Electrical Components
Quality and Flexibility are our Components for your Success

High Quality Transformer Solutions

The Electrical Components division houses the competence centre for transformer accessories within the PREIS Group. Professional and committed employees place great emphasis on quality, reliability and customer satisfaction in their day-to-day business. Flexibility and professional expertise are also amongst our strengths. Long-term partnerships with the world´s leading transformer manufacturers and an integrated management system underline these skills and abilities.

The innovative team in technical sales supports partners and customers in all relevant areas around the world.

Everything from a single source

From designing the components with modern software through to the finished product, all the work steps are provided from a single source.

The realisation of your specific requirements is our strength.

Our site in Pernitz has its own engineering department as well as an excellently equipped logistics centre and modern manufacturing machines for insulations materials. Professional and commit ted employees place great emphasis on quality, reliability and customer satisfaction in their day-to-day-business.

Our Products

We offer a complete and comprehensive range of products. You will find components such as bushings, tap changers, oil level indicators, air dryers and other accessories for transformers as well as insulation materials  for copper flat and round-wires – all customized to your unique requirements

PREIS is able to offer a wide range of transformer bushings,  from 1kV and 50A up to 52kV and 25.000 A.

Members of the PREIS Group develop and produce a diverse and wide range of off load tap changers which meet the requirements of EN 60214.

Our latest Innovation, the Click-Bushing. An explicit reduction in mounting and demounting times, thanks to the click system.

PREIS  is a manufacturer of insulation materials which are used in the electrical industry for insulating flat and round wires.

Research & Development

It is our highest priority to drive fundamental developments in transformer accessories. Thanks to the sound expertise of our R&D department and our cooperation with specialised institutes and development partners, we are always in a position to react optimally to the different needs of our customers and markets.

The new Click-Bushing

Our research and development department is continually at work to ensure that we remain a leader in our technological sector. Forty years of responsible attitude, customer service and attention to innovation have guaranteed the success of our family business.

Our latest catalogues

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References

Porcelain Bushings

Type of products

PREIS is able to offer a wide range of transformer bushings, from 1kV and 50A up to 52kV and 25.000A.

Below you will find a short extract of the most common porcelain bushings from our regular range. The PREIS logistics centre has a significant stock of several special insulators with higher creepage distances, longer oil part lengths or special glazing colours as well as metal parts with special dimensions and special surface treatments, i.e. tin or nickel plating.

Standards we follow

Available standards that we take into consideration in our production are EN 50386, EN 50180, EN 50243, DIN 42530, DIN 42531, DIN 42532, DIN 42533, DIN 42534, DIN 42537, UNE 20176 and BS 2562. If you do not find the required bushing in the table below please contact us. We are certain to have a suitable one in our enlarged product range. 

Tap Changers

Members of the PREIS Group develop and produce a diverse and wide range of off load tap changers which meet the requirements of EN 60214.

Each tap changer produced is mechanically tested according to EN 60214-1 Point 7.3.1.

Tap changer series PDR 1 and 2

Tap changer series PDR 1 and 2 are used depending on the type (up to 36kV and 63A) in distribution transformers in one, two or three- phase applications. Depending on the technical requirements, holders of different lengths are available: 50, 70, 90 and 130 mm (the distance between the tank cover and the centre of the copper tubes).

The tap changer knobs exposed to the environment are made of a high-class plastic (modified PA6.6). A knob made of aluminium is also available as a special design.

The tap changer series PDZ

The tap changer series PDZ is used depending on the type (up to 36kV and 120A) in distribution transformers in one, two or three phase applications.

The distance between the tank cover and the center of the copper tubes is freely selectable by the customer. Please, specify this measurement in the inquiry or order. The tap changer knobs exposed to the environment are made of aluminum.

The tap changer series PDM

The tap changer series PDM is used depending on the type (up to 36kV and 150A) in transformers in one, two or three-phase applications.

Depending on the technical requirements, holders of different length are available: 91 and 131 mm (the distance between the tank cover and the center of the copper tubes).

The steel parts are made of mild steel and zinc plated as standard. These parts are also available in stainless steel as a special design.

 The tap changer type PDR was successfully tested according to IEC EN 60214-1 by the accredited testing laboratory CESI, including following tests:

  • Temperature rise test of contacts
  • Short circuit current test
  • Lightning impulse test

Each tap changer produced is mechanically tested according to EN 60214-1 Point 7.3.1.

Our latest innovation!

The Click-Bushing for the voltage-range 1kV

  • Explicit reduction of mounting and demounting time due to click system
  • No need to disassemble the bushing before mounting it
  • No alignment of the bushing necessary

Technical specifications

  • Nominal voltage: 1kV
  • Rated current strength: 1000A
  • Max. operating voltage: 1,1 kV
  • Lightning impulse voltage: 20 kV
  • Creepage distance: 75 mm
  • Arcing distance: 60 mm
  • Torque: 40 Nm

Parts list

  • Connection bolt: CuZn40Pb2-F37
  • Gasket ring J: NBR65-70
  • Flat gasket N: NBR60
  • Insulator A: C110
  • Insulator B: PA6.6
  • Cap: CuZn40Pb2-F37
  • Flap: PA6.6
  • Hexagon nu: CuZn40Pb2-F37

Insulation Materials

PREIS & CO is a manufacturer of insulation materials which are used in the electrical industry for insulating round and flat wires. We process materials such as textile glass, cotton and polyester yarns as well as their compounds.

Thanks to our flexibility and high-quality products leading companies in the field of wire insulation have been using our products for many years already. The raw materials are removed from the plastic bobbins and wound according to customer requirements with machines especially designed for this application. A constant pulling force is guaranteed by a fully automatic control. Mainly paper tubes are used as carriers for the wound yarns.

Designation of glass fibre and glass fibre/polyester spools

e.g. glass fibre spool type: EC5- 5.5 tex Z40 x 16

  • E………….E-glass (Electrical glass formulation)
  • C………….continuous filaments
  • 5…………..filament diameter in μm
  • 5.5 tex…..weight in grams per 1,000 metres
  • Z40………direction of twist (Z or S) as well as the
  • number of twists per metre
  • x 16………number of yarns wound together

e.g. glass fibre/polyester: (EC5- 5.5 PES 50) 11 tex x 20

  • EC5-5.5…E-glass (see designation above)
  • PES……….Polyester
  • 50………….dezitex = 5 tex
  • 11 tex……. weight in grams per 1,000 metre
  • x 20……… number of yarns wound together