Answer / raghavendran.r

Distance protection relays work on the value of Z = V/I.
Whenever there is a fault, the value of I increases and
thus the value of Z is reduced.It is by this vakue of
impedance the relay senses the distance of the fault from
its location.
It is also called as Ohmic method of Protection.

Answer / siva

The Power transformers inner and incipient faults are
identified by the Bacholtz relay.but the Faults which are
occurring outside the transformers are detected by the
Distance Protection relays.

the Distance protection relay operates on the principle of
Differential relay,and it is acted with reference from the
CT's and PT's Which are Connected on both the End of the
Transformer.

Why A.C. capacity given in Ton. Ex. - 1.5 Ton

4 Answers   Samsung, UltraTech,

---

we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

0 Answers  

---

If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines

0 Answers  

---

tell me some type of questions throught which i can prepare for exam and do my best

0 Answers   Jindal,

---

what is Over current, earth fault (O/C+E/F) ?

2 Answers  

---

Spacing of Transformers ratings are 10kva,15kva,25kva,63kva,110kva,150kva .........so on Q) Why transformer are not manufactured having ratings in between or other than these standard ratings ?

3 Answers  

---

what is different between auto transformer and vriac

4 Answers  

---

please explain to me how to calculate current,voltage,resistance with formula??

0 Answers  

---

what is the difference between capacitive and resistive voltage divider?

0 Answers  

---

diffrence between windings of high tension side and low tension side of transformer

1 Answers  

---

what is the function of a circuit breaker ?how does the circuit breaker function during normal operation of an electrical system

2 Answers  

---

how to find the voltage drop

1 Answers   Sharjah Electricity and Water Authority SEWA,

---