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Monthly Archive for: «February, 2013»

Energy and Power

An Overview Of Short Circuit Current (part 2)

Continued from previous technical article: An Overview Of Short Circuit Current (part 1) Sub transient reactance Xd” is the apparent reactance of the stator winding at the instant short circuit… Read more

Feb 27, 2013 | By Asif Eqbal

An Overview Of Short Circuit Current - Part 2
Energy and Power

An Overview Of Short Circuit Current (part 1)

There are essentially four types of faults: three-phase, single line-to-ground, double line-to-ground, and line-to-line. Each of these types of faults can result in different magnitudes of fault current. In all… Read more

Feb 25, 2013 | By Asif Eqbal

An Overview Of Short Circuit Current (part 1)
Electrical Lectures

Super Capacitors – Different Than Others (part 1)

Capacitors store electric charge. Because the charge is stored physically, with no chemical or phase changes taking place, the process is highly reversible and the discharge-charge cycle can be repeated over… Read more

Feb 23, 2013 | By sravankumarpadala

Different then others - Super Capacitors
Medium Voltage

Things You Should Know About Medium Voltage GIS

Environmental Concerns Safety Concerns Special Handling Procedures Installation Concerns Operation and Maintenance Concerns End of Life / Recycling Concerns Conclusion Medium voltage (5-38 kV) gas insulated switchgear (GIS) differs greatly… Read more

Feb 20, 2013 | By Edvard

Things You Should Know About Medium Voltage GIS
High Voltage

Using High-Speed Grounding Switches

Automatic high-speed grounding switches are applied for protection of power transformers when the cost of supplying other protective equipment is deemed unjustifiable and the amount of system disturbance that the… Read more

Feb 15, 2013 | By Edvard

Using High-Speed Grounding Switches

How Do We Define Hazardous Areas?

The first requirement is to know what a hazardous area is. The principal factors relevant to the classifications of a hazardous area are the nature of the gases or dust… Read more

Feb 09, 2013 | By Edvard

How Do We Define Hazardous Areas?
Electric Motor

How Motor Really Works?

The basic working of a motor is based on the fact that when ‘a current carrying conductor is placed in a magnetic field, it experiences a force’. If you take… Read more

Feb 08, 2013 | By Edvard

Motor action
Wind Power

How to Monitor Wind Speed?

When considering wind power, most people ask what the average annual wind speed is and how to get that number. The usual response is that you must monitor the wind… Read more

Feb 04, 2013 | By Edvard

How to monitor wind speed?

Connections Of Overcurrent Relay (part 2)

Continued from first part: Types and Applications Of Overcurrent Relay (part 1) It’s used for: 3-phase faults the overcurrent relays in all the 3-phases act. Phase to phase faults the… Read more

Feb 02, 2013 | By jiguparmar

Connections Of Overcurrent Relay

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