0
What should be minimum insulation resistance value for 11 kV HT cable?
Wiki User
∙ 11y ago
65 meg ohm if it is 11 kv
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What happens to insulation resistance when decreasing cable length?
eat dick
What are the test for 132 kv cable?
1. phase identification test. 2. Insulation Resistance Test. 3. Conductor capacitance. 4.Conductor Resistance. 4. Outer Sheath Test.
If a cable insulation is described as rhw you would be able to use the cable for what maximum temperature?
If a cable insulation is described as RHW, you would be able to use the cable for what maximum temperature
What is allowable resistance of the cable in mergers test?
A good number on a megger test should be around 2 megohms.
What happens to the value of insulation resistance of a cable when the cable gets older?
Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What is the minimum acceptable value of insulation resistance of instrument cable?
more than 1 G ohms is acceptable. cheers
What happens to insulation resistance when increasing cable length?
The insulation resistance remains the same throughout the entire length of the conductor.
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.
What happens to insulation resistance when decreasing cable length?
eat dick
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
Define the thermal resistance of a cable?
No. Conductor resistance is. Cable insulation resistance to ground is inversely proportional to its length. The longer the cable, the more leakage path to ground; therefore, the lower the insulation resistance to ground.
How can you know that power cable need to be replaced?
you check the insulation and it is degraded,hole in it or it does not have a very high ohms of resistance,which means the insulation is bad.
Can insulation resistance of cable be checked with a volt meter?
No. A volt-ohmmeter will not check insulation. To check cable insulation you need a special device (called a megger) made for the purpose that imposes a high voltage and measures current leaks.
Why does the insulation resistance fail in a PVC insulated electrical cable?
It is becase of not meeting each other
While checking the power cable you notice broken insulation What should you do?
Replace the power cable.
