What is spill current in protection relays?

1 Answers  

---

why does voltage generation at 11 kv?

2 Answers  

---

What is the Polarisation index value ? (pi value)and simple definition of polarisation index ?

15 Answers   Essar,

---

1.What is captive power plant? 2.What is national grid?Give brief idea.

0 Answers  

---

In three phase, phase to phase voltage is 440 Volts, but the three phase motors are designed for 415 Volt, 50 hz, why

1 Answers   Shree Ram, Shriram, Sri Ram,

---

---

why we use 50 hz frequency in india .. why not 60 hz 

3 Answers  

---

If the generator will trip, what you will do as an electrical technician in charge.

1 Answers  

---

At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.

1 Answers  

---

What is the difference between Surge protection device and Lighting arrester?

6 Answers  

---

What is eddy current & eddy current loss ?

2 Answers  

---

details of oil cell size of Breakdown voltage test of tranformer oil details as per Standardswith mushroom electrodes?

0 Answers  

---

Why Cables are always circular and not square or rectangular?

3 Answers  

---