ML20076G394

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Responds to 830728 Request for Info Re 1980-82 Main Transformer Failures.Statistical Info Taken from Yearly Doble Engineering Co-client Conference Minutes on Transformer Failure Encl
ML20076G394
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 08/26/1983
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Clark R, Harold Denton
Office of Nuclear Reactor Regulation
References
457, NUDOCS 8308310239
Download: ML20076G394 (16)
v • d • e


Text

.

s VINGINIA ELEcTHIC AND POWER COMI*ANY HIcnwoND,VIHOINIA 23261 W.L. STEWART Vics Puneronwy N :ctuam OPERATIONS August 26,1983 Mr. Harold R. Denton, Director Serial No. 457 Office of Nuclear Reactor Regulation N0/JHL:acm Attn:

Mr. Robert A. Clark, Chief Docket Nos. 50-338 Operating Reactors Branch No. 3 50-339 Division of Licensing License Nos. NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C. 20555 Centlemen:

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 RESPONSE TO THE REQUEST FOR INFORMATION REGARDING MAIN TRANSFORMER FAILURES Per your request for information regarding main transformer failures at North Anna Unit Nos. I and 2, dated July 28, 1983, enclosed is the statistical information which is part of the yearly Doble Engineering Company-client conference minutes on transformer tailures.

Very truly yours, lf 1

-e M L'. Stewart W. L Enclosure cc:

Mr. James P. O'Reilly Regional Administrator Region II Mr. M. B. Shymlock NRC Resident Inspector North Anna Power Station

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1900 YEARLY TRAtlSFORMER FAILURE SURVEY Tallure kV Rated-BIL

.N o.

H L

T MVA Ase-yrs.

Forus* Phase 3

230 26 s

1 161 750 19-150 3

2 161-750 17.1 150 170 26 s

3 3

161-36 20 10 3

4 140-48-4.8-50 31 s

c -

3 50 11 5

138-550 13.8 110 3

6, 138 550 46-250 30 26 s

3 7

138-12-18 c

3 12 25 8

132 550 13.5-110 c

9 115 550 13.8-110 20 24 c -

3 10 115-350 13.2-110 22.4 14 c -

3 c -

3 11 115 350 13.2 110 22.4 11 12 110-550 13.5-13.3 37 s

- 1 3

13 110-450 13.09-110 12 13 c

12 8

c -

3 14 110-450 13.09 110 3

?

15 110-13.8 25 -

c c -

3 10.5 17 16 69-350 13.8 95 c -

3 17 69-350 4.3-95 3.75 18 c -

3 18 69-350 13-110 2.4-75 10 26 19 69-13 8 2.4-12 20 c -

3 3

20 69-12-6 1 21 67-350 7.2-110 1.67 -

c -

3 3

2 66 34.5 136-45 29 3

23 63-350 12.47-110 7.5 22 c

3 24 46-72-5 1:

c c -

3 25 34.5 200 12 110 5 12 26 34 4-200 13.09-110 10 25 3

c 2'

34.5-2.4-4.8 1.0 -

c 1 21 34 &

5.04-8.7 0.833 -

c 1 4

29 34-4.

6.25 -

3 30 34-4-

4 687 -

3 31 26 4-4.16-3.75 -

c 1 3:

25-12 20 16 3

132-110 11-45 0.575-625 38 3

c i

34 345-1050 16.2-150 285 8

c -

35 115-550 33-200 7.5 25 c -

3 36 230 900 115 550 13.8-110 150 c -

3 37 66-350 12-110 7.5 12 3

c 32 66-350 8-110 0.25 33 c 1 39 12-2.4-1.5 56 s

40 60-14 4-12 3

s 41 500-1675 161 750 26-200 400 12 c 1 42 161-750 69-350 13.8-110 66 24 c 1 43 161-750 17.1-150 170 22 c -

3 44 230-116-14b 145 1

c -

4!

13b-450 69-350 12-110 15 lb c

3 4

138-144-21 c -

3 47 110-450 13.09-110 12 6

3 c

48 69-12-15 F

3 c

49 46-13.8 5 13 c -

3 50 34-13 6 25 3

51 500-230-392 14 3

c 52 500-138-392 3

3 c

53 345 138 13-234 12 54 345-22.8-700 15 3

55 335-138-13.8-234 1 rr 3

c 56 230-825 24.7-150 800 9

3 c

57 230-650 115-350 37.5-200 168 14 3

c

  • s = shell; c - core W89)

.p.

4-db TR81 --

y..

^

~

1980YEARLYiRANSFORMERFAILURESURVEY Fblin kV Rosed.BIL N o.

H L

T MVA A ge-yn.

Fons' Phase 55 154-60-11-60 -

3 Sc 147.3-13.2-15 10 c

3 00 138-69-13.2 20 24 c !

