Bushings COT 24kV To 550kV [PDF]

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OIP Transformer Outdoor Bushings Type COT(C) 125…COT (C) 1800 24kV to 550kV up to 5000A IEC 60137-2008

Features If you need any transformer bushing proven in operation conditions around the world, Trench has it !

experience in manufacturing of bushings for more than 100 years

available with porcelain or composite insulator on air side

capacitive fine graded oilpaper insulation with long experience

inclination in service up to 30° from vertical. For COT(C) 125 and COT(C) 170 even horizontal operation is possible

computer optimized electrical field distribution proven high electrical withstand against transient or impulse stresses excellent long term stability due to extremely low partial discharge and power loss factor

horizontal transport for all types possible tan α and PD-values more than twice as good as requested by IEC 60137

oil immersed part covered by epoxy resin tube providing high impact resistance

current rating can easily be increased by exchanging the cable bolt with a removable split conductor on existing bushing

electrode embedded in the lower epoxy resin part - avoids external shielding - reduces distance to ground - lower transformer costs

To preserve our environment the free oil volume in COT-bushings is minimized

porcelain cemented into flange provides higher mechanical strength than level II of IEC

Certified ISO 9001

Transformer Bushings Type COT(C) 125 to COT(C) 1800

Substitute for E 322.81&E 322.91

Page 2 / 24

40497230_00

Cut view General design Design

10

1

2 1

Top terminal

Terminal (Aluminium or Copper) for connection of overhead lines or bus bars and arcing horns. Trench design provides a maintenance free termination and ensures that the connection will not become loose in service. 2

Assembly

The whole bushing is tightened together by the central tube or conductor. 3

Head

Al-casted head with oil expansion chamber and oil level indicator. The chamber is hermetically sealed against several environmental conditions. 4

Oil filling

COT bushings are filled with dried, degassed insulating mineral oil. 5

Insulator

Porcelain insulator made of high grade electrotechnical porcelain according to IEC 60815. The insulator is connected to the mounting flange using cement and sealed with O-ring gasket. instead of porcelain a composite insulator is also available.

Substitute for E 322.81&E 322.91

6

3

Active part

4

The active part is made of oilimpregnated wide band paper with layers of aluminium foil to control the electrical field radially and axially. Depending on the current rating, the paper and foil are wound on either a central tube or solid conductor 7

5

Flange

Mounting flange with integrated test tap made of corrosion free aluminium alloy, machined to ensure an excellent seal between the bushing and the transformer. 8

6

CT-Pocket

If current transformers are required on the bushing, the ground sleeve can be extended. 9

Oil side end

The insulator on the oil side is made of an epoxy resin tube. It is designed to stay installed during the in-tank drying process of the transformer and can withstand temperatures up to 130°C. 10

7

8

End-shielding

For voltages starting between 52kV & 300kV a special aluminium electrode is casted into the end of the epoxy resin tube. This end shielding controls the electrical field strength in this area to ground.

Page 3 / 24

9 10

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One of several TRENCH winding machines

Test tap for C and tan

Substitute for E 322.81&E 322.91

Page 4 / 24

measurement

40497230_00

High voltage test laboratory

Epoxy insulator with embedded end shield Cut view

Insulation See page 16

Cable

Substitute for E 322.81&E 322.91

Page 5 / 24

40497230_00

08

09

10

Highest voltage (Um)

Maximum phase to earth voltage

Bushing Dry Power frequency voltage withstand (AC)

Transformer Power frequency voltage withstand (AC)

Lightning Impulse withstand voltage (BIL)

Switching Impulse wet (SIL): 250/2500µs

Rated current (Ir)

Connection to Transformer

Cable cross section Conductor

kV

kV

kV

kV

kV

kV

A

36

14

21

55

77

50

125

70

170

/

/

800

cable )

1250

rem.Co-cond. )

35

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

800

52

30

105

95

250

/

COT 450

72,5

100

42

58

155

205

Comments related to columns 1…33: 1

09: ) Class F insulation

140

325

185

450

/

/

kg

N

235

600

22

2000

22

2000

28

2000

29

2000

32

2000

-

36

3150

*1116

31

2000

400

*1116

31

2000

400 1

cable ) 2

340

rem.Co-cond. )

35

*1116

38

2000

1600

fixed Co-cond.

