sometimes, eventhough the HV side of the transformer is opened there is a voltage in LV side .How is it possible?

4 Answers  

---

How much the fault level of 11 k.v.,22 k.v., 33 k.v. (in Maharashtra- M.S.E.D.C.L) for calculation of short circuit current & selection of h.t.cable.

1 Answers  

---

what is impedance of transformer?

7 Answers   Synergy, Vijai Electricals,

---

where AVR is connected in power plant.

7 Answers   ABB, Saudi Red Bricks,

---

why C.T secondary are rated 5A generally?

13 Answers   ABC, Bhel,

---

---

234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jomel,

---

what is the purpose of the armored for the power Or control cable? How to select the type of the armored?

1 Answers   Siemens,

---

As we know multiplicity factor derivation equation is as below MF = main c t ratio / main p t ratio * meter c t ratio / meter p t ratio * meter dial constant Where in digital meters for HT kwh import export now a days meter constant are calibrated already which is 1 So my question is For HT 11kv 110 v line values are as below Main c t and p t ratio are 11000 v and 110 v and 20/5 means 20 amp and 5 amp Now meter values are 11000/√3/110√3 and primary and secondary amp are displayed as -/5 amp on kwh meter so what will be the MF for this meter ?

1 Answers   NEPC,

---

i applied for the ap transco please forward the freqventley asked QA

0 Answers  

---

What will happen if mains neutral and generator neutral shorted?

2 Answers   Betts, Suzlon,

---

The mechanical angle is electrical angle A always less than B greater than or equal to C equal to D less than or eaual to

1 Answers  

---

what will happen if the secondary of current transformer kept open....

16 Answers   KSEB,

---