61 138-450 25 200 7.5 13 c 1 62 118-14.4-0.70 -

3 c

63 132-550 13.8 110 12 24 c -

3 64 115-450 44 250 2.4 110 3.3 34 c -

3 65 115-33-20 -

c 3

e6 115-350 13.09 110 24 3

c -

3 67 115-350 13.09-110 24 3

c 3

68 110-14 4-62.5 -

c -

3

-69 110-450 13.8-110 30 21 c -

3 70 110-450 13.09-110 20 1

3 c

71 110-450 13.8-110 20 10 c -

3 m

72 110-13 8-46-c -

3 3

69-350 13.8-95 10.5 16 c -

3 74 69 13.8-7.5 c -

3 j

75 69-13.00-7.5 17 c -

3

[

76 60-12.47-75 11 c

3 7*

69-350 12-110 7.5 12 c -

3 78 69-12-15 6

c -

3 To 67-2*-

33.3 c 1 80 67-13.09-

- 17 c -

81 67-350 13.09-110 5.0 17 c -

3 82 67-350 13.09-110 12 8

c -

3 E?67-350 13.04 110 7.5 c -

3 64 67-350 7.56-110 3.33 25 c 1 85 67-350 7.56-110 3.3 c -

3 h6 66-12-4-

20 -

- 1 E-66-12-4-

20 --

85 44-250 13.09-110 7.5 20 c -

3 89 44-13.09 110 75 16 c -

3 90 43.5-12.47-5 -

c -

3 91 34.5-200 12 110 25 I

c -

3 92 32.5-4 36 625 25 c -

3 93 34.5-7.56-3 333 -

c -

3 i

04 34 4 13.09 5.25 19 c

3 9.:

34 4-13.08-12.5 16 c -

3 9e 34-4-

6.25 -

3 9-13.8-2.4.

2.5 c -

3 9E 4.16 0 45 1.5 P

c -

3 9c 500 345-34.5 408 1

s

- 1 100 345 230-13.5-400 4m s

3 f

101 345 141 13.8 300 e

s 3

102 345-900 138-450 12 110 400 s

3 102 230-650 116-350 13.2 110 224 7

c -

3 104 230-650 116 350 132-74.9 12 c 1

{

105 230-650 115 350 13.2-110 224 1m 3

c 106 230-650 36.5-200 112 11 c

3 107 230-650 16.5 200 84 7

3 c

108 230-650 36.5-200 84 6

3 c

.109 161-69-13.2-30 10 c

3 110 138-450 69-350 34.5-200

!!5 3

c -

3 111^

138-450 69-350 12-110 36 2

c 3

112 s 138 450 69-350 12-110 30 15 3

c 113 138-450 69-350 12-110 92 12 c

3 114 138-450 34.5 200 25 9

3 c

115 138 26.4 84 7

c 3

116

\\

138-26.4 25 10 c

3

\\

l

  • s = shell. c = core FR81 34

1980 YEAR,LY TRANSFORMER SURVEY

~

Failure kV Rated.BIL No.

H L

T MVA Ase-yrs.

Form

c -

3 118 69-350 12 110 7.5 12 c -

3 119 26.4-87-14 7

c -

3 120 26.4-4.16-c -

3 2.24 1

121 138-630 34.5-230 160 18 s

3 122 115-69-13.8-12.5 30 c

3 123 ~

115-13.2-140 15 3

c 124 110-450 13.8-110 20 24 c -

3 125 110-450 13.8-110 26 22 c -

3 126 110-13.8-46 -

c -

3 127 69-25-20 9

3 128 69 350 13-110 4-16.8 14 c -

3 129 69-350 13-110 4-16.8 18 c -

3 130 69-12-10 16 c -

3 131 34.5-13.2-14 13 c -

3 132 34 4-13.2 14 2

c -

3 133 230-650 37.5-700 100 13 s

3 134 141.6-550 13.8 110 12 19 c -

3 135 138-450 69-350 12-110 15 18 c -

3 136 34 4-200 13.2 110 14 16 c -

3 137 34 4-13.2-12.5 5w c -

3 138 34-13.2 7.5

~

139 115-550 24-150 30 13 c -

3 140 115 550 12-110 2.3-5 12 c -

3 141 66-350 7.2 110 0.667 13 c 1 142 60-350 4.16-95 7.5 16 c -

3 143 34-13-6.25 3

144 34-13-t,.25 3

145 230-825 34.5 200 160 12 s

3 146 34.5-12 25 16 c -

3 147 24-12.46-2.3-10 38 c -

3 148 34.5-200 12-4.16 5 12 c

3 149 136-69-13.2 30 14 c -

3 150 136-69-132-30 10 c -

3 151 115-450 12 47 110 12 26 c -

3 152 105-450 13.5-12 23 c

2 153 66-350 13-110 63 28 c 1 154 46-13.04-30 10 c -

3 155 46-832-20 15 c -

3 156 46-832-10 19 c -

3 157 500-1300 115-450 224 16 s

3 I5t 500-1300 22-150 369.6 7

s

- 1 159 367 1050 20-150 685 12 s

3 160 352.5-141-500 6

s 3

161 138-450 69-350 34.5-200 7! 14 s

3 162 230-650 115-350 13.3-110 168 3

s 3

163 230-650 115-350 13.2-110 224 1m 3

c 164 230-118-650 11 c -

3 165 1392-34 3-112 3

c 3

166 138 69-135-30 32 s

3 167 138-34.5-12.0-8.33 33 s

- 1 168 138-27-83 31 3

c 169 138-550 13.8 110 22.4 4

3 c

170 138-450 12-110 20 8

3 c

171 138-12-20 11 3

172 115-350 36.5-200 84 13 s

3 4

  • s = shell: c = core f.O TR81.

19,30 YEARLY TRAtiSFORMER FAILURE SURVEY,,

Fhil;re kV-Rated-BIL i

i N 3-H L

T MVA Ase-yn.

Form' Phase 44.8 5

c 3

173

!!5 350 36-200 174 115 34.5 40 12 s

3 3

175 115-14 4.

