Breve Tufvassons advice

We share knowledge from across electrical engineering, electronics and related technologies. Our specialists advise on selecting equipment, its functionality and applications.
  • Class 0.2S current transformers: the foundation of effective reactive power compensation in modern industry
    Friday July 17th, 2026

    Class 0.2S current transformers: the foundation of effective reactive power compensation in modern industry

    Why is accuracy class 0.2S the foundation of effective reactive power compensation? We explain the role of precise current measurement and present the BREVE BTI current transformer series.
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  • DIN Rail Power Supplies for Demanding Applications – When a Standard Power Supply Is No Longer Enough
    Thursday March 12th, 2026

    DIN Rail Power Supplies for Demanding Applications – When a Standard Power Supply Is No Longer Enough

    When designing industrial automation systems, selecting a switch-mode power supply often comes down to two parameters: output voltage and required power. In practice, however, it is usually the actual operating conditions, rather than power…
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  • Mobile unit of adjustable AC and DC power supplies
    Friday April 1st, 2022

    Mobile unit of adjustable AC and DC power supplies

    The BREVE design team has developed, to a customer’s order, an unusual unit of adjustable AC and DC power supplies. The equipment was designed for test work in the manufacture of operating mechanisms for…
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  • Short-circuit test condition of a transformer
    Tuesday May 5th, 2020

    Short-circuit test condition of a transformer

    We have already written about what the no-load condition of a transformer is, and we have taken a close look at its load condition. Now we shall deal with another property – we take…
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  • Line reactors for drive systems from Breve-Tufvassons
    Wednesday April 8th, 2020

    Line reactors for drive systems from Breve-Tufvassons

    A choke is simply an inductor with a magnetic core that prevents sudden changes in the electric current. It can also be used to limit alternating current without the power losses that would occur…
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  • How does a transformer work? (part 2)
    Thursday March 12th, 2020

    How does a transformer work? (part 2)

    The basic information on how a transformer works was explained in the previous article. It is worth developing a few further concepts and relationships, however, in order to understand the functionality, operating principles and…
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  • How does a transformer work? (part 1)
    Thursday March 12th, 2020

    How does a transformer work? (part 1)

    A transformer is used to convert an alternating voltage of a given value into an alternating voltage of a different value, while maintaining the same frequency. A special case is that of transformers which…
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  • How does a three-phase transformer work?
    Thursday March 12th, 2020

    How does a three-phase transformer work?

    Three-phase transformers operate in the same way as single-phase transformers. The principle of operation is analogous. Here, however, we have a minimum of three supply conductors carrying alternating voltages phase-shifted by 120°. The windings…
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  • Isolating transformers
    Thursday March 12th, 2020

    Isolating transformers

    Questions often arise about isolating transformers. Isolating transformers are those transformers in which the output voltage is most often equal to the input voltage. They provide galvanic isolation between the primary and secondary windings.…
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  • Electronic power supplies for LED lighting
    Monday February 3rd, 2020

    Electronic power supplies for LED lighting

    In this article we would like to present the most important advantages of our electronic ZLD power supplies designed for LED lighting. If you would like to find out more, we invite you to…
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  • PCS 250/9A – new transformer for cutting expanded polystyrene
    Monday November 4th, 2019

    PCS 250/9A – new transformer for cutting expanded polystyrene

    One of the key aspects of insulating buildings is cutting the expanded polystyrene correctly. It is essential that the cut boards fit precisely against one another. Mechanical cutting, for example with a saw or…
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  • Safety isolating transformers
    Friday October 14th, 2016

    Safety isolating transformers

    Safety isolating transformers provide, in accordance with standard PN-EN61558-2-6, protective separation of the primary and secondary windings. They are intended to supply circuits with a safety extra-low voltage. Furthermore, the secondary voltage under no-load…
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  • Ventilation systems – how to control them?
    Tuesday September 27th, 2016

    Ventilation systems – how to control them?

    Breve recommends one of its new products – an innovative fan control system. The Regisoft system is based on the MODBUS protocol, AREX/A controllers and a PC application. AREX electronic controllers allow stepless control…
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  • Fan speed controllers – the complete range
    Thursday July 14th, 2016

    Fan speed controllers – the complete range

    In response to the needs of our Customers, we have prepared a complete overview of Breve controllers. The overview lists all the functions of our devices and indicates their applications. Selecting the best controller…
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  • Smart fan speed controllers
    Friday July 8th, 2016

    Smart fan speed controllers

    New Breve fan speed controllers deserve to be called SMART, because they are modern, intelligent and equipped with advanced functions. The right climate and energy savings are guaranteed here! Why are fan speed controllers…
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  • Electronic controllers for ventilation
    Monday June 13th, 2016

    Electronic controllers for ventilation

    Electronic controllers allow stepless control of fans. The ARES design from Breve is based on a microprocessor, which makes fan control more linear, more convenient and more precise. The ARES controller is distinguished by:…
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  • Transformers with complex winding arrangements
    Monday June 13th, 2016

    Transformers with complex winding arrangements

    We often come across situations in which it becomes necessary to use a transformer with several secondary windings or windings with tappings. Transformers of this type, classified as so-called combined transformers, are usually made…
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  • Parallel operation of transformers
    Friday April 15th, 2016

    Parallel operation of transformers

    When we need to increase the supply capacity for a given load, it is necessary to connect two or more transformers in parallel. Correct operation of such a set is possible only if several…
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  • Autotransformers – what are they and how do they work?
    Monday March 14th, 2016

    Autotransformers – what are they and how do they work?

