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Technical Articles

Electric Motor

Direct Starting Of Squirrel-Cage Induction Motors

The direct starting (Direct On Line, DOL) is the simplest and most cost-efficient method of starting a motor. This is assuming that the power supply can easily deliver the high starting… Read more

Feb 16, 2013 | By Edvard Csanyi

Direct Starting Of Squirrel-Cage Induction Motors
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 Csanyi

Using High-Speed Grounding Switches
Safety

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 Csanyi

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 Csanyi

Motor action
Energy and Power

Did Tesla Discover the Secrets of Antigravity?

Nikola Tesla has been credited for the creation of much of the technology that we take for granted today. Without the genius of Tesla we would not have: Radio, Television,… Read more

Feb 06, 2013 | By Edvard Csanyi

Did Tesla Discover the Secrets of Antigravity?
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 Csanyi

How to monitor wind speed?
Protection

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
Protection

Types and Applications Of Overcurrent Relay (1)

Types of protection: Unit Type Protection Non-unit schemes Overcurrent protection Earth fault protection Various types of Line Faults Overcurrent Relay Purpose and Ratings Primary requirement of Overcurrent protection Purpose of… Read more

Feb 01, 2013 | By jiguparmar

Types, applications and connections of Overcurrent relay
Transformers

What is transformer rating based on?

In the U.S., transformers are rated based on the power output they are capable of delivering continuously at a specified rated voltage and frequency under “usual” operating conditions without exceeding… Read more

Jan 30, 2013 | By Edvard Csanyi

What is transformer rating based on?
High Voltage

High Voltage Substations Overview (part 2)

Continued from first part: High Voltage Substations Overview (part 1) Transformers are used for the transformation of high and medium voltage to low voltage, flanked by specific protective devices and… Read more

Jan 26, 2013 | By Emmanouil Angeladas

High Voltage Substations Overview (part 2)
High Voltage

High voltage substations overview (part 1)

High voltage substations are interconnection points within the power transmission and distribution systems between regions and countries. Different applications of substations lead to HV substations with and without power transformers: Step… Read more

Jan 25, 2013 | By Emmanouil Angeladas

Substations and Distribution Substations Overview


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