Answer / spb

i couldn't understand your question boss.... please mention clearly... i have lot of experience in CT & PT....

what is the response time of relays when a FAULT OCCURS IN A POWER SYSTEM?

2 Answers  

---

what is electricity

3 Answers   APGenco,

---

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

0 Answers   Sandhar,

---

Why Hg means mecuiry used in vaccum mesuring unit?

2 Answers   Manhattan,

---

Where do we adjust the setting of thermal over load relay & how cal calulate.

1 Answers   Hilton,

---

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

0 Answers  

---

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

0 Answers  

---

Why not instal the NGR in 11kv/433kv trasformer?

3 Answers  

---

We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

---

If the maximum demand is 120 KVA in a building, then what is the Current taken according to load given ? Formula for it ?

3 Answers  

---

Explain the working of any one cutting machine

0 Answers   Mahatma Gandhi University,

---

What is Engine?

6 Answers   HSL,

---