• MICAFIL RIP bushings offer an extended service life combined with enhanced reliability and safety to ensure the maximum availability of transformer assets.
• Over 100 years of experience is incorporated in a range of standard and customized products with the flexibility to suit different customer applications. Their high performance design is partial discharge free up to double of the nominal phase to ground service voltage.
24/7 Service hotline for technical issues Phone: +41 (0)58 586 07 70
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—Superb engineering expertise
RIP bushing in detail Cut-away of general design1. Depending on the current rating, the active part is wound
on either a center tube or a solid conductor2. Active part is made out of Resin Impregnated Paper body
with inserted aluminium foils3. Current transformer extensions: if current transformers
are required, the ground layer is extended4. MICAGEL dry filler5. Mounting flange with integrated measuring tap6. Porcelain or silicon composite insulator for outdoor
applications7. Head with terminal (Al / Cu)8. Transformer side shield ensures a smooth electrical
field grading
MICAFIL RIP bushing advantages excellent electrical and thermal values• Partial discharge free up to double of the nominal phase
to ground service voltage• High thermal endurance (class E, 120 °C)• Low dielectric losses (tan δ ≤0.40 %)
Superb design• Compact, space saving• Flexible design allows for adaption to different customer
needs and transformer requirements• Low weight
Easy to use, maintenance-free• No maintenance or constant monitoring necessary• Installation, storage and transportation is possible at
any angle
Highest operational safety• Completely dry bushing, meaning no oil leakage and
lowest risk of explosion• The new SeismicRIP® outdoor transformer bushings
satisfy the highest seismic requirements
Service• 24/7 Service hotline for technical issues
Phone +41 (0)58 586 07 70
StandardsMICAFIL RIP bushings are specified and tested according to the latest IEC 60137 (2017) and IEEE C57.19.00/01 (2004) standards. The new line of SeismicRIP® outdoor transformer bushings satisfy the highest earthquake requirements as per IEEE Standard 693-2005.
—MICAFIL RIP Transformer BushingsHigh-voltage Resin-Impregnated Paper bushings
— Transformer bushings, oil-SF6
Series: GARIP / RTKGVoltage range: from 36 to 550 kVCurrent range: up to 4000 A
— Railway bushings
Series: RMF / RTAK Porcelain insulatorVoltage range: from 15 to 36 kVCurrent range: up to 2000 A
— Transformer bushing, oil-oil
Series: OilRIP / RTKK Voltage range: from 72.5 to 550 kVCurrent range: up to 4000 A
— Outdoor-SF6 bushings for GIS
Series: RAKF Porcelain or silicone composite insulatorVoltage range: from 245 to 550 kVCurrent range: up to 4000 A
— Wall bushings
Series: RMI indoor-indoorSeries: RMF outdoor-indoorSeries: RMFF outdoor-outdoorPorcelain or silicone composite insulatorVoltage range: from 24 to 300 kVCurrent range: up to 5000 A
— Transformer bushings, oil-outdoor
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 40,000 A
ABB Switzerland Ltd offers an extensive range of high-quality products. They can be adapted to different transformer and plant designs and thus meet the requirements of the most varied applications. In addition, our company is specialized in tailor-made solutions including custom designs and small series production.
Our range of products encompasses bushings for oil-outdoor, oil-SF6, oil-oil transformer systems as well as outdoor-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.
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—Leading in bushings technologySince the 1980s
ABB Switzerland Ltd has been closely associated with innovation and quality for decades
Since the 1980s, the company has been the worldwide leader in Resin Impregnated Paper bushings (RIP), using an oil-free and thus dry and clean technology. RIP bushings are characterized by their outstanding technical performance: the small and lightweight design facilitates easy transportation, storage and installation while the oil-free construction requires absolutely no maintenance, is leakage-free and therefore exceptionally safe and environmentally friendly. These characteristics combined with genuine Swiss quality make RIP bushings the first choice for even the most demanding applications.
Our background Based in Zurich, ABB Switzerland originally produced only traditional bushings such as OIP (Oil Impregnated Paper) and RBP (Resin Bonded Paper). As the world’s first company, ABB developed its RIP bushings (resin impregnated paper) already in the 1960s. At the end of the 1980s, we were again the very first to start the production of 420 kV RIP bushings and in 1996 of 550 kV RIP bushings. For the last 30 years, ABB has been operating its bushings production exclusively with the superior RIP technology. The continuously improved design of MICAFIL RIP high-voltage bushings sets new standards regarding quality, reliability and state-of-the-art safety solutions. In 2012, ABB was the first to launch the new paperless RIS (Resin Impregnated Synthetics) bushings: EasyDry. This new high voltage transformer bushings are a modern
bushing technology and sets new standards regarding quality, reliability, safety and lead time. Being a member of the ABB Group since 2004, we have access to comprehensive resources, particularly in the fields of high-voltage engineering, material research and applied physics.
Your advantages We are familiar with your goals: increasingly ambitious targets of improved availability and prolonged lifetime, continuously advanced safety standards, more efficient capacity utilization of your assets, while cost pressure remains intense. To cope with these demanding objectives, many utilities throughout the world now rely on our RIP technology for good reasons: our bushings are the most dependable and safest, leading to an excellent cost- performance ratio. We therefore offer you a most valuable contribution towards reaching improved overall performance figures.
Our solution The RIP bushings’ condenser bodies consist of solid cores. These are made of special crepe paper being wound following a certain sequence, and having numerous intermediate layers of coated aluminum foil embedded for the necessary electrical field grading. Subsequently, these paper condenser cores are vacuum dried and afterwards impregnated with a high temperature epoxy resin. These computer controlled processes of vacuum drying and impregnation as well as the final curing are very sensitive. They are run under vacuum in tightly controlled ambient conditions and in hermetically sealed environments. We are proud of our leading position in this technology, providing our customers with profound expertise based on over 120,000 RIP bushings successfully in operation.
—RIP bushings technology, made and tested in Zurich, Switzerland
