Answer / sudheer

when one Generator is running and suppose its rating is
1500 kva/1200 kw,and load increased and we wants to put
more load on GENERATOR . So then we have to run second
generator and to be shift some load on second generator,
otherwise the generator will be over loaded and tripped on
over-load fault. when we connect two generators parrallel,
this arrangement is called synchronisation.we connect the
out-put supply of both generators parallel by
synchronisation.In synchronisation we have to match these
parameters--phase sequence, frequency and voltage.when all
three parameters match we ON the breaker and
synchronisation complete and now we can put more load
(about 2000 kw) on generator.

Answer / joshy govind

sychronisation is important when parrallel operation of two
generators or when we connect a generator to grid.
The generator supply must only be connected to a live
grid,
1. Phase angle difference
2. Voltage differnece
3. frequency diffenrence (slip)
between the generator and grid voltage are within
permissible limits and the phase sequence of both generator
and grid rotating field should be identical.

What is transformer break down voltage.And what is flash oil flash point.

1 Answers   HP,

---

what is the maximum load in MDB,SMDB and DB

1 Answers  

---

what is the difference between power transformer & distribution transformer and what are their ratings respectively?

4 Answers  

---

What is the si unit

2 Answers  

---

explain the Trip supervision circuit

0 Answers   NCC,

---

---

what is the method of electric earth for the protection of low voltage electric equipment

1 Answers   MacLellan, Shiva Corporation, Siemens,

---

Can a transformer be used as voltage or current amplifier?

3 Answers   BPDB, REB, Riaz,

---

what is V=4.44FBN, THIS 4.44 ONLY U GOT the voltage in term sof 11, 22 etc this 4.44 u will get from form factor which has a value of 1.11

1 Answers  

---

what is the voltage regulation constant of ACSR Raccoon conductor

1 Answers   KSEB, PSC,

---

what is the purpose of vector group in a transformer ? if 2 tranaformers r connected in parallel the vector group is same or not? for parallel operation 2 transformers of different manufacturers maintain same vector group or not?

3 Answers   Orchid,

---

what is the term of desruptive voltage

5 Answers   Bhel, Energy Infratech,

---

Can I use RCCB in moisture control device in a submersible pump.

2 Answers   TATA,

---