— MICAFIL High Current Transformer Bushings HIRIP / RTXF 36kV up to 40kA — MICAFIL High Current Transformer Bushings HIRIP / RTXF 36kV up to 40kA • MICAFIL HIRIP bushings build on 100 years of experience to deliver total safety and reliability over an extended service life that ensures maximum asset availability. • Standard and customized designs offer the flexibility to suit a wide variety of customer applications, while the bushings remain partial discharge free even when operating at twice the nominal service voltage.
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MICAFIL High Current Transformer Bushings HIRIP / RTXF ... · IEC 60137 (2017) IEEE C57.19.01 (2000) Current Total Oil side Air side Flange Air side terminal Oil side terminal Rod
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—MICAFIL High Current Transformer BushingsHIRIP / RTXF 36kV up to 40kA
—
MIC
AFI
L H
igh
Cur
rent
Tra
nsfo
rmer
Bus
hing
sH
IRIP
/ R
TX
F 36
kV u
p t
o 4
0kA
• MICAFIL HIRIP bushings build on 100 years of experience to deliver total safety and reliability over an extended service life that ensures maximum asset availability.
• Standard and customized designs offer the flexibility to suit a wide variety of customer applications, while the bushings remain partial discharge free even when operating at twice the nominal service voltage.
2 M I C A F I L H I G H CU R R E NT TR A N S FO R M E R B U S H I N G S H I R IP/RT X F 3 6 K V U P TO 4 0 K A
ABB Switzerland’s MICAFIL bushings factory, based in Zurich, developed the first Resin Impregnated Paper (RIP) bushings in the 60’s, along with traditional OIP (Oil Impregnated Paper) and RBP (Resin Bonded Paper) bushings. Subsequently, we were the first company worldwide to start production of 420 kV RIP bushings at the end of the 80’s and 550 kV RIP bushings in 1996. Today, and for the last 30 years, we have exclusively produced RIP bushings. The latest new paperless RIS (Resin Impregnated Synthetics) technology launched in 2012.
ABB Switzerland Ltd, Insulation and Components has access to comprehensive resources, especially in the areas of high-voltage engineering, materials research and applied physics. The continuously improved design of our RIP high voltage bushings sets new standards regarding quality, reliability and safety.
We would like to support electrical utilities with achieving increasingly efficient performance of their assets, in addition to the ambitious targets of improved availability, higher safety standards
MICAFIL RIP bushing advantages• Excellent electrical and thermal properties• Partial discharge-free up to double
service voltage• High temperature resistance (class E, 120°C)• Low dielectric losses (tan δ ≤0.40 %)
Superb design• Compact conductor design• The materials are selected to provide the lowest
possible environmental impact over the whole product life cycle
Highest operational safety• Installation, transportation and operation
permitted in any position• Completely dry bushing, meaning no oil leakage
and lowest risk of explosion
Maintenance free• Maintenance and inspection-free bushing• A measuring tap allows for the assessment of
the insulation condition (capacitance and dissipation factor)
Standards• MICAFIL RIP high current bushings are specified
and tested according to the latest IEC 60137 (2017) and IEEE C57.19.00/01 (2000) standards
Benefits of the HIRIP series• Reduced number of components• High mechanical rigidity• Operation at low temperatures, down to -60°C• No joints (welding/brazing) in the current path
straight-through design• Smooth transition from the round hollow
conductor to the parallel terminals reduces the electrical resistance
• The integrated terminal pads of the conductor guarantee a better current distribution in the aluminum conductor
• Very long creepage distance • Integrated cooling ribs, mechanically protected
and cost reduction. Most utilities worldwide now recognize that our RIP technology makes a valuable contribution to achieving overall better performance figures. It is well worthwhile taking a brief look at the technical details of MICAFIL’s RIP technology.
MICAFIL RIP bushing technology The bushing condenser body consists of a solid core, made of wound crepe paper and inserted aluminum foils for electrical field control. The paper winding is vacuum dried and subsequently impregnated under vacuum with a high-temperature epoxy resin.
Vacuum drying, the impregnation of the paper winding with epoxy resin, and the final curing are very sensitive processes. They are carried out under vacuum in a controlled and hermetically sealed environment.
We are proud of our leading position in this technology field, providing our customers with profound expertise in the latest state-of-the-art technology, based on over 120,000 RIP bushings successfully in operation.
—High-voltage test laboratory up to BIL 1050 kV.
