30 0 2MB
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
40497230_00
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
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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
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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
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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
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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
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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
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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
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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
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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.