'VPM' appears to be some non-standard symbol for 'volts per metre', the correct symbol for which is 'V/m'. For insulators, many tables list their dielectric strengths in kilovolts per metre (kV/m) or even kilovolts per millimetre (kV/mm).
For an insulating material dielectric strength and dielectric loss should be respectively
No, these are two unrelated properties of a material.
dielectric strength is tested by transformer dielectric strength oil testing machine. at first, oil which is to be tested is pour near the two electrode. both the electrode should be dipped in oil . then adjust the distance between the electrode .now start the machine.when a sound came from machine then note down the dielectric strength of the oil.
One field in which this is helpful is in the manufacture of insulating materials. Dielectric strength determines the strongest electric field an insulator can withstand before it fails. For example, if the insulation around a wire melts or breaks, the insulator's dielectric strength is compromised.
According to a few charts I was able to find, the most realistic material with the highest dielectric strength happens to be Mica, with dielectric strength of 118.
For an insulating material dielectric strength and dielectric loss should be respectively
This depends on the particular dielectric. Each has a different breakdown strength.
The dielectric strength of vacuum is infinite because there is no molecule in the vacuum.
For an insulating material dielectric strength and dielectric loss should be respectively high or low
it decreases in strength in meany ways for different materials for exsample, with gases if there is an increase in humidity, then it decreases the dielectric strength
high and high
No, these are two unrelated properties of a material.
The dielectric breakdown strength is 3,000 volts per millimeter.
ASTM D149 - 09 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
dielectric strength is tested by transformer dielectric strength oil testing machine. at first, oil which is to be tested is pour near the two electrode. both the electrode should be dipped in oil . then adjust the distance between the electrode .now start the machine.when a sound came from machine then note down the dielectric strength of the oil.
Generally, increased moisture levels will lower breakdown strength, especially if the dielectric readily absorbs water. Increasing temperature generally decreases breakdown strength of solid dielectrics. The dielectric strength of some materials may increase with temperature within limited temperature ranges. However, dielectric strength eventually begins to decrease at higher temperatures.
One field in which this is helpful is in the manufacture of insulating materials. Dielectric strength determines the strongest electric field an insulator can withstand before it fails. For example, if the insulation around a wire melts or breaks, the insulator's dielectric strength is compromised.