Clearance & barrier
Clearance & barrier
(OP)
Hi, been picking up bits of useful knowledge just reading the board.So wondering if you guys can help me.
On MV gears design, I have often come across barrier place between the phases or ph - earth. I am told that these are able to reduce the required air clearance. they act to prevent flashover.
Place incorrectly and these become another burning material
How do they work?
How do we decide on material, spacing needed.
Any good books or writeups?
Regards
On MV gears design, I have often come across barrier place between the phases or ph - earth. I am told that these are able to reduce the required air clearance. they act to prevent flashover.
Place incorrectly and these become another burning material
How do they work?
How do we decide on material, spacing needed.
Any good books or writeups?
Regards





RE: Clearance & barrier
The material would be decided upon based on its electrical properties and the amount of room available between two conductors and ground.
RE: Clearance & barrier
But I am interested in more details.
On how we can work out the space reduction and suitable material.
Material with dielectic rigidity 12kV/mm
System being 12kV
Add material 1mm thick around the conductor and we could have 2 conductors siting side by side ?
Should we be considering the current pssing through the insulator and so the heat generated. Effects on the material due to heat?
RE: Clearance & barrier
----------------------------------
Your body may be a temple. Mine is an amusement park...