{"id":75,"date":"2020-03-12T17:47:32","date_gmt":"2020-03-12T17:47:32","guid":{"rendered":"https:\/\/www.metalika-volf.com\/?p=75"},"modified":"2025-02-27T15:04:16","modified_gmt":"2025-02-27T15:04:16","slug":"problemi-u-eksploataciji-i-njihovo-otklanjanje","status":"publish","type":"post","link":"https:\/\/www.metalika-volf.com\/en\/problemi-u-eksploataciji-i-njihovo-otklanjanje\/","title":{"rendered":"Problems in exploitation and their elimination"},"content":{"rendered":"<h2>Problemi u eksploataciji i njihovo otklanjanje<\/h2>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2020\/03\/cetkice-2.bmp\" alt=\"\u010detkice\"><\/p>\n<ul>\n<li>\n<h2>Kako otkloniti jako varni\u010denje elektro \u010detkica?<\/h2>\n<p> Problemi u eksploataciji i njihovo otklanjanje <\/p>\n<div>\n<p data-start=\"59\" data-end=\"345\">Jako varni\u010denje elektro \u010detkica mo\u017ee ukazivati na ozbiljne probleme u radu elektromotora. Ako se ne otkloni na vreme, mo\u017ee dovesti do pregrevanja, pove\u0107anog habanja kolektora i \u010detkica, pa \u010dak i do o\u0161te\u0107enja motora. Postoji vi\u0161e uzroka varni\u010denja, a re\u0161enje zavisi od ta\u010dnog problema.<\/p>\n<hr data-start=\"347\" data-end=\"350\" \/>\n<h2 data-start=\"352\" data-end=\"405\">Naj\u010de\u0161\u0107i uzroci varni\u010denja i njihova re\u0161enja<\/h2>\n<h3 data-start=\"407\" data-end=\"464\">1. Istro\u0161ene ili nepravilno postavljene \u010detkice<\/h3>\n<p data-start=\"465\" data-end=\"586\">\ud83d\udccc <strong data-start=\"468\" data-end=\"480\">Problem:<\/strong> Ako su \u010detkice previ\u0161e istro\u0161ene, ne nale\u017eu pravilno na kolektor, \u0161to izaziva lo\u0161 kontakt i varni\u010denje.<\/p>\n<p data-start=\"588\" data-end=\"919\">\u2705 <strong data-start=\"590\" data-end=\"602\">Re\u0161enje:<\/strong><br data-start=\"602\" data-end=\"605\" \/>\u2714 Proveriti du\u017einu \u010detkica \u2013 ako su prekratke, potrebno ih je zameniti.<br data-start=\"676\" data-end=\"679\" \/>\u2714 Osigurati da \u010detkice pravilno nale\u017eu na kolektor. Ako su nove, mogu se blago oblikovati prema kolektoru pomo\u0107u finog brusnog papira.<br data-start=\"813\" data-end=\"816\" \/>\u2714 Proveriti da li su \u010detkice pravilno postavljene u le\u017ei\u0161te \u2013 moraju slobodno kliziti bez zapinjanja.<\/p>\n<hr data-start=\"921\" data-end=\"924\" \/>\n<h3 data-start=\"926\" data-end=\"966\">2. Prljav ili o\u0161te\u0107en kolektor<\/h3>\n<p data-start=\"967\" data-end=\"1112\">\ud83d\udccc <strong data-start=\"970\" data-end=\"982\">Problem:<\/strong> Ako je kolektor zaprljan uljem, grafitnom pra\u0161inom ili oksidacijom, kontakt sa \u010detkicama mo\u017ee biti lo\u0161, \u0161to izaziva varni\u010denje.<\/p>\n<p data-start=\"1114\" data-end=\"1463\">\u2705 <strong data-start=\"1116\" data-end=\"1128\">Re\u0161enje:<\/strong><br data-start=\"1128\" data-end=\"1131\" \/>\u2714 O\u010distiti kolektor mekom krpom natopljenom u izopropil alkohol.<br data-start=\"1195\" data-end=\"1198\" \/>\u2714 Ako postoje naslage grafita, kolektor se mo\u017ee lagano prebrusiti finim brusnim papirom (granulacija 600-800).<br data-start=\"1308\" data-end=\"1311\" \/>\u2714 Proveriti da li su bakarne lamele kolektora ravne i glatke. Ako su previ\u0161e istro\u0161ene ili neravne, potrebno ih je obraditi struganjem ili tokarenjem.<\/p>\n<hr data-start=\"1465\" data-end=\"1468\" \/>\n<h3 data-start=\"1470\" data-end=\"1526\">3. Previsoka ili preniska opru\u017ena sila \u010detkica<\/h3>\n<p data-start=\"1527\" data-end=\"1739\">\ud83d\udccc <strong data-start=\"1530\" data-end=\"1542\">Problem:<\/strong> Ako opruge koje dr\u017ee \u010detkice ne pritiskaju dovoljno jako, mo\u017ee do\u0107i do isprekidanog kontakta i varni\u010denja. Ako pritisak opruga prevelik, \u010detkice se prebrzo habaju i dolazi do prekomernog trenja.<\/p>\n<p data-start=\"1741\" data-end=\"1892\">\u2705 <strong data-start=\"1743\" data-end=\"1755\">Re\u0161enje:<\/strong><br data-start=\"1755\" data-end=\"1758\" \/>\u2714 Proveriti i podesiti pritisak opruga prema preporukama proizvo\u0111a\u010da motora.<br data-start=\"1834\" data-end=\"1837\" \/>\u2714 Ako su opruge oslabljene, treba ih zameniti novima.<\/p>\n<hr data-start=\"1894\" data-end=\"1897\" \/>\n<h3 data-start=\"1899\" data-end=\"1946\">4. Pogre\u0161an materijal elektro \u010detkica<\/h3>\n<p data-start=\"1947\" data-end=\"2082\">\ud83d\udccc <strong data-start=\"1950\" data-end=\"1962\">Problem:<\/strong> Ako su \u010detkice od neodgovaraju\u0107eg materijala (npr. premekane ili pretvrde), mo\u017ee do\u0107i do lo\u0161eg kontakta i varni\u010denja.<\/p>\n<p data-start=\"2084\" data-end=\"2306\">\u2705 <strong data-start=\"2086\" data-end=\"2098\">Re\u0161enje:<\/strong><br data-start=\"2098\" data-end=\"2101\" \/>\u2714 Koristiti elektro \u010detkice odgovaraju\u0107e vrste i tvrdo\u0107e za konkretan tip motora.<br data-start=\"2182\" data-end=\"2185\" \/>\u2714 Ako niste sigurni koji materijal koristiti, konsultujte se sa proizvo\u0111a\u010dem motora ili stru\u010dnjakom za elektro \u010detkice.<\/p>\n<hr data-start=\"2308\" data-end=\"2311\" \/>\n<h3 data-start=\"2313\" data-end=\"2364\">5. Labavi ili o\u0161te\u0107eni elektri\u010dni spojevi<\/h3>\n<p data-start=\"2365\" data-end=\"2498\">\ud83d\udccc <strong data-start=\"2368\" data-end=\"2380\">Problem:<\/strong> Ako su elektri\u010dni priklju\u010dci motora labavi ili korodirani, mo\u017ee do\u0107i do varni\u010denja zbog nepravilnog protoka struje.