Selection of middle cabinet and ring net cabinet
Release time：
2022-05-18
The central cabinet is a switch cabinet used by the end user. It has complete functions and large capacity. The ring network cabinet is used to connect two power supplies or a part of the first type of switch cabinet in the ring network. Single function, small size.
The central cabinet is a switch cabinet used by the end user. It has complete functions and large capacity. The ring network cabinet is used to connect two power supplies or a part of the first type of switch cabinet in the ring network. Single function, small size. Due to their different uses, the structure and component selection are also quite different. There are many kinds of cabinets in the cabinet, which can be divided into inlet and outlet switch cabinet, weighing cabinet and transformer cabinet. In the case of using transformer cabinet, automatic protection device can be installed on the switch in the cabinet. In the event of an accident, the protective device signals the switch to trip and power off. VS1 vacuum circuit breaker is used in cabinets.
Ring body is mainly used to connect the distribution board, usually there is no protection device inside the ring body, once an accident occurs, the fuse installed in the internal overheating cut off the circuit sulfur hexafluoride load switch; Ring network cabinet has a single function, that is, it is used to connect different power components. Generally, it cannot be used to realize the control, protection and measurement of specific electrical equipment. If you really need these features, you should choose a middle cabinet.
In the power supply and distribution system, high power altimeter should be preferred over low voltage metering, and low voltage metering should be considered only when there is no way to install metering on the high voltage side. The low pressure weighing cabinet must be placed at the top. "The surface is the front side of the low-voltage incoming line and the back side of the transformer, but the weighing cabinet is the low-voltage receiving cabinet, so it must be protected by the high-voltage switch of the transformer in general, so it must be selected in the cabinet.
With the development of current power supply technology, both cabinets have improved greatly. The central cabinet is becoming smaller and smaller, and the annular cabinet has more functions. However, the central cabinet is usually used. In the end user is to control the equipment, but the price is higher, and ring network cabinet is designed to solve the problem of the introduction of the power supply and to introduce, function is simple, but simple structure, small volume, in recent years, the expanding function, especially its small size, because it is easy to install in the "box" replacement, so obtained the very good development. At present, ring network cabinet can also be used as contact switch cabinet, ring in ring out switch cabinet, weighing cabinet, PT cabinet. At present, the ring body can be installed not only load switch fuse combination appliances, but also circuit breakers.
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Yunduobao Electrical (Yunnan) Co., Ltd.
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