Answer / krajeshkumar1989

bus pt means bus potential trnsformer
it is used to measure the voltage in the bus and it is very important at the time of synchronising.

Answer / achita rao

IN SUBSTATION BUS PT ARE USED FOR MEASURIN HIGH VOLTAGE IN THE BUS

Answer / chetan

PT is a potential transformer which is use to meassuremet
or metering of voltages.

Answer / deadzg_devil

Because in power stations large current flows thru the
cables n for measurement of currents or any fault the
apparatus required must be highly rated n it wud be costly.
Therefore PT's are used to step down the current to lower
levels for measuring them

What is the formula to calculate the rating of a three phase trnasformer

1 Answers  

---

I want to ask a question which i faced during testing of Capacitive Voltage Transformer in AIS. We have measured the C1 , C2 individually , but when we start to measure the total C1+C2 , the testing equipment shuts down and says low loading. Kindly is it possible to find the total capacitance by using measuring device. kindly briefly explain the procedure.

0 Answers   AIS,

---

clarify types of motor operated valves and advantages

0 Answers  

---

what is difference between fuse and circuit breaker?

4 Answers  

---

1]how the voltages and frequency are achieved on ships. 2]how does the line and phase voltages are related on ships.

3 Answers  

---

what is restircted earth fault relay,how it works? what is diffrance btwn normal earth falut relay & restricted earth fault relay?

1 Answers  

---

What is the Harmonics??????????

5 Answers  

---

What is phenomenon of electromagnetic induction and how it works?

0 Answers  

---

What is Instantaneous Earth fault relay,how will work

0 Answers  

---

how the earhing is done on ship and airplane.

2 Answers  

---

which electrical supply used for long distance traction 1.1-ph 22kv a.c 50hz 2.2-ph 22kv a.c 50 hz 3.dc vtg 4.1-ph 22kv 150 jhz

3 Answers   Power Grid,

---

what is the RMU and RMU system in sub-station(11kv,66kv.....)

2 Answers   Alstom, Torrent Power,

---