Structure and function of ring main unit/switchgear The ring main unit/switchgear is mainly composed of the following parts: Current display: including pointer ammeter or digital ammeter. Switch operation positions: load switch and grounding switch. Live display: Live display for incoming and outgoing lines. Observation window: used to observe the situation inside the cabinet. Cabinet: including circuit diagram and nameplate, etc. The core part of the ring main unit/switchgear adopts load switches and fuses, which realize the supply of high-voltage power to the transformer through the connection or disconnection of the load switch, and provide overload and short-circuit protection for the line through high-voltage insurance. Application scenarios of ring main unit Ring main unit is commonly used in ring power supply systems, which can achieve ring power supply and terminal power supply, and is suitable for various distribution needs. Its simple structure, small size, and low price make it widely used in distribution stations of load centers such as urban residential areas, high-rise buildings, large public buildings, factories, and enterprises. Advantages of ring main unit Simple structure, small size, and low price. Can improve power supply parameters and performance. The power supply is safe and reliable.
