Transformers can either increase or decrease the voltage and current of their supplies or transfer the amount of power from one winding to another through the magnetic circuit without affecting their frequency.
Why is the parallel operation of transformers needed? What are certain requirements that are important before connecting the transformer in parallel?
A transformer connection is said to be in parallel operation if the primary winding of two transformers is wired to a common supply voltage and the secondary winding to a common load.
To provide load over the transformer level, two or more transformers can be connected in parallel to the main transformer. The concurrent operation improves efficiency than a single larger unit. If two transformers are paired in parallel, the cost of maintaining the repair systems is lower. Instead of substituting the current transformer for a single larger unit, it is typically economical to add a further transformer in parallel.
The transformer can be connected in cases:
There are some conditions which need to be considered before connecting the transformer in parallel operation.
It is possible to function in parallel but not optimal when the suitable conditions are not met.