Transformer Soft starter/Switching - KMB Systems - #1

Obvod mékkého rozbéhu pro transformätory

TrafoSTART je elektronické relè uròené ke spinàni jednofàzovych transformàtorù. Principem je kontrola magnetizace jàdra transformàtorù bèhem rozbéhu. V jednotlivych pùlperiodàch napàjeciho napétf je jàdro pfemagnetovàno na opafinou polarìtu s pfesnè definovanym prirùstkem magnetizace nastaveném podle typu transformàtorù. Metoda Fìzenf rozbéhu transformàtorù zcela eliminuje zapfnacf proud transformàtorù, pfìéemz je zajiSténa minimàlni doba rozbéhu (od 0,06 s). Tento unikàtnf princip je chrànén patentem CZ 296466. Magnetovacf impulsy jsou korìgovàny podle prùbéhu primàrnfho napétf a tak je zajiStèna bezchybnà funkce s llbovolnou zàtézl sekundàrnfho vlnutf transformàtorù TrafoSTART je vhodny prò transformàtory vSech konstrukcf - El, Ul, C, toroidy a dalSi. K jednomu obvodu je mozno prìpojlt skuplnu paralelné spojenych transformàtorù rùznych typù. TrafoSTART je uròen pfedevSfm prò Casto spinane transformàtory a prò transformàtory s vysokou pracovnf indukcf a nfzkymi ztràtaml. Obvod se snadno Instaluje do pffvodu primàrnfho vintiti. Pfì zapojenf ovlàdacfho vstupu TrafoSTARTu mule nahradlt stykafi transformàtorù.

Vestavénà funkce kontroly magnetizace béhem cele doby chodu transformàtorù dovoluje bezproblémové provozovàni transformàtorù s vySSi pracovnf Indukcf, které jsou menai, lehcT a levnéjsT.

Transformer Soft Starter/Switching

The TrafoSTART Is an electronic relay for the switching single-phase transformers. The magnetization of the transformer core Is maintained In limits during energization. The transformer core Is remagnetlzed to opposite value of magnetization with exactly specified Increment In each half period of the supply voltage. The Increment of magnetization depends on type of transformer. The transformer starting method totally eliminates Inrush current with minimal start up time (from 0,06 s). This unique control procedure was patented. It has patent number CZ 296466. Magnetizing Impulses are revised according to the primary voltage waveform. This principle ensures error-free operation with any transformer secondary load.

The TrafoSTART Is suitable for all kinds of transformers - El, Ul, C, toroidal, at al. Parallel connected transformers of different types can be connected to one TrafoSTART. The TrafoSTART Is recommended for frequently switched transformers and for low-losses transformers with high working Induction. The device Is easily installed into the primary lead. The TrafoSTART can replace transformer contactor, when control Input Is used.

The embedded function of the supply voltage failure recognition allows to operate transformer with high working Induction without troubles. Solution with such transformer and the TrafoSTART Is then smaller In size, lighter and cheaper.

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KMB systems s.r.o., Tfida Dr. Milady Horàkové 559,460 06 Llberec 7, Czech Republic, tel.: 485130 314, e-mail: kmb@kmb.cz, http://www.kmb.cz TU v Liberei - KEK FM, Hàlkova 6,46117 Liberec, Czech Republic, tel.:485 353 626, e-mail: miroslav.novàk@tul.cz, http://www.fm.tul.cz/~kel