Why 3 over-current and 1 earth fault relay is used on primary side of transformer? Why 2 over-current and 1 earth fault relay in used on secondary side of transformer?

1 Answers   Adani,

---

can we run three phase motor by single phase? and what happens if we do this

8 Answers   Kirloskar,

---

How we calculate the average power factor if the one phase is lag and another one is in lead?

1 Answers   DigiTech, MCR,

---

what is the range of thermal overload and over current. Answer should be in percentage of current.

0 Answers   RMSI,

---

what clearance required for 4.5 mva dry type transformer?

0 Answers   SPS,

---

---

WHATS THE NEED OF CT INPUTFOR AN VAPM TYPE METERING PT FUSE FAILURE RELAY

1 Answers  

---

What about Reactive power.and role of that one?

7 Answers  

---

what are thw types of turbines use in biogas plant?

0 Answers  

---

In any plant or substation main incommer voltage RY - 415 V,YB - 400 V, BR - 387 V(in commer feed from transformer 11 Kv /0.415 KV) why found voltage differance in each phase? plant have not self power plant it is depend on outsource grid

2 Answers  

---

how does the thyistor work in dc drive?

0 Answers  

---

what is MC 61 relay

2 Answers  

---

for distribution line ratio of x/r 1.<0.1 2.>10 3.>1 4.<0.01

3 Answers   HAL, HPPSC,

---