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合理使用直流（DC）隔离/交流（AC）耦合装置能使许多构件的阴极保护大大简化。本范例按照有关电气规程的要求。使采用阴极保护的构件从电气接地系统隔直，同时保护交流在该系统中的连续性。采用阴权保护的构件所需要的技术要求，从表面上看往往是矛盾的。最理想的应应该是使受阴极保护的系统绝缘；然而，若该系统装有电气装置，那么还必须使它接地。需绝缘同时又南非地。这是装有电气装置的任何系统，在采用阴极保护（CP）减轻腐蚀时都存在的矛盾。
Proper use of DC isolation / AC coupling devices greatly simplifies the cathodic protection of many components. This example follows the requirements of the electrical codes. The use of cathodic protection of components from the electrical grounding system, while protecting the continuity of the exchange in the system. The technical requirements for the use of components that are protected by the use of negative rights are often contradictory on the surface. Ideally, the cathodically protected system should be insulated; however, if the system is fitted with electrical equipment, it must also be grounded. Need insulation at the same time in South Africa. This is a system that is equipped with electrical devices and uses a cathodic protection (CP) to mitigate corrosion.