Method for setting transformer protection data
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For 10KV transformers with capacities of 630KVA and 1250KVA, how should the protection setting values be calculated?
1. Overcurrent protection, instantaneous current protection, grounding protection, and gas protection must be installed. In addition, overload protection is also required if there is a risk of overload or when transformers are operated in parallel. 2. The overcurrent protection for the transformer is calculated based on the transformer’s rated current, and the quick-break protection should be able to withstand the current that flows on the high-voltage side during a short circuit on the low-voltage side of the transformer. If the grounding protection meets the sensitivity requirements, it can be implemented using overcurrent protection. 3. For the calculation of setting values, refer to the \"Manual for Industrial and Civil Power Distribution Design\"