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What is the power supply radius of low-voltage distribution transformer?
I'm telling the students the standard answer of this lesson, the teaching material of electrician operation safety training:

The power supply voltage is 400V (that is, the output voltage of common low-voltage distribution transformers). When using overhead lines, the power supply is within 100kW and the power supply distance is 250m, that is, the power supply radius is 250m. If using cable lines, the power supply is within 175kW and the power supply distance is 350 m, that is, the power supply radius is 350m. ..

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