Answer / jim sreedharan

NGR is neutral ground resistance. 5-10 % of full load
current passes through NGRcduring system ombalance.
Restricted earth fault current passes through NGR till
automatic protection takes place. NGR absorbs the earth
pressure and protects the transformer windngs.

God Bless

Answer / karthi

GM, I have query that how the current flow comes from leakage fault point to NGR pit? For example my motor is located far away from transformer location and the cable got exposed and severe ground fault happens thus the huge current flows in it. In that case how NGR protects the system? Also I read that NGR allows one fault and the second instance only will trip and protect the circuit, I cant get that how it is.

Can some one clarify me, Thanks

@ Karthi  

Answer / md79

Mr. Venkatesh A.

I have a 347V, 5A continuous NGR.

How can I determine how many ohms of resistor should be
used?

Thank you

Answer / mahesh.s

NGR is Neutral Ground Resistance,This value is below one
Ohm better value

why a pure inductive circuit has zero power output?

8 Answers  

---

how the percentage impedance affect the transformer loading when connected in parallel.?

1 Answers  

---

why does voltage generation at 11 kv?

2 Answers  

---

What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

0 Answers  

---

what is the voltage rating of chiller unit sensors

0 Answers   Voltas,

---

what is swirl induction in i.c engine????????

1 Answers   Ashok Leyland,

---

why current flow to the opposite direction of flow of electrons???????????

0 Answers   Bhel,

---

a solar energy installation utilizes a three phase bridge converter to feed energy into power system through a transformer of 400v/400v.the energy is collected in a bank of 400v battery and is connected to converter through a large filter choke of resistance 10ohms.1.the maximum current through the battrey will be.2.the kva rating of the input transformer is.

1 Answers   GATE,

---

I WANT YHE TECHNICAL AND ELECTRICAL SPECIFICATIONS OF 2x4MW 11KV 2x10MW 11KV 2x25MW 11KV 2x100MW 11KV HYDEL POWER PLANT i.e PROTECTION SYSTEM,MONITORING,CONTROL SYSTEM,GENERATION,SYNCHRONISATION,METERING PLEASE SEND THE DETAILS TO MY MAIL ID SPRAVEEN_222@YAHOO.CO.IN

0 Answers  

---

what is the abbreviation for F.M In FM-200 fire suppression system

1 Answers  

---

Difference Between Isolator and Mcb

13 Answers   VHB Medi Life Sciences,

---

how can we check the earth resistance

3 Answers  

---