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3%阻抗線(xian)(xian)電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)來降低(di)電(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)(qi)(qi)開關，線(xian)(xian)路(lu)(lu)陷波，直流總線(xian)(xian)過(guo)壓(ya)(ya)(ya)跳(tiao)閘以(yi)及逆變(bian)(bian)(bian)器(qi)(qi)(qi)(qi)過(guo)流和(he)過(guo)壓(ya)(ya)(ya)條件(jian)引起的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)線(xian)(xian)瞬態(tai)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。線(xian)(xian)路(lu)(lu)電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)可(ke)gai善真正的(de)(de)輸(shu)入(ru)功率(lv)因數并減少驅(qu)(qu)動器(qi)(qi)(qi)(qi)之間的(de)(de)串擾(rao)。輸(shu)入(ru)線(xian)(xian)路(lu)(lu)電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)在短路(lu)(lu)條件(jian)下為驅(qu)(qu)動器(qi)(qi)(qi)(qi)提供一(yi)些(xie)保護。如果(guo)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)防(fang)爆(bao)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)kV-A額(e)定值(zhi)大(da)于(yu)驅(qu)(qu)動器(qi)(qi)(qi)(qi)kV-A額(e)定值(zhi)的(de)(de)10倍，則(ze)建議使用線(xian)(xian)路(lu)(lu)電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)，以(yi)便在電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)短路(lu)(lu)時盡量減少對驅(qu)(qu)動器(qi)(qi)(qi)(qi)的(de)(de)損壞。此線(xian)(xian)路(lu)(lu)阻抗取決于(yu)驅(qu)(qu)動器(qi)(qi)(qi)(qi)的(de)(de)短路(lu)(lu)額(e)定值(zhi)以(yi)及供電(dian)(dian)(dian)(dian)配電(dian)(dian)(dian)(dian)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)。具(ju)體(ti)而言，線(xian)(xian)路(lu)(lu)阻抗須大(da)于(yu)或等(deng)于(yu)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)防(fang)爆(bao)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)額(e)定值(zhi)與驅(qu)(qu)動器(qi)(qi)(qi)(qi)的(de)(de)比率(lv)

　　請使用單獨(du)的(de)(de)導管進行(xing)輸(shu)入電源(yuan)，輸(shu)出電源(yuan)和控(kong)制接線(xian)。更具體(ti)地(di)說，在連接VFD的(de)(de)電源(yuan)和控(kong)制線(xian)路時(shi)，應遵循以下準則：

　　將輸入(ru)交流電源線(xian)安(an)裝在(zai)自己的剛性鋼管(guan)中。

　　將輸出電機接(jie)線安(an)裝在自(zi)己的剛性鋼管中。

　　將控(kong)制(zhi)線(xian)(xian)安裝在自己的剛性鋼(gang)管中。低壓直流控(kong)制(zhi)線(xian)(xian)和(he)(he)120 Vac控(kong)制(zhi)線(xian)(xian)應位于不同的導管中。當連接到VFD的控(kong)制(zhi)板時，雙絞(jiao)線(xian)(xian)和(he)(he)屏蔽線(xian)(xian)都(dou)足夠了。建議使用(yong)兩線(xian)(xian)和(he)(he)三線(xian)(xian)連接。對于許多驅動(dong)器，小導線(xian)(xian)尺寸(cun)為18 AWG。

　　確保所有接(jie)(jie)(jie)地(di)連(lian)接(jie)(jie)(jie)牢固(gu)且正(zheng)確接(jie)(jie)(jie)地(di)。屏(ping)蔽層(ceng)應(ying)僅在(zai)電纜(lan)的(de)一端接(jie)(jie)(jie)地(di)，以(yi)避免接(jie)(jie)(jie)地(di)回路。在(zai)VFD端連(lian)接(jie)(jie)(jie)屏(ping)蔽層(ceng)時，將其連(lian)接(jie)(jie)(jie)到(dao)機(ji)箱接(jie)(jie)(jie)地(di)線耳。注(zhu)意：在(zai)將屏(ping)蔽連(lian)接(jie)(jie)(jie)到(dao)VFD的(de)接(jie)(jie)(jie)地(di)片(pian)之前，請務(wu)必斷開VFD的(de)電源。

　　從電源線(xian)(xian)分開控(kong)制(zhi)和反(fan)饋接(jie)(jie)線(xian)(xian)至少12英寸。注意事項(xiang)：在具有多個(ge)(ge)VFD的(de)安(an)裝中(zhong)，所有VFD的(de)輸入電源線(xian)(xian)可以在同(tong)一(yi)個(ge)(ge)管道中(zhong)，控(kong)制(zhi)線(xian)(xian)可以在同(tong)一(yi)個(ge)(ge)管道中(zhong)，但每個(ge)(ge)電機的(de)輸出接(jie)(jie)線(xian)(xian)須位(wei)于單獨(du)的(de)管道中(zhong)。唯 一(yi)的(de)例(li)外是如果一(yi)個(ge)(ge)VFD用于操(cao)作多個(ge)(ge)電機，則所有電機的(de)輸出接(jie)(jie)線(xian)(xian)可以在同(tong)一(yi)個(ge)(ge)導管中(zhong)。

　　在接地(di)系統上(shang)使(shi)用該(gai)驅動器(qi)。切勿(wu)使(shi)用浮動地(di)面(mian)。某些制造商不建議在任何子微型或更(geng)新設計的(de)驅動器(qi)上(shang)使(shi)用浮動輸(shu)入(ru)。如果線路上(shang)沒有干擾，驅動器(qi)應該(gai)運行良好 - 但嚴重的(de)共模噪聲可能導致誤跳(tiao)閘或更(geng)糟。

　　注(zhu)意：某些傳統VFD在直流總線(xian)和地之(zhi)間使用(yong)(yong)一串(chuan)電阻，這(zhe)(zhe)意味著共模噪聲不(bu)是(shi)問題。一些積分(fen)-hp驅動器(qi)也(ye)使用(yong)(yong)電阻串(chuan)，因此使用(yong)(yong)這(zhe)(zhe)些浮動接地可能沒問題。但(dan)是(shi)，不(bu)建議將浮點系統用(yong)(yong)于(yu)較新的驅動器(qi)技術。