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Why sf6 circuit breaker is mostly used in substations rather than other?
Rather than where? Circuit breakers are always located in substations.
What is the difference between Air circuit breaker and Vacuum circuiut breaker?
"Air" and "Vacuum" describe how the breaker extinguishes the arcing current. An Air breaker opens far enough that the dielectric strenght of air is enough to extinguish the arc. A vacuum breaker's contacts are in a vacuum. Oil breakers use oil. SF6 breakers use SF6 gas to extinguish the arc.
Is Sodium Hexa Fluoride Gas used in electrical circuit breakers?
yes SF6 gas is used in modern ckt. breaker.
Is it possible to use an Air Circuit Breaker for protection on 11KV line instead of SF6's Circuit Breakers?
Craig, Please refer to Australian Standard AS3000:2007 for the answer.
Is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?
is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?
What are the differences between a vacuum breaker and a SF6 gas circuit breaker breaker and a sf6 gas circuit breaker?
vcb is have vaccume and sf6 cb is filled with sf6 gas which will have good arc quencing property
Which type of circuit breakers used in EHT applications?
SF6 circuit breaker
What deference between vacuum circuitb reaker and sf6 breaker?
A vacuum circuit breaker has the circuit interrupting contacts inside a vacuum bottle. Without air the arc created by interrupting the circuit contains only material from the contacts. As a result the arc cannot sustain itself as well as it would if in air and the contacts will be able to handle higher currents. In an SF6 breaker the arc occurs in SF6 gas. SF6 captures free electrons from the arc quickly quenching it. In the process SF6 is broken apart but will recombine back into SF6. Some "SF6" breakers use vacuum bottles. This results in the small size of SF6 Switchgear with the advantages of vacuum breakers.
Why sf6 circuit breaker is mostly used in substations rather than other?
Rather than where? Circuit breakers are always located in substations.
What is the difference between Air circuit breaker and Vacuum circuiut breaker?
"Air" and "Vacuum" describe how the breaker extinguishes the arcing current. An Air breaker opens far enough that the dielectric strenght of air is enough to extinguish the arc. A vacuum breaker's contacts are in a vacuum. Oil breakers use oil. SF6 breakers use SF6 gas to extinguish the arc.
What is the maximum acceptable tan delta value of 132 KV SF6 circuit breaker?
Less than 65 ohms
What is a Circuit breaker and explain type circuit breakers?
A circuit breaker is a switching device which can make,brake and carrying (or trip the circuit) that specified over currents for a small interval of time . There is a different types of Circuit Breaker's are there 1.According to their arc quenching media these are divided into 4 types a) Oil circuit breaker b) Air blast circuit breaker c) SF6 circuit breaker d) vacuum circuit breaker 2. According to their services the circuit breaker can be divided as a) Outdoor Circuit Breaker b) Indoor Breaker 3. According to the operating mechanism of circuit breaker they can be divided as a) Spring operated Circuit Breaker b) Pneumatic Circuit Breaker c) Hydrolic Circuit Breaker 4. According to the voltage level of installation these are divided into 3 types a) High Voltage Circuit Breaker b) Medium Voltage Circuit Breaker c) Low Voltage Circuit Breaker.
Is Sodium Hexa Fluoride Gas used in electrical circuit breakers?
yes SF6 gas is used in modern ckt. breaker.
How sf6 circuit breaker work?
As the breaker is tripped, a magnetic coil is beneath it and as the movable contact falls into the coil the arc is elongated in a spiral caused by the magnetic coil until the SF6 quenches the arc.
Is it possible to use an Air Circuit Breaker for protection on 11KV line instead of SF6's Circuit Breakers?
Craig, Please refer to Australian Standard AS3000:2007 for the answer.
What are the three main types of high voltage switching gear met with in industrial installations?
High voltage switch gear operates in the voltage range of 36 kV and above. Minimum oil circuit breaker, air blast circuit breaker and SF6 (Sulphur hexafluoride) circuit breaker are the three mostly used disconnects for high voltage switchgear.
Why air circuit breaker not using for ht lines?
The dielectric strength of SF6 gas compared to air at the same conditions (temperature, pressure, etc.) is approximately 2.5 times that of air. This means SF6 equipment can be made smaller (thus more cheaply), because the contacts do not need to separate as far. Oil circuit breakers are used for the same reason.
