Electrical Noise Tests for Evaluating Control Cable and Control Circuits for a Solid State Logic System

This paper presents the results of tests conducted at the Trojan nuclear power plant near Rainier, Oregon, to assess the electrical noise filtering capabilities of the input buffer circuits to be used in a solid state plant logic system and to assess the general levels of electrical noise induced in different types of cables laid in a system of 480-V low power cables in a typical fashion. The tests confirmed that the input buffers had adequate filtering capability when used in typical power plant applications. The test data are discussed pointing out its limitations and the importance of proper cable selection and routing.