-

*1116

44

2000

2500

fixed Co-cond.

-

*1116

49

2000

3150

fixed Co-cond.

-

*1116

53

3150

1300

26

2000

26

2000

35

2000

36

2000

54

3150

75

4000

31

2000

31

2000

800

cable

400 1

cable )

400 2

1250

rem.Co-cond. )

35

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

-

800

cable

400 1

1000

cable )

1250

rem.Co-cond. )

35

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

800

465

600

1820

400 2

cable

400

1

820

2540

400

40

2000

44

2000

62

3150

88

4000

40

2000

40

2000

52

2000

1000

cable )

1250

rem.Co-cond. )

35

1600

fixed Co-cond.

-

56

2000

2500

fixed Co-cond.

-

80

3150

3150

fixed Co-cond.

-

106

4000

2

04: Bushings test voltage at 50Hz 60 sec. 2

) Removable solid rod copper conductor

11: Extension for current transformer (other extensions on request)

Substitute for E 322.81&E 322.91

mm

1250

1000

COT 325

cable

15

mm

400 2

14

mm

400 1

1000

1000

COT 250

cable

13

/ kV

COT 170

24

12

25 mm 25mm/kV

COT 125

mm² mm

11

Cantilever test load (min)

07

Mass Approx.

06

Standard creepage distance

05

25mm/kV

04

AD Arcing distance (min.)

03

CT Space L4 see fig.3 page 12

02

Standard: 0, 300, 500

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

01

Type

N°

Type COT 125……450

Connection system see pages 17 to 23 13: * 31mm/kV in standard

Page 6 / 24

40497230_00

Type COT 125……450

Rated current (Ir)

08

16

17

18

19

20

21

22

24

25

26

27

28

29

30

31

32

33

L

L1

L2

L3

L6

L7

D

D2

D3

D4

D5

D6

D7 min

øt

n

e

see fig.

A 800 1000 1250 1600 2500 3150 800 1000 1250 1600 2500 3150 800 1000 1250 1600 2500 3150 800 1000 1250 1600 2500 3150 800 1000 1250 1600 2500 3150 12, 13: 15:

