Question { Hyundai, 8267 }

Hi All,

I am working as a Technical executive in a MNC company and
we have 1500KVA & 1250KVA T/F in our site, can you help me
that how many maintenance tests can be conducted and what
are the procedures included for the tests can you share
yours answers and also give any web address to get more
information on this

Answer

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

Question { Reddy Labs, 3631 }

what is the dedicated earthing

Answer

Dedicated earthing specially used to ups due to zero
reference signal purpose
ups load zenerally connected to data centeres
two or three computers data transmitted time required zero
reference signal
we are connected common earthing or electrical earthing
it's disturbance

Question { NCC, 4472 }

what is the chemical name for oil that used in the transformer

Answer

Hydro carbon based mineral oil