Resistor is a current a
insulator is a not conductive and conductors can conduct.
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.
I think you mean, 'insulation' resistance! It's the resistance of insulation, normally expressed in megohms.
The difference is the type of insulation on the conductors. Type AC used a thermoset insulation , Type ACT is a theromplactic insulation.
With Hipod leakage current of any circuit (HT Distribution/ Transmission Lines) can be determine and with IR Test insulation resistance between two circuit or parts of machine is determined.
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'.
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.
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
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
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.
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
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.
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.
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.
I think you mean, 'insulation' resistance! It's the resistance of insulation, normally expressed in megohms.
Values of insulation resistance vary according to the type of insulators and the size of the conducting material inside the insulators, for instance insulation resistance of wires or cables are determined according to type of insulation PVC-PE-XLPE-..... etc and the size of the conductor, and the standard which the wires or cables are designed upon. For example BS 5308 standard states that cables of conductors 0.5, 1, and 1.5 with PVC insulation should have a minimum insulation resistance of 25 Mohm.km . but cables with PE insulation should have a minimum insulation resistance of 5 Gohm.km ...... Now you may realize the difference in IR values. I hope I manage to make it clear image for the answer.
The difference is the type of insulation on the conductors. Type AC used a thermoset insulation , Type ACT is a theromplactic insulation.
The difference is the type of insulation on the conductors. Type AC used a thermoset insulation , Type ACT is a theromplactic insulation.