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What is the dielectric effect?
Insulation property of a material
Why is water the enemy of insulation?
Water decreases the overall thermal performance of the insulation, also water may just short circuit around the insulation and render it useless.Water, if present on dielectric surface, due its high conductivity decreases the surface resistivity of the dielectric, thus causes high creepage current (surface current).
Where is the knowledge of dielectric strength helpful?
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.
Which one of the following tests should not be applied routinely to equipment earth continuity insulation resistance polarity dielectric strength?
d. Dialtetric Strength
What is insolation resistance?
I think you mean 'insulation resistance'. This is exactly what it says it is, it is the resistance between opposite sides of an insulator or dielectric. It is in the order of megohms and, in the case of a cable, is inversely proportional to its length -i.e. the longer the cable, the lower its insulation resistance.
Difference between insulation resistance and dielectric strength?
INSULATION RESISTANCE: The insulation resistance is a measure of the capability of a material to withstand leakage of current under a Vdc potential gradient. DIELECTRIC STRENGTH: The dielectric strength is a measure of the ability of the material to withstand a large field strength without electrical breakdown, and is usually expressed in volts per mil (.001') or volts per cm of dielectric.
What is the dielectric?
Insulation property of a material
What is the dielectric effect?
Insulation property of a material
Why is water the enemy of insulation?
Water decreases the overall thermal performance of the insulation, also water may just short circuit around the insulation and render it useless.Water, if present on dielectric surface, due its high conductivity decreases the surface resistivity of the dielectric, thus causes high creepage current (surface current).
What is milinex?
it is biaxially oriented pet film.With high dielectric and mechanical property ,it is suitable for electrical insulation, such as slot insulation, ,interurn and liner insualtion ,wrapping insulation for coils and cables, as well as producing insulation laminate meterial.
What is milinex paper?
it is biaxially oriented pet film.With high dielectric and mechanical property ,it is suitable for electrical insulation, such as slot insulation, ,interurn and liner insualtion ,wrapping insulation for coils and cables, as well as producing insulation laminate meterial.
What is difference between breakdown voltage and dielectric strength of transformer?
The dielectric strenght of a transformer represents the maximum voltage permissible to apply across the transformer insulation i.e. between the transformer winding to another part of the transformer, normally the chassis or another winding and without break-down of the insulation ocurring (e.g. arcing). The breakdown voltage of a transformer represents a voltage that exceeds its dielectric strenght and that causes breakdown e.g. arcing across the insulation.
What is the basic insulation level of various electrical equipments?
BIL or basic impulse insulation level is the dielectric insulation gradient of a material tested to withstand the voltage stress at a voltage impressed between the material and a conductive surface beyond the BIL rating, an electric tracking starts to occur which will then result into an arcing flashover to the conductive surface. In addition it is the capacity of an equipment to withstand mechanical stress..like lightning strike without causing any damage to the equipment...
Where is the knowledge of dielectric strength helpful?
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.
Is a substance that inhibits or stops the flow of free elections?
A dielectric, insulator or insulation Is a substance that inhibits or stops the flow of free elections
Which one of the following tests should not be applied routinely to equipment earth continuity insulation resistance polarity dielectric strength?
d. Dialtetric Strength
Velocity factor of a 14 awg cable?
Velocity factor depends to a large extent on the dielectric (insulation) used. You will have to specify the exact cable to answer this question.
