What is function of flux in transformer?
This magnetic flux links the turns of both windings as it increases and decreases in opposite directions under the influence of the AC supply. However, the strength of the magnetic field induced into the soft iron core depends upon the amount of current and the number of turns in the winding.
Why core is used in transformers?
The transformer core provides a magnetic path to channel flux. … This is important to reduce the no-load losses of the transformer. The core is a source of heat in the transformer and as a core increases in size, cooling ducts within the core may become necessary.
Which type of flux does transformer need?
Therefore, transformer action requires an alternating or time varying magnetic flux in order to transfer power from primary side to secondary side. Since induced emf in the winding is due to flux linkage. 7. Different core construction is required for core type and shell type transformer.
What is the function of CT and PT?
CT and PT both are measuring devices used to measure currents and voltages. They are used where large quantities of currents and voltages are used. The role of CT and PT is to reduce high current and high voltage to a parameter.
What is core and types of core?
ADVERTISEMENTS: (i) Horizontal Core: The horizontal core is the most common type of core and is positioned horizontally at the parting surface of the mould. The ends of the core rest in the seats provided by the core prints on the pattern.
Which material is used for core of transformer?
The core of a transformer is made up of silicon steel. This iron core has the ability to carry magnetic flux. The property of carrying flux is called permeability of that magnetic material. Modern steels materials, used for core design, have permeability in the order of 1500 compare with 1.0 for air.
Does the flux in a transformer core increase with load?
If you connect a load to the transformer, the primary current will increase in a way to keep the core flux close to what it was without load. An ‘ideal’ transformer has its primary inductance rising up to infinity, so the unloaded (magnetizing) primary current drops down to zero.