3AU

A0

00

00

80

94

2 R

EV

A 1

8.5

.20

10 #

149

95

5 E X PE R TI S E FO R M A X I M U M R E LI A B I LIT Y M I C A F I L B U S H I N G S E RV I CE

We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB Ltd. does not accept any responsibility what-soever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its contents – in whole or in parts – is forbid-den without prior written consent of ABB Ltd.

Copyright© 2018 ABBAll rights reserved

MICAFIL bushings combine functionality, high performance and long service life.

— MICAFIL bushing service Expertise for maximum reliability

• The optimized solutions are based on partnerships with customers and our understanding of their needs.

• With proven components and a variety of designs, our RIP series meets customer-specific requirements.

—ABB MICAFIL RIP bushing range

ABB offers an extensive range of high-quality products. They can be adapted to different transformer and plant designs and thus meet the requirements of a wide variety of applications. We specialize in tailor-made solutions, including custom designs and small series production.

Our range of products encompasses bushings for oil-air, oil-SF6, oil-oil transformer systems, and air-SF6 bushings for GIS. If you would like any more information, please contact us – we can address your individual needs in a highly professional, flexible, and efficient manner. Our bushings are developed and approved for mineral oil applications. Bushings for other oils are available on request.

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)High seismic performance level

Series: HIRIP high-current RTXFPorcelain insulatorVoltage range: up to 36 kVCurrent range: up to 40000 A

RIP Transformer bushings, oil-SF6Series: GARIP / RTKGVoltage range: from 36 to 550 kVCurrent range: up to 4000 A

RIP Transformer bushings, oil-oi

Series: OilRIP / RTKKVoltage range: from 72.5 to 550 kVCurrent range: up to 4000 A

RIP Air-SF6 bushings for GIS

Series: RAKFPorcelain or silicone composite insulatorVoltage range: from 245 to 550 kVCurrent range: up to 4000 A

RIP Wall bushings

Series: RMI indoor-indoorRMF outdoor-indoorRMFF outdoor-outdoorPorcelain 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 170 kVCurrent range: up to 2500 A

—ABB Switzerland Ltd.Insulation and ComponentsMICAFIL BushingsBadenerstrasse 780CH-8048 ZürichSwitzerlandPhone +41 (0)58 586 03 33info.micafil@ch.abb.com

www.abb.com/transformercomponents

24/7 Service hotline for technical issues Phone +41 (0)58 586 07 70

—Leaders in Bushing Technology

How long will a bushing last?The typical life-span of an old-fashioned bushing is not as long as one would expect – it may only be approximately half of a typical transformer’s life-span.

If the time in service, as indicated in the chart below, has elapsed, the risk of an insulation breakdown increases, particularly when the bushing is put under stress by temperature cycles and transient over-voltages.

Therefore, bushings should not be neglected, but inspected and tested in a time-based or condition-based manner to prevent damage to the much more costly transformer.

ABB MICAFIL bushings typical life expectancy Life cycles based upon the technology

432 E X PE R TI S E FO R M A X I M U M R E LI A B I LIT Y M I C A F I L B U S H I N G S E RV I CE

ABB Switzerland, MICAFIL bushings factory, based in Zurich, established itself as technology leader in bushings through its manufacture of traditional types such as OIP (Oil Impregnated Paper) and RBP (Resin Bonded Paper). It developed the world’s first RIP bushings (Resin Impregnated Paper) in the 1960s, before producing the first 420 kV RIP bushings at the end of the 1980s and the first 550 kV RIP bushings in 1996.

ABB is continuously striving for new, innovative solutions to meet our customers’ needs for their applications. Therefore, our state-of-the-art products, based on RIS Technology (Resin Impregnated Synthetics), are a result of determined ongoing work in research and development involving the profound knowledge of ABB’s unique R&D global network. Modern bushing technologies set new standards of safety, reliability, quality and lead time.

ABB has access to comprehensive resources, particularly in the fields of high-voltage engineering, materials research, and applied physics.

—Our portfolio of services

—Product life cycle for bushing

01. On-site bushing repair/installationOur repair kits allow for our customers worldwide to repair bushings on site and bring them back into service as fast as possible.

If you need help in replacing a bushing on a transformer, we can instruct ABB service staff in your area.

02. On-site bushing testing Transformer bushings are key components in power transmission and distribution systems. The quality of their insulation is something normally taken for granted. However, that same insulation can unnecessarily cause an equipment failure, resulting in costly replacement or repairs and downtime. To avoid such a situation, the quality of insulation should be monitored periodically by measuring capacitance and dissipation factor which give an indication of the quality of the insulation.

03. Factory repair and testingRepairing and refurbishing a bushing instead of replacing it can, in certain cases, reduce capital maintenance costs and provide a quicker turnaround as opposed to buying a new one. This is preferably combined with comprehensive Factory Acceptance Testing (FAT) which includes: AC testing, impulse testing and partial discharge testing, as well as measurement of capacitance and dissipation factor. Depending on the results of the tests, a replacement of the insulation core could be needed

and can be done easily in our Factory. ABB is able to replace any Micafil bushing based on state-of-the-art RIP or RIS technologies, even if the bushing was not made by us. Our comprehensive knowhow and extensive manufacturing experience help us to redesign and replace every type of bushing you can find in the world.

04. Spare partsHaving critical parts on hand can significantly reduce downtime. We provide spare parts for all of our bushings for repair, even for units older than 30 years. ABB maintains a library of original design documents, which is based on a comprehensive archive covering an impressive number of bushing designs worldwide.

05. Customer trainingOn request, we can provide in-house training, with detailed programs customized for you and your staff. The training can cover:• Technologies• Products • Handling and Installation of Bushings • Storage• Dielectric measurements

06. Technical consultingBased on our experience with graded bushings, we can help interpret your test data from the field and define the required actions together with you.

0.70

1020

3040

5060

7080

90

0.8

0.9

1.0

1.1

1.2

1.3

RIP body temperature (°C)

fc

Correction factor for dielectric dissipation

factor tanδ of RIP

—01 On-site bushing repair/installation

—03 Factory repair and testing

—04 Spare parts

—05 Customer training

—06 Technical consulting

—02 On-site bushing testing

OIP

Life cycle ≈ 25 years

Produced from 1970 till 1988

2.5

A

5

B

7.5

A

10

B

12.5

A

15

B

17.5

A

20

B

22.5

A

>25

C

RBP

Life cycle ≈ 25 years

Produced from 1920 till 1985

4

A

8

A

12

B

16

B

20

B

>25

C

RIP

Life cycle > 35 years

Producing since 1980

5 10 15 20 25 30 35 40

A A B B B B B C

RIS

Life cycle > 35 years

Producing since 2012

5 10 15 20 25 30 35 40

A A B B B B B C

Level A – Visual Inspection

Level B – Diagnosis

Level C – Recommendation for replacement of retrofit