    An autotransformer is a device used to change the voltage level. Its fundamental feature is that it provides no galvanic isolation of the secondary side from the primary side. This is undoubtedly a drawback…
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  • Transformer efficiency
    Tuesday March 8th, 2016

    Transformer efficiency

    Because a transformer generates losses, it is worth introducing the concept of efficiency, which is defined as the ratio of the power delivered to the load to the sum of the power delivered to…
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  • Transformer load condition
    Monday February 29th, 2016

    Transformer load condition

    We already know what the no-load condition of a transformer is. Now we present the transformer load condition in greater detail. Assuming that the transformer load is within the permissible limits, it can be…
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  • No-load condition of a transformer
    Friday February 26th, 2016

    No-load condition of a transformer

    The no-load condition of a transformer is a condition in which the transformer is supplied with primary voltage. The terminals of the secondary winding remain open. In this condition the secondary-side current is equal…
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  • Intermittent duty of a transformer
    Friday January 22nd, 2016

    Intermittent duty of a transformer

    What is intermittent duty of a transformer? The rating required for a transformer operating in an “intermittent” manner in identical, defined cycles is determined from the following formula: S = √ (tp/(4tc) x Sodb…
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  • KSR switch mode power supplies
    Friday January 22nd, 2016

    KSR switch mode power supplies

    What are switch mode power supplies? A switch mode power supply is an electronic device that uses an internal oscillator operating at a frequency of several tens of kHz, together with the phenomenon of…
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  • Transformer designations
    Monday January 4th, 2016

    Transformer designations

    Every transformer manufactured by our company is marked with one or more symbols. They may look somewhat cryptic and are not clear to everyone. That is why below we explain all the designations that…
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  • Transformers and heat losses
    Monday December 7th, 2015

    Transformers and heat losses

    The power losses occurring in transformers are responsible for the generation of heat. The heat originates mainly from the windings and the core. The heat released is an undesirable phenomenon and gives rise to…
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  • Enclosure degree of protection defined by the IPXX system
    Friday December 4th, 2015

    Enclosure degree of protection defined by the IPXX system

    A great deal of uncertainty arises with regard to the protection of transformers. What do the symbols IP21 or IP56 mean? Which transformer should be selected when it is to operate indoors, outdoors, in…
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  • Sprawność transformatorów
    Tuesday December 1st, 2015

    Sprawność transformatorów

    Co warto wiedzieć w temacie sprawności transformatorów? Sprawność jest różna ze względu na moc znamionową transformatora i zawiera się w granicach ok. 0,3-0,4 dla transformatorów o mocy pojedynczych VA, aż do ok. 0,99 dla…
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  • AREB 2,5 phase-cut fan speed controller
    Wednesday November 18th, 2015

    AREB 2,5 phase-cut fan speed controller

    AREC 2,5″ width=”403″ height=”405″ /> Regulator prędkości wentylatora AREB GŁÓWNE WYRÓŻNIKI FUNKCJA PAMIĘCI NASTAWY Większość podobnych urządzeń na rynku uruchamiamy, przekręcając gałkę potencjometru, co sprawia, że w danym momencie wentylator otrzymuje pełne napięcie zasilania,…
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  • Halogen lighting in 12V systems
    Tuesday November 17th, 2015

    Halogen lighting in 12V systems

    Żarówki halogenowe osiągają znamionową żywotność i światłość w warunkach zasilania napięciem znamionowym 12V. Wszelkie odchylenia od tego napięcia istotnie wpływają na własności źródeł światła.   Podany poniżej wykres pokazuje wpływ zmian napięcia zasilania żarówek na…
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  • Core magnetisation level depending on transformer application
    Thursday November 12th, 2015

    Core magnetisation level depending on transformer application

    Materiał ferromagnetyczny użyty do produkcji rdzeni transformatorowych można scharakteryzować przez wykres zależności wielkości indukcji magnetycznej „B” w funkcji natężenia pola magnetycznego „H”, czyli krzywej magnesowania. Dla prądów wolnozmiennych będzie to znany kształt pokazujący tzw.…
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  • Isolation of power tools
    Friday October 30th, 2015

