What the reson for frequant instantaneous ground over current fault in our sync. Generator... 15 triping in 24 hr...

1 Answers   HCPL, Jhunjhunwala Vanaspati Jhoola, Regen Powertech,

---

What is mean by Sub Synchronous Resonance(SSR)???

1 Answers  

---

how much Amp we can put in 1200kva generator?

11 Answers   MacLellan,

---

what is use of stater and choke in tube light.?

2 Answers   Aditya Birla,

---

Dear Sirs, I am a technical persons.In one of our Electrical Sub- Station, We have installed three numbers of 1250KVA ,11KV/0.415KV Transformer to feed the Factory load. We have found some abnormality. In one of our Transformers the leakeage current from transformer body to earth through earth continuity wire is almost 86 Amp but in other transformer it is (5-10)Amp. where the load current on three phase and neutral are respectively 1360Amp,1400Amp,1370 Amp & 176Amp. So please any technical person help me about the reasons of this situation and how I can rectify the fault. Moreover,I have measured the earth resistance of the Earth continuity wire which is less than 1 Ohm. Thanks Tapas Barua

3 Answers  

---

what is the diffrence between voltage and current?

11 Answers  

---

why fractional pitch winding generally used in alternators?

0 Answers   TATA,

---

what is bus post insulator and its applications in substations

1 Answers  

---

A resistance, inductance & capacitance are connected in series between points A & B.The voltage drops across the resistance,inductance&capacitance are found to be 40V,70V&100V respectively. What is the total voltage between between points A&B (Vab)? a)210V b)70V c)50V d)230V

6 Answers  

---

What is differential relay? How it operates?

1 Answers  

---

Find defination of KVA convert in to KW.

4 Answers   ABB,

---

What is over fluxing in transformer?

1 Answers  

---