The term
2.0.1 Stray current refers to the current flowing in a non specified circuit. Leakage current flowing into the ground or buried metal objects due to intentional and unintentional grounding. 2.0.2 Stray current corrosion is caused by external current corrosion caused by currents flowing on non designated circuits. 2.0.3 Protective potential The potential required for effective protection of metals. 2.0.4 Polarized potential The potential at the electrode/electrolyte interface becomes polarized due to the deviation of the potential caused by the flow of current. 2.0.5 Cathodic protection is a method of controlling electrochemical corrosion through cathodic polarization, including sacrificial anode method and impressed current method. 2.0.6 Transition resistance The resistance per unit length between the running rail and the structure, between the running rail and the earth, or between two other conductors. 2.0.7 Stray current drainage devices are devices that achieve electrical corrosion protection through electrical drainage. 2.0.8 Return cable of return line; The track negative cable connects the wires of the return rail and the substation, or is laid in parallel with the steel rail to serve as the return wire
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