shilati1351
Electrical
- Nov 14, 2012
- 1
Dear Friends,
Here is the problem for solution!
There are two parallel plates which are energized by a HV source.The space between plates filled by dielectric oil which is not an ideal insulator. It means small current passing through the oil but still there is a electrostatic field there.
Now a thin plate of perfect insulator inserted between the parallel plates and inside the oil.
Obviously the passing current reduces because electrons should turn the insulating sheet ,but what happens for the electric field?
It seems there is some free charges accumulated on boundary surface between semi-conductive oil and insulating sheet which affects and dissipates field strength.
How can we calculate field strength by below known data?
- both materials dielectric constant and dimension are known.
- Oil volume resistivity is known
- Applied voltage and passing current can be measured.
Your help is highly appreciated!
Here is the problem for solution!
There are two parallel plates which are energized by a HV source.The space between plates filled by dielectric oil which is not an ideal insulator. It means small current passing through the oil but still there is a electrostatic field there.
Now a thin plate of perfect insulator inserted between the parallel plates and inside the oil.
Obviously the passing current reduces because electrons should turn the insulating sheet ,but what happens for the electric field?
It seems there is some free charges accumulated on boundary surface between semi-conductive oil and insulating sheet which affects and dissipates field strength.
How can we calculate field strength by below known data?
- both materials dielectric constant and dimension are known.
- Oil volume resistivity is known
- Applied voltage and passing current can be measured.
Your help is highly appreciated!