On-pillar distribution transformer with internal protection function
A technology for distribution transformers and protection functions, applied in the field of distribution transformers, can solve problems such as unguaranteed power supply quality and reliability, rising management costs, and increased probability of transformer failure, so as to avoid operation, improve the reliability of power supply, and prevent the effect of excessive oil temperature
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[0020] The pole-mounted distribution transformer with built-in protection function of the present invention, like the existing pole-mounted distribution transformer, also includes a high-voltage incoming line, an oil tank, a high-voltage winding 3 and an iron core upper yoke 4 . Its protection adopts the method of setting high-voltage backup fuse 1 and three-phase magnetic latching breaker 2 in the fuel tank, such as figure 1 As shown, the backup fuse 1 is directly connected to the insulating sleeve of the high-voltage incoming line and the three-phase magnetic latching breaker 2 , and the three-phase magnetic latching breaker 2 is connected to the high-voltage winding 3 .
[0021] The three-phase magnetic latching breaker 2 is set on the inner side of the oil tank of the distribution transformer on the column, such as figure 2 As shown, its position is higher than the top of the upper core yoke 4 of the pole-mounted distribution transformer. The oil temperature at the top o...
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