Answer / jadhav padmakar

DGA Means Dissolved Gas Analysis. While in service
Transformer undergoes various termal,chemical,electrical
stresses due to that some gases generated these gases known
as Fault gases which r quantitified in extremely low level
in Parts Per Million (PPM), the test which is conducted to
analyse these fault gases known as DGA Test.

Answer / pundlik wanwe

Transformer oil is a mineral oil. It is either parafinic
based or napthaline based. Oil contains the hydrocarbons.
When the oil get heted depending upon the temperature rise
oil gets decomposed and gassed begins to evolve.
To analise the composition of the evolved gasses the method
used is called Dissloved Gas Analysis.
Evolved gasses involves Hydrogen, Carbon monoxide, carbon
dixoide, methane, ethane, ethelyene, acetylene etc.
The samples oil is used to pass through the gas
chromatography where as per the temerature rise gasses
evolved can be seen as a spectrum band.
This method is a nice tool to judge the condition of oil in
transformer subsequentely that of transforrmer winding
insulation.

Answer / anil kumar

DGA Means Dissolved Gas Analysis. While in service
Transformer undergoes various termal,chemical,electrical
stresses due to that some gases generated these gases known
as Fault gases which r quantitified in extremely low level
in Parts Per Million (PPM), the test which is conducted to
analyse these fault gases known as DGA Test.

How do we calculate the resistance per metre of single core aluminium stranded cable 19*3.25mm sheathed in pvc,at 15 deg C temperature?

0 Answers  

---

What is power transformer?

3 Answers   Welspun,

---

What is the function of electron gun assembly used in crt?

0 Answers  

---

What is YNyn Transformer? and what are the other types in this?

3 Answers  

---

is high voltage or high current is danger

16 Answers   L&T,

---

Why the wave trap is put in Y phse only in switchyard?why not in other phases?

1 Answers   IAG Automation, REL,

---

HI....HOW CAN BE MESARED THE VALVE OF NEUTRAL GROUND RESISTOR WHIC IS LOCATED AT SWICHGEAR ON GENERATOR SIDE....

0 Answers   Jindal,

---

What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?

0 Answers  

---

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

4 Answers   L&T,

---

the problem faced on star or delta winding connection??

0 Answers  

---

Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

0 Answers  

---

What is function for Load Bank test and why need to test.

1 Answers  

---