When connecting a transformer to an electrical power source, you need to calculate the current it will draw through the primary. You should then hook the transformer up to a circuit breaker of an equal or higher current rating so that the breaker will not trip under normal operation of the ...
Identification of Magnetizing Inrush for Three-phase V/V Traction Transformer The key issue of traction transformer differential protection is to distinguish magnetizing inrush from internal fault current.The algorithm based on the e... CL Feng,GE Bao-Ming,BI Da-Qiang - 《Journal of the China ...
Where: C/k– necessary level of reactive current to enter control procedure (Ar = amperes reactive) Qc– capacitor step (kvar) U– delta voltage of the grid (kV) k– ratio of the current transformer In modern microprocessor-controlled relaysthe correct C/k adjustment ensues automatically. They...
A numerical method has been devised to calculate pressure rise caused by internal fault gases in tanks of oil-filled power transformers. Fundamental assumption is that compressed volume of hot gases generated from decomposition of oil equals the expansion of transformer tank that withstands inner ...
Arc faultnumerical methodpower transformerpressure risetank ruptureMethodologies in the current state of knowledge to optimize tank geometries for rupture mitigation when internal faults of given arc energy take place, particularly those which use the formula of Hydro Quebec's specification, are sustained...