Answer / chinnaraj eee

While designing any type relay we have to consider only the
current through the operating coil of the circuit breaker
and NO & NC contacts of the relay. i.e, only it will sense
the current flow a.nd fed to circuit breaker which results
interrupting the current flow in the line.

Answer / appurao. s

For the Over Current Relay, (Mostly CT operated)it will be considered the Ct secondary current either 1A or 5A depends on the system design. Mostly today's digital relays are having the option to select between the range.

Also the time for interrupting the flow of current when the over current phenomena arises. Time setting will be range bound, so that the user can decide.

Answer / manoranjan mishra

While designing any type relay we have to consider first
the current setting of the breaker which is sensing to
relay operating coil.if it take more than its rated current
then it trips the relay which is connected to equipments.

what is reverse power relay brief explanation and in b/w where it is connected

0 Answers  

---

when elecromagnatic waves are propogated in a wave guide?

0 Answers  

---

What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

0 Answers  

---

star delta connection used in reduce the starting current at 3 times . how its reduce the current please explian .

7 Answers   HP,

---

cb used in railway applications is?

2 Answers   NTPC,

---

explain safety measures in alternator?

0 Answers  

---

why we are using KVA rating for transformer,not KWh rating?

5 Answers   NTS,

---

1500Ah VRLA battery,if its weight is designed 125kg during maufacturing its weight is reduced to 85kgs,What will be impact on AH capacity,life & economy?

0 Answers   Bajaj,

---

What mean power grid fail. why power grid fail.

1 Answers   Intas, Tech Mahindra,

---

Explain how Hormonics will effect the Electrical System?

5 Answers  

---

What happened when a three phase induction motor work on two phase supply.9

6 Answers  

---

why the starting current of a motor is high?

3 Answers   ITC Infotech,

---