Answer / ranjit singh

1. Buchholz Relay
2.Over Current Relay
3. Earth Fault Relay
4. Winding Temperature Relay
5. Oil Temperature Relay

Answer / vipin chaudhary

1.Buchholz Relay
2.Over Current Relay
3. Earth Fault Relay
4. Winding Temperature Relay
5. Oil Temperature Relay
6. differential protection for internal fault

Answer / mukesh kumar

1.Oil Surge Relay
2.Pressure Relief Relay
3.Buchholz Relay
4.Winding and Oil Temperature Relay
5. Differential Protection (for Internal Fault)
6.Buchholz Relay
7.Circulating Current Relay
8.Residue Earth Fault

we have 3*1 MW generator one NGR is common for all it will be selected during paralle our problem is two generator ca be paralled but when slecting third one we need to close NGR selection on third one other wise voltage not matching why?

1 Answers  

---

If i want to build 230kv substation what are the equipments to be installed?

7 Answers  

---

what is the difference between ups & inverter

4 Answers   Cushman Wakefield, Dana Group,

---

Why the pointer of earthing of 3 pin top is made thick and long compared to the phase and neutral pin ?

3 Answers   Sanima Hydro Power,

---

what is the sludge current

0 Answers  

---

WHAT IS THE DIFFERENCE B/W BUSHINGS AND INSULATORS? WHAT IS THE CREEPAGE DISTANCE ?

3 Answers   TCS,

---

which protection are used for turbo generator in thermal power plant.

1 Answers   Grasim,

---

What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

0 Answers   Mind Tree,

---

What are the different types of VVVF Drive ?

2 Answers  

---

WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?

0 Answers   KPRS, L&T,

---

why the single phse machine can not run by the three phase supply.

2 Answers  

---

specific difference of ICT&Auto Transformer

0 Answers   TNEB Tamil Nadu Electricity Board,

---