30 9

s 176 115-450 13-!!0 22.4 15 3

c 177 110-450 13.1-110 45 9

3 c

3 178 110-450 13.09-110 12.5 17 c

1 179 69-12.47-10 7'

c 3

69-14.4-7.5 12 c -

3 180 181 69-12 10 8

c 3

182 67-350 13.09-110 18 15 3

c 183 67-12.47-c -

3 10 24 184 66.36-13.04-42 15 c -

185 34.4-200 12.47-110 7.5 8

3

.c 186 33.5-132-6.25 26 c -

3 18" 33-13-123 32 c 1 188 22.9-13.09-2.8 15 c

3 4

189 22-150 6.9-95 c -

3 43 9

i-

'190 132-13.2-3 24 44 c

191 11-110 4.15-75 5 18 s

3 192 500-250 -

193 230-115 -

104 115-1 -

  • 3
  • Sheli; C = core i

a i

i 1

4 TR81 36 -

. - ~.,

)

r.

1".31 YEARLY TRANSFORtiER FAILURE SURVEY l

4 Failure kV-Roted BIL Coil No.

H 1-T MVA Age-yrs-Form

  • Phase Design" 1

220-825 69 13S-200 6

s 3 e 2

138-650 13.8 50 17 3

3 138-7.56-

$16.25 26 c 1 c-4 134-550 13.8-15 -

c 3 c

_5 132-34 65-138-150 17 s

3 c 6

115-450 13.8-110 24 13 c -

3 c.

7 115-450 13.09-110 18 11 c -

3 c 8

69-1147 10 26 c -

3 c 9

69-350 12-110 7.5 13 c -

3 c 10 69 12-7.5 12 c -

3 c 11 69-12-3.75 -

3 e 12 67-14 4-12.5 -

3 -

13 67-12.5-7.5 30 c

3 c 14 67-350 12.4-6.5 12 3 c c

15 66-13.09-7.5 23 3 c c

16 46-7.5-1147 10 16 c -

3 c 17 4-5-8.32 12.5 16 c -

3 c 18 34 4-4.36-7.5 12 c

3 c 19 344-13.5-10 35 c -

3 e 20 34 4-4-

11.2 14 c -

3 c 2:

34 <.-

4-11.2 14 c -

3 c 22 34-13.2-0.5 23 33-200 13.5-15 24 c

3 e 24 13.5-4.16-10 21 c -

3 25 13.2-110 4.36-75 3.125 17 c -

3 c 26 13.2-110 4.16-75 2.0 20 3 c c

27 110-550 40-250 10-125 31.5 6

c 1 c

28 35-36-10 19 c

3 e 29 127-S E-33 21 c 1

- c 30 86-20-20 11 c 1 c

31 88-13.2-7.5 14 c -

3 e 32 13.5-4 6-25 19 3 e c

33 23C-26-125 13 3 e c

34 161-13 3 30 30 c 1 i

c 35 161-136-30 30 c 1 c

36 135-650 69-350 23-110 56 16 3 e c

37

!!5-550 12 110 2.3-5 5

c -

3 c 31 13.5 13.5-30 20 3 c c

3c 345-1050 230-825 13.8-110 235 c

c -

3 e 40 23G.

60-12-75 25 s

3

?

41 230-0.240-0.3 25 c 1 c

42 138-550 69-350 23-150 33.5 14 c -

3 e 43 66-350 8-110 0.25 33 c 1 c

E 43.5 0.48-0.27' 3.33 5

3 -

r c

45 66-13.5-2 16 c

3 c 46 525 1425 241.5-650 34.5-200 336 7

c 1 c

47 230-132.5-60 2

3 e c

45 161 12-7.2-25 11 3 c c

49 132-12-50 50 132-12-50 51 132-12 50 52 110-13.09-20 11 c

3 c

$3 67-350 12.4-12 9

3 c c

54 14.4-0.277-0 480 2.0 2

3 55 138-550 13.8-110 75 9

3 e c

56 66-350 4.16-75 10 9

3 e c

  • s - shell: c = core
    • c = circular cous: r = rectangular coih n = new; m - months i

l l

TRTQ82 33

,; -3

)

-. - -- u

M ~ -"-

l 1931YEARLYTRANSFORMERFAILURESURVEY Fribure kV-Rated BIL Coll N o.

H L

T MVA Age-yrs.

Form

  • Phase Design **

$7 66-350 4.16-75 7.5 10 c -

3 c 58 500-1675 20 7150 400 7

c 1 c

59 38-10-2 20 c

3 e 60 38-10 3 c 1 32 c

61 132-12-50 --

62 115-450 67-250 60 1

c -

3 c 63 34-4.16-0.375 -

64 34-0.480-0.25 -

65 13.2-110 2.5-3.75 -

c 3 e 66 525-1425 241.5-650 300 7

c !

