A 3.3kV, star connected alternator has a transient reactance of 1Ω per phase and negligible winding resistance. It is protected by circulating current Merz-Price protection. The alternator neutral is earthed through the resistance of 3.75Ω The relays are set to operate when there is out of balance current of 1 A in secondary of 300/3 A current transformers. How much % of winding is protected against earth fault?
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
A 3.3kV, star connected alternator has a transient reactance of 1Ω per phase and negligible winding resistance. It is protected by circulating current Merz-Price protection. The alternator neutral is earthed through the resistance of 3.75Ω The relays are set to operate when there is out of balance current of 1 A in secondary of 300/3 A current transformers. How much % of winding is protected against earth fault?
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