<\/p>\n<p data-start=\"2500\" data-end=\"2628\">\u2705 <strong data-start=\"2502\" data-end=\"2514\">Re\u0161enje:<\/strong><br data-start=\"2514\" data-end=\"2517\" \/>\u2714 Proveriti sve elektri\u010dne spojeve i priklju\u010dke.<br data-start=\"2565\" data-end=\"2568\" \/>\u2714 O\u010distiti korodirane kontakte i zategnuti labave spojeve.<\/p>\n<hr data-start=\"2630\" data-end=\"2633\" \/>\n<h3 data-start=\"2635\" data-end=\"2669\">6. Preoptere\u0107enje motora<\/h3>\n<p data-start=\"2670\" data-end=\"2808\">\ud83d\udccc <strong data-start=\"2673\" data-end=\"2685\">Problem:<\/strong> Ako motor radi pod prevelikim optere\u0107enjem, dolazi do pove\u0107ane potro\u0161nje struje, \u0161to mo\u017ee uzrokovati varni\u010denje \u010detkica.<\/p>\n<p data-start=\"2810\" data-end=\"2977\">\u2705 <strong data-start=\"2812\" data-end=\"2824\">Re\u0161enje:<\/strong><br data-start=\"2824\" data-end=\"2827\" \/>\u2714 Proveriti da li motor radi u okviru svojih nominalnih specifikacija.<br data-start=\"2897\" data-end=\"2900\" \/>\u2714 Ako je optere\u0107enje preveliko, smanjiti ga ili koristiti motor ve\u0107e snage.<\/p>\n<\/div>\n<\/li>\n<li>\n<h2>Re\u0161enje problema ubrzane potro\u0161nje kolektora i kliznog prstena<\/h2>\n<p>Ubrzana potro\u0161nja kolektora i kliznog prstena<\/p>\n<div>\n<p data-start=\"72\" data-end=\"426\">Ubrzana potro\u0161nja kolektora i kliznog prstena mo\u017ee dovesti do ozbiljnih problema u radu elektri\u010dnih motora, uklju\u010duju\u0107i smanjenje efikasnosti, pove\u0107ane tro\u0161kove odr\u017eavanja i kvarove sistema. Ovaj problem naj\u010de\u0161\u0107e nastaje zbog nepravilnog rada elektro \u010detkica, lo\u0161e elektri\u010dne ili mehani\u010dke povezanosti, prekomernog trenja ili nepovoljnih radnih uslova.<\/p>\n<h2 data-start=\"428\" data-end=\"489\">Uzroci ubrzane potro\u0161nje kolektora i kliznog prstena<\/h2>\n<p data-start=\"490\" data-end=\"590\">Pre nego \u0161to se prona\u0111e pravo re\u0161enje, va\u017eno je identifikovati uzrok problema. Naj\u010de\u0161\u0107i uzroci su:<\/p>\n<ul data-start=\"591\" data-end=\"1013\">\n<li data-start=\"591\" data-end=\"665\"><strong data-start=\"593\" data-end=\"627\">Neodgovaraju\u0107e elektro \u010detkice<\/strong> (pogre\u0161an materijal ili dimenzije).<\/li>\n<li data-start=\"666\" data-end=\"723\"><strong data-start=\"668\" data-end=\"699\">Nepravilan pritisak \u010detkica<\/strong> (prejak ili preslab).<\/li>\n<li data-start=\"724\" data-end=\"813\"><strong data-start=\"726\" data-end=\"775\">Lo\u0161e poravnanje kolektora ili kliznog prstena<\/strong> (vibracije i neujedna\u010deno habanje).<\/li>\n<li data-start=\"814\" data-end=\"880\"><strong data-start=\"816\" data-end=\"841\">Prekomerno varni\u010denje<\/strong> (lo\u0161 kontakt \u010detkica sa kolektorom).<\/li>\n<li data-start=\"881\" data-end=\"941\"><strong data-start=\"883\" data-end=\"910\">Zaga\u0111enje i prljav\u0161tina<\/strong> (ulje, pra\u0161ina, oksidacija).<\/li>\n<li data-start=\"942\" data-end=\"1013\"><strong data-start=\"944\" data-end=\"972\">Visoka radna temperatura<\/strong> (preoptere\u0107enje ili lo\u0161a ventilacija).<\/li>\n<\/ul>\n<h2 data-start=\"1015\" data-end=\"1052\">Koraci za re\u0161avanje problema<\/h2>\n<h3 data-start=\"1054\" data-end=\"1099\">1. Provera i zamena elektro \u010detkica<\/h3>\n<p data-start=\"1100\" data-end=\"1560\">\u2714 <strong data-start=\"1102\" data-end=\"1140\">Koristiti odgovaraju\u0107i tip \u010detkica<\/strong> \u2013 razli\u010diti kolektori i klizni prstenovi zahtevaju razli\u010dite vrste \u010detkica (grafitne, bakro-grafitne, srebrne). Konsultujte tehni\u010dke specifikacije motora.<br data-start=\"1295\" data-end=\"1298\" \/>\u2714 <strong data-start=\"1300\" data-end=\"1330\">Pravilna dimenzija \u010detkica<\/strong> \u2013 ako su prevelike ili premale, dolazi do neujedna\u010denog habanja i prekomernog zagrevanja.<br data-start=\"1420\" data-end=\"1423\" \/>\u2714 <strong data-start=\"1425\" data-end=\"1455\">Proveriti pritisak \u010detkica<\/strong> \u2013 optimalan pritisak treba omogu\u0107iti dobar kontakt, ali ne sme biti prejak kako bi se smanjilo trenje.<\/p>\n<h3 data-start=\"1562\" data-end=\"1624\">2. Odr\u017eavanje i \u010di\u0161\u0107enje kolektora i kliznog prstena<\/h3>\n<p data-start=\"1625\" data-end=\"2093\">\u2714 <strong data-start=\"1627\" data-end=\"1647\">Redovno \u010di\u0161\u0107enje<\/strong> \u2013 uklanjanje pra\u0161ine, ulja i oksidacije pomo\u0107u specijalnih rastvora ili finih abrazivnih materijala (npr. smirkasti papir vrlo fine granulacije P600-P1000).<br data-start=\"1804\" data-end=\"1807\" \/>\u2714 <strong data-start=\"1809\" data-end=\"1832\">Poliranje kolektora<\/strong> \u2013 ako je kolektor previ\u0161e grub, mo\u017ee pove\u0107ati potro\u0161nju \u010detkica. Poliranje mo\u017ee pobolj\u0161ati kontakt i smanjiti habanje.<br data-start=\"1951\" data-end=\"1954\" \/>\u2714 <strong data-start=\"1956\" data-end=\"1992\">Izbegavanje prekomernog \u010di\u0161\u0107enja<\/strong> \u2013 suvi\u0161e agresivno \u010di\u0161\u0107enje mo\u017ee ukloniti za\u0161titni sloj kolektora i dovesti do jo\u0161 br\u017eeg tro\u0161enja.<\/p>\n<h3 data-start=\"2095\" data-end=\"2149\">3. Provera mehani\u010dkog poravnanja i vibracija<\/h3>\n<p data-start=\"2150\" data-end=\"2529\">\u2714 <strong data-start=\"2152\" data-end=\"2185\">Proveriti centriranost rotora<\/strong> \u2013 ako kolektor ili klizni prsten nije pravilno postavljen, mo\u017ee uzrokovati vibracije i neujedna\u010deno habanje.