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- induction type under voltage relay 感应式过低电压继电器
- DC under voltage relay 直流低压继电器
- While L1, L2 and L3 phases are over or under voltage, the yellow light is lighted with the unlighted green light and the released relay. L3三相过压或欠压时,黄灯亮,绿灯不亮,继电器释放;
- When voltage become over the setting value, voltage relay shall be operated. 当电压成为超过设定值，电压继电器应经营。
- Automatic feedwater and constant temperature were realized by low voltage relay. 在电路上采用低电压温控继电器安全设计,实现了自动给水和加恒温控制;
- The hardware of the voltage relay are divided into five parts, which are central processing unit, A/D conversion, keyboard display, communication module and execution module. 文中在硬件设计部分将该继电器分为中央处理单元、模数转换模块、键盘显示模块、通信模块和执行模块等几部分进行了详细的论述。
- With the perfect protection functions in over voltage, under voltage, over heat, over current, over load, safe and reliable. 具有完善的过压,欠压,过热,过流,过载自动保护功能,安全可靠。
- Internal circuit protection includes thermal shutdown with hysteresis, under voltage lockout, locked rotor and dead time protection. 内部电路保护包括因滞后引起的过热关机、欠压锁定、转子锁定以及停机时间保护。
- Under voltage protection: It means the voltage of the protected circuit is lower than set value. In this case, the yellow indicator light will be lighted. 欠压保护:指被保护线路电压低于设定值。指示灯形式为:黄灯亮;
- The Device has integrated over-current protection,over-temperature protection and UVLO (Under Voltage Lockout) to provide for a fail safe solution with no external components. 这个器件集成了过流保护、过温保护和U掉压关断的功能，可以不需外转器件实现保护解决方案。
- This paper pays more attention to analyze the accidental conditions of the USB system, and the circuit can detect the overcurrent condition and realize the overcurrent protection, under voltage lockout and over temperature protection. 并针对usb系统工作时可能出现的意外情况 ,通过限流开关内部电路实现过流检测、过流保护、欠压锁定和过热保护功能。
- Whole protection（short circuit protection，over current protection，over voltage protection，under voltage protection，polarity confusion protection，anti-islanding protection，thunder protection）. 具有完善得保护功能(过压、欠压、过流、短路、反接、防孤岛效应、防雷等保护措施)。
- positive-phase-sequence voltage relay 正相序电压继电器
- She and I can't live under the same roof. 她和我不能住在一起。
- The enemy army crumpled up under our attacks. 敌军在我军的攻击下垮了。
- The firm will go under unless business improves. 生意若无起色，公司非垮不可。
- The baby's legs flailed under the quilt. 小孩的两条小腿在被子下面乱动。
- Design of medium-low voltage relay protection based on DSP 基于DSP的中低压保护装置设计
- The fox went to ground under a rocky escarpment. 狐狸钻进了石崖下面的洞里。
- Abstract： This paper introduced a device for aggregative electric parameters testing of DC voltage relays with a 80C552 SCM as the central processor,and stated its hardware and software flow. 摘 要： 介绍了一种以80C552单片机为中央处理机的直流电压继电器综合电参数测试装置，简述了其硬件结构和软件流程。
