RN-QY High temperature of the Baptist used electrified railway traction transformer

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RN-QY High temperature of the Baptist used electrified railway traction transformer

As for the 220KV power grid capacity, the effect of the negative harmonic sequence caused by the 220KV single phase traction and to the 220KV power grid is very small. The power supply system of the 220KV is more reliable and stable. The single phase electricity supply is more in line with the characteristics of that of the railway station. That is, easy protection, small investment, and effectively reduces the operating cost. As the development of our economic and power system, the 220KV single traction power supply is the inevitable trend. The connecting group of the transformer is I-I way, and the internal wiring can be in series or parallel according to the capacity or the requirements of the users.

functional
use condition
applied range
picture
certification

1. The iron core applies the high permeability grain oriented silicon steel sheet, 45° wide ramp joint, five step lamp, no binding structure and therefore reduces the technology loss, the no-load loss, and it has the features of low no-load current and low noise.
2. It applies the double-winding and double-division structure, and the two parallel wires of the high-voltage network is the extension triangular link, it changes the triangular linking way and then can achieve the +7.5° or -7.5° phase-sitting.
3. the coil of the net side applies the H-class conductor with the short class-reinforced and the H-class epoxy resin vacuum casting, and then the wire is cured after the high temperature baking and therefore it has high mechanical property and good resistance of short-circuit.
4. The two pair wires of the low-voltage network are the axial division, and one group of coils is the triangular link and the other is the star linking. The coil of the valve side is foil structure, the MKM copper foil of German, the prenatal SHS material as the inter-layer and the top insulation. The copper wire row and the copper foil apply the special welding way and the whole wire cured after the high temperature baking.

the upper altitude is 1000m
the environment temperature should meet the standard of GB6450-1986
humidity is lower than 95%