Answer Posted / dr. s.r.krishnamurthy

If a fault occurs at say 98%th portion of generator phase
winding reconed from the phase terminal, the voltage
induced in that balance 2% winding is not sufficient to
drinve a fault current through the differential relay.
Hence intentionally 100% protection relay is not used.

What should be the protection scheme for a 15kw, 3-phase motor working in a lathe machine.

2048

---

explain transformer ct connection?

2041

---

In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1944

---

How to measure size of cable on a given load

1817

---

What is the universal motor?

1095

---

why we use circuit breakers for switching instead of normal switching device?

1858

---

induction 3 phase motor terminal connection

2640

---

What is the difference between Encoder and Resolver?

3504

---

1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1877

---

What is a surge supressor why its is used in synchronous generators

1995

---

What is trip and closing coil in cb? Why need of them

1498

---

In CTs tan delta point should be earthed , what is the reason behind it?

3009

---

how i can calculate the size for fire cable

1997

---

is it value of power factor is more than unit. whats effects in the source supply

2056

---

how to decide no of electrodes for 1600A LT Main incomer panel

1634

---