In an sf6 circuit breaker sulphur hexafluoride gas is used as the arc quenching medium. This video also tell the importance of different.
Air Blast Amp Sf6 Circuit Breaker Design And Construction
Sf6 circuit breaker control circuit diagram. This video describes control circuit operation of cb. In comparison to various other insulating. This tutorial will explain 1how a closing circuit2tripping circuit of a cb works. Remote control by means of a control circuit. The figure below depicting a circuit breaker scheme will be used to explain various elements of the pcbs design and its control. The vacuum circuit breaker has mainly two phenomenal properties.
Understanding a breaker scheme is important if you plan on designing a substation. The sulphur hexafluoride gas sf6 is an electronegative gas and has a strong tendency to absorb free electrons. Sulphur hexafluoride sf6 circuit breaker a circuit breaker in which sf 6 under pressure gas is used to extinguish the arc is called sf 6 circuit breaker. Quite often it is overwhelming to make sense of the entire scheme at a glance. D circuit breaker opening for manual opening press the pushbutton 13. The breakers have a smaller footprint so they use less real estate which can be very expensive.
The pressure inside the vacuum interrupter is approximately 10 4 torrent and at this pressure very few molecules are present in the interrupter. Part 3 of 33 kv relaycontrol panel series in hindi. Operation and working principle of sf6 circuit breaker by learn electrical. Iec indoor sf6 gas circuit breaker hd4 superior performance for smooth protection hd4 breakers are used in electrical distribution for control and protection of cables overhead lines transformer and distribution substations motors transformers generators and capacitor banks. The indicator 11 shows that closing has been accomplished. The working of sf6 circuit breaker is a little bit different in modern time.
When there is a shunt opening release the operation can also be carried out with remote control by means of a control circuit. Sf6 has a number of advantages for use as an insulator. The indicator 10 shows that opening has. The innovation of puffer type. Sf 6 sulphur hexafluoride gas has excellent dielectric arc quenching chemical and other physical properties which have proved its superiority over other arc quenching mediums such as oil or air. Arc quenching inside interrupter with diagram explained.
The sf 6 circuit breaker is mainly. During operation of sf6 circuit breaker this highly compressed gas is released through the arc in the breaker and collected to a relatively low pressure reservoir and then it is pumped back to the high pressure reservoir for reutilizing. The dielectric strength of sf6 increases with pressure so smaller breakers can be used at higher voltages. The contacts of the breaker are opened in a high pressure flow sulphur hexafluoride sf6 gas and an arc is struck between them. Vacuum circuit breaker has a high insulating medium for arc extinction as compared to the other circuit breaker.
Gallery of Sf6 Circuit Breaker Control Circuit Diagram