mm 761 761

140 140

621 621

452 452

761

140

621

729

140

589

729

140

729

140

895 895

mm

80 80

60 60

80 80

184 184

240 240

210 210

190 190

30 30

40 40

24 24

4 4

12 12

19 19

-

80

60

80

184

240

210

190

30

-

24

4

12

20

-

125

60

80

184

240

210

190

40

-

24

4

12

21

589

-

125

60

80

184

240

210

190

40

-

24

4

12

21

589

-

125

60

80

184

240

210

190

40

-

24

4

12

21

169 169

726 726

557 557

80 80

60 60

80 80

184 184

240 240

230 230

190 190

30 30

40 40

24 24

4 4

12 12

19 19

895

169

726

-

80

60

80

184

240

230

190

30

-

24

4

12

20

863

169

694

-

125

60

80

184

240

230

190

40

-

24

4

12

21

863

169

694

-

125

60

80

184

240

230

190

40

-

24

4

12

21

863

169

694

-

125

60

80

184

240

230

190

40

-

24

4

12

21

1090 1090

140 140

950 950

760 760

80 80

100 100

100 100

185 185

225 225

200 200

170 170

30 30

35 35

16 16

6 6

14 14

22 22

1090

140

950

-

80

100

100

185

225

200

170

30

-

16

6

14

23

1135

140

995

-

125

100

100

185

225

200

170

40

-

16

6

14

24

1095

140

955

-

125

110

120

200

240

231

170

60

-

22

6

15

25

1105

140

965

-

125

110

130

290

335

242

170

60

-

16

12

16

26

1210

175

1035

845

80

100

100

185

225

210

170

30

35

16

6

14

22

1210 1210

175 175

1035 1035

845 -

80 80

100 100

100 100

185 185

225 225

210 210

170 170

30 30

35 -

16 16

6 6

14 14

22 23

1255

175

1080

-

125

100

100

185

225

210

170

40

-

16

6

14

24

1275

175

1100

-

125

110

120

200

240

231

170

60

-

22

6

15

25

1285

175

1110

-

125

110

130

290

335

242

170

60

-

16

12

16

26

1503 1503

230 230

1273 1273

1085 1085

80 80

100 100

100 100

185 185

225 225

210 210

170 170

30 30

35 35

16 16

6 6

14 14

22 22

1503

230

1273

-

80

100

100

185

225

210

170

30

-

16

6

14

23

1548

230

1318

-

125

100

100

185

225

210

170

40

-

16

6

14

24

1543

230

1313

-

125

110

120

200

240

231

170

60

-

22

6

15

25

1553

230

1323

-

125

110

130

290

335

242

170

60

-

16

12

16

26

Brown glazed porcelain, other colours and Other creepage distances upon request According to IEC 137 level II or better

Substitute for E 322.81&E 322.91

16, 17: 24, 25, 29, 32:

L1 depends on L4. The values in the table are valid for L4= 0mm. If L4>0mm add L4 to L1 and L. Other dimensions on request.

Page 7 / 24

40497230_00

255

230

550

kV

10

Rated current (Ir)

Connection to Transformer

Cable cross section Conductor mm² mm

A

/

800

cable

11

13

14

15

mm

mm

mm

kg

N

1050

3100

62

3150

400 1

12

Cantilever test load (min.)

kV

09

Mass Approx.

71

kV

08

Standard creepage distance

123

kV

07

AD Arcing distance (min.)

COT 550

06

Switching Impulse wet (SIL): 250/2500µs

Maximum phase to earth voltage kV

05

Lightning Impulse withstand voltage (BIL)

Highest voltage (Um) kV

04

Transformer Power frequency voltage withstand (AC)

03

Bushing Dry Power frequency voltage withstand (AC)

02

CT Space L4 see fig.3 page 12

01

01

Type

N°

Type COT 550……1050

02

1000

cable )

400

62

3150

03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1250

rem.Co-cond.2)

35

74

3150

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

COT 750

170

84

98

305

355

275

325

650

/

750

800

COT 1050

245

300

142

173

505

560

460

510

1050

1050

400

1000

1

cable )

400

1250

rem.Co-cond.2)

35

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

-

/

800 1000

COT 1050

-

cable

cable

400 1

cable )

500 2

1250

rem.Co-cond. )

35

1600

fixed Co-cond.

-

2500

fixed Co-cond.

-

3150

fixed Co-cond.

-

750

800

cable

400 1

1250

1460

4000

173

4000

81

3150

81

3150

3625

98

3150

101

3150

190

4000

198

4000

92

4000

92

4000

111

4000

117

4000

315

5000

223

5000

236

4000

4250

*5270 2150

3150

25mm / kV

145

Standard: 0, 300, 500

COT 650

79

165

6125

750

1000

cable )

500

236

4000

750

1250

rem.Co-cond.2)

38

266

4000

750

1600

fixed Co-cond.

-

285

4000

750

2500

fixed Co-cond.

-

328

5000

750

3150

fixed Co-cond.

332

5000

850

1000

Cable

350

5000

850

1600

fixed Co-cond.

-

440

5000

850

2500

fixed Co-cond.

-

445

5000

630

2400

7500

Comments related to columns 1…33: 04: Bushings test voltage at 50Hz 60 sec.

09: 1) Class F insulation

11: Extension for current transformer (other extensions on request)

2

) Removable solid rod copper conductor

Connection system see pages 17 to 23

13: * 31mm/kV in standard

Substitute for E 322.81&E 322.91

Page 8 / 24

40497230_00

Type COT 550……1050

Rated current (Ir)

08

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

L

L1

L2

L3

L6

L7

D

D1

D2

D3

D4

D5

D6

D7 min

øt

n

e

see fig.

A

mm

800 1000 1250 1600 2500 3150

1805 1805

310 310

1495 1495

1306 1306

1805

310

1495

1850

310

1540

2089

310

2052

310

800 1000 1250 1600 2500 3150

2055 2055

800 1000 1250 1600 2500 3150

mm

80 80

110 110

120 120

-

250 250

290 290

231 231

170 170

30 30

35 35

16 16

8 8

15 15

27 27

-

80

110

120

-

250

290

231

170

30

-

16

8

15

28

-

125

110

120

-

250

290

231

170

40

-

16

8

15

29

1779

-

125

195

175

-

290

290

295

300

60

-

20

12

20

30

1742

-

125

195

175

-

400

450

295

300

60

-

22

12

22

31

360 360

1695 1695

1506 1506

80 80

110 110

130 130

-

290 290

335 335

242 242

170 170

30 30

35 35

16 16

12 12

16 16

27 27

2055

360

1695

-

80

110

130

-

290

335

242

170

30

-

16

12

16

28

2100

360

1740

-

125

110

130

-

290

335

242

170

40

-

16

12

16

29

2339

360

1979

-

125

195

175

-

290

335

295

300

60

-

20

12

20

30

2302

360

1942

-

125

195

175

-

400

450

295

300

60

-

22

12

22

31

2325 2325

420 420

1905 1905

1716 1716

80 80

110 110

130 130

-

290 290

335 335

242 242

170 170

30 30

35 35

16 16

12 12

16 16

27 27

2325

420

1905

-

80

110

130

-

290

335

242

170

30

-

16

12

16

28

2370

420

1950

-

125

110

130

-

290

335

242

170

40

-

16

12

16

29

2609

420

2189

-

125

195

175

-

290

335

335

300

60

-

20

12

20

30

2572

420

2152

-

125

195

175

-

400

450

295

300

60

-

22

12

22

31

800 1000 1250 1600 2500 3150

3518

684

2834

2500

80

195

175

-

400

450

295

300

30

40

22

12

22

32

3518 3518

684 684

2834 2834

2500 -

80 80

195 195

175 175

-

400 400

450 450

295 295

300 300

30 30

40 -

22 22

12 12

22 22

32 33

3563

684

2879

-

125

195

175

-

400

450

295

300

40

-

22

12

22

34

3563

684

2879

-

125

195

200

-

400

450

340

300

60

-

22

12

22

35

3407

684

2842

-

125

195

200

-

400

450

340

300

60

-

22

12

22

36

1000 1600 2500

3813 3813

684 684

3129 3129

2750 -

80 125

195 195

200 200

-

400 400

450 450

350 350

300 300

40 40

55 -

22 22

12 12

22 22

37 38

3742

650

3092

-

125

195

200

-

400

450

350

300

50

-

22

12

22

39

12, 13:

Brown glazed porcelain, other colours and Other creepage distances upon request According to IEC 137 level II or better

15:

Substitute for E 322.81&E 322.91

16, 17: 24, 25, 29, 32:

L1 depends on L4. The values in the table are valid for L4= 0mm. If L4>0mm add L4 to L1 and L. Other dimensions on request.

Page 9 / 24

40497230_00

09

10

Cable cross section Conductor

kV

kV

A

362

209

560

510

1175

950

1000

cable

02

1600

03

15

mm

kg

N

630

2800

9115

480

5000

Fixed cond.

-

2800

2500

Fixed cond.

-

2800

1000

cable

630

2800

05

1600

Fixed cond.

-

2800

06

2500

Fixed cond.

-

2800

1000

cable

630

3300

08

1600

Fixed cond.

-

09

2500

Fixed cond.

-

1000

cable

11

1600

Fixed cond.

-

12

2500

Fixed cond.

-

1000

cable

14

1600

15

04

07

10

13

COT 1175

COT 1300

COT 1425

COT 1550

420

550

243

318

695

750

630

680

1425

1550

1050

1175

5000

530

5000

560

5000

*13750

865

5000

3300

*13750

930

5000

3300

*13750

990

5000

3800

14350

940

5000

1000

5000

1030

5000

980

5000

1060

5000

1100

5000

1050

5000

1150

5000

1200

5000

3800 3800

Fixed cond.

-

3800

1000

cable

630

4200

17

1600

Fixed cond.

