A Test Method for Transient Signal Transfer Characteristics of Electronic Current Transformer

Electronic Current Transformers are widely used in digital substations in China. Tests on transfer characteristics of the transformers should be performed to ensure their normal application. This paper presents a test method for transient signal transfer characteristics of electronic current transformer. A transient signal source, consisting of a series of software and hardware, produces transient current signals of the power system as the input of transformers. A signal acquisition and analysis device, which can be achieved by different equipment, collects the output signals of transformers and performs analysis on them. A real test on electronic current transformers are conducted, of which the test procedure and results are shown in this paper. The test verifies the transfer characteristics of the transformers.