Energias de Portugal-Distribuição, the main Portuguese DSO, has worked on best practice to restore power in emergency situations and to minimize duration of resulting outages.

How far from a transformer can arresters be located yet still ensure an adequate margin of protection? As explained by Jonathan Woodworth in this edited contribution to INMR, the answer is seldom simple.

Cooling towers are a major source of pollution at substations located near thermal power plants. Moreover, their effect can become critical when prevailing winds blow from towers toward the substation.

The IEC’s first Guide for selecting insulators with respect to pollution in was published 1986 and standardized the concept of creepage distance. Although the Guide quickly found application due to its simplicity, field experience did not always prove successful.

After the cable is laid, to make it a continuous line, each segment of the line must be connected as a whole, and these connection points are called Cable Joint Kits. Cable Joint Kits are used to lock and fix the incoming and outgoing cables and play the role of waterproof, dustproof, and anti-vibra

The fuse invented by Edison more than a hundred years ago was used to protect the expensive incandescent lamps at that time. So do you know expulsion fuse cutout? The expulsion fuse cutout is also a kind of fuse. Next, let us take a look at the advantages and disadvantages of expulsion fuse cutout.