- c 67 345-138-13.2-400 10 c -

3 e 68 345 900 138-450 12-110 400 13 s

3 c 69 345-138-33-300 -

70 345-138-234 4

3 -

71 345-138-175 5

3 72 345-69-234 8

3 -

73 345-25-980 -

s 3 c 74 230-900 115-550 90 22 3 e c

75 230-64-10S-28.9 46 c 1 c

76 230-650 36.5 200 13.2-110 100 11 c -

3 e

~~

230-600 7

3 e 78 161-64-13.5-72 -

3 c c

79 161 750 22.5-150 300 29 c -

3 c 80 161 750 12.3-110 27.5 31 c 1 c

Si 142.3-550 13.2 110 7.5 14 c -

3 8:

138-550 69-350 14-110 168 9

c 3 e 83 135 41.6-5 31 c -

3 e 84 135-13.04-20 8

3 c c

85 135-13.5-50 7

3 -

86 134-550 13.5-7.5 c -

3 c 87 120-14-25 52 3

88 115-550 34.5-200 40 25 3 e c

89 115-450 19.9-34.5 7.5 6

90 115 550 13 5-20 17 c -

3 91 115 550 11.5 110 7.5 33 c 1 c

9; 115-550 11.5-110 7.5 33 c 1 c

92 69 350 23-150 2.4-60 20 20 c

3 c 04 60-13.2-7.5 2

3 c

9 64-12-20 -

9e 60-7.5 10 3 c c

9' 67.2 350 12 47 110 7.5 21 c -

3 96 67 350 135-15 -

3 c c

99 67 350 13.6 15 -

c 3 c 1 00-67-13.09-16 6

3 c c

101 67-13.09-7.56 0.833 24 c 1 c

10:

67-250.13.09-110 33 27 c 1 c

10}

67-350 12.4-12 19 3 c c

104 67 350 12.4-12 19 3 c c

105 67-J50 12.4-2.5 28 3 c c

106 67-4.36-8.4 8

3 c c

107 66 350 34-45 31 3 e c

108 46-12.5 10 9

3 c c

109 45 250 13-110 6.67 20 c 1 c

110 43.8-13.09 3.75 17 3 e c

til 34 4-13.4-13.4 2m 3 c c

  • = shell; e = core
    • c = circular coils; r = rect 4ngular coils n = new; m = months TRTQ82

-. a -

g

.c.

1981 YEARLY TRANSFORMER FAILURE SURVEY Failure kV-Rated BIL Coil N o.

H L

T MVA Age-yrs.

Form

  • Phase Desig e **

c -

3 c 112 34 4-13.09-26 113 33-4160-3.75 41 3 c 114 14 4-0.277-0.480 2.0 6

3 -

115 14 4-0.216-0.125 0.75 15 3

116 13.8-4.33-1.5 3 -

!!7 13.8 2.4.

1 8

c 3 c 3.75 33 c -

3 e 118 13.2 110 4.16-75 119 88 13.2 7.5 14 c -

3 c 120 34.5-12.47-5 3

3 -

r 121 525-1425 241.5-650 400 10 c 1

- c li 1

c -

3 c 122 115 13.09-7.2 123 34.5-13.00-7 13 c -

3 c c -

3 e 124

!!5-13.00-12 5

125 34 4-200 13.2 110 5.6 12 c -

3 e l

3 -

r 126 34.4 200 13.2-110 9.375 12 c

3 c 127 13.5-2.4-3.75 -

c 128 345-230-13.8-400 3

s 3 -

129 345-IS-615 4

s 3 -

130 230-60-12.47-150 9

c -

3 c 131 230-650 36.5-200 3 c 45 6m c

132 230-650 36.5-200 c -

3 e 84 6

l 133 230-650 36.5-200 112 11 c -

3 e 134 230-650 36.5-200 13.2-110 165 13 c -

3 c 135 230-650 25-150 515 s

3 c 136 230-24-850 4

c 3 c 137 135-34.

25 -

3 c 131 138-550 14-110 33 2!

c -

3 c 139 135-13.5-35 9

3 140 69 350 12-110 12 12 3 c c

141 344-4.16-3.75 9

3 -

r i

c i

142 34-0.240-0 480 1

7 e.

3 c I

143 20-34.5 4 8-8.32 0.333 -

- 1 144 115-350 13.2-110 12.5 11 c -

3 e l

145 115-450 12.47 110 12 17 c -

3 c l

146 66 350 0.6-45 2.875 18 3 e c

147 46-5-8.32 5 11 c

3 c 141 34.5-200 11.5-110 2.4-10 11 3 c c

14C 34 4-13.5-10 17 c -

3 c 150 34-13.S.

30 li c -

3 e 151 525-1425 241.5-650 300 14 s

- 1

- c 152 142.3-550 13.2-110 25 17 c -

3 -

153 136 6-650 12.47-110 12 25 c -

3 -

154 110 450 69-350 15 31 c -

3 c 155 34.5-200 12-110 5.0 2-3 e c

156 22-150 6.9-95 3.3 33 c 1 c

157

!!$-550 66-350 30 16 3 e c

158-115-550 66-350 30 11 c -

3 e 159 66-350 7.2-110 0.667 13 c 1 r

160 66-350 7.2 110 0.667 13 c 1 r

161 66-350 7.2-110 0.667 13 c 1 r

162 34.5-0.480-1.5 22 c -

3 c 163 13.8-4.16-3500 4

3 c 164 138-13.8-15 3

c 3 e 165 127-88-5 6

c 1

- c

  • s = shell; e = core "c = circtuar cons; r = rectangular coils n = new; m = months TRTQ82

- 35 I i_3

l

.1981 YEARLY -TRANSFORMER FAILURE SURVEY Fall.:re kV Rosed BIL Coil H

L T

MVA Age-yrs.

