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Monthly Archive for: «April, 2013»

Erection procedure for HV switchgear (Part 1)

Important points Before commencing erection of HV switchgear check that all connections are tight on busbars and on main circuits as well as auxiliary circuits. Examine the insulation very carefully, because there have been… Read more

Apr 29, 2013 | Edvard

Erection procedure for HV switchgear

Why Lamp Flickers Sometimes

Voltage regulation Voltage regulation has been one of the most important problems of the electric industry since its inception. The sizes of many parts of a power system are determined largely by this one consideration alone…. Read more

Apr 27, 2013 | Edvard

Why lamp flickers sometimes

Overvoltages Caused by Lightning

The Impacts of Lightning Overvoltages of atmospheric origin arise from uncontrollable sources and their severity for the load depends on many parameters that are determined according to where the lightning strikes and the structure… Read more

Apr 26, 2013 | Edvard

Overvoltages Caused by Lightning

Smart Grids and The New Age of Energy

Smart grid requirements // Network planning Power electronics (HVDC/FACTS) Bulk renewable integration Energy Management System (EMS) Smart substation automation and protection Integrated Substation Condition Monitoring (ISCM) Communication Solutions Distribution Management System (DMS) Distribution automation… Read more

Apr 24, 2013 | Emmanouil Angeladas

Smart Grids and The New Age of Energy

Conductor Types Used For Overhead Lines

Aluminium and its alloys conductor steel reinforced The international standards covering most conductor types for overhead lines are IEC 61089 (which supersedes IEC 207, 208, 209 and 210) and EN 50182 and 50183 (see… Read more

Apr 20, 2013 | Edvard

Conductor Types Used For Overhead Lines

Using AC switchgear in DC applications

Skin effect Switchgear designed for alternating current can carry at least the same rated continuous operational DC current. With direct current the skin effect in the circuits disappears and none of the specific effects… Read more

Apr 19, 2013 | Edvard

Using AC switchgear in DC applications

Visual Tasks of Typical Living Room Lighting

Flexible Lighting Design Solution Most living rooms require flexible lighting design solutions because they serve a broad variety of changing functions. The lighting in a typical living room should comfortably serve small group conversation,… Read more

Apr 17, 2013 | Edvard

Visual Tasks of Typical Living Room Lighting

Grounding systems and their 3-letter classification

Protective Ground Connection Low voltage systems supplying to consumer premises are predominantly solidly grounded. Protective ground connection to consumer premises (or extending the supply system ground to consumer premises) is however done in different ways…. Read more

Apr 12, 2013 | Edvard

Grounding systems and their 3-letter classification
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