<br data-start=\"2294\" data-end=\"2297\" \/>\u2714 <strong data-start=\"2299\" data-end=\"2322\">Balansiranje rotora<\/strong> \u2013 nebalansiran rotor mo\u017ee dovesti do prekomernog trenja \u010detkica i varni\u010denja.<br data-start=\"2400\" data-end=\"2403\" \/>\u2714 <strong data-start=\"2405\" data-end=\"2440\">Osigurati pravilan rad le\u017eajeva<\/strong> \u2013 istro\u0161eni le\u017eajevi mogu izazvati ekscentri\u010dno kretanje rotora, \u0161to pove\u0107ava habanje.<\/p>\n<h3 data-start=\"2531\" data-end=\"2578\">4. Smanjenje varni\u010denja i pregrevanja<\/h3>\n<p data-start=\"2579\" data-end=\"2938\">\u2714 <strong data-start=\"2581\" data-end=\"2617\">Proveriti elektri\u010dnu instalaciju<\/strong> \u2013 lo\u0161e priklju\u010dene \u017eice, visoka struja ili oscilacije napona mogu uzrokovati varni\u010denje.<br data-start=\"2706\" data-end=\"2709\" \/>\u2714 <strong data-start=\"2711\" data-end=\"2760\">Koristiti \u010detkice sa boljim samopodmazivanjem<\/strong> \u2013 ako su kolektor i \u010detkice suvi\u0161e suvi, mo\u017ee do\u0107i do pregrevanja.<br data-start=\"2827\" data-end=\"2830\" \/>\u2714 <strong data-start=\"2832\" data-end=\"2870\">Osigurati dobru ventilaciju motora<\/strong> \u2013 pregrevanje mo\u017ee ubrzati potro\u0161nju kolektora i kliznog prstena.<\/p>\n<h3 data-start=\"2940\" data-end=\"2983\">5. Pravilna upotreba i odr\u017eavanje<\/h3>\n<p data-start=\"2984\" data-end=\"3367\">\u2714 <strong data-start=\"2986\" data-end=\"3022\">Izbegavati preoptere\u0107enje motora<\/strong> \u2013 rad iznad nominalnog optere\u0107enja pove\u0107ava potro\u0161nju \u010detkica i kolektora.<br data-start=\"3097\" data-end=\"3100\" \/>\u2714 <strong data-start=\"3102\" data-end=\"3147\">Redovni pregledi i preventivno odr\u017eavanje<\/strong> \u2013 planirano odr\u017eavanje smanjuje rizik od iznenadnih kvarova i produ\u017eava vek trajanja sistema.<br data-start=\"3241\" data-end=\"3244\" \/>\u2714 <strong data-start=\"3246\" data-end=\"3287\">Upotreba kvalitetnih rezervnih delova<\/strong> \u2013 lo\u0161 kvalitet \u010detkica, kolektora ili kliznih prstenova mo\u017ee ubrzati habanje.<\/p>\n<\/div>\n<\/li>\n<li>\n<h2>Kako re\u0161iti probelm neravnomerne potro\u0161nje elektro \u010detkica?<\/h2>\n<p> Problemi u eksploataciji i njihovo otklanjanje<\/p>\n<div>\n<p data-start=\"70\" data-end=\"431\">Neravnomerna potro\u0161nja elektro \u010detkica mo\u017ee dovesti do lo\u0161eg kontakta, pregrevanja, varni\u010denja i skra\u0107enog veka trajanja elektromotora. Ovaj problem mo\u017ee biti uzrokovan razli\u010ditim faktorima, kao \u0161to su nepravilan pritisak \u010detkica, o\u0161te\u0107en kolektor, vibracije, lo\u0161e poravnanje ili prljav\u0161tina u sistemu. U nastavku su klju\u010dni koraci za re\u0161avanje ovog problema.<\/p>\n<h3 data-start=\"433\" data-end=\"484\">1. Provera i pode\u0161avanje pritiska \u010detkica<\/h3>\n<p data-start=\"485\" data-end=\"914\">\u2714 <strong data-start=\"487\" data-end=\"551\">Nepravilan pritisak \u010detkica na kolektor ili klizne prstenove<\/strong> mo\u017ee dovesti do neujedna\u010denog tro\u0161enja. Ako je pritisak prevelik, \u010detkice se brzo tro\u0161e, dok previ\u0161e labave \u010detkice mogu izazvati varni\u010denje.<br data-start=\"693\" data-end=\"696\" \/>\u2714 <strong data-start=\"698\" data-end=\"714\">Kako re\u0161iti?<\/strong> Podesite opruge tako da pritisak bude u granicama preporu\u010denih vrednosti proizvo\u0111a\u010da. Uobi\u010dajeno, pritisak treba biti izme\u0111u <strong data-start=\"840\" data-end=\"869\">15 i 25 kPa (kilopaskala)<\/strong>, ali ta\u010dna vrednost zavisi od tipa motora.<\/p>\n<h3 data-start=\"916\" data-end=\"979\">2. Provera i \u010di\u0161\u0107enje kolektora ili kliznih prstenova<\/h3>\n<p data-start=\"980\" data-end=\"1104\">\u2714 Neravnomerno tro\u0161enje \u010detkica mo\u017ee biti posledica <strong data-start=\"1032\" data-end=\"1080\">prljavog, oksidovanog ili neravnog kolektora<\/strong>.<br data-start=\"1081\" data-end=\"1084\" \/>\u2714 <strong data-start=\"1086\" data-end=\"1102\">Kako re\u0161iti?<\/strong><\/p>\n<ul data-start=\"1105\" data-end=\"1493\">\n<li data-start=\"1105\" data-end=\"1239\">O\u010distite kolektor specijalnim brusnim papirom fine granulacije (<strong data-start=\"1171\" data-end=\"1197\">izme\u0111u 600 i 1000 grit<\/strong>) ili kamen\u010di\u0107ima za \u010di\u0161\u0107enje kolektora.<\/li>\n<li data-start=\"1240\" data-end=\"1360\">Uklonite naslage ulja, pra\u0161ine ili grafita pomo\u0107u alkohola ili specijalnih sredstava za \u010di\u0161\u0107enje elektro komponenti.<\/li>\n<li data-start=\"1361\" data-end=\"1493\">Ako je kolektor vidno o\u0161te\u0107en (duboke ogrebotine, deformacije), potrebno je <strong data-start=\"1439\" data-end=\"1490\">precizno struganje (tokarenje) i fino poliranje<\/strong>.<\/li>\n<\/ul>\n<h3 data-start=\"1495\" data-end=\"1548\">3. Provera poravnatosti \u010detkica i kolektora<\/h3>\n<p data-start=\"1549\" data-end=\"1698\">\u2714 Ako su \u010detkice nepravilno postavljene ili nisu centrirane, mo\u017ee do\u0107i do <strong data-start=\"1623\" data-end=\"1674\">neravnomernog kontakta i neujedna\u010denog tro\u0161enja<\/strong>.<br data-start=\"1675\" data-end=\"1678\" \/>\u2714 <strong data-start=\"1680\" data-end=\"1696\">Kako re\u0161iti?<\/strong><\/p>\n<ul data-start=\"1699\" data-end=\"1975\">\n<li data-start=\"1699\" data-end=\"1759\">Proverite da li su le\u017ei\u0161ta \u010detkica ispravno postavljena.<\/li>\n<li data-start=\"1760\" data-end=\"1847\">Ako se \u010detkice ne pomeraju glatko u svojim nosa\u010dima, o\u010distite ili zamenite le\u017ei\u0161ta.