Form

  • Phase Design" 3 c 16e 35-10 5 12 c

3 -

167 13.8-0 48 0.75 12 3 c 12 17 c

168 69-350 13-110 25 9

c -

3 c 169 67-350 114-170

~

230-25-125 12 c -

3 c 3 c 171 230-22.5-575 o

c 172 230-13.5-33 33 s

3 c c -

3 e 15 33 173 27.6-1 174 500-1425 23.8-150 310 11 s

r 175 500-1300 22 150 330 8

s 1

r 176 500-1300 22 150 330 8

s

- 1 r

3 c 177 345 1050 118-450 13 8-110 300 15 c

178 345-1050 20.3-150 542 10 s

3 c 3 c 179 345-1050 20.3-150 542 10 s

3 180 345-20 325 6

181 230-650 69 350 13.2-110 37.33 2

c 1

- c 3 -

r 5182 230-69-12.47-150 7

s 6

183 230 900 13.6-110 43 30 s

- 1 r

184 220-825 36-26.25-75 22 s

3 c 185 139.2

'4.5 60 19 c

3 c 186 13&-

69-100 11 c -

3 c 18' 136 69-11470 5 -

s 3 e 181 138-69-13.8-8.33 30 s

- 1 189 135-13.0' -

3.75 5

c 3 c 190 135-23 40 10 c -

3 c 191 135-13.5-50 8

3 -

192 138550 13.09 110 10 15 c -

3 c 193 132-12-50 -

19.t 132-12-20 -

195 120-13.2-16.6 e

3 c c

19e 115-69-12.8 67.2 18 m 3 c c

19' 115-450 34.5 200 40 12 c -

3 c 198 115-14 4-5,315 12 22 c -

3 e 19c

!!5-450 13.2-110 22.4 17 c -

3 c 200 110-13.09-20-15 -

c 3 c 201 110-13.09 5 16 c -

3 c

202, 60-23.9

'0 II c -

3 c 203 69-12 476 14 3 c s

20;67-250 13.09-110 18 1-c -

3 c 205 66-12.47-7.2 5 10 c -

3 c 206 66-1147 7.2 5 10 c

3 c 207 66-6.9-0.833 54 c I c

205 60-13.5-10 32 c

3 e l

209 46-7.9-13.8 24 15 3 e c

210 46-5-8.32 1.5 -

3 c c

211 34.5-69 11470-50 -

s 3 c 212 34.5-7.2-5 3

c r

213 34.5-7.2 1.5 33 c 1 c

214 34 5-2.4-2.5 27 3 c c

215 34 4-200 22.9 150 14-18.7 24 3 c c

216 34.4-4.36-10 -14 3 c c

217 34-4.36-0.15 218 34-0 480-0.277 5 12 3 e c

's = shell; c = core

    • c = circular coils; r = rectangular coils a = new; m = months TRTQ82.

Q.... _.. ---. --.....-- -..

w._-

e s

1981 YEARLY. TRANSFORMER FAILURE SURVEY Failure k% Rated-BIL Coi!

No.

H L

T MVA Age-yrs.

Fonn* Phase Design" 219 33-13.8-7.9 14.0 -

3 220 33-4.3-3.75 28 3 c c

221 23-4 2.5 30 3 c c

222 22.9-150 13.09-110 7 12 c -

3 c 3

't 223 22.5 2.5-3.33 7m c

224 110-69-2.5 25 21 3 c c

225 109-13.7-37.5 26 3 e c

226 69-13.8-5.6 4

c -

3 c 227 69-2.5-1.5 16 c -

3 c 228 66-

0. 6-5 7

s 3 c i

l 1

  • s = shell; e - core
    • c = circular cogs; r = rectangular coils n = new; m = months TRTQ82

- 37

p. %.. -

w.

_........;--~_,.,,,,

)

1932 YEARLY TRANSFORMER FAILURE SURVEY Ft11xre k V.R ased.BIL Coil Failure N s.

H L

T MVA Ag'e-yrs.

Fore

  • Phase Design Mode 1

330-1175 135 550 13.2-110 125 27 s

3 e o

2 230-138-13.8-150 20 s

3 -

3 161-650 69-350 4.16 110 45 12 s

3 e o

4 161-45-12 47-33.3 9

3 e o

c 5

139.2-34.5-15 20 c -

3 c o

6 132-34 65-13.8-150 17 s

3 -

o

?

116-20.8 c -

3 c o

8 115-550 13.8 110 20 25 c -

3 c o

G 115-450 37.5-200 20 20 c -

3 e o

10 115-350 37.5-200 22.4 16 c -

3 c o

Il 115-350 13.2 110 22 4 14 c -

3 c o

12 70 6-13 8 10 70 c -

3 c o

13 69-33-13-45 30 s

3 a

14 69-350 24-150 4.16-7.5 20 c -

3 e o

15 69-350 13.2-9.3 14 c -

3 e o

16 69-13.2-10 10 c

3 e o

17 69 350 12-110 3.75 13 c -

3 c o

18 69-350 12-110 12 17 c -

3 c o

19 69-12-20 22 c -

3 c o

20 6L 135-15 14 c -

3 e o

21 67-12 47-12 13 c -

3 c o

22 67-12.4'.

5 10 c -

3 e o

23 67-12.47-7.5 13 c -

3 e o

24 60-350 13.2-110 16.8 8

c -

3 c e

25 46-13 10 16 c -

3 e o

26 E

10 10 33 c -

3 c e

27 35 10 5 26 c -

3 e 21 3 S-10-5 5

c 3 c c.

