浙江佳怡电气有限公司

产品简介 Product introduction

XL-21 低压动力柜适用于发电厂及工矿企业中，在交流电压 500 伏及以下的三相四线或三相五线系统作动力配电之用。XL-21 低压动力柜系户内装置靠墙安装，屏前检修。

XL-21 low-voltage power cabinet is suitable for power distribution in power plants and industrial and mining enterprises, in three-phase four-wire or tn-s system with AC voltage of 500 volts or less. XL-21 low-voltage power cabinet is an indoor device installed against the wall and overhauled before the screen.

型号说明 Model description

结构特点 Design feature

XL-21 低压动力柜系封闭式，柜体由冷扎钢板或不锈钢弯制焊接而成 , 刀开关操作手柄装于柜前右柱上部，可以作为切换电源之用。动力柜前面装有一只电压表，指示母线的电压。动力柜前面有门，门打开后，动力柜内全部设备敞露、便于检修维护。具有结构紧凑，检修方便，线路方案可以灵活组合等特点。动力柜除装有空气断路器和熔断器作为短路保护外，还装有接触器和热继电器，柜前门可装操作按钮和指示灯。

XL-21 low-voltage power cabinet is closed, the cabinet body is made of cold-rolled steel plate or stainless steel bent and welded, and the knife switch operating handle is installed at the upper part of the right column in front of the cabinet, which can be used for switching power supply. A voltmeter is installed in front of the power cabinet to indicate the voltage of the bus. There is a door in front of the power cabinet. After the door is opened, all the equipment in the power cabinet is exposed, which is convenient for maintenance. It has the characteristics of compact structure, convenient maintenance and flexible combination of line schemes. Besides air switch and fuse as short-circuit protection, the power cabinet is also equipped with contactors and thermal relays, and the front door of the cabinet can be equipped with operation buttons and indicator lights.

正常使用条件 Normal use conditions

◆环境温度：-50℃ ~+40℃，且 24h 内的平均温度不超过 +36℃；

◆海拔高度：不超过 2000m；

◆相对湿度：在周围空气湿度为 +40℃时不超过 50%；在较低湿度下可以有较高的相对湿度 ( 如：+20℃时为 90%)，考虑到温度的变化允许产生适度的凝霜；

◆设备安装时与垂直面的倾斜度应不超过 5°，设备应安装在无剧烈震动、无冲击及无腐蚀的场所。

◆ Ambient temperature: -50℃ ~+40℃ , and the average temperature within 24h does not exceed+36℃ ; 

◆ Altitude: no more than 2000m；; 

◆ Relative humidity: no more than 50% when the ambient air humidity is +40 ℃ ; At low humidity, there can be high relative humidity (for example, 90% at +20 ℃ ). Considering the change of temperature, it is allowed to produce moderate frost. 

◆ When the equipment is installed, the inclination with the vertical plane should not exceed 5, and the equipment should

使用、维护和检修 Use, maintenance and repair

低压动力柜在安装或检修后，在投入运行前须进行下列各项检查与试验 ( 检修后的检查与试验，视其检修质性而定 )。

◆检查动力柜内部装设电器设备和二次接线是否符合图纸要求。

◆检查用于操作的刀开关、空气开关是否灵活，应无卡轧型象。

◆检查所装设的电器设备的接触是否良好，是否符合该电器设备的本身使用要求。

◆检查动力柜内部有无其他异物及各部分坚固螺钉是否有松动现象。

After installation or maintenance, the low-voltage power cabinet must be inspected and tested in the following items before it is put into operation (the 

inspection and test after maintenance depends on its maintenance quality). 

◆ Check whether the electrical equipment and secondary wiring installed inside the power cabinet meet the drawing requirements. 

◆ Check whether the knife switch and air switch used for operation are flexible and there should be no jamming image. 

◆ Check whether the contact of the installed electrical equipment is in good condition and whether it meets the use requirements of the electrical equipment itself. 

◆ Check whether there are other foreign bodies inside the power cabinet and whether the solid screws of each part are loose.

外型及安装尺寸 Outline and installation dimensions

注：1、以上尺寸可以任意组合 ; 2、柜体尺寸可根据客户图纸要求尺寸定制 ;

Note: 1. The above dimensions can be arbitrarily combined; 2. The dimensions of cabinet can be customized according to the requirements of customer drawings;

技术参数 Technical parameter

额定电压：400V

额定绝缘电压：690V

额定电流：630、400~10A

额定短时耐受电流：10kA

防护等级：IP30、IP44、IP54

Rated voltage: 400V 

Isolation voltage rating: 690V 

Rated current: 630,400 ~ 10A 

Rated short-term withstand current: 10kA 

Protection level: IP30, IP44, IP54

熔断器 Fuse protector

交流接触器 Ac contactor

订货须知 Ordering instructions

订货时客户应提供下列资料：

◆一次线路方案及单线系统图；

◆二次线路展开系统图；

◆每箱内所装各种电器设备详细规格及数据；

◆在订购 B 型结构时须提供动力柜的排列图和平面布置图。

The customer shall provide the following information when ordering: 

◆ Primary line scheme and single line system diagram; 

◆ System diagram of secondary line deployment;

◆ Detailed specifications and data of various electrical equipment in each box; 

◆ When ordering B-type structure, the arrangement diagram and floor plan of power cabinet shall be provided.