GDJW-40B irashobora gukoreshwa mugupima voltage yo gukwirakwiza insulirateri yahagaritswe cyangwa laboratoire yo gutahura insulator ihagaritswe, kandi igashobora gutahura neza ibibazo byihishe imbere muri insulator, kunoza imikorere yimikorere ya sisitemu ya gride, no kunoza imikorere. imikorere myiza yabakozi kumurongo bakora ikizamini kizima.