29 34 4-200 13.2 110 1.5 35 c -

3 c o

30 34-4-

3.125 31 13 8-416-10 8

c -

3 c o

32 13.2-110 4 33-75 1.5 35 c -

3 e c

33 13-110 24-6 32 c -

3 c o

34 765 345-34 5-500 12 c 1

- c o

35 525-135-135-200 c !

- c o

36 765-500-69-5500 1

c 1 c

37 34.5-13 5 1

c -

3 c e

38 26-4 50 s

- 1

- c o

30 88-15.2-12 e

c 3 -

o 40 85-15.2-10 11 c -

3 o

41 85-15.2-7.5-22 c -

3 -

o 42 23G-135-13.5-165 5

c -

3 c 43 230-60-12-150 2t c --

3 c o

44 138-14 4 75 20 c -

3 e e

45 23.76-13.2-6 55 c -

3 c o

+ -

46 230-

!!5-13-225 17 s

3 -

o 4?

230 115 13 215 25 s

3 o

45 230-60-12-75 26 s

3 -

r o

49 230-44-125 2

c -

3 -

SO 230 13 86 25 s

1 o

51 34.5-4.16-I 9

c -

3 c o

52 762-247-13.8-300 4

c 1

- c a

53 230 115-13-115 27 c

3 -

o 54 161-750 17.1 150 170 26 c -

3 e o

55 161 13.2-20 30

- c 56 115-550 13.8-110 15.5 21 c

3 e o

+ -

  • s = shell; c = core

'c = circular coils; r rectariguiar coils

  • o = coil failurt; + = core failure; e = other failure (leans. etc.)

TRTQ83

1

~.....

T -

T-.--

'~*

L

~

~

1932 YEARLY TRANSFORMER FAILURE SURVEY Foilure kV-Rated BIL Coil Failure No.

H L

T MVA Age yrs.

Form' Phase Design Mode 5'

161-13 5-18 10 c

3 c o

58 144-25 24-10 1

3 -

59 138 550 13 09-110 12 8

c -

3 c o

60 138-12 50 61 116-12.47-12 11 c -

3 e o

62 110-13.09-20 10 c

3 e 63 69-12.47-12 14 c -

3 c o

64 62.7-350 7.2-110 15 11 c -

3 e o

65 34.5-4.8-20 18 c -

3 c o

66 13.5-1-

3.027 3

c -

3 c o

67 138-550 134-650 14 4-110 56.8 10 c 1

- c 68 115-550 12-110 5 20 c -

3 c o

+ -

69 115-550 12-110 5 19 c -

3 e o

+ -

70 38-10 2 34 c -

3 c 71 38-10-2 32 c -

3 c 72 34.

.48 2

73 33 200 12-110 1.5 16 c -

3 c o

74 12-

.45-2.5 75 500-230-392 16 c -

3 c 76 345-900 138-450 12-110 400 15 s

3 c o

+

345-115 13 5-445 e

c -

3 c 78 289-1300 133-750 13.2 110 217 2

c 1

- c

+

7c 230 230 600 10 c -

3 c 80 230-650 165-200 84 9

c -

3 c o

81 230-650 36.5-200 13.2 110 56 14 c -

3 c o

82 165-130-160 25 c -

3 e o

83 161-69-13 41 c 1

- c 84 161 iS0 14.

40 36 3 -

!5 161-115 13.5-20 21 c -

3 c o

8e 161-115 13.8-34.5 20 20 c -

3 c o

2-161-750 12.3-250 27.5 34 c 1

- c 85 161-750 12.3-250 27.5 34 c 1

- c o

89 135-64-12-50 1

- T -

3 c 90 138-34.5-25 10 c -

3 c o

91 135-13.5-7.5 c -

3 c e

92 132-76.2-34 65-

- 60 8

c -

3 -

o 93 132 550 34.5-200 12.47-110 3C c -

3 c o

94

!!S-34.5 7.5 6

c -

3 c o

75 115-350 24-150 30 12 c -

3 c o

96 115-15 40 8

e -

97 115-550 13.8-110 12.5 32 c -

3 c o

98 115 550 13.8-110 12.5 35 c

3 c o

99 115-13.5-20 2

c 3 e 100 115-13.5-20 21 c -

3 c

=

101 115-13-25 17 c -

3 e 1C2 110-

/ 6-12.47-30 15 c -

3 c o

103 110-550 13.5-110 4 40 c 4

- c 104 110-550 13.8 110 4 40 c i

- c 105 110-550 13.8 110 4 40 c 1

- c 106

!!O-13.2-28 10 c -

3 c o

+

107 69-25-10 2

c -

3 c 108 69-25-7.5 1

c -

3 c 109 69-13.2-10.5 2

c -

3 -

r o

110 69-13.2 10.5 2.5 c -

3 t

o 111 69-350 13.09-110 7.5 25 c

3 e o

  • s = shell; c = core
  • c = circular coils; r - rectangular coils
  • o = coil failure: + = core failure; * = other failure Deads, etc.)

l l

TRTOO E

db

~

.ll w.n -..'

., w..:.-- r.:_..... -

.s.: a t...

~

1982 YEARLY TRANSFORMER FAILURE SURVEY Fdlire kV-Rated BIL Coil Failure N s.

H L

T MVA Age-yrs.

Form

  • Phase Design Mode 3 c o

112 69-12 47.

