Answer / Nikesh Gupta

A pole discrepancy (PD) protection scheme is used to protect a power system from ground faults. It works by comparing the current flow through two poles of a transformer or generator, and trips the circuit breaker when an imbalance is detected.nnIn a PD protection scheme, current transformers are connected in such a way that the current flowing through each pole is measured separately. If the current in one pole exceeds the current in the other pole by more than a predefined threshold, the relay trips the circuit breaker to isolate the faulty pole.nnThis scheme is effective at detecting ground faults and reduces the risk of nuisance trips caused by momentary or insignificant earth faults.

Why we use circular(Stepped) cross section in transformer core?

1 Answers  

---

How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

1 Answers  

---

what is the benift of HT metering & LT metering

1 Answers  

---

State magnitude criterion.

1 Answers  

---

what is the meaning of DY-11 Z-5%

1 Answers  

---

wht is an AVO metre. and whre it is used?

1 Answers   Mayflower,

---

Can we use the Poly Phenly Sulphide instead of Poly Phenly Ether? Do clarify your opinion.

1 Answers  

---

hi there i am highly enthusiastic about discussing electrical concepts , and hence i wud lyk to invit al do intrested to join me at gtalk and hav a dscussun of the concepts , ad me as a freind . my email id is rakesh.2k99@gmail.com

1 Answers  

---

What Is Sampling?

1 Answers   Mahatma Gandhi University,

---

in what type of applications v can use q meter?

1 Answers  

---

1 Sq.mm ( Aluminium Cable ) = How much Amphere ( AMP )

4 Answers   Google, TATA,

---

If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

1 Answers  

---