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Technical Articles


Transformer Protection – Abstract from NEC

According to NEC 450.4, “each transformer 600 volts, nominal, or less shall be protected by an individual overcurrent device installed in series with each ungrounded input conductor.” Such overcurrent device… Read more

Dec 26, 2011 | By jiguparmar

Transformer protection - Aabstract from NEC (National Electric Code)
Industrial Automation

PROFIBUS at a Glance

PROFIBUS is an open, digital communication system with a wide range of applications, particularly in the fields of factory and process automation. PROFIBUS is suitable for both fast, time-critical applications… Read more

Dec 24, 2011 | By Edvard

PROFIBUS - Optical connection
Electric Motor

Motor starting problem and high motor inrush currents

Electric motor protection device depends on the accurate and correct selection of overload(s), fuses and/or circuit breakers. Over the years the protective devices have been selected according to the applicable… Read more

Dec 23, 2011 | By Edvard

Allen Bradley Motor Controller/Starter Bucket
Industrial Automation

When we started to use PLCs after all?

PLCs (Programmable Logic Controllers) were first introduced in the 1960’s. The primary reason for designing such a device was eliminating the large cost involved in replacing the complicated relay based… Read more

Dec 21, 2011 | By Edvard

When we started to use PLCs after all?

Capacitor Types

In the market, there are several types of capacitors that have been manufactured. Although all capacitors work essentially the same way, key differences in the construction of different capacitor types… Read more

Dec 13, 2011 | By elaina

Capacitor dimensions
Wind Power

What’s Inside a Wind Turbine?

Cant see this video? Click here to watch it on Youtube. There are two basic types of wind turbine design – horizontal and vertical axis. At present, the horizontal axis… Read more

Dec 12, 2011 | By Edvard


The Physics of Light

Man has always been fascinated by light and has constantly striven to unravel its mysteries. History has produced various theories that today strike us as comical but were seriously propounded… Read more

Dec 11, 2011 | By Edvard

A prism makes the colour spectrum of light visible

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