<\/li>\n<li data-start=\"1848\" data-end=\"1975\">Uverite se da su kolektor i osovina motora <strong data-start=\"1893\" data-end=\"1914\">dobro balansirani<\/strong>, jer vibracije mogu ubrzati neravnomerno tro\u0161enje \u010detkica.<\/li>\n<\/ul>\n<h3 data-start=\"1977\" data-end=\"2035\">4. Zamena neodgovaraju\u0107ih ili dotrajalih \u010detkica<\/h3>\n<p data-start=\"2036\" data-end=\"2119\">\u2714 Pogre\u0161an tip \u010detkica mo\u017ee uzrokovati neravnomerno habanje.<br data-start=\"2096\" data-end=\"2099\" \/>\u2714 <strong data-start=\"2101\" data-end=\"2117\">Kako re\u0161iti?<\/strong><\/p>\n<ul data-start=\"2120\" data-end=\"2438\">\n<li data-start=\"2120\" data-end=\"2226\">Koristite \u010detkice koje odgovaraju originalnim specifikacijama motora (materijal, dimenzije i tvrdo\u0107a).<\/li>\n<li data-start=\"2227\" data-end=\"2326\">U slu\u010daju ekstremnog tro\u0161enja, zamenite \u010detkice novima i pravilno ih oblikujte prema kolektoru.<\/li>\n<li data-start=\"2327\" data-end=\"2438\">Prilikom zamene, uverite se da sve \u010detkice u motoru imaju <strong data-start=\"2387\" data-end=\"2404\">sli\u010dnu du\u017einu<\/strong> kako bi pritisak bio ujedna\u010den.<\/li>\n<\/ul>\n<h3 data-start=\"2440\" data-end=\"2516\">5. Provera elektri\u010dnih problema (strujna optere\u0107enja i varni\u010denje)<\/h3>\n<p data-start=\"2517\" data-end=\"2623\">\u2714 Prekomerno varni\u010denje mo\u017ee izazvati poja\u010dano habanje i o\u0161te\u0107enje elektro \u010detkica.<br data-start=\"2600\" data-end=\"2603\" \/>\u2714 <strong data-start=\"2605\" data-end=\"2621\">Kako re\u0161iti?<\/strong><\/p>\n<ul data-start=\"2624\" data-end=\"2917\">\n<li data-start=\"2624\" data-end=\"2711\">Proverite da li motor radi unutar <strong data-start=\"2660\" data-end=\"2708\">predvi\u0111enih naponskih i strujnih optere\u0107enja<\/strong>.<\/li>\n<li data-start=\"2712\" data-end=\"2820\">Pregledajte elektri\u010dne spojeve i eliminisanje lo\u0161ih kontakata koji mogu izazvati nestabilan rad \u010detkica.<\/li>\n<li data-start=\"2821\" data-end=\"2917\">Ugradite <strong data-start=\"2832\" data-end=\"2880\">ispravne prigu\u0161ne elemente (npr. RC filtere)<\/strong> ako postoji prekomerno varni\u010denje.<\/li>\n<\/ul>\n<h3 data-start=\"2919\" data-end=\"2985\">6. Pravilno balansiranje rotora i eliminisanje vibracija<\/h3>\n<p data-start=\"2986\" data-end=\"3095\">\u2714 Ako rotor nije dobro balansiran, dolazi do vibracija koje ubrzavaju habanje \u010detkica.<br data-start=\"3072\" data-end=\"3075\" \/>\u2714 <strong data-start=\"3077\" data-end=\"3093\">Kako re\u0161iti?<\/strong><\/p>\n<ul data-start=\"3096\" data-end=\"3333\">\n<li data-start=\"3096\" data-end=\"3195\">Proverite balansiranje rotora i po potrebi izvr\u0161ite precizno pode\u0161avanje u servisnoj radionici.<\/li>\n<li data-start=\"3196\" data-end=\"3333\">Uverite se da le\u017eajevi motora nisu istro\u0161eni, jer istro\u0161eni le\u017eajevi mogu uzrokovati pomeranje rotora i neravnomerno habanje \u010detkica.<\/li>\n<\/ul>\n<\/div>\n<\/li>\n<\/ul>\n<p><!--more--><br \/>\n<!-- {\"type\":\"layout\",\"children\":[{\"type\":\"section\",\"props\":{\"image_position\":\"center-center\",\"style\":\"default\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"middle\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\"},\"children\":[{\"type\":\"headline\",\"props\":{\"content\":\"Problemi u eksploataciji i njihovo otklanjanje\",\"title_decoration\":\"bullet\",\"title_element\":\"h2\"}}]}]},{\"type\":\"row\",\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\"},\"children\":[{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2020\\\/03\\\/cetkice-2.bmp\",\"image_alt\":\"\\u010detkice\",\"image_svg_color\":\"emphasis\",\"margin\":\"default\"}}]}]},{\"type\":\"row\",\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\"},\"children\":[{\"type\":\"grid\",\"props\":{\"content_column_breakpoint\":\"m\",\"filter_align\":\"left\",\"filter_all\":true,\"filter_grid_breakpoint\":\"m\",\"filter_grid_width\":\"auto\",\"filter_position\":\"top\",\"filter_style\":\"tab\",\"grid_default\":\"1\",\"grid_masonry\":\"pack\",\"grid_medium\":\"2\",\"icon_width\":80,\"image_align\":\"top\",\"image_grid_breakpoint\":\"m\",\"image_grid_width\":\"1-2\",\"image_svg_color\":\"emphasis\",\"item_animation\":true,\"lightbox_bg_close\":true,\"link_style\":\"default\",\"link_text\":\"Read more\",\"margin\":\"default\",\"meta_align\":\"below-title\",\"meta_element\":\"div\",\"meta_style\":\"text-meta\",\"panel_image_no_padding\":true,\"panel_padding\":\"small\",\"panel_style\":\"card-default\",\"show_content\":true,\"show_hover_image\":true,\"show_hover_video\":true,\"show_image\":true,\"show_link\":true,\"show_meta\":true,\"show_title\":true,\"show_video\":true,\"title_align\":\"top\",\"title_decoration\":\"line\",\"title_element\":\"h2\",\"title_grid_breakpoint\":\"m\",\"title_grid_width\":\"1-2\",\"title_hover_style\":\"reset\",\"title_style\":\"h2\"},\"children\":[{\"type\":\"grid_item\",\"props\":{\"content\":\"\n\n<p data-start=\\\"59\\\" data-end=\\\"345\\\">Jako varni\\u010denje elektro \\u010detkica mo\\u017ee ukazivati na ozbiljne probleme u radu elektromotora. Ako se ne otkloni na vreme, mo\\u017ee dovesti do pregrevanja, pove\\u0107anog habanja kolektora i \\u010detkica, pa \\u010dak i do o\\u0161te\\u0107enja motora. Postoji vi\\u0161e uzroka varni\\u010denja, a re\\u0161enje zavisi od ta\\u010dnog problema.