PROTECTION RELAY SYSTEM STUDIES WhatsApp Group
Join the problem-solving WhatsApp group to get your answer: https://elec-engg.com/whatsapp-group-for-protection-engineers/ – There was a 5 MVA newly installed isolation transformer having ABB make REF615 relay connected to it.The problem was whenever the transformer was charged Relay SEF protection operated. When DR files were investigated, there was a huge unbalance current flowing during the charging of […]
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