Plaub kab ntawm kev tiv thaiv xob laim:
A, shielding (thaiv): xob laim, xob laim pas nrig, siv cable thiab lwm yam kev ntsuas, tsis nyob ib ncig ntawm qhov kev tawm tsam tsis ncaj qha mus ntaus cov hlau;
2. Insulator non-flashover (blocking): ntxiv dag zog rau cov rwb thaiv tsev, txhim kho ...
nyeem ntxiv