Topic :: Insulation





Insulation Interview Questions
Questions Answers Views Company eMail

Why insulation layer of a High Voltage cable is more than a current carrying cable?

 3 4437

transform oil how going to act like ainsulation purpose

Siemens,

1 3350

Type of cable insulation?

Essar,

3 5210

one cable insulation resistance 200 mega ohm. how find 250 meter cable resistance.

NTPC,

2 6806

why insulation cost is more in underground cable than in overhead line?

 2 2477

what should be the value of helathy insulation b/w two cores of LT cable.

 2 3502

what are the insulation properties.

Cable Wireless, MAHINDRA,

2 4815

how to find insulation resistance of a motor(415v) by theoretical formula??

 2 6335

What are insulation classes? Tell examples of each of them.

IOCL,

1 3266

what is insulation percentage of motor 3 phase and singlephase

Infotech,

1 4519

Meggering minimum acceptable Ohms for insulation resistance.

TATA, Wood Group,

1 2405

How to improve insulation resistance of Motor

2 6911

Is there is any hazard to insulation of 3hp motor 5 KV megger is used for it?

 1 3069

what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable

 1531

why we are using mineral wool as insulation material than glass wool , in india?

 1540



Related Topics


Un-Answered Questions { Insulation }

What is the meaning of Insulation H for transformers????

1616

7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1777

does any one know where we can purchase insulation oil for high voltage oil filled cables

1859

-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.

1579

The D.C. spark test is applicable to single conductor cable & assemblies of insulated single conductor cables without insulation shield,metallic sheath or metalic armor?

1410




Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

1653

what are the basic insulation levels & what its Unit

1493

What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

1491

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

1584

Which Class insulation is prefered for the sandwich Busducts ? Why?

1561

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1744

WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

1509

how can motor both beasrings insulation resistance can be check?

1557

what is program data insulation in dbms?

1920

Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

1689