GDJW-40B waxaa loo isticmaali karaa si loo tijaabiyo voltag qaybinta ee dallaal hakiyay eeday ama ogaanshaha shaybaarka ee insulator la hakiyay, iyo awood in si wax ku ool ah loo ogaado dhibaatada qarsoon gudaha insulator ah, hagaajinta isku halaynta hawlgalka ee nidaamka grid korontada, iyo wanaajiyo. hufnaanta shaqo ee shaqaalaha khadka ee fulinaya imtixaanka tooska ah.