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Nowadays, Sweep FRA becomes a common measurement tool used to identify the transformer condition. The standard for this technique and how to interpret the result has been released by CIGRE and IEEE. PT PLN P3BJB is operating 787 transformers from various voltage ratios. Most of the transformers are 150/20 kV (64.4%) and there are 35 transformers operated in 500/150 kV. Each of the transformers is...
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