型號
:株洲2098-DSD-HV030 AB伺服驅(qū)動器 羅克韋爾直銷
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV220X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV220-SE
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV150
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV100-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV050X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV050X
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV050-SE
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV030X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV030X
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV030-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-HV030
Allen Bradley 伺服驅(qū)動器 2098-DSD-150-SE
Allen Bradley 伺服驅(qū)動器 2098-DSD-075X
Allen Bradley 伺服驅(qū)動器 2098-DSD-075-SE
Allen Bradley 伺服驅(qū)動器 2098-DSD-075
Allen Bradley 伺服驅(qū)動器 2098-DSD-030X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-030X
Allen Bradley 伺服驅(qū)動器 2098-DSD-030-SE
Allen Bradley 伺服驅(qū)動器 2098-DSD-030
Allen Bradley 伺服驅(qū)動器 2098-DSD-020X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-020-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-020
Allen Bradley 伺服驅(qū)動器 2098-DSD-010X
Allen Bradley 伺服驅(qū)動器 2098-DSD-010
Allen Bradley 伺服驅(qū)動器 2098-DSD-005X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-005X
Allen Bradley 伺服驅(qū)動器 2098-DSD-005-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-005
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-010X-DN
Allen Bradley 伺服驅(qū)動器 2098-DSD-020X
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-HV150-SE
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-HV100-SE
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-005-SE
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-HV030-SE
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-020-SE
ALLEN BRADLEY 伺服驅(qū)動器 2098-DSD-010-SE
:株洲2098-DSD-HV030 AB伺服驅(qū)動器 羅克韋爾直銷作為電工,我們對“接地”這個詞兒很熟悉,但還有一個“重復(fù)接地”,那么什么是重復(fù)接地呢?重復(fù)接地又有什么好處呢?如下:中的RS就是重復(fù)接地。定義:在中性點直接接地系統(tǒng)中,除了工作接地以外,其他點的再次接地。圖A中RN為工作接地,RS為重復(fù)接地。主要作用:避免零線斷開或接觸不良時的危害性。如中,沒有重復(fù)接地,當(dāng)零線斷開時,如果設(shè)備漏電,金屬外殼帶電,人觸及金屬外殼,人體大地和工作接地構(gòu)成回路,就會觸電。
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