vcb is have vaccume and sf6 cb is filled with sf6 gas which will have good arc quencing property
Sulfur hexafluoride has an octahedron structure.
Sulfur hexafluride (SF6).
It has an octahedral shape.
Sulfur hexafluoride
This chemical formula is SF6.
Sf6 acts as an lewis acid............
vcb is have vaccume and sf6 cb is filled with sf6 gas which will have good arc quencing property
Sulfur Hexafluoride
F6S is the formula for Sulfur Hexafluoride.
Usually in a sealed tank, the switch contacts are in the tank too. The SF6 gas quenches any arcs that form when the switch contacts are opened.
sp3d2
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.
The neutral SF6 molecule has no dipole moment. The gas phase SF6- ion is not that well understood- on the basis that the shape is distorted octahedral a small dipole would be expected.
SF6 is chemically inert due to the reason that the six F atoms protect the sulphur atom from attack by the regents to such an extent that even thermodynamically most favorable reactions like hydrolysis do not occur. The structure of SF6 is as follows.
Not pure SF6 but it can interact with other molecules under certain conditions to create powder.
SF6