| 详细介绍：
西门子6SL3224-0BE25-5UA0，西门子G120 功率模块 PM240，价格优势 现货销售
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SINAMICS G120 功率模块 PM240，不带滤波器，内置制动变频器 3AC,380-480V +10/-10% 47-63Hz,额定输出功率，重载功率： 5.5 KW，用于 200% 3S,150% 57S,100% 240S，环境温度 -10 至 +50 ℃, 额定输出功率，轻载功率： 7.5KW, 用于 150% 3S,110% 57S，100% 240S
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siemens西门子工业自动化与驱动技术有限公司（SIEMENS 一级代理商）
联系人 ：田 杰 (销售工程师）
24小时销售技术服务热线 ：150-2149-6224.
邮箱（Email ）：2317088974@qq.com
企业（ Q Q ）：2317088974
我司只销售西门子原装正品，享受西门子免费一年保修，欢迎来电洽谈！
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西门子6SL3224-0BE25-5UA0，西门子6SL3224-0BE25-5UA0价格报价/现货销售/原装正品/全国直销西门子6SL3224-0BE25-5UA0
产品介绍
1、什么是西门子变频器？
西门子变频器是利用电力半导体器件的通断作用将工频电源变换为另一频率的电能控制装置。
2、为什么西门子变频器的电压与电流成比例的改变？
异步电动机的转矩是电机的磁通与转子内流过电流之间相互作用而产生的，在额定频率下，如果电压一定而只降低频率，那么磁通就过大，磁回路饱和，严重时将烧毁 电机。因此，频率与电压要成比例地改变，即改变频率的同时控制西门子变频器输出电压，使电动机的磁通保持一定，避免弱磁和磁饱和现象的产生。这种控制方式多用于 风机、泵类节能型西门子变频器。
3、西门子变频器制动的有关问题
制动的概念：指电能从电机侧流到西门子变频器侧（或供电电源侧），这时电机的转速高于同步转速，负载的能量分为动能和势能。 动能（由速度和重量确定其大小）随着物体的运动而累积。当动能减为零时，该事物就处在停止状态。机械抱闸装置的方法是用制动装置把物体动能转换为摩擦和能消耗掉。对于西门子变频器，如果输出频率降低，电机转速将跟随频率同样降低。这时会产生制动过程。 由制动产生的功率将返回到西门子变频器侧。这些功率可以用电阻发热消耗。在用于提升类负载，在下降时， 能量（势能）也要返回到西门子变频器（或电源）侧，进行制动。这种操作方法被称作“再生制动”，而该方法可应用于西门子变频器制动。在减速期间，产生的功率如果不通过热消耗的方法消耗掉，而是把能量返回送到西门子变频器电源侧的方法叫做“功率返回再生方法”。在实际中，这种应用需要“能量回馈单元”选件。
4、采用西门子变频器运转时，电机的起动电流、起动转矩怎样？
采用西门子变频器运转，随着电机的加速相应提高频率和电压，起动电流被限制在150%额定电流以下（根据机种不同，为125%~200%）。用工频电源直接起动 时，起动电流为6~7倍，因此，将产生机械电气上的冲击。采用西门子变频器传动可以平滑地起动（起动时间变长）。起动电流为额定电流的1.2~1.5倍，起动转 矩为70%~120%额定转矩；对于带有转矩自动增强功能的西门子变频器，起动转矩为100%以上，可以带全负载起动。
5、装设西门子变频器时安装方向是否有限制。
西门子变频器内部和背面的结构考虑了冷却效果的，上下的关系对通风也是重要的，因此，对于单元型在盘内、挂在墙上的都取纵向位，尽可能垂直安装。
6、不采用软起动，将电机直接投入到某固定频率的西门子变频器时是否可以？
在很低的频率下是可以的，但如果给定频率高则同工频电源直接起动的条件相近。将流过大的起动电流（6~7倍额定电流），由于西门子变频器切断过电流，电机不能起动。
西门子6SL3224-0BE25-5UA0，西门子6SL3224-0BE25-5UA0价格报价/现货销售/原装正品/全国直销西门子6SL3224-0BE25-5UA0
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双轴型
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