-

4200

18

2500

Fixed cond.

-

4200

1800

1175

630

500

2500 790

1675

950

3800

870

680

1300

-

318

750

570

Fixed cond.

550

318

625

3800

COT 1800

550

209

5000

630

16

COT 1675

362

5000 540

9115

25 mm / kV

01

25m m/kV

mm

mm² mm

Standard: 0, 300, 500

mm

N°

Cantilever test load (min)

kV

14

Mass Approx.

kV

13

Standard creepage distance

kV

12

AD Arcing distance (min.)

kV

11

CT Space L4 see fig.3 page 12

Rated current (Ir)

08

Switching Impulse wet (SIL): 250/2500µs

07

Lightning Impulse withstand voltage (BIL)

06

Connection to Transformer

05 Transformer Power frequency voltage withstand (AC)

04 Bushing Dry Power frequency voltage withstand (AC)

03

Maximum phase to earth voltage

02

Highest voltage (Um)

01

Type

Type COT 1175……1800

14350

14350

Comments related to columns 1…33: 04: Bushings test voltage at 50Hz 60 sec.

11: Extension for current transformer (other extensions on request)

Connection system see pages 17 to 23

13: * 31mm/kV in standard for Type COT 1425

Substitute for E 322.81&E 322.91

Page 10 / 24

40497230_00

Type COT 1175……1800

Rated current (Ir)

08

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

L

L1

L2

L3

L6

L7

D

D1

D2

D3

D4

D5

D6

D7

øt

n

e

see fig.

A

mm

mm

1000

4270

720

3550

3240

125

250

235

-

400

450

390

330

40

55

22

12

22

40

1600

4230

720

3510

-

125

250

235

-

400

450

390

330

40

-

22

12

22

41

2500

4230

720

3510

-

125

250

235

-

400

450

390

330

40

-

22

12

22

41

1000

4270

720

3550

3240

125

250

235

-

400

450

390

330

40

55

22

12

22

40

1600

4230

720

3510

-

125

250

235

-

400

450

390

330

40

-

22

12

22

41

2500

4230

720

3510

-

125

250

235

-

400

450

390

330

40

-

22

12

22

41

1000

5055

820

4235

3995

125

280

291

380

530

590

477

400

40

68

23

12

25

42

1600

4965

820

4145

-

125

280

291

380

530

590

477

400

40

-

23

12

25

43

2500

4965

820

4145

-

125

280

291

380

530

590

477

400

50

-

23

12

25

43

1000

5790

1055

4735

4495

125

280

291

380

530

590

455

500

40

68

23

12

25

42

1600

5700

1055

4645

-

125

280

291

380

530

590

455

500

40

-

23

12

25

43

2500

5700

1055

4645

-

125

280

291

380

530

590

455

500

50

-

23

12

25

43

1000

5935

1200

4735

4495

125

280

291

380

530

590

455

500

40

68

23

12

25

42

1600

5845

1200

4645

-

125

280

291

380

530

590

455

500

40

-

23

12

25

43

2500

5845

1200

4645

-

125

280

291

380

530

590

455

500

50

-

23

12

25

43

1000

6345

1200

5145

4895

125

280

291

380

530

590

455

500

40

68

23

12

25

42

1600

6245

1200

5045

-

125

280

291

380

530

590

455

500

40

-

23

12

25

43

2500

6255

1200

5055

-

125

280

291

380

530

590

455

500

50

-

23

12

25

43

12, 13:

Brown glazed porcelain, other colours and Other creepage distances upon request According to IEC 137 level II or better

15:

Substitute for E 322.81&E 322.91

16, 17: 24, 25, 29, 32:

L1 depends on L4. The values in the table are valid for L4= 0mm. If L4>0mm add L4 to L1 and L. Other dimensions on request.

