Answer Posted / srinivasa rao talasila

There is a formula to calculate capacity of capacitor
required for a certain inductive load in KW
KVAR=KW*(Tan of running PF angle-Tan of desired PF angle)
Per suppose my plant is running 0.84 i need to take it to
0.98 at a load of 800KW

KVAR=800*(Tan 32.86-Tan 11.48)
KVAR=800*(0.6459-0.2030)
KVAR=800*0.4429
=354.32 say 355KVAR

for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

1964

---

How we can calculate the life of Lead acid battery

1787

---

When will you multiply and devide with derating factors to the actual value while sizing the cable?

1945

---

what is accuracy ? in any meters , coils accuracy . how can u defined that ?

2426

---

what is value of Jin transformer

2100

---

This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

2480

---

What is synchro?

1171

---

why burdens of VTs is more than CTs?

1795

---

What is the meaning of dedicated earthing?

2172

---

How the annunciator works ? How to do its wiring

2302

---

I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.

2459

---

How can we convert 11 kv to 440 volt without using transformer ?

1433

---

What is I to C?

2155

---

I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?

2065

---

What is Anemometer used to measure?

1127

---