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1. Transformer rating: 630 kVA
2. Input voltage rating: 11kV
3. Output voltage rating: 400/231V
4. Number of phases: Three
5. Frequency: 50 Hz
6. Insulation class: A
7. Cooling method: ONAN (Oil Natural Air Natural)
8. Vector group: Dyn11
link:https://www.goodtransformer.com/distribution-transformer/630-kva-3-phase-pole-mounted-distribution.html
630 KVA 3 Phase Pole Mounted Distribution Transformer