高低压开关柜在工作的过程中主要是以断路器为主的电气设备；是指生产厂家根据电气一次主接线图的要求，将有关的高低压电器（包括控制电器、保护电器、测量电器）以及母线、载流导体、绝缘子等装配在封闭的或敞开的金属柜体内，作为电力系统中接受和分配电能的装置。

　　The high and low voltage switchgear mainly consists of electrical equipment such as circuit breakers during operation; It refers to the manufacturer assembling relevant high and low voltage electrical appliances (including control appliances, protection appliances, measuring appliances), busbars, current carrying conductors, insulators, etc. in closed or open metal cabinets according to the requirements of the electrical primary wiring diagram, as devices for receiving and distributing electrical energy in the power system.

　　高低压开关柜又可称为高压开关柜，在电力系统发电、输电、配电、电能转换和消耗中起通断、控制或保护等作用。 电压等级在3.6kV~550kV的电器产品，主要包括高压断路器、高压隔离开关与接地开关、高压负荷开关、高压自动重合与分段器，高压操作机构、高压防爆配电装置和高压开关柜等几大类。

　　High and low voltage switchgear, also known as high-voltage switchgear, plays a role in power generation, transmission, distribution, energy conversion, and consumption in the power system, such as on-off, control, or protection. Electrical products with voltage levels ranging from 3.6kV to 550kV mainly include high-voltage circuit breakers, high-voltage isolating switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and high-voltage switchgear.

　　高低压开关柜的柜体宽敞，内部空间大，间隙合理、，具有安装、维修方便，运行可靠等特点，主回路方案完整，可以满足各种供配电系统的需要。其具有五种防止误操作的功能：

　　The cabinet body of the high and low voltage switchgear is spacious, with a large internal space, reasonable and safe gaps, and features easy installation and maintenance, reliable operation, etc. The main circuit scheme is complete and can meet the needs of various power supply and distribution systems. It has five functions to prevent misoperation:

　　1．防止带负荷分合隔离开关。

　　1. Prevent load on/off isolating switches.

　　2．防止误入带电间隔。

　　2. Prevent accidental entry into electrified compartments.

　　3．防止误分、合断路器。

　　3. Prevent accidental opening and closing of circuit breakers.

　　4．防止带电挂接地线。

　　4. Prevent hanging grounding wires when live.

　　5．防止带接地线合闸。

　　5. Prevent closing with grounding wire.

　　高低压开关柜的部件主要有断路器、隔离开关、负荷开关、操作机构、互感器以及各种保护装置等组成。开关柜的主要作用是在电力系统进行发电、输电、配电和电能转换的过程中，进行开合、控制和保护用电设备。

　　The components of high and low voltage switchgear mainly include circuit breakers, isolating switches, load switches, operating mechanisms, transformers, and various protective devices. The main function of a switchgear is to open, close, control, and protect electrical equipment during the process of power generation, transmission, distribution, and energy conversion in the power system.

　　高低压开关柜的结构特点表现如下：

　　The structural characteristics of high and low voltage switchgear are as follows:

　　1、整柜采用拼装式组合结构，模数孔安装，零部件通用性强，适用性好，标准化程度高。

　　1. The whole cabinet adopts an assembled combination structure, with modular hole installation, strong universality of components, good applicability, and high standardization.

　　2、柜体上部为母线室、前部为电器室、后部为电缆进出线室，各室间有钢板或绝缘板作隔离，以保证。

　　2. The upper part of the cabinet is the busbar room, the front part is the electrical room, and the rear part is the cable inlet and outlet room. There are steel plates or insulation boards between each room for isolation to ensure safety.

　　3、MCC柜抽屉小室的门与断路器或隔离开关的操作手柄设有机械联锁，只有手柄在分断位置时门才能开启。

　　3. The door of the MCC cabinet drawer compartment is mechanically interlocked with the operating handle of the circuit breaker or isolation switch, and the door can only be opened when the handle is in the open position.

　　4、受电开关、联络开关及MCC柜的抽屉具有三个位置：接通位置、试验位置、断开位置。

　　4. The drawers of the power switch, contact switch, and MCC cabinet have three positions: on position, test position, and off position.

　　5、开关柜的顶部根据受电需要可装母线桥。

　　5. The top of the switchgear can be equipped with a busbar bridge according to the power supply needs.

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