交流變頻電源上電之前需要做什么準備工作
變(bian)(bian)頻電(dian)(dian)源(yuan)上電(dian)(dian)之(zhi)前首要應該先查看(kan)周圍環(huan)境的(de)(de)溫(wen)度及(ji)濕(shi)度，溫(wen)度過(guo)高會(hui)導(dao)致變(bian)(bian)頻電(dian)(dian)源(yuan)過(guo)熱報警(jing)，嚴重的(de)(de)會(hui)直(zhi)接導(dao)致變(bian)(bian)頻電(dian)(dian)源(yuan)功(gong)率器(qi)材(cai)損壞、電(dian)(dian)路(lu)短路(lu)；空氣過(guo)于潮濕(shi)會(hui)導(dao)致變(bian)(bian)頻電(dian)(dian)源(yuan)內部(bu)直(zhi)接短路(lu)。
在變(bian)頻(pin)電(dian)(dian)源運轉(zhuan)(zhuan)時尤(you)其要注意其冷卻(que)體系(xi)是(shi)(shi)否正常，如：風道(dao)排風是(shi)(shi)否流通，風機是(shi)(shi)否有反(fan)常聲響。一(yi)般防護等級比較高的(de)(de)變(bian)頻(pin)電(dian)(dian)源如：IP20以(yi)上(shang)的(de)(de)變(bian)頻(pin)電(dian)(dian)源可直(zhi)接(jie)打開安(an)裝(zhuang)，IP20以(yi)下(xia)的(de)(de)變(bian)頻(pin)電(dian)(dian)源一(yi)般應是(shi)(shi)柜(ju)(ju)式安(an)裝(zhuang)，所以(yi)變(bian)頻(pin)柜(ju)(ju)散熱(re)效果如何將(jiang)直(zhi)接(jie)影響變(bian)頻(pin)電(dian)(dian)源的(de)(de)正常運轉(zhuan)(zhuan)，變(bian)頻(pin)電(dian)(dian)源的(de)(de)排風體系(xi)如風扇旋轉(zhuan)(zhuan)是(shi)(shi)否流通，進風口是(shi)(shi)否有塵埃及(ji)阻(zu)塞物(wu)都是(shi)(shi)我(wo)們(men)日常查看不可疏忽的(de)(de)地方。
電(dian)(dian)(dian)動機電(dian)(dian)(dian)抗器、變頻(pin)電(dian)(dian)(dian)源等是(shi)否過熱，有異味；變頻(pin)電(dian)(dian)(dian)源及(ji)馬達是(shi)否有反常響聲；變頻(pin)電(dian)(dian)(dian)源面(mian)板電(dian)(dian)(dian)流顯現是(shi)否偏大(da)或電(dian)(dian)(dian)流變化幅(fu)度太大(da)，輸出UVW三相電(dian)(dian)(dian)壓與(yu)電(dian)(dian)(dian)流是(shi)否平(ping)衡等都是(shi)日常需要查(cha)看的事項(xiang)。
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