—Leading edge technology
MICAFIL brand products are the world leader in RIP and RIS technology for oil-free, dry bushings.
—High current transformer bushing in detail
Cross-section of the HIRIP bushing1 .Aluminum conductor 1a. Silver plated terminals (air side)1b. Silver plated terminals (oil side)2. Porcelain insulator3. Dry filling Micagel4. RIP condenser core5. Mounting flange with integrated measuring tap6. Current transformer extension (L6), if required
3
1a
1
2
3
4
5
6
1b
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y210
0
44.4
525
.4
44.45
1/2" UNC-2B
y2
M1220
40
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O
20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
85
50 y2 50 2040 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
ØD1+10
L6
L
131.
5L2
ØD6
A
O20
L1 +
L6
178
70
ØD1ØD2
ØD5
c1
c1
(b1)
ØD3
ØD4
(b2)
(b2)
c2
y1M12 (h1)
4020
85
y1
100
25.4
44.4
5
h1
1/2" UNC-2B (h1)
y2
100
44.4
525
.4
44.45
1/2" UNC-2B
y2
100
44.4
525
.444.45
1/2" UNC-2B
y2
M12
2040
(h2) (h2)
(h2) (h2)
8550 y2 50 20
40 85
M12
ØD2
ØD8
19
5x45
°
nxØv
Sealing area
4 M I C A F I L H I G H CU R R E NT TR A N S FO R M E R B U S H I N G S H I R IP/RT X F 3 6 K V U P TO 4 0 K A
—Dimensions —
Vacuum impregnation and casting vessels.
Fig 1
Fig 20a
Fig 30a
Fig 10
Fig 20b
Air side terminal Oil side detail
Fig 30b
Fig 20c
Fig 30c
Terminal geometry (version 2)
Terminal geometry (version 1)
FlangeBushing details Flange details
Air side terminal Oil side terminal
6 M I C A F I L H I G H CU R R E NT TR A N S FO R M E R B U S H I N G S H I R IP/RT X F 3 6 K V U P TO 4 0 K A 7
—Technical data
Notes:1. Reference current with current transformer extension = 0 mm, maximum daily mean oil temperature = 90 °C
and maximum daily mean air temperature = 70 °C in bus duct, frequency = 50Hz 2. Recommended for 48mm wide flexible connector
Common specifications
Please consult ABB Switzerland Ltd, High Voltage Components for conditions that are outside of the standard specification below.
Application Generator step-up-transformersClassification Dry, Resin Impregnated Paper (RIP), capacitive gradedDry filling MicagelAmbient temperature -60°C, minimum value acc. to temperature class 2 of IEC60137 (2017) Bus duct air temperature see Fig. 100 – 117Altitude of installation max. 1000 mPollution level HeavyMounting angle Vertical up to horizontalMarkings According to IEC/IEEE
Type and DrawingsElectrical characteristics Insulator
dataMechanical
designWeight
Dimensions
IEC 60137 (2017) IEEE C57.19.01 (2000) Current Total Oil side Air side Flange Air side terminal Oil side terminal
Rod conductor bushings
Out
line
dra
win
g nu
mb
er
Bus
hing
dim
ensi
ons
Rat
ed v
olt
age
Phas
e-to
-ear
th
AC
tes
t vo
ltag
e d
ry /
wet
Lig
htni
ng im
pul
se
volt
age,
1.2
/50
μs
No
min
al s
yste
m v
olt
age
Rat
ed m
ax. l
ine-
to-g
roun
d vo
ltag
e
AC
tes
t vo
ltag
e d
ry /
wet
Lig
htni
ng im
pul
se
volt
age,
1.2
/50
μs
Ref
eren
ce c
urre
nt N
ote
1
Max
imum
op
erat
ing
curr
ent
The
rmal
sho
rt-t
ime
curr
ent
Min
. cre
epag
e d
ista
nce
Min
. Arc
ing
dis
tanc
e
Can
tile
ver
test
load
1 m
in.