Page 11 / 24

40497230_00

Dimensional Drawing D6

View A

L6

D5

L3 L2

AD

Fig. 1

Fig. 2

L

D4

COT 550…1050 (Um =245kV), 3150 A COT 1050 (Um=300kV), 2500A COT 1175 … 1800

e L7

L4 D1 Only for COT ≥ 420 kV

L1

≥ 30 L1

D7 Fig. 3

Substitute for E 322.81&E 322.91

D Fig. 4

Page 12 / 24

Fig. 5

40497230_00

Porcelain and composite insulator Porcelain Insulator (Type COT) Brown color (RAL 8016)

Composite Insulator (Type COTC)

Gray color (ANSI gray N70)

D4

Alternate sheds (ANSI gray N70)

D4

Helicoil sheds (ANSI gray N70)

D4

D4

All COT(C) can be equipped with silicone rubber insulators upon request without affecting dimensions except D4

Substitute for E 322.81&E 322.91

Page 13 / 24

40497230_00

Standard Oil level indicator COT 125, COT 170

Oil level indicator COT 250 … COT 1050

Ø20

Ø60 Fig. 6

Fig. 7

Test tap (2kV)

Air escape screw

O-ring gasket

22 6

Multiple spring contact

Flat gasket

Fig. 8

Substitute for E 322.81&E 322.91

Fig. 9

Page 14 / 24

40497230_00

Options Magnetic oil level indicator (Ø95) COT 250 … COT 1800

Arcing horns

Type

S min

max mm

COT 125

-

-

COT 170

-

-

COT 250

220

270

COT 325

300

390

COT 450

430

520

COT 550

420

650

COT 650

500

750

COT 750

500

850

COT 1050

750

1200

Fig. 10

Fig. 11

Voltage tap according to ANSI/IEEE (20kV)

Oil sampling device Valve

Multiple spring contact

Fig. 12

Substitute for E 322.81&E 322.91

S

Fig. 13

Page 15 / 24

40497230_00

Recommendations for lead out arrangement Embedded shield

External shield

These bushings are equipped on the lower end with a cone shaped epoxy resin tube and an embedded electrode. Therefore, additional barriers or electrodes may be omitted and distance to ground is reduced

R1

R

S

Oil conditions: Mineral oil with less than 10ppm water content and dielectric strength higher than 60kV (acc. to IEC 60156) Fig. 14

Fig. 15

Draw lead insulation COT 550…750

Cable insulation and distance to grounded parts

COT 1050 Ø40

Ø35,7

Type

Min. insulation thickness S

Min. distance to grounded parts R

R1

mm

28

50

S 15°

30°

S Ø80 (Um=245kV) Ø94 (Um=300kV)

