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TODAY IN HISTORY

    STREET GAS LIGHTS
    January 28, 1807 - London's Pall Mall

    London's Pall Mall became the first street of any city to be illuminated by gaslight. By 1823 nearly 40,000 lamps had been installed in 215 miles of London streets. Earlier, in 1804, Frederick Albert Windsor, a German entrepreneur, demonstrated and lectured on gas light at the Lyceum Theatre in London. His main interest in gas was for street lighting. Windsor acquired a house in Pall Mall, London and on 4 Jun 1807, the King's birthday, he exhibited lights and a gas-lit transparency along the walls. In 1809-10, Windsor established the first public gas company, The Gas Light and Coke Company, which remained in existence until the company was nationalized in 1948. Other British cities followed London's lead, and installed gas street lamps. For example, Glasgow, Scotland, lit their first on 5 Sep 1818.

    ATOMIC POWER
    January 28, 1958 - Buchanan, NY

    The first privately-owned thorium-uranium atomic reactor to supply power began construction of Buchanan, N.Y. The Consolidated Edison Company's Indian Point 1 nuclear generating station was the first designed to utilize uranium-235 supplemented with thorium-232. It was designed by the Babcock and Wilcox Co., and built at a cost of $100 million on the site of a former amusement park. Its pressurized water reactor produced 275,000 kW of power for part of the New York metropolitan area. The Indian Point 1 operating license was dated 26 Mar 1962. It began generating power on 16 Sep 1962. It was shut down on 31 Oct 1974.because it lacked an emergency cooling system for the reactor core.

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Types Of Switchgear :

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ARTICLE INFORMATION :

Switchboards are used in many electronic applications. Do you know what switchgear is? What do small companies use to direct power where it is needed? Large power plants use switchboards to distribution power.

ARTICLE CONTENT :

There are two systems or panels that are used to redistribute power or electric current to other equipment or circuits. One is the switchboard and the other is switchgear.

Electric switchboards are a device that directs the electricity from one source to another. It is composed of an assembly of panels. Each panel contains switches to allow electricity to be redirected.

With a switchboard, a technician is protected from possible electrocution. The switches in the board control the amount of current that goes into the switchboard. Such switches are fed from a generator which has AC frequency and load sharing controls. It also has gauges that show the frequency and synchroscope.

It is important that the amount of electric power that goes into the switchboard is equal to the electric power going. When you take a look inside the switchboard, you will see a bank of busbars.

The busbars, which are generally bare and supported by insulators, are wide strips of copper that connect to switchgear. The busbars act to allow passage of large electric current through the switchboard.

Before the switchboard is opened for maintenance, it is important to isolate the power because the busbars are bare. These active busbars are a deadly source of power. When working on live switchboards, precautionary measures are crucial. Be ready with your protective equipment such as thick rubber mats and gloves, when working with an open switchboard.

Switchboards are isolated and protected with other equipment including substations, motors, high or medium voltage distribution networks and transformers.

Switchgear are also essential a type of electrical distribution device that is used to convert incoming electrical power into several smaller voltages. Switchgear can also be used as a circuit breaker.

There are many different types of circuit breaker switchgear. Vacuum circuit switchgear have minimal arcing. The arc quenches when it is stretched to less the 2 to 3 mm. They?re frequently used in modern medium-voltage switchgear of up to 35,000 volts.

If you need to de-energizing equipment, you can use switchgear. It also clears faults downstream and comes in varied parameters, which include number of panels, electrical specifications and mounting style.

The common types of switchgear are vacuum circuit breakers, oil insulated switchgear, gas insulated switchgear, and a simple open air circuit breaker. Oil insulated switchgear depend on an oil vaporization blast through its arc.

The gas insulated switchgear stretches the arc with a magnetic field and also depends on the dielectric strength of the gas to quench the stretched arc. The open air switchgear circuit breakers use compressed air to blow out the arc. The displaced air that tries to escape thus blows out the arc.

Circuit breakers are a unique type of switchboards that interrupts fault currents. Their design is especially made for interruption of fault currents.

The Classifications of switchboards are based on the current rating, the amount of interrupting rating, by voltage class, insulating medium, construction types, operating method, type of current, interrupting type, and application.

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    Do you want to see the switchboards we have in inventory? We carry many different switchgear. Do you need electrical supplies of all kinds?

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  • Rudy SilvaOwner :
  • Free Articles / LifetimeArticle Type
  • November 30, 2014Date Added :
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