<\\\/p>\\n\n\n<hr data-start=\\\"347\\\" data-end=\\\"350\\\" \\\/>\\n\n\n<h2 data-start=\\\"352\\\" data-end=\\\"405\\\">Naj\\u010de\\u0161\\u0107i uzroci varni\\u010denja i njihova re\\u0161enja<\\\/h2>\\n\n\n<h3 data-start=\\\"407\\\" data-end=\\\"464\\\">1. Istro\\u0161ene ili nepravilno postavljene \\u010detkice<\\\/h3>\\n\n\n<p data-start=\\\"465\\\" data-end=\\\"586\\\">\\ud83d\\udccc <strong data-start=\\\"468\\\" data-end=\\\"480\\\">Problem:<\\\/strong> Ako su \\u010detkice previ\\u0161e istro\\u0161ene, ne nale\\u017eu pravilno na kolektor, \\u0161to izaziva lo\\u0161 kontakt i varni\\u010denje.<\\\/p>\\n\n\n<p data-start=\\\"588\\\" data-end=\\\"919\\\">\\u2705 <strong data-start=\\\"590\\\" data-end=\\\"602\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"602\\\" data-end=\\\"605\\\" \\\/>\\u2714 Proveriti du\\u017einu \\u010detkica \\u2013 ako su prekratke, potrebno ih je zameniti.<br data-start=\\\"676\\\" data-end=\\\"679\\\" \\\/>\\u2714 Osigurati da \\u010detkice pravilno nale\\u017eu na kolektor. Ako su nove, mogu se blago oblikovati prema kolektoru pomo\\u0107u finog brusnog papira.<br data-start=\\\"813\\\" data-end=\\\"816\\\" \\\/>\\u2714 Proveriti da li su \\u010detkice pravilno postavljene u le\\u017ei\\u0161te \\u2013 moraju slobodno kliziti bez zapinjanja.<\\\/p>\\n\n\n<hr data-start=\\\"921\\\" data-end=\\\"924\\\" \\\/>\\n\n\n<h3 data-start=\\\"926\\\" data-end=\\\"966\\\">2. Prljav ili o\\u0161te\\u0107en kolektor<\\\/h3>\\n\n\n<p data-start=\\\"967\\\" data-end=\\\"1112\\\">\\ud83d\\udccc <strong data-start=\\\"970\\\" data-end=\\\"982\\\">Problem:<\\\/strong> Ako je kolektor zaprljan uljem, grafitnom pra\\u0161inom ili oksidacijom, kontakt sa \\u010detkicama mo\\u017ee biti lo\\u0161, \\u0161to izaziva varni\\u010denje.<\\\/p>\\n\n\n<p data-start=\\\"1114\\\" data-end=\\\"1463\\\">\\u2705 <strong data-start=\\\"1116\\\" data-end=\\\"1128\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"1128\\\" data-end=\\\"1131\\\" \\\/>\\u2714 O\\u010distiti kolektor mekom krpom natopljenom u izopropil alkohol.<br data-start=\\\"1195\\\" data-end=\\\"1198\\\" \\\/>\\u2714 Ako postoje naslage grafita, kolektor se mo\\u017ee lagano prebrusiti finim brusnim papirom (granulacija 600-800).<br data-start=\\\"1308\\\" data-end=\\\"1311\\\" \\\/>\\u2714 Proveriti da li su bakarne lamele kolektora ravne i glatke. Ako su previ\\u0161e istro\\u0161ene ili neravne, potrebno ih je obraditi struganjem ili tokarenjem.<\\\/p>\\n\n\n<hr data-start=\\\"1465\\\" data-end=\\\"1468\\\" \\\/>\\n\n\n<h3 data-start=\\\"1470\\\" data-end=\\\"1526\\\">3. Previsoka ili preniska opru\\u017ena sila \\u010detkica<\\\/h3>\\n\n\n<p data-start=\\\"1527\\\" data-end=\\\"1739\\\">\\ud83d\\udccc <strong data-start=\\\"1530\\\" data-end=\\\"1542\\\">Problem:<\\\/strong> Ako opruge koje dr\\u017ee \\u010detkice ne pritiskaju dovoljno jako, mo\\u017ee do\\u0107i do isprekidanog kontakta i varni\\u010denja. Ako pritisak opruga prevelik, \\u010detkice se prebrzo habaju i dolazi do prekomernog trenja.<\\\/p>\\n\n\n<p data-start=\\\"1741\\\" data-end=\\\"1892\\\">\\u2705 <strong data-start=\\\"1743\\\" data-end=\\\"1755\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"1755\\\" data-end=\\\"1758\\\" \\\/>\\u2714 Proveriti i podesiti pritisak opruga prema preporukama proizvo\\u0111a\\u010da motora.<br data-start=\\\"1834\\\" data-end=\\\"1837\\\" \\\/>\\u2714 Ako su opruge oslabljene, treba ih zameniti novima.<\\\/p>\\n\n\n<hr data-start=\\\"1894\\\" data-end=\\\"1897\\\" \\\/>\\n\n\n<h3 data-start=\\\"1899\\\" data-end=\\\"1946\\\">4. Pogre\\u0161an materijal elektro \\u010detkica<\\\/h3>\\n\n\n<p data-start=\\\"1947\\\" data-end=\\\"2082\\\">\\ud83d\\udccc <strong data-start=\\\"1950\\\" data-end=\\\"1962\\\">Problem:<\\\/strong> Ako su \\u010detkice od neodgovaraju\\u0107eg materijala (npr. premekane ili pretvrde), mo\\u017ee do\\u0107i do lo\\u0161eg kontakta i varni\\u010denja.<\\\/p>\\n\n\n<p data-start=\\\"2084\\\" data-end=\\\"2306\\\">\\u2705 <strong data-start=\\\"2086\\\" data-end=\\\"2098\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"2098\\\" data-end=\\\"2101\\\" \\\/>\\u2714 Koristiti elektro \\u010detkice odgovaraju\\u0107e vrste i tvrdo\\u0107e za konkretan tip motora.<br data-start=\\\"2182\\\" data-end=\\\"2185\\\" \\\/>\\u2714 Ako niste sigurni koji materijal koristiti, konsultujte se sa proizvo\\u0111a\\u010dem motora ili stru\\u010dnjakom za elektro \\u010detkice.<\\\/p>\\n\n\n<hr data-start=\\\"2308\\\" data-end=\\\"2311\\\" \\\/>\\n\n\n<h3 data-start=\\\"2313\\\" data-end=\\\"2364\\\">5. Labavi ili o\\u0161te\\u0107eni elektri\\u010dni spojevi<\\\/h3>\\n\n\n<p data-start=\\\"2365\\\" data-end=\\\"2498\\\">\\ud83d\\udccc <strong data-start=\\\"2368\\\" data-end=\\\"2380\\\">Problem:<\\\/strong> Ako su elektri\\u010dni priklju\\u010dci motora labavi ili korodirani, mo\\u017ee do\\u0107i do varni\\u010denja zbog nepravilnog protoka struje.<\\\/p>\\n\n\n<p data-start=\\\"2500\\\" data-end=\\\"2628\\\">\\u2705 <strong data-start=\\\"2502\\\" data-end=\\\"2514\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"2514\\\" data-end=\\\"2517\\\" \\\/>\\u2714 Proveriti sve elektri\\u010dne spojeve i priklju\\u010dke.<br data-start=\\\"2565\\\" data-end=\\\"2568\\\" \\\/>\\u2714 O\\u010distiti korodirane kontakte i zategnuti labave spojeve.<\\\/p>\\n\n\n<hr data-start=\\\"2630\\\" data-end=\\\"2633\\\" \\\/>\\n\n\n<h3 data-start=\\\"2635\\\" data-end=\\\"2669\\\">6. Preoptere\\u0107enje motora<\\\/h3>\\n\n\n<p data-start=\\\"2670\\\" data-end=\\\"2808\\\">\\ud83d\\udccc <strong data-start=\\\"2673\\\" data-end=\\\"2685\\\">Problem:<\\\/strong> Ako motor radi pod prevelikim optere\\u0107enjem, dolazi do pove\\u0107ane potro\\u0161nje struje, \\u0161to mo\\u017ee uzrokovati varni\\u010denje \\u010detkica.