Answer / dhanesh koshti

Capacitor calculation is depends on load. if 630 KVA transformer is loaded fully with load p.f.=1 then no compansation is required but if the same is fully loaded with load p.f. = 0.8 then, kvar required is calculated as below:
KVAR = KW ( tanǾ1-tanǾ2); Ǿ1=old p.f.angle, Ǿ2=new pf angle

= 504 ( 0.75 - 0.14) [ here, KW=504 because, 630 X 0.8 = 504]
= 307.44 KVAR
say, 300 KVAR bank is required at load end for compansation

Answer / engr junaid afrid

Simply says 630/2=315 kvar for your system.

Answer / mahendra singh

KVAR = KVA * sin@
KVAR = KVA * sqrt (1-cos@*cos@)
KVAR = 630* sqrt(1-.99*.99)
KVAR = 88.87

Answer / sanjay

generally kvar depends upon 33% of full load. please suggest if i m wrong.

Why servomotor and induction motor are in different shape

1 Answers  

---

What are safety device in vcb and acb?

0 Answers   IOCL, L Usine Fashion,

---

What are the types of relay ?

3 Answers  

---

What is the function of UV coil ACB?

6 Answers   DLF,

---

what are eddy currents

2 Answers  

---

what will happen at the time of CT saturation?and what will be the Relay's function at the time of CT saturation?

2 Answers  

---

Explain Buccholz relay in detail.

5 Answers  

---

What are the protections used in a HT breaker to protect the HT motors.

2 Answers  

---

What is limitedly stable system?

0 Answers  

---

in my observation NCT is used at Karnataka power transmission. why we are not used in andhra pradesh

1 Answers  

---

We know no of electron and proton in atom but how many Neutron are thire in an atom ?

1 Answers   Power Grid,

---

We in my plant one of the transformer showing neutral to earth voltage is 22V how to solve it

3 Answers  

---