Answer / pradhyumn

Buchholz relay is installed between the pipe connecting the
main tank & conservator. It indicates about the incipient
(initial) faults like insulation failure, core heating, and
fall in oil level due to leakage joints.
During initial faults when oil in the main tank decompose,
hydrogen gas is produced as result whose volume is more
than 70%, so this gas as result of being lighter tries to
escape to the conservator which is at the top, but gets
caught in the buchholz relay, where when determined amt. of
gas is accumulated, it gives the alarm of gas surge.

During major faults when enormous amount of gas is
released, this causes the oil surge which enters the
buchholz relay & thus due to this oil surge the causes the
circuit to trip as this being the major fault.

* Used in oil and gas surge protection.(plz. forgive
spelling mistakes.)

we have amp, voltage, kw, length detail then how to calculte copper & alluminium size of conductor of 3-phase induction motor

0 Answers  

---

what will happen if the secondary of current transformer kept open....

11 Answers  

---

what is the UPS

4 Answers  

---

Is this possible to synchronize the two different ratings of dg

1 Answers  

---

What will happen if twice the rated voltage is applied to a DC motor?

4 Answers   Toyota,

---

how was your last weekend.

0 Answers   HCL,

---

why transformer comes only in standard rating like 11kv,33kv,66kv....and not like 33.33kv and so on?

3 Answers  

---

I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com

0 Answers   AAI Airports Authority Of India,

---

what are the various parts of airconditioning system used in train and its working

1 Answers  

---

how to select the double earth conductor if 21A full load?

0 Answers   L&T,

---

why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.

0 Answers  

---

WHAT IS THE FULL FORM OF CABLE TYPE-AYWY,AYWAY,YWY ?

6 Answers   Polycab, VIR, XLPE,

---