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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.
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How you using ref relay in transformer?
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.
Principle of operation of a double wound transformer?
they are to convert power into jeremy osborne, which in turn creates an aneesh karan
Why are iron losses constant at all loads in a transformer?
because iron loss is depends on frequency and it is constant through out the operation ...irrespective from load
What is center tap transformer?
Center tap transformer is the such kind of transformer that is made to a point half way along a winding of a transformer.
Synchronize the transformer dy11 and dy1?
synchronise means parallel operation. to do so first you must understand the winding level chaos. what is 30 deg and -30 deg. then automatically you can come to a conclusion
Why series operation of transformer is not prefered?
current increase in series operatio and transformer will b damaged
Why do you get a typical sound when the transformer is put into operation?
vibration of the transformer's laminated core in response to the AC magnetic field.
What is the operation of a transformer?
A transformer is a static device which is used to step up or step down the voltage in a powered circuit.
What the effect of switch on the no load transformer?
specially for high voltage operation
What are the condition for transformer parallel operation?
CONDITIONS REQUIRED FOR TRANSFORMER PARALLEL operation are.. 1. Voltage turn ratio. 2. phase sequence 3. Impedence should be same 4. polarity Hitesh
Operation of a transformer?
Transforming a signal without changing its frequency.(amplitude can be changed)
What is the purpose of constant voltage transformer?
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'.
Is there possible the transformer can operate below the rated voltage?
A: Transformers are designed for the maximum voltage they can sustain in operation a lower voltage operation should not bother them
How you using ref relay in transformer?
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.
What are operation of single-phase transformer?
To stept up or step down the voltage of transmisson of electricity.
Why are stripes of iron plates joined instead of using a single block of iron core in a transformer?
To reduce heat generated and eddy current losses in transformer's core during operation.
How input frequency to the transformer influences its physical dimension when using a step down transformer is used using as as a step-up transformer?
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.
