wally_gatter Posted January 8, 2019 Share Posted January 8, 2019 An nou fericit la lume !! Intrebarea ce ma apasa momentan este : unde gasesc rezistente electrice pentru a incalzi apa intr-un puffer , acestea sa fie alimentate din reteaua trifazata de 400V.. este vreun magazin onlain la noi in tara care comercializeaza asa ceva? Quote Link to comment Share on other sites More sharing options...
cipcirip Posted January 8, 2019 Share Posted January 8, 2019 Nu e mai simplu sa luati de 230 V si sa le alimentati faza-nul ? Quote Link to comment Share on other sites More sharing options...
validae Posted January 8, 2019 Share Posted January 8, 2019 Cred că puterea necesară ar putea depăși maximul posibil pentru o rețea monofazată.Dar cred se pot folosi mai multe rezistențe de 230V legate corespunzător... Quote Link to comment Share on other sites More sharing options...
mac01 Posted January 8, 2019 Share Posted January 8, 2019 Cate doua in serie.... Quote Link to comment Share on other sites More sharing options...
wally_gatter Posted January 8, 2019 Author Share Posted January 8, 2019 caut ceva de genul asta sau asta .... Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 8, 2019 Share Posted January 8, 2019 https://www.google.com/search?q=rezistenta+apa+trifazata&tbm=isch&source=iu&ictx=1&fir=gVjfU7d9REisPM%3A%2CAU36NhP5Ol_T3M%2C_&usg=AI4_-kSCHX6Vnc4BGlSSYHpYweC9YnrFFg&sa=X&ved=2ahUKEwi0k9CZj9_fAhUPyoUKHb1wCe0Q9QEwA3oECAUQCg#imgrc=gVjfU7d9REisPM: Aveti de unde alege Quote Link to comment Share on other sites More sharing options...
wally_gatter Posted January 9, 2019 Author Share Posted January 9, 2019 Pana la urma cred ca le aduc din strainatati... 18kW la 415V ... ceea ce am gasit pe Google sunt ptr legare in stea... Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 9, 2019 Share Posted January 9, 2019 Pai si dumneavoastra cum doriti sa le legati? In triunghi? Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 9, 2019 Share Posted January 9, 2019 Cu ce v-ar incurca daca le legati in stea? Quote Link to comment Share on other sites More sharing options...
wally_gatter Posted January 10, 2019 Author Share Posted January 10, 2019 Acum 16 ore, valivoi a spus: Pai si dumneavoastra cum doriti sa le legati? In triunghi? Da Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 11, 2019 Share Posted January 11, 2019 Si de ce vreti totusi sa le legati neaparat in triunghi? Quote Link to comment Share on other sites More sharing options...
wally_gatter Posted January 12, 2019 Author Share Posted January 12, 2019 La 11.01.2019 la 15:52, valivoi a spus: Si de ce vreti totusi sa le legati neaparat in triunghi? doar pentru eficienta. Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 13, 2019 Share Posted January 13, 2019 Ma scuzati, eu nu inteleg cum poate fi mai eficienta legarea rezistentelor in triunghi decat in stea ,va garantez ca exista cuptoare electrice in domeniile patiseriei brutariei la care sunt legate rezistentele in stea.Pana acum la cate cuptoare am umblat, la un singur cuptor, american Lincoln Electric produs prin anii''90,reconfigurat pentru reteaua de energie europeana, am gasit rezistente legate in triunghi.6 rezistente de 220v, legate cate 2 in serie,fiecare serie alimentata intre 2 faze,deci in triunghi. Quote Link to comment Share on other sites More sharing options...
v67 Posted January 28, 2019 Share Posted January 28, 2019 La centralele termice rezistentele electrice sunt legate in stea cu nulul de lucru legat in punctul neutru ele fiind 3x230 una, doua trepte se respecta relatia Ul=ufx1,73 nu ar fi nimic in neregula daca folositi rezistente cu In 400v legate in triunghi la caeeasi putere. Quote Link to comment Share on other sites More sharing options...
valivoi Posted January 31, 2019 Share Posted January 31, 2019 On 1/28/2019 at 10:27 PM, v67 said: La centralele termice rezistentele electrice sunt legate in stea cu nulul de lucru legat in punctul neutru ele fiind 3x230 una, doua trepte se respecta relatia Ul=ufx1,73 nu ar fi nimic in neregula daca folositi rezistente cu In 400v legate in triunghi la caeeasi putere. La centralele electrice trifazate se leaga in stea cu nulul de lucru la punctul neutru pentru a putea modula puterea alimentand o rezistenta doua sau trei.Daca nu ai avea nulul de lucru legat nu ai avea posibilitatea decat toate trei rezistentele alimentate sau doua rezistente inseriate legate faza -faza. Quote Link to comment Share on other sites More sharing options...
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