Končar katalog

2 PLINSKI ( BUCHHOLZ ) RELEJI GAS ( BUCHHOLZ ) RELAYS Plinski ( Buchholz ) releji tipa 2RB služe za signaliza - ciju i davanje komande za isklapanje transformatora u sluèaju razvijanja plinova, gubitka ulja ili naglog porasta pritiska ulja uslijed kvara u transformatoru. Relej može nesmetano raditi pri temperaturi ulja od 2 -25 °C do +110 °C i viskozitetu od 6,2 mm / s do 1100 2 mm / s. Relej se može pouzdano koristiti i u podruèjima ugro- ženim od potresa ( ispitano sa 2g ; 5 - 60 Hz ). Kuæište plinskog releja 2RB izraðeno je od silumina ( tlaèni lijev ). Na obje strane kuæišta nalaze se stak - 3 leni prozorèiæi sa baždarenom skalom u cm za pro - vjeru kontaktnog sistema i oèitanje volumena sakuplje- nog plina. U kuæištu releja smješten je mehanizam s kontaktnim sistemom koji èine dva plovka sa perma- nentnim magnetima za aktiviranje kontakata. Kontakti gornjeg i donjeg plovka isporuèuju se kao uklopni ( is- klopni na zahtjev ). Gornji plovak aktivira kontaktni sis- 3 tem kod istisnute kolièine ulja od 150 do 300 cm , a donji kod strujanja ulja brzinom 65 do 150 cm/s ( ove velièine mogu se podešavati ). Karakteristike " reed " kontakta : - nazivna termièka struja Ith : 2 A - nazivni pogonski napon Ue : 230 Va.c./d.c. (min. 12 V) - nazivna pogonska struja Ie : 2 A - AC15 / DC13 (min. 10 mA) - ispitni napon : 2000 V; 50 Hz; 1 min. - tip kontakta : 2 x NO ( uklopni ) Relej 2RB je skladu sa normama DIN VDE 0660, DIN 42566 i N.H1.050. Gas (Buchholz) relays type 2RB are made for signalling and giving commands for disconnection of transformers in case of development of gases, oil loss or sudden increase in oil pressure due to defecfs of transformers. The relay can operate undisturbed at the temperature of oil from -25 °C up to +110 °C and oil viscosity from 2 2 6,2 mm / s to 1100 mm / s. The relay is also applicable in areas endangered by earthquake ( tested with 2g ; 5 - 60 Hz ). The casing of gas relay 2RB is made of silumin ( pressure - cast ). On both sides of the casing there 3 are glass windows with scale in cm for inspection of switching system and reading of collected gas volume. Inside the casing there is a contact mechanism with two floats with permanent magnets for contacts activa- tion. Upper float activates the contact system when 3 150 to 300 cm of oil is forced out and the lower float when oil flows at the speed from 65 to 150 cm/s ( these values can be adjusted ). Characteristics of the " reed " contact : - rated thermal current Ith : 2 A - rated operational voltage Ue : 230 Va.c./d.c. (min. 12 V) - rated operational current Ie : 2 A - AC15 / DC13 (min. 10 mA) - testing voltage : 2000 V; 50 Hz; 1 min. - contact type : 2 x NO ( make ) Relay 2RB is in accordance with the standards DIN VDE 0660, DIN 42566 and N.H1.050.

RkJQdWJsaXNoZXIy Mzk3OTY=