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TRANSCRIPT
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Transformer High Current Bushings
Type CFPT & CFCT
36kV
up to 40kA
IEC 60137-2008
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High current bushings for transformer
Features
Bushing Type CFPT
version PorcelainInsulator
Bushing Type CFCTversion CompositeInsulator
Trench RIG technology foroil-free, dry type bushings
Experience:
More than 10 000 pieces with this insulation in service for more
than 30 years (Generator Bushings with Ir max. 50kA)
Trench RIG technology (Resin Impregnated FiberGlass)
The active part consists of a solid core, made of fiber glass and
inserted concentric layers for the electrical field distribution.
The active part is impregnated under vacuum with a special epoxy
resin.
Advantages and benefits
Insulation (class F, 155C) according IEC 60085
Partial discharge
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TypeCF
PT&CFCT36kV
Comments
relatedtocolumns:
03:Bushing
stestvoltageat50Hz60sec.
07:Otherex
tensioncurrenttransformeronrequest
08,0
9:Brow
nglazedporcelain,
Graycoloronrequest
09:31mm/kVinstandard
12,1
3:L1
de
pendsonL4.
ThevaluesinthetablearevalidforL4=0mm.
IfL4>0mma
ddL4
toL1andL.
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
Highestvoltage(Um)
Maximumphasetoearthvoltage
BushingDryPowerfrequencyvoltage
withstand(AC)
TransformerPowerfrequencyvoltage
withstand(AC)
LightningImpulsewithstandvoltage
(BIL)
Ratedcurrent(Ir)
CTSpaceL4
ADArcingdistance(min.)
Standardcreepagedistance31mm/kV
MassApprox.
Cantilevertestload(min)
L
L1
L2
L4
D1
D2
D3
D4
D5
t
n
e
Numberofupperconnectionpads
Numberoflowerconnectionpads
Topterminal
Bottomterminal
Seeconnectionpage
kV
kV
kV
kV
kV
A
mm
mm
mm
kg
N
36
21
77
70
170
7800
340
1130
73
3150
855
320
535
0
220
290
335
265
390
15
12
22
4
1
2x18
4x18
page6
12000
1180
106
3150
855
320
535
0
300
400
450
345
490
20
12
22
6
2
2x18
4x18
page7
16000
1235
150
3150
855
320
535
0
400
535
590
445
590
22
16
22
10
2
2x18
6x18
page8
20000
1310
208
3150
855
320
535
0
525
620
680
570
730
22
16
22
14
2
2x18
8x18
page9
25000
1366
286
3150
855
320
535
0
625
720
780
670
830
22
16
22
16
2
2x18
12x18
page10
31500
1488
430
3150
1135
320
760
0
820
930
980
890
1050
22
24
25
22
2
2x18
16x18
page11
Standard:0,300
mm
mm
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Dimensional Drawing
D4
D1
L4
L1
L
L2
n xt
e
D5
D2
D3
3x45
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Standard Aluminum Connection 12000A
55
90
40
20
120
60
90
40
20
2
5
90
Air side
6 connections pads
Thickness 25mm
4x18
2x18
235 on pads
Oil side
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Standard Aluminum Connection 16000A
55
904
0
20
150
50
90
40
20
25
120
50
Air side
10 connections pads
Thickness 25mm
2x1
8
335 on pads
6x18
Oil side
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Standard Aluminum Connection 20000A
55
904
0
20
200
50
90
40
2050
25
120
50
460 on pads
2x18
Air side
14 connections pads
Thickness 25mm
8x18
Oil side
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Standard Aluminum Connection 31500A
250
30
55
904
0
20
480
60
90
40
2060 60 60 60 60 60
670 on pads
2x18
12x18
22 connections pads
Thickness 25mm
Oil side
Air side
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On Request
Every connection and interchangeability configuration can be done
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G1/4 Air Outlet
Test Tap
Springs Lock System
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Technical data request
Mark the requested value
Um 24kV
36kV
52kV
Other
...
Up Transfo 50kV
70kV
95kV
Other
...
BIL 125kV
170kV
250kV
Other
...
Rated Current 7800A
12000A
16000A
20000A
25000A
31500A
Other
...
CT Space 0mm
300mm
Other
...
Terminals Material Aluminum
Copper
Other
...
Maximum Oil Temperature 90
70
80
100
Other
...
Bus Duct 60
70
80
Other
...
Mounting Vertical
Horizontal
Other
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Trench France SAS16, rue du Gnral Cassagnou
B.P. 80070
F-68302 Saint-Louis Cedex France
Phone : +33 3 89 70 23 23
Fax : +33 3 89 70 23 59
www.trenchgroup.com40497231_00
Product Range
Bushings for
Power Transformers
up to 550 kV, 5000A
High Current Application
up to 52 kV, 40kA
Transformer to SF6
connection up to 550kV
Gas-insulated Switchgear
(GIS) up to 800 kV, 6000A
Generators
up to 36 kV, 50kA
Railways
Buildings , Wall
up to 245 kV, 5000A
Bushings according
Standard IEC 60137
Bushings according to
customers special specification
Quality
At Trench quality is a way of life.
Trench quality assurance
complies with the most stringent
standard of ISO 9001.
Certified by AFAQ since 1994
imprimerie de saint-louistroendl bieler
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
f h f b d f d h d d l