Answer / gunasekaran

Ps class ct having high saturation point metering ct having low. Ps class using for special protection like diffrential Ref Busbar protection it is very less setting than metering.metering always working hgh setting means suppose 200/1 Ct is their rated load is 180A so ct secondry current is 0.9 so it is experince less burden. but Ps clss always working maximum 20% of setting so it experince very high burden so it must be designed for high saturation point

NGR? What is NGR?

14 Answers  

---

What is the Diesel consumption between 82KVA DG Set and 180KVA DG Set for 1 hour.

1 Answers  

---

How damper winding in synchronous motor suppress Hunting?

2 Answers   Bhel,

---

1-What is the difference between absorption factor and polarization factor in insulation resistance test in transformers? and why we inject until ten minutes to get polarization factor?

1 Answers  

---

why generating voltages are of 11kv 33kv 22kv of 11 multiples

5 Answers  

---

Explain what is Zener diode?

1 Answers  

---

why abcd parameters are called transmission parameters

0 Answers  

---

Technical equations

1 Answers   ME,

---

in ONAN type transformer winding temperature is lower than oil temperature at evening time but morning winding temp is higher than oil temp what is the reason?

2 Answers   Areva,

---

How can we parallel two transformer with vector gorup YNd11 and YNd1?How is connection two transformer GT?

3 Answers  

---

How to calculate the Harmonics losses in terms of cost/unit.

0 Answers  

---

What happen in ups if phase reverse?

0 Answers  

---