What are switchgear and ring main unit? What are the similarities and differences and connections between them? If you want to know the relationship between the switch cabinet and the ring network cabinet, start with the definition of these two components.
What is a switchgear?
Switch cabinet
In the power system, the switch cabinet is a kind of electrical equipment, mainly composed of circuit breaker, disconnector, load switch, operating mechanism, transformer and various protective devices, which is used to open and close, control and protect electrical equipment. The switchgear can also be used to disconnect the equipment. This electrical equipment is used to directly connect the reliability of the power supply.
What is a ring main unit?
Ring main unit
Ring network cabinet is a group of compact, sealed and enclosed electrical equipment with transmission and distribution electrical equipment (high-voltage switchgear) installed in metal or non-metal insulated cabinet or assembled with interval ring network power supply unit, which is applicable to medium voltage power distribution. It is a complete switchgear in itself. In the whole ring network system, if any line is interrupted or fails, the other line can continue to work.
Generally speaking, there are many types of switch cabinets and ring network cabinets. In fact, the ring network cabinet is a switch cabinet of each distribution branch. The buses of each switch cabinet are connected to form a ring trunk line, forming a "ring network". Each outgoing cabinet is called a ring network cabinet.
Based on the above introduction, do you know anything about switchgear and ring main unit? I hope this knowledge will be helpful to your future work.
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