu Ie Pone((y(t.s)Maximum) 4100100 2.166 (5. 5) 3.896 (9.9) 5.620 (14.3) 7.356 (18,7) 9.086 (23.1) 10.816 (27.5) 12.546 (31.9) 14.278 (36.3)
i I
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Appendix A o o c
~
>C 0 v v v
- MIRE. TABLE.
OC Res)stance - ohms/1000 ft Attachment No.
Job Gale No. ~'~~~-~~ -E-~
R.N.~
Sht.~of~
gac g
a a B p C v g 0J) v c0o~
QV cE 3 I.
Illg XuE LU ~
to e o
Ks I o "8
8$
C s'Q
'R '8 vB Ej 0
CONDUCTOR SIZE AMG or kcmtl 25'C STANDARD CLASS 8 ANNEALED COATED COPPER ANNEALED ALUHINN 55'C 90'C CU AL CU AL CU AL 14 12 10 9
8 7
6 5
4 3
2 1
1/0 2/0 3/0 4/0 250 300 350 400 500 600 750 1000 2.73 1.72 1.08 0.857 0.679 0.539 0.427 0.339 0.269 0.21 3 0.169 0.134 0.106 0.0843 0.0668 0.0525 0.0449 0 0374 0.0320 0.0278 0.0222 0.0187 0.0148 0 0111 2.70 1.70 1.35 1.07 0.674 0.424 0.267 0.211 0.168,-
0.133 0.105 0.0836 0.0708 0.0590 0.0505 0.0442 0.0354 0.0295 O.OP36 0.0177 3.044 1.92 1.20 0.96 0.76 0.60
,0.476 0.378 0.300 0.237 0.1884 0.149 0.118 0.094 0.0745 0.0585 0.05 0.0417 0.0357 0.031 0.02475 0.02085
,0.0165 0.01238 3.024 1.904 1.512 1.198 0.755 0.475 0.299 0 236 0.188 0.149 0.1176 0.0936 0.0793 0+0661 0.0566 0.0495 0.0396 0.033 0.0264 0.0198
~
3-41 2.15 1.35 1.071 0.849 0.674 0.534 0.424 0.336 0.266 0.211 0.168 0.133 0.1054 0.0835 0.0656 0.056 0.04675 0.04 0.0348 0.0278 0.0234 0.0185 0.0139 3.397 2.1394, 1.698h-1.346k 0.848 0.533 0.336.
0.265
~
0.21 1'.167 0.132 0.105 0.0891
- 0. 0742 0.0635
- 0. 0556 0.0445" 0.
037T'.0297 0.0223 For Other Temperatures:
RT ~
+Adapted from Okon)te Conductor Electrical BPC R25(234.5
+ T) x 0.0038536 for Copper R25(228.1
+ T) x 0..003951 for Alum)num Bulletin EHB-81, Engineering Data, Copper and Alumlnum-
p4 I
"t
((j
Qkonite Cables Section 1
General Conductor Information ac/dc Ratios Attachment No.
Job Calc No.
~
~ -~ 3-~-o Rev. No.
o Sht.~ of~'o determine effective 60-Hertz ac resistance, multiply dc resistance values corrected for proper temperature. by the ac/dc resistance ratio given below.
These apply to the following specific conditions.
Use Columns 1 and 2 for:
(a) Singteconductor non-metallic sheathed cables in air or non-metallic conduit.
(b) Singtewonductor metallic-sheathed cables with sheaths insulated in air or separate non.metallic conduits.
(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 Conductor Size AWG or kcmtt 1
Standard Conductor Copper Aluminum 2
Se mental Condu'ctor 3
All Strandings Copper Aluminum Aluminum Copper Up to 3 Zand 1
0 00 000 0000 250 300 350 400 500 600 700 750 800 1000 1250 1500 1750 2000 2500 1.000 1.000 1.001 1.001 1.002 1.004 1.005 1.006 1.009 1.011 1.018 1.025 1.034 1.039 1.044 1.067 1.102 1.142 1.185 1.233 1.326 1.000 1.000 1.000 1.001 1.001 1.001 1.002 1.003 1.004 1.005 1.007 1.010.
1.013 1.015 1.017 1.026 1.040 1.058 1.079 1.100 1.142 1.010 1.018 1.028 1.038 1.052 1.078 1.005 1.008 1.012 1.016 1.020 1.028 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.10 1.13 1.16 1.19 1.21 1.00 1.00 1.00 1.00 1.01 1.01 1.02 1.02 1.03 1.04 1.06 1.08 1.11 1.12 1.14 1.19 1.27
Okonite Cables Section 3 Attachment No.
I-5a JOb
>~
g
-E-o I Calc No.
~.X.~
Sht.~ d Voltage egu ation Reactance of conductors at 60 Hz (Series inductive reactance to neutral)
Table 3-1 SIZE NDUCTOR G Or kcmll 0 CENTER BETWEEN CTORS HES CENTER T SPACING CONDU INC CO DIA.IN AW INCHES 2.0 0
1.8 1.6 1.4 1.2 1.0
.5 4 000 0
1 2
4
.18
.16
.14 8
.Ig 0
10 BASEDON FORMU'LA s
x = 2trl(0.1404 logPE r +0.0153) X 10 x = Reactancewhms/1000'
= Frequency r = Radiusof Conductor s = Center to Centerspaclng between conductors ECUIVALENTSPACING ~
I 0
0 0
~ = fyAXSXC Equilateral Triangle -S-Es A
A TANCE IF 1000'TRANDED
.05
.06 2000 1?50 1500 1250 1000
.08
.10 Right Angle Triangle S
1.123 Symmetrical Flat "S" = 1.26A 600 Cradle "S" = 1.15A 500 REAC 4oo
. OHM 350 300 250 0000 000 00 0
1
.15
.25
.30 01
.40
.50 02 03
.04
.~05 o6 ~
COhhECTIONSPOh MULTI%ONOUCTOII CAbLES X 15 2.5 3.0 Condr Non Mscnsdo Mscnobo
/
alndor alndol kent il noLNLd soclor nound socsoE
~ Up to Mvnlplrlnd FECtoE
.07
.08 250 1.000
.975 1.149 1.230 300 1.000
.970 1.146 1.225 350 1.000
.985 1.140 1.220 400 1.000
.960 1.134 1.218
.09 4.0 5.0 6.0
.10 500 1.000
.950 1.122 1.208 800 1.000
.940 1.1 1 1 1.199 700 1.000
.930 1.100 1.191
?50 1.000
.925 1.095 1.188 EP 12 14 16
.04-18 20
.03 22
.02 2
12 14 16 18 SINGLE CONOUCTORS IN CONOUIT Non Magnetic-Increase 207P lor random lay
'agnetic-Increase StyA for mag-netic etfect and randoni Iay MULTIPLE CONOUCTOR CABLES IN CONOUIT Non-Magnetic-No Correction Magnetic-Use Value for Round Con-ductors with Magnetic Binder EXAMPLE:
find Reactance of 3-1 Condr 750 kcmil Cables In Magnetic Conduit Cable O.O. = 2.00" Une from 750 kcmil x = 0.038 Correction for Mag-netic Conduit = I.50 Reactance
=
0.057 OHMS/1000
.13
.14
.15
.17
.18
.19
.21 8.0 10.0 15 20 25 30 40 50 60