Can
tile
ver
op
erat
ing
load
Wei
ght
Bus
hing
leng
th w
ith
term
inal
s
Cur
rent
tra
nsfo
rmer
ex
tens
ion
(CT
)
Low
er c
ore
leng
th
Co
re d
iam
eter
Air
sid
e le
ngth
of
the
bus
hing
Max
. Hea
d d
iam
eter
Max
. She
d d
iam
eter
Pit
ch c
ircl
e d
iam
eter
Out
sid
e fl
ang
e d
iam
eter
Seal
ing
area
: min
. dia
met
er
Seal
ing
area
max
. dia
met
er
Num
ber
of
hole
s
Ho
le d
iam
eter
Flan
ge
dim
ensi
ons
Min
. air
sid
e te
rmin
al t
hick
ness
Term
inal
pad
dis
tanc
e (a
ir s
ide)
Min
. air
sid
e co
nnec
tio
n ar
ea w
idth
Num
ber
of
air
sid
e co
nnec
tio
n su
rfac
es e
ach
No
te 2
Term
inal
ver
sio
n 1
Term
inal
ver
sio
n 2
Min
. oil
sid
e te
rmin
al t
hick
ness
Wid
th o
f te
rmin
al a
rea
(oil
sid
e)
Min
imum
oil
sid
e co
nnec
tio
n ar
ea w
idth
Num
ber
of
oil
sid
e co
nnec
tio
n su
rfac
es e
ach
No
te 2
Term
inal
ver
sio
n 1
Term
inal
ver
sio
n 2
Um Um/√3 AC BIL Usys UL-G AC BIL Ith 2sec L L6 L16 D1 L2 D5 D6 D3 D4 D2 D8 n v b1 c1 h1 y1 (b2) c2 (h2) y2
Fig. kV kV kV kV kV kV kV kV kA Fig. kA mm mm N N kg mm mm mm mm mm mm mm mm mm mm mm - mm Fig. mm mm mm - Fig. Fig. mm mm mm - Fig. Fig.
8 M I C A F I L H I G H CU R R E NT TR A N S FO R M E R B U S H I N G S H I R IP/RT X F 3 6 K V U P TO 4 0 K A 109
—Operating current diagrams
The rating plate current value, also given in the designation of the MICAFIL high current bushing, is a reference current and not the permissible current for the bushing. The permissible current depends on the temperature conditions around the bushing. Based on the temperature of the surrounding transformer oil and the ambient temperature of the air side of the bushing, one can calculate the permissible current by using the diagrams in Fig. 100 to 117.
4.5
70
60
80
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
L6 = 0
I r (kA
)
Tair (°C)
4.5
70
60
80
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
L6 = 100
I r (kA
)
Tair (°C)
4.5
4.0 4.0 4.0
70
60
8090
90
90
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
70 80 90 100
Toil (°C)
70 80 90 100
Toil (°C)
70 80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
10.0
70
70
60
80
80 90 100
11.0
12.0
13.0
14.0
16.0
15.0
18.0
17.0
19.0
20.0
10.0
11.0
12.0
13.0
14.0
16.0
15.0
18.0
17.0
19.0
20.0
10.0
11.0
12.0
13.0
14.0
16.0
15.0
18.0
17.0
19.0
20.0
Toil (°C)
L6 = 0
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 100
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
7.0
70
60
80
8.0
9.0
10.0
11.0
12.0
13.0
14.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0L6 = 0
I r (kA
)
Tair (°C)
70
60
80
L6 = 100
I r (kA
)
Tair (°C)
70
60
8090
90
90
70 80 90 100
6.0 6.0 6.0
Toil (°C)
70 80 90 100
Toil (°C)
70 80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
27.0
26.0
25.0
24.0
23.0
22.0
21.0
20.0
19.0
18.0
17.0
16.0
28.0
27.0
26.0
28.0
27.0
28.0
25.0
24.0
23.0
22.0
21.0
20.0
19.0
18.0
17.0
16.0
15.0
14.0
26.0
24.0
23.0
22.0
21.0
20.0
19.0
18.0
17.0
16.0
15.0
14.0
13.013.0
15.0
14.0
13.0
25.0
Toil (°C)
L6 = 0
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 100
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
Tair – maximum daily mean ambient temperature on the air side of the bushing. This depends on the type of installation. Usually, a busduct is used to encapsulate the bushing.
Toil – maximum daily mean temperature of the oil around the bushing (With forced cooling Toil is often relatively low compared to the maximum allowed temperature given in transformer standards).
L6 – current transformer extension
f – 50/60Hz
If all the connection pads are not occupied, the current could be limited, since the neighbour conductor will also influence the thermal behavior of the bushing.
—Condenser cores with a max. length of 9m can be produced.
