Transformer parts and functions

Transformer parts and functions

    1.Buchholz relay:
                                It is a very sensitive gas and oil operated instruments which safely detect the formation of gas or sudden pressure inside the oil transformer.
   
    2.Conservator:
                        It is used to provide adequate space for the expansion of oil  when transformer is loaded or ampient temperature changes.

    3.Silica gel breather:
                        It  sucks the moisture from the air  which is taken by transformer so that dry air is taken by transformer .


     4.Double diaphragm explosion vent:
                       It is   Used to discharge excess pressure in the atmosphere when excess pressure is developed inside the transformer during loading.
  
     5.Oil level indicator:
                                   It is used to show the oil level in the transformer.

      6.Winding temperature indicator:
                                    It is used to show the temperature of transformer winding.

       7.Radiator:
                     These are used for cooling  of the transformer oil.

     The supply voltage is connected to the primary winding the load is connected to primary winding the load is connected to the secondary winding and in the transformer core only the magnetic flex path will be established in the power transformer on load tap changer used but in distribution transformer off  circuit tap changer are used.

Electrical Direct online motor starter(DOL)

Electrical DOL starter(Direct online starter)

   The simplest from of motor starter  for the induction motor is the DIRECT ONLINE STARTER  consist  a MCCB or circuit breaker ,conductor and an overload relay for protection .Electromagnetic conductor which can be opened by the thermal overload relay under fault conditions.

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