12 15 c

c -

3 c 113 69-12.47 30 26 o

3 c 7 18 c

114 69-12.47 o

3 c 115 69-4.16 5.0 27 o

+

c c -

3 e 116 67-13.8-15 20 o

c 1

- c o

11-67.2-416-0.833 53 3 c o

25 12 c

til 67-350 13.2 110 c I

- c o

119 67-13.09-1.25 27 3 c 120 67-12 47-5 19 o

c 2.5 19 c 1 121 67 4.16-c 122 66-25 10 50 c 1 c

o 7.5 50 c -

3 e 123 63-350 11 110 124 45-13 15 23 c -

3 e o

1.6 46 c 1

- c 125 36-4.16-126 34.5-200 13 09-110 10 2

c -

3 e o

127 34.5-12 7.5 11 c -

3 c 125 34.5-11-7.5 9

c -

- c 12*

26-4 60 s

- 1 o

130 22.9-115 12 47-110 1.5 24 c -

3 c o

3 c 1.5 25 c

131 13 8-110 2.4-75 c -

3 c o

132 13 2-4 36 2.5 26 c -

3 c o

133 416-480-2 3

134 4.1 480-2 8

c o

3 c o

420 10 135 c

3 -

o 136 88-15.2-7.5 14 c

3 -

137 20-3.5-10 39 o

c 13) 46-2 c -

3 e o

c -

3 c

=

139 161-64-10.5-40 140 138-550 36.2-200 15 3

c -

3 sc o

10 5

c -

3 c 141

!!5-350 13.2 110 a

A 142 230-750 34.5-200 30 8

c -

a c c

o 6

143 6o-13.8-4 24 c -

3 e 144 35-10 5 18 c -

3 e c -

3 c o

g a

145 230-650 36.5-200 150 12 g

14e 230-650 36 5-200 150 12 c -

3c o

147 230-650 36.5-200 84 8

c -

3 e o

850 5

s 3 -

r o

14E 230-22.5-c -

3 c e

14u 139.2-34.5-100.8 11 15e 139.2-34 5-67.2 18 c

3 c e

151 138 550 69-350 13.2 110 30 9

c -

3 c

152 136-34.5-83 11 s

3 c o

=

153 13 -

25-11 90 4

5 3 -

r

+ -

154 138-69-34.5-115 10 c -

3 c o

155 135-34.5-50 9

c 3 c o

3 e 156 115-34.5-13.5-26 11 c

157 115-14-50 14 c -

3 c o

155 115-13.8-30 1

c -

3 c e

15c 110-450 69-350 15 32 c -

3 c 33.3 12 c -

3 c o

160 110-13.8-14 10 c -

3 c 161 69-350 12-150 162 69-350 12-150 37.3 8

c -

3 e 3 e 28 4

c 163 43.8-150 43.8-250 p

164 34.4-200 4.16-5.25 10 3 e 5 20 c -

3 c o

165 13-11-

  • s = shell; c = core
  • c = circular coits; r rectaripular coils
  • o = coil failure; r = core failure; * = other failure ticads, etc.)

m.

A

bN,

_. u -

N

_m u

.~.u;

. 2...

1982 YEARLY TRANSFORMER FAILURE' SURVEY'ev Failure kV Rated BIL Coil Failure

~

N o.

H L

T MVA A e yrs.

Form

  • Phase Design Mode 16e 144-72-25-15 10 3 -

167 144-25-4.16-10 6

o 168 141.6-550 13.8 110 7.6-42 21 c -

3 c 169 141.6-550 13.8-110 7.6-42 10 c -

3 c 170 138-34.5 13.8 160 21 c -

3 c 171 115-550 25-150 24 27 c -

3 e o

172 115-13 8-24 11 c -

3 c 173 67-350 13.2 110 25 15 c -

3 e o

174 67-13.09-18 15 c -

3 c o

175 67-13.09-1.66 29 c 1

- c o

176 66-350 33-200 3.333 34 c 1 c'

177 66-350 33-200 3.333 34 c 1

- c 178 45-IF 12 17 c -

3 c o

179 43.5-13.09-7.5 14 c -

3 c o

180 36-13.8-30 18 c -

3 -

181 35-13 3 33 c 1

- c o

182 34 4-13.2-13 44 15 c -

3 c o

183 34 4.

13.2-13.44 17 3 c o

164 34 4-4.36-11.2 12 c -

3 c o

185 138 550 69-350 13.09-150 21 18 c -

3 e o

186 110-44.

12.47-33.3 16 s

3 e c

187 110-13.09-7.5 13 c -

3 c o

188 69-350 23-150 7.5 19 c -

3 e o

184 64-13.8-30 c -

3 -

190 69-350 12-110 20 14 c -

3 c o

191 60-350 12.5-110

8.. 20 c -

3 e o

192 23C-44-125 10 c -

3 -

193 66-350 23.9-150 6 17 c -

3 e 194 24-150 4.16-75

- 10 22 c -

3 e 195 13.8-50 4.16-25 3

7 c -

3 e o

19c 138-350 34.5-150 18 2

c -

3 e o

197 138-350 34.5-150 18 18 m c -

3 c o

198 67 350 4 16-75 20 1

c -

3 e o

199 23-480-3 13 e.

3.

o 200 46-7.2 -

1 66" 8

3 -

o 201 230-135-250 (1 c -

3 c

- ~-

202 69-1.L 28 16 c -

3 c c

203 34 5-13.5-

.5 e -

3 c 204 34.5-13.0C.

7 12 c -

3 e i o

205 34 4-200 4.3-200 9.375 15 c -

3 e o

20e 120-450 13.2-110 84 9

c -

3 e o

207 13.8-110 4.16-75 3.5 5

c.

