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    FIRST BLACK ASTRONAUT
    August 30, 1983 - United States

    Guion S. Bluford Jr. became the first black American astronaut to travel in space, aboard the third flight of the shuttle Challenger on the eighth Space Shuttle Mission. This was the first mission to launch and land at night. During 98 orbits of the Earth in 145 hours, the crew deployed the Indian National Satellite (INSAT-1B); operated the Canadian-built Remote Manipulator System with the Payload Flight Test Article; operated the Continuous Flow Electrophoresis System with live cell samples; conducted medical measurements to understand biophysiological effects on space flight. STS-8 landed on 5 Sep 1983. By 1992, Bluford had spent 688 hours on four space shuttle flights.

    LEONA HELMSLEY
    August 30, 1989 - U.S.A.

    Leona Helmsley the billionaire New York City hotel operator and real estate investor is convicted and sentenced to 16 years in prison ( Later Most charges were dropped and she served served 18 months in federal prison ) 1 count of conspiracy to defraud the United States. 3 counts of tax evasion. 3 counts of filing false personal tax returns. 10 counts of mail fraud. She is best known for a quote to a former housekeeper Elizabeth Baum when asked about her taxes. "We don't pay taxes. Only the little people pay taxes."

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    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."

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How To Use A Transfer Switch :

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Bring to an end your electric power problems. Use an automatic transfer switch to prevent power surges and blackouts. Your home appliances will be safe with this switch. It safely transfers electric power to the back up unit.

ARTICLE CONTENT :

An Automatic Transfer Switch is an automatic transfer of power source from one to another, this type of switches is more convenient compare to the manual type. An electrical transfer switch is very useful nowadays, because when the main power source is disconnected, it will automatically transfer the power to another electric system.

Electrical transfer switches can be use also when there are changes in voltage power supply. If the voltage power supply changed, it can cause damage to the internal circuit of your appliances at home or at the office.

Transfer switches will initiate the transfer of power to a generator or back-up power source until the voltage becomes stable again. A transfer switch is also called ?Generator Transfer Switches?.

An automatic transfer switch has additional circuit component, which is normally in a form of computer in which the incoming power is being monitor. It monitors the circuit for voltage sags, power surges, power spikes, or brownouts. It also actively initiates action in case there is a complete power loss. When the problem is being detected, the automatic transfer switch begins to start up the emergency power supply.

When the emergency power supply achieved the appropriate level of voltage, the automatic transfer switches will transmit power from the main source to the emergency power supply. While the emergency power supply as the active source of power, continues to monitor the main power supply. Once the main power source becomes stable for a specific period of time, the automatic transfer switch will transmit the power back to the main power supply.

Automatic Transfer Switch, according to the expert in power source is the safe way in connecting electrical load to the power generator as your back up electrical source. If you have installed an electric generator into your power system without an automatic transfer switch, it could break your power generator and everything in the circuit.

There are three methods used by electrical transfer switches in transferring electrical power source. These are break before make, closed transition transfer switch, and soft loading transfer switch. In the break before make method, the transfer switch breaks the contact from one power source before it switches to the other power source.

If there is a small or large switch breakage, break before make method prevents from back feeding of the emergency generator into the electric power line. The Closed Transition Transfer Switch method enables the generator to hold the load while the power supply remains uninterrupted. This method is common in industrial and commercial applications that are using automatic transfer switch system.

The Soft Loading Transfer Switch used the Closed Transition Transfer switch except the amount of load accepted by the generator in constant changed, as the power source is switched. This is the dynamic version of the closed transition switch and is compatible with the automatic transfer switch.

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  • Relectric
    An Automatic Transfer Switch is an automatic transfer of power source from one to another, this type of switches is more convenient compare to the manual type.

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  • Rudy SilvaOwner :
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  • November 30, 2014Date Added :
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