Answer / bala123

Megger was the combination of Ohm meter+Generator.This
instrument used for measure the high value resistance (IR
value).

Answer / khalidshaikh

1.MEGGER WORKS ON THE PRINCIPLE OF OHM;S LAW.
2.FIRST OF ALL IT GENERATES HIGH VOLTAGE THROUGH ITS
GENERATOR OR DC/AC CONVERTOR AND VOLTAGE MULTIPLIER.
3. MORE THE VOLTAGE GENRATED BY GENERATOR MORE ACCURATE THE
RESULTS.
4.IT CALCULATE THE INSULATION RESISTANCE OF THE CIRCUIT
UNDER TEST BY SUPPLYING HIGH VOLTAGE ON THE ENDS.
5. WHEN THE CIRCUIT HAS HIGH INTERNAL RESISTANCE MORE
VOLTAGE DROP AND LESS CURRENT FLOWS AND VICE VERSA.
IT SUPPLIES THE VOLTAGE AT THE RATINGS OF 1 KV, 2 KV, 5 KV
10 KV , 20 KV AND SO ON.
MORE THE VOLTAGE RATING MEGGER WILL BE ABLE TO MEASURE
MILLIONS OF MEGA OHMS AND UP TO INFINITY LEVEL.

what type of insulation is used for over head lines?

4 Answers   NTPC, WS,

---

9.The material used for coating the electrode is called........

3 Answers   SSC, TELiBrahma,

---

why 1.7Uo for HV cable Hi pot test?IE standard why?

0 Answers   ABB,

---

if the 10 hp motor name plate indicates rated current as 13.6 amp the what will be the thermal relay setting? Why? And in how much time relay will trip at the set value?

2 Answers  

---

IF ANY MATERIAL AVAILABLE IN MARKET FOR MOTOR PROTECTION INSTEAD OF OLR & CONTACTOR ?

1 Answers  

---

What is difference between wire and cable ?

3 Answers   Havells,

---

what is the load amp of a 2 hp single phase motor?

6 Answers  

---

How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

0 Answers  

---

How to check the cable fault / hv test of transformer cable.

0 Answers   KSEB, L&T, Siemens,

---

what is principle in relay testing kit?

3 Answers  

---

Name the component u would expect to find in a switchgear assembly?

0 Answers  

---

what is mathematical relation between ac to dc current how will convert Iac=50amp to Idc

7 Answers  

---