The open-phase protection in long-distance motor operation is very important in practice.
电动机远距离运行断相保护在实际工作中很重要。
The invention relates to electromechanical equipment accessories, in particular to an undervoltage open-phase protection contactor.
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。
Fully automated control system, high and low pressure protection, power off phase and reverse phase protection, effective protection of compressor.
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。
Short-phase relay obtains short-phase signal, short-phase protection circuit was formed according to change of output voltage to realize short-phase protection.
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。
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.
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 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.
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。
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.
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。
In its initial registration phase, Korset analyzes the program requiring protection and produces a model of good behavior that describes every allowable action.
在其最初的登记阶段，Korset分析需要保护的程序并生成良好行为的模型，这个模型描述了每一个被允许的行为。
The phase II studies in the target age groups in Africa have shown anywhere from 40-60% protection against malaria in the follow-up period for the trials.
对非洲目标年龄组的第二期研究结果显示，在随后阶段，疟疾保护率位于40%至60%之间。
Through the research of the above, we have formed a set of intact and practical technology of gaseous phase cathodic protection.
通过以上研究，形成了一套完整而实用的气相阴极保护技术。
The EU legislation has strengthened in the requirements of information, requirements of form, as well as general terms and conditions for the protection of consumer in E-Contractual Phase.
为了应对这一新问题，欧盟立法主要从供应商的信息披露义务、合同的形式要求以及合同一般条款和条件的制定等方面加强了对消费者的保护。
Only in each column over-voltage protector installed on each phase can get good protection effect.
只有在每柱每相上安装过电压保护器才能得到好的保护效果。
It is suitable to calculate the quantities of subgrade protection and drainage project, especially in the draft design and predesign phase of the highway or railway.
该方法尤其适用于公路或铁路的方案研究阶段及初步设计阶段的路基防护及排水工程数量的统计。
This paper introduces theoretical basis and method of measuring transformer differential protection phase by transformer differential circulating current method.
介绍了用差压环流法测量变压器差动保护相位的理论依据及方法。
Because the voltage measuring error increases when phase to phase short circuit occurs, distance relay protection will act improperly.
但是短线路在两相短路时，由于测量电压的误差会放大，可能引起距离保护的超越。
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.
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。
The article describes the design of phase lack and phase dislocation protection circuits and analyzes the operation concept.
提出了缺相和错相电路保护方案的设计，并分析其工作原理。
A vapor phase filming process for PARYLENE a new high polymer material in Airborne Electronic Equipment and its excellent protection performance are introduced.
介绍一种用于机载电子设备上的新型高分子材料Parylene的汽相成膜过程和优良的防护性能。
Its application was widely, which can realize low cost running and protection, such as over current, over load and phase breaking.
还可实现电动机的过流、过载、缺相等多种保护以及轻载节能运行，应用非常广泛。
Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.
针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。
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.
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。
Based on the analysis of the differential protection of the double winding transformer, the paper presents a simplified ratio restraint algorithms for the three phase, three winding transformer.
在分析双绕组变压器的差动保护算法的基础上，提出了适用于三相三绕组变压器的比率制动式算法，并对判据进行了简化。
Single phase capacitor run motor with thermal overload protection.
单相电容运转电机配置热过载保护。
An useful protection module of three-phase power was introduced in this paper.
介绍一种实用的三相电源保护电路模块。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
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。
This article introduced the coal enterprises three-phase asynchronous motor integrated digital protection systems.
本文介绍了适应于煤矿企业三相异步电动机全数字化综合保护系统。
Voltage protection for electronic and electrical equipment used in low voltage single phase power supply system.
主要用于低压单相电源系统电子电器设备的过电压保护。
The transformer backup protection for phase- to- phase faults is not sensitive to the few turn turn- to- turn faults of transformer.
目前变压器相间后备保护对变压器匝间故障的灵敏度不高。
The working principles and characteristics of various split-phase current differential protections are compared, and a reasonable protection scheme is proposed after ATP simulations were conducted.
比较各种分相电流差动保护原理的特性，并通过AT P仿真，提出了一个合理的电流差动保护原理方案。
This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.
提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。
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