what is cable meggering formula for low voltage ?

0 Answers  

---

WHEN I AM CONNECTIN TWO ELCB IN PARALLEL.ONE ELCB TRIPPED...HOW IT HAPPEND??

5 Answers  

---

how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

0 Answers  

---

what is the difference between ac drives and dc drives?

1 Answers  

---

difference between over current and over load protection?

5 Answers   BARC,

---

how is the magnetic current test is different in delta-star and delta delta transformer.

0 Answers   Bhel,

---

Define the term Capacitance and Inductance?

0 Answers  

---

my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

1 Answers  

---

Why we use a H.T. Fuse from a thick wire, on other side we use high rating of cables? & Why we use less Sq. mm Cable on H.T. side , on other side we use Large Sq. mm cable?

1 Answers  

---

why we are called the 4-20ma transducer,not 0-20 ma transducer??

3 Answers  

---

How dc generators direction can be reversed ??

2 Answers   GPSC Gujarat Public Service Commission,

---

how to test a motor from megger

5 Answers   JSW,

---