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Monthly Archive for: «September, 2011»

Illuminance recommendations

Recommended minimum illuminances (E) for typical interior lighting tasks. The illuminances are aimed at a lighting level appropriate to the specific visual tasks to be performed in the space or… Read more

Sep 10, 2011 | Edvard

Office lighting design

What Is a Load Break Switch?

A load break switch is a disconnect switch that has been designed to provide making or breaking of specified currents. This is accomplished by addition of equipment that increases the… Read more

Sep 08, 2011 | Edvard

SF6 Insulated Load Break Switch for the use in medium voltage switchboards for secondary distribution networks.

AIS – Air insulated substations

In large, modern AC power systems, the transmission and distribution systems function to deliver bulk power from generating sources to users at the load centers. Transmission systems generally include generation… Read more

Sep 06, 2011 | Edvard

Air Insulated Packaged Substations and Components

Animal deterrents and security in substation

The vast majority of electrical utility substations designed to transform transmission voltages to distribution class voltages employ an open-air design. The configurations may vary, but usually consist of equipment that… Read more

Sep 05, 2011 | Edvard

Six-foot black snake the culprit in power outage

Ohm’s Law – The Resistance

It is intuitive that voltage and current would be somehow related. For example, if the potential difference between two ends of a wire is increased, we would expect a greater… Read more

Sep 02, 2011 | Edvard

Megger device


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