what types of fault occurred in transmission line ? which protection function senses the fault?

1 Answers  

---

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 VCC?

1 Answers  

---

why neutral is neccessary?

7 Answers  

---

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

0 Answers   ABC,

---

---

I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?

1 Answers  

---

what is the difference between linear choke and suction choke?

0 Answers   BARC,

---

What happens instead of using 3 phase, if we give loop of single phase to all three phases ??

1 Answers  

---

What are the different types of circuit breakers?

3 Answers   IOCL,

---

Why alternators are designed at 0.8 pf lag?

3 Answers  

---

How i can select current transformer and meters for the upgrading the panal..for 200kw to 600kw....i need to select monitoring and protection ct,s and apmpire meter ,kw meter too.

1 Answers  

---

What is the starting current of a motor?

3 Answers  

---