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What is the difference between conductor resistance and insulation resistance?
Wiki User
∙ 12y ago
The resistance of a conductor is relatively low while an insulator should have very high resistance. The former is used to transmit electricity and the latter is designed to inhibit flow of electricity.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoIn the general sense, a conductor's resistance is usually in the milliohm to low ohms range, whereas an insulator's resistance is in the megohm range.
For an insulated conductor, the resistance of the conductor is directly proportional to its length, whereas its insulation resistance is inversely proportional to the length of the conductor.
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What is the difference between insulation resistance and earth resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
What is difference between insulation resistance test and polarization index?
Insulation resistance test: This test is used to find the insulation resistance of motor for 1 min or 10 min through high voltage insulation tester. By this we can find the insulation level. Polarization index: This is the ratio between insulation resistance for 10 min to insulation resistance for 1 min.
Does ohms describe the difference in conduction between wires?
In regards to the capacity of a conductor, the rating is in amperage. Voltage is an insulation factor which refers to the amount of voltage that can be applied to an insulated conductor before the insulation breaks down. A break down of insulation is the main factor of creating a short circuit condition.
Why is the potential difference between two points in a good conductor so small that it can be neglected?
Potential difference V = I R. Here I is the current passing through the conductor. R is the resistance of the conductor. In case of good conductor the resistance will be almost zero and so the product too becomes almost zero. Hence the potential difference is neglected.
What is the ohm?
The Ohm is a unit of measure of resistance to the flow of electricity. The ohm is defined as a resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere.
What is the difference between earth resistance and insulation resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
What is the difference between insulation resistance and earth resistance?
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
What is the relationship between insulation resistance and length of conductor in transformers?
when length is increased insulation resistance of cable is decresed i.e.,R is inversely proportional to L where R is resistance L is length
What is difference between insulation resistance test and polarization index?
Insulation resistance test: This test is used to find the insulation resistance of motor for 1 min or 10 min through high voltage insulation tester. By this we can find the insulation level. Polarization index: This is the ratio between insulation resistance for 10 min to insulation resistance for 1 min.
What is the difference between resistance and insulation?
Resistor is a current a insulator is a not conductive and conductors can conduct.
Does ohms describe the difference in conduction between wires?
In regards to the capacity of a conductor, the rating is in amperage. Voltage is an insulation factor which refers to the amount of voltage that can be applied to an insulated conductor before the insulation breaks down. A break down of insulation is the main factor of creating a short circuit condition.
What is fault resistance?
Not all 'short circuits' are 'dead-shorts' -i.e. the resistance between the two conductors (or a conductor and earth) is not necessarily zero ohms -especially when the insulation between them has not completely broken down. The actual resistance is called the 'fault resistance'.
Difference between a bare conductor and a insulated conductor?
A bare conductor is a conductor that does not have any type of insulation covering it. Insulated conductors (also known as coated) have a covering that protects them from outside sources.
In an electric circuit resistance is?
Resistance is the opposition to the flow of electric current through a conductor. It is defined as the ratio of the potential difference (volts) between the ends of the conductor to the magnitude of the current (amps) through the conductor.
What is the difference between an Insulation Resistance Test and a Continuity Test for Electric Cables?
A continuity test checks to ensure that there is no break in the conductors. An insulation test checks to ensure that the insulation is sound.
What material has resistance between a conductor and a insulator?
The resistance between a conductor and an insulator is: Wood, fabric, and water!
Why is the potential difference between two points in a good conductor so small that it can be neglected?
Potential difference V = I R. Here I is the current passing through the conductor. R is the resistance of the conductor. In case of good conductor the resistance will be almost zero and so the product too becomes almost zero. Hence the potential difference is neglected.
