為了便於電氣二次回路的施工與日常維護，根據“四統一”的原則，對電纜和電纜所用芯進行編號，編號應該做到使用者能根據編號了解回路用途，能正確接線。
電氣二次回路編號應根據等電位的原則進行，就是電氣回路中遇於一點的導線都用同一個數碼表示，當回路經過接點或者開關等隔離後，因為隔離點兩端已不是等電位，所以應給予不同的編號，下面將具體的解釋些常用電纜和電纜所用芯編號。
倍德立（廈門）科技有限公司
銷售經理:張衛東 聯係電話：13055237500 座機：0592-6085900 QQ:3454941352
銷售經理：楊帆 聯係電話：13358371730 座機：0592-6085900 QQ: 2921696645
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優勢品牌：
Siemens（西門子）:
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AB（羅克韋爾）:1734/1746/ 1747/ 1756/1762係列， 承接AB羅克韋爾全係列PLC 變頻器、觸摸屏、軟啟動、伺服等業務.
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