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ELECTRIC, WITH AN EDGE
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ELECTRIC, WITH AN EDGE
The three high-voltage windings U1U2, V1V2, W1W2 and the three low-voltage windings u1u2, v1v2, w1w2 of the three-phase transformer are respectively connected to form a star or delta. The primary winding is a three-phase transformer connection power supply, and the secondary winding is connected to a three-phase load.
| Connection method | High voltage winding | Low voltage winding |
| Star with neutral | YN | yn |
| Star without neutral | Y | y |
| Triangle | D | d |
Three-phase transformers specify five standard connection methods: (Y,yn), (Y,d), (YN,d), (Y,y), (YN,y).
Three of the most commonly used are:
(Y, yn): Mainly used for three-phase distribution transformers;
(Y, d): Mainly used for power supply system (downhole lighting);
(YN, d): High voltage, ultra-high voltage power supply system.
Star line (Y type) delta (D type) connection mode of phase transformer winding
Yyn0 connection mode: connect the tail ends of the three coils together, the first end leads to the connector, the number of points is 12 points. Dyn11 connection mode: A head—-B tail, B head———-A tail, C head——–B tail The number of points is 11 points.
The connection group of epoxy dry-type power transformer is generally Dyn11, and the connection group of oil-immersed power transformer is generally Yyn0.
What is sbi crypto mining? sbi crypto mining is a division of Japan’s SBI Holdings Group, which specializes in cryptocurrency mining. sbi Holdings is a
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