Quick Details Place of Origin: Beijing, China (Mainland) Brand Name: HYLITON POWER Model Number: LDZC-10/24/35kV Usage: Current Phase: Single/Three Coil Structure: Toroidal Coil Number: Autotransformer Rated frequency: 50Hz or 60Hz Rated secondary current: 5A or 1A Rated short-time thermal current: 40kA,1s Rated continuous thermal current: 120%In Continuous power-frequency voltage: 3kV , 1min Instrument security factor: FSâ?¤10