The HG Fuse Is An Expulsion Type And Its Main Function Is To Protect Transformers On Rural Distribution Network. It Is Also Particularly Useful For Inaccessible Sub-Stations Where Indication Of Fusing Is Of Advantage.
On Blowing Of Fuse Element, the Fuse Carrier Hangs Down Vertically From the Bottom Contact. This Is Advantageous In Locating The Fault As Hanging Fuse Carrier Is Noticeable From Distance And This Saves Time Which Otherwise Would Be Taken In Investigation. Lift Out the Fuse Carrier By Means Of The Insulated Operating Rod, Rewire The Fuse Element And Swing It Up The Carrier And Thus Remake The Circuit. It Is Used For Protection Against Overload For Each Phase.