3 Bad Conditions That Cause False Differential Current In Power Transformer

When applying differential protection of power transformer, three bad conditions must be considered which can lead to unbalance to the currents applied to the relay (compared with the expected currents… Read more

Dec 27, 2017 | Power Substation

10 Common Questions You Can Expect In Electrical Engineering Examination Test

This examination will focus on testing the fundamentals of electrical engineering from low voltage to high voltage. Of course, you can use huge EEP’s resources for help in calculations and… Read more

Dec 26, 2017 | Electric Motor

This Is Why HVDC Transmission System Beats HVAC In These Essential Applications

For the most part, electric power is transmitted worldwide by means of ac. However, there are certain applications where dc transmission offers distinct economic and/or performance advantages. These applications include… Read more

Dec 21, 2017 | High Voltage

Important Factors In Design Of Distribution Substations

Distribution substation design must be a combination of reliability and quality of the power supply, safety, economics, maintainability, simplicity of operation, and functionality. Safety of life and preservation of property… Read more

Dec 20, 2017 | Power Substation

What does a good grounding of the power substation and switching station really mean?

Provision of adequate grounding in a substation and switching stations are very important for the safety of operating personnel as well a electrical devices do not rise above tolerable thresholds… Read more

Dec 18, 2017 | Power Substation

Analyzing Power System And Equipment Performance Through Oscillographic Records

Most technically oriented people recognize the familiar 60Hz voltage and current traces that constitute the parameters of an operating power system. There are, however, transient components superimposed on the 60Hz…...

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Dec 15, 2017 | Premium Content ♛

Contactor As An Important Part Of The Motor Control Gear

Motor control gear and associated circuitry are fundamental parts of electrical distribution and utilisation systems. Motor control gear in its simplest form may be a direct on-line starter consisting of… Read more

Dec 15, 2017 | Electric Motor

Primary Injection Testing Of Protection System For Wiring Errors Between VTs / CTs and Relays

This type of test involves the entire circuit – current transformer primary and secondary windings, relay coils, trip and alarm circuits, and all intervening wiring are checked. There is no… Read more

Dec 13, 2017 | Protection

10 Different Duty Types (Load Cycle) Of A Three-Phase Asynchronous Motors

The term duty defines the load cycle to which the machine is subjected, including, if applicable, starting, electric braking, no-load and rest de-energized periods, and including their durations and sequence… Read more

Dec 11, 2017 | Electric Motor

7 Bad Effects Of Corona On Transmission Lines

All the diverse ionization processes involved in producing corona discharges in the highly stressed regions near the conductors of transmission lines, as well as the creation and movement of charged… Read more

Dec 08, 2017 | High Voltage