<\\\/p>\\n\n\n<p data-start=\\\"2810\\\" data-end=\\\"2977\\\">\\u2705 <strong data-start=\\\"2812\\\" data-end=\\\"2824\\\">Re\\u0161enje:<\\\/strong><br data-start=\\\"2824\\\" data-end=\\\"2827\\\" \\\/>\\u2714 Proveriti da li motor radi u okviru svojih nominalnih specifikacija.<br data-start=\\\"2897\\\" data-end=\\\"2900\\\" \\\/>\\u2714 Ako je optere\\u0107enje preveliko, smanjiti ga ili koristiti motor ve\\u0107e snage.<\\\/p>\",\"meta\":\" Problemi u eksploataciji i njihovo otklanjanje \",\"title\":\"Kako otkloniti jako varni\\u010denje elektro \\u010detkica?\"}},{\"type\":\"grid_item\",\"props\":{\"content\":\"\n\n<p data-start=\\\"72\\\" data-end=\\\"426\\\">Ubrzana potro\\u0161nja kolektora i kliznog prstena mo\\u017ee dovesti do ozbiljnih problema u radu elektri\\u010dnih motora, uklju\\u010duju\\u0107i smanjenje efikasnosti, pove\\u0107ane tro\\u0161kove odr\\u017eavanja i kvarove sistema. Ovaj problem naj\\u010de\\u0161\\u0107e nastaje zbog nepravilnog rada elektro \\u010detkica, lo\\u0161e elektri\\u010dne ili mehani\\u010dke povezanosti, prekomernog trenja ili nepovoljnih radnih uslova.<\\\/p>\\n\n\n<h2 data-start=\\\"428\\\" data-end=\\\"489\\\">Uzroci ubrzane potro\\u0161nje kolektora i kliznog prstena<\\\/h2>\\n\n\n<p data-start=\\\"490\\\" data-end=\\\"590\\\">Pre nego \\u0161to se prona\\u0111e pravo re\\u0161enje, va\\u017eno je identifikovati uzrok problema. Naj\\u010de\\u0161\\u0107i uzroci su:<\\\/p>\\n\n\n<ul data-start=\\\"591\\\" data-end=\\\"1013\\\">\\n\n\n<li data-start=\\\"591\\\" data-end=\\\"665\\\"><strong data-start=\\\"593\\\" data-end=\\\"627\\\">Neodgovaraju\\u0107e elektro \\u010detkice<\\\/strong> (pogre\\u0161an materijal ili dimenzije).<\\\/li>\\n\n\n<li data-start=\\\"666\\\" data-end=\\\"723\\\"><strong data-start=\\\"668\\\" data-end=\\\"699\\\">Nepravilan pritisak \\u010detkica<\\\/strong> (prejak ili preslab).<\\\/li>\\n\n\n<li data-start=\\\"724\\\" data-end=\\\"813\\\"><strong data-start=\\\"726\\\" data-end=\\\"775\\\">Lo\\u0161e poravnanje kolektora ili kliznog prstena<\\\/strong> (vibracije i neujedna\\u010deno habanje).<\\\/li>\\n\n\n<li data-start=\\\"814\\\" data-end=\\\"880\\\"><strong data-start=\\\"816\\\" data-end=\\\"841\\\">Prekomerno varni\\u010denje<\\\/strong> (lo\\u0161 kontakt \\u010detkica sa kolektorom).<\\\/li>\\n\n\n<li data-start=\\\"881\\\" data-end=\\\"941\\\"><strong data-start=\\\"883\\\" data-end=\\\"910\\\">Zaga\\u0111enje i prljav\\u0161tina<\\\/strong> (ulje, pra\\u0161ina, oksidacija).<\\\/li>\\n\n\n<li data-start=\\\"942\\\" data-end=\\\"1013\\\"><strong data-start=\\\"944\\\" data-end=\\\"972\\\">Visoka radna temperatura<\\\/strong> (preoptere\\u0107enje ili lo\\u0161a ventilacija).<\\\/li>\\n<\\\/ul>\\n\n\n<h2 data-start=\\\"1015\\\" data-end=\\\"1052\\\">Koraci za re\\u0161avanje problema<\\\/h2>\\n\n\n<h3 data-start=\\\"1054\\\" data-end=\\\"1099\\\">1. Provera i zamena elektro \\u010detkica<\\\/h3>\\n\n\n<p data-start=\\\"1100\\\" data-end=\\\"1560\\\">\\u2714 <strong data-start=\\\"1102\\\" data-end=\\\"1140\\\">Koristiti odgovaraju\\u0107i tip \\u010detkica<\\\/strong> \\u2013 razli\\u010diti kolektori i klizni prstenovi zahtevaju razli\\u010dite vrste \\u010detkica (grafitne, bakro-grafitne, srebrne). Konsultujte tehni\\u010dke specifikacije motora.<br data-start=\\\"1295\\\" data-end=\\\"1298\\\" \\\/>\\u2714 <strong data-start=\\\"1300\\\" data-end=\\\"1330\\\">Pravilna dimenzija \\u010detkica<\\\/strong> \\u2013 ako su prevelike ili premale, dolazi do neujedna\\u010denog habanja i prekomernog zagrevanja.<br data-start=\\\"1420\\\" data-end=\\\"1423\\\" \\\/>\\u2714 <strong data-start=\\\"1425\\\" data-end=\\\"1455\\\">Proveriti pritisak \\u010detkica<\\\/strong> \\u2013 optimalan pritisak treba omogu\\u0107iti dobar kontakt, ali ne sme biti prejak kako bi se smanjilo trenje.<\\\/p>\\n\n\n<h3 data-start=\\\"1562\\\" data-end=\\\"1624\\\">2. Odr\\u017eavanje i \\u010di\\u0161\\u0107enje kolektora i kliznog prstena<\\\/h3>\\n\n\n<p data-start=\\\"1625\\\" data-end=\\\"2093\\\">\\u2714 <strong data-start=\\\"1627\\\" data-end=\\\"1647\\\">Redovno \\u010di\\u0161\\u0107enje<\\\/strong> \\u2013 uklanjanje pra\\u0161ine, ulja i oksidacije pomo\\u0107u specijalnih rastvora ili finih abrazivnih materijala (npr. smirkasti papir vrlo fine granulacije P600-P1000).<br data-start=\\\"1804\\\" data-end=\\\"1807\\\" \\\/>\\u2714 <strong data-start=\\\"1809\\\" data-end=\\\"1832\\\">Poliranje kolektora<\\\/strong> \\u2013 ako je kolektor previ\\u0161e grub, mo\\u017ee pove\\u0107ati potro\\u0161nju \\u010detkica. Poliranje mo\\u017ee pobolj\\u0161ati kontakt i smanjiti habanje.<br data-start=\\\"1951\\\" data-end=\\\"1954\\\" \\\/>\\u2714 <strong data-start=\\\"1956\\\" data-end=\\\"1992\\\">Izbegavanje prekomernog \\u010di\\u0161\\u0107enja<\\\/strong> \\u2013 suvi\\u0161e agresivno \\u010di\\u0161\\u0107enje mo\\u017ee ukloniti za\\u0161titni sloj kolektora i dovesti do jo\\u0161 br\\u017eeg tro\\u0161enja.<\\\/p>\\n\n\n<h3 data-start=\\\"2095\\\" data-end=\\\"2149\\\">3. Provera mehani\\u010dkog poravnanja i vibracija<\\\/h3>\\n\n\n<p data-start=\\\"2150\\\" data-end=\\\"2529\\\">\\u2714 <strong data-start=\\\"2152\\\" data-end=\\\"2185\\\">Proveriti centriranost rotora<\\\/strong> \\u2013 ako kolektor ili klizni prsten nije pravilno postavljen, mo\\u017ee uzrokovati vibracije i neujedna\\u010deno habanje.