Fig. 16

Substitute for E 322.81&E 322.91

COT 125

5

65

-

COT 170

5

75

-

COT 250

10

85

-

COT 325

10

120

-

COT 450

12

135

-

COT 550

12

145

250

COT 650

15

180

275

COT 750

15

225

300

COT 1050

20

300

375

COT 1175 to COT 1800

-

-

See spec 40497124

Fig. 17

Page 16 / 24

40497230_00

Removable split conductor COT 125 … COT 1175 1250 A Cable bolt

Removable split conductor

30 3 fixing screws

Position of standard split conductor. Others positions on request

30 Ø29

Fig. 18

Oil side end COT 125, COT 170 1600 … 3150A

… 1250A

… 1000A Ø40

Ø40

30 Ø29

125

8

Conductor Ø35

Ø80

Ø80 Cable

Ø40

Fig. 19

Substitute for E 322.81&E 322.91

Removable copper conductor

Page 17 / 24

Ø80 Fig. 20

Fixed copper-conductor

Fig. 21

40497230_00

Oil side end COT 250 … COT 450 … 1600 A

… 1250A

… 1000A

30

Ø29

8

90

Conductor Ø35 Ø35,7 Ø35 Ø80 Cable

Ø80 Removable copper conductor

Fig. 22

Ø80 Fig. 23

Fixed copper-conductor

… 3150A

… 2500A

125

125

Ø40

Ø40

Ø94

Ø104

Fixed copper-conductor

Substitute for E 322.81&E 322.91

Fig. 24

Fixed copper-conductor

Fig. 25

Page 18 / 24

Fig. 26

40497230_00

Oil side end COT 550 … COT 750 … 1600 A

… 1250A

… 1000A

30 41

28 Ø29

15°

90

Conductor Ø35 Ø35,7 Ø35 Ø68 Cable

Ø68

Ø68

Removable copper conductor

Fig. 27

Fig. 28

Fixed copper-conductor

Fig. 29

… 3150A

… 2500A

15° 22,5

125 125

150

195

Ø40 Ø86

Ø40

Ø114

Ø160 Ø240

Fixed copper-conductor

Substitute for E 322.81&E 322.91

Fig. 30

Fixed copper-conductor with removable screwed shield Fig. 31

Page 19 / 24

40497230_00

Oil side end COT 1050, Um = 245 kV … 1600 A

… 1250A

… 1000A

30°

30

14

78

50 Ø29

Ø40

90

25° Conductor Ø38

Ø80

Ø119

Ø119

Ø119 Cable

Ø35

Removable copper conductor

Fig. 32

Fixed copper-conductor

Fig. 33

Fig. 34

… 3150A

… 2500A

230

125

125

170

Ø40

Ø40 Ø95

Ø180 Ø260

Ø134 Fixed copper-conductor

Substitute for E 322.81&E 322.91

Fig. 35

Fixed copper-conductor with removable screwed shield Fig. 36

Page 20 / 24

40497230_00

Oil side end COT 1050, Um = 300 kV … 1000A

… 1600A

30°

14

50

Ø55

90 25° Ø35

Ø95

Ø95

Ø134

Ø134

Cable

Fixed copper-conductor

Fig. 37

Fig. 38

… 2500A

230

125 170

Ø40 Ø180 Ø260 Fixed copper-conductor with removable screwed shield

Substitute for E 322.81&E 322.91

Page 21 / 24

Fig. 39

40497230_00

Oil side end COT 1175 … 1300 … 1000A

… 1600A

120 80

Ø55 Ø110

Ø125

Ø190 Cable with fixed shield

Oil side connector according to customer request Fixed conductor

Fig. 40

Fig. 41

COT 1425 … 1800 … 1000A

… 1600A

Ø68

280 210

Ø160

Ø210

Ø160

Ø330 Cable with fixed shield

Substitute for E 322.81&E 322.91

Oil side connector according to customer request Fixed conductor

Fig. 42

Page 22 / 24

Fig. 43

40497230_00

Oil side end : External shields

FIXED SHIELD

SHIELD WITH BAYONET SYSTEM

ØD

3 x M6 depth 15mm equidistant on a drilling diameter D Fig. 44

SCREWED SHIELD

A

Detail A

Connection according to customer drawing Fig. 45

Substitute for E 322.81&E 322.91

Fig. 46

Page 23 / 24

40497230_00

Product Range

Quality

Bushings for

At Trench quality is a way of life. Trench quality assurance complies with the most stringent standard of ISO 9001.

• Power Transformers up to 550 kV, 5000A • High Current Application up to 52 kV, 40000 A

Certified by AFAQ since 1994

• Transformer to SF6 connection up to 550kV • Gas-insulated Switchgear (GIS) up to 800 kV, 6000A • Generators  up to 36 kV, 50000 A • Railways • Buildings , Wall up to 245 kV, 5000 A • Bushings according Standard IEC 60137 • Bushings according to customer’s special specification

Trench® China MWB (Shanghai) Co., Ltd No. 3658, Jiancheng Road Minhang, Shanghai Peoples Republic of China 200245 Phone : +86-21-54720088 Fax : +86-21-54723118

Trench® Limited Bushing Division

432 Monarch Avenue Ajax, Ontario Canada L1S 2G7 Phone : +905-426-2665 Fax : +905-426-2671

Trench® France SAS

16, rue du Général Cassagnou B.P.80070 F-68302 Saint-Louis Cedex France Phone : +33 3 89 70 23 23 Fax : +33 3 89 70 23 59 imprimerie de saint-louis troendlé bieler

substitute for E 322.81&E 322.91

40497230_00

www.trenchgroup.com

[email protected]

All rights reserved. Brands and trademarks used in this document are the property of Trench® Subject to change without prior notice. The information in this document contains general descriptions of the technical options which are not necessarily available in every single case. The required features must therefore be defined in each individual case when concluding the contract.