title: Electronic voltage and current transformers testing device.
abstract: A method for testing electronic instrument transformers is described, including electronic voltage and current transformers (EVTs, ECTs) with both analog and digital outputs. A testing device prototype is developed. It is based on digital signal processing of the signals that are measured at the secondary outputs of the tested transformer and the reference transformer when the same excitation signal is fed to their primaries. The test that estimates the performance of the prototype has been carried out at the National Centre for High Voltage Measurement and the prototype is approved for testing transformers with precision class up to 0.2 at the industrial frequency (50 Hz or 60 Hz). The device is suitable for on-site testing due to its high accuracy, simple structure and low-cost hardware.
authors.affiliation: Electric Power Research Institute of Guangdong Power Grid Corporation, No. 8 Shuijungang Dongfengdong Road, 510080 Guangzhou, China. pf6601@163.com
authors.forename: Feng
authors.initials: F
authors.lastname: Pan
authors.forename: Ruimin
authors.initials: R
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Xiao
authors.forename: Weiming
authors.initials: W
authors.lastname: Sun
mesh_terms: D004560:Electricity; D004581:Electronics / Q000295:instrumentation*; D019544:Equipment Failure Analysis / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D035501:Uncertainty