Answer / nur.asidik

knee point voltage is only for protection, not for measurement, it is depend on your protection you need,for example, 87 need higher Vkp than 50/51, just follow your relay requirement. I mean your CT Vkp should higher than Relay required Vkp. refer to IEC, for class 5P or 10P, Vkp is as a function of ALF, Rct, VA, and secondary ratio of CT

why designer use kva rating instead of kw in transformer rating???????????????

9 Answers  

---

What is difference between start imitation and start interlock for 3 phase motor protection ?

0 Answers   Siemens,

---

What is Biased Generator Differential Relay?

2 Answers  

---

Why battery rooms painted with dark colour

1 Answers   BAL, MSETCL Maharashtra State Electricity Transmission Co Ltd, Polycab,

---

Hi, i want to know is meant by power quality? How it can calculated ? How we can improve?

1 Answers  

---

what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

0 Answers   Wipro,

---

if its possible for step up or step down DC volage directly ? possible means how we can do it ?

5 Answers  

---

what is the purpose of ignitor in lighting fixer

1 Answers  

---

How dc generators direction can be reversed ??

2 Answers   GPSC Gujarat Public Service Commission,

---

1.ZEBRA conductor(large size) 2.KUNDHA conductor( small size ) 3.panther conductor(very small ) 4.lepard conductor (very very small)

0 Answers  

---

How to measure current and voltage in an ELV circuit

0 Answers  

---

what are the method of testing of transformer??

2 Answers   NCC,

---