Answer / mangesh

In gerator syncronisation there are follwoing three steps.
we will call machine to be syncronised as incoming machine
(1) same voltage
(2) same frequency
(3) same phase angle

Scoboscope is used for syancro. also there are another
method named 2bright 1 dark and vice vrsa.

The power angle delta between induced emf and terminal
voltage determines the power transfer.

Answer / lava kumar.v

1. Run first set to voltage and frequency and switch to the main bus bar
2.connect at least 25% Load if regulation is poor.
3.set upto voltage and frequency.
4.synchronize phasing up to bus bar manually or automatically

Above mentioned points are satisfied the Dg will ready for operation
* Adjust engine power as necessary if it takes most of the power it will go out over load ,This will bring down the system.

how we can select a transformer based on a particular load. suppose we have 4 motors of rating 40 h.p , 50 h.p, 80 h.p & 100 h.p. then what rating of transformer we can select. urgent. pls reply

6 Answers  

---

Between AC generator(alternator) and DC generator which can be designed for high voltage and why?

1 Answers  

---

is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

3 Answers  

---

Explain the operation of grid connected central solar inverter ?

0 Answers  

---

how to reduce the power consumption in office ?

6 Answers  

---

What will be the size of cable required for 5.5 KW motor ( Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

2 Answers  

---

hi this toufik here. i am doing my b.e.degree.now i am in final year and supposed to do a project in this year so i thinking to control the buchholz relay using software base means checking the status of transformer oil using microcontroler, plc or scada. so can i do so...??? alz suggest me...

2 Answers  

---

why the iron chains were hanged at the back or front of the trucks earlier which were touching the earth?

2 Answers  

---

what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?

0 Answers   Apotex, Periyar Chemicals,

---

What are the factors considered for the selection of cable?

6 Answers   NPCIL,

---

STATE AND EXPLAIN SUPER POSITION THEOREM.

3 Answers   ABB,

---

if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?

0 Answers  

---