Answer / virendra joshi

Dear friend ,

Transformer is a heart of the electrical system & that is
the reason it required more care.

Daily :-

Check the Oil level in Conservator.
check for any leakage in transformer
Check for any abnormal sound
check for Colour of silica gel.
Check for any air in Bucholz realay , if found realease
with the air vent provided in the relay.

Yearly.

Check the Dielectrica strengh of oil , filter it & if
required replace it.

Check the earthing value of a Earthpit if required topup
with salt & water.

Check the tighness of the connection both the way Primaty
side & secondary side.

Clean the transformer yard throughly.

If required lay the granuals in the transformer yard.

By proper shut down manually check the tripping point of HT
breaker tripping set points like ( OT, WT & Bucholz Relay )

check the secondary side voltage as per desired voltage &
if any missallign found adjust with the tap changer.


please revert if any quarry exists.

Answer / tariq

in onload u cant do any test except temprature and sudden
pressur or oil level in conservator.oil leakage,cileco gel
colore for moisture,but in offload u can some more test
also.if u send ur question in detail may b i can help u

Answer / shivakumar.s

Which type of T/F ? Tell me first.

Answer / thyagarajan

checking of oil level in seal
reconditioning of silica gel
cleaning the bushing
check temp alarm
meger
check oil level in oltc, conservator

Answer / dr reddy's corporate offi

hai
1)take first permission from client & hod
2)switched off the brekers
3)rack out brekers applied loto kit
4)chek primary winding bushes & secondry winding bushes
5)chek silcazel colour(breather)
6)chek oil level & density of oil(resistance)
7)primary winding , secondary winding & core bolts retigtend
8)warnish apply winding
9)take break down votage test
10)chek oil teperature & winding temperaure guages functiong
11)chek oltc counter daily basis
12)trail tests taken buchloz realy

why we use 50hz frequency in india why not other frequencies like 52,59,42 etc

5 Answers   INTC,

What is meant by analogous system?

0 Answers  

Hi Friends pls give information regarding BARC written test. am attending by 20-5-2008. mail me to kkumarei@gmail.com or message to 9962122264

2 Answers   BARC,

maintenance parameters of sewage treatment plant

1 Answers  

In Panels Main Incomer considered should be TPN or FP?

2 Answers  

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

0 Answers  

what is bus PT ?

4 Answers  

why the starting current of a motor is high?

3 Answers   ITC Infotech,

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

0 Answers  

What is miller crystal oscillator? Explain its operation?

0 Answers  

Can we use generator transformer as step down transformer? How?

3 Answers  

What is minimum phase system?

0 Answers