<br data-start=\\\"2294\\\" data-end=\\\"2297\\\" \\\/>\\u2714 <strong data-start=\\\"2299\\\" data-end=\\\"2322\\\">Balansiranje rotora<\\\/strong> \\u2013 nebalansiran rotor mo\\u017ee dovesti do prekomernog trenja \\u010detkica i varni\\u010denja.<br data-start=\\\"2400\\\" data-end=\\\"2403\\\" \\\/>\\u2714 <strong data-start=\\\"2405\\\" data-end=\\\"2440\\\">Osigurati pravilan rad le\\u017eajeva<\\\/strong> \\u2013 istro\\u0161eni le\\u017eajevi mogu izazvati ekscentri\\u010dno kretanje rotora, \\u0161to pove\\u0107ava habanje.<\\\/p>\\n\n\n<h3 data-start=\\\"2531\\\" data-end=\\\"2578\\\">4. Smanjenje varni\\u010denja i pregrevanja<\\\/h3>\\n\n\n<p data-start=\\\"2579\\\" data-end=\\\"2938\\\">\\u2714 <strong data-start=\\\"2581\\\" data-end=\\\"2617\\\">Proveriti elektri\\u010dnu instalaciju<\\\/strong> \\u2013 lo\\u0161e priklju\\u010dene \\u017eice, visoka struja ili oscilacije napona mogu uzrokovati varni\\u010denje.<br data-start=\\\"2706\\\" data-end=\\\"2709\\\" \\\/>\\u2714 <strong data-start=\\\"2711\\\" data-end=\\\"2760\\\">Koristiti \\u010detkice sa boljim samopodmazivanjem<\\\/strong> \\u2013 ako su kolektor i \\u010detkice suvi\\u0161e suvi, mo\\u017ee do\\u0107i do pregrevanja.<br data-start=\\\"2827\\\" data-end=\\\"2830\\\" \\\/>\\u2714 <strong data-start=\\\"2832\\\" data-end=\\\"2870\\\">Osigurati dobru ventilaciju motora<\\\/strong> \\u2013 pregrevanje mo\\u017ee ubrzati potro\\u0161nju kolektora i kliznog prstena.<\\\/p>\\n\n\n<h3 data-start=\\\"2940\\\" data-end=\\\"2983\\\">5. Pravilna upotreba i odr\\u017eavanje<\\\/h3>\\n\n\n<p data-start=\\\"2984\\\" data-end=\\\"3367\\\">\\u2714 <strong data-start=\\\"2986\\\" data-end=\\\"3022\\\">Izbegavati preoptere\\u0107enje motora<\\\/strong> \\u2013 rad iznad nominalnog optere\\u0107enja pove\\u0107ava potro\\u0161nju \\u010detkica i kolektora.<br data-start=\\\"3097\\\" data-end=\\\"3100\\\" \\\/>\\u2714 <strong data-start=\\\"3102\\\" data-end=\\\"3147\\\">Redovni pregledi i preventivno odr\\u017eavanje<\\\/strong> \\u2013 planirano odr\\u017eavanje smanjuje rizik od iznenadnih kvarova i produ\\u017eava vek trajanja sistema.<br data-start=\\\"3241\\\" data-end=\\\"3244\\\" \\\/>\\u2714 <strong data-start=\\\"3246\\\" data-end=\\\"3287\\\">Upotreba kvalitetnih rezervnih delova<\\\/strong> \\u2013 lo\\u0161 kvalitet \\u010detkica, kolektora ili kliznih prstenova mo\\u017ee ubrzati habanje.<\\\/p>\",\"meta\":\"Ubrzana potro\\u0161nja kolektora i kliznog prstena\",\"title\":\"Re\\u0161enje problema ubrzane potro\\u0161nje kolektora i kliznog prstena\"}},{\"type\":\"grid_item\",\"props\":{\"content\":\"\n\n<p data-start=\\\"70\\\" data-end=\\\"431\\\">Neravnomerna potro\\u0161nja elektro \\u010detkica mo\\u017ee dovesti do lo\\u0161eg kontakta, pregrevanja, varni\\u010denja i skra\\u0107enog veka trajanja elektromotora. Ovaj problem mo\\u017ee biti uzrokovan razli\\u010ditim faktorima, kao \\u0161to su nepravilan pritisak \\u010detkica, o\\u0161te\\u0107en kolektor, vibracije, lo\\u0161e poravnanje ili prljav\\u0161tina u sistemu. U nastavku su klju\\u010dni koraci za re\\u0161avanje ovog problema.<\\\/p>\\n\n\n<h3 data-start=\\\"433\\\" data-end=\\\"484\\\">1. Provera i pode\\u0161avanje pritiska \\u010detkica<\\\/h3>\\n\n\n<p data-start=\\\"485\\\" data-end=\\\"914\\\">\\u2714 <strong data-start=\\\"487\\\" data-end=\\\"551\\\">Nepravilan pritisak \\u010detkica na kolektor ili klizne prstenove<\\\/strong> mo\\u017ee dovesti do neujedna\\u010denog tro\\u0161enja. Ako je pritisak prevelik, \\u010detkice se brzo tro\\u0161e, dok previ\\u0161e labave \\u010detkice mogu izazvati varni\\u010denje.<br data-start=\\\"693\\\" data-end=\\\"696\\\" \\\/>\\u2714 <strong data-start=\\\"698\\\" data-end=\\\"714\\\">Kako re\\u0161iti?<\\\/strong> Podesite opruge tako da pritisak bude u granicama preporu\\u010denih vrednosti proizvo\\u0111a\\u010da. Uobi\\u010dajeno, pritisak treba biti izme\\u0111u <strong data-start=\\\"840\\\" data-end=\\\"869\\\">15 i 25 kPa (kilopaskala)<\\\/strong>, ali ta\\u010dna vrednost zavisi od tipa motora.<\\\/p>\\n\n\n<h3 data-start=\\\"916\\\" data-end=\\\"979\\\">2. Provera i \\u010di\\u0161\\u0107enje kolektora ili kliznih prstenova<\\\/h3>\\n\n\n<p data-start=\\\"980\\\" data-end=\\\"1104\\\">\\u2714 Neravnomerno tro\\u0161enje \\u010detkica mo\\u017ee biti posledica <strong data-start=\\\"1032\\\" data-end=\\\"1080\\\">prljavog, oksidovanog ili neravnog kolektora<\\\/strong>.<br data-start=\\\"1081\\\" data-end=\\\"1084\\\" \\\/>\\u2714 <strong data-start=\\\"1086\\\" data-end=\\\"1102\\\">Kako re\\u0161iti?<\\\/strong><\\\/p>\\n\n\n<ul data-start=\\\"1105\\\" data-end=\\\"1493\\\">\\n\n\n<li data-start=\\\"1105\\\" data-end=\\\"1239\\\">O\\u010distite kolektor specijalnim brusnim papirom fine granulacije (<strong data-start=\\\"1171\\\" data-end=\\\"1197\\\">izme\\u0111u 600 i 1000 grit<\\\/strong>) ili kamen\\u010di\\u0107ima za \\u010di\\u0161\\u0107enje kolektora.<\\\/li>\\n\n\n<li data-start=\\\"1240\\\" data-end=\\\"1360\\\">Uklonite naslage ulja, pra\\u0161ine ili grafita pomo\\u0107u alkohola ili specijalnih sredstava za \\u010di\\u0161\\u0107enje elektro komponenti.<\\\/li>\\n\n\n<li data-start=\\\"1361\\\" data-end=\\\"1493\\\">Ako je kolektor vidno o\\u0161te\\u0107en (duboke ogrebotine, deformacije), potrebno je <strong data-start=\\\"1439\\\" data-end=\\\"1490\\\">precizno struganje (tokarenje) i fino poliranje<\\\/strong>.