    Isolation of power tools

    Wyobraźmy sobie profesjonalistę, który używa elektronarzędzi w swojej pracy. Pracuje w biurach lub mieszkaniach, na terenie budowy, w pomieszczeniach w stanie surowym, na otwartej przestrzeni, a czasami w piwnicach bez okien lub choćby we…
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  • Power supplies for LED bulbs
    Tuesday October 27th, 2015

    Power supplies for LED bulbs

    KSR 03612 230/ 12VDC 3,0A” width=”500″ height=”500″ /> Dla tych, którym zależy na dobrym zasilaniu i trwałości opraw LED, a jednocześnie na atrakcyjnym  poziomie cenowym, proponujemy serię dedykowanych LED-om zasilaczy impulsowych ZLD. Charakteryzują się…
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  • Breve Tufvassons – 25 years on the market
    Monday October 26th, 2015

    Breve Tufvassons – 25 years on the market

    Breve Tufvassons to polski producent transformatorów, regulatorów prędkości wentylatorów, dławików i zasilaczy. Firma funkcjonująca na rynku od 25 lat z sukcesami rozwija swoje portfolio produktów i zaspokaja potrzeby Klientów nie tylko w Polsce, ale…
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  • D3F – filter choke
    Wednesday October 21st, 2015

    D3F – filter choke

    D3F to dławiki do ochrony baterii kondensatorów przy kompensacji mocy biernej.  Wiemy już, czym są dławiki (więcej informacji pod tym adresem) i dokładnie poznaliśmy dławiki sieciowe, o których więcej można przeczytaj tutaj. Natomiast, warto…
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  • Monday October 19th, 2015

    ARWE and A3RWE – which fan speed controllers are behind these names?

    Regulatory prędkości wentylatorów to grupa produktów o dużej popularności w ofercie firmy Breve. O samej regulacji prędkości wentylatorów pisaliśmy tutaj, a poniżej zestawiamy szczegółowe informacje o regulatorach ARWE i A3RWE. Regulatory wentylatorów ARWE (jednofazowe)…
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  • STM and TMM single-phase transformers – which one to choose?
    Tuesday October 13th, 2015

    STM and TMM single-phase transformers – which one to choose?

    TMM 50/A 230/ 12V” width=”432″ height=”432″ /> TMM   Typoszereg TMM powstał ponad 10 lat temu. Bazował on na dostępnych wówczas materiałach i technologiach, spełniał ówczesne normy i zaspokajał tradycyjne przyzwyczajenia Klientów. Transformatory TMM…
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  • Fan speed controllers
    Monday October 12th, 2015

    Fan speed controllers

    ARW 3.0/S IP 54″ width=”414″ height=”414″ />     AREB To tyrystorowy regulator prędkości z płynną regulacją wentylatora, funkcją pamięci nastawy, ograniczeniem minimalnej prędkości oraz zabezpieczeniem topikowym. Zalety: pamięć nastawy zrealizowana za pomocą innowacyjnie…
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  • Foil-wound transformers
    Friday October 2nd, 2015

    Foil-wound transformers

    Rozszyfrowanie tematu TRANSFORMATORY FOLIOWE związane jest z technologią wykonywania uzwojeń transformatora.Większość specjalistów przyzwyczaiła się, że uzwojenia urządzeń indukcyjnych mają postać drutów nawojowych, o grubościach dostosowanych do wartości prądu. Z takiego podejścia wynikają  dobrze znane…
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  • UMD transformers for medical locations
    Wednesday September 30th, 2015

    UMD transformers for medical locations

    UMD10,0/2 230/230V” width=”276″ height=”391″ />   mgr inż. Krzysztof Majewski Kierownik Działu Handlowego Breve-Tufvassons Większość pomieszczeń medycznych, a w szczególności pomieszczenia zabiegowe wykorzystujące urządzenia elektryczne, wymaga zastosowania specjalnego transformatora separacyjnego. Dlaczego? Dla lepszego zrozumienia…
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  • Chokes
    Monday September 21st, 2015

    Chokes

    D1N 150A/0,195mH 4%” width=”322″ height=”315″ /> Sieciowe trójfazowe D3N   Trójfazowe filtracyjne D3F D3F 50/14/440 69,4A/1,72mH 400VDławiki to inaczej cewki indukcyjne z rdzeniem magnetycznym lub rzadziej bez rdzenia (powietrzna), zapobiegające nagłym zmianom natężenia prądu…
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CONTACT US
Do you need more information? Please contact our company. If you write to us, you will definitely get an answer.
Our advisers will gladly suggest and dispel your doubts. Do not hesistate to ask.

Breve Tufvassons Sp. z o. o.
Postępowa 25/27
93-347 Łódź, Poland
NIP: 727-012-56-95
KRS: 0000034304
REGON: 004278382

Contact us:
phone: (42) 640 15 39
fax: (42) 640 15 41
handel@breve.pl