Answer / vinaysuper2000

UPS Incoming supply Delta connection & Out put supply star
connection.

Answer / logesh kumar.a

the input given system has star connection .so it has 3
phase & a neutral

Answer / anusree

ups system is a delta star connection , secondary side
grounded in order to allow the flow of zero sequence
currents

i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection

0 Answers  

---

how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

---

what is cathodic protaction?

0 Answers  

---

we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

---

what is difference between short ckt and overload?

6 Answers   Siemens,

---

---

What is PIR (pre inserting resistance) in 400kv EHV SF6 BREAKER? Why it use?

1 Answers   Adani,

---

Is there any option to replace two Genset of capacity 125KVA with one higher capacity for same office?

8 Answers  

---

What are the commonly used schemes for the bus zone protection?

0 Answers  

---

WHAT IS THE MEANING OG (li = 7 In)

0 Answers  

---

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

0 Answers   KSEB, L&T, Siemens,

---

What is the value of 3 phase voltage?

8 Answers   RECPDCL,

---

What is Load commutation and how it is done?Cite some example where this type of commutation is used

2 Answers   NTPC,

---