Answer / viraj

all are used to protect electrical equipment
in normal conduction all works as close switch but in abnormal condition they become open
vcb acb and sf6 are used with relay
vcb vaccume is used for arc removal
acb air is used for arc removal
sf6 sf6 is used for arc removal
mccb molded case circuit breaker to limit current

what is diffrence between neutral and earth wire

23 Answers   Bhel, Esab, MTNL,

---

how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.

0 Answers  

---

what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

0 Answers  

---

what is preventive maintenance? and what is predictive maintenance? and what diffrence both?

3 Answers   Volkswagen,

---

What is vcb?

3 Answers  

---

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

---

what are the safety measures of induction motor?

0 Answers  

---

total numbers of earthing of a transformer

1 Answers  

---

details of oil cell size of Breakdown voltage test of tranformer oil details as per Standardswith mushroom electrodes?

0 Answers  

---

What is meant by short-pitched winding?

0 Answers  

---

what is second harmonic, how is effect transformer ?.

2 Answers   DEWA,

---

Ohms law explain

1 Answers   Hetero,

---