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Characteristic of 250 KVA 20 KV hermetic oil type distribution transformer

Transformer Type: S11-250 kVA-20/0.4 kV

• High voltage: 20 kV
• Low voltage: 0.4 kV
• Connection symbol: Dyn11/Yyn0/Yzn11
• Tapping range: ±2×2.5%
• Coil material: Copper/Aluminum
• Cooling type: ONAN/AN (natural air cooling)
• Voltage regulation mode: Unexcited voltage regulating
• Load loss: 3520/3350 W
• No load loss: 400 W
• Impedance voltage: 5.5 %

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