oil circuit breaker seminars report on powerpoint
#1
Thumbs Down 

Hi i am anjali i would like to get details on oip circuit breaker seminar report on powerpoint…my freind sanjana said oil circuit beraker seminar report on powerpoint will be available here and now i am living at akola and now i am doing poly i need help plz on this
Reply
#2

Oil Circuit Breaker
a high-voltage AC electrical switch whose main contacts are located in a space filled with mineral (transformer) oil. Upon interruption of the electric circuit, an electric arc forms between the contacts of the circuit breaker. Because of the high temperature of the arc the oil is evaporated rapidly and oil vapors are partially decomposed, liberating ethylene, methane, and other gases. A gas bubble is formed in the arcing zone; the pressure in the bubble may be as high as several dozen meganewtons per sq m. The arc is then extinguished, both because of its elongation upon parting of contacts and because of intensive cooling by the gases and oil vapor.
In an oil circuit breaker with simple interruption under oil, the duration of arcing is 0.02-0.05 sec. To extinguish the arc more efficiently, arc-quenching chambers are used. In a longitudinal blast chamber the vapors and gases evolved travel upward along the arc, thus cooling it. In addition, the arc is in contact with the cold oil that fills the annular slots of the chamber, which also accelerates cooling of the arc. In a transverse blast chamber a drastic pressure increase within the gas bubble causes a stream of oil and gases to flow across the arc, thus accelerating the cooling process.
In terms of design, a distinction is made between tank-type oil circuit breakers and oil-minimum, or low-oil-capacity, circuit breakers. In the first type, the main contacts and the arc-quenching devices are located in a grounded metal tank; in the second type they are in an insulating or ungrounded metal enclosure filled with oil. Tank-type oil circuit breakers are inferior to other types of high-voltage breakers in many regards. However, their low cost and high reliability have led to their continued use in the USSR, the USA, and Canada.
In the USSR, tank-type oil circuit breakers are manufactured for voltages from 6 to 220 kilovolts (kV); maximum rated current, 3.2 kiloamperes (kA); breaking current, 50 kA. For voltages of 10 kV or less and breaking currents of 15 kA or less, all three poles of the oil circuit breaker are located in the same tank. For higher voltages and breaking currents, each pole is located in a separate tank. Oil-minimum circuit breakers are used in the USSR, the Federal Republic of Germany, and France. They are manufactured for 3 to 420 kV; since the late 1960’s they have also been manufactured for higher voltages.
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: technical report topics on circuit breaker, seminar projects transformer oil temperature monitoring automatic circuit breaker operation, full report on circuit breaker, ppt on minimum oil circuit breaker, multiple transformer oil temperature monitoring with automatic circuit breaker operation with sms based alert pdf, oil skimmer seminar report pdf file, circuit breaker ppt seminar report,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  traffic alert system circuit for blind tums 0 655 04-11-2018, 02:42 PM
Last Post: Guest
  electric iron circuit diagram free 0 678 18-10-2018, 06:40 PM
Last Post: Guest
  anchoring script for powerpoint presentation competition 0 888 03-10-2018, 10:59 PM
Last Post: Guest
  advantages and disadvantages mains failure alarm circuit in pdf 0 780 01-10-2018, 11:48 PM
Last Post: Guest
  attendance monitoring intelligent classroom circuit diagram 0 582 26-09-2018, 07:05 PM
Last Post: Guest
  led 720 emergency light circuit diagram 0 648 22-09-2018, 01:48 AM
Last Post: Guest
  led 720 emergency light circuit diagram 0 653 19-09-2018, 09:10 PM
Last Post: Guest
Lightbulb circuit diagram of power saver for industrial and commercial establishments 0 671 15-08-2018, 02:22 PM
Last Post: Guest
  at89c2051 ic use in circuit with diagram 0 611 06-08-2018, 09:30 AM
Last Post: Guest
  vegakit 85 circuit 0 479 15-05-2018, 08:36 PM
Last Post: Guest

Forum Jump: