Answer / a.p.nanjappa

Unbalanced current will develope till the upstream end
circuit breaker protection detect ( inverse time overcurent
and earth fault)and trips and isolate the fault.
The turbo alternator can run till negative sequence
charactristic constant limitation.I2t=K. Only generator
winding overheat and some time sparks,de[pends on fault.

It is also observed that major accident took place not only
damaging generator circcuit breaker pole damages,arcs and
body cabinet,arc chute burned,turbo alternater bearing
failure nted.

Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, L&T, Siemens,

---

Why C.T secondary s2 done earthing?

4 Answers  

---

As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?

0 Answers  

---

can d.c.transformer exist? if yes then what its max. rating?

6 Answers  

---

how to check 3phase motor winding with help of multimeter?

2 Answers  

---

What would be the steps and parameters in case if a fault occurs in transmission line at a distance far from the generating station?

0 Answers  

---

WHAT MEANT BY MCC PANEL?

4 Answers  

---

What are the advantages and disadvantes of delta and star connections in transformers and alternators?

3 Answers  

---

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

4 Answers   L&T,

---

where used of HVDS system.

3 Answers  

---

WHAT IS DIFFERENCE BETWEEN idmt and instentanous relay? is idmt is used as back up protection or else?or when instantenous relay saturates IDMT will operate???

1 Answers   BK, REL,

---

what is the applicatyons of the slipring motor and please tel me more about the slipring concept

1 Answers  

---