Transforming a signal without changing its frequency.(amplitude can be changed)
current increase in series operatio and transformer will b damaged
vibration of the transformer's laminated core in response to the AC magnetic field.
A transformer is a static device which is used to step up or step down the voltage in a powered circuit.
specially for high voltage operation
CONDITIONS REQUIRED FOR TRANSFORMER PARALLEL operation are.. 1. Voltage turn ratio. 2. phase sequence 3. Impedence should be same 4. polarity Hitesh
The term 'constant voltage transformer' is used to differentiate the operation of transformers that are intended to change voltage levels, from those intended to change current levels -a current transformer (CT), for example, is termed a 'constant current transformer'.
A: Transformers are designed for the maximum voltage they can sustain in operation a lower voltage operation should not bother them
an REF relay (restricted earth fault) is used to provide ground fault protection for a transformer. Its' operation is limited by CTs starred towards the transformer (usually on the transformer bushings or in breakers used to isolate the transformer), so it will only operate for transformer related faults. Because of this, it can be set to operate very quickly.
To stept up or step down the voltage of transmisson of electricity.
To reduce heat generated and eddy current losses in transformer's core during operation.
In general, the lower the frequency of operation, the more weight must be added to the core laminations to avoid magnetic field saturation. This increases the size and weight of the transformer as the frequency decreases.
It enables an existing transformer to be upgraded to meet an increase in load, without having to remove that transformer and replace it with a 'larger' (expressed in volt amperes) one. It provides an useful way of using up a stock of smaller transformers.