Answer / thowsif_csm_emerson

Applying" a voltage, With two conductors that are supposed
to be insulated, the amount of insulation can vary
depending on the thickness of the insulating material, the
amount of moisture, or from being contaminated with an
electrically conductive substance. The insulation could be
thin in one or more spots due to improper manufacture, or
due to overheating, or due to applying excessive mechanical
force, etc. So,
Megging the insulation is intended to
check for any of these imperfections.

When the voltage is applied across two conductors that are
supposed to be insulated, the megohmmeter measures the
current that flows. If the current is lesss than the
specified amount, then the insulation is meeting the
specified minimum. If it fails the test, then there is a
problem such as I mentioned above.

Answer / er.s.ramkumar

Ensure the insulation throughout the cable is good or
not.during the hv test measured leakage current in the
cable is allowable means insulation also good.

what is the disadvantage of lagging power factor & why ?

2 Answers  

---

what law motor works?

3 Answers  

---

how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.

0 Answers   Webel,

---

what is the difference between metalhalide and mercury vapour lamp

1 Answers  

---

How to design the earth grid for lightning protection in an industry

2 Answers  

---

what is the value will come when megger the phase to phase ,phase to neutral ,phasae to ground ?

3 Answers  

---

if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

0 Answers  

---

We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

0 Answers   SK Engineering,

---

What is an Air COmpressor

0 Answers   DLF,

---

What Normal(Tangent) towers and Tension(Cut-point) Towers?

1 Answers   ABB, BGR Energy, NTPC, Powermec,

---

How we check vector group for a Dyn1 transformer?

6 Answers  

---

what are the 6 terminals of the motor plss give me in details

5 Answers   Siemens,

---