Answer / meka sekhar

three phase over laod relay can also be used for single
phase also. In this case, three overload relays shall be
wired in series with single phase circuit. The current
flowing through this relays will be detected whenver over
current flows and trip the breaker.

Answer / karna

In Three Phase relay Three terminals are there , use two
terminals in series with phase and one terminal for
Netural . Why we are connecting like these because balance
current will flow in the relay, then only if any fault(
O/L, E/L) occur it will trip

What is the Power factor of DC Power system ?

9 Answers  

---

why dc source used for HV breakers and Relays operation?

2 Answers   Cethar,

---

Transformer TTR test procedure

2 Answers   Descon,

---

What is a Servo Stabliser.

2 Answers  

---

What is the d/f b/w MCCB & MCB

6 Answers   ABC, LMN,

---

how to calculate earth fault relay current and CBCT ratio

0 Answers   ONGC,

---

what is meant by 3rd hormonics ?

0 Answers  

---

Is it weather conditions make any problems to the electrical equipments and if yes means is it any precautions needed?

1 Answers   Hexaware,

---

what is polarity in ac system? and how do identified?

1 Answers  

---

when giving a supply to wounded coil it will get magnetised, but the same is not if it is not wounded on a core..and it is getiing short....why.......

3 Answers  

---

What is the difference between Earthing and Neutral?

13 Answers  

---

how to synchronize 4 nos. of diesel generator sets of different capacity (kva)?

7 Answers   Bhel,

---