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All, Thanks for the imformation, it's very valuable. Thanks

odlanor , You are right, there should be three CT on the phases and one CT on Neutral point. Thanks

Hello, Why it is better to operate Diesel Generators near full load than operating it at low loads. Thanks

Thanks ScottyUK. Is this procedure can be applied for three winding power transformers, for e.g. transformer YN/yn0/D11 132/33/11kV. Knowing that the Nuteral CT for Restricted earth fault is on 33kV side. Can I have the shcematic for Differential test also. Thanks,

Hi, The transformer is Dyn11 33/11kV. Are one earth switch of star side should be closed and the injection should be at Delat side and are energizing one winding is enough in this case. Thanks

Hello, Kindly can any one give some information about what causing 132kv Transformer Breaker to Fail In the 132/33/11kV substation. Thanks,

Hello, In a 33kV/11kV substation, we use SIEMENS Protection relay 7UT612 for Transformer differential and restricted earth fault protection. How can we test the restricted earth fault to know that the relay is responding or not. Any information regarding testing procedure for Transformers...

Hello, Is it acceptabile to lay substation grounding mesh cupper conductor over a lean concrete of the foundation of cable trench in some places, knowing that the conductor will touch bars and there will be another layer of concrete over the conductor. Dose the cupper conductor get chemical...