3 e 208 4 16-

. 4&-

.5 5

c -

3 c 209 500-1300 230-650 448 4

c I e

210 34.5-13b-5 c -

3 c 211 138 550 69-350 13.2-110 60 8

c -

3-c o

212 138-550 69-350 13.2 110 60 13 c -

3 c o

213 138-550 69-350 13.2 110 60 13 c -

3 e o

214 138-550 69-350 13.2 110 30 14 c

3 e o

215 115-12.47-7.2-25 18 c

3 c o

216 69-12.47-25 12 c -

3 e o

217 69-12.47-25 12 c -

3 e o

218 34.4-4.36-5.6 17 c -

3 c o

+ -

  • s = she!!; e = core
  • c = circular coils; r - rectanFular coils
  • o = coil failure; + = core failure; * = other failure (leads etc.1 TORSioW A

Ab-i.

Oc. - 5

. _. =.

L._

1982 YEARLY TRANSFORMER FAILURE SURVEY Failrre kV-Rated BIL Coll Fallem N 3.

H L

T MVA Ase yrs-Fore

  • Phase Desisa Mode c -

3 c 219 344-4.36-11.2 IS '

o

+

3 c 10 20 o

+

220 34 4-13.2-c 7.5 221 34-4-

1 222 765-145-34.5-500 9

s o

223 765-345-34.5-500 9

s

- 1 o

369.6 8

s

- 1 224 500-22-o 369 6 9

s

- 1 225 500-22-r 369.6 9

5

- 1 226 500-22-r 227 345-115-13.8-74 17 s

3 c o

225 345-900 23-150 725 14 s

3 c o

c -

3 -

229 161-115-13.5-187 3

3 c 230 157-69-30 11 c

231 139.2-34.5-5.6 17 c -

3 e 12 16 s

3 c 232 138-550 13.8 110 o

12 14 c -

3 e 233 138-550 13.09-110 o

3 'c 234 120-450 13.2 110 16.8 24 c

c -

3 c 235 120-450 13.2 110 16.8 c -

3 c 23e 120-450 13.2 110 16.8 24 3 e 237 115-450 57-450 12.5-110 33.3 30 s

o 3

238 115-550 37.5 200 13.2 110 50 26 s

r o

3 -

r 239

!!S-34.5-40 25 s

240 115-450 23.5-150

!$ 17 3 e c

o 241 115-22-12 12 3 e c

o 242

!!5-350 13.2 110 56 11 c -

3 e o

243

!!5-350 13.2-110 7 13 c

3 c o

244 115-450 13.2-110 22A 18 c -

3 e c

245 115 4.36 12 15 c -

3 e o

246 113-13.5-12 3 -

247 70.6-13.5-7.5 56 c -

3 c c

243 69-350 24 94-150 7.5 15 c -

3 e o

249 6c-13.8-

.833 53 c !

c o

250 67-350 13.2-110 9.375 c -

3 c o

251 6c-13.0c-5.6 12 c

3 c o

252 6c-12.47-12 19 c -

3 c o

253 67-13

.5 27 c I

- c c

254 66 550 34 5-6 667 s

- 1 c

o 255 66-350 13.09-110

-75 28 12 c -

3 c o

25f do-13.2-20 14 c -

3 c o

25-46-2.4 1

c l

- c o

258 34.5-34.5-120 10 c -

3 c e

259 34.5-13.09-10.5 9

c -

3 c o

260 34.5-12-5 12 c

3 e o

261 34.5-12-5 14 c -

3 c o

262 34.5-12-5 17 c -

3 c o

263 34.5-12-

.833 13 c 1

- c o

264 34 4-4.365-10 33 s

3 -

r c

1 265 34.5-4-

3 75 30 m c

3 r

o 266 34.5-

.480-2.5 6 rr.

3 c c

267 34-34-250 9

s 3 -

268 34-12-6.25 269 34-12 6.25 270 33 S-6.25 28 c -

3 c

+

271 25.2-13.09-7.56 7 13 c

3 r

o 272 25-4-

2.5 23 c -

3 c o

273 25-4-

2.5 23 c -

3 e o

274 25-4-

2.0 25 c -

3 c o

  • s = shell; e = core

'c = circular coits; r - rectarigular coils

  • o = coil failure; + = core failure; * = other failure (leads, etc.I TRTO83

,_;_-___7__-_-__

==. - -- -~= ::-.:. -. :..'.K = '. :. :. - =.-. c :: ~~~-r.==.

-- -.=---

u - -

.'2 -?

.-.q...

....4..

..~%-.

1982 YEARLY TRANSFORf1ER FAILURE SURVEY Fall:re kV. Rated-BIL Coil Failure H

L T

MVA Age-yrs.

Form' Phase Design Mode

!?5 25-4-

2.5 25 c -

3 e o

276 23-12.5-5.0 7

c -

3 c o

a 3 e 3.75 20 c

277 23-12.5-o 3

278 22.9-12.47

$ 11 c

r o

3 e 12 10 c

279 16-4.16-280 14 4-

.480-I 1

c -

3 o

.~-

e c -

3 e 5.25 54 281 13.5-4.16-c -

3 c 7.5 25 282 13.2-44-c -

3 c 8 35 283 11-2.3-

  • s = shell; c = core

'c = circular coik: r. rectangular coih

'o = coil failure: * = core failure: * = other failure (leads etc )

To35if6Tra A

LN d

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