一种三相电机的断相保护装置。
The utility model discloses a phase interruption protective device for three-phase electric motor.
电动机远距离运行断相保护在实际工作中很重要。
The open-phase protection in long-distance motor operation is very important in practice.
本发明涉及一种机电设备配件，具体地说是一种欠压断相保护接触器。
The invention relates to electromechanical equipment accessories, in particular to an undervoltage open-phase protection contactor.
用断相保护继电器获取断相信号，据输出电压变化构成断相保护电路实现保护。
Short-phase relay obtains short-phase signal, short-phase protection circuit was formed according to change of output voltage to realize short-phase protection.
本实用新型涉及一种断相保护装置，尤其涉及一种用于电气设备的断相保护器。
The utility model relates to a phase-failure protection, especially relates to an open-phase protector used in the electrical equipment.
分析了煤矿井下小型隔爆电动机过载、断相保护存在的缺陷，提出了改进的保护方案。
The existing defect of overload, open phase protection of minitype flameproof motor used in coal mine was analysed and its improved protection scheme was presented.
此断相保护装置可广泛应用于无缺相保护的电气设备中，使设备控制部件免于遭受断路故障的不必要的损坏。
The phase-failure protection can be widely used in the electrical equipment without open-phase protection to make the control part free of the unnecessary damage of the open circuit failure.
本设计装置主要用于中小型交流电动机的综合保护，它具有断相、过载短路保护功能。
The designed installation is mainly used in synthetic protection of small AC motor. It has the functions of phase failure protection and overload short protection.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
本文用一种新的理论方法，对各种形式的电动机断相运行时的参数进行原理分析和定量计算，并由此给出不同接法的电动机所应采用的保护方案。
This pape. applying a new methods analyses and computes the parameters to phase failure of varies motors and gives protective schemes for motors with different connections.
该保护器以单片机为核心，具有漏电、过载、断相、短路等多种故障自动诊断及串行通信等功能。
It takes microprocessor as a core functions at automatic diagnosis of failures, such as overload, short phase and short circuit, and serial communications.
全自动化控制系统，高低压压力保护，电源断相及逆相保护，有效保障压缩机运行。
Fully automated control system, high and low pressure protection, power off phase and reverse phase protection, effective protection of compressor.
该继电器采用集成电路构成，集线路的速断保护、过电流保护及三相一次重合闸于一体。
The relay is made up of integrated circuits. The line instantaneous overcurrent protection and overcurrent protection are combined with the once 3-phase reclosure application to form a whole body.
具有过流、短路、欠压、断相、漏电闭锁、操作过电压等保护。
It can provide protection from over current, short circuit, undervoltage, phase failure, leakage lockout, and operation overvoltage.
如果不能在运行过程中对三相设备进行缺相保护，则会使三相设备在断相情况下异常工作，轻则设备运行不正常，重则烧毁三相设备。
If no open phase protection is available during the operation course of three-phase equipment, it shall operate abnormally under open phase condition or shall be burnt if the case is serious.
可控制交流50Hz，380V，三相异步电动机的直接起动停止，并具有过载和断相及失压保护。
Able to directly control AC 50Hz, 380V asynchronous motor with the protection of overload, phase-failure and voltage-absent.
可控制交流50Hz，380V，三相异步电动机的直接起动停止，并具有过载和断相及失压保护。
Able to directly control AC 50Hz, 380V asynchronous motor with the protection of overload, phase-failure and voltage-absent.
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