GDJW-40B itha kugwiritsidwa ntchito kuyesa ma voltages ogawa a insulator yoyimitsidwa yoyimitsidwa kapena kuzindikira kwa labotale kwa insulator yoyimitsidwa, ndikuthandizira kuzindikira zovuta zobisika zamkati mwa insulator, kukonza kudalirika kwa magwiridwe antchito a gridi yamagetsi, ndikuwongolera. mphamvu yogwira ntchito ya ogwira ntchito pamzere omwe amayesa amoyo.