why do we put a transformer on soak before loading it

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How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.

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Match the following a)(X'+Y') b)X'Y' C)XY 1)NAND 2)NOR 3)Carry

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What are m circles?

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How to calculate the size of cables (all minium/copper) for a particular load

1 Answers   BSL, Galaxy Power System,

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1)how many types of earth? 2)how many types of megger and how to select that range? how much time taken for megger calibration( we r using megger)

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What is core balancing in Power Transformer. What is the affect of an unbalabce core.

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does over charging of a battery reduce its life?

4 Answers   KSEB,

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Define what is the function of anti-pumping in circuit breaker?

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In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?

2 Answers  

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Define filter?

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how to decide no of electrodes for 1600A LT Main incomer panel

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