Monthly Archive for: «January, 2015»

Important generator set (genset) rating considerations

Rating Definitions A generator set (genset) consists of an engine and a generator and it is best to consider each of them as a system. Individually, each has unique characteristics, but together these qualities have a significant impact… Read more

Jan 30, 2015 | Edvard

Important generator set (genset) rating considerations

Miniature Circuit Breakers (MCBs) For Beginners

Dual functions of a switch and a fuse This technical article focuses on the widely used miniature circuit breakers rated for 240 V or less. These are smaller and lower-rated versions of industrial-grade molded-case… Read more

Jan 26, 2015 | Edvard

Sizing a Static UPS System In Data Center

UPS system serving a data center Choosing the power of a static UPS system serving a data center is a decision that involves various elements and which cannot be made before, or independently from, the… Read more

Jan 23, 2015 | Edvard

The most common LV/MV motor starting devices

Two-state ON-OFF device The most common motor starting device is the low voltage motor-starting contactor. A contactor is defined as “a two-state ON-OFF device for repeatedly establishing and interrupting an electric power circuit.” Contactors are designed… Read more

Jan 14, 2015 | Edvard

The Most Common LV/MV Motor Starting Devices (on photo: Allen Bradley contactor)

Why cooling is essential for long transformer life?

Pushing loads over design limitations As you already know, cooling is really essential for long transformer life. Most transformers are designed for 55°C or 65°C rise. Using newer insulations such as Nomex, temperatures of… Read more

Jan 09, 2015 | Edvard

Cooling is essential for long transformer life
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