Uluhlu lwe-GDZG-300 lwe-DC high voltage tester luvavanya i-DC ephezulu yombane we-zinc oxide lighting arrester, i-magnetic blowing arrester, iintambo zamandla, iijenereyitha, iziguquli, iiswitshi, kunye nezinye izixhobo, ezifanelekileyo kwisebe lamandla ombane, isebe lamandla emizi-mveliso, iiyunithi zophando lwenzululwazi, kaloliwe, ishishini imichiza, amaziko amandla.