當線路電源超過驅動器kV-A額定值的10倍時，請添加線路電抗器。

　　應使用(yong)(yong)3%阻抗線(xian)(xian)(xian)(xian)電(dian)抗器(qi)(qi)(qi)(qi)(qi)來降低電(dian)容(rong)器(qi)(qi)(qi)(qi)(qi)開(kai)關，線(xian)(xian)(xian)(xian)路陷(xian)波(bo)，直(zhi)流(liu)(liu)總線(xian)(xian)(xian)(xian)過壓(ya)(ya)跳閘以(yi)及逆變(bian)(bian)器(qi)(qi)(qi)(qi)(qi)過流(liu)(liu)和過壓(ya)(ya)條件(jian)引起的(de)電(dian)源(yuan)線(xian)(xian)(xian)(xian)瞬(shun)態電(dian)壓(ya)(ya)。線(xian)(xian)(xian)(xian)路電(dian)抗器(qi)(qi)(qi)(qi)(qi)可(ke)真正的(de)輸(shu)入(ru)功(gong)率因數并(bing)減少驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)之間(jian)的(de)串擾。輸(shu)入(ru)線(xian)(xian)(xian)(xian)路電(dian)抗器(qi)(qi)(qi)(qi)(qi)在短路條件(jian)下為驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)提供一些保護。如果電(dian)源(yuan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)kV-A額定(ding)(ding)值(zhi)大(da)(da)于驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)kV-A額定(ding)(ding)值(zhi)的(de)10倍，則建議(yi)使用(yong)(yong)線(xian)(xian)(xian)(xian)路電(dian)抗器(qi)(qi)(qi)(qi)(qi)，以(yi)便在電(dian)源(yuan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)短路時(shi)盡量減少對驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)的(de)損壞。此線(xian)(xian)(xian)(xian)路阻抗取決于驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)的(de)短路額定(ding)(ding)值(zhi)以(yi)及供電(dian)配電(dian)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)。具體(ti)而言(yan)，線(xian)(xian)(xian)(xian)路阻抗須大(da)(da)于或(huo)等于電(dian)源(yuan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)額定(ding)(ding)值(zhi)與(yu)驅動(dong)(dong)器(qi)(qi)(qi)(qi)(qi)的(de)比率

　　請使(shi)用單(dan)獨(du)的(de)導管進行輸入(ru)電(dian)(dian)源，輸出(chu)電(dian)(dian)源和控制接線。更具體地說，在連接VFD的(de)電(dian)(dian)源和控制線路時，應遵循以下準(zhun)則(ze)：

　　將輸入交流電源(yuan)線安裝在自己的剛性(xing)鋼管(guan)中(zhong)。

　　將輸出電機(ji)接線(xian)安(an)裝在(zai)自己的剛性鋼管(guan)中。

　　將控(kong)(kong)制線(xian)(xian)(xian)安裝在自己的(de)(de)剛(gang)性鋼管中。低壓(ya)直流控(kong)(kong)制線(xian)(xian)(xian)和(he)120 Vac控(kong)(kong)制線(xian)(xian)(xian)應位(wei)于不同的(de)(de)導管中。當連接到VFD的(de)(de)控(kong)(kong)制板(ban)時，雙絞(jiao)線(xian)(xian)(xian)和(he)屏蔽線(xian)(xian)(xian)都足夠了。建議(yi)使用(yong)兩(liang)線(xian)(xian)(xian)和(he)三線(xian)(xian)(xian)連接。對于許多驅動器(qi)，z小導線(xian)(xian)(xian)尺寸為18 AWG。

　　確(que)(que)保所(suo)有接地(di)(di)連接牢固且正確(que)(que)接地(di)(di)。屏(ping)蔽(bi)層(ceng)應僅在電纜的(de)(de)(de)一端接地(di)(di)，以避免接地(di)(di)回路。在VFD端連接屏(ping)蔽(bi)層(ceng)時，將(jiang)其連接到機箱接地(di)(di)線耳。注意：在將(jiang)屏(ping)蔽(bi)連接到VFD的(de)(de)(de)接地(di)(di)片(pian)之前，請務必(bi)斷開VFD的(de)(de)(de)電源(yuan)。

　　從電(dian)(dian)(dian)源線分開控制和(he)反饋(kui)接線至少12英寸。注意(yi)事項：在具(ju)有(you)多個VFD的(de)(de)安裝中(zhong)(zhong)，所有(you)VFD的(de)(de)輸入電(dian)(dian)(dian)源線可以在同一(yi)個管(guan)道(dao)中(zhong)(zhong)，控制線可以在同一(yi)個管(guan)道(dao)中(zhong)(zhong)，但每個電(dian)(dian)(dian)機的(de)(de)輸出接線須位于單獨的(de)(de)管(guan)道(dao)中(zhong)(zhong)。唯 一(yi)的(de)(de)例外是如果(guo)一(yi)個VFD用于操作多個電(dian)(dian)(dian)機，則(ze)所有(you)電(dian)(dian)(dian)機的(de)(de)輸出接線可以在同一(yi)個導管(guan)中(zhong)(zhong)。

　　在接地(di)系統上(shang)使(shi)用該驅動(dong)器(qi)。切勿使(shi)用浮(fu)動(dong)地(di)面。某些(xie)制造商不建議(yi)在任(ren)何子微型或(huo)更新設計的驅動(dong)器(qi)上(shang)使(shi)用浮(fu)動(dong)輸入。如果線路(lu)上(shang)沒有干擾，驅動(dong)器(qi)應該運行良好(hao) - 但嚴重(zhong)的共模噪(zao)聲可能導致誤跳閘或(huo)更糟。

　　注意：某些傳(chuan)統(tong)VFD在直(zhi)流總線和地(di)之間使(shi)用(yong)一(yi)串電(dian)阻，這意味著共模(mo)噪聲不(bu)是問(wen)題。一(yi)些積分-hp驅動(dong)器(qi)也使(shi)用(yong)電(dian)阻串，因此使(shi)用(yong)這些浮動(dong)接地(di)可能(neng)沒(mei)問(wen)題。但(dan)是，不(bu)建議將浮點系統(tong)用(yong)于較新的驅動(dong)器(qi)技術。