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低压开关柜系列
Low-Voltage Switchgear Series 青 岛 特 变

The design of the device meets the following criteria
低压动力配电柜
IEC439-1 low-voltage switchgear and control equipment;
GB7251 low voltage switchgear; Low-voltage power distribution cabinet
ZBK360001 Low-voltage withdrawable switchgear.
XL-21

产品概述 / Product overview 结构特征 / Structure

XL-21 低压动力配电柜 , 适用于发电厂及工矿企业中，在交流电压 XL-21 低压动力配电柜系封闭式，外壳用钢板变制而成，刀开关操作
500 伏及以下的三相四线系统作动力配电之用。 手柄装于前右柱上部，可以作为切换电源之用。配电箱前面装有一只
电压表，指示母线的电压。配电箱前面有门，门打开后配电箱内全部
XL-21 低压动力配电柜户内装置墙安装，屏前检修。
设备敞露、便于检修维护。本配电箱用用国内自行设计的型组件，具
XL-21 low-voltage power distribution cabinet for power plants and industrial 有结构紧凑，检修方便，线路方案可以灵活组合等特点。配电箱除装
and mining enterprises, the AC voltage of 500 volts and below the three-phase
four-wire system for power distribution purposes. 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，
箱前门可装操作按钮和指示灯。
XL-21 wall means within the low-voltage power distribution cabinet door
installation, front panel overhaul. XL-21 closed-end and low-voltage power distribution cabinet, shell steel plate
change from the system, knife switch operating handle mounted on the front
right column section, it can be used as a switching power supply purposes. Front
型号含义 / Model and meaning distribution box is equipped with a voltage meter, indicating voltage bus. Distribution
box in front of a door, the door open all the equipment distribution box Chang Lu,
X L 21 □ easy repair and maintenance. The distribution box with the use of domestic self-
designed type components, with a compact, easy maintenance, line scheme
can be flexibly combined features. In addition to distribution box is equipped with
air circuit breakers and fuses as short-circuit protection, but also equipped with
方案号 contactors and thermal relays, box door can be mounted operation buttons and
Scheme No. LEDs.
设计序号
Design No.
动力控
Power control
控制箱
control box
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