Basic Electrical and Electronics Engineering: Unit II: Electrical Machines
Parts of Transformer
The various parts of transformers are Core,Limb,Yoke,Windings,Conservator,Breather,Explosion vent,Buck holz relay
PARTS
OF TRANSFORMER
The
various parts of transformers are
(i)
Core
(ii)
Limb
(iii)
Yoke
(iv)
Windings
(v)
Conservator
(vi) Breather
(vii)
Explosion vent
(viii)
Buck holz relay
Core:
It
is made up of high grade silicon steel laminations. It carry the flux, provide
low reluctance to it. It is in the shape of 'L' (or) 'I'.
Limb:
It
is vertical portion of the core and its function is to carry the windings.
Yoke:
The
top and bottom horizontal portion of the core is called yoke. Its function is
to carry the flux produced by one winding to reach the other winding.
Windings:
The
coils used are wound on the limbs and are insulated from each other the
function of the windings is to carry the current and produce the flux.
Conservator:
The
oil in the transformer expands when temperature inside the transformer
increases due to heat. While it contracts when the temperature decreases.
Breather:
Smaller
transformer are not fully filled with oil and some space remains between oil
level and tank. The tank is connected to atmosphere by vent pipe. When oil
expands air goes out while when oil contracts the air is taken in. The breather
is a device which extract the moisture from the air when the air is taken in
and does not allow oil to come in contact with the moisture. It contain the
silica gel crystals.
Explosion
vent:
It
is a bent pipe fitted on the main tank which acts as a relief valve.
Buchholz
relay:
It
is a safety gas operated relay connected to transformer. When the fault gets
developed inside the transformer, the gases are released.
Basic Electrical and Electronics Engineering: Unit II: Electrical Machines : Tag: : - Parts of Transformer
Basic Electrical and Electronics Engineering: Unit II: Electrical Machines
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