<\\\/li>\\n<\\\/ul>\\n\n\n<h3 data-start=\\\"1495\\\" data-end=\\\"1548\\\">3. Provera poravnatosti \\u010detkica i kolektora<\\\/h3>\\n\n\n<p data-start=\\\"1549\\\" data-end=\\\"1698\\\">\\u2714 Ako su \\u010detkice nepravilno postavljene ili nisu centrirane, mo\\u017ee do\\u0107i do <strong data-start=\\\"1623\\\" data-end=\\\"1674\\\">neravnomernog kontakta i neujedna\\u010denog tro\\u0161enja<\\\/strong>.<br data-start=\\\"1675\\\" data-end=\\\"1678\\\" \\\/>\\u2714 <strong data-start=\\\"1680\\\" data-end=\\\"1696\\\">Kako re\\u0161iti?<\\\/strong><\\\/p>\\n\n\n<ul data-start=\\\"1699\\\" data-end=\\\"1975\\\">\\n\n\n<li data-start=\\\"1699\\\" data-end=\\\"1759\\\">Proverite da li su le\\u017ei\\u0161ta \\u010detkica ispravno postavljena.<\\\/li>\\n\n\n<li data-start=\\\"1760\\\" data-end=\\\"1847\\\">Ako se \\u010detkice ne pomeraju glatko u svojim nosa\\u010dima, o\\u010distite ili zamenite le\\u017ei\\u0161ta.<\\\/li>\\n\n\n<li data-start=\\\"1848\\\" data-end=\\\"1975\\\">Uverite se da su kolektor i osovina motora <strong data-start=\\\"1893\\\" data-end=\\\"1914\\\">dobro balansirani<\\\/strong>, jer vibracije mogu ubrzati neravnomerno tro\\u0161enje \\u010detkica.<\\\/li>\\n<\\\/ul>\\n\n\n<h3 data-start=\\\"1977\\\" data-end=\\\"2035\\\">4. Zamena neodgovaraju\\u0107ih ili dotrajalih \\u010detkica<\\\/h3>\\n\n\n<p data-start=\\\"2036\\\" data-end=\\\"2119\\\">\\u2714 Pogre\\u0161an tip \\u010detkica mo\\u017ee uzrokovati neravnomerno habanje.<br data-start=\\\"2096\\\" data-end=\\\"2099\\\" \\\/>\\u2714 <strong data-start=\\\"2101\\\" data-end=\\\"2117\\\">Kako re\\u0161iti?<\\\/strong><\\\/p>\\n\n\n<ul data-start=\\\"2120\\\" data-end=\\\"2438\\\">\\n\n\n<li data-start=\\\"2120\\\" data-end=\\\"2226\\\">Koristite \\u010detkice koje odgovaraju originalnim specifikacijama motora (materijal, dimenzije i tvrdo\\u0107a).<\\\/li>\\n\n\n<li data-start=\\\"2227\\\" data-end=\\\"2326\\\">U slu\\u010daju ekstremnog tro\\u0161enja, zamenite \\u010detkice novima i pravilno ih oblikujte prema kolektoru.<\\\/li>\\n\n\n<li data-start=\\\"2327\\\" data-end=\\\"2438\\\">Prilikom zamene, uverite se da sve \\u010detkice u motoru imaju <strong data-start=\\\"2387\\\" data-end=\\\"2404\\\">sli\\u010dnu du\\u017einu<\\\/strong> kako bi pritisak bio ujedna\\u010den.<\\\/li>\\n<\\\/ul>\\n\n\n<h3 data-start=\\\"2440\\\" data-end=\\\"2516\\\">5. Provera elektri\\u010dnih problema (strujna optere\\u0107enja i varni\\u010denje)<\\\/h3>\\n\n\n<p data-start=\\\"2517\\\" data-end=\\\"2623\\\">\\u2714 Prekomerno varni\\u010denje mo\\u017ee izazvati poja\\u010dano habanje i o\\u0161te\\u0107enje elektro \\u010detkica.<br data-start=\\\"2600\\\" data-end=\\\"2603\\\" \\\/>\\u2714 <strong data-start=\\\"2605\\\" data-end=\\\"2621\\\">Kako re\\u0161iti?<\\\/strong><\\\/p>\\n\n\n<ul data-start=\\\"2624\\\" data-end=\\\"2917\\\">\\n\n\n<li data-start=\\\"2624\\\" data-end=\\\"2711\\\">Proverite da li motor radi unutar <strong data-start=\\\"2660\\\" data-end=\\\"2708\\\">predvi\\u0111enih naponskih i strujnih optere\\u0107enja<\\\/strong>.<\\\/li>\\n\n\n<li data-start=\\\"2712\\\" data-end=\\\"2820\\\">Pregledajte elektri\\u010dne spojeve i eliminisanje lo\\u0161ih kontakata koji mogu izazvati nestabilan rad \\u010detkica.<\\\/li>\\n\n\n<li data-start=\\\"2821\\\" data-end=\\\"2917\\\">Ugradite <strong data-start=\\\"2832\\\" data-end=\\\"2880\\\">ispravne prigu\\u0161ne elemente (npr. RC filtere)<\\\/strong> ako postoji prekomerno varni\\u010denje.<\\\/li>\\n<\\\/ul>\\n\n\n<h3 data-start=\\\"2919\\\" data-end=\\\"2985\\\">6. Pravilno balansiranje rotora i eliminisanje vibracija<\\\/h3>\\n\n\n<p data-start=\\\"2986\\\" data-end=\\\"3095\\\">\\u2714 Ako rotor nije dobro balansiran, dolazi do vibracija koje ubrzavaju habanje \\u010detkica.<br data-start=\\\"3072\\\" data-end=\\\"3075\\\" \\\/>\\u2714 <strong data-start=\\\"3077\\\" data-end=\\\"3093\\\">Kako re\\u0161iti?<\\\/strong><\\\/p>\\n\n\n<ul data-start=\\\"3096\\\" data-end=\\\"3333\\\">\\n\n\n<li data-start=\\\"3096\\\" data-end=\\\"3195\\\">Proverite balansiranje rotora i po potrebi izvr\\u0161ite precizno pode\\u0161avanje u servisnoj radionici.<\\\/li>\\n\n\n<li data-start=\\\"3196\\\" data-end=\\\"3333\\\">Uverite se da le\\u017eajevi motora nisu istro\\u0161eni, jer istro\\u0161eni le\\u017eajevi mogu uzrokovati pomeranje rotora i neravnomerno habanje \\u010detkica.<\\\/li>\\n<\\\/ul>\",\"meta\":\" Problemi u eksploataciji i njihovo otklanjanje\",\"title\":\"Kako re\\u0161iti probelm neravnomerne potro\\u0161nje elektro \\u010detkica?\"}}]}]}]}]}],\"version\":\"4.5.6\"} --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Problemi u eksploataciji i njihovo otklanjanje Kako otkloniti jako varni\u010denje elektro \u010detkica? Problemi u eksploataciji i njihovo otklanjanje Jako varni\u010denje elektro \u010detkica mo\u017ee ukazivati na ozbiljne probleme u radu elektromotora. Ako se ne otkloni na vreme, mo\u017ee dovesti do pregrevanja, pove\u0107anog habanja kolektora i \u010detkica, pa \u010dak i do o\u0161te\u0107enja motora. Postoji vi\u0161e uzroka varni\u010denja, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2811,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-75","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-baza-znanje"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Problemi u eksploataciji i njihovo otklanjanje - Metalika Z<\/title>\n<meta name=\"description\" content=\"Problemi u eksploataciji i njihovo otklanjanje\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.metalika-volf.com\/en\/problemi-u-eksploataciji-i-njihovo-otklanjanje\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Problemi u eksploataciji i njihovo otklanjanje - 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