UPS 250 and UPS 300 Uninterruptible Power Supplies Caterpillar


System Description

Usage:

UPS 250 APZ
不间断电源(UPS)是一个完全集成的线性交互式系统,该系统将飞轮用作转动质量来存储机械能。 当公用电中断时, UPS 将存储在飞轮中的机械能转化为电能。 该能量被提供给外部负载,直到出现下述一种情况:

  • 备用发电机承接了负载

  • 公用电恢复供电

  • 飞轮运转到能量用尽

一旦公用电源恢复供电,系统会在不发生中断的情况下将负载转换成由公用电源供电。 UPS 可广泛用于市电应用情况。 本系统提供电压调节和断电保护。 UPS 旨在向关键负载、跌落、波动或断电提供适调电源。



图 1g02808036
系统简图

系统包含下列部件。

输入接触器 - 控制电流流入 UPS 的机械接触器。

输出接触器 - 控制电流流出 UPS 的机械接触器。

旁通接触器 - 用于旁通系统的电动接触器。

静态开关 - 静态开关为晶闸管装置。 静态开关在出现超差状况时将 UPS 与公共电网隔离。

飞轮转换器 - 飞轮转换器是一个半导体装置,该装置用于将直流母线电压转换成交流信号。 公共电源不可用时,飞轮转换器将来自飞轮的交流信号整流到直流母线上。

公用转换器 - 公用转换器是一个半导体装置,用于将滤波器节点的交流电压整流成直流电压。 丧失公用电时,公用转换器将来自直流母线的电压转换成系统工作电压和频率。

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