... overseas,we deve-Ioped SC9,SCB9 series and SC10,SCB10 series padding thin-insulation dry-type distributing transformer whose winding is sealed ... up with epoxy, therefore the resin insulating dry-type transformer is flame-retardant, explosion-proof, free from maintenance and pollution and it is ... when there is fauIt or the temperature is exceeded and switch off as welI as the function of "black box". ...