Oct. 23, 2011. SINOPOWER passed a random short circuit testing on a 220kV, 240MVA transformer.
As new round of the QC procedure requested by the State Grid Corp of China, SINOPOWER Transformer passed a short circuit testing at the China National Transformer Testing Center. The transformer is rated 230kV/117kV/37kV, 240MVA ONAN, HV +-8x1.25% tap, YNyn0d11, 3 phase, 50Hz. And the tested transformer was randomly picked by the power company. The testing was per IEC 600076 and GB/T6451-2008 and was witnessed by KEMA. The max impedance change during the testing is 0.31%.