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)3%阻抗(kang)(kang)(kang)線(xian)(xian)(xian)(xian)電抗(kang)(kang)(kang)器(qi)來降低電容器(qi)開關，線(xian)(xian)(xian)(xian)路陷波，直流總線(xian)(xian)(xian)(xian)過壓(ya)(ya)跳閘以及逆變(bian)器(qi)過流和過壓(ya)(ya)條件引起的(de)(de)(de)電源(yuan)線(xian)(xian)(xian)(xian)瞬態(tai)電壓(ya)(ya)。線(xian)(xian)(xian)(xian)路電抗(kang)(kang)(kang)器(qi)可真正的(de)(de)(de)輸(shu)入(ru)(ru)功(gong)率(lv)因(yin)數并減少(shao)驅動(dong)(dong)(dong)器(qi)之間的(de)(de)(de)串(chuan)擾。輸(shu)入(ru)(ru)線(xian)(xian)(xian)(xian)路電抗(kang)(kang)(kang)器(qi)在短(duan)路條件下為驅動(dong)(dong)(dong)器(qi)提(ti)供(gong)一些保護(hu)。如果電源(yuan)變(bian)壓(ya)(ya)器(qi)kV-A額(e)(e)定值(zhi)(zhi)大(da)于(yu)驅動(dong)(dong)(dong)器(qi)kV-A額(e)(e)定值(zhi)(zhi)的(de)(de)(de)10倍，則(ze)建議使用(yong)線(xian)(xian)(xian)(xian)路電抗(kang)(kang)(kang)器(qi)，以便在電源(yuan)變(bian)壓(ya)(ya)器(qi)短(duan)路時盡量減少(shao)對驅動(dong)(dong)(dong)器(qi)的(de)(de)(de)損壞。此線(xian)(xian)(xian)(xian)路阻抗(kang)(kang)(kang)取決于(yu)驅動(dong)(dong)(dong)器(qi)的(de)(de)(de)短(duan)路額(e)(e)定值(zhi)(zhi)以及供(gong)電配電變(bian)壓(ya)(ya)器(qi)。具體而言，線(xian)(xian)(xian)(xian)路阻抗(kang)(kang)(kang)須(xu)大(da)于(yu)或等于(yu)電源(yuan)變(bian)壓(ya)(ya)器(qi)額(e)(e)定值(zhi)(zhi)與(yu)驅動(dong)(dong)(dong)器(qi)的(de)(de)(de)比(bi)率(lv)

　　請使用單獨的(de)導管進行輸入電(dian)源(yuan)，輸出電(dian)源(yuan)和(he)控制(zhi)接線(xian)。更具(ju)體地說，在連接VFD的(de)電(dian)源(yuan)和(he)控制(zhi)線(xian)路時(shi)，應(ying)遵循以下準(zhun)則(ze)：

　　將輸入交流電(dian)源線安裝在自己(ji)的剛性(xing)鋼管中。

　　將(jiang)輸出電機接線安裝(zhuang)在自己的剛性鋼(gang)管中。

　　將(jiang)控制(zhi)線(xian)(xian)(xian)安(an)裝(zhuang)在自己的剛性(xing)鋼管中。低壓直流(liu)控制(zhi)線(xian)(xian)(xian)和120 Vac控制(zhi)線(xian)(xian)(xian)應位于(yu)不同(tong)的導(dao)管中。當(dang)連接到VFD的控制(zhi)板時，雙絞線(xian)(xian)(xian)和屏蔽(bi)線(xian)(xian)(xian)都足夠(gou)了。建議使用兩線(xian)(xian)(xian)和三線(xian)(xian)(xian)連接。對于(yu)許多驅動器，z小(xiao)導(dao)線(xian)(xian)(xian)尺寸為(wei)18 AWG。

　　確(que)保(bao)所(suo)有接(jie)(jie)地(di)(di)連接(jie)(jie)牢固且(qie)正(zheng)確(que)接(jie)(jie)地(di)(di)。屏蔽(bi)層(ceng)應僅(jin)在(zai)(zai)電(dian)纜的一端接(jie)(jie)地(di)(di)，以避免接(jie)(jie)地(di)(di)回路。在(zai)(zai)VFD端連接(jie)(jie)屏蔽(bi)層(ceng)時，將其連接(jie)(jie)到(dao)機箱接(jie)(jie)地(di)(di)線耳。注意：在(zai)(zai)將屏蔽(bi)連接(jie)(jie)到(dao)VFD的接(jie)(jie)地(di)(di)片之(zhi)前，請(qing)務必斷開VFD的電(dian)源。

　　從電(dian)源(yuan)線(xian)分開控制(zhi)和反饋接(jie)線(xian)至少(shao)12英寸。注意事項：在具有(you)多(duo)個(ge)VFD的(de)安裝中(zhong)(zhong)(zhong)，所有(you)VFD的(de)輸(shu)(shu)入電(dian)源(yuan)線(xian)可(ke)以(yi)(yi)在同一個(ge)管道(dao)中(zhong)(zhong)(zhong)，控制(zhi)線(xian)可(ke)以(yi)(yi)在同一個(ge)管道(dao)中(zhong)(zhong)(zhong)，但每個(ge)電(dian)機(ji)的(de)輸(shu)(shu)出接(jie)線(xian)須位(wei)于(yu)單獨(du)的(de)管道(dao)中(zhong)(zhong)(zhong)。唯(wei) 一的(de)例外(wai)是如果一個(ge)VFD用于(yu)操作多(duo)個(ge)電(dian)機(ji)，則所有(you)電(dian)機(ji)的(de)輸(shu)(shu)出接(jie)線(xian)可(ke)以(yi)(yi)在同一個(ge)導(dao)管中(zhong)(zhong)(zhong)。

　　在接地(di)系統上(shang)使(shi)(shi)用(yong)該驅動器(qi)。切勿使(shi)(shi)用(yong)浮動地(di)面。某些制造商不建議在任何子微(wei)型(xing)或更新設(she)計的驅動器(qi)上(shang)使(shi)(shi)用(yong)浮動輸入。如(ru)果線(xian)路上(shang)沒有干擾(rao)，驅動器(qi)應該運行良好 - 但嚴重(zhong)的共(gong)模噪(zao)聲可能導(dao)致誤跳(tiao)閘或更糟。

　　注意：某(mou)些傳統VFD在直流總線和地(di)之間使用一(yi)串(chuan)電阻，這意味著共模噪聲(sheng)不是(shi)(shi)問(wen)題。一(yi)些積分-hp驅(qu)動(dong)(dong)器(qi)也使用電阻串(chuan)，因此使用這些浮(fu)動(dong)(dong)接地(di)可(ke)能沒問(wen)題。但是(shi)(shi)，不建議將(jiang)浮(fu)點系統用于較(jiao)新(xin)的驅(qu)動(dong)(dong)器(qi)技(ji)術。