Hello, I need a guidance about Standard cable gland, Stuffing cable gland and Insulated cable gland - their definitions and application.

I found this article after a web search on the assumption you may have been looking at how the terminology came about and why it might be confusing (been there )

amphenol-industrial.com/.../ "The Fascinating History of Cable Glands: From Cloth to Cutting-Edge - Amphenol Industrial Operations".

Hopefully useful background 

I found this article after a web search on the assumption you may have been looking at how the terminology came about and why it might be confusing (been there )

amphenol-industrial.com/.../ "The Fascinating History of Cable Glands: From Cloth to Cutting-Edge - Amphenol Industrial Operations".

Hopefully useful background 

perhaps be aware that 'knob & tube' wiring depicted in that article is a peculiarly North American thing, at the same time over here we were using India rubber double cloth covered indoors and the wire was insulated along the full length - perhaps the  use of higher voltages drove that decision. The use of singles stapled to wooden joists was common, though in better installations it appeared within split wall " slip" conduit.

Outdoors we had indoor cables in welded galvanized conduit or paper insulated lead clad , where the paper was oiled.  There is a fair amount of that still in use underground today, and if it was not so hard (expensive) to make and join we'd probably still be using it. Somewhere between the late 1930s and the present day, mineral insulated copper clad came and went as well -  and that uses a lot of glands.

Mike.