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Monthly Archive for: «July, 2012»

Overvoltages in the IT system

Electrical networks can be subject to overvoltages of varying origins. Some overvoltages, such as differential mode ones (between live conductors) affect all the earthing systems. This section is particularly concerned… Read more

Jul 26, 2012 | Edvard

Single insulation fault on a network operated in IT earthed system

Bus Design In Aboveground Substations

Substations can be constructed partly or entirely within aboveground or belowground enclosures. However, cost is high and complexity is increased by fire-protection and heat-removal needs. The following discussion deals with… Read more

Jul 21, 2012 | Edvard

Gas insulated switchgear (GIS) - Siemens

Effect of Lightning Strike on Electrical Lines

The foregoing discussion concentrated on the principles of lightning strikes and how their effects can be mitigated. However, lightning strikes on electrical lines or substations are those that cause problems… Read more

Jul 20, 2012 | Edvard

Effect of lightning strike on electrical lines

Shunt Reactor Used In HV and EHV Systems

Main Power System parameters are System Voltages and Frequency which normally indicate the healthiness level (they indicate the level of Generated active and reactive Powers against the load power requirement)…. Read more

Jul 17, 2012 | Edvard

345kV Shunt Reactor and Associated Primary Equipment


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