12 M I C A F I L H I G H CU R R E NT TR A N S FO R M E R B U S H I N G S H I R I P/RT X F 3 6 K V U P TO 4 0 K A 1311
70
70
60
80
80 90 100
30.0
28.0
26.0
24.0
22.0
32.0
30.0
32.0
30.0
32.0
28.0
26.0
24.0
22.0
20.0
18.0
16.0
20.0
18.0
16.0
28.0
26.0
24.0
22.0
20.0
18.0
16.0
Toil (°C)
L6 = 0
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 100
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
70
70
60
80
80 90 100
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
24.0
26.0
22.022.022.0
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
Toil (°C)
L6 = 0
I r (kA
)
Tair (°C)
70
70
70
60
60
80
80
80 90 100
Toil (°C)
L6 = 100
I r (kA
)
Tair (°C)
70 80 90 100
Toil (°C)
L6 = 300
I r (kA
)
Tair (°C)
—Ordering information
—Other MICAFIL RIP and RIS bushings
RIP transformer bushings, oil-air
Series: AirRIP / RTKF KSISilicone composite insulator available with straight or helical shedsVoltage range: from 24 to 550 kVCurrent range: up to 5000 A
Series: AirRIP / RTKFPorcelain insulatorVoltage range: from 24 to 550 kVCurrent range: up to 5000 A
Series: SeismicRIP® / RTKF KSISilicone composite insulatorVoltage range: from 69 to 550 kVCurrent range: up to 5000 AStandard: IEEE 693 (2005) and IEC 61263 (2016)High seismic performance level
Series: HIRIP high-current RTXFPorcelain insulatorVoltage range: up to 36 kVCurrent range: up to 40 000 A
RIP transformer bushings, oil-SF6
Series: GARIP / RTKGVoltage range: from 36 to 550 kVCurrent range: up to 4000 A
RIP transformer bushings, oil-oil
Series: OilRIP / RTKKVoltage range: from 72.5 to 550 kVCurrent range: up to 4000 A
RIP outdoor-SF6 bushings for GIS
Series: RAKF Porcelain or silicone composite insulatorVoltage range: from 245 to 550 kVCurrent range: up to 4000 A
Porcelain or silicone composite insulatorVoltage range: from 24 to 300 kVCurrent range: up to 5000 A
RIP railway bushings
Series: RMF / RTAK porcelain insulatorVoltage range: from 15 to 36 kVCurrent range: up to 2000 A
RIS transformer bushings, oil-air
Series: EasyDry / DMB-OASilicone composite insulator with straight shedsVoltage range: from 24 to 140 kVCurrent range: up to 2500 A
In addition to the transformer high current bushings described here, ABB Switzerland Ltd Insulation and Components offers other transformer bushings, GIS bushings, wall bushings and railway bushings, as well as customer tailored bushings.
Type designation
The type designation for high-current bushings is made up as follows:
Ordering number
The ordering number comprises two parts:
Part 1 – Ordering type number, which specifies the bushing type
Part 2 – Ordering modifications number, which specifies the bushing options
Current transformer extension (L6) [mm]
Porcelain insulator color
Terminal geometry*
Ordering modification number
0 brown version 1 R0011
0 brown version 2 R0012
0 grey version 1 R0021
0 grey version 2 R0022
100 brown version 1 R0111
100 brown version 2 R0112
100 grey version 1 R0121
100 grey version 2 R0122
300 brown version 1 R0311
300 brown version 2 R0312
300 grey version 1 R0321
300 grey version 2 R0322
Designation Ordering type number
HIRIP RTXF 36–200/7000 1ZCD061816
HIRIP RTXF 36–200/11000 1ZCD061556
HIRIP RTXF 36–200/15500 1ZCD061820
HIRIP RTXF 36–200/22000 1ZCD061826
HIRIP RTXF 36–200/26000 1ZCD061855
HIRIP RTXF 36–200/37000 1ZCD061892
Example
Part 1: RTXF 36–200/11000 - 1ZCD061556
Part 2:
Current transformer extension porcelain insulator color terminal geometry
Reference current with current transformer extension = 0 mm, maximum daily mean oil temperature = 90 °C and maximum daily mean air temperature = 70 °C in bus duct, frequency = 50Hz
Rated lightning impulse withstand voltage (BIL) [kV]
Rated voltage [kV]
R = RIP insulation | T = transformer application | X = length of oil side | F = air side