Answer / nesalinpraju

DOL is Direct on line starter, it is used upto 50 H.P Motors
star delta connects motor first in star at the time
ofstarting then in delta for running.

Answer / pswin

I have seen in books that says DOL starters are used up to 50 hp(roughly 37 kw). In my project in singapore, 19 pumps of 160 kw are all start by DOL.(May not start all in one time). It is equal to 214 hp each.

Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.

0 Answers  

---

What will happen if we give the 3 phase supply to the rotor of slipring induction motor?

3 Answers  

---

What is difference between PLC and SCADA

13 Answers   Uflex, Vimal Fire Controls,

---

I Need standard operation procedure(SOP)for 500kva Oil type transformer oil filtration & Procedure for IR value checking.

0 Answers   Reliance,

---

define power quality

1 Answers  

---

Draw the DOL starter and star delta starter drawing?

0 Answers   Danfoss,

---

electricity board have asked me what size meter i need fitted in my garage, its a 415volt supply and i want to run six 20amp supplies tolifts and things plus ten florry lights , what kva meter do i need??

2 Answers   HCL,

---

why voltage drop will occurs in 3 phase line?

12 Answers   ABB, Servo,

---

why does same amount of current flow in the circuit inspite of any number of resistances in the circuit?

3 Answers  

---

highest rating of alternator used in india

1 Answers  

---

what are the ratings of sockets?

10 Answers   L&T,

---

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 Answers  

---