變頻器實用的安裝提示注意事項是什么?看完你就知道了

　　當線路電源 過驅動器kV-A額定值的10倍時，請添加線路電抗器。

　　應使(shi)用(yong)3%阻抗(kang)(kang)(kang)線(xian)(xian)(xian)(xian)電(dian)抗(kang)(kang)(kang)器(qi)(qi)(qi)來降(jiang)低電(dian)容(rong)器(qi)(qi)(qi)開關，線(xian)(xian)(xian)(xian)路(lu)(lu)陷(xian)波(bo)，直流(liu)總(zong)線(xian)(xian)(xian)(xian)過(guo)壓(ya)(ya)(ya)跳閘以(yi)及(ji)(ji)逆變(bian)(bian)器(qi)(qi)(qi)過(guo)流(liu)和過(guo)壓(ya)(ya)(ya)條(tiao)件(jian)引起(qi)的(de)電(dian)源線(xian)(xian)(xian)(xian)瞬態電(dian)壓(ya)(ya)(ya)。線(xian)(xian)(xian)(xian)路(lu)(lu)電(dian)抗(kang)(kang)(kang)器(qi)(qi)(qi)可真正的(de)輸入功率(lv)因(yin)數并減少驅(qu)(qu)動(dong)器(qi)(qi)(qi)之間(jian)的(de)串擾。輸入線(xian)(xian)(xian)(xian)路(lu)(lu)電(dian)抗(kang)(kang)(kang)器(qi)(qi)(qi)在(zai)(zai)短路(lu)(lu)條(tiao)件(jian)下(xia)為驅(qu)(qu)動(dong)器(qi)(qi)(qi)提(ti)供(gong)一些保(bao)護。如果(guo)電(dian)源變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)kV-A額定值(zhi)(zhi)(zhi)大于驅(qu)(qu)動(dong)器(qi)(qi)(qi)kV-A額定值(zhi)(zhi)(zhi)的(de)10倍，則建(jian)議(yi)使(shi)用(yong)線(xian)(xian)(xian)(xian)路(lu)(lu)電(dian)抗(kang)(kang)(kang)器(qi)(qi)(qi)，以(yi)便在(zai)(zai)電(dian)源變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)短路(lu)(lu)時盡量減少對驅(qu)(qu)動(dong)器(qi)(qi)(qi)的(de)損壞。此線(xian)(xian)(xian)(xian)路(lu)(lu)阻抗(kang)(kang)(kang)取決(jue)于驅(qu)(qu)動(dong)器(qi)(qi)(qi)的(de)短路(lu)(lu)額定值(zhi)(zhi)(zhi)以(yi)及(ji)(ji)供(gong)電(dian)配電(dian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)。具體而言，線(xian)(xian)(xian)(xian)路(lu)(lu)阻抗(kang)(kang)(kang)須大于或等于電(dian)源變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)額定值(zhi)(zhi)(zhi)與(yu)驅(qu)(qu)動(dong)器(qi)(qi)(qi)的(de)比率(lv)

　　請使用單獨的導管(guan)進行輸(shu)入(ru)電源，輸(shu)出(chu)電源和控(kong)制接(jie)線。更(geng)具(ju)體地說，在(zai)連接(jie)VFD的電源和控(kong)制線路時，應遵循以下準則：

　　將輸(shu)入交流電源線安裝在(zai)自(zi)己的剛性鋼管(guan)中。

　　將輸出電機(ji)接線安裝在自己的剛性鋼管中。

　　將控制線(xian)(xian)(xian)安裝在自己的剛性鋼管(guan)中。低壓直流(liu)控制線(xian)(xian)(xian)和(he)(he)120 Vac控制線(xian)(xian)(xian)應位于不同的導(dao)管(guan)中。當連接(jie)到VFD的控制板(ban)時，雙絞線(xian)(xian)(xian)和(he)(he)屏蔽線(xian)(xian)(xian)都足夠了。建議使用兩(liang)線(xian)(xian)(xian)和(he)(he)三線(xian)(xian)(xian)連接(jie)。對于許(xu)多驅動器，z小導(dao)線(xian)(xian)(xian)尺(chi)寸為18 AWG。

　　確保所有接(jie)地(di)(di)(di)連接(jie)牢固且正確接(jie)地(di)(di)(di)。屏(ping)蔽層(ceng)應(ying)僅(jin)在(zai)電纜的一(yi)端(duan)接(jie)地(di)(di)(di)，以(yi)避免(mian)接(jie)地(di)(di)(di)回路(lu)。在(zai)VFD端(duan)連接(jie)屏(ping)蔽層(ceng)時(shi)，將(jiang)其連接(jie)到機箱接(jie)地(di)(di)(di)線耳。注意：在(zai)將(jiang)屏(ping)蔽連接(jie)到VFD的接(jie)地(di)(di)(di)片之(zhi)前，請務必斷開VFD的電源。

　　從(cong)電源線(xian)(xian)(xian)分(fen)開控(kong)制(zhi)和反饋接(jie)線(xian)(xian)(xian)至少(shao)12英寸。注意事項(xiang)：在具有多個(ge)VFD的(de)(de)安裝中，所(suo)有VFD的(de)(de)輸入電源線(xian)(xian)(xian)可(ke)以在同(tong)一(yi)(yi)個(ge)管(guan)(guan)道(dao)(dao)中，控(kong)制(zhi)線(xian)(xian)(xian)可(ke)以在同(tong)一(yi)(yi)個(ge)管(guan)(guan)道(dao)(dao)中，但每個(ge)電機的(de)(de)輸出接(jie)線(xian)(xian)(xian)須位于單獨的(de)(de)管(guan)(guan)道(dao)(dao)中。唯 一(yi)(yi)的(de)(de)例外是如果(guo)一(yi)(yi)個(ge)VFD用(yong)于操作多個(ge)電機，則所(suo)有電機的(de)(de)輸出接(jie)線(xian)(xian)(xian)可(ke)以在同(tong)一(yi)(yi)個(ge)導管(guan)(guan)中。

　　在接地(di)系統(tong)上使用(yong)該(gai)驅(qu)動器。切勿使用(yong)浮動地(di)面。某些制造(zao)商不建議在任(ren)何子微(wei)型或更新設計(ji)的驅(qu)動器上使用(yong)浮動輸入。如果線(xian)路(lu)上沒有干擾(rao)，驅(qu)動器應該(gai)運行良(liang)好 - 但嚴重的共模噪(zao)聲可(ke)能導致(zhi)誤跳閘或更糟(zao)。

　　注(zhu)意：某(mou)些傳統VFD在直流總線和地之間使用一串(chuan)電(dian)阻(zu)，這意味著(zhu)共模噪聲不是問題。一些積分-hp驅動(dong)(dong)器也使用電(dian)阻(zu)串(chuan)，因此使用這些浮動(dong)(dong)接地可能沒問題。但(dan)是，不建議將浮點(dian)系統用于較新的驅動(dong)(dong)器技術。

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