The ring main unit has excellent application performance and is serialized

2012-11-06 10:53:14 格雷诺（厦门）开关有限公司

Ring main unit has not been around for long, but it has been widely used. This is mainly because the buildings of newly developed industrial enterprises and institutions, from the perspective of power supply and distribution, are mostly medium and small in capacity. Their distribution transformers generally do not exceed 1250KVA, long-term stable power supply, and high-voltage switches are not frequently operated. For such users, the performance of the ring main unit is not perfect, but it is sufficient. With large-scale urban construction, a large number of large high-rise buildings have sprung up, and substations are often located downstairs. According to fire protection requirements, substations and distribution equipment must be "oil-free". According to the reasonable use of construction area, substations and distribution equipment should be "miniaturized", so ring main units or vacuum circuit breakers, dry transformers, and dry mutual inductors have entered the buildings. The ring main unit has a simple structure, reliable and safe operation, small maintenance, and low operating costs. Compared with switch cabinets equipped with circuit breakers, it has outstanding advantages. Ring main unit requires load switches to have higher performance and smaller size, so new load switches came into being, which in turn promoted the technological progress of ring main unit. Today's ring main unit not only has excellent performance but also is serialized, which further expands the scope of use of ring main unit.