Oil Cooling System is used for removing the heat due to
energy loss from the transformer oil cooling circuits, the
choke and the inverter. Oil Cooling System is used in
WAG9, WAP7 & WAP5 class of locomotives
manufactured by Chittaranjan Locomotive Works, India.
Two such units are used per locomotive. The Oil Cooling
Blower’s are used for cooling the oil of transformer and
three auxiliary converters that flows through the heat
The oil of the transformer flows through the radiator 1 that
is mounted under the floor of the locomotive. The oil
carrying the heat from auxiliary converter flows through
the radiator 2 that is place right above the radiator 1 of
transformer under the locomotive floor.
The Oil Cooling Blower is mounted right above both the
radiators 1 & 2 inside the locomotive such that the fresh
cooling air is sucked from the top of the locomotive by Oil
Cooling Blower through the duct connected to the top of
the Oil Cooling Blower box cools the radiators at the other
end of the box.
The Oil Cooling Blower box is connected to the roof
opening of the locomotive through a duct and cyclonic
filter at the roof. This cyclonic filter is responsible for
filtering the incoming cool air that is sucked by the Oil
Cooling Blower and this cool air takes off the heat from
the radiator fins through convection method and
escapes out from the bottom of the locomotive.
This product is a patented product of Daulat Ram and
Oil Cooling System is designed in such a manner that
the deflectors at the bottom distributes air evenly over
the entire radiator so that no high temperature points
are left anywhere in the radiator.