Showing posts from November, 2018

Different Types of Electrical Switches and Their Uses

Different Types of Electrical Switches Normally Used in CircuitsThere are so many types of electrical switches available from very simple to very complex switches used in electrical circuit controlling system. 

Switch may different types but the basic function of electrical switch is to open or close. The meaning of electrical switch is to open or close the electrical path to equipment. 

What are the different types of electric switches that uses in every home?When we name the switches, we find some common and lovely switches as below:
SPST- Single pole, single throw switch. It is simple on-off switch just having  two terminals are either connected together or disconnected from each other by phase P1 and terminal T1.
It is also classified into two types: SPST-NO-single pole, single throw, normally open known as Type-A and SPST-NC- single pole, single throw, normally closed known as Type-B. 

The most common and simple type of electric light switch is the one way switch. A very simple one wa…


Jack & Plug or Plug & Socket Configuration in Various CountriesThere is no guy who haven’t faced to fix unmatched Plug & Socket or Jack & Plug what ever you say. Especially you, who frequently visit different location or live in Asian country where not follow any specific standard, often face this problem during using computer/laptop, mobile etc charger.
Most of the developed countries use jack and plug configuration as per some international standard or their local standard, but many countries do not follow any specific standard, they use various configarated jack and plug what causes of this problem.
Some of standard jack and plug descriptions are quoted below that are using in Europe, America and other countries-

Jack                   Plug Description Using Countries Schuko European
CEE 7 EU, Austria, Netherland, French, Germany, Irish, Italy, Norway, Sweden, Switzerland

Ungrounded Eurocord
CEE 7/16 EU, Belgium, Denmark, Netherland, French, Germany, Italy, Norway, Portugal…

Wireless Electrical Energy Transmission

WEET, wireless electrical energy transmission is now issue to transfer electrical power in large-scale and longer distances; because wireless energy transfer system is not a new question. Electrical energy transmission networking system already using the wireless energy transfer technology or unlike direct electrical connection. WEET system will be clear if you review your knowledge about basic working principle of electrical transformer.
Now today’s target to transfer electricity without wire from source to consumer’s end in a large-scale. Already there are many demonstration and operational stuff regarding wireless electricity transfer in normal scale, like- mobile battery charger, operating TV, Laptop etc. devices.
What Is the Wireless Electrical Energy Transmission Technology? Engineers’ are searching a practical technology to transmission electrical energy from one to others without wire. The provable technologies like Inductive-coupling, Capacitive-coupling, Magneto dynamic-coupl…

10 Lowest Electricity Accessible Countries in the World

Which Country Access the Less Electricity   in the World?Electricity is the most essential part of daily-life today. But fact is that around 1285 million people still access no electricity today over the world. The most of them are in Africa and Asia. Now everybody realized that without access to electricity sustainable development is not possible, most of the countries are trying the increase the electricity access rate up to 100% and trying everyday.

In Asia around 622 million people out of 3.6 billion do not have electricity. Large percentage of people do not have electricity access in North Korea, Myanmar (Burma) and Cambodia. On the other hand Malaysia, Singapore, Thailand, Brunei and Mongolia are accessing electricity hundred percent people.
India has the largest population that does not have to access electricity around 304 million people. Indian 94 percent urban and 67 percent rural people can access to electricity.
In America 23.2 million  out of 466.1 million people do not have…

Copper and Aluminum Bus-bar Size Selection Chart

What is Bus-bar?Bus-bar is the common header where one or multiple sources poor the power also one or more sources can take power simultaneously; means bus-bar is a common bas that receive power and release power.

Literally, the bus bar is usually very thick wire or bar that leads from the power source and is the wire that every load in the system is connected to.

Bus-bar like a city water reserver where water accumulated and distributed from.
Types of Bus barBus bar mainly classified into two, though the function is same.
1.In outdoor substation the bus bar is a kind of bulk sized aluminum conductor;
2.In indoor substation copper or Aluminum bar is used as bus bar.
Why Bus bar is required in electrical transmission network?
In electrical substations, the bus-bar is a common component where all the anchorages that have the same voltage level are connected. In an electrical transmission network it’s required an electrical node but it is physically impossible to connect all the bays- such as


What Is RCD or Residual Current Device?RCD or Residual Current Device is a generic term which covers both RCCB (Residual Current Circuit Breaker) and RCBO (Residual Current Circuit Breaker with Overload).
RCD is a protective device in electrical system which automatically disconnect the supply system  when imbalance detected in the value of phase and neutral current. British Standard BS 7671 defined RCD is as below: A mechanical switching device or association of devices intended to cause the opening of the contacts when the residual current attains a given value under specified conditions. The protective device RCD actually protect- direct and indirect contact, fire and thermal effect.

For clear understand the difference between RCD and other broadly used Circuit Breaker, we should remember the  definition of RCCB, RCBO, ELCB, GFCI etc.

RCCB (Residual Current Circuit Breaker) is an electrical protective device that break or disconnects the circuit to become in safe mood whenever it detec…