1.Different meanings
1.1 The full name of the center cabinet is armored removable center metal enclosed switchgear. It has three layers of structure, the upper layer is the busbar and instrument room (isolated from each other), the middle layer is the circuit breaker room, and the lower layer is the cable room. Because the circuit breaker is in the middle layer, it is called armored removable center metal enclosed switchgear, or center cabinet for short.
1.2 The commonly known high-voltage switchgear refers to electrical products used for power generation, transmission, distribution, power conversion and consumption in power systems, such as switching, control or protection. The operating voltage level of high-voltage switchgear is 3.6kV~550kV, including high-voltage disconnectors and earthing switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switchgear. (Note that the high-voltage switchgear here is added with the attributive "common name" to avoid contradiction with the strict statement in the previous paragraph)
2. The fixing method is different from the switch nature
2.1 The center cabinet is a trolley-type removable cabinet and uses a circuit breaker.
2.2 High voltage switchgear is a fixed switchgear cabinet body, which adopts load switch. Ring main unit is a fixed switchgear cabinet body.
3. Their respective power distribution functions are different
3.1 The central cabinet is mainly used for high-voltage load protection; such as the KYN28 cabinet commonly referred to as the central cabinet, that is, the trolley-type high-voltage switch cabinet, which is used to protect the rear transformer or other high-voltage loads.
3.2 High-voltage switchgear is mainly used for high-voltage power distribution, dividing one or two high-voltage power supplies into multiple high-voltage power output lines.
4. The structure of the cabinet itself is different
4.1 The upper layer of th
