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Rules Of Technology !

Posted by ash.finest on April 30, 2012 at 5:10 AM Comments comments (43)

       The first rule of any technology used in a business is that Automation apllied to an efficient operation will mangify the efficiency.

       The second is that Automation applied to an inefficient operation will magnify the inefficiency.

  - Bill Gates

How SCADA Systems Work?

Posted by ash.finest on April 4, 2012 at 2:20 AM Comments comments (0)

A SCADA system performs four functions:

Data acquisition

Networked data communication

Data presentation

Control

These functions are performed by fourkinds of SCADA components:

Sensors (either digital or analog) and control relays that directly interface with the managed system.

Remote telemetry units (RTUs). These are small computerized units deployed in the field at specific sites and locations. RTUs serve as local...

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What is SCADA?

Posted by ash.finest on April 4, 2012 at 2:15 AM Comments comments (0)

SCADA is an acronym that stands for Supervisory Control andData Acquisition. SCADA refers to a system that collects data from varioussensors at a factory, plant or in other remote locations and then sends thisdata to a central computer which then manages and controls the data

SCADA systems are used not only in industrial processes: e.g.steel making, power generation (conventional and nuclear) and distribution,chemistry, but also in some experimental facilities such as nuclear fusion. Th...

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What is Science......

Posted by ash.finest on April 3, 2012 at 1:50 AM Comments comments (0)

   Science is nothing but trained and organized common sense differing from the latter only as a veteran may differ from a raw recruit: and its methods differ from those of common sense only as far as the guardsman's cut and thrust differ from the manner in which a savage wields his club.

Difference between surge arrester and lightning arrester?

Posted by ash.finest on April 3, 2012 at 1:50 AM Comments comments (0)

This is mainly a matter of semantics. Historically, the motivation for using arresters was to deal with lightning, so they were called 'lightning arresters'. But as system voltage increased, it became apparent that there could be switching-induced surges that were more damaging than lightning, so today, the preferred term is probably 'surge arrester'.

 

There is a technical distinction between a 'surge suppressor' and a 'surge arrester' that has to do with the energy ...

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