High-voltage ring main units (HV RMUs) are designed to improve power supply reliability, allowing users to obtain power from two directions. Typically, the power supply network is connected into a ring structure, and this power supply mode is referred to as "ring network power supply" for short. In AC 10kV power distribution systems such as industrial and mining enterprises, residential districts, ports, and high-rise buildings, due to the small load capacity, the high-voltage circuits are usually controlled by load switches or vacuum contactors and equipped with high-voltage fuses for protection.
What is the function of high-voltage ring main units? Let's take a look together: In addition to supplying power to the local substation, the high-voltage bus of an HV RMU also needs to carry the through current of the ring power supply network (i.e., the current that supplies power to adjacent substations through the bus of the local substation). Therefore, the cross-sectional area of the high-voltage bus of the HV RMU should be selected based on the sum of the load current of the local substation and the through current of the ring network to ensure that the high-voltage bus does not operate in an overloaded state during operation.
As for the price of high-voltage ring main units, it mainly depends on the internal components. Prices vary according to different brands and specific models. Generally, quotations for ring main units are determined based on these factors. With detailed drawings, an accurate price can be quoted, but the general price can be settled within tens of thousands of yuan. Huasheng Electric is a manufacturer of high and low-voltage complete sets of equipment, with more than 20 years of production experience, and its products are characterized by good quality and high cost-effectiveness.
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